For Histamine we have terms and definitions in 13 topics. The topics are Allergy, Allergy and Asthma, Beauty, Cancer, Canine, Female Health, Health, Health and Beauty, Horse Health, Human Body, Medical, Nutrition and Psychoactives.

Histamine (Allergy)

(his-ta-mean) a chemical that is made by mast cells during an allergic reaction.

Histamine (Allergy and Asthma)

A chemical present in cells throughout the body that is released during an allergic reaction and one of the substances responsible for the symptoms of inflammation.

Histamine (Beauty)

Substance released by mast cells; important in the inflammatory response. Triggers vascular changes, including dilation of the blood vessels. A chemical released during an allergic reaction.

Histamine (Cancer)

A naturally occurring substance that is released by the immune system after being exposed to an allergen. When you inhale an allergen, mast cells located in the nose and sinus membranes release histamine. Histamine then attaches to receptors on nearby blood vessels, causing them to enlarge (dilate). Histamine also binds to other receptors located in nasal tissues, causing redness, swelling, itching, and changes in the secretions.

Histamine (Canine)

A physiologically active amine, C5H9N3, found in plant and animal tissue and released from mast cells as part of an allergic reaction in humans. It stimulates gastric secretion and causes dilation of capillaries, constriction of bronchial smooth muscle, and decreased blood pressure.

Histamine (Female Health)

Allergic people produce this potent inflammatory chemical when they come into contact with the aggravating substance, such as pollen, animal dander or dust mites. Triggers most of the symptoms commonly associated with allergies.

Histamine (Health)

A chemical present in cells throughout the body that is released during an allergic reaction and one of the substances responsible for the symptoms of inflammation.

Histamine (Health and Beauty)

Substance released by mast cells; important in the inflammatory response. Triggers vascular changes, including dilation of the blood vessels. A chemical released during an allergic reaction.

Histamine (Horse Health)

Powerful molecule produced by mast cells and basophils, that is responsible for an army of unpleasant effects seen in allergy; it causes contraction of smooth muscle and dilation of capillaries and increases the heart rate, among other actions.

Histamine (Human Body)

a hormone/chemical transmitter involved in local immune responses. When released, histamine causes blood vessels to dilate and increase in permeability, allowing fluid and cells of the immune system to leak from the bloodstream. In normal cases, this allows cells to migrate to the site of injury or infection, but in an allergic reaction, too much histamine is released, and it has counter-productive effects.

Histamine (Medical)

A chemical in some cells of the body that is released during allergic reactions, causing inflammation; also causes production of acid in the stomach and narrowing of the airways

Histamine (Nutrition)

A chemical released by the immune system that acts on various body tissues. It has the effect of constricting the smooth bronchial tube muscles, dilating small blood vessels, allowing fluid to leak from various tissues, and increasing the secretion of stomach acid. See Allergies

Histamine (Psychoactives)

1. A neurotransmitter (in the brain; in the body, histamine initiates an allergic reaction).

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