Results 61 to 70 of about 31,775 (244)
Testis-Specific Bb8 Is Essential in the Development of Spermatid Mitochondria. [PDF]
PLoS ONE, 2016 Mitochondria are essential organelles of developing spermatids in Drosophila, which undergo dramatic changes in size and shape after meiotic division, where mitochondria localized in the cytoplasm, migrate near the nucleus, aggregate, fuse and create the
Viktor Vedelek +4 more
doaj +1 more source
Selenoproteins in mammalian spermatogenesis:role of the nuclear GPx4 [PDF]
, 2011 The selenoprotein Phospholipid Hydroperoxide Glutathione Peroxidase (PHGPx/GPx4) is an enzyme unique among the various GPxs, because it is able to use protein thiols, beside glutathione, The GPx4 gene encodes for three isoforms having different ...
Maccari, Irene
core
Evidence of the presence of calcium/calmodulin-dependent protein kinase IV in human sperm and its involvement in motility regulation [PDF]
, 2005 The mechanisms involved in the regulation of mammalian sperm motility are not well understood. Calcium ions (Ca(2+)) have been suggested to play a key role in the maintenance of motility; nevertheless, how Ca(2+) modulates this process has not yet been ...
Buffone, Mariano Gabriel +6 more
core +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
A ubiquitin ligase complex regulates caspase activation during sperm differentiation in Drosophila. [PDF]
PLoS Biology, 2007 In both insects and mammals, spermatids eliminate their bulk cytoplasm as they undergo terminal differentiation. In Drosophila, this process of dramatic cellular remodeling requires apoptotic proteins, including caspases. To gain further insight into the
Eli Arama +3 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
Semina: Ciências Agrárias, 2014 A study was conducted to evaluate the associations among testis size, testosterone concentrations, semen parameters and aspects of spermatogenesis in Nelore bulls (n = 28). Testis size was measured from 10 to 29 months of age.
Erika Bezerra de Menezes +6 more
doaj +1 more source
Testicular degeneration and infertility following arbovirus infection [PDF]
, 2018 Arboviruses can cause a variety of clinical signs including febrile illness, arthritis, encephalitis and hemorrhagic fever. The recent Zika epidemic highlighted the possibility that arboviruses may also negatively affect the male reproductive tract.
Dattena, Maria +11 more
core +1 more source
iMetaOmics, EarlyView.SPARK is an interactive platform hosting 189,232 human testicular single‐cell transcriptomes across normal and infertile conditions. It enables automated, code‐free analysis and visualization, providing a powerful resource to explore cellular and molecular dynamics in male reproduction and infertility.
Lina Cui +9 more
wiley +1 more source
Subcellular evidence for biogenesis of autophagosomal membrane during spermiogenesis in vivo
Frontiers in Physiology, 2016 Although autophagosome formation has attracted substantial attention, the origin and the source of the autophagosomal membrane remains unresolved.
Yufei Huang +10 more
doaj +1 more source