Results 71 to 80 of about 38,921 (268)
Robertsonian chromosomes and the nuclear architecture of mouse meiotic prophase spermatocytes
Biological Research, 2014 BACKGROUND: The nuclear architecture of meiotic prophase spermatocytes is based on higher-order patterns of spatial associations among chromosomal domains from different bivalents.
Soledad Berríos +7 more
doaj +1 more source
Spermatocytic Seminoma in the Rat [PDF]
Toxicologic Pathology, 1985 During the necropsy of a 2-yr-old untreated control rat from a carcinogenicity study, a tan brown nodular mass was observed within the tunica albuginea of one testis. Both testes were processed for light and transmission electron microscopy. Histologically, the testicular mass was composed of round to polyhedral cells with distinct cell boundaries ...
S N, Kim +2 more
openaire +2 more sources
Cytoskeleton, EarlyView.ABSTRACT Elastic tethers connect telomeres of separating chromosomes in anaphase of animal cells. Immunofluorescence staining of titin in crane‐fly spermatocytes, using 4 different antibodies, shows that the giant elastic protein titin seems to be a component of mitotic tethers: titin “strands” extend between separating chromosomes, connecting their ...
Demetra Economopoulos +5 more
wiley +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
Transient protection from heat-stress induced apoptotic stimulation by metastasis-associated protein 1 in pachytene spermatocytes. [PDF]
PLoS ONE, 2011 BackgroundDeregulated thermal factors have been frequently implicated in the pathogenesis of male infertility, but the molecular basis through which certain responses are directed remain largely unknown.
Wei Li +9 more
doaj +1 more source
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.ABSTRACT In fish, sex determination and gonadal development are controlled by various genetic and environmental factors. In this study, experiments were conducted on the estuarine mummichog (Fundulus heteroclitus) to investigate gonadal differentiation following exposure to the synthetic estrogen, 17α‐ethinylestradiol (EE2).
Ibrahim Chehade +5 more
wiley +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
Non-random chromosome positioning in mammalian sperm nuclei, with migration of the sex chromosomes during late spermatogenesis [PDF]
, 2005 Chromosomes are highly organized and compartmentalized in cell nuclei. The analysis of their position is a powerful way to monitor genome organization in different cell types and states.
Abeydeera, L +3 more
core +1 more source
Regulatory mechanisms of reproduction in locusts and grasshoppers
New Plant Protection, EarlyView.Regulatory networks composed of numerous coding and noncoding genes play crucial roles in the reproduction of locusts and grasshoppers. This review integrates mechanistic advances in reproductive regulation, highlighting environmentally adaptive pathways and providing prospective targets for eco‐friendly pesticides.
Jing He, Jiliang Wang, Xinran Wang
wiley +1 more source
Role of androgen and gonadotrophins in the development and function of the Sertoli cells and Leydig cells: data from mutant and genetically modified mice [PDF]
, 2009 Development and maintenance of the male phenotype and establishment of fertility are all dependent upon the activity of the Sertoli cells and Leydig cells of the testis.
Abel, M.H. +4 more
core +1 more source