نتایج جستجو برای: mediated immunity by cytokines modification in intra

تعداد نتایج: 18159315  

2014
Marcela Lopez-Medina Araceli Perez-Lopez Celia Alpuche-Aranda Vianney Ortiz-Navarrete

Although B cells and antibodies are the central effectors of humoral immunity, B cells can also produce and secrete cytokines and present antigen to helper T cells. The uptake of antigen is mainly mediated by endocytosis; thus, antigens are often presented by MHC-II molecules. However, it is unclear if B cells can present these same antigens via MHC-I molecules. Recently, Salmonella bacteria we...

2013
Shu Zhu Doron Regev Makiko Watanabe Danielle Hickman Nissin Moussatche Desyree Murta Jesus Shannon M. Kahan Sawsan Napthine Ian Brierley Robert N. Hunter Divya Devabhaktuni Melissa K. Jones Stephanie M. Karst

Whether or not primary norovirus infections induce protective immunity has become a controversial issue, potentially confounded by the comparison of data from genetically distinct norovirus strains. Early human volunteer studies performed with a norovirus-positive inoculum initially led to the conclusion that primary infection does not generate long-term, protective immunity. More recently thou...

2017
Peng-Yu Chang Bo-Yin Zhang Shuang Cui Chao Qu Li-Hong Shao Tian-Kai Xu Ya-Qin Qu Li-Hua Dong Jin Wang

Microvascular injury initiates the pathogenesis of radiation enteropathy. As previously demonstrated, the secretome from mesenchymal stem cells contains various angiogenic cytokines that exhibited therapeutic potential for ischemic lesions. As such, the present study aimed to investigate whether cytokines derived from mesenchymal stem cells can repair endothelial injuries from irradiated intest...

2000
J. John H. Pandha A. G. Dalgleish

There are many complex relationships between tumour cells and effector cells in the immune system. These interactions are controlled predominantly by cytokines, either within the tumour environment, or systemically where the effector cells may be stimulated as a response to the presence of the tumour. Favourable clinical responses in cancer patients have been shown to be associated with enhance...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم انسانی 1391

tennessee williams (1911-1983), the modern american dramatist, had his own unique school of dramaturgy. the dramas which he depicted are populated by characters who are lonely, desperate, in anxiety, alienated and in one word lost. they face challenges which they may overcome or not, through the choices they make. all these moods and conditions are clearly seen and explained in the theory of ex...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1390

one very decisive factor in students’ academic destiny is the result they get at final term examinations. because of its importance, both students and teachers are curiously anxious about them. as normally it is the case, these final term tests are prepared hurriedly in short time by teachers which result in students’ dissatisfaction, complaining on how the test was different from their expecta...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1393

the purpose of the present study was to investigate the relationship between fear of negative evaluation (fne) and communication strategies (css) among iranian efl learners. it was aimed to examine the differences in the use of communication strategies between speakers with high or low degree of fear of negative evaluation. the current study was a case study consisting of 10 english learners at...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و زبانهای خارجی 1392

abstract i the purpose of this study was to launch a thorough investigation concerning the possibility of differing orientations to the writing proficiency construct by native and non-native english speaking teacher raters. it mainly revolved around the international english language testing system (ielts) that is widely administered and employed as a measure of general proficiency in englis...

Journal: :Journal of immunology 2010
Zofia M Prokopowicz Frederick Arce Rafal Biedroń Cheryl L-L Chiang Marta Ciszek David R Katz Maria Nowakowska Szczepan Zapotoczny Janusz Marcinkiewicz Benjamin M Chain

The production of hypochlorous acid (HOCl) is a characteristic of granulocyte activation, a hallmark of the early phase of innate immune responses. In this study, we show that, in addition to its well-established role as a microbicide, HOCl can act as a natural adjuvant of adaptive immunity. HOCl enhances the T cell responses to the model Ag OVA, facilitating the processing and presentation of ...

Journal: :Seminars in Immunopathology 2010

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