Results 61 to 70 of about 57,158 (293)
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
doaj
Management of the Infertile Male with Azoospermia
Düzce Tıp Fakültesi Dergisi, 2022 Azoospermia means the complete absence of spermatozoa upon examination of the semen. Azoospermia may result from a lack of spermatozoa production in the testicles, or from an inability of produced spermatozoa to reach the emitted semen.
Erdem Akbay, Mesut Tek
doaj +1 more source
International Journal of Molecular Sciences, 2023 Male infertility is a global issue that seriously affects reproductive health. This study aimed to understand the underlying causes of idiopathic non-obstructive azoospermia (iNOA), which is a type of male infertility with unknown origins that accounts ...
P. Xia +8 more
semanticscholar +1 more source
Analysis of Y Chromosome Microdeletions and Mutation in Exon7 of the STAG3 Gene in Iranian Infertile Men with Idiopathic Non-Obstructive Azoospermia [PDF]
Majallah-i dānishgāh-i ̒ulūm-i pizishkī-i Arāk, 2016 Background: Azoospermia is defined as the absence of sperm in the semen and is divided in two types; obstructive and non-obstructive azoospermia. Non-obstructive azoospermia include approximately 60% of azoospermia patients.
Sara Pouriamanesh +5 more
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Serum estradiol levels in infertile men with non-obstructive azoospermia
Therapeutic Advances in Reproductive Health, 2020 Purpose: To report the different patterns of estradiol levels in infertile men with non-obstructive azoospermia and correlate these levels with their clinical and laboratory findings.
Nader Salama, Saeed Blgozah
doaj +1 more source
Journal of Personalized Medicine, 2023 Background: Non-obstructive azoospermia (NOA) presents a challenge in male infertility management. This study aimed to assess the efficacy of diagnostic testicular biopsy (DTB) in predicting sperm retrieval success via therapeutic testicular biopsy (TTB)
Ares Kaltsas +9 more
semanticscholar +1 more source
Serum inhibin B as a marker of spermatogenesis [PDF]
, 1998 Inhibin B is produced by Sertoli cells, provides negative feedback on FSH secretion, and may prove to be an important marker for the functioning of seminiferous tubules.
Jong, F.H. (Frank) de +4 more
core +4 more sources
Heat Sensing Receptor TRPV1 Is a Mediator of Thermotaxis in Human Spermatozoa [PDF]
, 2016 The molecular bases of sperm thermotaxis, the temperature-oriented cell motility, are currently under investigation. Thermal perception relies on a subclass of the transient receptor potential [TRP] channels, whose member TRPV1 is acknowledged as the ...
\u160abovi\u107, I +9 more
core +8 more sources
Sperm retrieval techniques for assisted reproduction
International Brazilian Journal of Urology, 2011 Different surgical methods such as PESA, MESA, TESA, TESE and micro-TESE have been developed to retrieve spermatozoa from either the epididymis or the testis according to the type of azoospermia, i.e., obstructive or non-obstructive.
Sandro C. Esteves +2 more
doaj +1 more source
Meiotic recombination and male infertility: from basic science to clinical reality? [PDF]
, 2011 Infertility is a common problem that affects approximately 15% of the population. Although many advances have been made in the treatment of infertility, the molecular and genetic causes of male infertility remain largely elusive. This review will present
Hann, Michael C. +2 more
core +1 more source