Results 71 to 80 of about 24,732 (236)
Andrology, EarlyView.ABSTRACT Background Asthenozoospermia is a significant contributing factor to male infertility. Accumulating evidence indicates that impaired sperm motility is closely linked to dysregulated microRNA expression during spermatogenesis. Seminal plasma exosomes are enriched with diverse microRNAs, which play pivotal roles in modulating sperm motility, the
Zhi‐Jian Zhu +8 more
wiley +1 more source
Acrosome reaction is subfamily specific in sea star fertilization
, 2006 In the fertilization process of sea stars, sperm is activated to go through the acrosome reaction before cell fusion. We focused on induction of the acrosome reaction as a key process in fertilization.
Matsumoto, Midori +3 more
core +1 more source
Impact of Sorting and Catch Media on Porcine Sperm Motility, Capacitation, and Viability
Andrology, EarlyView.ABSTRACT Background Fluorescence‐activated cell sorting (FACS) has emerged as a powerful tool for selecting spermatozoa of a desired population of fluorescent biomarkers, offering potential applications in reproductive biology and agriculture. However, concerns remain regarding sorting‐induced physiological alterations that could compromise spermatozoa
Tyler Weide, Juan Steibel, Karl Kerns
wiley +1 more source
Comparative morphometrics of oligochaete spermatozoa and egg‐acrosome correlation
, 1983 Ultrastructural variation between spermatozoa of nine lumbricid species has examined for Prearson r correlations, by principal components and coordinates analysis, and graphically, with particular reference to the acrosmoe.
Richards K.S. +3 more
core +1 more source
Andrology, EarlyView.ABSTRACT Background Advanced paternal age is associated with reduced male fertility and testicular dysfunction. Among the molecular regulators involved in aging, SIRT1, a NAD+‐dependent deacetylase, plays a pivotal role in maintaining oxidative balance and cellular homeostasis.
María Iniesta‐Cuerda +7 more
wiley +1 more source
Guinea Pig Sperm Morphology and Fertility under Different Photoperiod
Animals, 2023 Sperm morphology can predict the reproductive male fertilizing potential. This study aimed to determine the morphological and morphometric spermatozoa characteristics from guinea pigs subjected to different photoperiodic stimulation.
Hurley Abel Quispe-Ccasa +2 more
doaj +1 more source
Poultry Science, 2013 The aim of this study was to determine the site of enzyme release from the acrosome and the fate of the acrosomal cap during the process of acrosome reaction (AR) in fowl sperm. Gelatin substrate coverslips with halos were subjected to scanning electron microscopy to determine the site from which acrosomal proteolytic enzyme was released to form a halo
M U, Ahammad +6 more
openaire +2 more sources
Andrology, EarlyView.ABSTRACT Background Testicular germ cell tumours (TGCT) are the most common malignancies among young men and represent a major threat to reproductive health. Both the disease itself and oncological treatments, particularly chemotherapy, can compromise spermatogenesis and semen quality.
Ondrej Sanovec +18 more
wiley +1 more source
Damage assessment of the equine sperm membranes by fluorimetric technique
Brazilian Archives of Biology and Technology, 2010 To validate a practical technique of simultaneous evaluation of the plasma, acrosomal and mitochondrial membranes in equine spermatozoa three fluorescent probes (PI, FITC-PSA and MITO) were associated.
Eneiva Carla Carvalho Celeghini +5 more
doaj +1 more source
Peroxiredoxin 4 Involved in Spermatogenesis by Affecting Oxidative Stress and Ferroptosis
Andrology, EarlyView.ABSTRACT Background The main functions of testes are sperm production and androgen secretion in testicular befitting microenvironment. Excessive level of the reactive oxygen species (ROS) from metabolism and cellular events can lead to oxidative stress (OS) and ferroptosis, which injure the functions of mitochondria and endoplasmic reticulum (ER) of ...
Shuning Yuan +10 more
wiley +1 more source