Results 41 to 50 of about 13,306 (243)
Intracytoplasmic spermatid injection and in vitro maturation: fact or fiction?
ClinicsIntracytoplasmic injection with testicular spermatozoa has become a routine treatment in fertility clinics. Spermatozoa can be recovered in half of patients with nonobstructive azoospermia.
Veerle Vloeberghs +2 more
doaj +1 more source
International Brazilian Journal of Urology, 2005 OBJECTIVE: To search and to identify spermatozoa and spermatids, present in the ejaculate of non-obstructive azoospermic patients. MATERIALS AND METHODS: 27 patients, aged between 18 and 48 years, with initial diagnosis compatible with non-obstructive ...
Odival Timm Jr +6 more
doaj +1 more source
Animal Research and One Health, EarlyView.This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun +6 more
wiley +1 more source
Three-dimensional reconstruction of rat sperm using volume electron microscopy
Acta Biochimica et Biophysica SinicaThree-dimensional (3D) reconstruction serves as a crucial instrument for the analysis of biological structures. In particular, a comprehensive and accurate 3D ultrastructural examination of rat sperm is vital for understanding and diagnosing male ...
Liu Jiazheng +7 more
doaj +1 more source
Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies
Animal Research and One Health, EarlyView.Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu +6 more
wiley +1 more source
Sprn is expressed in the nebenkern throughout spermatid elongation.
, 2014 Endogenous Sprn expression is first detectable, though weak, in meiosis I and II, when mitochondria form first aggregates (arrowheads). Sprn expression increases at the spermatid nebenkern and persists throughout spermatid elongation (arrows), but is ...
Jieyan V. Chen (635710) +1 more
core +1 more source
Time-lapse imaging of Drosophila testis for monitoring actin dynamics and sperm release
STAR Protocols, 2022 Summary: Here we describe a simple step-by-step protocol for collecting high-resolution, time-lapse images of intact Drosophila testis ex vivo for a limited period using a confocal microscope, with minimum photo-toxic damage, to monitor spermatid ...
Tushna Kapoor +2 more
doaj +1 more source
Cytoskeleton, EarlyView.ABSTRACT Cooperativity between cytoskeletal proteins is crucial for spatiotemporal coordination in biological processes, like oogenesis. In mammalian and Drosophila oogenesis, proper assembly and function of actin networks require coordination between actin assembly factors Spire and formins, as well as actin‐associated proteins like myosins and Rab ...
Joseph Y. Ong +7 more
wiley +1 more source
Number of spermatid-like cells at 48 h post-transfection.
, 2018 (A) Fluorescence images of TSA-treated cells. White arrows indicate spermatid-like cells. Scale bar represents 10 μm. (B) Graphic representation of spermatid-like cells at 48 h after transfection in relation of TSA concentration: “a” mean value P = 0 ...
Luca Palazzese (4634500) +4 more
core +1 more source
Fate of microinjected spermatid mitochondria in the mouse oocyte and embryo
, 1998 Mouse round spermatids labelled with MitoTracker were microinjected into Sr2+-activated mouse oocytes. The labelled mitochondria were tracked up to the morula/blastocyst stage using fluorescence microscopy.
Yanagimachi, R. +2 more
core +2 more sources