Histamine is a monoamine neurotransmitter. Histamine is derived from the decarboxylation of the amino acid histidine, a reaction catalyzed by the enzyme L -histidine decarboxylase. It is a hydrophilic vasoactive amine.

Histamine | C5H9N3 | CID 774 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

2018年4月16日 · Histamine is an organic triamine that is a strong vasodilator found in blood and most bodily tissues. It is involved in inflammatory and immune responses. Histamine is stored primarily in mast cells and basophils; it is released in response to tissue damage caused by injury, infection, or allergens.

4 天之前 · Histamine, a key molecule in the body's immune response, is often associated with proteins that are intricately linked to DNA. This phenomenon is particularly intriguing as it suggests a complex relationship between histamine and genetic material. The question of why histamine proteins are wrapped in DNA opens up a fascinating exploration of ...

2023年5月1日 · Histamine is one of the earliest identified mediators of allergy. Researchers identified its role in the modulation of allergic reactions as early as 1932. Since then, research has determined histamine to be a mediator of autoimmune conditions, gastric acid secretion, and hematopoiesis.[1]

2025年1月8日 · Histamine is chemically classified as an amine, an organic molecule based on the structure of ammonia (NH 3). It is formed by the decarboxylation (the removal of a carboxyl group) of the amino acid histidine.

Histamine (C5H9N3, molecular weight 111.15 g/mol) is a well-studied endogenous biogenic amine composed of an imidazole ring attached to an ethylamine side chain. It has a limited half-life of a few minutes within tissues and in circulation.

Histamine is a chemical your immune system releases. It’s mainly known for its role in causing allergy symptoms. But it has other important functions, like regulating your sleep-wake cycle and cognitive function. Antihistamines are a common medication that can manage histamine levels.

2023年10月2日 · Histamine is an amine involved in immune responses all over your body. Amines are made of nitrogen atoms bonded with other atoms — in this case, with hydrogen — and can bond to many other cells...

As a physiological mediator, histamine is best known as an endogenous stimulant of gastric secretion. Histamine is also released from mast cells and basophils by antigens, certain peptides and small basic drugs. In addition, histamine participates in inflammation and in the regulation of immune responses, but these functions are less well ...