THE RELEASE OF HYALURONIDASE FROM GUINEA-PIG SPERMATOZOA DURING THE COURSE OF THE NORMAL ACROSOME REACTION IN VITRO

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Authors:
PRUDENCE TALBOT
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and
L. E. FRANKLIN
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DOI:
https://doi.org/10.1530/jrf.0.0390429
Volume/Issue:
Volume 39: Issue 2
Page Range:
429–432
Article Type:
Research Article
Online Publication Date:
Aug 1974
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Hamster spermatozoa incubated in heat-pretreated blood serum release 55 to 60% of their total hyaluronidase activity by the end of 1 hr of incubation; little increase in activity is found in the incubation medium at later time intervals up to 4 hr (Rogers & Morton, 1973; Talbot & Franklin, 1974b). This release occurs well before and independently of a normal acrosome reaction, i.e. detachment of the acrosome from motile spermatozoa as observed with phase-contrast microscopy (Talbot & Franklin, 1974b). Vesiculation between the outer acrosomal membrane and plasma membrane does not occur before the surge of hyaluronidase release which takes place between time zero and 1 hr of incubation (Talbot & Franklin, 1974b).

Lewis & Ketchel (1972a, 1973) demonstrated that the release of hyaluronidase from rabbit spermatozoa incubated in postovulatory uterine fluid is "related to the completion

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Print ISSN:
1470-1626
Online ISSN:
1741-7899