Results 41 to 50 of about 7,530 (183)
The role of iron in normal and impaired testicular function
Andrology, EarlyView.Abstract Iron plays a critical role in testicular physiology, impacting spermatogenesis, testosterone production, and overall testicular function. Iron homeostasis is maintained through systemic and cellular regulatory mechanisms, including hepcidin‐mediated systemic iron control and the iron‐responsive element/iron regulatory protein (IRE/IRP) system ...
Aileen Harrer +2 more
wiley +1 more source
Neotropical IchthyologySpermiogenesis and spermatozoa of representatives of the genera Lebiasina and Piabucinaare described. Spermiogenesis is quite similar among all analyzed species of these genera and is identified as Type II.
Júlio César de O. Santana +3 more
doaj +1 more source
Wolbachia Induces Structural Defects Harmful to Drosophila simulans Riverside Spermiogenesis
Cells, 2023 The relationship between cytoplasmic incompatibility and the obligate intracellular alphaproteobacteria Wolbachia has for a long time been reported.
Maria Giovanna Riparbelli +2 more
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Andrology, EarlyView.ABSTRACT Background More than 1000 genes have been identified as predominantly expressed in the human testis. Advances in gene editing technologies have enabled the rapid and efficient generation of genetically engineered mice. This approach facilitates the screening of genes essential for spermatogenesis by analyzing knockout mouse models.
Yumiao Qiu +2 more
wiley +1 more source
Running the gauntlet: challenges to genome integrity in spermiogenesis
NucleusSpecies’ continuity depends on gametogenesis to produce the only cell types that can transmit genetic information across generations. Spermiogenesis, which encompasses post-meiotic, haploid stages of male gametogenesis, is a process that leads to the ...
Maiko Kitaoka, Yukiko M. Yamashita
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Ldha-Dependent Metabolic Programs in Sertoli Cells Regulate Spermiogenesis in Mouse Testis
Biology, 2022 Sertoli cells play indispensable roles in spermatogenesis by providing the advanced germ cells with structural, nutritional, and regulatory support. Lactate is regarded as an essential Sertoli-cell-derived energy metabolite that nurses various types of ...
Xiao-Na Zhang +6 more
doaj +1 more source
SPERMIOGENESIS IN CANCER CRABS [PDF]
The Journal of Cell Biology, 1969 Spermiogenesis in Cancer crabs was studied by light and electron microscopy. The sperm are aflagellate, and when mature consist primarily of a spherical acrosome surrounded by the nucleus with its short radiating arms. The acrosome forms by a coalescence of periodic acid-Schiff-positive (PAS-positive) vesicles.
openaire +2 more sources
Spermiogenesis in the Marine Shrimp, Sicyonia ingentis [PDF]
Development, Growth & Differentiation, 1986 Spermiogenesis in the marine prawn Sicyonia ingentis was examined using transmission electron microscopy. The acrosomal vesicle, derived from the fusion of pro‐acrosomal vesicles blebbed from the nuclear envelope, contains the membrane pouches, anterior granule and a spike.
Katherine, Shigekawa, Wallis H, Clark
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Microtubule Inner Protein CFAP77 Contributes to Sperm Motility and Male Fertility in Mice
Andrology, EarlyView.ABSTRACT Background Sperm motility is essential for male fertility, and its regulation is dependent on the structural integrity of the axoneme. The axoneme consists of a conserved “9+2” microtubule arrangement and is supported by microtubule inner proteins. However, the functional significance of many microtubule inner proteins remains unclear.
Haoting Wang +4 more
wiley +1 more source
Neotropical IchthyologyIn Corydoradinae, the presence of spermatids in the lumen of the testicular tubules together with spermatozoa suggests that spermatogenesis is of the semicystic type, whereas in Callichthyinae, sperm production occurs entirely within spermatocysts in the
Maria A. Spadella +2 more
doaj +1 more source