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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국운동생리학회 운동과학 운동과학 제25권 제2호
발행연도
2016.1
수록면
100 - 109 (10page)

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PURPOSE: This study was to investigate the effect of CaMKII mediated nitric oxide formation on skeletal muscle contraction induced mitochondria biogenesis. METHODS: To examine the effect of CaMKII inhibition on nitric oxide synthase regulation during muscle contraction or exercise, we designed in vivo and in vitro study. In vitro study was skeletal muscle primary study for identify relation between CaMKII and NOS and in vivo study was treadmill running study for NO formation regulation by nNOS or eNOS in tissue level. RESULTS: In skeletal muscle primary cell, nNOS inhibition by nNOS inhibitor or nNOS KD inhibited contraction induced NO formation or mitochondria biogenesis related factor upregulation including PGC-1α deacetylation or mitochondrial mRNA but not by eNOS inhibitor or eNOS KD. CaMKII inhibition by AIP attenuated contraction induced NO formation, nNOS phosphorylation and mitochondria biogenesis related factor upregulation including PGC-1α deacetylation or mitochondrial mRNA. However in vivo nNOS or eNOS KD both inhibited NO formation and mitochondria biogenesis related factor upregulation including PGC-1α deacetylation or mitochondrial mRNA during treadmill running. CONCLUSIONS: These results suggest that increase of CaMKII activity regulates NO formation during muscle contraction via regulation of nNOS phosphorylation and plays pivotal role in mitochondria biogenesis.

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