Effects of Semaglutide Versus Dulaglutide on Epicardial Fat Thickness in Subjects with Type 2 Diabetes and Obesity
Open accessAbstract
Background and Aims: Epicardial adipose tissue (EAT), the visceral fat depot of the heart, is a modifiable cardio-metbolic risk factor and therapeutic target. Semaglutide and dulaglutide, glucagon-like peptide-1 (GLP-1) receptor agonists, are indicated for the treatment of type 2 diabetes mellitus (T2DM). GLP-1 receptor agonists have recently shown to reduce cardiovascular risk. Epicardial adipose tissue expresses GLP-1 receptors (GLP-1Rs). GLP-1 receptor agonist liraglutide is known to significantly decrease EAT thickness. However, the effects of GLP-1 receptor agonists semaglutide and dulaglutide on EAT thickness are unknown. Materials and Methods: We performed a 12-week, controlled, parallel study in 80 subjects with T2DM and obesity. Patients received either semaglutide, up to 1 mg subcutaneous (sc) weekly, or dulaglutide, up to 1.5 mg sc weekly, as the standard of care in addition to their usual medication regimen. Twenty subjects with T2DM and obesity were started on metformin and a diet and served as the control group. Ultrasound-measured EAT thickness was measured at baseline and at the 12-week follow-up. Results: Epicardial adipose tissue thickness significantly decreased in both semaglutide and dulaglutide groups (P < 0.001) after 12 weeks, accounting for a 20% reduction. There was no EAT reduction in the metformin group. Body mass index (BMI) and HbA1c improved in all groups without reaching statistical significance. Epicardial adipose tissue thickness reduction was significantly greater (P < 0.01) with the higher doses of semaglutide (1 mg) and dulaglutide (1.5 mg), respectively. Conclusion: Weekly administration of either GLP-1 receptor agonists semaglutide or dulaglutide causes a rapid, substantial, and dose-dependent reduction in EAT thickness.
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TL;DR
In a 12-week controlled parallel study of 80 subjects with type 2 diabetes and obesity, weekly semaglutide or dulaglutide significantly reduced ultrasound-measured epicardial adipose tissue (EAT) thickness by approximately 20%, while metformin did not. The EAT reduction was dose-dependent, with greater reduction at maximum semaglutide (1 mg) and dulaglutide (1.5 mg) doses.
Key findings
- EAT thickness decreased significantly in both semaglutide and dulaglutide groups after 12 weeks (reported as P < 0.001 in the abstract and P < 0.01 in the results/table), accounting for an approximate 20% reduction in both groups; there was no significant EAT reduction in the metformin group.
- EAT reduction was significantly greater with higher doses of semaglutide (1 mg) and dulaglutide (1.5 mg), respectively (P < 0.01 in both groups); 15 patients in each GLP-1 group reached the maximum dose.
- BMI and HbA1c improved in all groups without reaching statistical significance; BMI reduction was approximately 5%, 6%, and 4% in the semaglutide, dulaglutide, and metformin groups, respectively, and approximately 12% in patients receiving maximum medication dosages.
- HbA1c reduction was statistically higher in those receiving semaglutide 1 mg compared with dulaglutide 1.5 mg once weekly (P < 0.01). No serious adverse events occurred; 6 patients were lost to follow-up, including 4 who withdrew due to nausea.
Methods
- Design: 12-week, controlled, parallel group study in 80 subjects with T2DM and obesity (BMI ≥ 27 kg/m²): 30 received semaglutide up to 1 mg subcutaneous weekly, 30 received dulaglutide up to 1.5 mg subcutaneous weekly, and 20 newly diagnosed subjects started metformin plus diet and served as controls.
- Data/sample: Subjects were screened from a University of Miami outpatient diabetes clinic; data were obtained from electronic medical records. EAT thickness was measured by transthoracic ultrasound at baseline and 12 weeks, with intraclass correlation coefficient 0.90.
- Analysis: Primary outcome was reduction in EAT thickness on semaglutide or dulaglutide compared with control; secondary outcome was change in HbA1c. Two-sample t-tests, nonparametric tests, and simple linear regression were used; P < 0.05 was considered significant.
Limitations
- Stated: This was not a randomized clinical trial and no cardiovascular outcomes were evaluated; a randomized trial would be desirable. Echocardiographic EAT is a linear measurement at a single location and may not reflect variability of fat thickness or total EAT volume as measured by computed tomography; no other visceral fat depots were measured. Some results may have reached statistical significance with a larger sample size, and confounding variables cannot be ruled out.
- Evident from the text: Patients were allocated to semaglutide or dulaglutide based on preference or medical insurance coverage, and baseline differences existed between groups, including older age, longer diabetes duration, higher HbA1c, and higher EAT in the GLP-1 groups versus controls.
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Claims the paper makes
0 of 36 cited sources checked · 0 supported · 0 flagged
- Findingown data
BMI reduction was higher in patients receiving the maximum medication dosages, approximately 12% in both groups.
“Body mass index reduction was higher in patients receiving the maximum medication dosages (approximately 12% in both groups).”
Quote in the paperNot a substantial claim - Findingnone given
Most patients were able to tolerate the maximum dosage of the drugs in each group.
“Most of the patients were able to tolerate the maximum dosage of the drugs in each group.”
Quote in the paperNot a substantial claim - Findingown data
EAT thickness reduction was significantly greater with the higher doses of semaglutide (1 mg) and dulaglutide (1.5 mg).
“Epicardial adipose tissue thickness reduction was significantly greater (P < 0.01) with the higher doses of semaglutide (1 mg) and dulaglutide (1.5 mg), respectively.”
- Also stated in: § 4. Intervention · plain
“Epicardial adipose tissue showed a further statistically significant reduction in these patients, P < 0.01 in both groups (Fig. 1).”
Quote in the paperSubstantial claim - Also stated in: § 4. Intervention · plain
- Findingown data
HbA1c reduction was statistically higher in patients receiving semaglutide 1 mg compared to patients using dulaglutide 1.5 mg once weekly.
“HbA1c reduction was statistically higher in those receiving semaglutide, 1 mg, as compared to patients using dulaglutide, 1.5 mg, once a week (< 0.01).”
Quote in the paperNot a substantial claim - Findingown data
Baseline EAT thickness was significantly higher in patients on semaglutide and dulaglutide compared to controls.
“When compared to controls, EAT thickness was significantly higher at baseline in patients on semaglutide and dulaglutide (P < 0.01) despite no statistically significant difference in the BMI between the 3 groups.”
Quote in the paperNot a substantial claim
- Findingown data
In the semaglutide group, the change in BMI from baseline to 12 weeks was the strongest predictor of change in HbA1c.
“In a univariate analysis in the semaglutide group, the change in BMI from baseline to 12 weeks was the strongest predictor of change in HbA1c.”
Quote in the paperNot a substantial claim - Findingown data
LDL was reduced in the semaglutide and dulaglutide groups without reaching statistical significance.
“HbA1c and LDL were also reduced in the semaglutide and dulaglutide groups without reaching enough statistical significance.”
Quote in the paperNot a substantial claim - Findingown data
There was no EAT reduction in the metformin group.
“There was no EAT reduction in the metformin group.”
- Also stated in: § 4. Intervention · plain
“whereas there was no significant reduction in EAT thickness in the metformin group”
Quote in the paperSubstantial claim - Also stated in: § 4. Intervention · plain
- Findingown data
The extent of weight loss was smaller than the reduction in EAT thickness, approximately 5% versus 20%.
“However, the extent of weight loss was smaller as compared to the reduction in EAT thickness (approximately 5% versus 20%), suggesting a possible independent effect of the medications.”
Quote in the paperSubstantial claim - Findingown data
There was no meaningful difference in EAT reduction between the higher dose of semaglutide and the higher dose of dulaglutide.
“although we did not observe any meaningful difference between the higher dose of semaglutide compared to the higher dose of dulaglutide.”
Quote in the paperSubstantial claim - Findingown data
Weight loss was substantially higher with semaglutide 1 mg and dulaglutide 1.5 mg.
“Weight loss was also substantially higher with semaglutide, 1 mg, and dulaglutide, 1.5 mg, respectively.”
Quote in the paperNot a substantial claim - Study design and conductnone given
The study groups had similar demographic characteristics.
“Despite the study groups having similar demographic characteristics, we cannot rule out the presence of confounding variables.”
Quote in the paperNot a substantial claim - Study design and conductown data
Four patients allocated to either dulaglutide or semaglutide withdrew after 2 to 4 weeks because of nausea.
“Four patients allocated to either dulaglutide or semaglutide withdrew after 2 to 4 weeks, as they were experiencing nausea.”
Quote in the paperNot a substantial claim - Study design and conductreasoning
The study cannot rule out the presence of confounding variables.
“Despite the study groups having similar demographic characteristics, we cannot rule out the presence of confounding variables.”
Quote in the paperSubstantial claim - Study design and conductreasoning
The study sample size was sufficient to detect a statistically significant difference in EAT between the treatments, using a significance level of P < 0.05 and 90% power.
“Hence, using a significance level of P < 0.05 and 90% power, the current study sample size was sufficient to detect a statistically significant difference in EAT between the treatments.”
Quote in the paperSubstantial claim - Study design and conductnone given
This was not a randomized clinical trial.
“This was not a randomized clinical trial and no cardiovascular outcomes were evaluated.”
Quote in the paperSubstantial claim - Study design and conductown data
There was no statistically significant difference in BMI between the three study groups at baseline.
“despite no statistically significant difference in the BMI between the 3 groups”
Quote in the paperNot a substantial claim - Study design and conductnone given
No cardiovascular outcomes were evaluated in this study.
“This was not a randomized clinical trial and no cardiovascular outcomes were evaluated.”
Quote in the paperSubstantial claim - Premisecitation
Liraglutide significantly decreased EAT thickness by almost 30% after 12 weeks in subjects with T2DM.
“We recently showed that add-on therapy with liraglutide, a once-daily GLP-1 receptor agonist, significantly decreased EAT thickness by almost 30% after 12 weeks in subjects with T2DM [16].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [16] Iacobellis, 2017, Liraglutide causes large and rapid epicardial fat reduction, Obesity (Silver Spring). source
Not checked in the free run.
- Premisecitation
EAT serves as a modifiable therapeutic target for medications modulating adipose tissue, such as GLP-1 receptor agonists.
“Given its rapid metabolism, organ fat specificity, and simple measurability, EAT serves as a modifiable therapeutic target for medications modulating the adipose tissue, such as the glucagon-like peptide-1 (GLP-1) receptor agonists [11].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [11] Iacobellis, 2016, Epicardial fat: a new cardiovascular therapeutic target, Curr Opin Pharmacol. source
Not checked in the free run.
- Interpretationcitation
GLP-1 receptor agonist effects may be specific to visceral fat, including EAT.
“GLP-1 receptor agonists effects may therefore be specific to visceral fat, including EAT.”
Quote in the paperSubstantial claim - Premisecitation
EAT is higher in subjects with T2DM and metabolic syndrome, independently of traditional body fat indicators.
“Epicardial adipose tissue is higher in subjects with T2DM and metabolic syndrome, independently of traditional body fat indicators [5–7].”
Quote in the paperSubstantial claim0 of 3 sources checked- cites [5] Iacobellis, 2009, Echocardiographic epicardial fat: a review of research and clinical applications, J Am Soc Echocardiogr. source
Not checked in the free run.
- cites [6] Iacobellis, 2003, Epicardial fat from echocardiography: a new method for visceral adipose tissue prediction, Obes Res. source
Not checked in the free run.
- cites [7] Iacobellis, 2003, Echocardiographic epicardial adipose tissue is related to anthropometric and clinical parameters of metabolic syndrome: a new indicator of cardiovascular risk, J Clin Endocrinol Metab. source
Not checked in the free run.
- Interpretationreasoning
The findings may imply a class effect of GLP-1 receptor agonists on EAT.
“This may imply a class effect of GLP-1 receptor agonists on EAT.”
Quote in the paperSubstantial claim - Premisecitation
Human EAT expresses the GLP-1 receptor gene and protein.
“Remarkably, human EAT expressed the GLP-1 receptor (GLP-1R) gene and protein, suggesting that EAT reduction can be mediated by a direct effect and activation of GLP-1R [18].”
- Also stated in: § Discussion · boosted
“we have recently demonstrated that human EAT expressed GLP-1R gene and protein [18].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [18] Iacobellis, 2017, Human epicardial fat expresses glucagon-like peptide 1 and 2 receptors genes, Horm Metab Res. source
Not checked in the free run.
- Also stated in: § Discussion · boosted
- Premisecitation
GLP-1 receptor agonists as a class reduced major adverse cardiovascular events.
“Clinical trials found that GLP-1 receptor agonists as a class reduced major adverse cardiovascular events [12–15].”
Quote in the paperNot a substantial claim0 of 4 sources checked- cites [12] Kristensen, 2019, Cardiovascular, mortality, and kidney outcomes with GLP-1 receptor agonists in patients with type 2 diabetes: a systematic review and meta-analysis of cardiovascular outcome trials, Lancet Diabetes Endocrinol.
Not checked in the free run.
- cites [13] Marso, 2016, Liraglutide and cardiovascular outcomes in type 2 diabetes, N Engl J Med. source
Not checked in the free run.
- cites [14] Gerstein, 2019, Dulaglutide and cardiovascular outcomes in type 2 diabetes (REWIND): a double-blind, randomised placebo-controlled trial, Lancet. source
Not checked in the free run.
- cites [15] Marso, 2016, Semaglutide and cardiovascular outcomes in patients with type 2 diabetes, N Engl J Med. source
Not checked in the free run.
- Interpretationreasoning
The medications may have an independent effect on EAT reduction beyond weight loss.
“suggesting a possible independent effect of the medications”
Quote in the paperSubstantial claim - Premisecitation
Exenatide induced reduction of EAT and hepatic triglyceride content.
“One study showed that exenatide, a first generation weekly GLP-1 receptor, induced the reduction of EAT and hepatic triglyceride content [27].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [27] Dutour, 2016, Exenatide decreases liver fat content and epicardial adipose tissue in patients with obesity and type 2 diabetes: a prospective randomized clinical trial using magnetic resonance imaging and spectroscopy, Diabetes Obes Metab. source
Not checked in the free run.
- Classified as probably not a substantial claim. 21
- May combine two claims. 18
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Findingown dataBody mass index decreased in all groups without reaching statistical significance.
“Body mass index decreased in all groups without reaching statistical significance, reflecting an approximately 5%, 6%, and 4% reduction in the semaglutide, dulaglutide, and metformin groups, respectively.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataIn the dulaglutide group, neither change in EAT thickness nor change in BMI correlated with change in HbA1c over the study.
“In the dulaglutide group, neither a change in EAT thickness or a change in BMI correlated with change in HbA1c over the course of the study.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataHbA1c was reduced in the semaglutide and dulaglutide groups without reaching statistical significance.
“HbA1c and LDL were also reduced in the semaglutide and dulaglutide groups without reaching enough statistical significance.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataNo serious adverse events occurred and no patients required hospitalization during the study.
“No serious adverse events occurred and no patients required hospitalization during the study.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataEpicardial adipose tissue thickness significantly decreased in both semaglutide and dulaglutide groups after 12 weeks, accounting for approximately a 20% reduction.
“Epicardial adipose tissue thickness significantly decreased in both semaglutide and dulaglutide groups (P < 0.001) after 12 weeks, accounting for a 20% reduction.”
- Also stated in: § 4. Intervention · plain
“Epicardial adipose tissue thickness decreased significantly in both the semaglutide and dulaglutide groups after the 12 weeks (P < 0.01 for both), accounting for an approximate 20% reduction in both groups”
Quote in the paperSubstantial claim- Also stated in: § 4. Intervention · plain
May combine two claims.
FindingcitationPatients lost weight on either semaglutide or dulaglutide, consistent with the SUSTAIN 7 trial.
“Consistent with the SUSTAIN 7 trial [19], patients lost weight on either semaglutide or dulaglutide.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [19] Pratley, 2018, Semaglutide versus dulaglutide once weekly in patients with type 2 diabetes (SUSTAIN 7): a randomised, open-label, phase 3b trial, Lancet Diabetes Endocrinol. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenNo other visceral fat depots were measured in this study.
“No other visceral fat depots were measured in this study.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductnone givenEchocardiographic EAT is a linear measurement at a single location and may not reflect the variability of fat thickness or total EAT volume as measured by computed tomography.
“Echocardiographic EAT is a linear measurement at a single location and therefore may not reflect the variability of fat thickness or total EAT volume as measured by computed tomography.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataTwo patients started on metformin discontinued the medication because of diarrhea or bloating.
“Two patients who were started on metformin discontinued the medication because of diarrhea or bloating.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductnone givenThe study was approved by the local institutional review board and conducted in accordance with the Declaration of Helsinki and Good Clinical Practice guidelines.
“The study was approved by local institutional review board (IRB # 20190944) and conducted in accordance with the Declaration of Helsinki and Good Clinical Practice guidelines.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataThe intraclass correlation coefficient of the EAT measurement was 0.90, indicating good reproducibility and reliability.
“The intraclass correlation coefficient of the EAT measurement was 0.90, indicating good reproducibility and reliability.”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim.
Study design and conductnone givenStatistical analysis was performed only on patients who completed the 12-week study.
“Statistical analysis was performed only on patients who completed the 12-week study.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenThe study was registered at clinicaltrials.gov (NCT04200625).
“The study has been registered in www.clinicaltrials.gov (NCT04200625).”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).
Study design and conductnone givenSome results may have reached statistical significance with a larger sample size.
“Some results may have reached statistical significance with a larger sample size.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataNo significant differences in carbohydrate or calorie intake between the groups were detected at baseline.
“Although the diet varied according to the different ethnicities and habits of the patients, no significant differences in carbohydrates or calorie intake between the groups were detected at baseline.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataPatients in the GLP-1 receptor agonist groups were older, had a longer duration of diabetes, and had a higher HbA1c than controls.
“Patients in the GLP-1 receptor agonists groups were also older, with a longer duration of diabetes and with a higher HbA1c than controls, as expected.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenThe echocardiographer performing the follow-up measurement was blinded to the baseline EAT thickness value.
“The echocardiographer performing the follow-up measurement was blinded to the baseline EAT thickness value.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataThe semaglutide and dulaglutide groups did not differ at baseline in EAT, age, ethnicity, c-peptide, lipids, blood pressure, heart rate, other diabetes drugs, lipid-lowering and blood pressure medications, renal or liver function tests, or diabetes history.
“There were no differences in EAT, age, ethnicity, c-peptide, lipids, blood pressure, heart rate, other diabetes drugs, lipid lowering and blood pressure medications, renal or liver function tests, and diabetes history between the semaglutide and dulaglutide groups.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataHbA1c was higher in the dulaglutide group than in the semaglutide group at baseline.
“However, HbA1c was higher in the dulaglutide group than in the semaglutide group (< 0.01).”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductreasoningPhysical activity did not differ between the groups.
“Physical activity did not differ between the groups, as most of the patients were sedentary to moderately active.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataEach group had 2 patients lost to follow-up.
“Each group had 2 patients lost to follow-up.”
Quote in the paperNot a substantial claimMay combine two claims.
PremisecitationEAT thickness by ultrasound correlates with waist circumference and intra-abdominal, intrahepatic, and intracardiac fat and serves as a good surrogate marker of visceral adiposity.
“However, EAT thickness by ultrasound has been shown to nicely correlate with waist circumference and intra-abdominal, intrahepatic, and intracardiac fat and serve as a good surrogate marker of visceral adiposity [1].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [1] Iacobellis, 2015, Local and systemic effects of the multifaceted epicardial adipose tissue depot, Nat Rev Endocrinol. source
Not checked in the free run.
May combine two claims.
InterpretationcitationEAT reduction can be mediated by a direct effect and activation of GLP-1R.
“suggesting that EAT reduction can be mediated by a direct effect and activation of GLP-1R [18].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [18] Iacobellis, 2017, Human epicardial fat expresses glucagon-like peptide 1 and 2 receptors genes, Horm Metab Res. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationExenatide treatment for 12 weeks was associated with a milder reduction of EAT thickness.
“A milder reduction of EAT thickness was also reported after 12 weeks of treatment with exenatide, a once weekly GLP-1 receptor agonist [17].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [17] Morano, 2015, Short-term effects of glucagon-like peptide 1 (GLP-1) receptor agonists on fat distribution in patients with type 2 diabetes mellitus: an ultrasonography study, Acta Diabetol. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationEAT has been associated with fatal and nonfatal coronary events regardless of traditional cardiovascular risk factors.
“Epicardial adipose tissue has been associated with fatal and nonfatal coronary events regardless of the traditional cardiovascular risk factors [21].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [21] Mahabadi, 2013, Association of epicardial fat with cardiovascular risk factors and incident myocardial infarction in the general population: the Heinz Nixdorf Recall Study, J Am Coll Cardiol. source
Not checked in the free run.
May combine two claims.
PremisecitationEAT can be easily measured with standard ultrasound and independently reflects intra-abdominal visceral fat and myocardial triglyceride content.
“Epicardial adipose tissue can be easily measured with standard ultrasound and independently reflects intra-abdominal visceral fat and myocardial triglyceride content [7–10].”
Quote in the paperSubstantial claim0 of 4 sources checked- cites [7] Iacobellis, 2003, Echocardiographic epicardial adipose tissue is related to anthropometric and clinical parameters of metabolic syndrome: a new indicator of cardiovascular risk, J Clin Endocrinol Metab. source
Not checked in the free run.
- cites [8] Pierdomenico, 2013, Metaanalysis of the relation of echocardiographic epicardial adipose tissue thickness and the metabolic syndrome, Am J Cardiol. source
Not checked in the free run.
- cites [9] Iacobellis, 2005, Epicardial adipose tissue and insulin resistance in obese subjects, J Clin Endocrinol Metab. source
Not checked in the free run.
- cites [10] Malavazos, 2010, Relation of echocardiographic epicardial fat thickness and myocardial fat, Am J Cardiol. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationLong-acting GLP-1 receptor analogs, such as semaglutide and dulaglutide, are convenient and effective therapeutic options given weekly administration and weight loss benefit.
“Long-acting GLP-1 receptor analogs, such as semaglutide and dulaglutide, are convenient and effective therapeutic options given the ease of weekly administration and the benefit of weight loss [19].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [19] Pratley, 2018, Semaglutide versus dulaglutide once weekly in patients with type 2 diabetes (SUSTAIN 7): a randomised, open-label, phase 3b trial, Lancet Diabetes Endocrinol. source
Not checked in the free run.
May combine two claims.
PremisecitationGLP-1 receptor agonists provide weight loss and cardiovascular protective effects.
“In addition to providing control of diabetes mellitus, GLP-1 receptor agonists have shown to provide weight loss and cardiovascular protective effects [12–15].”
Quote in the paperSubstantial claim0 of 4 sources checked- cites [12] Kristensen, 2019, Cardiovascular, mortality, and kidney outcomes with GLP-1 receptor agonists in patients with type 2 diabetes: a systematic review and meta-analysis of cardiovascular outcome trials, Lancet Diabetes Endocrinol.
Not checked in the free run.
- cites [13] Marso, 2016, Liraglutide and cardiovascular outcomes in type 2 diabetes, N Engl J Med. source
Not checked in the free run.
- cites [14] Gerstein, 2019, Dulaglutide and cardiovascular outcomes in type 2 diabetes (REWIND): a double-blind, randomised placebo-controlled trial, Lancet. source
Not checked in the free run.
- cites [15] Marso, 2016, Semaglutide and cardiovascular outcomes in patients with type 2 diabetes, N Engl J Med. source
Not checked in the free run.
Classified as probably not a substantial claim.
PremisecitationEAT plays a key role in the development and progression of atherosclerosis and coronary artery disease.
“Due to its peculiar anatomical location and proinflammatory transcriptome, EAT plays a key role in the development and progression of atherosclerosis and coronary artery disease [20].”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [20] Mazurek, 2003, Human epicardial adipose tissue is a source of inflammatory mediators, Circulation. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationA correlation between epicardial fat GLP-1R and genes encoding for brown fat activity and fatty acid oxidation has been reported.
“Interestingly, a correlation between epicardial fat GLP-1R and genes encoding for brown fat activity and fatty acid oxidation has been recently reported [26].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [26] Dozio, 2019, Epicardial adipose tissue GLP-1 receptor is associated with genes involved in fatty acid oxidation and white-to-brown fat differentiation: a target to modulate cardiovascular risk?, Int J Cardiol. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationDiabetic EAT has a peculiar proatherogenic transcriptome.
“Remarkably, diabetic EAT has a peculiar proatherogenic transcriptome, as recently reported [22].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [22] Camarena, 2017, Novel atherogenic pathways from the differential transcriptome analysis of diabetic epicardial adipose tissue, Nutr Metab Cardiovasc Dis. source
Not checked in the free run.
May combine two claims.
PremisecitationGLP-1 receptor is expressed in adipose tissue and mRNA and protein expressions are increased in epicardial and other visceral fat.
“GLP-1 receptor is expressed in the adipose tissue and mRNA, and protein expressions are increased in epicardial and other visceral fat [18, 24, 28, 29].”
Quote in the paperSubstantial claim0 of 4 sources checked- cites [18] Iacobellis, 2017, Human epicardial fat expresses glucagon-like peptide 1 and 2 receptors genes, Horm Metab Res. source
Not checked in the free run.
- cites [24] Yang, 2013, Glucagon-like peptide 1 regulates adipogenesis in 3T3-L1 preadipocytes, Int J Mol Med. source
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- cites [28] Vendrell, 2011, Study of the potential association of adipose tissue GLP-1 receptor with obesity and insulin resistance, Endocrinol. source
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- cites [29] Jendle, 2009, Weight loss with liraglutide, a once-daily human glucagon-like peptide-1 analogue for type 2 diabetes treatment as monotherapy or added to metformin, is primarily as a result of a reduction in fat tissue, Diabetes Obes Metab. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationEAT is a modifiable and measurable cardiovascular risk factor that is thicker in subjects with diabetes, owing to its strong correlation with visceral adiposity and insulin resistance.
“EAT has shown to be a modifiable and measurable cardiovascular risk factor that is thicker in subjects with diabetes, owing to its strong correlation with visceral adiposity and insulin resistance [7–9].”
Quote in the paperNot a substantial claim0 of 3 sources checked- cites [7] Iacobellis, 2003, Echocardiographic epicardial adipose tissue is related to anthropometric and clinical parameters of metabolic syndrome: a new indicator of cardiovascular risk, J Clin Endocrinol Metab. source
Not checked in the free run.
- cites [8] Pierdomenico, 2013, Metaanalysis of the relation of echocardiographic epicardial adipose tissue thickness and the metabolic syndrome, Am J Cardiol. source
Not checked in the free run.
- cites [9] Iacobellis, 2005, Epicardial adipose tissue and insulin resistance in obese subjects, J Clin Endocrinol Metab. source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationEAT activity can be downregulated in advanced chronic diseases, as observed in severe coronary artery disease.
“Epicardial adipose tissue activity can be downregulated in advanced chronic diseases, as we observed in severe coronary artery disease [3].”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [3] McAninch, 2015, Epicardial adipose tissue has a unique transcriptome modified in severe coronary artery disease, Obesity (Silver Spring). source
Not checked in the free run.
The paper relies on this without support.
There are no data on the effects of either semaglutide or dulaglutide on visceral fat, and their roles on EAT are unknown.
“However, to date, there are no data on the effects of either semaglutide or dulaglutide on visceral fat. The roles of semaglutide and dulaglutide, respectively, on EAT are also unknown.”
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Semaglutide treatment for 12 weeks resulted in a significant decrease of approximately 20% in the thickness of epicardial fat in patients with T2D and obesity.
“semaglutide treatment for 12 weeks resulted in a significant decrease of approximately 20% in the thickness of epicardial fat in patients with T2D and obesity”
Weekly semaglutide or dulaglutide causes substantial (of the order of 20%) and dose-dependent reduction in EAT thickness after 12 weeks in T2DM and obesity, while no EAT reduction occurs in the control group taking metformin alone.
“More recently, a controlled parallel study in 80 subjects with T2DM and obesity demonstrated that the weekly administration of semaglutide or dulaglutide, two long-acting GLP-1 RAs, caused a substantial (of the order of 20%) and dose-dependent reduction in EAT thickness after 12 weeks, while there was no EAT reduction in the control group taking metformin alone.”
From Dysregulated epicardial adipose tissue as a risk factor and potential therapeutic target of heart failure with preserved ejection fraction in diabetes (2022) · cites this paper as [128]
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.
Dulaglutide baseline EAT differs between tables
MinorTable 1 reports baseline dulaglutide-group EAT as 9.2 mm, while Table 2 reports 9.3 mm for the same group's baseline.
“| EAT (mm) | 9.5 ± 2.6 | 9.2 ± 2.2 | 7.1 ± 2.1 | < 0.01 |”
“| EAT (mm) | 9.5 ± 2.6 | 7.5 ± 2 | < 0.01 | 9.3 ± 2.2 | 7.7 ± 2.2 | < 0.01 | 7.1 ± 2.1 | 7.1 ± 2.2 | ns |”
Metformin-group HbA1c rose rather than improved
MinorThe abstract says HbA1c improved in all groups, but Table 2 shows it increasing from 5.8% to 5.9% in the metformin group.
“Body mass index (BMI) and HbA1c improved in all groups without reaching statistical significance.”
“| HbA1c (%) | 7.3 ± 1.2 | 6.9 ± 1.2 | ns | 8.2 ± 1.2 | 7.7 ± 1.1 | ns | 5.8 ± 0.6 | 5.9 ± 0.9 | ns |”
The citation lists haven’t been fetched yet
References 30 · Cited by 168
- Authors
- Iacobellis, G., & Villasante Fricke, A. C.
- Affiliations
- University of Miami (US)
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Miller School of Medicine, University of Miami, Miami, Florida
- Corresponding author
- Iacobellis, Gianluca
- ORCID
- Iacobellis, Gianluca
- Venue
- Journal of the Endocrine Society
- Publisher
- The Endocrine Society
- Published
- 2020-03-13
- Volume
- 4
- Issue
- 4
- Pages
- bvz042-bvz042
- ISSN
- 2472-1972 (ISSN-L)
- PMC
- PMC7069837
- OpenAlex
- W3012225375
- Semantic Scholar
- c73066394f11fd13c3de9bc9a86287039a68989f
- Cited by
- 168
- References
- 30
- Citations by year
- 2026: 28 · 2025: 42 · 2024: 34 · 2023: 27 · 2022: 18 · 2021: 15 · 2020: 4
- FWCI
- 10.03
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Journal of the Endocrine Society (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Disease and Adiposity
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
- Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
- Keywords
- semaglutide, dulaglutide, epicardial adipose tissue, epicardial fat thickness, GLP-1 receptor agonists, type 2 diabetes, obesity, cardiovascular risk, dose-dependent effects, metformin, body mass index, HbA1c
About these checks
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.
Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-10.
Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-10.
Statistics and arithmetic are recomputed, not judged.
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