1991
DOI: 10.1042/bj2780025
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Role of spermine in mammalian sperm capacitation and acrosome reaction

Abstract: The binding properties of seminal polyamines to ram spermatozoa and their possible role in sperm capacitation and the acrosome reaction were studied. Binding and release of [14C]spermine from ram spermatozoa occurred at a rate faster than in somatic cells and were not energy-dependent. Release of bound spermine was further facilitated by heparin, a constituent of the female reproductive tract which was reported to induce capacitation and the acrosome reaction. High- and low-affinity polyamine-binding sites wer… Show more

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Cited by 42 publications
(29 citation statements)
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“…Polyamines (putrescine, spermidine, and spermine) are arginine degradation products and are small cationic molecules with proliferative effects, required to regulate cell growth and inflammation and homeostasis. Lower spermine levels are associated with defects in the neck and body of sperm cells (midpiece defects) (Rubinstein & Breitbart, ). The supplementation of polyamine cursor of S‐adenosylmethionine was shown to increase sperm motility in patients with oligozoospermia (Vanella et al ., ).…”
Section: Discussionmentioning
confidence: 97%
“…Polyamines (putrescine, spermidine, and spermine) are arginine degradation products and are small cationic molecules with proliferative effects, required to regulate cell growth and inflammation and homeostasis. Lower spermine levels are associated with defects in the neck and body of sperm cells (midpiece defects) (Rubinstein & Breitbart, ). The supplementation of polyamine cursor of S‐adenosylmethionine was shown to increase sperm motility in patients with oligozoospermia (Vanella et al ., ).…”
Section: Discussionmentioning
confidence: 97%
“…Spermidine/spermine N1-acetyl transferase was implicated in spermine metabolism by catalysing the acetylation of spermidine and spermine (Della Ragione et al, 1983). It has been reported that spermine can inhibit the acrosome reaction, thereby preventing premature capacitation (Rubinstein and Breitbart, 1991), but its role in uterus has not been reported before. In the present study, the upregulation of spermidine/spermine N1-acetyl transferase expression at oestrus may adjust the ratio of acetylized spermine in the uterine cavity, thereby exerting a regulatory effect on sperm state.…”
Section: Discussionmentioning
confidence: 99%
“…Spermine is present in seminal plasma in millimolar concentrations. Rubinstein and Breitbart have reported that at this concentration it inhibits the Ca'+-induced acrosomal reaction in vitro [44], possibly by blocking phosphoiipase C hydrolysis of phosphinositide. We have recently re-examined the effects of spermine on the acrosomal reaction and found that, at micromolar concentrations, spermine induces the acrosomal reaction in a Ca'+-independent manner (our unpublished results).…”
Section: Fees Leltersmentioning
confidence: 99%