Effect of caffeine and kallikrein on cryo-preserved human spermatozoa.
Int J Fertil
; 24(1): 27-32, 1979.
Article
en En
| MEDLINE
| ID: mdl-37176
ABSTRACT
Preservation of human semen in liquid nitrogen causes a significant impairment of sperm motility. Ejaculated human spermatozoa show an increased motility in the presence of caffeine, a phosphodiesterase inhibitor, and pancreatic kallikrein (EC 3.4.21.8), a kinin-producing proteinase. Hence, the effect of both substances on post-thaw motility, fructose consumption, and cervical mucus penetration of cryo-preserved human spermatozoa was investigated. The results indicate that both substances stimulate the motility of freshly ejaculated spermatozoa and also improve the motility pattern of cryo-preserved human spermatozoa, thus offering a possible means of improving the quality of freeze-preserved human semen.
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Banco de datos:
MEDLINE
Asunto principal:
Preservación de Semen
/
Espermatozoides
/
Cafeína
/
Calicreínas
Límite:
Humans
/
Male
Idioma:
En
Año:
1979
Tipo del documento:
Article