Cited by 48Antioxidant Activity and Oxidative StressMitochondrial Function and PathologyAdipose Tissue and Metabolism

A Mitochondria-Targeted Vitamin E Derivative Decreases Hepatic Oxidative Stress and Inhibits Fat Deposition in Mice , ,

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Mao, Gaowei, Kraus, George A., Kim, Ikyon, Spurlock, Michael E., Bailey, Theodore B., Zhang, Qijing, Beitz, Donald C.·2010·The Journal of Nutrition

Abstract

Our objective in this study was to determine whether a mitochondria-targeted vitamin E derivative (MitoVit E) would decrease oxidative stress and associated obesity by preventing a previously proposed aconitase inhibition cascade. Sixty-four mice were fed a high-fat (HF) diet for 5 wk. They were then switched to either a low-fat (LF) or a medium-fat (MF) diet and gavaged with MitoVit E (40 mg MitoVit E x kg body weight(-1)) or drug vehicle (10% ethanol in 0.9% NaCl solution) every other day for 5 wk. Epididymal fat weight, as well as liver lipid and remaining carcass lipid, were significantly lower in the MF group receiving MitoVit E (MF-E) than in the MF group receiving vehicle only (MF-C). Liver mitochondrial H(2)O(2) production and the protein carbonyl level were also significantly lower in MF-E than in MF-C mice. In contrast, none of the biochemical variables (aconitase activity, ATP and H(2)O(2) production, and protein carbonyl level) in the muscle mitochondria were modified by MitoVit E in either MF or LF groups. Expression of acetyl-CoA carboxylase and fatty acid synthase in both liver and adipose tissue of MF groups was not affected by MitoVit E. However, expression of carnitine palmitoyltransferase 1a in the liver and uncoupling protein 2 in adipose tissue were significantly enhanced by MitoVit E in both LF and MF groups. In conclusion, MitoVit E attenuates hepatic oxidative stress and inhibits fat deposition in mice but not through alleviation of the aconitase inhibition cascade.

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Crossref · 10.3945/jn.110.121715

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Authors
Mao, G., Kraus, G. A., Kim, I., Spurlock, M. E., Bailey, T. B., Zhang, Q., & Beitz, D. C.
Affiliations
Iowa State University (US)
Corresponding author
Beitz, Donald C.
Venue
The Journal of Nutrition
Publisher
Elsevier BV
Published
2010-08
Volume
140
Issue
8
Pages
1425-1431
ISSN
0022-3166 (ISSN-L)
OpenAlex
W2145054353
Cited by
48
References
31
Citations by year
2026: 3 · 2025: 4 · 2024: 3 · 2023: 4 · 2022: 5 · 2021: 2 · 2020: 4 · 2018: 3 · 2017: 1 · 2016: 6 · 2015: 3 · 2014: 3 · 2013: 1 · 2012: 3
FWCI
1.24
Type
journal article
Language
en
Open access
Locations
  • Journal of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
hepatic oxidative stress, fat deposition, obesity, aconitase inhibition, high-fat diet, liver mitochondria, hydrogen peroxide production, protein carbonylation, CPT1A, UCP2, acetyl-CoA carboxylase, fatty acid synthase, adipose tissue, hepatic lipid metabolism
MeSH terms
Aconitate Hydratase, Adenosine Triphosphate, Adipose Tissue, Animals, Body Composition, Body Weight, Diet, Dietary Fats, Eating, Hydrogen Peroxide, Lipids, Liver, Male, Mice, Inbred C57BL, Mitochondria, Liver, Mitochondria, Muscle, Obesity, Organ Size, Organophosphorus Compounds, RNA, Messenger, Ubiquinone, Gene Expression, Oxidative Stress, Muscle, Skeletal, Mice, Fatty Acid Synthases

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