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histamine
histamine
histamine A compound formed by the decarboxylation of
histidine and released principally by
mast cells during an allergic reaction, in mediating inflammation. It causes the dilation of blood vessels, the increased permeability of
capillaries, and the contraction of smooth muscle.
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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: H 1 and H 2 . H 1 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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