Results 111 to 120 of about 54,369 (287)
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 +5 more
doaj +1 more source
Reproductive Biology and Endocrinology, 2022 Background Non-obstructive azoospermia (NOA) is the most severe type of male infertility, affecting 1% of men worldwide. Most of its etiologies remain idiopathic.
D. Tang +13 more
semanticscholar +1 more source
Aberrant Wnt/β-Catenin Signaling Pathway in Testis of Azoospermic Men [PDF]
Advanced Pharmaceutical Bulletin, 2015 Purpose: The Importance and key role of Wnt/β-catenin signaling pathway in spermatogenesis is known. Abnormalities of this pathway in Sertoli and germ cells leads to infertility.
Marefat Ghaffari Novin +2 more
doaj +1 more source
Non-Invasive Diagnostics of Male Spermatogenesis from Seminal Plasma: Seminal Proteins
Diagnostics, 2023 The compounds of seminal plasma have great potential as biomarkers of male fertility and can be used as a diagnostic tool for types of azoospermia. Azoospermia occurs in approximately 1% of the male population, and for an effective therapy of this form ...
Michal Ješeta +9 more
doaj +1 more source
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 +4 more
core +3 more sources
Scientific Reports, 2022 VASA, also known as DDX4, is a member of the DEAD-box proteins and an RNA binding protein with an ATP-dependent RNA helicase. The VASA gene expression, which is required for human germ cell development, may lead to infertility.
Mehdi Amirian +3 more
semanticscholar +1 more source
Intracytoplasmic sperm injection for treatment of non-obstructive azoospermia
Gynecological Endocrinology, 1997 Four cases from a tertiary care teaching medical center were studied to assess the potential of sperm extraction, fertilization and the establishment of pregnancy in couples with non-obstructive azoospermia. Four couples with non-obstructive azoospermia underwent intracytoplasmic sperm injection after testicular sperm extraction.
Mohamed A. Sasy +2 more
openaire +3 more sources
Andrology, EarlyView.Abstract Background Poor semen quality is a well‐known feature in patients with testicular germ cell tumours (GCTs) at the time of diagnosis but the underlying biological reasons are incompletely understood. Objectives This study aimed to identify GCT‐specific clinical factors that are involved with poor semen quality in GCT patients.
Klaus‐Peter Dieckmann +9 more
wiley +1 more source
The Role of Varicocele Repair in Non-Obstructive Azoospermic Men: A Systematic Review [PDF]
, 2016 The outcomes of varicocele repair in non-obstructive azoospermic men remain the subject of controversy. Until now, small studies with small number of patients performed make it difficult to assess the efficacy of varicocele surgery in men with non ...
Birowo, Ponco +4 more
core +2 more sources
Andrology, EarlyView.Abstract Background Cryopreservation causes sperm injury and the success of surgical sperm retrieval (SSR) for azoospermic men is just over half depending on the cause of azoospermia. The role of autologous platelet‐rich plasma (PRP) in male factor infertility (MFI) is unclear. Objective To conduct a systematic review of the role of PRP in MFI focusing
Karl H. Pang
wiley +1 more source