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تصفح المحتوي RDA
التصفح حسب الموضوعات
التصفح حسب اللغة
التصفح حسب الناشر
التصفح حسب تاريخ النشر
التصفح حسب مكان النشر
التصفح حسب المؤلفين
تصفح الهيئات
التصفح المؤتمرات
التصفح حسب نوع المادة
التصفح حسب العلاقة بالعمل
تم العثور علي : 4
 تم العثور علي : 4
  
 
إعادة البحث

Thesis 2015.

Thesis 2014.
Infertility is a common condition; theratio of couples seeking medical treatment for infertilityis estimated at 4–17%. This problem due to male factor found in 20% of infertile couples and found in 26%in both couples.(1) Proposed causes of infertilityin men include varicocele - obstruction of the spermatic ducts - agglutination of sperms - high semen viscosity - necrospermia - low volume of ejaculate and ejaculatory dysfunction. (2)
Measurement of testosterone hormone
- LH (luteinizing hormone) - and FSH (follicle stimulating hormone) will determinewhether patient has hypogonadotropic hypogonadism (lowtestosterone - low LH and FSH) - primary testicularfailure (low testosterone - elevated LHandFSH) - selective spermatogenicfailure (normal testosterone - normalLH - and elevated FSH) - or androgenresistance (high testosterone - elevated LH). A majority of infertilemen have normal testosterone - LH - and FSH levels. (3)
Geidam et al. conducted an observational
- retrospective study in Nigeria aimed to determine the prevalence of endocrinological abnormalities in patients investigated for male infertility which was 7.3%. They concluded that hormonal assessments should be performed in the evaluation of male infertility.(4)
Normal testosterone
- normal LH - and elevated FSH levels (≥20 MIU/ml) in an azoospermic or severely oligozoospermic manare suggestive ofprimary spermatogenic failure. (5) These menshouldundergo measurementof testicular volume - karyotyping and screeningfor Y-chromosome micro-deletions. (1)
Karyotypinganalysis of men with Y-chromosome translocationshas revealed a region on the long (q) arm of the Y chromosomethat is required for spermatogenesis. This region includesthe azoospermia factor (AZF) locus
- which contains a gene orgenes that are required for normal spermatogenesis. (6) - Infertility - Oligospermia - Urology

Articles
Vol. 17, no. 2 (May 2000), p. 149-158 /
   

Thesis 1994.

 







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