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Biology of Reproduction, Vol 36, 628-635, Copyright © 1987 by Society for the Study of Reproduction

ARTICLES

Plasma sex steroid binding in Chiroptera

GG Kwiecinski, DA Damassa, AW Gustafson and ME Armao

Plasma steroid binding was examined in samples obtained from seven species of bats representing four different families. A specific sex steroid-binding protein (SBP) was identified by steady-state polyacrylamide gel electrophoresis in representatives of two families, the phyllostomids and the vespertilionids. In these species, as in primates, SBP not only exhibited high affinity for the androgens testosterone and dihydrotestosterone (DHT), but also for estradiol. A specific SBP was not identified in the tropical American vampire bat or in the two species of pteropodids examined. In all species examined, except for the vampire bat, a specific corticosteroid-binding globulin (CBG) was also identified. In addition to binding glucocorticoids, CBG in these species appeared to bind androgens as well.




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Copyright © 1987 by the Society for the Study of Reproduction.