[Substance P: immuno-allergic implications].

M Valencia; L Randazzo

PubMed · 1380767

[Substance P: immuno-allergic implications].

Abstract

Substance P is a decapeptide which forms part of the group known as neuropeptides, that is, peptides released by some neurones such as the slow-conducting C fibres and the rapid-conducting A-delta fibres. These neurones belong to the category of non-adrenergic non-cholinergic nerves (NANC), which perform their action through a mechanism known as "axonic reflex". This mechanism is an antidromic stimulation which produces a secretion of neuropeptides, especially substance P. It is known that substance P, once released, is able to exert a number of actions including among others inflammatory and bronchospastic activities and a stimulation of the immunologic system. Other effects attributed to this substance are an increase in capillary permeability and oedema and the perpetuation of certain conditions such as asthma, rhinitis and chronic urticaria or hives. The production, metabolism and actions of this neuropeptide are described.

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Animals Asthma Bronchial Spasm Capsaicin Histamine Release Humans Immunity, Cellular Inflammation Mammals Nerve Fibers Nervous System Neurons Substance P Urticaria Vasodilation Journal Article Review

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M Valencia, L Randazzo. [Substance P: immuno-allergic implications].. https://pubmed.ncbi.nlm.nih.gov/1380767/

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