Aging clinical and experimental research · 2021
Excessive alcohol intake and liver fibrosis are associated with skeletal muscle mass reduction in elderly men: the Wakayama study.
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Onishi Shuhei, Miyai Nobuyuki, Zhang Yan, Oka Toshifumi, Nogami Eriko, Utsumi Miyoko, Arita Mikio
Аннотация
BACKGROUND: Excessive alcohol intake complicated by liver dysfunction has been presumed to affect skeletal muscles. This study aimed to examine the association between excessive alcohol intake, liver fibrosis, and loss of skeletal muscle mass in elderly men.
METHODS: The study participants comprised 799 community-dwelling elderly men (age, 71 ± 3 years) with no history of treatment for liver disease. Bioelectrical impedance analysis was performed to estimate the appendicular skeletal muscle mass (ASM) of each participant. The ASM values were also normalized for height (ASM index). Liver fibrosis was evaluated using the Fib4 index, which was calculated using participant age, AST level, ALT level, and platelet count. Usual alcohol intake was estimated based on the type of alcohol, frequency of drinking, and amount of alcohol consumed per day.
RESULTS: Among the excess drinkers (≥ 20 g/day), the ASM index of the subgroup with liver fibrosis (Fib4 index ≥ 2.67) was significantly lower than that of the subgroup with no liver fibrosis (Fib4 index < 2.67). However, no significant difference between the subgroups was found in the non-drinkers and moderate drinkers (< 20 g/day). In multiple regression analysis, the Fib4 index was significantly associated with the ASM index, independent of potential confounding factors. The association between the Fib4 index and ASM index was more pronounced in excess drinkers than in non-drinkers and moderate drinkers.
CONCLUSION: These results suggest that liver fibrosis is associated with loss of skeletal muscle mass in elderly men, and excessive alcohol intake combined with liver fibrosis may lead to greater muscle mass reduction than each individual condition.
METHODS: The study participants comprised 799 community-dwelling elderly men (age, 71 ± 3 years) with no history of treatment for liver disease. Bioelectrical impedance analysis was performed to estimate the appendicular skeletal muscle mass (ASM) of each participant. The ASM values were also normalized for height (ASM index). Liver fibrosis was evaluated using the Fib4 index, which was calculated using participant age, AST level, ALT level, and platelet count. Usual alcohol intake was estimated based on the type of alcohol, frequency of drinking, and amount of alcohol consumed per day.
RESULTS: Among the excess drinkers (≥ 20 g/day), the ASM index of the subgroup with liver fibrosis (Fib4 index ≥ 2.67) was significantly lower than that of the subgroup with no liver fibrosis (Fib4 index < 2.67). However, no significant difference between the subgroups was found in the non-drinkers and moderate drinkers (< 20 g/day). In multiple regression analysis, the Fib4 index was significantly associated with the ASM index, independent of potential confounding factors. The association between the Fib4 index and ASM index was more pronounced in excess drinkers than in non-drinkers and moderate drinkers.
CONCLUSION: These results suggest that liver fibrosis is associated with loss of skeletal muscle mass in elderly men, and excessive alcohol intake combined with liver fibrosis may lead to greater muscle mass reduction than each individual condition.