Akihiko Ito, Mitsuo Hashimoto, Jun Tanihata, Sachi Matsubayashi, Ryoko Sasaki, Shota Fujimoto, Hironori Kawamoto, Yusuke Hosaka, Akihiro Ichikawa, Tsukasa Kadota, Yu Fujita, Daisuke Takekoshi, Sabro Ito, Shunsuke Minagawa, Takanori Numata, Hiromichi Hara, Tatsuki Matsuoka, Jun Udaka, Jun Araya, Mitsuru Saito, Kazuyoshi Kuwano
BACKGROUND: Sarcopenia is characterized by the loss of skeletal muscle mass and strength and is associated with poor prognosis in patients with chronic obstructive pulmonary disease (COPD). Cigarette smoke (CS) exposure, a major cause for COPD, induces mitochondrial damage, which has been implicated in sarcopenia pathogenesis. The current study sought to examine the involvement of insufficient Parkin-mediated mitophagy, a mitochondrion-selective autophagy, in the mechanisms by which dysfunctional mitochondria accumulate with excessive reactive oxygen species (ROS) production in the development of COPD-related sarcopenia...
April 3, 2022: Journal of Cachexia, Sarcopenia and Muscle