Intervention by picroside II on FFAs induced lipid accumulation and lipotoxicity in HepG2 cells
Open accessAbstract
BACKGROUND: Accumulation of free fatty acids (FFAs) in hepatocytes is a hallmark of liver dysfunction and non-alcoholic fatty liver disease (NAFLD). Excessive deposition of FFAs alters lipid metabolism pathways increasing the oxidative stress and mitochondrial dysfunction. Attenuating hepatic lipid accumulation, oxidative stress, and improving mitochondrial function could provide potential targets in preventing progression of non-alcoholic fatty liver (NAFL) to non-alcoholic steatohepatitis (NASH). Earlier studies with Picrorhiza kurroa extract have shown reduction in hepatic damage and fatty acid infiltration in several experimental models and also clinically in viral hepatitis. Thus, the effect of P. kurroa's phytoactive, picroside II, needed mechanistic investigation in appropriate in vitro liver cell model. OBJECTIVE(S): To study the effect of picroside II on FFAs accumulation, oxidative stress and mitochondrial function with silibinin as a positive control in in vitro NAFLD model. MATERIALS AND METHODS: HepG2 cells were incubated with FFAs-1000μM in presence and absence of Picroside II-10 μM for 20 hours. RESULTS: HepG2 cells incubated with FFAs-1000μM lead to increased lipid accumulation. Picroside II-10μM attenuated FFAs-induced lipid accumulation (33%), loss of mitochondrial membrane potential (ΔΨm), ATP depletion, and production of reactive oxygen species (ROS). A concomitant increase in cytochrome C at transcription and protein levels was observed. An increase in expression of MnSOD, catalase, and higher levels of tGSH and GSH:GSSG ratios underlie the ROS salvaging activity of picroside II. CONCLUSION: Picroside II significantly attenuated FFAs-induced-lipotoxicity. The reduction in ROS, increased antioxidant enzymes, and improvement in mitochondrial function underlie the mechanisms of action of picroside II. These findings suggest a need to develop an investigational drug profile of picroside II for NAFLD as a therapeutic strategy. This could be evaluated through the fast-track path of reverse pharmacology.
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Written from the paper’s full text.
TL;DR
In an in vitro NAFLD model using FFAs-loaded HepG2 cells, picroside II (10 μM) attenuated lipid accumulation and lipotoxicity, including oxidative stress and mitochondrial dysfunction. The findings support further investigation of picroside II for NAFLD, though only in HepG2 cells and with mechanistic gaps noted by the authors.
Key findings
- Picroside II reduced FFAs-induced lipid accumulation by 33% (p < 0.01); silibinin, the positive control, reduced it by 32% (p < 0.01).
- FFAs (1000 μM) increased ROS production by 97.9% (p < 0.05); picroside II and silibinin decreased ROS formation by 38.3% and 37.8%, respectively. Picroside II also rescued glutathione depletion, increased tGSH and GSH:GSSG, and increased MnSOD and Catalase mRNA expression by 1.5-fold (p < 0.01).
- FFAs caused a 48.84% decrease in ATP (p < 0.01) and loss of mitochondrial membrane potential (ΔΨm, p < 0.001); picroside II prevented ATP reduction and reversed ΔΨm loss (p < 0.05). Picroside II also increased cytochrome C mRNA and protein expression (p < 0.05).
- Silibinin did not affect GSH:GSSG, MnSOD, or Catalase, whereas picroside II did.
Methods
- HepG2 cells were incubated with FFAs at 1000 μM (oleic:palmitic acid 2:1) for 20 h, with or without picroside II at 10 μM; phytoactives were pre-treated for 2 h before FFAs. Silibinin (10 μM) was used as a positive control.
- Assays included MTT cytotoxicity, Oil Red O lipid quantification, DCFH2-DA ROS measurement, total glutathione and GSH:GSSG estimation, ATP luciferase assay, TMRM flow cytometry for ΔΨm, qRT-PCR, and Western blot.
- Statistical analysis used GraphPad Prism with one- and two-way ANOVA; 4–6 independent experiments were performed, with p < 0.05 considered significant.
Limitations
- The paper states that HepG2 cells are not primary hepatocytes and that results should be followed up in other models such as hepatic spherules, dual cell cultures with Kupffer cells, or primary hepatocytes.
- The authors note that other P. kurroa compounds (e.g., picroside I, apocynin) and other NAFLD pathways (insulin resistance, inflammation, apoptosis, fibrogenesis, etc.) were not explored, and that effects on mitochondrial complexes I and III remain to be studied.
- Evident from the text: this is an in vitro study only, with no in vivo, preclinical toxicity, or clinical data; the mechanistic conclusions are therefore limited to the HepG2 cell model.
Model-written summary. Check it against the paper before relying on it.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
14 of 37 cited sources checked · 6 supported · 1 flagged · accuracy not yet measured
- Premisecitation
Picroside II effectively attenuated fatty acid accumulation in HepG2 cells via decreasing FFAs uptake and lipogenesis.
“Picroside II effectively attenuated the fatty acid accumulation in HepG2 cells via decreasing FFAs uptake and lipogenesis.”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [18] Dhami-Shah, 2018, Picroside II attenuates fatty acid accumulation in HepG2 cells via modulation of fatty acid uptake and synthesis, Clin Mol Hepatol source
- Premisecitation
Picroside I did not show any effect on fatty acid accumulation in HepG2 cells.
“Picroside I on the other hand, did not show any effect on fatty acid accumulation in HepG2 cells.”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [18] Dhami-Shah, 2018, Picroside II attenuates fatty acid accumulation in HepG2 cells via modulation of fatty acid uptake and synthesis, Clin Mol Hepatol source
- Premisecitation
Impairment in mitochondrial function and ATP generation is observed in NAFLD.
“Impairment in mitochondrial function and ATP generation is also observed.”
Quote in the paperNot a substantial claim1 of 2 sources checked- cites [7] Cohen, 2011, Human fatty liver disease: old questions and new insights, Science source
In “What Factors Contribute to NAFLD Progression?” (page not provided), the paper says saturated fats can inhibit mitochondrial function in model organisms. It does not report impaired ATP generation or establish that mitochondrial impairment was observed in people with NAFLD. (LLM, conf=0.86)
Experimental — accuracy not yet measured - cites [8] Day, 1998, Steatohepatitis: a tale of two hits, Gastroenterology source
- Premisecitation
Picroside II attenuates fatty acid accumulation in HepG2 cells by decreasing FFAs uptake and synthesis.
“Earlier, it was shown that picroside II significantly reduced fatty acid accumulation in HepG2 cells by decreasing the FFAs uptake and synthesis [18].”
- Also stated in: § Discussion · plain
“Picroside II attenuates FFAs accumulation, decreases the production of ROS, and increases the levels of antioxidants (glutathione, MnSOD and Catalase).”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [18] Dhami-Shah, 2018, Picroside II attenuates fatty acid accumulation in HepG2 cells via modulation of fatty acid uptake and synthesis, Clin Mol Hepatol source
- Also stated in: § Discussion · plain
- Premisecitation
An increase in ROS formation is accompanied by decrease in the levels of glutathione, MnSOD and Catalase.
“An increase in ROS formation was accompanied by decrease in the levels of glutathione, MnSOD and Catalase [31].”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [31] Masarone, 2018, Role of oxidative stress in pathophysiology of nonalcoholic fatty liver disease, Oxid Med Cell Longev source
Section 2.1 reports that, in a high-fat-diet mouse model, increased oxidative stress was associated with lower glutathione levels and reduced catalase and superoxide-dismutase activity. Section 2 separately links reduced MnSOD activity to increased ROS production. The paper supports the general association, but it does not report decreased MnSOD and catalase levels together with increased ROS; it discusses enzyme activity, and the findings come from different contexts. (LLM, conf=0.86)
Experimental — accuracy not yet measured
- Study design and conductcitation
The cell culture model of hepatic steatosis was established by loading HepG2 cells with FFAs mixture of OA:PA/2:1 as per the previous study.
“As per the previous study, the cell culture model of hepatic steatosis was established by loading HepG2 cells with FFAs mixture of OA: PA/2:1 [18].”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [18] Dhami-Shah, 2018, Picroside II attenuates fatty acid accumulation in HepG2 cells via modulation of fatty acid uptake and synthesis, Clin Mol Hepatol source
- Findingown data
Silibinin caused a 37.8% decrease in ROS formation in FFAs-loaded HepG2 cells.
“Picroside II and silibinin caused a 38.3% and 37.8% decrease in ROS formation respectively.”
Quote in the paperNot a substantial claim - Findingown data
Picroside II pre-treatment significantly attenuated FFAs-induced increase in ROS formation (p < 0.05).
“The increase in ROS formation was attenuated significantly by picroside II pre-treatment p < 0.05.”
- Also stated in: § Results · plain
“Picroside II-10μM attenuated FFAs-induced lipid accumulation (33%), loss of mitochondrial membrane potential (ΔΨm), ATP depletion, and production of reactive oxygen species (ROS).”
Quote in the paperSubstantial claim - Also stated in: § Results · plain
- Findingown data
Picroside II significantly increased mRNA expression of MnSOD and Catalase by 1.5 fold (p < 0.01).
“Picroside II was also found to significantly increase the mRNA expression of MnSOD and Catalase by 1.5 fold, p < 0.01 (Fig. 3D and E).”
Quote in the paperSubstantial claim - Findingown data
Silibinin treatment caused a 32% reduction in lipid accumulation in FFAs-loaded HepG2 cells (p < 0.01).
“Concomitantly, even silibinin showed 32% reduction in lipid accumulation in FFAs-loaded HepG2 cells, p < 0.01.”
Quote in the paperNot a substantial claim - Findingown data
FFAs mixture did not affect HepG2 cell viability in the concentration range of 250-500 μM compared to control cells.
“FFAs mixture did not affect the cell viability in the concentration range of 250–500 μM as compared to control cells.”
Quote in the paperSubstantial claim - Findingown data
FFAs treatment caused a dose-dependent rise in lipid accumulation in HepG2 cells, with percent accumulation of 15%, 25.6%, and 32.3% at 250, 500, and 1000 μM respectively.
“Post-treatment, the colorimetric quantification showed a dose–dependent rise in lipid accumulation. The percent accumulation of FFAs was found to be 15%, 25.6%, and 32.3% at 250, 500 and 1000 μM respectively (Fig. 1C).”
Quote in the paperSubstantial claim - Findingown data
Picroside II-10μM attenuated FFAs-induced loss of mitochondrial membrane potential (ΔΨm).
“Picroside II-10μM attenuated FFAs-induced lipid accumulation (33%), loss of mitochondrial membrane potential (ΔΨm), ATP depletion, and production of reactive oxygen species (ROS).”
Quote in the paperSubstantial claim - Findingown data
The decrease in HepG2 cell viability correlated with increase in ROS production in a dose-dependent manner.
“Also, the decrease in cell viability correlated with increase in ROS production in a dose-dependent manner (Fig. 1B).”
Quote in the paperNot a substantial claim - Findingown data
Picroside II treatment caused a 33% decrease in lipid accumulation in FFAs-loaded HepG2 cells (p < 0.01).
“A 33% decrease in lipid accumulation with picroside II treatment was observed in FFAs loaded cells, p < 0.01 (Fig. 2C and D).”
- Also stated in: § Results · plain
“Picroside II-10μM attenuated FFAs-induced lipid accumulation (33%), loss of mitochondrial membrane potential (ΔΨm), ATP depletion, and production of reactive oxygen species (ROS).”
Quote in the paperSubstantial claim - Also stated in: § Results · plain
- Findingown data
Microscopic examination showed lipid accumulation within the cytoplasm of HepG2 cells loaded with lipids.
“The microscopic examination showed lipid accumulation within the cytoplasm of HepG2 cells loaded with lipids.”
Quote in the paperSubstantial claim - Findingown data
A concomitant increase in cytochrome C at transcription and protein levels was observed with picroside II treatment.
“A concomitant increase in cytochrome C at transcription and protein levels was observed.”
Quote in the paperNot a substantial claim - Findingown data
At FFAs concentration of 1000 μM, a 10% reduction in HepG2 cell viability was observed.
“At FFAs concentration of 1000 μM, a 10% reduction was observed in cell viability.”
Quote in the paperSubstantial claim - Findingown data
Silibinin did not have any effect on GSH:GSSG, MnSOD and Catalase in FFAs-loaded HepG2 cells.
“Silibinin did not have any effect on GSH:GSSG, MnSOD and Catalase.”
Quote in the paperNot a substantial claim - Findingown data
Picroside II did not affect HepG2 cell viability in the concentration range of 3-100 μM.
“Notably, picroside II did not affect the cell viability in the concentration range of 3–100 μM (Fig. 2A).”
Quote in the paperSubstantial claim - Findingown data
With FFAs-loading at 1000 μM, there was no change in mRNA expression of MnSOD, Catalase, and the GSH:GSSG ratio vs the control.
“However, with FFAs-loading at 1000 μΜ, there was no change in the mRNA expression of MnSOD, Catalase, and the GSH:GSSG ratio vs the control.”
Quote in the paperNot a substantial claim - Findingown data
Picroside II-10μM attenuated FFAs-induced ATP depletion.
“Picroside II-10μM attenuated FFAs-induced lipid accumulation (33%), loss of mitochondrial membrane potential (ΔΨm), ATP depletion, and production of reactive oxygen species (ROS).”
Quote in the paperSubstantial claim - Findingown data
Picroside II significantly rescued glutathione depletion in FFAs-loaded HepG2 cells (p < 0.05).
“Picroside II was found to significantly rescue glutathione depletion in the FFAs loaded cells, p < 0.05 (Fig. 3B and C).”
Quote in the paperSubstantial claim - Findingown data
Microscopic examination of picroside II treated cells showed a remarkable decrease in intracellular lipid accumulation.
“The microscopic examination of picroside II treated cells showed a remarkable decrease in intracellular lipid accumulation.”
Quote in the paperSubstantial claim - Findingown data
FFAs treatment at 1000 μM caused significant production of ROS within HepG2 cells, with an increase of 97.9% vs control (p < 0.05).
“The FFAs treatment of 1000 μM caused significant production of ROS within the cells. On loading with FFAs, the increase in ROS production was 97.9%, p < 0.05 (Fig. 3A) vs control cells.”
Quote in the paperSubstantial claim - Findingown data
At FFAs mixture of 2000 μM, there was a significant reduction in HepG2 cell viability of about 35.73% (p < 0.001).
“However, at FFAs mixture of 2000 μM, there was a significant reduction in cell viability of about 35.73%, p < 0.001 (Fig. 1A).”
Quote in the paperSubstantial claim - Findingcitation
Silibinin did not show toxicity in HepG2 cells in the concentration range of 3-100 μM.
“It was interesting to observe that silibinin too, did not show toxicity in the concentration range of 3–100 μM (Fig. 2B), as demonstrated earlier [29].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [29] Varghes, 2005, Silibinin efficacy against human hepatocellular carcinoma, Clin Canc Res source
- Findingown data
Picroside II caused a 38.3% decrease in ROS formation in FFAs-loaded HepG2 cells.
“Picroside II and silibinin caused a 38.3% and 37.8% decrease in ROS formation respectively.”
Quote in the paperSubstantial claim - Findingown data
In HepG2 cells, FFAs treatment decreases Cytochrome C mRNA expression compared to control.
“Additionally, decrease in the expression of Cytochrome C was seen on the FFAs-loading vs the control cells, p < 0.05 (Fig. 4C).”
Quote in the paperSubstantial claim - Findingown data
In FFAs-treated HepG2 cells, silibinin treatment increases only Cytochrome C mRNA expression.
“On the other hand, silibinin increased only the mRNA expression of Cytochrome C, p < 0.05.”
Quote in the paperNot a substantial claim - Findingown data
In HepG2 cells, FFAs treatment does not change Cytochrome C protein expression compared to control.
“No changes were observed in the protein expression of Cytochrome C in FFAs loaded cells compared to the control cells (Fig. 4D and E).”
Quote in the paperNot a substantial claim - Findingown data
In FFAs-treated HepG2 cells, silibinin treatment reverses the loss in ΔΨm.
“The loss in ΔΨm was reversed by picroside II and silibinin, p < 0.05.”
Quote in the paperSubstantial claim - Findingown data
In HepG2 cells, FFAs treatment does not change TFAM mRNA and protein expression compared to control.
“there were no changes observed in the mRNA and protein levels of COX IV and TFAM in FFAs-loaded cells v/s the control cells (Fig. S1A–F)”
Quote in the paperNot a substantial claim - Findingown data
In FFAs-treated HepG2 cells, silibinin treatment does not affect MnSOD and Catalase levels.
“However, silibinin did not show any effect on the MnSOD and Catalase levels.”
Quote in the paperNot a substantial claim - Findingown data
In HepG2 cells, FFAs treatment causes a 48.84% decrease in ATP levels compared to control.
“FFAs caused a 48.84% decrease in ATP levels, p < 0.01 (Fig. 4A).”
Quote in the paperSubstantial claim - Findingown data
In HepG2 cells, FFAs treatment does not change COX IV mRNA and protein expression compared to control.
“there were no changes observed in the mRNA and protein levels of COX IV and TFAM in FFAs-loaded cells v/s the control cells (Fig. S1A–F)”
Quote in the paperNot a substantial claim - Findingown data
In FFAs-treated HepG2 cells, silibinin treatment decreases total ROS compared to FFAs alone.
“silibinin vs FFAs - 1000 μM ∗p < 0.05”
Quote in the paperNot a substantial claim - Findingown data
In FFAs-treated HepG2 cells, silibinin treatment increases COX IV mRNA expression.
“picroside II and silibinin treatment led to an increase in the mRNA expression of COX IV, p < 0.01 and p < 0.05 respectively.”
Quote in the paperNot a substantial claim - Findingown data
In FFAs-treated HepG2 cells, picroside II treatment decreases total ROS compared to FFAs alone.
“picroside II vs FFAs – 1000 μM ∗p < 0.05”
- Also stated in: § Discussion · plain
“picroside II also significantly decreased the ROS formation in FFAs-loaded HepG2 cells.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In FFAs-treated HepG2 cells, picroside II treatment increases Cytochrome C mRNA and protein expression.
“Picroside II supplementation caused an increase in the mRNA and protein expression of Cytochrome C, p < 0.05.”
Quote in the paperSubstantial claim - Findingown data
In FFAs-treated HepG2 cells, picroside II treatment prevents the reduction in ATP levels.
“Further, the reduction in ATP was prevented by picroside II and silibinin treatment, p < 0.01.”
- Also stated in: § Discussion · plain
“Picroside II was found to increase ΔΨm and ATP generation (Fig. 5A and B).”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In FFAs-treated HepG2 cells, silibinin treatment increases tGSH levels compared to FFAs alone.
“silibinin vs FFAs – 1000 μM, ∗p < 0.05”
Quote in the paperSubstantial claim - Findingown data
In HepG2 cells, treatment with FFAs at 1000 μM decreases total glutathione (tGSH) levels compared to control.
“Estimation of tGSH levels on FFAs-1000 μM vs control ∗∗p < 0.01”
- Also stated in: § Discussion · plain
“a significant decrease in the tGSH levels and a trend towards decrease in the GSH/GSSG ratio as well as antioxidant enzymes MnSOD and Catalase, was observed as a result of increased ROS formation.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In FFAs-treated HepG2 cells, picroside II treatment increases the GSH:GSSG ratio compared to FFAs alone.
“Estimation of GSH:GSSG ratio, picroside II vs FFAs – 1000 μM ∗p < 0.05”
- Also stated in: § Discussion · plain
“Picroside II also increased the levels of tGSH and GSH:GSSG.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In FFAs-treated HepG2 cells, picroside II treatment increases Catalase expression compared to FFAs alone.
“RT-PCR analysis of MnSOD (D) and Catalase (E), picroside II vs FFAs – 1000 μM, ∗p < 0.05.”
- Also stated in: § Discussion · plain
“This decrease in ROS formation was parallel to an increased expression of MnSOD and Catalase with picroside II pre-treatment.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In HepG2 cells, treatment with FFAs at 1000 μM increases total ROS compared to control.
“The total ROS was measured using DCFDA stain, FFAs-1000 μM vs control ∗∗p < 0.01”
- Also stated in: § Discussion · plain
“a dose-dependent rise in the lipid accumulation at FFAs −1000 μΜ caused a significant increase in the ROS production.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In FFAs-treated HepG2 cells, picroside II treatment increases MnSOD expression compared to FFAs alone.
“RT-PCR analysis of MnSOD (D) and Catalase (E), picroside II vs FFAs – 1000 μM, ∗p < 0.05.”
- Also stated in: § Discussion · plain
“This decrease in ROS formation was parallel to an increased expression of MnSOD and Catalase with picroside II pre-treatment.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In HepG2 cells, FFAs treatment causes a loss in mitochondrial membrane potential (ΔΨm) compared to control.
“FFAs caused a notable loss in ΔΨm, p < 0.001 (Fig. 4B).”
Quote in the paperSubstantial claim - Findingown data
In FFAs-treated HepG2 cells, silibinin treatment prevents the reduction in ATP levels.
“Further, the reduction in ATP was prevented by picroside II and silibinin treatment, p < 0.01.”
Quote in the paperSubstantial claim - Findingown data
In FFAs-treated HepG2 cells, picroside II treatment increases tGSH levels compared to FFAs alone.
“picroside II vs FFAs – 1000 μM, ∗p < 0.05”
- Also stated in: § Discussion · plain
“Picroside II also increased the levels of tGSH and GSH:GSSG.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Findingown data
In FFAs-treated HepG2 cells, picroside II treatment increases COX IV mRNA expression.
“picroside II and silibinin treatment led to an increase in the mRNA expression of COX IV, p < 0.01 and p < 0.05 respectively.”
Quote in the paperSubstantial claim - Findingown data
In FFAs-treated HepG2 cells, picroside II treatment reverses the loss in ΔΨm.
“The loss in ΔΨm was reversed by picroside II and silibinin, p < 0.05.”
- Also stated in: § Discussion · plain
“Picroside II was found to increase ΔΨm and ATP generation (Fig. 5A and B).”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Interpretationown data
Picroside II significantly attenuated FFAs-induced lipotoxicity.
“Picroside II significantly attenuated FFAs-induced-lipotoxicity.”
Quote in the paperSubstantial claim - Interpretationown data
An increase in expression of MnSOD, catalase, and higher levels of tGSH and GSH:GSSG ratios underlie the ROS salvaging activity of picroside II.
“An increase in expression of MnSOD, catalase, and higher levels of tGSH and GSH:GSSG ratios underlie the ROS salvaging activity of picroside II.”
Quote in the paperSubstantial claim- Rests on an assumption: MnSOD and Catalase prevent oxidative damage by quenching ROS and decreasing the production of hydrogen peroxide.
- Premisecitation
Elevation in inflammation and oxidative stress is seen during the progression of NAFL to NASH.
“Elevation in inflammation and oxidative stress is seen during the progression of NAFL to NASH [6].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [6] Sumida, 2013, Involvement of free radicals and oxidative stress in NAFLD/NASH, Free Radic Res source
- Premisecitation
Excess lipid accumulation within hepatocytes increases ROS production, as demonstrated by several in vitro and in vivo studies including the present one.
“Several in vitro and in vivo studies, including the present one, have demonstrated an increase in the ROS production as a result of excess lipid accumulation within the hepatocytes [9].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [9] Rolo, 2012, Role of oxidative stress in the pathogenesis of nonalcoholic steatohepatitis, Free Radic Biol Med source
- Premisecitation
An increase in ROS generation can cause depletion of antioxidant enzymes (MnSOD, Catalase and glutathione peroxidase).
“An increase in ROS generation can cause depletion of antioxidant enzymes (MnSOD, Catalase and glutathione peroxidase).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [9] Rolo, 2012, Role of oxidative stress in the pathogenesis of nonalcoholic steatohepatitis, Free Radic Biol Med source
- Premisecitation
Excess hepatic FFAs overload alters the process of β-oxidation, increasing the flow of reducing equivalents NADH and FADH2 across the ETC.
“Excess of hepatic FFAs overload alters the process of β-oxidation, increasing the flow of reducing equivalents NADH and FADH2 across ETC [38].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [38] Fromenty, 1995, Inhibition of mitochondrial beta-oxidation as a mechanism of hepatotoxicity, Pharmacol Ther source
- Interpretationown data
In FFAs-treated HepG2 cells, the degree of ROS did not damage the mitochondria to an extent to cause mitochondrial DNA damage.
“This indicates that the degree of ROS did not damage the mitochondria to an extent to cause mitochondrial DNA damage.”
Quote in the paperSubstantial claim - Premisecitation
Depletion of antioxidant enzymes leads to formation of lipid peroxides that have detrimental effects on hepatocytes.
“This leads to formation of lipid peroxides having detrimental effects on hepatocytes [9].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [9] Rolo, 2012, Role of oxidative stress in the pathogenesis of nonalcoholic steatohepatitis, Free Radic Biol Med source
- Premisecitation
In NAFL, the deposition of free fatty acids and triglycerides is caused by an increase in fatty acid uptake, lipogenesis and a concomitant decrease in VLDL-TG secretion.
“In NAFL, the deposition of free fatty acids (FFAs) and triglycerides (TGs) are caused by an increase in fatty acid uptake, lipogenesis and a concomitant decrease in VLDL-TG secretion [5].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [5] Sanyal, 2005, Mechanisms of disease. Pathogenesis of nonalcoholic fatty liver disease, Nat Clin Pract Gastroenterol Hepatol source
- Interpretationown data
The observed decrease in ATP production, ΔΨm, and Cytochrome C expression in FFAs-treated HepG2 cells suggests mitochondrial dysfunction.
“A decrease in ATP production, ΔΨm, and expression of Cytochrome C in FFAs-treated HepG2 cells suggest mitochondrial dysfunction.”
Quote in the paperSubstantial claim - Interpretationown data
Picroside II improves mitochondrial function in FFAs-treated HepG2 cells.
“The present investigation also showed an improvement in mitochondrial function with picroside II.”
- Also stated in: § Discussion · plain
“Picroside II also improves the mitochondrial functions by increasing the ATP production, decreasing the ΔΨM, and Cytochrome C expression (A and B).”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Classified as probably not a substantial claim. 18
- May combine two claims. 9
- The quote only partly states this claim. 1
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductcitationThe Ct value of each gene was normalized with β-actin.
“The Ct value of each gene was normalized with β-actin [27].”
Quote in the paperNot a substantial claim1 of 1 sources checked- cites [27] Zanoni, 2009, mRNA expression analysis by real-time PCR, Protocol Exchange source
The Introduction specifies 18S RNA, not β-actin, as the endogenous control used to adjust target-gene expression for differences in template amount. The indexed copy provides no page number for this passage. (LLM, conf=0.90)
Checked by a reasoning model — may be wrong.
Experimental — accuracy not yet measured
May combine two claims.
PremisecitationOxidative stress contributes to the production of reactive oxygen species, lipid peroxidation products and decreases the levels of antioxidants such as superoxide dismutase, glutathione, and catalase.
“Oxidative stress contributes to the production of reactive oxygen species, lipid peroxidation products and decreases the levels of antioxidants such as superoxide dismutase, glutathione, and catalase.”
Quote in the paperSubstantial claim1 of 2 sources checked- cites [7] Cohen, 2011, Human fatty liver disease: old questions and new insights, Science source
The section “What Factors Contribute to NAFLD Progression?” mentions oxidative-stress pathways as implicated in progression to NASH, but does not describe the effects attributed to oxidative stress here. Searches for reactive oxygen species, lipid peroxidation, superoxide dismutase, glutathione, and catalase found no passage establishing their production or decreased levels. (LLM, conf=0.72)
Experimental — accuracy not yet measured - cites [8] Day, 1998, Steatohepatitis: a tale of two hits, Gastroenterology source
Classified as probably not a substantial claim.
PremisecitationComplexes I and III are the major sites for superoxide formation.
“since they are the major sites for superoxide formation [[36], [37], [38], [39], [40], [41]].”
Quote in the paperSubstantial claim1 of 3 sources checked- cites [36] Escobar, 1996, Sod and catalase inactivation by singlet oxygen and peroxyl radicals, Free Radic Biol Med source
- cites [37] Hüttemann, 2011, The multiple functions of cytochrome c and their regulation in life and death decisions of the mammalian cell: from respiration to apoptosis, Mitochondrion source
- cites [38] Fromenty, 1995, Inhibition of mitochondrial beta-oxidation as a mechanism of hepatotoxicity, Pharmacol Ther source
Classified as probably not a substantial claim. May combine two claims.
PremisecitationDisruption in complexes I and III increases formation of ROS, diminishes tGSH, and depletes ATP generation.
“Disruption in the complexes I and III has shown to increase formation of ROS, diminish tGSH, and deplete ATP generation [42].”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [42] Simões, 2018, Mitochondria in non-alcoholic fatty liver disease, Int J Biochem Cell Biol source
Section 2.2.2 identifies complexes I and III as major sites of superoxide production and reports diminished GSH-related antioxidant activity in NAFLD. Section 2.1.2 reports reduced ATP synthesis alongside ETC alterations. The paper does not establish that disruption of complexes I and III specifically causes all three effects, or that total glutathione (tGSH) is depleted. (LLM, conf=0.87)
Experimental — accuracy not yet measured
Classified as probably not a substantial claim.
PremisecitationAnimal models of mitochondrial dysfunction in NASH have shown alteration in the ETC complexes I, III, and IV.
“Animal models of mitochondrial dysfunction in NASH have shown alteration in the ETC complexes I, III, and IV [35].”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [35] Rector, 2010, Mitochondrial dysfunction precedes insulin resistance and hepatic steatosis and contributes to the natural history of nonalcoholic fatty liver disease in an obese rodent model, J Hepatol source
The Results (page not provided) report mitochondrial dysfunction in OLETF rats, including reduced fatty acid oxidation and cytochrome c content. The Methods’ enzyme activity assays and Results do not identify alterations in ETC complexes I, III, and IV, so the source does not support that specific part of the claim. (LLM, conf=0.85)
Experimental — accuracy not yet measured
Classified as probably not a substantial claim. May combine two claims.
Study design and conductcitationThe blot intensity was quantified using Image J software and the results were reported relative to tubulin band density used as a load control.
“The blot intensity was quantified using Image J software and the results were reported relative to tubulin band density used as a load control [28].”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [28] Mahmood, 2012, Western blot: technique, theory, and trouble shooting, N Am J Med Sci source
The Theory > Quantification section says western blots provide relative comparisons of protein levels and that differences in loading and transfer need to be standardized (page not available). It does not mention ImageJ or reporting results relative to tubulin band density, so it supports only the general rationale for relative quantification. (LLM, conf=0.84)
Experimental — accuracy not yet measured
Classified as probably not a substantial claim.
PremisecitationOxidative stress is a key pathogenetic mechanism in NAFLD contributing to hepatic injury.
“Oxidative stress is a key pathologenetic mechanism in NAFLD contributing to hepatic injury [30].”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [30] Ucar, 2013, The relationship between oxidative stress and nonalcoholic fatty liver disease: its effects on the development of nonalcoholic steatohepatitis, Redox Rep source
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationPre-clinical and clinical studies have shown anti-oxidant properties of silibinin.
“Pre–clinical and clinical studies have shown anti-oxidant properties of silibinin [45].”
Quote in the paperNot a substantial claim1 of 1 sources checked- cites [45] Surai, 2015, Silymarin as a natural antioxidant: an overview of the current evidence and perspectives, Antioxidants source
Section 4.1 reports antioxidant effects of silibinin in cell experiments, and section 4.4 reports protective effects in animal experiments. These support the pre-clinical part of the claim, but the cited passages do not establish that clinical studies showed antioxidant effects of silibinin; the study of monocytes from pre-eclamptic women was conducted in vitro. No page numbers are available in our copy. (LLM, conf=0.82)
Experimental — accuracy not yet measured
May combine two claims. The quote only partly states this claim.
Findingown dataFFAs-loading at 1000 μM decreased total glutathione levels in HepG2 cells, suggesting glutathione depletion (p < 0.01).
“In the present study, there was a decrease in total glutathione levels on FFAs-loading suggesting glutathione depletion, p < 0.01.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Findingnone givenIn FFAs-treated HepG2 cells, silibinin treatment increases ΔΨm and ATP generation compared to FFAs alone.
“Similarly, silibinin pre-treated group showed an increase in ΔΨm and ATP generation compared to FFAs-treated group.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationNAFLD is caused by the accumulation of fat within the hepatocytes (>5.5%) in the absence of significant alcohol intake.
“Non-alcoholic fatty liver disease (NAFLD) is caused by the accumulation of fat within the hepatocytes (>5.5%) in the absence of significant alcohol intake [1].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [1] Angulo, 2002, Nonalcoholic fatty liver disease, N Engl J Med source
May combine two claims.
PremisecitationPicrorhiza kurroa extract has shown reduction in hepatic damage and fatty acid infiltration in several experimental models and clinically in viral hepatitis.
“Picrorhiza kurroa is one of the medicinal plants known for its clinical and experimental hepatoprotective activity [10].”
- Also stated in: § Introduction · plain
“The extracts of P. kurroa significantly reduced hepatic fatty infiltration induced by CCl4, galactosamine, paracetamol, thioacetamide, and high-fat diet in rat models [[11], [12], [13], [14], [15], [16], [17]].”
Quote in the paperSubstantial claim0 of 3 sources checked- cites [10] Tolman, 2007, Treatment of non-alcoholic fatty liver disease, Therapeut Clin Risk Manag
- cites [11] Acharya, 2001
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites [12] Antarkar, 1978, A pilot phase II trial with Arogyawardhini and Punarnavadi kwath in viral hepatitis, Panminerva Med
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Also stated in: § Introduction · plain
May combine two claims.
Interpretationown dataThe reduction in ROS, increased antioxidant enzymes, and improvement in mitochondrial function underlie the mechanisms of action of picroside II.
“The reduction in ROS, increased antioxidant enzymes, and improvement in mitochondrial function underlie the mechanisms of action of picroside II.”
Quote in the paperSubstantial claim- Rests on an assumption: MnSOD and Catalase prevent oxidative damage by quenching ROS and decreasing the production of hydrogen peroxide.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationThe pathogenesis of NAFLD comprises several other dynamic pathways and cross-talks between two or more cell types in the liver.
“The pathogenesis of NAFLD also comprises of several other dynamic pathways and cross-talks between two or more cell types in liver [47].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [47] Garcia-Ruiz, 2010, Mitochondrial complex I subunits are decreased in murine nonalcoholic fatty liver disease: implication of peroxynitrite, J Proteome Res source
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenThe experiments were repeated four times.
“The experiments were repeated four times.”
Quote in the paperNot a substantial claimMay combine two claims.
InterpretationcitationAn increase in Cytochrome C expression implies activation of its function as a single electron carrier in the electron transport chain, catalyzing the reduction of oxygen to water and leading to more ATP.
“An increase in expression of Cytochrome C implies activation of its function as a single electron carrier in the electron transport chain catalyzing the reduction of oxygen molecule to water, thus leading to more ATP [34].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [34] Begriche, 2006, Mitochondrial dysfunction in NASH: causes, consequences and possible means to prevent it, Mitochondrion source
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationClinical studies have reported an increase in lipid peroxidation in patients with NASH.
“Clinical studies have also reported an increase in lipid peroxidation in patients with NASH [33].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [33] Chalasani, 2004, Systemic levels of lipid peroxidation and its metabolic and dietary correlates in patients with nonalcoholic steatohepatitis, Am J Gastroenterol source
Probably not a substantial claim: may not pass S2 (checkable).
InterpretationcitationGiven earlier clinical and in vitro activities of P. kurroa and picroside II, the results in HepG2 cells gain relevance.
“But in view of the earlier clinical and in vitro activities shown by P. kurroa and picroside II, these results in HepG2 cells gain relevance [48].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [48] Chavez-Tapia, 2011, In vitro models for the study of non-alcoholic fatty liver disease, Curr Med Chem source
- Rests on an assumption: Primary hepatocytes are a standard model for studying mechanisms of molecular activity of a compound.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationSilibinin inhibits formation of ROS by increasing tGSH, MnSOD, Catalase, and glutathione peroxidase levels in rat Kupffer cells, hepatocytes, HepG2 cells, and isolated rat hepatic mitochondria.
“Silibinin has shown to inhibit the formation of ROS by increasing tGSH, MnSOD, Catalase, and glutathione peroxidase levels in rat Kupffer cells, hepatocytes, HepG2 cells, and isolated rat hepatic mitochondria [46].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [46] Loguercio, 2011, Silybin and the liver: from basic research to clinical practice, World J Gastroenterol source
Classified as probably not a substantial claim. May combine two claims.
Study design and conductnone givenA minimum of four to six independent experiments were carried out and the standard error of the mean (SEM) was derived.
“A minimum of four to six independent experiments were carried out and the standard error of the mean (SEM) was derived.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationBesides picroside II, P. kurroa contains many other active compounds, including picroside I and apocynin, whose activities on other NAFLD targets have not been explored.
“Besides picroside II, there are many other active compounds present in P. kurroa. These include picroside I and apocynin whose activities have not been explored on other targets involved in pathogenesis of NAFLD such as insulin resistance, altered lipid metabolism, lipotoxicity, oxidative stress and inflammation, activation of immune cells, apoptosis, necrosis, fibrogenesis, and collagen turnover”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [46] Loguercio, 2011, Silybin and the liver: from basic research to clinical practice, World J Gastroenterol source
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationAn increase in ROS damages mitochondrial DNA.
“Also, increase in the ROS is shown to damage mitochondrial DNA [43].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [43] Begriche, 2006, Mitochondrial dysfunction in NASH: causes, consequences and possible means to prevent it, Mitochondrion source
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationIn patients with NASH, an increase in ROS is associated with impaired mitochondrial electron transport chain (ETC) and loss in ΔΨm.
“In patients with NASH, an increase in the ROS is associated with impaired mitochondrial electron transport chain (ETC) and loss in the ΔΨm [34].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [34] Begriche, 2006, Mitochondrial dysfunction in NASH: causes, consequences and possible means to prevent it, Mitochondrion source
The paper relies on this without support.
Findings in FFAs-loaded HepG2 cells are predictive of therapeutic effects in human NAFLD.
“These findings suggest a need to develop an investigational drug profile of picroside II for NAFLD as a therapeutic strategy.”
The paper relies on this without support.
Silibinin is an appropriate positive control for picroside II in this in vitro NAFLD model.
“To study the effect of picroside II on FFAs accumulation, oxidative stress and mitochondrial function with silibinin as a positive control in in vitro NAFLD model.”
The paper relies on this without support.
MnSOD and Catalase prevent oxidative damage by quenching ROS and decreasing the production of hydrogen peroxide.
“The antioxidant enzymes (MnSOD and Catalase) prevent oxidative damage by quenching ROS and decreasing the production of hydrogen peroxide.”
The paper relies on this without support.
Oxidative stress and mitochondrial dysfunction play a significant role in the progression of NAFL to NASH.
“Oxidative stress and mitochondrial dysfunction play a significant role in the progression of NAFL to NASH.”
The paper relies on this without support.
Primary hepatocytes are a standard model for studying mechanisms of molecular activity of a compound.
“Primary hepatocytes have been proposed as a standard model for studying mechanisms of molecular activity of a compound.”
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
Each contradiction between two passages listed here was confirmed by an independent check.
Figure 5 reverses the reported effect on mitochondrial membrane potential
MinorThe Figure 5 caption says picroside II decreases ΔΨm, whereas the discussion says it increases ΔΨm. These are opposite directions for a reported effect central to the paper's conclusion about improved mitochondrial function.
“Picroside II also improves the mitochondrial functions by increasing the ATP production, decreasing the ΔΨM, and Cytochrome C expression (A and B).”
“Picroside II was found to increase ΔΨm and ATP generation (Fig. 5A and B).”
Cites
Bradford, M. M. (1976) · Analytical Biochemistry · doi:10.1016/0003-2697(76)90527-3 · Cited by 255,302 · cited 12× · see citing works
“Once GSSG and tGSH levels were determined, GSH was calculated for determination of GSH to GSSG ratio. tGSH was measured as described above.”
MethodInfluentialMosmann, T. (1983) · Journal of Immunological Methods · doi:10.1016/0022-1759(83)90303-4 · Cited by 56,104 · cited 1× · see citing works
“The blue coloured formazan crystals formed were dissolved in DMSO and absorbance was measured at 570 nm (Biorad Elisa Reader 680) [20].”
MethodGlobal burden of NAFLD and NASH: trends, predictions, risk factors and prevention
Younossi, Z., Anstee, Q. M., Marietti, M., Hardy, T., Henry, L., Eslam, M., George, J., & Bugianesi, E. (2018) · Nature Reviews Gastroenterology & Hepatology · doi:10.1038/nrgastro.2017.109 · Cited by 5,249 · cited 14× · see citing works
“NAFLD is primarily seen in patients ary University, Bangalore.”
BackgroundInfluentialNonalcoholic Fatty Liver Disease
Angulo, P. (2002) · New England Journal of Medicine · doi:10.1056/nejmra011775 · Cited by 5,228 · cited 1× · see citing works
“5%) in the absence of significant alcohol intake [1].”
BackgroundSteatohepatitis: A tale of two “hits”?
Day, C. P., & James, O. F. W. (1998) · Gastroenterology · doi:10.1016/s0016-5085(98)70599-2 · Cited by 4,285 · cited 1× · see citing works
“All these factors aggravate inflammation and cell death [7,8].”
BackgroundNonalcoholic fatty liver disease: a spectrum of clinical and pathological severity.
MATTEONI, C., YOUNOSSI, Z., GRAMLICH, T., BOPARAI, N., LIU, Y., & MCCULLOUGH, A. (1999) · Gastroenterology · doi:10.1016/s0016-5085(99)70506-8 · Cited by 3,345 · cited 1× · see citing works
“It covers a spectrum of disorders beginning with benign steatosis (NAFL) to non-alcoholic steatohepatitis (NASH), which may progress to fibrosis, cirrhosis and cancer in some patients [3].”
BackgroundAssessing mitochondrial dysfunction in cells
Brand, M. D., & Nicholls, D. G. (2011) · Biochemical Journal · doi:10.1042/bj20110162 · Cited by 2,436 · see citing works
Rahman, I., Kode, A., & Biswas, S. K. (2006) · Nature Protocols · doi:10.1038/nprot.2006.378 · Cited by 2,262 · cited 1× · see citing works
“The absorbances of the samples were read at 412 nm in a microplate reader using a kinetic program which monitored the reaction at 1 min interval for 10 min [23].”
MethodHuman Fatty Liver Disease: Old Questions and New Insights
Cohen, J. C., Horton, J. D., & Hobbs, H. H. (2011) · Science · doi:10.1126/science.1204265 · Cited by 2,089 · cited 1× · see citing works
“All these factors aggravate inflammation and cell death [7,8].”
BackgroundNonalcoholic fatty liver disease
Adams, L. A. (2005) · Canadian Medical Association Journal · doi:10.1503/cmaj.045232 · Cited by 1,652 · see citing works
Western blot: technique, theory, and trouble shooting
Yang, P.-C., & Mahmood, T. (2012) · North American Journal of Medical Sciences · doi:10.4103/1947-2714.100998 · Cited by 1,421 · cited 1× · see citing works
“The blot intensity was quantified using Image J software and the results were reported relative to tubulin band density used as a load control [28].”
MethodIdentification of ROS Using Oxidized DCFDA and Flow-Cytometry
Eruslanov, E. B., & Kusmartsev, S. A. (2009) · Methods in molecular biology · doi:10.1007/978-1-60761-411-1_4 · Cited by 1,348 · cited 1× · see citing works
“The fluorescence intensity was measured in the supernatant of the samples (Tecan infinite M200 pro, Switzerland) at excitation 488 nm and emission 529 nm [22].”
MethodRole of oxidative stress in the pathogenesis of nonalcoholic steatohepatitis
Rolo, A. P., Teodoro, J. S., & Palmeira, C. M. (2012) · Free Radical Biology and Medicine · doi:10.1016/j.freeradbiomed.2011.10.003 · Cited by 955 · cited 16× · see citing works
“NAFLD is primarily seen in patients ary University, Bangalore.”
BackgroundInfluentialMitochondrial dysfunction in Nash: causes, consequences and possible means to prevent it
Begriche, K., Igoudjil, A., Pessayre, D., & Fromenty, B. (2006) · Mitochondrion · doi:10.1016/j.mito.2005.10.004 · Cited by 753 · cited 4× · see citing works
“This indicates that the degree of ROS did not damage the mitochondria to an extent to cause mitochondrial DNA damage.”
BackgroundInfluentialPathogenesis of non-alcoholic fatty liver disease
Dowman, J. K., Tomlinson, J., & Newsome, P. N. (2009) · QJM · doi:10.1093/qjmed/hcp158 · Cited by 742 · cited 1× · see citing works
“org/lice having features of metabolic syndrome (MS) such as hypertension, dyslipidemia, insulin resistance (IR) with or without impaired glucose tolerance and visceral obesity [2].”
BackgroundSilymarin as a Natural Antioxidant: An Overview of the Current Evidence and Perspectives
Surai, P. (2015) · Antioxidants · doi:10.3390/antiox4010204 · Cited by 738 · cited 1× · see citing works
“Preeclinical and clinical studies have shown anti-oxidant properties of silibinin [45].”
BackgroundDefective hepatic mitochondrial respiratory chain in patients with nonalcoholic steatohepatitis.
Pérez-Carreras, M., Del Hoyo, P., Martín, M. A., Rubio, J. C., Martín, A., Castellano, G., Colina, F., Arenas, J., & Solis-Herruzo, J. A. (2003) · Hepatology · doi:10.1002/hep.1840380426 · Cited by 734 · see citing works
Inhibition of mitochondrial beta-oxidation as a mechanism of hepatotoxicity
Fromenty, B., & Pessayre, D. (1995) · Pharmacology & Therapeutics · doi:10.1016/0163-7258(95)00012-6 · Cited by 665 · cited 5× · see citing works
“Excess of hepatic FFAs overload alters the process of b-oxidation, increasing the flow of reducing equivalents NADH and FADH2 across ETC [38].”
BackgroundInfluentialRole of Oxidative Stress in Pathophysiology of Nonalcoholic Fatty Liver Disease
Masarone, M., Rosato, V., Dallio, M., Gravina, A. G., Aglitti, A., Loguercio, C., Federico, A., & Persico, M. (2018) · Oxidative Medicine and Cellular Longevity · doi:10.1155/2018/9547613 · Cited by 648 · cited 12× · see citing works
“Picroside II was also found to significantly increase the mRNA expression of MnSOD and Catalase by 1.5 fold, p < 0.01 (Fig.”
BackgroundInfluentialHüttemann, M., Pecina, P., Rainbolt, M., Sanderson, T. H., Kagan, V. E., Samavati, L., Doan, J. W., & Lee, I. (2011) · Mitochondrion · doi:10.1016/j.mito.2011.01.010 · Cited by 522 · see citing works
Rector, R. S., Thyfault, J. P., Uptergrove, G. M., Morris, E. M., Naples, S. P., Borengasser, S. J., Mikus, C. R., Laye, M. J., Laughlin, M. H., Booth, F. W., et al. (2010) · Journal of Hepatology · doi:10.1016/j.jhep.2009.11.030 · Cited by 488 · cited 1× · see citing works
“Animal models of mitochondrial dysfunction in NASH have shown alteration in the ETC complexes I, III, and IV [35].”
BackgroundPessayre, D., & Fromenty, B. (2005) · Journal of Hepatology · doi:10.1016/j.jhep.2005.03.004 · Cited by 441 · cited 12× · see citing works
“Picroside II was found to increase DJm and ATP generation (Fig.”
BackgroundInfluentialSilybin and the liver: From basic research to clinical practice
Loguercio, C. (2011) · World Journal of Gastroenterology · doi:10.3748/wjg.v17.i18.2288 · Cited by 375 · cited 2× · see citing works
“Silibinin has shown to inhibit the formation of ROS by increasing tGSH, MnSOD, Catalase, and glutathione peroxidase levels in rat Kupffer cells, hepatocytes, HepG2 cells, and isolated rat hepatic mitochondria [46].”
BackgroundSOD and catalase inactivation by singlet oxygen and peroxyl radicals
Escobar, J. A., Rubio, M. A., & Lissi, E. A. (1996) · Free Radical Biology and Medicine · doi:10.1016/0891-5849(95)02037-3 · Cited by 349 · see citing works
Treatment of non-alcoholic fatty liver disease
Adams, L. A., & Angulo, P. (2006) · Postgraduate Medical Journal · doi:10.1136/pgmj.2005.042200 · Cited by 349 · see citing works
Chalasani, N., Deeg, M. A., & Crabb, D. W. (2004) · The American Journal of Gastroenterology · doi:10.1111/j.1572-0241.2004.30159.x · Cited by 343 · cited 11× · see citing works
“Delaying the progression of NAFL to NASH at an earlier stage with safe intervention via natural drug therapies would therefore be worth exploring. isciplinary Health Sciences and Technology and World Ayurveda Foundation.”
BackgroundInfluentialInvolvement of free radicals and oxidative stress in NAFLD/NASH
Sumida, Y., Niki, E., Naito, Y., & Yoshikawa, T. (2013) · Free Radical Research · doi:10.3109/10715762.2013.837577 · Cited by 280 · cited 10× · see citing works
“Delaying the progression of NAFL to NASH at an earlier stage with safe intervention via natural drug therapies would therefore be worth exploring. isciplinary Health Sciences and Technology and World Ayurveda Foundation.”
BackgroundInfluentialCousin, S. P., Hügl, S., Wrede, C. E., Kajio, H., Myers, M. G., & Rhodes, C. J. (2001) · Endocrinology · doi:10.1210/endo.142.1.7863 · Cited by 276 · see citing works
Mitochondria in non-alcoholic fatty liver disease
Simões, I. C. M., Fontes, A., Pinton, P., Zischka, H., & Wieckowski, M. R. (2018) · The International Journal of Biochemistry & Cell Biology · doi:10.1016/j.biocel.2017.12.019 · Cited by 234 · cited 1× · see citing works
“Disruption in the complexes I and III has shown to increase formation of ROS, diminish tGSH, and deplete ATP generation [42].”
BackgroundMechanisms of Disease: pathogenesis of nonalcoholic fatty liver disease
Sanyal, A. J. (2005) · Nature Clinical Practice Gastroenterology & Hepatology · doi:10.1038/ncpgasthep0084 · Cited by 216 · cited 1× · see citing works
“In NAFL, the deposition of free fatty acids (FFAs) and triglycerides (TGs) are caused by an increase in fatty acid uptake, lipogenesis and a concomitant decrease in VLDL-TG secretion [5].”
BackgroundQuantitative assessment of adipocyte differentiation in cell culture
Kraus, N. A., Ehebauer, F., Zapp, B., Rudolphi, B., Kraus, B. J., & Kraus, D. (2016) · Adipocyte · doi:10.1080/21623945.2016.1240137 · Cited by 216 · cited 1× · see citing works
“The lipid accumulation was quantified by measuring the absorbance of the extracted solution at 490 nm (PerkinElmer Multimode Plate Reader, Enspire) [21].”
MethodSilibinin Efficacy against Human Hepatocellular Carcinoma
Varghese, L., Agarwal, C., Tyagi, A., Singh, R. P., & Agarwal, R. (2005) · Clinical Cancer Research · doi:10.1158/1078-0432.ccr-05-1646 · Cited by 146 · see citing works
Ucar, F., Sezer, S., Erdogan, S., Akyol, S., Armutcu, F., & Akyol, O. (2013) · Redox Report · doi:10.1179/1351000213y.0000000050 · Cited by 143 · cited 1× · see citing works
“Oxidative stress is a key pathologenetic mechanism in NAFLD contributing to hepatic injury [30].”
BackgroundTreatment of non-alcoholic fatty liver disease.
(2007) · PubMed Central · Cited by 118 · see citing works
García‐Ruíz, I., Solís‐Muñoz, P., Fernández-Moreira, D., Grau, M., Colina, F., Muñoz‐Yagüe, T., & Solis-Herruzo, J. A. (2014) · Disease Models & Mechanisms · doi:10.1242/dmm.016766 · Cited by 99 · see citing works
In Vitro Models for the Study of Non-Alcoholic Fatty Liver Disease
C. Chavez-Tapia, N., Rosso, N., & Tiribelli, C. (2011) · Current Medicinal Chemistry · doi:10.2174/092986711794940842 · Cited by 86 · cited 1× · see citing works
“kurroa and picroside II, these results in HepG2 cells gain relevance [48].”
BackgroundLife cell quantification of mitochondrial membrane potential at the single organelle level
Distelmaier, F., Koopman, W. J. H., Testa, E. R., de Jong, A. S., Swarts, H. G. P., Mayatepek, E., Smeitink, J. A. M., & Willems, P. H. G. M. (2007) · Cytometry Part A · doi:10.1002/cyto.a.20503 · Cited by 85 · cited 1× · see citing works
“The cells were assayed for TMRM fluorescence using flow cytometry (BD LSRFortessa cell analyzer, Belgium) [26].”
MethodNon-alcoholic fatty liver disease (NAFLD) models in drug discovery
Cole, B. K., Feaver, R. E., Wamhoff, B. R., & Dash, A. (2017) · Expert Opinion on Drug Discovery · doi:10.1080/17460441.2018.1410135 · Cited by 79 · cited 1× · see citing works
“dual cell cultures with Kupffer cells or primary hepatocytes, etc [49].”
BackgroundShetty, S., Mengi, S. A., Vaidya, R. A., & Vaidya, A. B. (2010) · Journal of Ayurveda and Integrative Medicine · doi:10.4103/0975-9476.72622 · Cited by 72 · see citing works
Self-citationHepatoprotective activity of picroliv against carbon tetrachloride-induced liver damage in rats.
Dwivedi, Y. K., Rastogi, R. P., Chander, R., Sharma, S. K., Kapoor, N. K., Garg, N. K., & Dhawan, B. N. (1990) · PubMed · Cited by 70 · see citing works
Picroliv Affords Protection Against Thioacetamide-Induced Hepatic Damage in Rats1
Dwivedi, Y., Rastogi, R. P., Sharma, S., et al. (1991) · Planta Medica · doi:10.1055/s-2006-960009 · Cited by 59 · see citing works
Potential Therapeutic Benefits of Herbs and Supplements in Patients with NAFLD
Perumpail, B. J., Li, A. A., Iqbal, U., Sallam, S., Shah, N. D., Kwong, W., Cholankeril, G. T., Kim, D., & Ahmed, A. (2018) · Diseases · doi:10.3390/diseases6030080 · Cited by 48 · cited 1× · see citing works
“Preventing the development of NASH with suitable safe phytomolecules would be hereby beneficial [44].”
BackgroundGarcía-Ruiz, I., Fernández-Moreira, D., Solís-Muñoz, P., Rodríguez-Juan, C., Díaz-Sanjuán, T., Muñoz-Yagüe, T., & Solís-Herruzo, J. A. (2010) · Journal of Proteome Research · doi:10.1021/pr9011427 · Cited by 46 · cited 1× · see citing works
“The pathogenesis of NAFLD also comprises of several other dynamic pathways and cross-talks between two or more cell types in liver [47].”
BackgroundDwivedi, Y., Rastogi, R. P., Garg, N. K., et al. (1991) · Phytotherapy Research · doi:10.1002/ptr.2650050306 · Cited by 42 · see citing works
Dhami-Shah, H., Vaidya, R., Udipi, S., Raghavan, S., Abhijit, S., Mohan, V., Balasubramanyam, M., & Vaidya, A. (2018) · Clinical and Molecular Hepatology · doi:10.3350/cmh.2017.0039 · Cited by 36 · see citing works
Self-citationVisen, P., Shukla, B., Patnaik, G. K., et al. (1993) · Planta Medica · doi:10.1055/s-2006-959600 · Cited by 26 · see citing works
A pilot phase II trial with arogya-wardhani and Punarnavadi-Kwath in viral hepatitis.
Antarkar, D. S., Tathed, P. S., & Vaidya, A. (1980) · PubMed · Cited by 9 · see citing works
Self-citationKinetics of bactericidal activity of antibiotics measured by luciferin‐luciferase assay
de la Roy, Y. D. R., Messedi, N., Grollier, G., et al. (1991) · Journal of Bioluminescence and Chemiluminescence · doi:10.1002/bio.1170060310 · Cited by 9 · cited 1× · see citing works
“The treated cells were analyzed for ATP levels using ATPlite Detection Assay System (Molecular Probes, USA) as per the manufacturer's instructions [25].”
MethodmRNA expression analysis by real-time PCR
Zanoni, I., & Ostuni, R. (2009) · Protocol Exchange · doi:10.1038/nprot.2009.138 · Cited by 2 · cited 1× · see citing works
“The Ct value of each gene was normalized with b-actin [27].”
Method
Flagged first, then by citations
5 of the 54 references couldn’t be matched to a known paper.
Research works printed but not linked: 1
- Begriche, 2006, Mitochondrial dysfunction in NASH: causes, consequences and possible means to prevent it, Mitochondrion, 6, 1, 10.1016/j.mito.2005.10.004 · DOI · Paper page
Cited by
Sorted by citations
Wang, X., Xiang, X., Wei, S., et al. (2022) · Food Chemistry · doi:10.1016/j.foodchem.2022.133794 · Cited by 43 · see citing works
Raut, A. A., Dhami-Shah, H., Phadke, A., Shindikar, A., Udipi, S. A., Joshi, J. V., Vaidya, R. A., & Vaidya, A. D. B. (2022) · Journal of Ayurveda and Integrative Medicine · doi:10.1016/j.jaim.2022.100558 · Cited by 28 · see citing works
Self-citationProtective Effect and Mechanism of Plant-Based Monoterpenoids in Non-alcoholic Fatty Liver Diseases
Zhang, W., Lin, H., Cheng, W., Huang, Z., & Zhang, W. (2022) · Journal of Agricultural and Food Chemistry · doi:10.1021/acs.jafc.2c00744 · Cited by 26 · see citing works
Partap, M., Chhimwal, J., Kumar, P., Kumar, D., Padwad, Y. S., & Warghat, A. R. (2022) · Process Biochemistry · doi:10.1016/j.procbio.2022.06.002 · Cited by 16 · see citing works
Katoch, S., Chhimwal, J., Singh, D., Kumar, D., & Patial, V. (2025) · Phytomedicine · doi:10.1016/j.phymed.2025.156368 · Cited by 9 · see citing works
Cesarini, L., Grignaffini, F., Alisi, A., & Pastore, A. (2024) · Antioxidants · doi:10.3390/antiox13121461 · Cited by 6 · see citing works
Jin, J., & Yang, C. C.-K. (2026) · Metabolites · doi:10.3390/metabo16070489 · Cited by 5 · see citing works
Sharma, S., Sharma, A., & Chauhan, R. S. (2024) · Journal of Biomolecular Structure and Dynamics · doi:10.1080/07391102.2024.2438358 · Cited by 4 · see citing works
“Picrorhiza kur-roa extract and its isolated compounds have been found to be effective in various types of diseases including NAFLD (Dhami-Shah et al., 2018, 2021; Shetty et al., 2010).”
Liu, D., Zhang, Y., Zhang, G., et al. (2024) · International Journal of Pharmacology · doi:10.3923/ijp.2024.1063.1075 · Cited by 1 · see citing works
Picrorhiza kurroa Royle ex Benth.: Kutki
Kaur, K., Kaur, G., & Singh, V. K. (2023) · Springer eBooks · doi:10.1007/978-981-19-9501-9_15
Kouser, S., Kumar, S., & Vishnuprasad, C. N. (2023) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2023.07.05.547893
Effects of 1,4-dihydropyridine derivatives on cell injury and mTOR of HepG2 and 3D-QSAR study
Liu, H., Liu, H., Zhu, S., et al. (2023) · Computational Biology and Chemistry · doi:10.1016/j.compbiolchem.2023.108010
Multicomponent phytopharmaceutical Dipana for the treatment of hepatobiliary disorders. A review
Александровна, П. В., & Okovityi, S. V. (2024) · Consilium Medicum · doi:10.26442/20751753.2024.5.202840
Iridoids in liver diseases: Mechanistic insights and molecular mechanism
Dogra, S. S., & Patial, V. (2026) · Journal of Chinese Integrative Medicine · doi:10.1016/j.joim.2026.01.008
Katoch, S., Jatin, Acharya, V., & Patial, V. (2026) · Cell Biology International · doi:10.1002/cbin.70170
“Picrosides have been reported to reduce lipid accumulation and oxidative stress, which is crucial in developing steatohepatitis (Dhami‐Shah et al. 2021; Meng et al. 2012).”
- Authors
- Dhami-Shah, H., Vaidya, R., Talwadekar, M., Shaw, E., Udipi, S., Kolthur-Seetharam, U., & Vaidya, A. D. B.
- Affiliations
- Tata Institute of Fundamental Research (IN)
- Corresponding author
- Dhami-Shah, Hiteshi
- Venue
- Journal of Ayurveda and Integrative Medicine
- Publisher
- Elsevier BV
- Published
- 2021-07
- Volume
- 12
- Issue
- 3
- Pages
- 465-473
- ISSN
- 0975-9476 (ISSN-L)
- PMC
- PMC8377190
- OpenAlex
- W3190193027
- Semantic Scholar
- 0105e15e347145a8c89db056065e3cc2b0239c20
- Cited by
- 15
- References
- 54
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 4 · 2023: 3 · 2022: 4
- FWCI
- 1.69
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Journal of Ayurveda and Integrative Medicine (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- PubMed Central (submittedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Department of Science and Technology, Ministry of Science and Technology, India (SR/WOS-A/LS-1135/2014)
- Topics
- Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Drug-Induced Hepatotoxicity and Protection
- Health Sciences › Medicine › Complementary and alternative medicine › Medicinal plant effects and applications
- Keywords
- picroside II, Picrorhiza kurroa, free fatty acids, hepatic lipid accumulation, lipotoxicity, non-alcoholic fatty liver disease, oxidative stress, mitochondrial dysfunction, reactive oxygen species, cytochrome c, antioxidant enzymes, glutathione, mitochondrial membrane potential, HepG2 cells
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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