These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Protection from apoptotic cell death by cilostazol, phosphodiesterase type III inhibitor, via cAMP-dependent protein kinase activation.
    Author: Kim MJ, Lee JH, Park SY, Hong KW, Kim CD, Kim KY, Lee WS.
    Journal: Pharmacol Res; 2006 Oct; 54(4):261-7. PubMed ID: 16822680.
    Abstract:
    This study aimed to elucidate whether the effect of cilostazol to suppress apoptotic cell death is directly coupled to cAMP-dependent protein kinase activation in human umbilical vein endothelial cells (HUVECs). After exposure of HUVECs to LPS (1 microgml(-1)) for 18 h, the endothelial cells irregularly aggregated with loss of cobblestone appearance, which was reversed by cilostazol (1-100 microM), as well as by cilostamide (cilostazol analog), and cilostazol metabolites (OPC-13015 and OPC-31213), respectively. LPS-stimulated production of reactive oxygen species (ROS) was significantly reduced by cilostazol (0.1-10 microM). In line with these, LPS (1 microgml(-1))- and TNF-alpha (200 ngml(-1))-induced DNA fragmentation, assessed by agarose gel electrophoresis, was significantly reduced by treatment with cilostazol (10 microM) as well as by dibutyryl cAMP (100 microM). This effect was reversed by cAMP-dependent protein kinase inhibitor, Rp-cAMPs (200 microM). Further, LPS (1 microgml(-1))-induced decrease in Bcl-2 and increase in Bax protein expression were fully reversed by cilostazol (10 microM) and dibutyryl cAMP (100 microM), all of which were antagonized by Rp-cAMPs (200 microM). Taken together, cilostazol effectively protected HUVECs from LPS- and TNF-alpha-induced cell death associated with oligonucleosomal DNA fragmentation via activation of cAMP-dependent protein kinase.
    [Abstract] [Full Text] [Related] [New Search]