Cited by 365Adipose Tissue and MetabolismMitochondrial Function and PathologyMetabolism, Diabetes, and Cancer

Mitochondria are impaired in the adipocytes of type 2 diabetic mice.

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Choo, H.-J., Kim, J.-H., Kwon, O.-B., Lee, C. S., Mun, J. Y., Han, S. S., Yoon, Y.-S., Yoon, G. +2 more·2006·Diabetologia

Abstract

Aims/hypothesis The aim of this study was to confirm a link between mitochondrial dysfunction and type 2 diabetes.Materials and methods Cellular levels of mitochondrial proteins, cellular mitochondrial DNA content, and mitochondrial function and morphology were assessed by MitoTracker staining and electron microscopy, in white adipose tissue of 12-week-old male wild-type, obese (ob/ob), and diabetic (db/db) mice.Results Levels of mitochondrial proteins were found to be very similar in the livers and muscles of all the mice studied. However, levels were greatly decreased in the adipocytes of db/db mice, but not in those of the wild-type and ob/ob mice. Levels of mitochondrial DNA were also found to be considerably reduced in the adipocytes of db/db mice. MitoTracker staining and under electron microscopy revealed that the number of mitochondria was reduced in adipocytes of db/db mice. Respiration and fatty acid oxidation studies indicated mitochondrial dysfunction in adipocytes of db/db mice. Interestingly, there was an increase in mitochondria and mitochondrial protein production in adipocytes of db/db mice treated with rosiglitazone, an agent that enhances insulin sensitivity.Conclusions/interpretation Taken together, these data indicate that mitochondrial loss in adipose tissue is correlated with the development of type 2 diabetes.

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Authors
Choo, H.-J., Kim, J.-H., Kwon, O.-B., Lee, C. S., Mun, J. Y., Han, S. S., Yoon, Y.-S., Yoon, G., Choi, K.-M., & Ko, Y.-G.
Affiliations
  • Korea University (KR)
  • Ajou University (KR)
Corresponding author
Ko, Y.-G.
Venue
Diabetologia
Published
2006-02-25
Volume
49
Issue
4
Pages
784-791
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W2051674591
Cited by
365
References
27
Citations by year
2026: 5 · 2025: 9 · 2024: 17 · 2023: 16 · 2022: 13 · 2021: 14 · 2020: 25 · 2019: 17 · 2018: 14 · 2017: 18 · 2016: 23 · 2015: 20 · 2014: 24 · 2013: 26 · 2012: 19
FWCI
14.36
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
  • AJOU Open Repository (Ajou University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
mitochondrial dysfunction, type 2 diabetes, adipocytes, white adipose tissue, mitochondrial DNA, mitochondrial respiration, fatty acid oxidation, rosiglitazone, insulin sensitivity, db/db mice, ob/ob mice, mitochondrial loss
MeSH terms
Rosiglitazone, Animals, Diabetes Mellitus, Type 2, DNA, Mitochondrial, Female, Male, Microscopy, Electron, Mitochondria, Adipocytes, Mitochondrial Proteins, Thiazolidinediones, Mice, Rats

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