In vitro inhibition of celastrol on spermatozoa fertilization ability of guinea pig
1995
The effects of celastrol(Cel),isolated from
Tripterygium wilfordii,on guinea pigsperm forward
motility(FM),capacitation(Cap),the acrosome reaction(AR)and
spermpenetration assay(SPA)were assessed in vitro.Cel(5 μg·
ml-1)was found to inhibit thesespermatozoal functions,and the
inhibitions were proportional to the concentrations of Cel
used.Thepotency of inhibition of Cel on the fertilizing ability in
guinea pig spermatozoa in vitro seems to followthe order
:CapFMSPAAR.The inhibitory effect appeared to be reversible after
washing awayCel if the duration of exposure of spermatozoa to Cel was
shorter than 3 h. In a comparative study,the inhibitory effects of
Cel on guinea pig sperm FM and AR were significantly stronger than
those ofgossypol acetic acid.
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