نتایج جستجو برای: bystander

تعداد نتایج: 4378  

Journal: :Personality & social psychology bulletin 2008
Clayton R Critcher David A Pizarro

The success of criminal acts can sometimes depend critically on the oversight or negligence of uninvolved bystanders (e.g., someone leaving a first-floor window open). Four studies examined how the contribution of a negligent bystander affects blame for the perpetrator of a crime. Although participants stated that discounting blame for the perpetrator was normatively inappropriate in this conte...

Ahmad Shanei, Masumeh Rezaei Mohammad Kazemi Roghayeh Kamran Samani, Seyed Hossein Hejazi

Introduction: Non-target radiation effects are damages and effects that occur without the need for direct radiation exposure in cells. Bystander signals cause non-targeted irradiation effect that has been defined as radiation responses in which non-irradiated cells exhibit irradiated effects as a result of signals from adjacent irradiated cells. In this study, the bystander ef...

A. Shanei, M. Kazemi, M. Rezaei, R. Kamran Samani, S.H. Hejazi,

Background: The induction of bystander effect via ionizing radiation has been well proven. However, few studies have investigated the bystander effect following non-ionizing radiation, such as ultrasound waves. Here, the bystander effect after different sonication times on human melanoma cell line (A375), is evaluated by assessing cell viability and apoptosis. Materials and Methods: The cells w...

Journal: :Journal of adolescence 2015
Hana Machackova Lenka Dedkova Katerina Mezulanikova

This study examined the bystander effect in cyberbullying. Using self-reported data from 257 Czech respondents who had witnessed a cyberbullying attack, we tested whether provided help decreased with increased number of other bystanders. We controlled for several individual and contextual factors, including empathy, social self-efficacy, empathic response to victimization, and relationship to t...

Journal: :iranian journal of radiation research 0
s.m.j. mortazavi department of medical physics and medical engineering , school of medicine, shiraz university of medical sciences, shiraz, iran n. erfani shiraz institute for cancer research, school of medicine, shiraz university of medical sciences, shiraz, iran h. mozdarani department of medical genetics, faculty of medical sciences, tarbiat modares university, tehran, iran r. azmoonfar radiology department, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran n. shokrpour school of paramedical sciences, shiraz university of medical sciences, shiraz, iran

background: radiation-induced bystander effect is a response which results in damage in non-irradiated cells in response to signals from the irradiated cells. the aim of the present study was to investigate microwave-induced bystander effect from a gsm mobile phone simulator on induction of apoptosis in jurkat cell line. materials and methods: jurkat cells were divided into three groups of non-...

Introduction Radiation-induced bystander effect (RIBE) is a phenomenon in which radiation signals are transmitted from irradiated cells to non-irradiated ones, inducing radiation effects in these cells. RIBE plays an effective role in radiation response at environmentally relevant low doses and in radiotherapy, given its impact on adjacent normal tissues or those far from the irradiated tumor. ...

H. Mozdarani, N. Erfani, N. Shokrpour, R. Azmoonfar, S.M.J. Mortazavi,

Background: Radiation-induced bystander effect is a response which results in damage in non-irradiated cells in response to signals from the irradiated cells. The aim of the present study was to investigate microwave-induced bystander effect from a GSM mobile phone simulator on induction of apoptosis in Jurkat cell line. Materials and Methods: Jurkat cells were divided into three groups of non-...

Journal: :iranian journal of radiation research 0
sh. shirani school of paramedicine, shahid beheshti university of medical sciences, tehran, iran h. mozdarani department of medical genetics, faculty of medical sciences, tarbiat modares university, tehran, iran a. mahmoodzadeh novin medical radiation institute, tehran, iran m. salimi department of medical genetics, medical biotechnology institute, national institute of genetic engineering and biotechnology, tehran, iran

background: radio-adaptive response and bystander effects are known phenomena occurring in cells following exposure to ionizing radiation (ir). in this study we examined possible radio-adaptation of lymphocytes following bystander effects induced by cho-k1 cells. materials and methods: whole blood and cho-k1 cells were cultured in rpmi-1640 complete medium. cells were separately irradiated with...

Abbas Behzad Behbahani Reza Fardid, Zohreh Eftekhari

Introduction: The radiation induced bystander effect (BSE) is the induction of biological changes in unexposed cells, by signals transmitted from bystander cells that cause the spread of radiation toxicity to adjacent or far tissues. In addition, reactive oxygen species (ROS) and reactive nitrogen species (RNS) such as cytokines are involved in mediating mechanisms in bystande...

A Mahmoodzadeh F Pakniyat H Mozdarani H. A Nedaie M Salimi S Gholami

Introduction: Radiation-induced bystander effect (RIBE) is a well-known response associated with the induction of radiation effects in non-irradiated cells via signaling of hit ones. As this so-called phenomenon has been largely investigated in low dose levels, few studies focused on higher dose levels such as grid therapy. Grid therapy or spatially fractionated gri...

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