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Effect of preservation of human semen sample at 4-6 and 25 °C on sperm motility.
Cell and Tissue Banking 2018 December
Sperm motility is the result of transverse movements that exist along its tail. It plays an important role in male fertility. The aim of this study was to evaluate the influence of keeping washed normozoospermic semen samples at 4-6 and 25 °C on the motility of spermatozoa. 26 semen samples of normozoospermic were washed twice in modified Ham's F10 medium. Then, thirteen of the semen samples were kept in refrigerator (4-6 °C) and the remaining samples were stored in incubator (25 °C) for 12 days. On the 0 (immediately after sampling as control group), 1st, 2nd, 5th, 7th and the 12th days, the percentage of fast progressive (grade a), slow progressive (grade b), non-progressive (grade c) and immotile (grade d) sperm cells were calculated for each temperature. The data obtained from this study showed that the percentages of a, b and c grades of motile spermatozoa were significantly decreased (p < 0.001) during 12 days at the both temperatures but reduction of these percentages has a gentle slope at 4-6 °C. There was no motile sperm after 12 days of storage. This study suggests that motile spermatozoa could be retrieved up to 7 days after the storage of washed normozoospermic men semen samples at 4-6 and 25 °C. Also, there were no motile sperm cells 12 days after sampling.
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