PMID- 33714428 OWN - NLM STAT- MEDLINE DCOM- 20211108 LR - 20211108 IS - 1532-3129 (Electronic) IS - 0021-9975 (Linking) VI - 183 DP - 2021 Feb TI - Skeletal Muscle Fibre Type Changes in an Avian Model of Hepatic Fibrosis. PG - 26-32 LID - S0021-9975(21)00001-3 [pii] LID - 10.1016/j.jcpa.2021.01.001 [doi] AB - We investigated the susceptibility of type I and type II skeletal myofibres to atrophy in hens with hepatic fibrosis induced by bile duct ligation (BDL). Seven hens, approximately 2 years old, were randomly assigned to BDL (n = 4) and sham surgery (SHAM) (n = 3) groups. Mean body weight and mean liver weight as a percentage of mean body weight were significantly lower in the BDL group than in the SHAM group at 4 weeks post surgery (P = 0.002, P = 0.005, respectively). Mean plasma aspartate aminotransferase activity was slightly higher, while total cholesterol (P <0.001), total bilirubin (P = 0.022) and NH(3) (P = 0.048) concentrations were significantly higher in the BDL group than in the SHAM group. Liver lesions were induced in all hens in the BDL group. The weights of the pectoralis (PCT) (P = 0.049) and flexor perforans et perforatus digiti III (FPPD III) muscles (P = 0.006) as a percentage of body weight were significantly decreased in the BDL group. A significantly reduced mean myofibre cross-sectional area in the PCT of BDL hens (P = 0.005) was indicative of atrophy. No significant differences were observed in the fibre type composition of the PCT, supracoracoideus or FPPD III muscles between the SHAM and BDL groups. However, there was an approximate 43% increase in the number of type I fibres in the femorotibialis lateralis of the BDL group and small angular type II fibres and large round type I fibres in this muscle were characteristic of peripheral neuropathy. The results suggest that type II fibres are more susceptible to atrophy than type I fibres in this model of hepatic fibrosis. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Nagasao, Jun AU - Nagasao J AD - Department of Food Function and Safety, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. Electronic address: nagasao@vmas.kitasato-u.ac.jp. FAU - Fukasawa, Hanae AU - Fukasawa H AD - Department of Veterinary Anatomy, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. FAU - Yoshioka, Kazuki AU - Yoshioka K AD - Department of Veterinary Anatomy, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. FAU - Miyamoto, Miki AU - Miyamoto M AD - Department of Food Function and Safety, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. FAU - Iwaki, Yuna AU - Iwaki Y AD - Department of Food Function and Safety, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. FAU - Kajiwara, Kurumi AU - Kajiwara K AD - Department of Food Function and Safety, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. FAU - Sato, Koudai AU - Sato K AD - Department of Food Function and Safety, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. FAU - Arihara, Keizo AU - Arihara K AD - Department of Food Function and Safety, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan. LA - eng PT - Journal Article PT - Randomized Controlled Trial, Veterinary DEP - 20210203 PL - England TA - J Comp Pathol JT - Journal of comparative pathology JID - 0102444 SB - IM MH - Animals MH - Bile Ducts MH - *Chickens MH - Female MH - Liver/pathology MH - *Liver Cirrhosis/pathology/veterinary MH - Muscle Fibers, Skeletal/*pathology OTO - NOTNLM OT - avian OT - hepatic fibrosis OT - myopathy OT - skeletal muscle fibre types EDAT- 2021/03/15 06:00 MHDA- 2021/11/09 06:00 CRDT- 2021/03/14 20:27 PHST- 2020/03/10 00:00 [received] PHST- 2020/08/11 00:00 [revised] PHST- 2021/01/02 00:00 [accepted] PHST- 2021/03/14 20:27 [entrez] PHST- 2021/03/15 06:00 [pubmed] PHST- 2021/11/09 06:00 [medline] AID - S0021-9975(21)00001-3 [pii] AID - 10.1016/j.jcpa.2021.01.001 [doi] PST - ppublish SO - J Comp Pathol. 2021 Feb;183:26-32. doi: 10.1016/j.jcpa.2021.01.001. Epub 2021 Feb 3.