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Related Concept Videos

Sensory Functions of the Skin01:16

Sensory Functions of the Skin

The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
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Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs01:25

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Asthma is a chronic respiratory condition for which new therapeutic avenues, including anti-inflammatory drugs like mast cell stabilizers and anti-IgE treatments, continue to be developed.
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Cholinergic Receptors: Muscarinic01:25

Cholinergic Receptors: Muscarinic

The pharmacological actions of acetylcholine are elicited via its binding to two families of cholinergic receptors or cholinoceptors, namely, muscarinic and nicotinic receptors. Muscarinic receptors are G protein-coupled receptors and have five subtypes, M1–M5. All mAChR subtypes are activated by acetylcholine and blocked by the antagonist, atropine. 
The subtypes M1, M3, and M5 couple with the Gq subunit and activate the phospholipase C (PLC) activity, mobilizing intracellular Ca2+. Activation...
Allergic Drug Reactions01:27

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Related Experiment Video

Updated: Jul 11, 2026

Isolation of Peritoneum-derived Mast Cells and Their Functional Characterization with Ca2+-imaging and Degranulation Assays
11:31

Isolation of Peritoneum-derived Mast Cells and Their Functional Characterization with Ca2+-imaging and Degranulation Assays

Published on: July 4, 2018

Cutaneous mast cell receptors.

Michihiro Hide1, Yuhki Yanase, Malcolm W Greaves

  • 1Department of Dermatology, Programs for Biomedical Research, Division of Molecular Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan. mhide@hiroshima-u.ac.jp

Dermatologic Clinics
|October 2, 2007
PubMed
Summary
This summary is machine-generated.

Human mast cells exist in two types: MC(T) and MC(TC). These mast cell types differ in proteases, locations, and functions, particularly regarding cutaneous mast cell receptors.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Two distinct human mast cell (MC) subtypes, MC(T) and MC(TC), are recognized.
  • These subtypes exhibit significant differences in granular neutral proteases, tissue distribution, and functional roles.

Purpose of the Study:

  • To delineate the specific differences between MC(T) and MC(TC) mast cells.
  • To focus on the distinct characteristics of cutaneous mast cell receptors.

Main Methods:

  • Comparative analysis of mast cell subtypes.
  • Review of existing literature on mast cell granular proteases, tissue localization, and functions.
  • Examination of cutaneous mast cell receptor expression and signaling pathways.

Main Results:

  • MC(T) and MC(TC) mast cells possess unique granular neutral protease profiles.
  • Distinct tissue localizations contribute to the specialized functions of each mast cell type.
  • Differences in cutaneous mast cell receptors mediate varied cellular responses.

Conclusions:

  • Understanding the heterogeneity of human mast cells is crucial for targeted therapeutic strategies.
  • Cutaneous mast cell receptors represent key differentiators between MC(T) and MC(TC) subtypes.
  • Further research into these receptor differences may reveal novel insights into allergic and inflammatory skin conditions.