Results 51 to 60 of about 33,731 (224)

Cell proliferation and differentiation kinetics during spermatogenesis in Hydra carnea [PDF]

, 1985
Spermatogenesis inHydra carnea was investigated. The cell proliferation and differentiation kinetics of intermediates in the spermatogenesis pathway were determined, using quantitative determinations of cell abundance, pulse and continuous labelling ...
A Brauer, A Weismann, B Romeis, CN David, CN David, CN David, CN David, E Downing, HR Bode, J Zihler, L Hyman, P Brien, P Brien, P Brien, P Tardent, P Tardent, RR Cowden, WF Loomis   +17 more
core   +1 more source

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

The Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga, Verônica Oliveira‐Bahia, Maria Auxiliadora Ferreira, José Ribamar Felipe Marques, Diva Araújo Guimarães   +4 more
wiley   +1 more source

In vitro propagation of XXY human Klinefelter spermatogonial stem cells: A step towards new fertility opportunities

Frontiers in Endocrinology, 2022
Klinefelter Syndrome (KS) is characterized by a masculine phenotype, supernumerary sex chromosomes (47, XXY), and impaired fertility due to loss of spermatogonial stem cells (SSCs).
Guillermo Galdon, Guillermo Galdon, Nicholas A. Deebel, Nicholas A. Deebel, Nima Pourhabibi Zarandi, Darren Teramoto, YanHe Lue, Christina Wang, Ronald Swerdloff, Mark J. Pettenati, William G. Kearns, Stuart Howards, Stanley Kogan, Stanley Kogan, Anthony Atala, Anthony Atala, Hooman Sadri-Ardekani, Hooman Sadri-Ardekani   +17 more
doaj   +1 more source

Testicular expression of TDRD1, TDRD5, TDRD9 and TDRD12 in azoospermia. [PDF]

, 2020
BACKGROUND: Tudor domain-containing proteins (TDRDs) play a critical role in piRNA biogenesis and germ cell development. piRNAs, small regulatory RNAs, act by silencing of transposons during germline development and it has recently been shown in animal ...
Aghaei, M, Alipourfard, I, Babakhanzadeh, E, Ghasemi, N, Hosseinnia, M, Jamshidi, Y, Khodadadian, A, Mehrjardi, MYV, Nazari, M, Rostami, S   +9 more
core   +1 more source

Ursolic Acid Alleviates Orchitis via Modulating Ferroptosis in Peritubular Myoid Cells of Testis

Animal Research and One Health, EarlyView.
Ursolic acid modulates key ferroptosis‐related pathways in the peritubular myoid cells of the testis in forest musk deer. ABSTRACT Chronic stress adversely affects reproductive health, increasing susceptibility to pathologies such as orchitis. Additionally, the maintenance of iron homeostasis is essential for preserving the function of the testicles ...
Yang Wang, Tianqi Jin, Zexin Chen, Ye Gong, Qimin Liu, Zifang Wu, Heran Cao, Yan Li, Yuyan Liu, Tianhao Yang, Zhihong Jiang, Wuzi Dong   +11 more
wiley   +1 more source

G9a co-suppresses LINE1 elements in spermatogonia [PDF]

Epigenetics & Chromatin, 2014
Repression of retrotransposons is essential for genome integrity and the development of germ cells. Among retrotransposons, the establishment of CpG DNA methylation and epigenetic silencing of LINE1 (L1) elements and the intracisternal A particle (IAP) endogenous retrovirus (ERV) is dependent upon the piRNA pathway during embryonic germ cell ...
Monica Di Giacomo, Stefano Comazzetto, Srihari C Sampath, Srinath C Sampath, Dónal O’Carroll   +4 more
openaire   +3 more sources

Germinal Epithelium Cytology during Spermatogenesis in the Alligator Snapping Turtle, Macrochelys temminckii (Reptilia: Chelydridae) [PDF]

, 2018
We investigated the cytology of the seminiferous epithelia of the Alligator Snapping Turtle (Macrochelys temminckii). Spermatogenic and regressed testes were assessed from 2 adult individuals collected in Arkansas in May and September of 1993 ...
Gribbins, Kevin M., Trauth, Stanley E.
core   +3 more sources

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

Spermatogenesis disorders in sterlet (Acipenser ruthenus Linnaeus, 1758) in water area of the Kakhovka Reservoir

Ribogospodarsʹka Nauka Ukraïni
Purpose. To conduct histological studies of sterlet spermatogenesis in technogenic conditions. To determine the level of reproductive system disorders, to identify possible causes of abnormalities.
М. Koziy
doaj   +1 more source

Isolation and Characterization of Highly Pure Type A Spermatogonia From Sterlet (Acipenser ruthenus) Using Flow-Cytometric Cell Sorting

Frontiers in Cell and Developmental Biology, 2021
Sturgeons are among the most ancient linages of actinopterygians. At present, many sturgeon species are critically endangered. Surrogate production could be used as an affordable and a time-efficient method for endangered sturgeons. Our study established
Xuan Xie, Tomáš Tichopád, Galina Kislik, Lucie Langerová, Pavel Abaffy, Radek Šindelka, Roman Franěk, Michaela Fučíková, Christoph Steinbach, Mujahid Ali Shah, Ivo Šauman, Ivo Šauman, Fan Chen, Martin Pšenička   +13 more
doaj   +1 more source