Results 31 to 40 of about 54,369 (287)

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

Regulatory 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, O. V. Melnyk, I. V. Kovalenko, R. V. Fafula, A. T. Borzhievsky, Z. D. Vorobets   +5 more
doaj   +1 more source

Medical management of non-obstructive azoospermia: A systematic review [PDF]

Arab Journal of Urology, 2021
While most men with non-obstructive azoospermia (NOA) are not amenable to medical treatment, some men can be treated effectively with hormonal therapy, prior to considering surgery. In some cases, hormonal therapy alone can treat NOA, without the need for surgery.
Armand Zini, Mohammad H Alkandari
openaire   +3 more sources

Management of non‐obstructive azoospermia [PDF]

Reproductive Medicine and Biology, 2016
AbstractNon‐obstructive azoospermia (NOA) is defined as no sperm in the ejaculate due to failure of spermatogenesis and is the most severe form of male infertility. The etiology of NOA is either intrinsic testicular impairment or inadequate gonadotropin production.
Noritoshi Enatsu, Koji Chiba, Masato Fujisawa   +2 more
openaire   +2 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

Reproductive 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, Lin Hao, Zhenduo Shi, Ying Li, Liang Wang, Zhenbei Li, Qiang Zhang, Fangfang Hu, Yijuan Cao, Kun Pang, Zuobin Zhu   +10 more
doaj   +1 more source

Predictors of testicular sperm retrieval in patients with non-obstructive azoospermia: a review

Journal of International Medical Research, 2021
Azoospermia is divided into two categories of obstructive azoospermia and non-obstructive azoospermia. Before 1995, couples with a male partner diagnosed with non-obstructive azoospermia had to choose sperm donation or adoption to have a child. Currently,
Lin Qi, Ya P Liu, Nan N Zhang, Ying C Su
doaj   +1 more source

DDX3Y is likely the key spermatogenic factor in the AZFa region that contributes to human non-obstructive azoospermia

Communications Biology, 2023
Non-obstructive azoospermia, the absence of sperm in the ejaculate due to disturbed spermatogenesis, represents the most severe form of male infertility.
Ann-Kristin Dicke, A. Pilatz, M. J. Wyrwoll, M. Punab, C. Ruckert, L. Nagirnaja, K. Aston, D. Conrad, S. Di Persio, N. Neuhaus, D. Fietz, M. Laan, B. Stallmeyer, F. Tüttelmann   +13 more
semanticscholar   +1 more source

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 ...
Xiaoying Yu, Chao Jia, Hong Pan, Jing Wang, Yifeng Peng, Tao Liu, Qi Jin, Xiang Fang, Xu Ma, Binbin Wang   +9 more
openaire   +3 more sources

Testicular expression of TDRD1, TDRD5, TDRD9 and TDRD12 in azoospermia. [PDF]

, 2020
BACKGROUND: Tudor domain-containing proteins (TDRDs) play a critical role in piRNA biogenesis and germ cell development. piRNAs, small regulatory RNAs, act by silencing of transposons during germline development and it has recently been shown in animal ...
Aghaei, M, Alipourfard, I, Babakhanzadeh, E, Ghasemi, N, Hosseinnia, M, Jamshidi, Y, Khodadadian, A, Mehrjardi, MYV, Nazari, M, Rostami, S   +9 more
core   +1 more source

Anti-Müllerian hormone predicts positive sperm retrieval in men with idiopathic non-obstructive azoospermia—findings from a multi-centric cross-sectional study

Human Reproduction, 2023
STUDY QUESTION Is it possible to identify a reliable marker of successful sperm retrieval (+SR) in men with idiopathic non-obstructive azoospermia (iNOA) undergoing microdissection testicular sperm extraction (mTESE)?
E. Pozzi, M. Raffo, Fausto Negri, L. Boeri, A. Saccà, F. Belladelli, S. Cilio, E. Ventimiglia, A. d'Arma, L. Pagliardini, P. Vigano', M. Pontillo, R. Lucianò, M. Colecchia, F. Montorsi, M. Alfano, A. Salonia   +16 more
semanticscholar   +1 more source

Sperm recovery and IVF after testicular sperm extraction (TESE): effect of male diagnosis and use of off-site surgical centers on sperm recovery and IVF. [PDF]

PLoS ONE, 2013
Determine whether testicular sperm extractions and pregnancy outcomes are influenced by male and female infertility diagnoses, location of surgical center and time to cryopreservation.One hundred and thirty men undergoing testicular sperm extraction and ...
Kenan Omurtag, Amber Cooper, Arnold Bullock, Cathy Naughton, Valerie Ratts, Randall Odem, Susan E Lanzendorf   +6 more
doaj   +1 more source