Results 1 to 10 of about 11,473 (260)

Differentiation between nonobstructive azoospermia and obstructive azoospermia: then and now [PDF]

open access: goldAsian Journal of Andrology
Male infertility has seen an increase in prevalence with cases of azoospermia estimated to affect 10%–15% of infertile men. Confirmation of azoospermia subsequently necessitates an early causal differentiation between obstructive azoospermia (OA) and ...
Logan Hubbard   +2 more
doaj   +5 more sources

Seminal plasma extracellular vesicles tRF-Val-AAC-010 can serve as a predictive factor of successful microdissection testicular sperm extraction in patients with non-obstructive azoospermia [PDF]

open access: goldReproductive Biology and Endocrinology, 2022
Background There is a lack of biomarkers for distinguishing non-obstructive azoospermia (NOA) patients with successful sperm retrieval (Sp+) from those with failed sperm retrieval (Sp-).
Xiaoxiao Han   +10 more
doaj   +2 more sources

Localization of obstruction sites in obstructive azoospermia: role of combined transscrotal–transrectal ultrasonography [PDF]

open access: yesInsights into Imaging
Objective To evaluate the diagnostic performance of combined transscrotal–transrectal ultrasonography in predicting sites of obstructive azoospermia. Materials and methods From June 2019 to March 2023, 166 obstructive azoospermia patients who underwent ...
Xin Li   +7 more
doaj   +2 more sources

Single-cell analysis of developing and azoospermia human testicles reveals central role of Sertoli cells

open access: yesNature 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, Chencheng Yao, Chao Yang
exaly   +2 more sources

A novel stepwise micro-TESE approach in non obstructive azoospermia [PDF]

open access: gold, 2016
Background: The purpose of the study was to investigate whether micro-TESE can improve sperm retrieval rate (SRR) compared to conventional single TESE biopsy on the same testicle or to contralateral multiple TESE, by employing a novel stepwise micro ...
Casciani, V   +9 more
core   +4 more sources

Differentiating between obstructive and non‐obstructive azoospermia: A machine learning‐based approach [PDF]

open access: yesBJUI Compass
Background Infertility is a major global concern, with azoospermia, being the most severe form of male infertility. Distinguishing between obstructive azoospermia (OA) and non‐obstructive azoospermia (NOA) is crucial due to their differing treatment ...
Abdolreza Haghpanah   +7 more
doaj   +2 more sources

A comparison of the expression patterns and diagnostic capability of the ncRNAs NEAT1 and miR-34a in non-obstructive azoospermia and severe oligospermia [PDF]

open access: yesHuman Genomics
Infertility is a major global health problem, affecting 8–12% of couples worldwide, with male causes contributing to approximately 50% of cases. Notably, around 15% of infertile men are azoospermic.
Aya Salman   +4 more
doaj   +2 more sources

Vas deferens to rete testis anastomosis for obstructive azoospermia [PDF]

open access: yesInternational Brazilian Journal of Urology
Purpose: This video aims to present an in-depth, step-by-step tutorial on microsurgical reconstruction for obstructive azoospermia, featuring a distinctive case involving anastomosis from vas deferens to rete testis.
Francesco C. Mesquita   +8 more
doaj   +2 more sources

Сondition of urogenital tract microbiotes and pro- and antioxidant system in male azoospermia

open access: yesRegulatory Mechanisms in Biosystems, 2021
Over the past 20 years, there has been a clear trend to increase in the number of infertile men in Ukraine, their percentage reaches 50% in infertile couples. There is a significant percentage of male infertility caused by azoospermia – the lack of sperm
M. Z. Vorobets   +5 more
doaj   +1 more source

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