نتایج جستجو برای: sertoli

تعداد نتایج: 4120  

Journal: :Scandinavian journal of urology and nephrology 1999
S Gravas K Papadimitriou A Kyriakidis

To date, only I I cases of sclerosing Sertoli cell tumors have been reported in the literature, representing a distinctive subtype of Sertoli cell tumor in humans. We present a 12th case with a review of the current urological and pathological literature.

Journal: :Animal reproduction science 2008
Larry Johnson Donald L Thompson Dickson D Varner

Testicular function is under the control of expression and repression of several genes and gene products, and many of these works through Sertoli cells. The capability of Sertoli cells to regulate spermatogenesis is dependent on Sertoli cell functions and Sertoli cell number. Sertoli cell number has long been thought to be stable in adults with no proliferation of Sertoli cells once adult numbe...

Journal: :journal of reproduction and infertility 0

background: the sertoli cells in the testis create unique and safe environment to protect seminiferous tubules from auto antigens and invading pathogens. these cells produce the survival factor of the blood-testis barrier and produce special materials such as androgen binding proteins and contribute to the coordinated action of spermatogenesis. given that the sertoli cells play an essential rol...

Journal: :Journal of andrology 1984
M Galdieri L Monaco M Stefanini

Sertoli cells were cultured alone or with germ cells to evaluate the effect of the association with germ cells on the secretory activity of Sertoli cells. Secretion of androgen-binding protein, which is specifically secreted by Sertoli cells, was measured under several experimental conditions. The following experimental models were utilized: 1) cultures of explants of seminiferous epithelium fr...

Journal: :Journal of cell science 1991
D F Cameron K E Muffly

A Sertoli-spermatid coculture model is described in which a large percentage (greater than 76%) of round spermatids remain viable for 48 h and bind to Sertoli cells. The effects of follicle-stimulating hormone (FSH) and testosterone on spermatid binding (expressed as the spermatid density; SD = the number of spermatids per unit area of Sertoli cell cytoplasm), ultrastructure of the Sertoli-sper...

Journal: :Biology of reproduction 2001
S A McCoard D D Lunstra T H Wise J J Ford

The positive relationship between Sertoli cell number and testicular size emphasizes the importance of determining factors involved in the regulation of the Sertoli cell population. Based on data from other species and indirect evidence in the boar, it is generally accepted that porcine Sertoli cells proliferate rapidly throughout the early postnatal period. However, direct evaluation of Sertol...

Journal: :Molecular human reproduction 2010
K Gassei J Ehmcke M A Wood W H Walker S Schlatt

Sertoli cells undergo a maturation process during post-natal testicular development that leads to the adult-type Sertoli cell, which is required for spermatogenesis. Understanding Sertoli cell maturation is therefore necessary to gain insight into the underlying causes of impaired spermatogenesis and male infertility. The present study characterized the cellular and molecular differentiation of...

Journal: :Biology of reproduction 2002
Michael S Risley Ignatius P Tan Jeanne Farrell

Dye coupling experiments were performed to determine whether the gap junctions connecting Sertoli cells with other Sertoli cells and different germ cell stages in rats showed functional variations. Chop loading of adult rat seminiferous tubules was conducted using fluorescent dextran controls and a variety of low-molecular-weight tracers (lucifer yellow, biotin-X-cadaverine, biotin cadaverine, ...

Journal: :Anticancer research 2012
Eugenio Brunocilla Cristian Vincenzo Pultrone Riccardo Schiavina Christian Rocca Giovanni Passaretti Barbara Corti Giuseppe Martorana

Sertoli cell tumours are very rare testicular tumours accounting for 0.4-1.5% of all testicular neoplasms. In the current report, we present a case of sclerosing Sertoli cell tumour. The histology and clinical features were compared to those of other Sertoli cell tumour subtypes in order to assess if the different subtypes really represent distinct clinical and prognostic entities. The current ...

Journal: :iranian journal of pathology 2014
srinivas ghante nagaraj anitha chalageri manjula vijayanand anjana gupta

sertoli cell tumors of the testis are extremely rare tumors with a heterogeneous pathology. three histological variants have been described: sertoli cell tumor not otherwise specified (nos), large cell calcifying sertoli cell tumor and the sclerosing sertoli cell tumor. the sclerosing sertoli cell tumor described herein is associated with prominent stromal sclerosis. they present as painless sc...

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