نتایج جستجو برای: sscs

تعداد نتایج: 935  

ابوالحسنی, فرید, خانه‌زاد, مریم, راگردی کاشانی, ایرج, علی اکبری, فرشته, کروجی, سید مرتضی,

Background: Spermatogenesis is a complex and highly organized process of proliferation and differentiation of spermatogonial stem cells. Spermatogonial stem cells (SSCs) as a unique stem cell have the potential to self-renewal, differentiation and transmit genetic information to the next generation and play a vital role in maintaining fertility. Sertoli cells as the only somatic cells within th...

2012
Kyle C. Caires Jeanene de Avila Derek J. McLean

A balance between self-renewal and differentiation of spermatogonial stem cells (SSCs) is required to maintain sperm production throughout male life. The seminiferous epithelium is organized into stages of spermatogenesis based on the complement of germ cell types within a tubular section of the testis. The stages exist in close physical proximity and foster diverse phases of germ cell developm...

2007
Morteza Koruji Mansoureh Movahedin Seyed Javad Mowla Hamid Gourabi

Background: The basis of spermatogenesis is the spermatogonial stem cells (SSCs). The concentration of SSCs is very small. However, a system that supports the proliferation and maintenance of SSCs in vitro could be used to preserve and expand SSCs numbers as well as increase success in transplantation. It is a new avenue to restore spermatogenesis in azoospermia subjects. Objective: Proliferati...

Journal: :Synapse 1993
J I Nagy T Yamamoto L M Jordan

C-terminals can be distinguished at the ultrastructural level from other types of nerve endings on motoneurons by their prominent and regularly occurring postsynaptic specializations termed subsurface cisterns (SSC). We have previously shown (Yamamoto et al., 1991) that an antibody directed against a sequence within the gap junction protein connexin32 immunolabels these motoneuronal SSCs and ca...

Journal: :General dentistry 2017
Walker Clark Matthew Geneser Arwa Owais Michael Kanellis Fang Qian

The purpose of this retrospective observational study was to assess success rates, both clinical and radiographic, of stainless steel crowns (SSCs) placed on primary molars using the Hall technique. A retrospective analysis was performed on recorded data of patients with any primary molar treated with an SSC that was placed using the Hall technique at the University of Iowa College of Dentistry...

Journal: :IEEE Solid-State Circuits Magazine 2023

The IEEE Solid-State Circuits Society (SSCS) University of Science and Technology China (USTC) Student Branch Chapter (SBC) won the SSCS Year award. award was received by Advisor Prof. Fujiang Lin during Chair Luncheon at International Conference, on 21 February 2023.

Journal: :Cell stem cell 2013
Hiroko Morimoto Kazumi Iwata Narumi Ogonuki Kimiko Inoue Ogura Atsuo Mito Kanatsu-Shinohara Takeshi Morimoto Chihiro Yabe-Nishimura Takashi Shinohara

Reactive oxygen species (ROS) generation is implicated in stem cell self-renewal in several tissues but is thought to be detrimental for spermatogenesis as well as spermatogonial stem cells (SSCs). Using cultured SSCs, we show that ROS are generated via the AKT and MEK signaling pathways under conditions where the growth factors glial cell line-derived neurotrophic factor and fibroblast growth ...

2016
Makiko Yamada Letizia De Chiara Marco Seandel

Spermatogonial stem cells (SSCs) propagate mammalian spermatogenesis throughout male reproductive life by continuously self-renewing and differentiating, ultimately, into sperm. SSCs can be cultured for long periods and restore spermatogenesis upon transplantation back into the native microenvironment in vivo. Conventionally, SSC research has been focused mainly on male infertility and, to a le...

2014
Wenhai Xie Hu Wang Ji Wu

The existence of mammalian female germline stem cells (FGSCs) indicates that mammalian ovaries possess germline stem cells analogous to testis, and continue to produce gametes postnatally, which provides new insights into female fertility. In this study, we compared the morphological and molecular characteristics between FGSCs and spermatogonial stem cells (SSCs) by analysis of morphology, immu...

2012
Vitor E Valenti Luiz Carlos de Abreu Monica A Sato Celso Ferreira Fernando Adami Fernando LA Fonseca Valdelias Xavier Moacir Godoy Carlos B Monteiro Luiz Carlos M Vanderlei Paulo HN Saldiva

BACKGROUND Cigarette exposure increases brain oxidative stress. The literature showed that increased brain oxidative stress affects cardiovascular regulation. However, no previous study investigated the involvement of brain oxidative stress in animals exposed to cigarette and its relationship with cardiovascular regulation. We aimed to evaluate the effects of central catalase inhibition on baro...

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