RESUMO
OBJECTIVE: We performed this study to evaluate the effects of Sil-Select and Percoll in sperm preparation. METHODS: Semen samples of 22 patients with normal sperm parameters by WHO criteria were divided into two equal parts and prepared with Percoll and Sil-Select. After completion of semen preparation procedures with Percoll and Sil-Select, sperm concentration, motility and morphology using strict criteria were evaluated in each group and all semen samples were fixed and stained for transmission electron microscopy(TEM). RESULTS: There were no significant diffrences in sperm concentration, percentage of motile spermatozoa and percentage of normal spermatozoa in morphology evaluation using strict criteria under light microscopy between Percoll and Sil-Select-treated groups. However, the percentage of normal shape and position of acrosome, and normal helix assembly of mitochondria under TEM were significantly higher in the Sil-Select-treated group compared to Percoll-treated group (p < 0.001, p < 0.001, p < 0.001). CONCLUSIONS: These data demonstrate that Sil-Select is less detrimental to the acrosome and mitochondria of spermatozoa in sperm preparation compared to Percoll.
