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- W2097153001 abstract "ObjectiveTo study the pathogenesis of male infertility in cystinosis due to nonobstructive azoospermia, using a Ctns−/− mouse model.DesignObservational case-control study.SettingAcademic research laboratory.Animal(s)Male C57BL/6 Ctns−/− mice were compared with C57BL/6 wild-type (wt) mice.Intervention(s)None.Main Outcome Measure(s)Fertility was studied using litter size (n = 3 vs. n = 2). After animals were sacrificed, testes, epididymis, and vas deferens were removed for testicular cystine measurements (n = 5 vs. n = 6), histologic studies (n = 3 vs. n = 3), and sperm analysis (n = 3 vs. n = 3).Result(s)Mean testicular cystine content was significantly higher in Ctns−/− mice compared with wt mice (26.6 ± 1.22 vs. 0.1 ± 0.01 nmol cystine/mg protein). Testes of Ctns−/− mice had lower weight compared with wt mice (0.096 ± 0.009 g vs. 0.112 ± 0.004 g), but mice fertility was similar (litter size 6.6 ± 1.4 vs. 6.3 ± 2.6 pups). Neither histologic nor sperm abnormalities were found.Conclusion(s)The Ctns−/− mouse model generated on C57BL/6 background is not suitable for clarifying the pathogenesis of male infertility in cystinosis. The etiology of nonobstructive azoospermia in these patients remains unclear. To study the pathogenesis of male infertility in cystinosis due to nonobstructive azoospermia, using a Ctns−/− mouse model. Observational case-control study. Academic research laboratory. Male C57BL/6 Ctns−/− mice were compared with C57BL/6 wild-type (wt) mice. None. Fertility was studied using litter size (n = 3 vs. n = 2). After animals were sacrificed, testes, epididymis, and vas deferens were removed for testicular cystine measurements (n = 5 vs. n = 6), histologic studies (n = 3 vs. n = 3), and sperm analysis (n = 3 vs. n = 3). Mean testicular cystine content was significantly higher in Ctns−/− mice compared with wt mice (26.6 ± 1.22 vs. 0.1 ± 0.01 nmol cystine/mg protein). Testes of Ctns−/− mice had lower weight compared with wt mice (0.096 ± 0.009 g vs. 0.112 ± 0.004 g), but mice fertility was similar (litter size 6.6 ± 1.4 vs. 6.3 ± 2.6 pups). Neither histologic nor sperm abnormalities were found. The Ctns−/− mouse model generated on C57BL/6 background is not suitable for clarifying the pathogenesis of male infertility in cystinosis. The etiology of nonobstructive azoospermia in these patients remains unclear." @default.
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- W2097153001 date "2012-07-01" @default.
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- W2097153001 title "Studying nonobstructive azoospermia in cystinosis: histologic examination of testes and epididymis and sperm analysis in a Ctns−/− mouse model" @default.
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- W2097153001 doi "https://doi.org/10.1016/j.fertnstert.2012.03.050" @default.
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