Results 91 to 100 of about 11,952,476 (292)

Identification and characterization of stem Leydig cells in the testis [PDF]

open access: yes, 2014
In the testis, several cell types are needed to ensure male fertility, among them the testosterone-producing Leydig cells. Testosterone supports the maturation of sperm and maintains the male phenotype.
Landreh, Luise
core   +1 more source

Quantification of steroid hormones in free‐ranging Apennine wolf Canis lupus italicus hair samples collected post‐mortem

open access: yesWildlife Biology, EarlyView.
After decades of dramatic reductions in their populations, Italian wolves have begun recolonizing parts of their historic range. This growth in populations can lead to potential conflicts with human activities, which remain the main cause of wolf mortality.
Ilaria Troisio   +8 more
wiley   +1 more source

Triphenyltin Chloride Delays Leydig Cell Maturation During Puberty in Rats

open access: yesFrontiers in Pharmacology, 2018
Triphenyltin chloride (TPT) is present in a wide range of human foods. TPT could disrupt testis function as a potential endocrine disruptor of Leydig cells. However, the effect of TPT on pubertal Leydig cell development is still unclear. The objective of
Linchao Li   +13 more
doaj   +1 more source

Bilateral testicular Leydig cell tumor with adrenocortical adenoma: a case report [PDF]

open access: yes, 1995
A case of bilateral testicular Leydig cell tumor with left adrenocortical adenoma in a 27-year-old male is presented. He underwent bilateral radical orchiectomy, and was diagnosed with a malignant Leydig cell tumor.
前田, 浩志   +3 more
core  

Use of novel serum markers in clinical follow-up of Sertoli-Leydig cell turnours [PDF]

open access: yes, 2007
Background: Sertoli-Leyclig cell tumours of the ovary account for only 0.2% of malignant ovarian tumours. Two-thirds of all patients become apparent due to the tumour's hormone production. Methods: A 41-year-old patient (gravida 4, para 4) presented with
Campisi P   +12 more
core   +2 more sources

Testicular histopathology and its association with germ cell numbers, serum concentrations of reproductive hormones, and semen quality

open access: yesAndrology, EarlyView.
Abstract Background It is well‐established that spermatogenesis, semen quality, and reproductive hormones are interlinked. It is, however, less well‐described how various specific testicular histopathologies are linked to reproductive hormones and semen quality.
Gülizar Saritas   +6 more
wiley   +1 more source

Identification of side population cells in mouse primordial germ cells and prenatal testis [PDF]

open access: yes, 2011
In mammals, the stem cells of spermatogenesis are derived from an embryonic cell population called primordial germ cells (PGCs). Spermatogonial stem cells displaying the "side population" (SP) phenotype have been identified in the immature and adult ...
De Felici, Massimo   +6 more
core   +2 more sources

The use of deidentified organ donor testes for research

open access: yesAndrology, EarlyView.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova   +4 more
wiley   +1 more source

Testosterone level, nasal gland volume and Leydig cell morphometry in capybaras (Hydrochoerus hydrochaeris) Níveis de testosterona, volume da glândula nasal e morfometria das células de Leydig em capivaras (Hydrochoerus hydrochaeris)

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2006
The testosterone levels with nasal gland volume and Leydig cell morphometry in sexually mature capybaras were compared using 10 adult capybaras, aging 28 months. Body and testicular weight were 50kg and 28g, respectively. The gonadosomatic index was 0.11&
D.S. Costa, T.A.R. Paula
doaj   +1 more source

Effects of heme oxygenase isozymes on Leydig cells steroidogenesis [PDF]

open access: yes, 2009
In the present study, we demonstrate the expression of heme oxygenase (HO) isozymes, HO-1 and HO-2 (listed as HMOX1 and HMOX2 in the MGI Database), in MA-10 Leydig tumor cells and its effect on steroidogenesis. The well-known HO inducer, hemin, increased
Besio Moreno, Marcos Alberto   +6 more
core   +1 more source

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