Results 21 to 30 of about 16,641 (207)

A postmeiotically bifurcated roadmap of honeybee spermatogenesis marked by phylogenetically restricted genes.

PLoS Genetics, 2023
Haploid males of hymenopteran species produce gametes through an abortive meiosis I followed by meiosis II that can either be symmetric or asymmetric in different species.
Zhiyong Yin, Guiling Ding, Yingdi Xue, Xianghui Yu, Jie Dong, Jiaxing Huang, Jun Ma, Feng He   +7 more
doaj   +1 more source

White guava (Psidium guajava L.) fruit juice ameliorated the number of spermatogenic cells in rats (Rattus Novergicus) exposed to lead acetate

Ovozoa: Journal of Animal Reproduction
This study aims to determine the effect of oral administration of white guava fruit juice (Psidium guajava L.) on the spermatogenic cells of rats (Rattus norvegicus) exposed orally to lead acetate.
Muhammad Faizal Adiutomo, Suzanita Utama, Herry Agoes Hermadi, Wurlina Wurlina, Hardany Primarizky, Rochmah Kurnijasanti   +5 more
doaj   +1 more source

Immunohistochemical and hybridocytochemical study on ghrelin signalling in the rat seminiferous epithelium.

Folia Histochemica et Cytobiologica, 2010
The results of presented study demonstrate expression of ghrelin, its functional receptor GHSR-1a and their genes in spermatogenic cells of rat testis suggesting their functioning within seminiferous epithelium.
Marcin Ruciński, Karolina Olejniczak, Aldona Kasprzak, Piotr Sawiński, Ludmiła Rafińska, Andrzej Łukaszyk, Marek Ruchała, Jerzy Sowiński   +7 more
doaj   +1 more source

Intracytoplasmic Injection Using Spermatids and Subsequent Pregnancies: Round Versus Elongated Spermatids [PDF]

Journal of Assisted Reproduction and Genetics, 2002
The purpose of this clinical trial study was to report the outcome of intracytoplasmic injection of round (RS) and elongated (ES) spermatids retrieved from the testis of nonobstructive men. Seven and three cycles using RS and ES injections were performed, respectively.
Mohammad A, Khalili, Abbas, Aflatoonian, Panos M, Zavos   +2 more
openaire   +2 more sources

Germ cell differentiation-dependent and stage-specific expression of LANCL1 in rodent testis

European Journal of Histochemistry, 2009
LANCL1 (LanC-like protein 1) is related to the bacterial LanC (lanthionine synthetase C) family, which is involved in the biosynthesis of antimicrobial peptides.
JE Nielsen, MA Hansen, M Jørgensen
doaj   +1 more source

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

Successful fertilization and embryo development after spermatid injection: A hope for nonobstructive azoospermic patients

Journal of Human Reproductive Sciences, 2015
Spermatids are the earliest male germ cells with haploid set of chromosomes. Spermatid injection was introduced in human assisted reproduction for the treatment of men with non-obstructive azoospermia.
Geeta Goswami, Sarabjeet Singh, M Gouri Devi   +2 more
doaj   +1 more source

TCFL5 deficiency impairs the pachytene to diplotene transition during spermatogenesis in the mouse

Scientific Reports, 2022
Spermatogenesis is a complex, multistep process during which spermatogonia give rise to spermatozoa. Transcription Factor Like 5 (TCFL5) is a transcription factor that has been described expressed during spermatogenesis.
Javier Galán-Martínez, Inés Berenguer, Mª del Carmen Maza, Konstantinos Stamatakis, Núria Gironès, Manuel Fresno   +5 more
doaj   +1 more source

Spermatids as gametes: indications and limitations [PDF]

Human Reproduction, 1998
The feasibility of achieving viable embryos, developing to term after transfer into the uterus, by fertilizing oocytes with spermatids has been demonstrated both in animal studies and in preliminary human clinical trials. Here we review the current clinical indications of spermatid conception and discuss the predictable success rates associated with ...
J, Tesarik, M, Sousa, E, Greco, C, Mendoza   +3 more
openaire   +2 more sources

Super‐Multiplexed Label‐Free Raman Imaging Uncovers Novel Testicular Metabolic Couplings for Residual Body and Spermatogonial Differentiation

Advanced Science, EarlyView.
Super‐multiplexed Label‐free Raman Imaging (SLRI) enables 2D/3D metabolic mapping of intact Drosophila testes. Moving beyond descriptive morphology, it establishes a multidimensional tool for tissue metabolic remodeling, and offers a generalizable platform for complex tissue analysis, with implications extending to development and disease. ABSTRACT The
Jiaxin Li, Xia Chen, Yujuan Qi, Chen Qiao, Qiuru Huang, Dan Zhao, Weiyi Qian, Li Di, Yi Shi, Xiangqi Hu, Yueyue Shao, Kehan Wang, Zhiyu Tang‐Yang, Hanzhi Zang, Yuwen Du, Anran Dong, Jinxiong Feng, Jiayun Chen, Ying Zheng, Xiaofang Tan, Xiaoyu Zhao, Zhonghua Shi, Bo Zheng, Jun Yu   +23 more
wiley   +1 more source