Results 61 to 70 of about 17,684 (208)

Effect of Vasectomy on the Testosterone Levels and Testicular Structures in Bucks for Long Term [PDF]

The Iranian Journal of Veterinary Science and Technology
This study was conducted on 12 adults local crossbreed Bucks to investigate the long-term effect of the vasectomy on Testosterone levels, sexual efficiency, and testicular structures.
Dhurghamh alhaideri, Hussein Ibraheim
doaj   +1 more source

Regulation of spermatogonia

StemBook, 2008
The progression of spermatogenesis relies on the precise regulation of spermatogonial self-renewal and differentiation. Many genes/proteins have been identified with specific expression profiles in individual spermatogonial cell types but the molecular mechanism of their regulation is still obscure.
openaire   +1 more source

Modern competency‐based teaching of human sexual development

Anatomical Sciences Education, EarlyView.
Abstract Embryology is an integral part of anatomy and a key subject in basic medical education. The development of the sexual tract, which is closely associated with the formation of the urinary tract and the organs of continence, is particularly complex and relevant for many medical disciplines.
Elisabeth Eppler, Alessandro Bilella, Christian M. Hammer   +2 more
wiley   +1 more source

SPARK: A webserver for comprehensive search and analysis of testicular single‐cell transcriptomic data covering full lifecycle and pathology

iMetaOmics, EarlyView.
SPARK is an interactive platform hosting 189,232 human testicular single‐cell transcriptomes across normal and infertile conditions. It enables automated, code‐free analysis and visualization, providing a powerful resource to explore cellular and molecular dynamics in male reproduction and infertility.
Lina Cui, Xiaojian Lu, Hui Cai, Ziyan Zhuang, Yifei Guo, Qiaoling Jiang, Zhe Zhang, Hui Jiang, Xiaoyan Wang, Jingtao Guo   +9 more
wiley   +1 more source

Data on in vivo phenotypes of GFRα1-positive spermatogonia stimulated by interstitial GDNF signals in mouse testes

Data in Brief, 2016
This article contains the data related to the research article “in vivo dynamics of GFRα1-positive spermatogonia stimulated by GDNF signals using a bead transplantation assay” (Uchida et al., 2016) [1].
Aya Uchida, Yoshiakira Kanai
doaj   +1 more source

A New Paradigm: 46 Structural Cell Types Function as Environment‐Supporting Innate Immune Cells, With Endothelial and Vascular Smooth Muscle Cells as Key Prototypes

iNew Medicine, EarlyView.
ABSTRACT The scope, organization, and biological significance of innate immune functions across structural cell types remain poorly defined. To address these fundamental knowledge gaps, we analyzed experimental data of transcriptomes generated by our group and others.
Juanjuan Liu, Gayani K. Nanayakkara, Yifan Lu, Fatma Saaoud, Keman Xu, Ying Shao, Bo Yuan, Shih‐Yu Hung, Haiyan Xiang, Xianwei Wang, Sadia Mohsin, Sheng Wu, Xiaolei Liu, Juncheng Wei, Zhengjie Zhou, Beata Kosmider, Mingui Fu, Laisel Martinez, Roberto Vazquez‐Padron, Wenhui Hu, Shuping Ge, Hong Wang, Xiaofeng Yang   +22 more
wiley   +1 more source

Renewal of Spermatogonia in the Monkey (Macaca Fascilularis) [PDF]

Biology of Reproduction, 1986
Populations of different types of spermatogonia and their mitotic activity were analyzed in the monkey Macaca fascicularis: 3 adults aged 5-6 yr and 3 young aged 2-3 mo. Two young and two adult monkeys received injections of 3H-thymidine for radioautographic study of the relationships between Type A spermatogonia: dark Type A (Ad), pale Type A (Ap) and
J P, Fouquet, J P, Dadoune
openaire   +2 more sources

Paternal Exposure to the Neonicotinoid Pesticide Clothianidin Alters Sperm MicroRNA Profiles in Mice and Intergenerationally Reduces Locomotor Activity in Male Offspring

Journal of Applied Toxicology, EarlyView.
ABSTRACT Accumulating evidence suggests that paternal environmental factors have epigenetic effects on sperm and influence offspring. Neonicotinoid pesticides (NNs), which are widely used around the world, are known to affect offspring phenotypes through maternal exposure in mice, but the effect of the paternal exposure remains unknown.
Makiko Ito, Tetsushi Hirano, Sarika Nunobiki, Ayano Yoshimoto, Yukako Hara, Yuya Ishida, Sakura Yonoichi, Youhei Mantani, Toshifumi Yokoyama, Yoshiaki Tabuchi, Yoshinori Ikenaka, Nobuhiko Hoshi   +11 more
wiley   +1 more source

Ultrastructure of the Bovine Testis in Cattle (Bos taurus): New View

Animals
The purpose of this study was to analyze the ultrastructure of the testes of sexually immature calves and reproductive bulls of the Polish Holstein-Friesian Black-and-White breed. Utilizing TEM, this study identified three distinct stages of seminiferous
Katarzyna Michałek, Marta Grabowska, Patrycja Oberska, Dariusz Gączarzewicz, Andrzej Syczewski, Septimiu Cassian Tripon, Lucian Barbu-Tudoran, Maria Suciu   +7 more
doaj   +1 more source

Multiple Roles of Protamine Kinase SRPK1 and Phosphatase PP1γ in Sperm Development

PROTEOMICS, EarlyView.
ABSTRACT Protein phosphorylation regulates key events of male germ cell differentiation. In the testis, SRPK1 and PP1γ are involved in protamine phosphorylation and dephosphorylation, respectively, and their deregulation is linked to defective chromatin structure and male infertility.
Alberto de la Iglesia, Mélina Blanco, Meritxell Jodar, Olivier Feudjio, Marjorie Leduc, Judit Castillo, Julie Cocquet, Rafael Oliva   +7 more
wiley   +1 more source