scholarly journals Exacerbation of collagen induced arthritis by Fcγ receptor targeted collagen peptide due to enhanced inflammatory chemokine and cytokine production

2012 ◽  
pp. 101
Author(s):  
Gabriella Sarmay ◽  
Szarka ◽  
Neer ◽  
Balogh ◽  
Adori ◽  
...  
Keyword(s):  
Cytokine Production ◽  
Collagen Induced Arthritis ◽  
Fc Gamma Receptor ◽  
Collagen Peptide ◽  
Gamma Receptor

scholarly journals Prominent Indomethacin-Induced Enteropathy in Fcgriib Defi-cient lupus Mice: An Impact of Macrophage Responses and Immune Deposition in Gut

2021 ◽  
Vol 22 (3) ◽  
pp. 1377
Author(s):  
Thansita Bhunyakarnjanarat ◽  
Kanyarat Udompornpitak ◽  
Wilasinee Saisorn ◽  
Bhumdhanin Chantraprapawat ◽  
Peerapat Visitchanakun ◽  
...  
Keyword(s):  
Cytokine Production ◽  
High Dose ◽  
Flux Analysis ◽  
Wild Type ◽  
Fc Gamma Receptor ◽  
Serum Cytokines ◽  
Extracellular Flux ◽  
Gamma Receptor ◽  
Gut Leakage ◽  
Gastrointestinal Permeability

A high dose of NSAIDs, a common analgesic, might induce lupus activity through several NSAIDs adverse effects including gastrointestinal permeability defect (gut leakage) and endotoxemia. Indomethacin (25 mg/day) was orally administered for 7 days in 24-wk-old Fc gamma receptor IIb deficient (FcgRIIb-/-) mice, an asymptomatic lupus model (increased anti-dsDNA without lupus nephritis), and age-matched wild-type (WT) mice. Severity of indomethacin-induced enteropathy in FcgRIIb-/- mice was higher than WT mice as demonstrated by survival analysis, intestinal injury (histology, immune-deposition, and intestinal cytokines), gut leakage (FITC-dextran assay and endotoxemia), serum cytokines, and lupus characteristics (anti-dsDNA, renal injury, and proteinuria). Prominent responses of FcgRIIb-/- macrophages toward lipopolysaccharide (LPS) compared to WT cells due to the expression of only activating-FcgRs without inhibitory-FcgRIIb were demonstrated. Extracellular flux analysis indicated the greater mitochondria activity (increased respiratory capacity and respiratory reserve) in FcgRIIb-/- macrophages with a concordant decrease in glycolysis activity when compared to WT cells. In conclusion, gut leakage-induced endotoxemia is more severe in indomethacin-administered FcgRIIb-/- mice than WT, possibly due to the enhanced indomethacin toxicity from lupus-induced intestinal immune-deposition. Due to a lack of inhibitory-FcgRIIb expression, mitochondrial function, and cytokine production of FcgRIIb-/- macrophages were more prominent than WT cells. Hence, lupus disease-activation from NSAIDs-enteropathy-induced gut leakage is possible.

scholarly journals Fc gamma receptor-TLR cross-talk elicits pro-inflammatory cytokine production by human M2 macrophages

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Lisa T. C. Vogelpoel ◽  
Ivo S. Hansen ◽  
Theo Rispens ◽  
Femke J. M. Muller ◽  
Toni M. M. van Capel ◽  
...  
Keyword(s):  
Cross Talk ◽  
Inflammatory Cytokine ◽  
Cytokine Production ◽  
M2 Macrophages ◽  
Fc Gamma Receptor ◽  
Inflammatory Cytokine Production ◽  
Gamma Receptor

scholarly journals Murine autoimmune hemolytic anemia resulting from Fc gamma receptor- mediated erythrophagocytosis: protection by erythropoietin but not by interleukin-3, and aggravation by granulocyte-macrophage colony- stimulating factor

Blood ◽  
1992 ◽  
Vol 79 (11) ◽  
pp. 2960-2964 ◽  
Author(s):  
T Berney ◽  
T Shibata ◽  
R Merino ◽  
Y Chicheportiche ◽  
V Kindler ◽  
...  
Keyword(s):  
Monoclonal Antibody ◽  
Hemolytic Anemia ◽  
Autoimmune Hemolytic Anemia ◽  
Colony Stimulating Factor ◽  
Fc Gamma Receptor ◽  
Interleukin 3 ◽  
Gamma Receptor ◽  
Macrophage Colony Stimulating Factor ◽  
Macrophage Colony ◽  
Stimulating Factor

Abstract We have evaluated the therapeutic activity of recombinant erythropoietin (rEpo), in comparison with recombinant interleukin-3 (rIL-3) and granulocyte-macrophage colony-stimulating factor (rGM-CSF), on a lethal form of acute anemia resulting from Fc gamma receptor- mediated erythrophagocytosis after a single injection (500 micrograms) of a monoclonal anti-mouse red blood cell (MRBC) autoantibody. Continuous perfusion of rEpo before the administration of anti-MRBC monoclonal antibody completely protected animals from death due to anemia with a rapid recovery, while no protection was obtained by rIL-3 perfusion. In contrast, rGM-CSF perfusion markedly accelerated the progression of anemia and the mortality rate. This was found to result from an enhancement of erythrophagocytosis by Kupffer cells and by polymorphonuclear leukocytes that massively infiltrated the livers. Even after the injection of a sublethal dose (100 micrograms) of anti- MRBC monoclonal antibody, rGM-CSF-perfused mice died of a severe form of acute anemia. Furthermore, we have shown that rEpo was able to treat efficiently a spontaneous form of autoimmune hemolytic anemia in a majority of anemic NZB mice, whereas rGM-CSF markedly aggravated anemia. This may be of clinical importance, because GM-CSF administration could exhibit an adverse effect in some autoimmune diseases that involve autoimmune anemia.

scholarly journals Fc-Gamma Receptor Polymorphisms Predispose Patients to Infectious Complications After Liver Transplantation

2015 ◽  
Vol 16 (2) ◽  
pp. 625-633 ◽  
Author(s):  
S. Shimizu ◽  
Y. Tanaka ◽  
H. Tazawa ◽  
S. Verma ◽  
T. Onoe ◽  
...  
Keyword(s):  
Liver Transplantation ◽  
Infectious Complications ◽  
Fc Gamma Receptor ◽  
Gamma Receptor

Linkage Disequilibrium at the Fc Gamma Receptor (Fcγr) Locus and Association of An Fcγr Haplotype with Rheumatoid Arthritis (RA)

2002 ◽  
Vol 103 (s47) ◽  
pp. 33P-33P
Author(s):  
AW Morgan ◽  
B Griffiths ◽  
AF Markham ◽  
P Emery ◽  
JD Isaacs
Keyword(s):  
Rheumatoid Arthritis ◽  
Linkage Disequilibrium ◽  
Fc Gamma Receptor ◽  
Gamma Receptor

Genetic characterization and ligand specificity of the ovine Fc gamma receptor I (ovFcγRІ)

2010 ◽  
Vol 137 (3-4) ◽  
pp. 317-321 ◽  
Author(s):  
Songlin Qiao ◽  
Yunchao Liu ◽  
Jiuliang Zhang ◽  
Suzhen Yang ◽  
Bo Wan ◽  
...  
Keyword(s):  
Genetic Characterization ◽  
Ligand Specificity ◽  
Fc Gamma Receptor ◽  
Gamma Receptor
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