Results 41 to 50 of about 31,236 (235)

Andrology laboratory technique for analysis of semen in men with azoospermia

open access: yesAsian Journal of Andrology
Discovery of spermatozoa during the 17th century led to developing technologies for semen analysis in the early 1900s, and then, standard techniques were implemented during the 20th century.
Andrian Japari   +2 more
doaj   +1 more source

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

open access: yes, 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

Copy number variations (CNVs) and karyotyping analysis in males with azoospermia and oligospermia

open access: yesBMC Medical Genomics, 2023
Background Considering the essential roles that genetic factors play in azoospermia and oligospermia, this study aims to identify abnormal chromosomes using karyotyping and CNVs and elucidate the associated genes in patients.
Xing Xin   +11 more
doaj   +1 more source

Management of the Infertile Male with Azoospermia

open access: yesDüzce 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

Clinical outcomes and development of children born to couples with obstructive and nonobstructive azoospermia undergoing testicular sperm extraction-intracytoplasmic sperm injection: A comparative study

open access: yesTaiwanese Journal of Obstetrics & Gynecology, 2015
Objective: To evaluate and compare the clinical outcomes and development of children born between obstructive azoospermia (OA) couples and nonobstructive azoospermia couples (NOA) after testicular sperm extraction (TESE) and intracytoplasmic sperm ...
Yi-Ru Tsai   +5 more
doaj   +1 more source

Genetic defects in human azoospermia [PDF]

open access: yesBasic and Clinical Andrology, 2019
As with many other diseases, genetic testing in human azoospermia was initially restricted to karyotype analyses (leading to diagnostic chromosome rearrangement tests for Klinefelter and other syndromes). With the advent of molecular biology in the 1980s, genetic screening was broadened to analyses of Y chromosome microdeletions and the gene coding for
Ghieh, Farah   +3 more
openaire   +5 more sources

A Novel Mutation of DAX-1 Associated with Secretory Azoospermia. [PDF]

open access: yesPLoS ONE, 2015
Secretory azoospermia is a severe form of male infertility caused by unknown factors. DAX-1 is predominantly expressed in mammalian reproductive tissues and plays an important role in spermatogenesis because Dax-1 knockout male mice show spermatogenesis ...
Lisha Mou   +7 more
doaj   +1 more source

Effects of X-ray irradiation on human spermatogenesis [PDF]

open access: yes, 1972
Direct cell kill and inhibition of mitosis have been suggested as mechanisms to explain the occurrence of absolute sterility following the irradiation of the testes.
Paulsen, C. A., Thorslund, T. W.
core   +1 more source

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