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Skeletal muscle mass to visceral fat area ratio is an important determinant affecting hepatic conditions of non-alcoholic fatty liver disease

  • Original Article—Liver, Pancreas, and Biliary Tract
  • Published:
Journal of Gastroenterology Aims and scope Submit manuscript

Abstract

Background

Not only obesity but also sarcopenia is associated with NAFLD. The influence of altered body composition on the pathophysiology of NAFLD has not been fully elucidated. The aim of this study is to determine whether skeletal muscle mass to visceral fat area ratio (SV ratio) affects NAFLD pathophysiology.

Methods

A total of 472 subjects were enrolled. The association between SV ratio and NAFLD pathophysiological factors was assessed in a cross-sectional nature by stratification analysis.

Results

When the SV ratio was stratified by quartiles (Q 1Q 4), the SV ratio showed a negative relationship with the degree of body mass index, HOMA-IR, and liver stiffness (Q 1, 8.9 ± 7.5 kPa, mean ± standard deviation; Q 2, 7.5 ± 6.2; Q 3, 5.8 ± 3.7; Q 4, 5.0 ± 1.9) and steatosis (Q 1, 282 ± 57 dB/m; Q 2, 278 ± 58; Q 3, 253 ± 57; Q 4, 200 ± 42) measured by transient elastography. Levels of leptin and biochemical markers of liver cell damage, liver fibrosis, inflammation and oxidative stress, and hepatocyte apoptosis were significantly higher in subjects in Q 1 than in those in Q 2, Q 3, or Q 4. Moreover, fat contents in femoral muscles were significantly higher in subjects in Q 1 and the change was associated with weakened muscle strength. In logistic regression analysis, NAFLD subjects with the decreased SV ratio were likely to have an increased risk of moderate-to-severe steatosis and that of advanced fibrosis.

Conclusions

Decreased muscle mass coupled with increased visceral fat mass is closely associated with an increased risk for exacerbating NAFLD pathophysiology.

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Abbreviations

ALT:

Alanine aminotransferase

AST:

Aspartate aminotransferase

BMI:

Body mass index

CAP:

Controlled attenuation parameter

CEUS:

Contrast-enhanced ultrasonography

EMCL:

Extra-myocellular lipid

FFA:

Free fatty acid

FGF21:

Fibroblast growth factor 21

FPG:

Fasting plasma glucose

HDL-C:

High-density lipoprotein-cholesterol

HOMA-IR:

Homeostasis model assessment-insulin resistance

hs-CRP:

High-sensitivity C-reactive protein

IHL:

Intrahepatic lipid

IL-6:

Interleukin-6

IMCL:

Intra-myocellular lipid

LDL-C:

Low-density lipoprotein-cholesterol

LPS:

Lipopolysaccharide

LS:

Liver stiffness

1H-MRS:

Proton magnetic resonance spectroscopy

MSTN:

Myostatin

NAFLD:

Non-alcoholic fatty liver disease

NASH:

Non-alcoholic steatohepatitis

Sep:

Selenoprotein-P

SV ratio:

Skeletal muscle mass to visceral fat area ratio

TBARS:

2-Thiobarbituric acid reactive substances

TG:

Triglyceride

TNF-α:

Tumor necrosis factor-α

γ-GT:

gamma-Glutamyltransferase

VFA:

Visceral fat area

VLDL:

Very low density lipoprotein

WFA+-M2BP:

Wisteria floribunda agglutinin-positive Mac-2 binding protein

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Correspondence to Junichi Shoda.

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Conflict of interest

All authors declare that they have no conflicts of interest.

Funding

This work was supported by in part by Grants-in-Aids for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (Nos. 25282212, 26282191, 26293284, 26293297, 26670109, 15K15037, 15K15488, and 16K15188).

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Shida, T., Akiyama, K., Oh, S. et al. Skeletal muscle mass to visceral fat area ratio is an important determinant affecting hepatic conditions of non-alcoholic fatty liver disease. J Gastroenterol 53, 535–547 (2018). https://doi.org/10.1007/s00535-017-1377-3

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  • DOI: https://doi.org/10.1007/s00535-017-1377-3

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