C3a is one of the proteins formed by the cleavage of complement component 3; the other is C3b. C3a is a 77 residue anaphylatoxin that binds to the C3a receptor (C3aR), a class A G protein …

Aug 1, 2025 · C3a is a small, powerful protein fragment that plays a role in the body’s natural defense system. This fragment is part of a larger network of proteins that work together to …

C3a complement is defined as a proinflammatory mediator derived from the α-chain of C3 following the activation of the classical and alternative pathways of the complement cascade.

Oct 24, 2024 · C3 Complement Blood Test A C3 complement blood test gives your healthcare provider information about your immune system. It shows how parts of your immune system …

C3a is the smaller fragment that is released into the surrounding fluids. C3a can bind to receptors on basophils and mast cells triggering them to release their vasoactive amines (e.g. histamine).

C3a is an anaphylatoxin that triggers a response by stimulating inflammatory cells to release histamine, enzymes, cytokines and other mediators.

Ratajczak J, Reca R, Kucia M, et al. Mobilization studies in mice deficient in either C3 or C3a receptor (C3aR) reveal a novel role for complement in retention of hematopoietic …