Results 111 to 120 of about 20,184 (239)

Histological characterisation of gonadal sex differentiation in Malabar red snapper (Lutjanus malabaricus) for aquaculture advancement

open access: yesJournal of Fish Biology, EarlyView.
Abstract The Malabar red snapper (Lutjanus malabaricus) is a high‐value tropical marine species receiving growing attention for aquaculture development in Singapore and Southeast Asia. At present, seed production relies primarily on uncontrolled mass spawning in sea cages, a practice that lacks consistency, biosecurity and control of genetic ...
Bing Liang   +8 more
wiley   +1 more source

Developmental regulation of expression of the lactate dehydrogenase (LDH) multigene family during mouse spermatogenesis [PDF]

open access: yes, 1990
Expression of the Lactate Dehydrogenase (LDH) genes during various stages of spermatogenesis was studied by using a combination of Northern blot analyses and in situ hybridization techniques.
Bellvé, Anthony   +6 more
core  

Non-random chromosome positioning in mammalian sperm nuclei, with migration of the sex chromosomes during late spermatogenesis [PDF]

open access: yes, 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

Maternal Chrono‐Nutrition and Placental DNA Methylation: The BiSC Study

open access: yesMolecular Nutrition &Food Research, Volume 70, Issue 9, 13 May 2026.
This is the first study to examine how the timing of a mother's meals during pregnancy relates to changes in placental DNA methylation, an epigenetic mark. We found that the timing of the last daily meal was most important. Some epigenetic changes were linked to genes involved in placental function and development, and the long‐term health consequences
Joana Llauradó‐Pont   +12 more
wiley   +1 more source

Protective Effect of Intracellular Compounds of Lactobacillus plantarum on Goat Sperm Quality During Cryopreservation

open access: yesVeterinary Medicine and Science, Volume 12, Issue 3, May 2026.
Intracellular compounds from Lactobacillus plantarum were added to a goat sperm cryopreservation extender. A concentration of 20 µL/mL improved post‐thaw sperm quality, whereas higher concentrations (80–100 µL/mL) had detrimental effects. ABSTRACT Background Cryopreservation of sperm is a key strategy for preserving and transmitting the genetic traits ...
Farshad Ariyan   +3 more
wiley   +1 more source

Melav2, an elav-like gene, is essential for spermatid differentiation in the flatworm Macrostomum lignano [PDF]

open access: yes, 2009
BackgroundFailure of sperm differentiation is one of the major causes of male sterility. During spermiogenesis, spermatids undergo a complex metamorphosis, including chromatin condensation and cell elongation.
De Mulder, K.   +4 more
core  

Iron testes: sperm mitochondria as a context for dissecting iron metabolism [PDF]

open access: yes, 2010
A recent paper in BMC Developmental Biology reports that a mitochondrial iron importer is required for Drosophila male fertility and normal mitochondrial shaping in spermatids.
Karen G Hales
core   +1 more source

Atypical septate junctions maintain the somatic enclosure around maturing spermatids and prevent premature sperm release in Drosophila testis

open access: yesBiology Open, 2019
Tight junctions prevent paracellular flow and maintain cell polarity in an epithelium. These junctions are also required for maintaining the blood-testis barrier, which is essential for sperm differentiation.
Pankaj Dubey   +4 more
doaj   +1 more source

Luteinizing hormone receptor knockout mouse: What has it taught us?

open access: yesAndrology, Volume 14, Issue 4, Page 1017-1028, May 2026.
Abstract Luteinizing hormone (LH), along with its agonist choriongonadotropin (hCG) in humans, is the key hormone responsible for the tropic regulation of the gonadal function. LH and hCG act through their cognate receptor, the luteinizing hormone/choriongonadotropin receptor (LHCGR; more appropriately LHR in rodents lacking CG), located in the testis ...
Ilpo T. Huhtaniemi
wiley   +1 more source

Differential expression and sex chromosome association of CHD3/4 and CHD5 during spermatogenesis [PDF]

open access: yes, 2014
ATP-dependent nucleosome remodelers of the CHD family play important roles in chromatin regulation during development and differentiation. The ubiquitously expressed CHD3 and CHD4 proteins are essential for stem cell function and serve to orchestrate ...
Baarends, W.M. (Willy)   +8 more
core   +1 more source

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