Results 201 to 210 of about 3,343 (219)
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Gene Alterations and Expression Spectrum of NANOS3 in Nonobstructive Azoospermia
Reproductive Sciences, 2021Nanos3, a zinc finger RNA-binding protein, suppresses the apoptosis in primordial germ cells (PGCs) during migration to gonads and maintains the PGC population. The genetic variations and expression of NANOS3 in patients with non-obstructive azoospermia (NOA) were evaluated in this study. The study included 100 idiopathic infertile men with NOA and 100
Hamideh Karimi +3 more
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Nonobstructive Azoospermia: A Revolutionary Surgical Approach and Results [PDF]
Seminars in Reproductive Medicine, 2009 The treatment of nonobstructive azoospermia was developed and has evolved rapidly over the past decade. Extraction of spermatozoa from the limited sites of sperm production in the testes of men with nonobstructive azoospermia has been a primary challenge to the successful treatment of these patients.
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A rational approach to the management of varicocele-associated nonobstructive azoospermia [PDF]
Fertility and Sterility, 2011 A consensus needs to be reached on a rational approach to infertile men with varicocele-associated nonobstructive azoospermia. Future studies are warranted to understand the mechanism behind the variable influence of varicocele on testicular function, which causes partial or complete damage of spermatogenesis in some cases and leaves it unaltered in ...
Ramadan A Saleh +2 more
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Anti-inflammatory and varicocele treatment in nonobstructive azoospermia
Andrologia, 2003A 34-year-old male patient with nonobstructive azoospermia and childlessness for more than 2 years is presented. As even severely damaged testes often harbour cryptic areas with remaining spermatogenesis, such cases might be suitable for spermatid extraction from bilateral testicular biopsies.
Thomas Ruzicka +5 more
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What Is the Indication of Varicocelectomy in Men with Nonobstructive Azoospermia?
Urology, 2007To investigate the effect of microsurgical varicocelectomy in nonobstructive azoospermic patients. The surgical outcomes were correlated with the histopathologic patterns of testicular specimens.A total of 19 nonobstructive azoospermic men who underwent testicular biopsy and varicocelectomy were included in the study.
Heung Jae Park +2 more
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Sperm Acquisition in Nonobstructive Azoospermia: What Are the Options?
Urologic Clinics of North America, 2008Approximately 10% of male-factor infertility is caused by azoospermia, and nearly two thirds of these patients have nonobstructive azoospermia (NOA). As experience has been gained, increasing numbers of men who have NOA are having sperm retrieved from their testes and used for intracytoplasmic sperm injection with vitro fertilization.
Jay I. Sandlow, Stephanie E. Harris
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Management of nonobstructive azoospermia: a committee opinion
Fertility and Sterility, 2018The management of nonobstructive azoospermia in the context of fertility treatment is discussed. This document replaces the ASRM document titled "Evaluation of azoospermia," last published in 2008.
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Fertility and Sterility, 2001
To provide evidence that a pathological process in spermatogonial proliferation and apoptosis may participate in developing hypospermatogenesis of infertile men.Case-controlled retrospective analysis.University-based male infertility clinic.Thirty-four patients with idiopathic hypospermatogenesis.Collecting blood samples for measurement of hormones and
Seiji Takagi +4 more
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To provide evidence that a pathological process in spermatogonial proliferation and apoptosis may participate in developing hypospermatogenesis of infertile men.Case-controlled retrospective analysis.University-based male infertility clinic.Thirty-four patients with idiopathic hypospermatogenesis.Collecting blood samples for measurement of hormones and
Seiji Takagi +4 more
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Diffusion tensor imaging parameters in testes with nonobstructive azoospermia
Journal of Magnetic Resonance Imaging, 2018BackgroundThe development of noninvasive imaging parameters having the capacity to identify the population of men with nonobstructive azoospermia (NOA) where a successful sperm retrieval outcome is of great clinical significance.Purpose/HypothesisTo assess differences of apparent diffusion coefficient (ADC) and fractional anisotropy (FA) in NOA testes ...
Maria I. Argyropoulou +6 more
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Abnormal progression through meiosis in men with nonobstructive azoospermia
Fertility and Sterility, 2007To study meiotic abnormalities in men with nonobstructive azoospermia.Analysis of synaptonemal complex and recombination in testicular tissue.Research laboratory.Twenty-nine men with nonobstructive azoospermia and 12 men with normal spermatogenesis.Testicular tissues were processed with immunofluorescent staining using antibodies against proteins ...
Calvin Greene +7 more
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