Abstract |
To investigate the fertility of men who remain oligozoospermic despite sex steroid suppression, the in-vitro fertilizing capacity of residual spermatozoa was assessed in 30 men receiving intramuscular testosterone enanthate (TE). Spermatozoa were prepared by either Percoll or repetitive centrifugation/washing. Although the mean (+/- SEM) pretreatment zona-free hamster oocyte penetration (HOP) rates were similar (59.4 +/- 10.1 and 63.8 +/- 10.8%), following the induction of oligozoospermia the Percoll-prepared spermatozoa exhibited a penetration rate (26.9 +/- 10.2%) which was markedly greater than that obtained for sperm prepared by repetitive washing (0 +/- 0%). In addition, the partners of two men exhibiting a HOP test with Percoll-prepared spermatozoa, conceived despite a sperm concentration of 3 x 10(6) ml-1 and a negative HOP test with spermatozoa prepared by repetitive washing. These results suggest that Percoll preparation optimizes the assessment of in-vitro sperm function and that the fertility of men with TE-induced severe oligozoospermia is suppressed but not abolished.
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Authors | E M Wallace, R J Aitken, F C Wu |
Journal | International journal of andrology
(Int J Androl)
Vol. 15
Issue 5
Pg. 416-24
(Oct 1992)
ISSN: 0105-6263 [Print] England |
PMID | 1428200
(Publication Type: Clinical Trial, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Contraceptive Agents, Male
- Testosterone
- testosterone enanthate
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Topics |
- Adult
- Animals
- Contraceptive Agents, Male
(pharmacology)
- Cricetinae
- Female
- Fertility
(drug effects)
- Humans
- Male
- Pregnancy
- Sperm-Ovum Interactions
- Spermatozoa
(drug effects, physiology)
- Testosterone
(analogs & derivatives, pharmacology)
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