نتایج جستجو برای: bystander

تعداد نتایج: 4378  

2016
Chelsey Bowman

Sexual violence is a major problem on college campuses. To combat sexual violence, bystander training has been identified as a primary prevention strategy. The NCAA has highlighted student-athletes as potential key bystanders on campuses. However, no evidence-based bystander programs exist to specifically train male and female studentathletes despite research indicating that student-athletes ma...

2014
Swaminathane Ramkumar

Methods This is a prospective & observational study. The total sample (120) was divided into two groups, Test (60) and Control (60). Both Test & Control group (Witnessed & Unwitnessed) were contacted over telephone, their psychological state was assessed using a standard stress assessment scale, The Impact of Event Scale (IES) by M. Horowitz et al. A structured proforma was prepared to record t...

Journal: :Current molecular pharmacology 2011
Tom K Hei Hongning Zhou Yunfei Chai Brian Ponnaiya Vladimir N Ivanov

Generations of students in radiation biology have been taught that heritable biological effects require direct damage to DNA. Radiation-induced non-targeted/bystander effects represent a paradigm shift in our understanding of the radiobiological effects of ionizing radiation in that extranuclear and extracellular effects may also contribute to the biological consequences of exposure to low dose...

Journal: :Aquatic toxicology 2012
Chunsheng Liu Wei Yan Bingsheng Zhou Yongyong Guo Hongling Liu Hongxia Yu John P Giesy Jianghua Wang Guangyu Li Xiaowei Zhang

This study was conducted to evaluate possible bystander effects induced by the model chemical 6-propyl-2-thiouracil (PTU) on melanin synthesis. Zebrafish (Danio rerio) embryos were treated with PTU by either microinjection exposure, via waterborne exposure or indirectly through bystander exposure. Melanin content, related mRNA and protein expression were examined at the end of exposure (36 h po...

2018
David G Tempel N. Patrik Brodin Wolfgang A Tomé

Currently, interactions between voxels are neglected in the tumor control probability (TCP) models used in biologically-driven intensity-modulated radiotherapy treatment planning. However, experimental data suggests that this may not always be justified when bystander effects are important. We propose a model inspired by the Ising model, a short-range interaction model, to investigate if and wh...

Journal: :Histology and histopathology 2003
T W Nicholas S B Read F J Burrows C A Kruse

Connexins are proteins that form gap junctions between cells in various mammalian tissues. Because of their role in intercellular communication, connexins are important in the bystander cell death seen in Herpes simplex virus-thymidine kinase (HSV-TK) gene therapy for brain tumors. A selective review of connexin transduction/transfection studies with particular emphasis to central nervous syste...

Journal: :Resuscitation 2011
B K Kanstad S Aa Nilsen K Fredriksen

BACKGROUND Early bystander cardiopulmonary resuscitation (CPR) is essential for survival from out-of-hospital cardiac arrest (OHCA). Young people are potentially important bystander CPR providers, as basic life support (BLS) training can be distributed widely as part of the school curriculum. METHODS Questionnaires were distributed to nine secondary schools in North Norway, and 376 respondent...

Journal: :Proceedings. Biological sciences 2002
Ryan L Earley Lee Alan Dugatkin

Aggressive contests probably occur in networking environments where information about fighting ability is conveyed both to an opponent and to individuals peripheral to the fight itself, the bystanders. Our primary aim was to investigate the relative influences of eavesdropping and prior social experience on the dynamics of aggressive contests in Xiphophorus helleri. A bystander's ability to wit...

Journal: :Mutation research 2011
S Chen Y Zhao W Han S K Chiu L Zhu L Wu K N Yu

Mammalian cells respond to ionization radiation by sending out extracellular signals to affect non-irradiated neighboring cells, which is referred to as radiation induced bystander effect. In the present paper, we described a phenomenon entitled the "rescue effects", where the bystander cells rescued the irradiated cells through intercellular signal feedback. The effect was observed in both hum...

Journal: :Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2012
Jaime Gómez-Millán Iana Suly Santos Katz Virgínea de Araujo Farias Jose-Luis Linares-Fernández Jesús López-Peñalver Gustavo Ortiz-Ferrón Carmen Ruiz-Ruiz Francisco Javier Oliver José Mariano Ruiz de Almodóvar

PURPOSE To examine direct and bystander radiation-induced effects in normal umbilical-cord stromal stem cell (HCSSC) lines and in human cancer cells. MATERIALS AND METHODS The UCSSC lines used in this study were obtained in our laboratory. Two cell lines (UCSSC 35 and UCSSC 37) and two human melanoma skin-cancer cells (A375 and G361) were exposed to ionizing radiation to measure acute radiati...

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