International Session(Symposium)1(JSH・JSGE・JSGCS)
Thu. November 5th   9:00 - 11:20   Room 5: Portopia Hotel South Wing Ohwada A
IS-S1-6_H
Clinical and Anthropometric Characteristics of Non-obese NAFLD Patients
Takashi Shida1, Natsumi Oshida1, Hideo Suzuki1
1Faculty of Medicine, University of Tsukuba
Background/Objective Relatively many non-obese patients develop NAFLD. However, the pathophysiology of NAFLD has not been completely elucidated.
Methods The study included 404 patients with NAFLD. The NAFLD patients were divided into 3 groups as follows: 107 non-obese (BMI<25 kg/m2), 178 obese (≥25 to <30 kg/m2), and 64 severe obese (≥30 kg/m2), and compared with 253 patients without obesity and NAFLD (non-NAFLD group).
Results The non-obese group accounted for 26% of the men and 28% of the women. The skeletal muscle mass of the non-obese group was lower than that of the obese groups and equal to that of the patients in the non-NAFLD group. However, a remarkable difference in muscle steatosis was observed. Knee extension strength decreased. Compared with the obese groups, the non-obese group had a smaller visceral fat area, which was >100 cm2 in 59% of the men and 44% of the women. On the FAST score, 8.8% of men and 32.6% of women in the non-obese NAFLD group were assessed as having NASH. Multiple regression analysis revealed that the factors contributing towards increased liver fat accumulation in the non-obese patients were visceral fat area, HbA1c, myostatin, and leptin levels.
Conclusions In the non-obese NAFLD patients, in addition to the increase in visceral fat, a decrease in the muscle mass and strength, deterioration of muscle composition (sarcopenia), and associated impaired glucose tolerance were considered important factors.
Index Term 1: non-obese NAFLD
Index Term 2: sarcopenia
Page Top