Results 41 to 50 of about 5,092 (173)

Loss‐of‐Function Variants in CCDC189 Cause Human Oligoasthenoteratozoospermia by Disrupting Sperm Flagellar and Acrosomal Architecture

Andrology, EarlyView.
ABSTRACT Background Oligoasthenoteratozoospermia (OAT), characterized by reduced sperm count, impaired motility, and abnormal morphology, is a major cause of male infertility with substantial genetic heterogeneity. However, the underlying genetic etiology remains unresolved in a large proportion of affected individuals.
Jianteng Zhou, Ghulam Mustafa, Tingting Lin, Jingwei Ye, Huan Zhang, Hanwei Jiang, Kexin Yang, Guoning Huang, Qinghua Shi   +8 more
wiley   +1 more source

Testicular Biopsies in Adolescent and Adult Andrological Patients: The EAA Clinical Guidelines

Andrology, EarlyView.
ABSTRACT Background Histological evaluation of testicular tissue is central to the assessment of infertile men, particularly those at an increased risk of testicular germ cell tumors (TGCT). Traditionally, testicular biopsies have been used primarily for diagnostic purposes, such as the detection of germ cell neoplasia in situ (GCNIS). With advances in
Lise Aksglaede, George Kanakis, Ewa Rajpert‐De Meyts, Davor Jezek, Ferran Algaba, Gert Dohle, Jolanta Slowikowska‐Hilczer, Sabine Kliesch, Hermann M. Behre, Csilla Krausz, Dimitrios G. Goulis, Niels Jørgensen   +11 more
wiley   +1 more source

Obstructive azoospermia as an unusual complication associated with herniorrhaphy of an omphalocele: a case report

Journal of Medical Case Reports, 2011
Introduction Iatrogenic damage to the seminal tract is one of the causes of obstructive azoospermia, which can be an indication for reconstruction surgery.
Kanematsu Akihiro, Yoshimura Koji, Soda Takeshi, Ichioka Kentaro, Okubo Kazutoshi, Tsuchihashi Kazunari, Ogawa Osamu, Nishiyama Hiroyuki   +7 more
doaj   +1 more source

Obesity Is an Independent Risk Factor for Oligozoospermia, With Co‐Existing Hyperglycemia Exacerbating Risks of Asthenozoospermia and Elevated Sperm DNA Fragmentation

Andrology, EarlyView.
ABSTRACT Background Metabolic health plays a critical role in maintaining male fertility and may influence offspring health. Therefore, it is necessary to incorporate metabolic indicators into the clinical assessment of male fertility. However, the relationships between different metabolic abnormalities and semen quality remain incompletely understood.
Rubing Hu, Haijiao Zou, Qiaodan Li, Weihong Fan, Jian Xu   +4 more
wiley   +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

Taiwanese 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, Fu-Jen Huang, Pin-Yao Lin, Fu-Tsai Kung, Ying-Jui Lin, Kuo-Chung Lan   +5 more
doaj   +1 more source

Critical Windows of Air Pollution Exposure During Spermatogenesis and Intrauterine Insemination Outcomes

Paediatric and Perinatal Epidemiology, EarlyView.
ABSTRACT Background Male preconception health remains a critically under‐addressed area of family planning. While research suggests air pollution may harm semen quality, downstream impacts on pregnancy, particularly for more vulnerable infertility treatment populations, are understudied.
Lindsey M. Russo, J. Richard Pilsner, Timothy P. Canty, Neil J. Perkins, Pauline Mendola, Karen C. Schliep, May Shaaban, Rachael B. Hemmert, Akanksha Singh, Allison M. Ring, James A. Vanderslice, C. Matthew Peterson, Erica B. Johnstone, Kaniz Rabeya, Carrie Nobles   +14 more
wiley   +1 more source

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

Chromosomal and molecular abnormalities in a group of Brazilian infertile men with severe oligozoospermia or non-obstructive azoospermia attending an infertility service

International Brazilian Journal of Urology, 2011
PURPOSE: To determine the frequency of genetic alterations in a population of Brazilian infertile men with severe oligozoospermia or non-obstructive azoospermia.
Fernanda A. Mafra, Denise M. Christofolini, Bianca Bianco, Marcello M. Gava, Sidney Glina, Sintia I. N. Belangero, Caio P. Barbosa   +6 more
doaj   +1 more source

Shorter Obstructive Intervals and Motile Sperm on Intraoperative Vasal Fluid Evaluation Predict Favorable Semen Parameters Following Vasovasostomy

Andrology, Volume 14, Issue 6, Page 1801-1808, September 2026.
ABSTRACT Background Vasectomy reversal is the primary method of fertility restoration for men who wish to pursue natural conception following vasectomy. The existing body of literature evaluating vasovasostomy (VV) success is primarily focused on endpoints that capture the presence or absence, rather than the quantity and quality, of sperm in ...
Andrew Barr, Bryan D. Naelitz, Jayant Siva, Sanjay Vallabhaneni, Leila Momtazi‐Mar, Neel Parekh, Raevti Bole, Scott D. Lundy   +7 more
wiley   +1 more source

A Study on Causes of Azoospermia in Urology Clinic of Yasuj University of Medical Sciences

Armaghane Danesh Bimonthly Journal, 2006
: Introduction & Objective: Azoospermia means no sperm in semen. It may be due to hormonal imbalance, any disorder in production of sperm, or might be due to obstruction in sperm pathway from testis till ejaculatory ducts.
SMR Rabani, A Moosavizadeh
doaj