Cited by 129Liver Disease Diagnosis and TreatmentMetabolism and Genetic DisordersMitochondrial Function and Pathology

Oxidation of Hepatic Carnitine Palmitoyl Transferase-I (CPT-I) Impairs Fatty Acid Beta-Oxidation in Rats Fed a Methionine-Choline Deficient Diet

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Serviddio, Gaetano, Giudetti, Anna M., Bellanti, Francesco, Priore, Paola, Rollo, Tiziana, Tamborra, Rosanna, Siculella, Luisa, Vendemiale, Gianluigi +2 more·2011·PLoS ONE

Abstract

There is growing evidence that mitochondrial dysfunction, and more specifically fatty acid β-oxidation impairment, is involved in the pathophysiology of non-alcoholic steatohepatitis (NASH). The goal of the present study was to achieve more understanding on the modification/s of carnitinepalmitoyltransferase-I (CPT-I), the rate-limiting enzyme of the mitochondrial fatty acid β-oxidation, during steatohepatitis. A high fat/methionine-choline deficient (MCD) diet, administered for 4 weeks, was used to induce NASH in rats.We demonstrated that CPT-I activity decreased, to the same extent, both in isolated liver mitochondria and in digitonin-permeabilized hepatocytes from MCD-diet fed rats.At the same time, the rate of total fatty acid oxidation to CO(2) and ketone bodies, measured in isolated hepatocytes, was significantly lowered in treated animals when compared to controls. Finally, an increase in CPT-I mRNA abundance and protein content, together with a high level of CPT-I protein oxidation was observed in treated rats. A posttranslational modification of rat CPT-I during steatohepatitis has been here discussed.

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Crossref · 10.1371/journal.pone.0024084

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  • In a NASH rat model fed a methionine-choline-deficient diet, CPT1A activity and mitochondrial FAO were notably reduced despite increased CPT1A mRNA expression.

    “In this study, a NASH rat model fed a methionine-choline-deficient diet had a notable reduction in CPT1A activity and mitochondrial FAO despite increased CPT1A mRNA expression.”

    From Mitochondrial fatty acid oxidation in obesity (2013) · cites this paper as [150]

  • Formation of a 4-hydroxynonenal-CPT1 adduct caused by lipid peroxidation as a consequence of ROS overproduction is the main cause of impaired FAO and lipid removal from hepatocytes.

    “The formation of a 4-hydroxynonenal-CPT1 adduct caused by lipid peroxidation as a consequence of ROS overproduction is the main cause of impaired FAO and lipid removal from hepatocytes.”

    From Mitochondrial fatty acid oxidation in obesity (2013) · cites this paper as [150]

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  1. [20]Kohjima M Enjoji M Higuchi N Kato M Kotoh K 2007 Re-evaluation of fatty acid metabolism-related gene expression in nonalcoholic fatty liver disease. Int J Mol Med 20 351 358 17671740

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Authors
Serviddio, G., Giudetti, A. M., Bellanti, F., Priore, P., Rollo, T., Tamborra, R., Siculella, L., Vendemiale, G., Altomare, E., & Gnoni, G. V.
Affiliations
  • University of Foggia (IT)
  • University of Salento (IT)
Corresponding author
Gnoni, Gabriele V.
Venue
PLoS ONE
Published
2011-09-01
Volume
6
Issue
9
Pages
e24084
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2007759293
Cited by
128
References
36
Citations by year
2026: 5 · 2025: 6 · 2024: 7 · 2023: 7 · 2022: 8 · 2021: 10 · 2020: 9 · 2019: 9 · 2018: 11 · 2017: 10 · 2016: 7 · 2015: 14 · 2014: 9 · 2013: 9 · 2012: 6
FWCI
6.03
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • AIRUS (submittedVersion)
Funders
Ministero dell’Istruzione, dell’Università e della Ricerca
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
carnitine palmitoyltransferase 1, fatty acid beta-oxidation, nonalcoholic steatohepatitis, methionine-choline-deficient diet, mitochondrial dysfunction, hepatocytes, liver mitochondria, post-translational modification, ketone synthesis, high-fat diet
MeSH terms
Acetyl-CoA Carboxylase, Animals, Blood Glucose, Carnitine O-Palmitoyltransferase, Cell Membrane Permeability, Choline, Diet, Fatty Acids, Feeding Behavior, Liver, Male, Malonyl Coenzyme A, Methionine, Mitochondria, Liver, Oxidation-Reduction, RNA, Messenger, 3-Hydroxyacyl CoA Dehydrogenases, Gene Expression Regulation, Enzymologic, Rats, Wistar, Palmitic Acid, Hepatocytes, Mitochondrial Membranes, Rats, Enzyme Assays

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