Results 171 to 180 of about 3,213 (201)

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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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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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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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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Conventional Versus Microdissection Testicular Sperm Extraction for Nonobstructive Azoospermia

The Journal of Urology, 2002
We established a practical and safe strategy for testicular sperm extraction (TESE) in patients with nonobstructive azoospermia and compared conventional with microdissection TESE.In a retrospective comparative study 46 patients, including 22 with obstructive and 24 with nonobstructive azoospermia, underwent conventional TESE.
Hiroshi, Okada, Masaki, Dobashi, Takafumi, Yamazaki, Isao, Hara, Masato, Fujisawa, Soichi, Arakawa, Sadao, Kamidono   +6 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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Value of Testicular Biopsy in Nonobstructive Azoospermia

2017
One of the first problems that arise in the study of the azoospermic patient is to determine if he has a blockage of the spermatic ducts, obstructive azoospermia, or otherwise there is a primary failure in spermatogenesis, i.e., nonobstructive azoospermia (NOA). The testicular volume, FSH, and inhibin B may be normal in patients with NOA.
Manuel Nistal, Pilar González-Peramato, Álvaro Serrano   +2 more
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Nonobstructive azoospermia: a spectrum, not a single disease

Fertility and Sterility, 2021
Michael B, Tradewell, Thomas A, Masterson   +1 more
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The Argument for Varicocele Repair in Nonobstructive Azoospermia

2018
Nonobstructive azoospermia (NOA) is a severe form of male factor infertility that typically obligates couples to intracytoplasmic sperm injection (ICSI) with testicular sperm. A significant proportion of these men, however, will also present with a palpable varicocele—a known modifiable risk factor for subfertility.
Connor M. Forbes, Russell P. Hayden, Marc Goldstein   +2 more
openaire   +1 more source

Mutations of MSH5 in nonobstructive azoospermia (NOA) and rescued via in vivo gene editing

Signal Transduction and Targeted Therapy, 2022
Chencheng Yao, Yingying Qin, Zhiyong Ji
exaly