Results 41 to 50 of about 8,317 (213)

Synaptic defects at meiosis I and non-obstructive azoospermia [PDF]

Human Reproduction, 2006
Recent advances in immunofluorescence methodology have made it possible to directly monitor protein localization patterns in germ cells undergoing meiosis. We used this technology to examine the early stages of meiosis in testicular material obtained from men presenting for evaluation at infertility clinics.Specifically, we compared meiotic progression,
TOPPING, Daniel, BROWN, Petrice, JUDIS, Luann, SCHWARTZ, Stuart, SEFTEL, Allen, THOMAS, Anthony, HASSOLD, Terry   +6 more
openaire   +3 more sources

Insulin-like Peptide-6 Levels in Non-obstructive Azoospermia

Journal of the College of Physicians and Surgeons Pakistan, 2022
To investigate the serum versus insulin-like peptide-6 (INSL-6) levels in men with non-obstructive azoospermia (NOA) and normospermia.Descriptive study.Department of Urology, Balikligol State Hospital and Harran University, Sanliurfa, Turkey, between July and October 2020.The serum and seminal levels of INSL-6 were measured in men with NOA, and ...
Kemal, Gumus, Mehmet, Demir, Ismail, Dag
openaire   +2 more sources

Familial DMRT1-related non-obstructive azoospermia: a case report. [PDF]

J Assist Reprod Genet
Abstract   Purpose To report an exceptional case of male-to-male transmission of genetically based non-obstructive azoospermia (NOA) and varicocele through a naturally obtained pregnancy. Subjects and methods A father and his son were both diagnosed with NOA after ...
Severi G, Ambrosini E, Caramanna L, Monti L, Magini P, Innella G.   +5 more
europepmc   +3 more sources

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, Pierik, F.H. (Frank), Stijnen, Th. (Theo), Vreeburg, J.T.M. (Jan), Weber, R.F.A. (Robert)   +4 more
core   +4 more sources

Nonobstruktif azospermi olgularında yeni yaklaşımlar [PDF]

, 2019
Azospermi semende hiç sperm bulunamaması durumudur. Obstrüktif ve nonobstrüktif olmak üzere iki kategoriye ayrılır. Azospermi tanısı alan hastalardan elde edilen spermatozoayla, ilk gebelik ICSI (intrasitoplazmik sperm enjeksiyonu) işlemiyle 1993 ...
Özer, Mehmet Caner, Ünal, Murat Serkant   +1 more
core   +1 more source

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

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, DE TONI, Luca, DI NISIO, Andrea, Filippi, Andrea, Foresta, Carlo, Garolla, Andrea, Magagna, S, Menegazzo, M, Rocca, MARIA SANTA, Scattolini, Valentina   +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, Ricardo Miyaoka, Ashok Agarwal   +2 more
doaj   +1 more source

New era of cystic fibrosis: full mutational analysis and personalized therapy [PDF]

, 2017
Despite its apparently simple genetics, cystic fibrosis (CF) is a rather complex genetic disease. A lot of variability in the steps of the path from the cystic fibrosis transmembrane conductance regulator (CFTR ) gene to the clinical manifestations ...
Lucarelli, Marco
core   +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., Lau, Patricio E., Tempest, Helen G.   +2 more
core   +1 more source