نتایج جستجو برای: nonobstructive azoospermic noa azoospermic patients
تعداد نتایج: 2086236 فیلتر نتایج به سال:
Y chromosome deletions encompassing the AZFc region have been reported in 13% of azoospermic men and 7% of severely oligozoospermic men. We examined the impact of these Y deletions on the severity of testicular defects in 51 azoospermic men undergoing intracytoplasmic sperm injection (ICSI) after testicular sperm extraction (TESE) and 30 men with severe oligozoospermia undergoing ICSI after eja...
STUDY QUESTION Are there differences in the morphology, spectrum and biochemical phenotype between Sertoli cells from non-obstructive azoospermia (NOA) patients and those from obstructive azoospermia (OA) patients with normal spermatogenesis? SUMMARY ANSWER Sertoli cells from NOA patients are distinct from those from OA patients in terms of morphological features, Raman spectrum and phenotype...
BACKGROUND Patients with varicocele comprise 15% of males in general population. Varicocele is considered the most cost-effectively treatable cause of male infertility. We introduce a modification in technique of subinguinal varicocelectomy and review the outcome of 58 patients from July 2000 to July 2002. METHODS Four out of the 58 cases had both pain and infertility. For the 31 infertility ...
Background Although aberrant protamine (PRM) ratios have been observed in infertile men, the mechanisms that implicit the uncoupling of PRM1 and PRM2 expression remain unclear. To uncover these mechanisms, in this observational study we have compared the PRM1/PRM2 mRNA ratio and mRNA contents of two regulatory factors of these genes. MaterialsAndMethods In this experimental study, sampling was ...
OBJECTIVE To determine the prevalence of chromosomal abnormalities and microdeletions on Y chromosome in infertile patients with oligozoospermia or azoospermia in Mato Grosso state, Brazil. METHODS This cross-sectional study enrolled 94 men from infertile couples. Karyotype analysis was performed by lymphocyte culture technique. DNA from each sample was extracted using non-enzymatic method. M...
BACKGROUND In some cases infertile men showed small deletions of specific genes in the Y chromosome. It had been confirmed, these deleted genes are greatly associated with spermatogenic failure. However, the frequency and the patterns of such microdeletions among infertile men are not clearly clarified. OBJECTIVE We sought to determine the frequency and the patterns of Y chromosome microdelet...
Objectives: This study was conducted to evaluate the histological findings from testicular biopsies in azoospermic men seen at the Lagos State University Teaching Hospital, Ikeja Lagos, Nigeria. Patients and Methods: A retrospective study of testicular biopsies of azoospermic men who presented to our institution from 2005 to 2006 was performed. The patient’s age, type of infertility and histopa...
Genetic factors cause about 10% of male infertility. Azoospermia factors (AZFa, AZFb, AZFc) are considered to be the most important for spermatogenesis. We therefore made an attempt to evaluate the genetic cause of azoospermia, Y chromosome deletion in particular, in Indian men. We have analyzed a total of 570 men, including 340 azoospermic men and 230 normal control subjects. DNA samples were ...
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