title: Dynamic changes of mitochondrial fission proteins after transient cerebral ischemia in mice.
abstract: With fusion or fission, mitochondria alter their morphology in response to various physiological and pathological stimuli resulting in either elongated, tubular, interconnected or fragmented form. Immunohistochemistry and Western blot analyses were performed at 2, 7, 14 and 28 d after 90 min of transient middle cerebral artery occlusion (tMCAO) in mice. The present study showed that mitochondrial fission protein fission 1 (Fis1) and phosphorylated dynamin-related protein 1 (P-Drp1) both progressively increased with the peak at 14 d after tMCAO. Double immunofluorescent analysis showed the number of double positive cells with Fis1/Drp1 reduced between 2 and 28 d after 90 min of tMCAO, and also showed some double positive cells with Fis1/terminal deoxynucleotidyl transferase-mediated dUTP-digoxigenin nick end labeling (TUNEL) in the peri-infract regions at 2d after the reperfusion. The present study suggests a progressive activation of mitochondrial fission proteins Fis1 and P-Drp1 in relation to apoptotic process in neural cells of the peri-infract regions after tMCAO.
authors.affiliation: Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Okayama 700-8558, Japan.
authors.forename: Wentao
authors.initials: W
authors.lastname: Liu
authors.forename: Fengfeng
authors.initials: F
authors.lastname: Tian
authors.forename: Tomoko
authors.initials: T
authors.lastname: Kurata
authors.forename: Nobutoshi
authors.initials: N
authors.lastname: Morimoto
authors.forename: Koji
authors.initials: K
authors.lastname: Abe
mesh_terms: D000818:Animals; D015153:Blotting, Western; D004195:Disease Models, Animal; D034281:Dynamins / Q000032:analysis / Q000096:biosynthesis*; D005455:Fluorescent Antibody Technique; D007150:Immunohistochemistry; D020287:In Situ Nick-End Labeling; D002546:Ischemic Attack, Transient / Q000378:metabolism*; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D024101:Mitochondrial Proteins / Q000032:analysis / Q000096:biosynthesis*
chemical_list: C561064:FIS1 protein, mouse; D024101:Mitochondrial Proteins; C486391:Dnm1l protein, mouse; D034281:Dynamins