Abstract
To investigate the role of platelet-activating factor (PAF) in human ovulation, we studied the regulation of interleukin (IL)-8 and growth-regulated oncogene (GRO) alpha in cultured human immortalized granulosa cell line (GC1a). GC1a was cultured in serum-free medium, and incubated with carbamyl-PAF (C-PAF) and/or PAF receptor antagonist (WEB 2086). The supernatants were collected, and IL-8 and GRO alpha were measured by enzyme-linked immunosorbent assay. After treatment with C-PAF, the levels of IL-8 and GROalpha increased in a time-dependent manner. The levels of IL-8 and GROalpha were significantly increased after treatment with C-PAF in a dose-dependent manner. However, the levels of IL-8 and GROalpha were significantly decreased by treatment with C-PAF and with increasing concentrations of WEB 2086. Our data indicated that IL-8 and GROalpha were regulated by C-PAF. The results suggested that PAF may play an important role in human pre-ovulatory processes involving IL-8 and GROalpha production.
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