Results 61 to 70 of about 10,513,345 (205)

Cytogenetic analysis and endocrine profile in patients with nonobstructive azoospermia or severe oligozoospermia

African Journal of Urology, 2018
Objective: To study the prevalence of chromosomal anomalies in infertile males with severe oligozoospermia or non obstructive azospermia and its correlation with clinical and endocrine profile. Patients and methods: Consecutive 30 male subjects (mean age
M.H. Ali, M. Soliman, A. Metwally, A. Ghobeish   +3 more
doaj   +1 more source

Analysis of copy number variation in men with non‐obstructive azoospermia

Andrology, 2022
AbstractBackgroundRecent findings demonstrate that single nucleotide variants can cause non‐obstructive azoospermia (NOA). In contrast, copy number variants (CNVs) were only analysed in few studies in infertile men. Some have reported a higher prevalence of CNVs in infertile versus fertile men.ObjectivesThis study aimed to elucidate if CNVs are ...
M. J. Wyrwoll, R. Wabschke, A. Röpke, M. Wöste, C. Ruckert, S. Perrey, N. Rotte, J. Hardy, L. Astica, D. G. Lupiáñez, J. Wistuba, B. Westernströer, S. Schlatt, A. J. Berman, A. M. Müller, S. Kliesch, A. N. Yatsenko, F. Tüttelmann, C. Friedrich   +18 more
openaire   +2 more sources

Distribution and number of Cajal-like cells in testis tissue with azoospermia

Kaohsiung Journal of Medical Sciences, 2017
We investigated the number and distribution of Cajal-like cells in patients with azoospermia. A total of 99 patients with non-obstructive azoospermia were divided into subgroups [19 patientsin hypospermatogenesis group (S1), 40 patients in maturation ...
Eray Hasirci, Tahsin Turunc, Nebil Bal, Mehmet Resit Goren, Huseyin Celik, Enis Kervancioglu, Ayhan Dirim, Mustafa Agah Tekindal, Hakan Ozkardes   +8 more
doaj   +1 more source

The value of testicular ‘mapping’ in men with non-obstructive azoospermia

Asian Journal of Andrology, 2011
As the field of assisted reproduction has advanced, many previously untreatable men are now biological fathers. Although finding sperm in men with obstructive azoospermia is not difficult, locating and retrieving spermatozoa in men with non-obstructive azoospermia remains a clinical challenge, largely because sperm production in these men can be patchy
Monika E, Beliveau, Paul J, Turek
openaire   +2 more sources

Research Progress on the Pathogenesis and Diagnostic Biomarkers of Azoospermia

Biomolecules
Azoospermia represents the most severe manifestation of male infertility and is classified into obstructive azoospermia (OA) and non-obstructive azoospermia (NOA).
Jiazhen Zou, Huihui Gao, Qingdan Gu, Peng Zhang, Heran Cao   +4 more
doaj   +1 more source

Can Testicular Size Be a Predictive Factor for Successful Sperm Retrieval in Patients with Non Obstructive Azoospermia?

Gynecology Obstetrics & Reproductive Medicine, 2019
Objective: Non-obstructive azoospermia, defined as absence of spermatozoa in the ejaculate caused by impaired spermatogenesis, is the most severe cause of male infertility.
Omer yumusak, Mehmet Cinar, Serkan Kahyaoglu, Yasemin Tasci, Gul Nihal Buyuk, Aysegul Oksuzoglu   +5 more
doaj   +1 more source

GSK3α‐mediated regulation of the RNA demethylase fat mass and obesity‐associated protein (FTO) during murine spermatogenesis

The FEBS Journal, EarlyView.
FTO regulates mRNA stability and translational efficiency through its m6A‐demethylation activity. GSK3 functions as an upstream regulator of FTO, leading to its inhibition via phosphorylation. In male germ cells, FTO activity is kept in check by GSK3α.
Neha Choudhari, Budheswar Dehury, Rounak Roy, Radhakrishnan Periyasamy, Indrashis Bhattacharya, Mahesh Sahare, Srinivasan Vijayraghavan, Souvik Dey   +7 more
wiley   +1 more source

Testicular histopathology and its association with germ cell numbers, serum concentrations of reproductive hormones, and semen quality

Andrology, Volume 14, Issue 8, Page 2388-2400, November 2026.
Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas, Nina Mørup, Trine H. Johannsen, Anders Juul, Lise Aksglaede, Sofia B. Winge, Kristian Almstrup   +6 more
wiley   +1 more source

Effects of clinical, laboratuary and pathological features on successful sperm retrieval in non-obstructive azoospermia

, 2016
The study aims to evaluate the correlation of testicular sperm extraction (TESE) and histopathology with various features of non-obstructive azoospermia (NOA) cases who consulted to our university-based infertility clinic, and the probability of ...
Alkibay, Turgut, Alkibay, T., Güneri, Çağrı, Güneri, Ç., Tunç, Lütfi, Tunç, L., Turgut Alkibay, Guneri, Cagri, Cagri Guneri, Lutfi Tunc, Çağrı Güneri   +10 more
core   +2 more sources

The use of deidentified organ donor testes for research

Andrology, Volume 14, Issue 8, Page 2359-2372, November 2026.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova, Marnie W. Skinner, Juliana I. Candelaria, Stephen R. Wellard, Philip W. Jordan   +4 more
wiley   +1 more source