Results 151 to 160 of about 9,757 (189)

Sperm Acquisition in Nonobstructive Azoospermia: What Are the Options?

Urologic Clinics of North America, 2008
Approximately 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.
Stephanie E, Harris, Jay I, Sandlow
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Identification of ferroptotic genes and phenotypes in idiopathic nonobstructive azoospermia

Systems Biology in Reproductive Medicine, 2023
Effective treatments for nonobstructive azoospermia (NOA), which affects 1% of all men globally, are limited by undefined pathogenic mechanisms, especially in idiopathic NOA (iNOA). Here, we tried to identify the functional ferroptosis-related genes and phenotypes involved in iNOA.
Chen, Liao, Tian-Wen, Peng, Xiao-Min, Li, Zhi-Cong, Chen, Mu-Ye, Wang, Xin, Ye, Yu, Lan, Xin, Fu, Geng, An   +8 more
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What Is the Indication of Varicocelectomy in Men with Nonobstructive Azoospermia?

Urology, 2007
To 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.
Joong Shik, Lee, Heung Jae, Park, Ju Tae, Seo   +2 more
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STX2is a causative gene for nonobstructive azoospermia

Human Mutation, 2018
STX2 encodes a sulfoglycolipid transporter. Although Stx2 nullizygosity is known to cause spermatogenic failure in mice, STX2 mutations have not been identified in humans. Here, we performed STX2 mutation analysis for 131 Japanese men clinically diagnosed with nonobstructive azoospermia.
Shigeru Nakamura, Yoshitomo Kobori, Yoshihiko Ueda, Yoko Tanaka, Hiromichi Ishikawa, Atsumi Yoshida, Momori Katsumi, Kazuki Saito, Akie Nakamura, Tsutomu Ogata, Hiroshi Okada, Hideo Nakai, Mami Miyado, Maki Fukami   +13 more
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Management of nonobstructive azoospermia: a committee opinion

Fertility and Sterility, 2018
The 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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Preliminary investigation of the function of hsa_circ_0049356 in nonobstructive azoospermia patients

Andrologia, 2020
Nonobstructive azoospermia (NOA), which is considered the most severe form of male infertility, has placed a heavy burden on families and society. As vital regulators of transcriptional and post-transcriptional levels, Noncoding RNAs (ncRNAs) are closely related to all the pathophysiological processes involved in infertility in males, especially ...
Lin Liu, Faminzi Li, Zhen Wen, Tao Li, Meng Lv, Xiaodong Zhao, Wei Zhang, Jing Liu, Liyan Wang, Xiaoling Ma   +9 more
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Nonobstructive Azoospermia: A Revolutionary Surgical Approach and Results

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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Diffusion tensor imaging parameters in testes with nonobstructive azoospermia

Journal of Magnetic Resonance Imaging, 2018
BackgroundThe 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 ...
Athina C, Tsili, Alexandra, Ntorkou, Anna, Goussia, Loukas, Astrakas, Eleni, Panopoulou, Nikolaos, Sofikitis, Maria I, Argyropoulou   +6 more
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A rational approach to the management of varicocele-associated nonobstructive azoospermia

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, Saleh, Ashok, Agarwal, Hosam, Farouk   +2 more
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Spermatogonial proliferation and apoptosis in hypospermatogenesis associated with nonobstructive azoospermia

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
S, Takagi, N, Itoh, M, Kimura, T, Sasao, T, Tsukamoto   +4 more
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