Journal of Microbiology and Biotechnology

  • 제18권2호
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  • Pages.392-395
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  • 2008
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  • 1017-7825(pISSN)
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  • 1738-8872(eISSN)
한국미생물·생명공학회 (The Korean Society for Microbiology and Biotechnology)
권호 표지

Regulation of NO from Endothelial Cells by the Decrease of Cellular cAMP Under Arsenite Exposure

  • Lee, Soo-Youn (Division of Environmental and Chemical Engineering, Chonbuk National University) ;
  • Min, Ji-Ho (Division of Environmental and Chemical Engineering, Chonbuk National University)
  • 발행 : 2008.02.29
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초록

In an attempt to delineate the direct effect of arsenite-induced endothelial dysfunction on nitric oxide (NO) production, confluent bovine aortic endothelial cells (BAEC) were incubated with arsenite, and endothelial NO synthase expression and NO production were measured. Exposure of arsenite decreased NO production for up to 24h. This decrease was accompanied by decreases in cAMP, protein kinase A (PKA) activity, and furthermore, significant reduction of pCREB. In conclusion, this study is the first to demonstrate that exposure of arsenite decreases NO production by a reduction of pCREB and PKA activity that may be mediated by cAMP, leading to endothelial dysfunction.

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