Forced overexpression of cyclooxygenase-2 (COX-2) in intestinal cells has been shown to be associated with resistance to apoptosis. However, the role of physiologically-induced COX-2 in the regulation of apoptosis remains unclear. In the present study, we examined whether hepatocyte growth
The Journal of reproduction and development, 50(6), 667-674 (2005-01-14)
Mammalian spermatozoa must undergo acrosomal exocytosis prior to penetration of the oocyte at fertilization. The mechanisms underlying acrosomal exocytosis have not yet been fully elucidated. This study explored the possible involvement of ceramide in exocytosis of the boar sperm acrosome.
The Journal of biological chemistry, 275(18), 13275-13281 (2000-05-02)
Synthesis of 6(R)-5,6,7,8-tetrahydrobiopterin (BH(4)), a required cofactor for inducible nitric-oxide synthase (iNOS) activity, is usually coordinately regulated with iNOS expression. In C6 glioma cells, tumor necrosis factor-alpha (TNF-alpha) concomitantly potentiated the stimulation of nitric oxide (NO) and BH(4) production induced
The activation of ceramide-generating enzymes, the blockade of ceramide degradation, or the addition of ceramide analogues can trigger apoptosis or necrosis in human cancer cells. Moreover, endogenous ceramide plays a decisive role in the killing of neoplastic cells by conventional
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