Knowledge Tree
mast cells
Facts (24)
Sources
The components of the immune system - Immunobiology - NCBI - NIH ncbi.nlm.nih.gov 10 facts
claimMast cells are believed to play a part in protecting mucosal surfaces against pathogens, in addition to their role in orchestrating allergic responses.
claimThe myeloid progenitor cell is the precursor for granulocytes, macrophages, dendritic cells, and mast cells of the immune system.
claimBasophils likely perform functions similar and complementary to those of eosinophils and mast cells.
claimBasophils likely have functions similar and complementary to those of eosinophils and mast cells.
claimMast cells are believed to play a part in protecting mucosal surfaces against pathogens, in addition to their role in orchestrating allergic responses.
claimThe myeloid progenitor is the precursor cell type for granulocytes, macrophages, dendritic cells, and mast cells of the immune system.
claimMacrophages and mast cells complete their differentiation in tissues, where they function as effector cells in host defense and initiate inflammation.
claimMast cells are exocytic cells that orchestrate defense against parasites, trigger allergic inflammation, and recruit eosinophils and basophils.
claimMast cells differentiate in tissues and primarily reside near small blood vessels, where they release substances that affect vascular permeability upon activation.
claimMast cells reside mainly near small blood vessels and, when activated, release substances that affect vascular permeability.
3. The Innate Immune System - Immunopaedia immunopaedia.org.za 10 facts
claimBasophils are granulocytes derived from bone marrow precursor cells that are released into the blood circulation and share similar characteristics and functions with mast cells.
claimWithin minutes of activation, mast cells generate lipid-derived prostaglandin D2 (PGD2) and leukotrienes (LTC4, LTD4, and LTE4).
claimWithin hours of activation, mast cells synthesize chemokines (CCL3, CCL4, and CCL5) and cytokines (TNF-α, IL-4, IL-5, and IL-6).
claimMast cells originate in the bone marrow and circulate as CD34+ progenitor cells, differentiating into mature mast cells only after entering tissues under the influence of cytokines.
claimUpon activation, mast cells immediately extrude granule-stored preformed mediators including histamine, tryptase, chymase, and carboxypeptidase.
claimMast cells are important in innate immune responses because they detect infectious agents and initiate acute inflammatory responses by secreting mediators.
claimMast cells develop from bone marrow-derived progenitor cells that are primed with stem cell factor (SCF) and continue maturation and differentiation in peripheral tissue.
claimMast cells are distributed throughout the body as resident cells, particularly near blood vessels, nerves, and mucosal surfaces.
claimMast cells recognize microbial pathogen-associated molecular patterns (PAMPs) through Toll-like receptors (TLR1, TLR2, TLR4, and TLR6) and recognize complement-derived molecules (iC3b) and anaphylatoxins (C4a, C3a, and C5a) through their respective receptors.
claimMast cells are classified into two subsets based on enzyme content: MC(T) cells, which contain tryptase, and MC(TC) cells, which contain both tryptase and chymase.
Pro-Inflammatory Cytokines Overview | Thermo Fisher Scientific - US thermofisher.com 2 facts
claimIL-6 is produced by monocytes, fibroblasts, and endothelial cells, and upon stimulation, it is secreted by macrophages, T cells, B cells, mast cells, glial cells, eosinophils, keratinocytes, and granulocytes.
referenceIL-5 is classified as an adaptive immunity cytokine, is produced by Th2 cells and mast cells, binds to CDw125 and CD131 receptors, targets eosinophils and B cells, and functions in B-cell proliferation and maturation, and the stimulation of IgA and IgM production.
What are Cytokines? Types & Function - Cleveland Clinic my.clevelandclinic.org Jan 3, 2023 1 fact
claimImmune cells that release cytokines include macrophages, dendritic cells, lymphocytes (T and B lymphocytes), monocytes, neutrophils, basophils, eosinophils, and mast cells.
Recent advances in molecular mechanisms of skin wound ... frontiersin.org 1 fact
referenceKomi DEA, Khomtchouk K, and Santa Maria PL published 'A review of the contribution of mast cells in wound healing: involved molecular and cellular mechanisms' in Clinical Reviews in Allergy & Immunology, discussing the role of mast cells in wound healing.