Results 51 to 60 of about 1,255,490 (262)

p38MAPK, ERK and PI3K signaling pathways are involved in C5a-primed neutrophils for ANCA-mediated activation. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUND: The complement system is one of the important contributing factors in the development of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV).
Jian Hao   +4 more
doaj   +1 more source

Atlas‐Guided CD55‐Enriched Neutrophil Extracellular Vesicles for Complement–Macrophage Modulation in Diabetic Wounds

open access: yesAdvanced Science, EarlyView.
ABSTRACT Diabetic wounds are characterized by persistent inflammation and impaired immune resolution, yet the therapeutic translation of single‐cell atlases into rational immunomodulatory strategies remains limited. Here, integration of diabetic‐wound single‐cell transcriptomic datasets identifies a neutrophil subpopulation enriched in cluster of ...
Tairong Cui   +12 more
wiley   +1 more source

Functional roles for C5a receptors in sepsis [PDF]

open access: yesNature Medicine, 2008
The function of the C5a receptors, C5ar (encoded by C5ar) and C5l2 (encoded by Gpr77), especially of C5l2, which was originally termed a 'default receptor', remains a controversial topic. Here we investigated the role of each receptor in the setting of cecal ligation and puncture-induced sepsis by using antibody-induced blockade of C5a receptors and ...
Daniel, Rittirsch   +12 more
openaire   +2 more sources

Complement C5a acts as molecular adjuvant in fish by enhancing antibody response to soluble antigen

open access: yes, 2014
C5a, the most potent anaphylatoxin generated during complement activation, has important proinflammatory actions and has also been shown to enhance antigen-specific antibody response in mammals, thereby acting as a molecular adjuvant.
Li, Jun   +4 more
core   +1 more source

Higher Complement C4 Gene Copy Number Constitutes a Shared Genetic Risk Factor for Giant Cell Arteritis and IgA Vasculitis

open access: yesArthritis &Rheumatology, EarlyView.
Objective Low copy number (CN) of complement C4 isoforms and high CN of retroviral HERV‐K elements are known risk factors for many immune‐mediated inflammatory diseases (IMIDs), often showing sex‐biased effects. Here, we assessed whether CN variation within the C4 gene contributes to giant cell arteritis (GCA) and IgA vasculitis (IgAV), two complex ...
Laura Martínez‐Gutiérrez   +295 more
wiley   +1 more source

Cloning and characterization of the guinea pig C5a anaphylatoxin receptor: interspecies diversity among the C5a receptors [PDF]

open access: yesInternational Immunology, 1998
The anaphylatoxin C5a receptor (C5aR, CD88 in man) plays a prominent role in mediating inflammatory and host defense processes. Direct evidence of C5aR involvement in host defense mechanisms was demonstrated recently using C5aR knockout mice. Mice deficient in C5aR were unable to clear intrapulmonary-instilled bacteria. The guinea pig system is perhaps
Y, Fukuoka   +3 more
openaire   +2 more sources

Differential Expression of the C5a Receptor and Complement Receptors 1 and 3 after LPS Stimulation of Neutrophils and Monocytes

open access: yes, 2004
Animal experiments recently suggested that administration of anti-C5a, anti-C5a receptor or soluble complement receptor type-1 may be of value in the treatment of septic shock.
Håkansson, Lena   +7 more
core   +1 more source

Complement Activation Linked to Type II Interferon Signaling in Still Disease

open access: yesArthritis &Rheumatology, EarlyView.
Objective Still disease (SD) is an autoinflammatory syndrome characterized by innate immune dysregulation. Although complement can drive inflammation, its involvement in SD remains to be defined. Thus, we aimed to assess complement activation in SD. Methods Complement was assessed using transcriptomic, proteomic, and in vitro approaches. RNA sequencing
Freya M. C. H. Huijsmans   +115 more
wiley   +1 more source

Chimeric Receptors of the Human C3a Receptor and C5a Receptor (CD88) [PDF]

open access: yesJournal of Biological Chemistry, 1999
Chimeras were generated between the human anaphylatoxin C3a and C5a receptors (C3aR and C5aR, respectively) to define the structural requirements for ligand binding and discrimination. Chimeric receptors were generated by systematically exchanging between the two receptors four receptor modules (the N terminus, transmembrane regions 1 to 4, the second ...
T, Crass   +7 more
openaire   +2 more sources

Characterisation of C5a receptor agonists from phage display libraries

open access: yes, 2003
C5a des-Arg74 has a 10- to 100-fold lower receptor binding affinity than intact C5a and is only a partial agonist. We have used phage display selection from randomly mutated C5a des-Arg74 libraries to isolate variant proteins that can activate C5a ...
Monk, Peter N.   +2 more
core   +1 more source

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