Independent association of liver fat accumulation with insulin resistance - PubMed (original) (raw)
. 2014 Jul-Aug;8(4):e350-5.
doi: 10.1016/j.orcp.2013.08.002. Epub 2013 Sep 5.
Takashi Nihashi 2, Yuanying Li 3, Yo Hotta 4, Kunihiro Matsushita 5, Takashi Muramatsu 6, Rei Otsuka 7, Masaaki Matsunaga 8, Kentaro Yamashita 9, Chaochen Wang 3, Mayu Uemura 3, Akiko Harada 10, Hiroshi Fukatsu 11, Hideaki Toyoshima 12, Atsuko Aoyama 3, Koji Tamakoshi 13
Affiliations
- PMID: 25091356
- DOI: 10.1016/j.orcp.2013.08.002
Independent association of liver fat accumulation with insulin resistance
Hiroshi Yatsuya et al. Obes Res Clin Pract. 2014 Jul-Aug.
Abstract
Background: To examine the association of intrahepatic fat with homeostasis model assessment-insulin resistance (HOMA-IR), a marker of insulin resistance, in Japanese adults, and whether intrahepatic fat is associated with insulin resistance independent of waist circumference and other measures of obesity.
Methods: Fifty-three individuals aged 37-69 were studied. Spectrum obtained using a 3-T magnetic resonance imager was analysed with LCModel to quantify intrahepatic fat. Blood levels of insulin, glucose and other biochemical markers were obtained after 8h or more fasting. Percent body fat was estimated by a bioelectrical impedance analyzer. HOMA-IR and intrahepatic fat content were log-transformed in the analysis.
Results: We found a positive correlation between intrahepatic fat and HOMA-IR, which was independent of the anthropometric measures of obesity. In contrast, significant and positive correlations of body mass index, percent body fat, and waist circumference with HOMA-IR were largely explained by their associations with intrahepatic fat. Intrahepatic fat was positively associated with alanine transaminase and triglycerides even after adjustment for HOMA-IR.
Conclusion: Intrahepatic fat was associated with insulin resistance independent of age, sex, and measures of obesity in Japanese adults. Hypertriglyceridemia and liver injury may directly occur subsequent to intrahepatic fat accumulation.
Keywords: Ectopic fat; Insulin resistance; Liver; Magnetic resonance spectroscopy; Obesity.
Copyright © 2013 Asian Oceanian Association for the Study of Obesity. Published by Elsevier Ltd. All rights reserved.
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