Results 181 to 190 of about 10,513,345 (205)

Obstructive and Non-Obstructive Azoospermia

2012
Azoospermia is defined as the complete absence of spermatozoa upon examination of the semen [including capillary tube centrifugation (CTC), strictly confirmed by the absence of spermatozoa issued in urine after ejaculation]. The presence of rare spermatozoa (
PASTORE, ANTONIO LUIGI, PALLESCHI, GIOVANNI, SILVESTRI, LUIGI, LETO, ANTONINO, CARBONE, Antonio   +4 more
openaire   +1 more source

Glucose and lipid profiles in men with non-obstructive azoospermia

2022
Abstract The impact of a low testosterone level among men with non-obstructive azoospermia with various testicular histopathological patterns on the regulation of glucose and lipid metabolism is less well known than among the general population.
Rasyid, Nur, Widi Atmoko, Prasetyo, Dimas Tri, Ponco Birowo, Dwi Ari Pujianto   +4 more
openaire   +1 more source

Intracytoplasmic sperm injection in obstructive and non-obstructive azoospermia

Human Reproduction, 1997
We compared the results of intracytoplasmic sperm injection (ICSI) in: (i) obstructive versus non-obstructive azoospermia, (ii) obstructive azoospermia using epididymal versus testicular spermatozoa and (iii) acquired versus congenital obstructive azoospermia due to congenital absence of the vas deferens (CAVD). A retrospective analysis was done of 241
R T, Mansour, A, Kamal, I, Fahmy, N, Tawab, G I, Serour, M A, Aboulghar   +5 more
openaire   +2 more sources

Analysis of genes implicated in non-obstructive azoospermia

Steroids
Non-obstructive azoospermia (NOA) is the most common cause of male infertility, accounting for approximately 60 % of azoospermia cases. In recent years, gene mutations have emerged as the primary factor under investigation for the etiology of NOA. Therefore, finding the cause and pathogenesis of NOA at the genetic level has become one of the current ...
Junwei, Wang, Shuhui, Wang, Meng, Wang, Jinfei, Yang   +3 more
openaire   +2 more sources

[Non-obstructive azoospermia and ICSI].

Contraception, fertilite, sexualite (1992), 1998
50 cases of non obstructive azoospermia required testicular sperm extraction and ICSI. Results are promising but ability to find spermatozoa remains questionable. Further studies are necessary to improve success of the method. Genetic research also need to be developed for better understanding the process.
M, Adjiman, F X, Aubriot, A, Glissant, A, Hazout, C, Nathan, A, Stanovici, M, Dumont, P, Cohen-Bacrie   +7 more
openaire   +1 more source

Mechanisms of non-obstructive azoospermia caused by TOP6BL variants

Reproduction
In brief Non-obstructive azoospermia (NOA) is a major cause of male infertility, with many cases having unknown origins. This study identifies two TOP6BL variants linked to NOA, revealing their impact on meiotic DNA double-strand break (DSB ...
Chao Wang, Yanwei Sha, Yayun Ji, Peilin Zhou, Shie Wang, Huiliang Zhou   +5 more
openaire   +2 more sources

Non-obstructive azoospermia and clinical varicocele: therapeutic options

International Urology and Nephrology, 2013
Ten to fifteen percent of infertile men are azoospermic, and sixty percent of these men have been classified as having non-obstructive azoospermia (NOA). NOA results from testicular failure, and one of the causes of this is the presence of varicocele. Varicocele is observed in 5-10 % of men with NOA.
openaire   +2 more sources

GENETIC ANOMALIES DETECTED IN PATIENTS WITH NON-OBSTRUCTIVE AZOOSPERMIA AND OLIGOZOOSPERMIA

Archives of Andrology, 2006
Genetic factors have a major importance in male infertility etiology. Numerical and structural chromosomal abnormalities seem to be frequent inoligospermia and azoospermia cases with unknown etiology. In this study, 819 patients with azoospermia (383) and oligospermia (436) who attended the infertility department between 1995-2005 were evaluated ...
Imirzalioglu, N, Samli, H, Solak, M, Samli, MM   +3 more
openaire   +4 more sources

[Stem cell therapy for non-obstructive azoospermia].

Zhonghua nan ke xue = National journal of andrology, 2021
Non-obstructive azoospermia (NOA) is an important factor that causes male infertility. Stem cells are a group of cells capable of self-renewal and multi-directional differentiation, and embryonic stem cells and induced pluripotent stem cells can generate spermatozoa through differentiation, which, however, is confronted with ethical constraints and the
Cun-Can, Deng, Gui-Hua, Liu
openaire   +1 more source

A case of non obstructive azoospermia

Endocrine Abstracts, 2023
D M Kumarathunga P A, Vindya Wellala, George Yovos, Puja Thadani, Harpal Randeva   +4 more
openaire   +1 more source