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  • Title: Intrauterine insemination. Effect of wash media on pregnancy rates and sperm motility.
    Author: Rhoton AS, Williams RS, Dattilo M, Konicek J, Fossum GT.
    Journal: J Reprod Med; 1993 Sep; 38(9):711-5. PubMed ID: 8254594.
    Abstract:
    Testyolk Buffer has been shown to enhance sperm penetration in hamster penetration assays and increase fertilization of oocytes in in vitro fertilization. Based on these findings, we compared pregnancy rates and sperm motility in intrauterine inseminations done with sperm samples washed and resuspended in Ham's F10 as compared with Testyolk buffer. Charts were reviewed retrospectively from 1,098 husband and donor intrauterine inseminations performed at the University of Florida. Data were analyzed using life table analysis and the curves compared with the Mantel-Haenszel statistical test. In addition, sperm motility in fresh sperm was observed in samples incubated in Testyolk or Ham's F10, with motility counts performed at 0, 6 and 24 hours. Four hundred ninety-two Testyolk cycles and 579 Ham's F10 cycles were compared, with cumulative pregnancy rates at one year of 53% and 44%, respectively (P = .58). With donor sperm, 229 cycles with Testyolk and 314 cycles with Ham's F10 had cumulative pregnancy rates of 68% and 48%, respectively (P = .52). With husband insemination, 264 Testyolk and 253 Ham's F10 cycles had pregnancy rates of 37% and 35%, respectively (P = .23). Fresh sperm motility in 22 samples compared at 0, 6 and 24 hours in Ham's F10 (76%, 67.8%, 56.6%) versus Testyolk (76%, 67.7%, 58.8%) revealed no significant differences. There was also no difference in total motile sperm inseminated and postwash motility in 1,098 samples with Testyolk versus Ham's F10. This study demonstrates that there is no enhanced pregnancy rate or increased sperm motility when sperm are treated with Testyolk Buffer instead of Ham's F10.
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