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  • Title: Azoospermia in male dromedary: Clinical findings, testicular biopsy, serum follicle stimulating hormone and seminal biomarkers.
    Author: Derar DR, Ali A, Zeitoun MM, Al-Sobayil F.
    Journal: Anim Reprod Sci; 2018 Dec; 199():24-29. PubMed ID: 30340855.
    Abstract:
    Azoospermia is not an uncommon infertility problem in the male dromedary (Camelus dromedarius). Azoospermia was investigated via clinical findings, testicular biopsy as well as the evaluation of follicle stimulating hormone (FSH), concentration of camel testis protein (TEX101) and camel epididymis-specific extracellular matrix protein (ECM1) in seminal fluids. Azoospermic male camels (AZOO group, n = 28) that had been detected to be infertile as a result of lack of resulting pregnancies after repeated mating's for at least one season were included in this study. Clinical examination, semen analysis and testicular biopsy sampling were conducted for each individual animal. Blood samples were collected from the AZOO and from reference fertile males (FERT group, n = 8) for the assay of FSH hormone and semen biomarkers (TEX101 and ECM1). There were bilaterally normal-sized testes in 42.8%, bilaterally small-sized testes in 35.7%, bilaterally large-sized testes in 7.1%, no testicles in 7.1% and only one testicle in 7.1% of azoospermic animals. Sertoli cell-only syndrome (SCO) and maturation arrest were observed in 78.6% and 21.4% of the animals, respectively. There were greater concentrations of FSH in the AZOO group compared with the FERT group (P  = 0.01). In conclusion, azoospermia in dromedary camels is mainly associated with spermatogenic defects and greater serum FSH concentrations. Seminal biomarkers, therefore, might be feasible indicators for identifying azoospermia in the male dromedary camels and the condition of non-obstructive azoospermia was seemingly prevalent in the male dromedary camels in the present study.
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