Dictionary > Histamine

Histamine

Histamine
(Science: biochemistry) formed by decarboxylation of histidine. Potent pharmacological agent acting through receptors in smooth muscle and in secretory systems.
stored in mast cells and released by antigen. (see hypersensitivity). Responsible for the early symptoms of anaphylaxis. Also present in some venoms.
Amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the humane immune system during allergic reactions.A chemical that is produced particularly by leucocytes that results in blood vessels becoming more permeable and in turn lose fluid to the tissues. This can result in localised swelling, and is a direct response to the presence of an antigen.

Last updated on January 13th, 2021

You will also like...

Balanced Diet
A Balanced Diet – Minerals and Proteins

Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..

Lotic community of algal species
Lotic Communities & Algae

Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

Stem
Stems

Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..

Still Water Community Plants
Still Water Community Plants

This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..

Principles of Hormonal Control Systems
Principles of Hormonal Control Systems

Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..

New Zealand - Biodiversity fauna
New Zealand’s Biodiversity

Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..