The development of Leydig cells in mammals has been widely described as a biphasic pattern with two temporally mature Leydig cell populations, fetal stage followed by the adult generation beginning at puberty. In the present study, mouse Leydig cells were examined for apoptosis during postnatal testis development using electron microscopy and in situ DNA fragmentation by terminal deoxynucleotidyl transferase staining (TdT). Both the morphological study and the DNA fragmentation analysis showed that cellular death by apoptosis did not occur in Leydig cells during the neonatal, prepubertal, puberty, and adult periods. From these results, we suggest that the remaining fetal Leydig cells in the neonatal testis are associated with the involution or degeneration processes. In contrast, in the prepubertal and puberty stages, fragmentation of apoptotic DNA was detected in germ cells present in some seminiferous tubules.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1017/S1431927603030101 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Impact of trypanosomiasis on male camel infertility.
Front Vet Sci
January 2025
Zoology and Entomology Department, Faculty of Science, New Valley University, El-Kharga, Egypt.
Introduction: Blood parasitism is a significant clinical disease that silently undermines the livestock industry, particularly affecting camels. This study aimed to assess the prevalence of in Arabian camels () and its impact on infertility by examining serum protein fractions, lipids, reproductive indices, and the expression of heat shock protein (HSP70) during breeding season.
Methods: A total of 107 male post-pubertal camels, aged between 5 and 10 years, were collected randomly from slaughtering house in Assiut Governorate, Egypt.
Even though Leydig cell tumor (LCT) represents the most common neoplasia among testicular sex cord-stromal tumors (SCSTs), it is a rare condition, comprising 1-2% of all testicular tumors, with a 10% risk of malignancy most commonly located in retroperitoneal lymph nodes. LCTs may demonstrate various clinical manifestations - from asymptomatic intratesticular swelling through nonspecific symptoms such as loss of libido, impotence or infertility, up to feminizing or virilizing syndromes due to hormonal activity of the tumor. This article presents a case of Leydig cell tumor that was associated with azoospermia what have rarely been reported worldwide.
View Article and Find Full Text PDFGetah virus triggers ROS-mediated autophagy in mouse Leydig cells.
Front Microbiol
January 2025
College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.
Introduction: Getah virus (GETV) is a zoonotic virus transmitted via a mosquito-vertebrate cycle. While previous studies have explored the epidemiology and pathogenicity of GETV in various species, its molecular mechanisms remain largely unexplored.
Methods: This study investigated the impact of GETV infection and associated molecular mechanisms on reactive oxygen species (ROS) and autophagy levels in mouse Leydig cells both and .
A determination of the main regulators of necroptosis in testicular tissue under different heat stresses.
J Mol Histol
January 2025
Department of Histology and Embryology, Faculty of Veterinary Medicine, Sivas Cumhuriyet University, Sivas, Türkiye.
Although minimal increases in testicular temperature can compromise spermatogenesis and lead to fertility-related problems, the basic mechanism involved in germ cell destruction as a response to heat stress is still unclear. However, necroptosis is known to regulate a number of physiological and pathological events. This study investigated the role of RIPK1/RIPK3 and MLKL, the main regulators of necroptosis, against different heat stresses in testis tissue.
View Article and Find Full Text PDFTranscriptional Profiling of Testis Development in Pre-Sexually-Mature Hezuo Pig.
Curr Issues Mol Biol
December 2024
College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China.
Spermatogenesis is an advanced biological process, relying on intricate interactions between somatic and germ cells in testes. Investigating various cell types is challenging because of cellular heterogeneity. Single-cell RNA sequencing (scRNA-seq) offers a method to analyze cellular heterogeneity.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!