نتایج جستجو برای: fcγriia

تعداد نتایج: 293  

2006
Renu Saxena Meganathan Kannan Firdos Ahmad Sarfraz Ahmad Shailaja Kale

We did the pilot study, in an attempt to determine the prevalence of HIT in Indians and determine its relationship, if any, to FcγRIIa polymorphism, the occurrence of heparin-induced thrombocytopenia (HIT) was investigated in 33 Indian patients undergoing cardiovascular surgery (CVS) who received unfractionated heparin (UFH). Platelet counts were performed prior to the initiation of UFH therapy...

آسمار , مهدی, حسن جانی روشن , محمدرضا, حسینی خواه , زهرا, رفیعی , علیرضا, سلطانی , حسن علی, عجمی , ابوالقاسم, قاسمیان , رویا, میرابی عراز, محمد,

Background and purpose: Brucellosis is a major bacterial zoonosis of global importance. Effective host defence against brucella depends on immunoglobulin G-mediated phagocytosis of the bacteria and it has been shown that the FC RIIA polymorphism (FCγ RIIA-R131 vs FCγ RIIA –H131) determines the capacity of immunoglobulin G-mediated phagocytosis via this receptor. The aim of this study was to e...

2017
Fatina I. Fadel Manal F. Elshamaa Ahmed Salah Eman A. Elghoroury Safaa Abd El-Rahman Mona Hamed Ibrahim Solaf Kamel

Introduction Fc gamma receptor (FcγR) IIa is considered the most widely distributed of the three classes of Fc receptors, and it expresses an allelic polymorphism. This type of polymorphism may modify the immune response and may be an important factor for some diseases. The aim of the study reported herein was to evaluate the association between the FcγRIIa polymorphism and susceptibility to bo...

Journal: :The Journal of clinical investigation 2017
Hiroshi Nishi Kazuhiro Furuhashi Xavier Cullere Gurpanna Saggu Mark J Miller Yunfeng Chen Florencia Rosetti Samantha L Hamilton Lihua Yang Spencer P Pittman Jiexi Liao Jan M Herter Jeffrey C Berry Daniel J DeAngelo Cheng Zhu George C Tsokos Tanya N Mayadas

The kidney glomerular capillaries are frequent sites of immune complex deposition and subsequent neutrophil accumulation in post-infectious and rapidly progressive glomerulonephritis. However, the mechanisms of neutrophil recruitment remain enigmatic, and there is no targeted therapeutic to avert this proximal event in glomerular inflammation. The uniquely human activating Fc receptor FcγRIIA p...

2016
Callum N. Watson Steven W. Kerrigan Dermot Cox Ian R. Henderson Steve P. Watson Mònica Arman

Gram-negative Escherichia coli cause diseases such as sepsis and hemolytic uremic syndrome in which thrombotic disorders can be found. Direct platelet-bacterium interactions might contribute to some of these conditions; however, mechanisms of human platelet activation by E. coli leading to thrombus formation are poorly understood. While the IgG receptor FcγRIIA has a key role in platelet respon...

Journal: :Blood 2012
Jeroen den Dunnen Lisa T C Vogelpoel Tomasz Wypych Femke J M Muller Leonie de Boer Taco W Kuijpers Sebastiaan A J Zaat Martien L Kapsenberg Esther C de Jong

Dendritic cells (DCs) are essential in inducing adaptive immune responses against bacteria by expressing cytokines that skew T-cell responses toward protective Th17 cells. Although it is widely recognized that induction of these cytokines by DCs involves activation of multiple receptors, it is still incompletely characterized which combination of receptors specifically skews Th17-cell responses...

2007
Sayyed Hamid Hashemi Mehrdad Hajilooi Mojgan Mamani Shirin Jamal-Omidi

Recent evidence suggests that certain Fc gamma receptor (FcγR) alleles are genetic risk factors for infectious diseases. In this study, we evaluated FcγRIIa polymorphism in patients with brucellosis. In a casecontrol study, the frequency of two alleles and three genotypes for FcγRIIa were measured by PCR in 150 patients with brucellosis and 125 healthy controls. The H131 and R131 alleles were f...

Journal: :research in molecular medicine 0
zahra hosseini khah molecular and cell biology research center, mazandaran university of medical science, mazandaran, iran zohreh bahadori department of microbiology, faculty of basic sciences, islamic azad university, tehran, iran alireza rafiei molecular and cell biology research center, mazandaran university of medical science, mazandaran, iran mehrdad hajilooi department of immunology, faculty of medicince, hamadan university of medical sciences, hamadan, iran

background: brucellosis is the major bacterial zoonoses of global importance caused by brucella spps. fcγriia receptor plays a central role in phagocytosis of igg2-opsonized bacteria. fcγriia exhibits allelic polymorphisms with different capacities for binding igg2 and phagocytosis. cells expressing fc γ riia-h131, bind more efficiently to complexes of igg2 than those expressing the fc γ rii a ...

Journal: :Journal of the American College of Cardiology 2018

2017
Callum N. Watson Steven W. Kerrigan Dermot Cox Ian R. Henderson Mònica Arman Steve P. Watson

Gram-negative Escherichia coli cause diseases such as sepsis and hemolytic uremic syndrome in which thrombotic disorders can be found. Direct platelet–bacterium interactions might contribute to some of these conditions; however, mechanisms of human platelet activation by E. coli leading to thrombus formation are poorly understood. While the IgG receptor FcγRIIA has a key role in platelet respon...

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