Results 41 to 50 of about 10,170 (214)

Chromatin dynamics during spermiogenesis

Biochimica et Biophysica Acta (BBA) - Gene Regulatory Mechanisms, 2014
The function of sperm is to safely transport the haploid paternal genome to the egg containing the maternal genome. The subsequent fertilization leads to transmission of a new unique diploid genome to the next generation. Before the sperm can set out on its adventurous journey, remarkable arrangements need to be made during the post-meiotic stages of ...
Rathke, C, Baarends, Willy, Awe, S, Renkawitz-Pohl, R   +3 more
openaire   +2 more sources

Subcellular evidence for biogenesis of autophagosomal membrane during spermiogenesis in vivo

Frontiers in Physiology, 2016
Although autophagosome formation has attracted substantial attention, the origin and the source of the autophagosomal membrane remains unresolved.
Yufei Huang, Ping Yang, Tengfei Liu, Hong Chen, Xiaoya Chu, Nisar Ahmad, Qian Zhang, Quanfu Li, Lisi Hu, Yi Liu, Qiusheng Chen   +10 more
doaj   +1 more source

The multicopy gene Sly represses the sex chromosomes in the male mouse germline after meiosis. [PDF]

, 2009
Studies of mice with Y chromosome long arm deficiencies suggest that the male-specific region (MSYq) encodes information required for sperm differentiation and postmeiotic sex chromatin repression (PSCR).
Yamauchi, Yasuhiro, Julie Cocquet, Nabeel A Affara, Burgoyne, Paul S., Yasuhiro Yamauchi, Cocquet, Julie, Affara, Nabeel A., Mahadevaiah, Shantha K., Ellis, Peter J.I., Peter J I Ellis, Monika A Ward, Shantha K Mahadevaiah, Ward, Monika A., Paul S Burgoyne   +13 more
core   +1 more source

Spermiogenesis and sperm ultrastructure of Asetocalamyzas laonicola Tzetlin, 1985 (Polychaeta), an ectoparasite of the large spionid Scolelepis cf. matsugae Sikorsfi, 1994, from the White Sea

Scientia Marina, 2006
The sperm ultrastructure and spermatogenesis of the ectoparasitic polychaete Asetocalamyzas laonicola Tzetlin, 1985 (Calamyzidae) is investigated. The male cells are located freely in the coelom.
Elena V. Vortsepneva, Anna E. Zhadan, Alexander B. Tzetlin   +2 more
doaj   +1 more source

The KIF6‐RBP Complex Orchestrates mRNA Transport Required for Sperm Flagellar Assembly

Advanced Science, EarlyView.
Two homozygous deleterious KIF6 variants are identified in unrelated men with impaired sperm motility. Mouse models and multi‐omics analyses reveal that KIF6 cooperates with the RNA‐binding proteins FMRP and FXR1 to deliver mRNAs essential for sperm flagellar assembly, linking disrupted mRNA transport to reduced abundance of key structural and ...
Chunbo Xie, Sibing Yi, Xinle Lin, Shen Zhang, Weili Wang, Shimin Yuan, Lanlan Meng, Yong Li, Chen Tan, Chunjia Wei, Yanyan Yu, Yaoqiong Liang, Huan Zhang, Liang Hu, Guangxiu Lu, Wenbin He, Qianjun Zhang, Juan Du, Ge Lin, Chaofeng Tu, Yue‐Qiu Tan   +20 more
wiley   +1 more source

Contribution à la connaissance de l’ultrastructure de la espermiogenèse et du spermatozoïde des Digènes [PDF]

, 2012
[fra] La présente Thèse représente une importante contribution à la connaissance de l’ultrastructure de la spermiogenèse et du spermatozoïde des Digènes.
Bakhoum, Abdoulaye Jacque Sacodou
core  

Hormonal regulation of spermatogenesis and spermiogenesis

The Journal of Steroid Biochemistry and Molecular Biology, 2008
Normal testicular function is dependent upon hormones acting through endocrine and paracrine pathways both in vivo and in vitro. Sertoli cells provide factors necessary for the successful progression of spermatogonia into spermatozoa. Sertoli cells have receptors for follicle stimulating hormone (FSH) and testosterone which are the main hormonal ...
Sofikitis, N., Giotitsas, N., Tsounapi, P., Baltogiannis, D., Giannakis, D., Pardalidis, N.   +5 more
openaire   +3 more sources

eEF1G Orchestrates Translation to Ensure Meiotic Progression in Transcriptionally Quiescent Spermatocytes

Advanced Science, EarlyView.
eEF1G supports translation elongation of meiotic mRNAs in transcriptionally quiescent leptotene and zygotene spermatocytes. Its depletion in germ cells causes meiotic arrest at the zygotene stage, with defective homologous synapsis and unstable recombination intermediates.
Jianze Xu, Yuwei Hu, Xukun Lu, Yuling Cai, Tongtong Li, Ming Gao, Jinlong Ma, Yuan Gao, Shangming Liu, Zi‐Jiang Chen, Jing Meng, Hongbin Liu, Xiaohua Jiang   +12 more
wiley   +1 more source

Synergistic Toxicity of Low‐Concentration Metal Mixture on Male Rats: Reproductive, Renal, and Hepatic Effects

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, Thalita Tofanin Sargiani D'Assumpção, Ana Priscila Gomes Silva, Carolina Rocha Moreira de Oliveira, Tailisi Hoppe Trevizani, Rubens Cesar Lopes Figueira, Lucas Buruaem Moreira, Juliana Elaine Perobelli   +7 more
wiley   +1 more source

Steps of spermiogenesis in the ostrich (Struthio camelus) [PDF]

, 2023
Few studies describe the sequence of morphological events that characterize spermiogenesis in birds. In this paper, the clearly observable steps of spermiogenesis are described and illustrated for the first time in a commercially important ratite, the ...
Soley, John Thomson, Sutovsky, M., Sutovsky, P., Du Plessis, Lizette   +3 more
core   +1 more source