Results 51 to 60 of about 4,930,458 (259)
The Anatomical Record, EarlyView.Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga +4 more
wiley +1 more source
Leydig cell hyperplasia and Leydig cell tumour in postmenopausal women: report of two cases
Gynecological Endocrinology, 2012 Leydig cell hyperplasia and Leydig cell tumours of the ovary are rare. We present two cases in which patients had increased blood levels of testosterone and frank hirsutism. Imaging showed minimal abnormalities. After adrenal disease had been ruled out, they underwent a bilateral oophorectomy.
Hofland, Maarten +4 more
openaire +3 more sources
Insights into the Development of the Adult Leydig Cell Lineage from Stem Leydig Cells [PDF]
Frontiers in Physiology, 2017 Adult Leydig cells (ALCs) are the steroidogenic cells in the testes that produce testosterone. ALCs develop postnatally from a pool of stem cells, referred to as stem Leydig cells (SLCs). SLCs are spindle-shaped cells that lack steroidogenic cell markers, including luteinizing hormone (LH) receptor and 3β-hydroxysteroid dehydrogenase. The commitment of
Ye, Leping +4 more
openaire +3 more sources
RiboTag analysis of actively translated mRNAs in Sertoli and Leydig cells in vivo. [PDF]
PLoS ONE, 2013 Male spermatogenesis is a complex biological process that is regulated by hormonal signals from the hypothalamus (GnRH), the pituitary gonadotropins (LH and FSH) and the testis (androgens, inhibin).
Elisenda Sanz +8 more
doaj +1 more source
The Anatomical Record, EarlyView.Abstract The organization and function of reptilian excurrent ducts remain poorly characterized, particularly in Neotropical snakes. We provide the first integrative morphological, histochemical, immunohistochemical, and ultrastructural analysis of the proximal post‐testicular ducts of Crotalus durissus across reproductive stages.
Flávia Cappuccio de Resende +9 more
wiley +1 more source
Nature CommunicationsTesticular fetal Leydig cells produce androgens essential for male reproductive development. Impaired fetal Leydig cell differentiation leads to differences of sex development including hypospadias, cryptorchidism, and infertility.
Martín Andrés Estermann +7 more
doaj +1 more source
PATHOMORPHOLOGICAL FEATURES OF TESTICULAR TUMORS IN DOGS
Ukrainian Journal of Veterinary Sciences, 2020 The research was conducted to study the morphological, clinical, and macroscopic characteristics of the different histological types of canine testicular tumors.
N. B. KOLYCH
doaj +1 more source
An insight into metastatic Leydig cell tumors: A case report
SAGE Open Medical Case Reports, 2023 Sex cord-stromal tumors comprise approximately 5% of all testicular tumors, while the remainder are of germ cell origin. Leydig cell tumors are the most common subtype of testicular sex cord-stromal tumors and account for 1%–2% of all testicular tumors ...
Jerel David +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 +11 more
wiley +1 more source
A Sertoli-Leydig ovarian tumor presenting as ovarian torsion: A case report
Case Reports in Women's HealthTorsion occurs as a complication in 10% of cases of ovarian tumors. It predominantly occurs in benign ones, while malignant tumors are less prone to torsion.
Samia Tligui +6 more
doaj +1 more source