Biol Reprod Keystone Symposia Conference on Frontiers in Reproductive Biology & Regulation of Fertility.
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Biology of Reproduction, Vol 14, 219-221, Copyright © 1976 by Society for the Study of Reproduction

Capacitation of Hamster Spermatozoa With Adrenal Gland Extracts

BARRY D. BAVISTER 1, RYUZO YANAGIMACHI 1, , and ROBERT J. TEICHMAN 1

1 Department of Anatomy and Reproductive Biology, John A. Burns School of Medicine, Honolulu, Hawaii 96822


The hamster adrenal gland was found to be a new and very potent source of "sperm motility factor" (SMF); the activity of SMF in adrenal extracts was approximately 100 to 200 times that in hamster blood serum. Hamster epididymal spermatozoa incubated with adrenal extracts became capacitated. as shown by their ability to fertilize cumulus-free eggs. Like the SMF in human blood serum, the hamster adrenal SMF has a low molecular weight (about 100 to 200) and is heat-stable.

Note:
ACKNOWLEDGMENTS One of us (B.D.B.) was supported by Research Fellowships from the Population Council and the Ford Foundation, and the work was also supported by grants from the Population Council and the United States Public Health Service (HD-03402).

Submitted on August 28, 1975
Accepted on October 28, 1975




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