Results 81 to 90 of about 31,775 (244)
Environmental Toxicology, EarlyView.ABSTRACT Mining plays a crucial role in economic development, but improper management can lead to severe environmental degradation. Particularly for iron ore, mining generates vast amounts of tailings often stored in unstable dams. This study aims to investigate the toxicological impacts of environmentally relevant concentrations of metals mixture ...
Kalinka Helóra Gomes de Almeida +7 more
wiley +1 more source
Journal of Advanced Biotechnology and Experimental Therapeutics, 2018 Di (n-butyl) phthalate (DBP), a potential endocrine disruptor, adversely affects male reproductive function via activation of oxidative stress. This study was conducted to investigate the protective effects of vitamin E (Vit E) and selenium (Se) on DBP ...
Mohammad Shah Alam; Md Nazmul Hoque
doaj +1 more source
Transcriptomic Variation during Spermiogenesis in Mouse Germ Cells. [PDF]
PLoS ONE, 2016 To explore variations in the transcription activity during spermiogenesis, round and elongated spermatids were collected from ICR/CD1 model mice using laser capture microdissection (LCM) and cauda epididymal sperm samples.
Haiyang Zuo +7 more
doaj +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
Andrology, EarlyView.Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas +6 more
wiley +1 more source
Hexavalents in spermatocytes of Robertsonian heterozygotes between Mus m. domesticus 2n 26 from the Vulcano and Lipari Islands (Aeolian Archipelago, Italy) [PDF]
, 2018 The size and shape of the chromosomes, as well as the chromosomal domains that compose them, are determinants in the distribution and interaction between the bivalents within the nucleus of spermatocytes in prophase I of meiosis.
Eliana Ayarza +6 more
core +3 more sources
Is there a future for spermatid injections? [PDF]
Human Reproduction, 1998 Microinjection of spermatids into oocytes has proven to be a successful assisted reproduction procedure in the animal model. In the human, low fertilization and cleavage to the 4-cell stage were reported after intracytoplasmic sperm injection (ICSI) with round spermatids.
P, Vanderzwalmen +9 more
openaire +2 more sources
The use of deidentified organ donor testes for research
Andrology, EarlyView.Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova +4 more
wiley +1 more source
Journal of Lipid Research, 2018 The sphingolipids (SLs) of rodent spermatogenic cells (spermatocytes, spermatids) and spermatozoa contain nonhydroxylated and 2-hydroxylated versions of very-long-chain (C26–C32) PUFAs (n-V and h-V, respectively) not present in Sertoli cells (SCs). Here,
Florencia X. Santiago Valtierra +7 more
doaj +1 more source
PHF7 Modulates BRDT Stability and Histone-to-Protamine Exchange during Spermiogenesis
Cell Reports, 2020 Summary: Spermatogenesis is a complex process of sperm generation, including mitosis, meiosis, and spermiogenesis. During spermiogenesis, histones in post-meiotic spermatids are removed from chromatin and replaced by protamines.
Chang Rok Kim +18 more
doaj +1 more source