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Sarcopaenia is associated with NAFLD independently of obesity and insulin resistance: Nationwide surveys (KNHANES 2008-2011)

Authors
 Yongho Lee  ;  Kyu Sik Jung  ;  Seung Up Kim  ;  Hyejin Yoon  ;  Yu Jung Yun  ;  Byung Wan Lee  ;  Eun Seok Kang  ;  Kwang Hyub Han  ;  Hyun Chul Lee  ;  Bong Soo Cha 
Citation
 Journal of Hepatology, Vol.63(2) : 486-493, 2015 
Journal Title
 Journal of Hepatology 
ISSN
 0168-8278 
Issue Date
2015
Abstract
BACKGROUND & AIMS: Although sarcopaenia is associated with obesity-related comorbidities, its influence on non-alcoholic fatty liver disease (NAFLD) or steatohepatitis has not been fully determined. We aimed to investigate the direct relationship between sarcopaenia and NAFLD or steatohepatitis in the general population. METHODS: We conducted a cross-sectional study using nationally representative samples of 15,132 subjects from the Korea National Health and Nutrition Examination Surveys 2008-2011. Subjects were defined as having NAFLD when they had higher scores from previously validated NAFLD prediction models such as the hepatic steatosis index, comprehensive NAFLD score and NAFLD liver fat score. BARD and FIB-4 scores were used to define advanced fibrosis in subjects with NAFLD. The skeletal muscle index (SMI) [SMI(%)=total appendicular skeletal muscle mass (kg)/weight (kg)×100] measured by dual-energy X-ray absorptiometry was used to diagnose sarcopaenia with cut points of 32.2% for men and 25.5% for women. RESULTS: SMI was inversely correlated with all NAFLD predicting scores (Ps<0.001). After stratification, sarcopaenic subjects had an increased risk of NAFLD regardless of obesity (odds ratios [ORs]=1.55 to 3.02, depending on models; all Ps<0.001) or metabolic syndrome (ORs=1.63 to 4.00, all Ps<0.001). Multiple logistic regression analysis also demonstrated this independent association between sarcopaenia and NAFLD after adjusting for confounding factors related to obesity or insulin resistance (ORs=1.18 to 1.22, all Ps<0.001). Furthermore, among the NAFLD population, subjects with lower SMIs were likely to have advanced fibrosis compared with non-sarcopaenic individuals (BARD and FIB-4: ORs=1.83 and 1.69, respectively; both Ps<0.001). Compared with non-exercised subjects, individuals who exercised regularly had a lower risk of NAFLD (p<0.001), particularly among obese people with well-preserved muscle mass. CONCLUSIONS: Sarcopaenia is associated with increased risks of NAFLD and advanced fibrosis, independent of obesity or metabolic control.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/140643
DOI
10.1016/j.jhep.2015.02.051
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실)
Yonsei Authors
강은석(Kang, Eun Seok) ; 김승업(Kim, Seung Up) ; 윤혜진(Yoon, Hye Jin) ; 이병완(Lee, Byung Wan) ; 이용호(Lee, Yong Ho) ; 이현철(Lee, Hyun Chul) ; 정규식(Jung, Kyu Sik) ; 차봉수(Cha, Bong Soo) ; 한광협(Han, Kwang Hyup)
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Full Text
http://www.sciencedirect.com/science/article/pii/S0168827815001762
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