نتایج جستجو برای: bystander effects

تعداد نتایج: 1547620  

2014

Objective: To address acknowledged limitations in the effectiveness of sexual and relationship abuse prevention strategies, practitioners have developed new tools that use a bystander framework (Lonsway et al, 2009). Evaluation of bystander-focused prevention requires measures, specific to the bystander approach that assess changes over time in participants’ attitudes and behaviors. Few measure...

Journal: :Dose-response : a publication of International Hormesis Society 2008
Bobby E Leonard

Prior work has provided incremental phases to a microdosimetry modeling program to describe the dose response behavior of the radio-protective adaptive response effect. We have here consolidated these prior works (Leonard 2000, 2005, 2007a, 2007b, 2007c) to provide a composite, comprehensive Microdose Model that is also herein modified to include the bystander effect. The nomenclature for the m...

2014
Yuka Sakamoto Kiichi Kaminaga Yukiko Kanari Miho Noguchi Akinari Yokoya

It has been recognized that bystander effect is one of the key factors for radiobiological effects, particularly in low-dose region. Although <1% of cell nuclei were actually traversed by an alpha particle, 30% of the cells showed an increased frequency of sister chromatid exchanges at very low dose (0.31 mGy) of alpha particles exposed to a CHO culture dish [1]. Since then, a number of studies...

2016
H. M. Kofahi N. G. A. Taylor K. Hirasawa M. D. Grant R. S. Russell

Individuals infected with hepatitis C virus (HCV) are at high risk of developing progressive liver disease, including cirrhosis and hepatocellular carcinoma (HCC). How HCV infection causes liver destruction has been of significant interest for many years, and apoptosis has been proposed as one operative mechanism. In this study, we employed a tissue culture-adapted strain of HCV (JFH1T) to test...

2013

This annotated bibliography provides advocates and preventionists research on the efficacy of bystander intervention in preventing sexual violence, and provides information on various bystander programs. Some of the articles included are not specific to sexual violence but help shed light on bystander behavior that can be applied to work in sexual violence prevention. The bibliography features ...

Journal: :Cancer research 1999
L Z Rubsam P D Boucher P J Murphy M KuKuruga D S Shewach

The ability of herpes simplex virus type 1 thymidine kinase (HSV-TK)-expressing cells incubated with ganciclovir (GCV) to induce cytotoxicity in neighboring HSV-TK-negative (bystander) cells has been well documented. Although it has been suggested that this bystander cell killing occurs through the transfer of phosphorylated GCV, there is little direct proof that bystander cells can accumulate ...

Journal: :Blood 2012
Hongmei Shen Hui Yu Paulina H Liang Haizi Cheng Richard XuFeng Youzhong Yuan Peng Zhang Clayton A Smith Tao Cheng

Ultimate success of hematopoietic stem cell transplantation (HSCT) depends not only on donor HSCs themselves but also on the host environment. Total body irradiation is a component in various host conditioning regimens for HSCT. It is known that ionizing radiation exerts "bystander effects" on nontargeted cells and that HSCs transplanted into irradiated recipients undergo proliferative exhausti...

Journal: :Journal of interpersonal violence 2016
Amanda E Borsky Karen McDonnell Monique Mitchell Turner Rajiv Rimal

Encouraging bystanders to intervene safely and effectively in situations that could escalate to violence-known as bystander behavior programs-is a growing yet largely untested strategy to prevent dating violence. Using a quasi-experimental design, we evaluate a low-resource, low-intensity intervention aimed at preventing dating violence among college students. The integrated behavioral model (I...

2017
Tünde Szatmári Dávid Kis Enikő Noémi Bogdándi Anett Benedek Scott Bright Deborah Bowler Eszter Persa Enikő Kis Andrea Balogh Lívia N. Naszályi Munira Kadhim Géza Sáfrány Katalin Lumniczky

Radiation-induced bystander effects refer to the induction of biological changes in cells not directly hit by radiation implying that the number of cells affected by radiation is larger than the actual number of irradiated cells. Recent in vitro studies suggest the role of extracellular vesicles (EVs) in mediating radiation-induced bystander signals, but in vivo investigations are still lacking...

2013
Jianyong Xiao Guangxian Zhang Pengxiang Qiu Xijuan Liu Yingya Wu Biaoyan Du Jiefen Li Jing Zhou Jingjing Li Yuhui Tan

The bystander effect is an intriguing phenomenon by which adjacent cells become sensitized to drug treatment during gene therapy with herpes simplex virus thymidine kinase/ganciclovir (HSV-tk/GCV). This effect is reported to be mediated by gap junctional intercellular communication (GJIC), and therefore, we postulated that upregulation of genes that facilitate GJIC may enhance the HSV-tk/GCV by...

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