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histamine
histamine
histamine (hist-ă-meen) n. a compound derived from the amino acid histidine, found in nearly all tissues of the body. Histamine causes dilation of blood vessels and contraction of smooth muscle; it is an important mediator of inflammation and is released in large amounts after skin damage, producing flushing, a flare, and a weal. Histamine is also released in anaphylactic reactions. See also
anaphylaxis,
antihistamine.
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Histamine-induced itch and its relationship with pain.(Review)
Magazine article from: Molecular Pain; 7/31/2008; ; 700+ words
; ...pruritogenic agents, see [3, 4]), histamine is best known to evoke experimental itch...that we understand the manner in which histamine induces itch. In this regard, it is...mainly on experimental findings concerning histamine-induced itch. Histamine and itch Histamine...
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Histamine may aid in battle against tumors
Magazine article from: Dermatology Times; 12/1/1999; ; 700+ words
; ...a naturally occurring molecule called histamine, researchers can better stimulate an...leading cancer centers are testing whether histamine added to immunotherapy agents will improve...their tumor-killing ability. When histamine is added to immunotherapy, it attaches...
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Histamine: putative transmitter for lateral inhibition in Limulus eye. (horseshoe crab)
Magazine article from: The Biological Bulletin; 10/1/1997; ; 700+ words
; ...mediates lateral inhibition in the Limulus eye? Histamine has been implicated as a photoreceptor neurotransmitter...preparations that study the postsynaptic effects of histamine, histamine has been shown to be inhibitory (7, 8). Biochemical...
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The H1 histamine receptor regulates allergic lung responses.(Research article)(includes statistical table)
Magazine article from: Journal of Clinical Investigation; 6/1/2006; ; 700+ words
; Histamine, signaling via the type 1 receptor...Further investigation revealed that histamine acts as a T cell chemotactic factor and...Cultured T cells migrated in response to histamine in vitro, but this was ablated by blockade...
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Different roles of histamine receptor subtypes in ampullar & isthmic segments of human fallopian tube
Magazine article from: Indian Journal of Medical Research; 5/1/1998; ; 700+ words
; ...the influence of both menstrual cycle phase and subtype-selective histamine antagonists on the contractions produced by histamine isolated in human fallopian tubes. Histamine produced tonic contractions of the isolated preparations of both the...
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IMMUNOHISTOCHEMICAL LOCALIZATION OF HISTAMINE RECEPTOR SUBTYPES IN HUMAN INFERIOR TURBINATES
Magazine article from: The Annals of Otology, Rhinology & Laryngology; 7/1/2004; ; 700+ words
; Histamine is an important chemical mediator in...the immunohistochemical localization of histamine receptor subtypes (H1R, H2R, H3R...study was to examine the distribution of histamine receptor subtypes in the human inferior...
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Benefits of a histamine-reducing diet for some patients with chronic urticaria and angioedema
Magazine article from: Canadian Journal of Dietetic Practice and Research; 4/1/2000; ; 700+ words
; ...primarily from the physiological actions of histamine. Some individuals with urticaria have a decreased ability to degrade dietary histamine before it enters the circulation. Foods high in histamine, such as fermented foods, may exacerbate...
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Genetic variability of histamine receptors in patients with Parkinson's disease.(Research article)
Magazine article from: BMC Medical Genetics; 3/17/2008; ; 700+ words
; ...3]; Jos AG Agndez [3] Background Histamine is involved in neuronal degeneration...patients [3]. It has been shown that histamine causes selective damage in the dopaminergic...4]. Among patients with PD, blood histamine levels [5] and the concentration of...
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Macrophages may uptake histamine for clearance by L-histidine decarboxylase.
Newspaper article from: Biotech Week; 10/15/2003; 700+ words
; ...Macrophages may uptake excess histamines for clearance by L-histidine...demonstrated that dietary histamine is accumulated in the spleens...mice, which lack endogenous histamine synthesis. "To characterize...clearance system for dietary histamine in mice, we investigated...
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Uptake of the neurotransmitter histamine into the eyes of larvae of the barnacle (Balanus amphitrite).(Statistical Data Included)
Magazine article from: The Biological Bulletin; 2/1/2002; ; 700+ words
; ...photoreceptors of adult barnacles use histamine as their neurotransmitter and take up [H.sup.3]-histamine selectively from the extracellular medium...for the uptake of [H.sup.3]-histamine into the eyes of the free-swimming...
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Histamine 2 Antagonists
Encyclopedia entry from: Gale Encyclopedia of Cancer
Histamine 2 antagonists Definition Histamine 2 antagonists are drugs that block the production of acid in the stomach. Purpose Histamine 2 antagonists are used to treat the precancerous condition...
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Histamine
Book article from: World of Microbiology and Immunology
Histamine Histamine is a hormone that is chemically similar to the hormones serotonine...another cell or tissue located elsewhere in the body. Specifically, histamine plays a role in localized immune responses and in allergic reactions...
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histamine
Book article from: The Columbia Encyclopedia, Sixth Edition
histamine , organic compound derived in the body...found in many plant and animal tissues, histamine is specifically important in human physiology...certain types of antibodies. Released histamine tends to dilate blood capillaries, often...
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Antihistamine
Book article from: Medical Discoveries
...stomach upset and diarrhea as well. Histamine was first recognized and suggested...1881-1940) in 1910. By 1932 histamines were confirmed as causative agents...on this problem in 1936. Since histamine is extremely toxic except when...
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Allergies
Book article from: World of Microbiology and Immunology
...to discharge its histamines and other anti...are two types of histamine: H1 and H2. H1 histamines travel to receptor...the production of histamine or block them at...the release of the histamines that cause the allergic...
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