Chaiyasing Rattanatrai, Ishikawa Takuro, Warita Katsuhiko, Hosaka Yoshinao Z
Laboratory of Basic Veterinary Science, United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan.
Faculty of Veterinary Sciences, Office of Academic Affairs, Maha Sarakham University, Maha Sarakham 44000, Thailand.
J Vet Med Sci. 2021 Jul 2;83(7):1022-1030. doi: 10.1292/jvms.20-0696. Epub 2021 May 10.
This study aimed to investigate the function of estrogen receptors (ERs) in myoregeneration and intermuscular adipogenesis. Ovariectomized (OVX) ERα knockout (KO) mice and ERβ KO mice were used to assess the effect of estrogen on the myoregenerative process. Tibialis anterior muscle was collected on days 7, 10, and 14 after cardiotoxin injection to assess myotube morphology and adipogenesis area. Regenerated myotubes from OVX-ERβ KO mice were consistently smaller in diameter than those from OVX-ERα KO and OVX-wild-type mice, whereas the adipogenesis area of OVX-ERβ KO mice was consistently greater than that of the other types. Therefore, ERβ may be an influential factor in promoting myoregeneration and adipogenesis inhibition compared to ERα.
本研究旨在探讨雌激素受体(ERs)在肌肉再生和肌间脂肪生成中的作用。采用卵巢切除(OVX)的ERα基因敲除(KO)小鼠和ERβ基因敲除小鼠来评估雌激素对肌肉再生过程的影响。在注射心脏毒素后第7、10和14天采集胫骨前肌,以评估肌管形态和脂肪生成面积。OVX-ERβ基因敲除小鼠再生的肌管直径始终小于OVX-ERα基因敲除小鼠和OVX野生型小鼠,而OVX-ERβ基因敲除小鼠的脂肪生成面积始终大于其他类型小鼠。因此,与ERα相比,ERβ可能是促进肌肉再生和抑制脂肪生成的一个影响因素。