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- W1520486520 abstract "Total enolase as well as enolase-alphaalpha. (ENO-alphaalpha, ubiquitous) and enolase-S (ENO-S, sperm-specific) activities were measured in total and Percoll-selected sperm from 30 normospermic fertile men and 20 abnormospermic infertile patients. The total enolase activity was significantly higher in total sperm from patients with abnormospermia compared with normospermic patients (11.1 +/- 1.9 vs. 4.8 +/- 0.5 mlU/10(7) sperm P < .05). ENO-alphaalpha activity was significantly higher in total sperm from abnormospermic men than from normospermic men (P < .05). ENO-alphaalpha activity in Percoll-selected sperm was significantly lower compared with total sperm in both group of patients; however, for the same sperm fraction ENO-alphaalpha activity did not differ between normospermic and abnormospermic men. ENO-alphaalpha activity was related to the cell contamination ratio and to the percentage of spermatozoa with abnormal morphology. Furthermore, ENO-alphaalpha was positively correlated with the percentage of immature sperm showing an excess of residual cytoplasm. ENO-S activity was significantly higher in total sperm from normospermic patients than from abnormospermic patients (P < .05). ENO-S activity in Percoll-selected sperm was not significantly different compared with total sperm in both group of patients. However, this activity was significantly lower in Percoll-selected sperm from abnormospermic men compared with normospermic men (P < .05). ENO-S activity was not related to the cell contamination ratio but was significantly correlated with the percentage of spermatozoa with normal morphology. The 2 enolase isoforms seem to reflect 2 opposite aspects of sperm cells quality: ENO-alphaalpha is associated with abnormal spermatozoa, immature spermatozoa, or both; and ENO-S is associated with normal spermatozoa. As an additional index to distinguish normal from abnormal semen, the ENO-S:ENO-alphaalpha ratio was evaluated for total and Percoll-selected sperm in both groups. This ratio seems to be a new, valuable marker of the global sperm quality in a given semen sample, and may represent a predictive index of sperm fertilizing potential." @default.
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- W1520486520 date "2002-03-01" @default.
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- W1520486520 title "Enolase isoforms activities in spermatozoa from men with normospermia and abnormospermia." @default.
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