Results 81 to 90 of about 32,786 (330)
New insights into the regulation of cholesterol efflux from the sperm membrane
Asian Journal of Andrology, 2015 Cholesterol is an essential component of the mammalian plasma membrane because it promotes membrane stability without comprising membrane fluidity. Given this important cellular role, cholesterol levels are tightly controlled at multiple levels.
Tamara Leahy, Bart M Gadella
doaj +1 more source
Frontiers in Cell and Developmental Biology, 2020 Cilia and flagella are conserved subcellular organelles, which arise from centrioles and play critical roles in development and reproduction of eukaryotes. Dysfunction of cilia leads to life-threatening ciliopathies.
Yanan Hou +14 more
doaj +1 more source
Role of Centriolar Matrix and Striated Rootlets in Centriolar Pairing and Orientation During Spermatogenesis in Hydractina echinata [PDF]
, 1985 Transmission electron microscopy of the spermatogenic stages of the hydroid, Hydractinia echinata, reveals a series of complex structural and positional changes in the centrioles of spermatocytes and spermatids.
Kleve, Maurice G.
core +2 more sources
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
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
Mouse tafazzin is required for male germ cell meiosis and spermatogenesis [PDF]
, 2015 Barth syndrome is an X-linked mitochondrial disease, symptoms of which include neutropenia and cardiac myopathy. These symptoms are the most significant clinical consequences of a disease, which is increasingly recognised to have a variable presentation.
Bryson, S. +6 more
core +3 more sources
PLoS Genetics, 2010 SUMO modification of transcription factors is linked to repression of transcription. The physiological significance of SUMO attachment to a particular transcriptional regulator, however, is largely unknown.
Bastian Stielow +7 more
semanticscholar +1 more source
Insect Science, EarlyView.Abstract The sterile insect technique (SIT) is a highly effective biologically‐based method for the suppression of many insect pest populations. SIT efficacy could be improved by methods of male sterilization that avoid the use of irradiation that can result in diminished fitness and mating competitiveness.
Alfred M. Handler +3 more
wiley +1 more source
Spermatogenesis and spermiogenisis in the testes of local Iraqi breed cat (Felis catus)
The Iraqi Journal of Veterinary Medicine, 2012 The seminiferous epithelium of the testes of cat consists of two groups of cells; Spermatogenic cells and Sertoli cells. The interstitial areas are filled with Leydic cells, blood and lymph vessels, and connective tissue.
AL-Samarrae N. S.
doaj +1 more source