Results 111 to 120 of about 32,366 (262)
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 +8 more
wiley +1 more source
Sperm Head–Tail Coupling Apparatus Diversity and Common Themes Among Species
Andrology, EarlyView.ABSTRACT Background A stable connection between the sperm head (containing the nucleus and acrosome) and tail (containing the axoneme, mitochondrial sheath, and periaxonemal structures) is critical for fertility. This connection is mediated by a series of nuclear, cytoplasmic, and centriole components that make up the head–tail coupling apparatus (HTCA)
Danielle B. Buglak +2 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 +11 more
wiley +1 more source
Biomarker ResearchThis study aimed to identify the ultrastructural features of sperm in Chinese asthenozoospermia patients and to evaluate their clinical implications.
Mo-qi Lv +26 more
doaj +1 more source
Adenosine—A Regulator of Human Testicular Peritubular Cells
Andrology, EarlyView.ABSTRACT Background Extracellular purines, in particular ATP and adenosine, are regulators of physiological and pathophysiological processes throughout the human body. Roles in the human testis are emerging and include actions on peritubular cells, which form the wall of seminiferous tubules.
Lina Scholz +12 more
wiley +1 more source
A sperm's tail: the importance of getting it right [PDF]
Human Reproduction, 2011 openaire +2 more sources
Improving ARTs: Microfluidics as a Tool for Sperm Selection
Andrology, EarlyView.ABSTRACT Sperm selection is a critical step in assisted reproductive technology (ART), as sperm quality directly influences embryo quality. In vivo, the female reproductive tract imposes several physical and physiological barriers that favors only the most optimal spermatozoa reaching the fertilization site.
A. Pérez‐Gómez +7 more
wiley +1 more source
Occupational Physical Activity Is Negatively Associated With Semen Quality
Andrology, EarlyView.ABSTRACT Background Lifestyle factors have been associated with semen quality and have been implicated in the reported global decline in semen parameters. Moderate physical activity has been linked to improved semen quality; however, the association between occupational physical activity and semen quality is limited.
Michal Efrat +5 more
wiley +1 more source
Australian Veterinary Journal, EarlyView.Objective To report 45 cases of melioidosis in dogs and cats from northern Australia and analyse trends in epidemiology, clinical presentation, pathogenesis and response to treatment over a 27‐year period. Design Retrospective and prospective analysis of clinical records.
K Lee +6 more
wiley +1 more source
A lumenal interrupted helix in human sperm tail microtubules. [PDF]
Sci Rep, 2018 Zabeo D +6 more
europepmc +1 more source