Results 31 to 40 of about 6,194 (199)
São Paulo Medical Journal, 2022 BACKGROUND: Knowledge of clinical and laboratory differences between chromosomal and undefined causes aids etiological research on non-obstructive azoospermia.
Luísa Riccetto +9 more
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ThePGAM4gene in non-obstructive azoospermia [PDF]
Systems Biology in Reproductive Medicine, 2013 Non-obstructive azoospermia (NOA) is considered to be a severe infertility factor due to impaired spermatogenesis with the consequent absence of spermatozoa in the ejaculate. However, the underlying etiology and mechanism(s) remain elusive. The aim of this study was to investigate the mutation and association of single nucleotide polymorphisms (SNPs ...
Qi, Jin +9 more
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First reported deliveries in Ireland using surgically retrieved sperm for non-obstructive azoospermia [PDF]
, 2010 Couples presenting with male factor infertility comprise an important proportion of clinical reproductive endocrinology consultations. Indeed, a problem with the male is the only cause, or a contributing cause, of infertility in ~40% of infertility ...
Yokota, T.T. +11 more
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Proposed age-stratified reference intervals of FSH derived from normozoospermic men
Asian Pacific Journal of Reproduction, 2021 Objective: To demonstrate that serum follicle-stimulating hormone (FSH) in men rises with age, and to explore FSH reference intervals of age-related partitioning.
Emily-Jane Waller +3 more
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Nature Communications, 2020 Non-obstructive azoospermia affects 1% of men. Here, authors perform single-cell transcriptomic analysis of human testicular cells from healthy donors and non-obstructive azoospermia patients and find that inhibition of Wnt signaling promotes the ...
LiangYu Zhao +19 more
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Altered microRNA expression in patients with non-obstructive azoospermia [PDF]
Reproductive Biology and Endocrinology, 2009 Abstract Background MicroRNAs (miRNAs), a class of small non-coding RNA molecules, are indicated to play essential roles in spermatogenesis. However, little is known about the expression patterns or function of miRNAs in human testes involved in infertility.
Li Xin +7 more
openaire +3 more sources
Multiple Testicular Sampling in Non-Obstructive Azoospermia-Is it Necessary? [PDF]
Journal of Urology, 1998 Spermatogenesis may be focal in non-obstructive azoospermia. The present study was conducted to determine whether the performance of multiple, rather than a single testicular sample contributes to obtaining spermatozoa in amounts sufficient for fertilization and cryopreservation in non-obstructive, azoospermic patients.
R, Hauser +8 more
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Surgical recovery of sperm in non-obstructive azoospermia [PDF]
Asian Journal of Andrology, 2011 The development of intracytoplasmic sperm injection (ICSI) opened a new era in the field of assisted reproduction and revolutionized the assisted reproductive technology protocols for couples with male factor infertility. Fertilisation and pregnancies can be achieved with spermatozoa recovered not only from the ejaculate but also from the seminiferous ...
openaire +2 more sources
Obstructive azoospermia: reconstructive techniques and results [PDF]
, 2013 Obstructive azoospermia is a common cause of male infertility and can result from infection, congenital anomalies, or iatrogenic injury. Microsurgical vasal reconstruction is a suitable treatment for many cases of obstructive azoospermia, although some ...
Baker, Karen +4 more
core +1 more source
Sperm retrieval techniques in azoospermic patients: PESA, MESA, TESA, TESE and MICROTESE [PDF]
Einstein (São Paulo), 2009 Azoospermia is defined as the absence of mature spermatozoa in semen analysis after centrifugation. The causes of azoospermia may be related to spermatogenesis defects and classified as non-obstructive azoospermia, or to the obstruction of the efferent ...
Marcelo Vieira, Sidney Glina
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