Degradation of Mitochondrial Phospholipids During Experimental Cerebral Ischemia in Rats

Ichiro Nakahara, Haruhiko Kikuchi, Waro Taki, Syogo Nishi, Makoto Kito, Yasuhiro Yonekawa, Yasunobu Goto, Nobuyoshi Ogata

研究成果: Article査読

45 被引用数 (Scopus)

抄録

Changes in content of brain mitochondrial phospholipids were examined in rats after 30 and 60 min of decapitation ischemia compared with controls, to explore the degradation of the mitochondrial membrane and its relation to dysfunction of mitochondria. Activities of respiratory functions and respiratory enzymes (cytochrome c oxidase; F0F1‐ATPase) decreased significantly during ischemia. Considerable decreases in cardiolipin and phosphatidylinositol content were observed after 60 min, and other phospholipids showed similar but nonsignificant decreases in content. The amount of polyunsaturated fatty acid chains, such as arachidonic and docosahexaenoic acids, was reduced in each phospholipid, in some cases significantly, after 30 and 60 min of ischemia in time‐dependent manners. Degradation of mitochondrial phospholipids during ischemia associated with the deterioration of mitochondrial respiratory functions suggested the significance of such changes in phospholipid content in disintegration of cellular energy metabolism during cerebral ischemia.

本文言語English
ページ(範囲)839-844
ページ数6
ジャーナルJournal of neurochemistry
57
3
DOI
出版ステータスPublished - 09-1991
外部発表はい

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Cellular and Molecular Neuroscience

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