Results 71 to 80 of about 25,438 (286)

Epigenetic Regulation of TET1-SP1 During Spermatogonia Self-Renewal and Proliferation

Frontiers in Physiology, 2022
Spermatogonia are the source of spermatogenic waves. Abnormal spermatogonia can cause ab-normal spermatogenic waves, which manifest as spermatogenic disorders such as oligospermia, hypospermia, and azoospermia.
Lingling Liu, Jin Wang, Shenghua Wang, Mudi Wang, Yuanhua Chen, Liming Zheng   +5 more
doaj   +1 more source

Hormonal control and signaling of the testis of the bat Molossus molossus during the processes of testicular maturation, regression, and recrudescence

The Anatomical Record, EarlyView.
Abstract Molossus molossus, a species of neotropical bat belonging to the Molossidae family, has an annual reproductive cycle that includes two peaks of spermatogenic activity, one in April and another in September, and a period of total testicular regression in December.
Emília M. Soares, Juliana F. Ferraz, Cornélio S. Santiago, Larissa P. R. Venâncio, Arlindo G. Macedo‐Junior, Sebastião R. Taboga, Mateus R. Beguelini   +6 more
wiley   +1 more source

Gonadotropin and Steroid Hormone Control of Spermatogonial Differentiation

, 2017
Spermatogenesis, the process essential for male fertility, relies on the continuous supply of differentiating germ cells from a pool of spermatogonial stem cells.
Smith, LB, Mitchell, RT, Lee B. Smith, Rod T. Mitchell, Laura O’Hara, O'Hara, L   +5 more
core   +1 more source

Cracd Marks the First Wave of Meiosis during Spermatogenesis and Is Mis-Expressed in Azoospermia Mice

Journal of Developmental Biology, 2020
Testicular development starts in utero and maturation continues postnatally, requiring a cascade of gene activation and differentiation into different cell types, with each cell type having its own specific function.
Paige L. Snider, Olga Simmons, Simon J. Conway   +2 more
doaj   +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

The role of UCH-L1 in mouse progenitor spermatogonia

, 2016
To maintain fertility throughout the life of the adult male, the spermatogonial stem cell (SSC) population of the testis needs to achieve a balance between self-renewal and differentiation. The chemical, molecular and physical environment that supports
Alpaugh, Whitney
core   +1 more source

Histological Findings in Testes of Baboons (Papio spp.) and Dwarf Bucks (Capra hircus) Subject to Repeated Immunisation Against GnRH. [PDF]

Vet Med Sci
Long‐term repeated immunisation against GnRH resulted in the absence of active spermatogenesis and may lead to irreversible infertility in dwarf bucks and baboons. Histological examination revealed a marked reduction of the seminiferous tubular lumen, complete depletion of germ cells, germ cell vacuolization and tubular hyalinization.
Ferrín T, Martínez-Nevado E, García J, Toledano-Díaz A, Velázquez R, Alba E, Castaño C, Martinez-Madrid B, Santiago-Moreno J.   +8 more
europepmc   +2 more sources

Histological Characterization and Comparative Transcriptomic Analysis of Gonads During Early Sex Differentiation in the Northern Snakehead (Channa argus)

Animal Research and One Health, EarlyView.
This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun, Donglei Sun, Haishen Wen, Xin Qi, Chao Li, Xiaoyan Zhang, Yun Li   +6 more
wiley   +1 more source

The effect of immobilization stress on the HPG axis (hypothalamic - pituitary - gonad) hormones and the number of spermatogonia [PDF]

Journal of Advanced Biomedical Sciences, 2013
Background & Objective: Stress has different effects on the living organisms. In this study the effect of immobilization stress the HPG (hypothalamic - pituitary - gonad axis) hormones secretion and the number of spermatogonia was studied in adult male ...
ahmad mozafar, mojtaba keshavarz, parvin zareian, Habiboalah Johary, hossein kargar jahromy, Shirzad Hoseini   +5 more
doaj  

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu, I. A. Anjola, L. O. Fasasi, D. P. Fadipe, A. T. Afuye, F. O. Fasanya, O. E. Oke   +6 more
wiley   +1 more source