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Related Experiment Videos

Catecholamine requirement for hamster sperm motility in vitro.

B D Bavister, A F Chen, P C Fu

    Journal of Reproduction and Fertility
    |July 1, 1979
    PubMed
    Summary

    Adrenal glands contain a sperm motility factor (SMF) that requires catecholamines as essential co-factors. These findings demonstrate that hamster sperm need catecholamines for motility in vitro.

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    Area of Science:

    • Reproductive Biology
    • Endocrinology
    • Biochemistry

    Background:

    • Adrenal gland homogenates contain a sperm motility factor (SMF).
    • SMF stimulates hamster epididymal sperm motility in vitro.
    • The precise nature and co-factors of SMF were not fully elucidated.

    Purpose of the Study:

    • To identify the essential co-factors for sperm motility factor (SMF).
    • To investigate the role of catecholamines in sperm motility.
    • To characterize the adrenergic receptor involvement in SMF activity.

    Main Methods:

    • Gel filtration chromatography (Sephadex G-10) of adrenal gland homogenates.
    • In vitro assessment of hamster sperm motility.
    • Addition of purified fractions and catecholamines to SMF preparations.
    • Pharmacological characterization using adrenergic agonists and antagonists.

    Main Results:

    • Gel filtration attenuated SMF activity, with co-factors eluting separately.
    • Activity was restored by adding 'retarded' fractions or catecholamines (epinephrine, norepinephrine).
    • Catecholamines potentiated SMF activity via alpha-adrenergic receptors, not beta-adrenergic receptors.

    Conclusions:

    • Catecholamines are essential co-factors for SMF.
    • Hamster spermatozoa require catecholamines for in vitro motility.
    • SMF activity is mediated through alpha-adrenergic pathways.

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