| When avoidance isn't possible, antihistamine medications may be prescribed to block the release of histamine in the body. |
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| Baseline specific airways conductance and airway responsiveness to histamine were measured using a non invasive body plethysmographic technique. |
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| Other amines and amine precursors such as histamine, dopamine, levodopa, and tyrosine may also be involved in these reactions. |
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| When mast cells degranulate they release tryptase, in addition to histamine and prostaglandins. |
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| The symptoms of carcinoid are produced by excess secretion of serotonin, and the flushing by histamine and tachykinins. |
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| These chemicals, which include histamine, prostaglandins and leukotrienes, have three main effects in the body. |
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| It has been demonstrated that DEPs directly degranulate mast cells and increase histamine levels and symptom severity in humans. |
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| Quercetin reduces histamine degranulation and the subsequent release of histamine and inflammatory leukotrienes. |
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| Urticaria is the medical name for red small raised welts which arise from release of histamine in the skin. |
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| The allergic reaction causes the cells to release histamine, a chemical which prompts the sneezing and itching impulse. |
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| Also, in some persons histamine can close up the bronchial tubes and make breathing difficult. |
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| Histamine H 2 receptor antagonists act by blocking the effect of histamine on parietal cells. |
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| Gastrin acts on the enterochromaffin-like cells in the gastric corpus to release histamine, which stimulates parietal cells to secrete acid. |
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| In humans, histamine is synthesized from histidine, a conditionally-essential amino acid. |
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| The cells contain histamine and trienes leukotrines that loosen cell joints and allow foreign proteins to enter deeply, causing lung tube spasm. |
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| Foods high in histamine, such as fermented foods, may exacerbate urticaria and angioedema in these individuals. |
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| This compound is employed as a classic mast cell secretagogue that releases histamine. |
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| Allergic reactions involve the release of histamine, a chemical that triggers inflammation and swelling. |
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| For example, the typical itching you feel around a healing scab may be caused by histamine released by mast cells. |
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| In a Japanese study of mast cells from nasal mucosa of individuals with perennial allergic rhinitis, quercetin significantly inhibited antigen-stimulated histamine release. |
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| The rest of the market goes to acid blockers, which prevent the action of histamine on the acid-secreting cells of the stomach, reducing acid secretion. |
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| Therefore, we evaluated the effects of the inhalation of lidocaine, salbutamol, lidocaine and salbutamol combined, and placebo on an inhalational histamine challenge. |
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| Amphetamine also induces effluxion of histamine from synaptic vesicles in mast cells and histaminergic neurons through. |
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| Supplementary kit for the quantitative determination of histamine release in heparinized whole blood. |
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| Chemicals like bradikinin and histamine accumulate and eventually activate nerve endings that carry a dull, diffuse sensation of pain. |
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| A new publication confirmed the work on the effects of histamine dilutions on basophil degranulation. |
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| Similarly, histamine arises in many tissues by the decarboxylation of histidine, which in excess causes constriction or dilation of various blood vessels. |
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| Mast cell degranulation likely plays a role, since studies show increased plasma histamine and tryptase concentrations. |
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| It leads to activation of the mast cells, with the release of histamine and inflammatory modulators. |
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| It was noted that histamine with homeopathic dose could reduce the sensitization of the basophiles. |
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| Like cholinergic urticaria, variant exercise-induced anaphylaxis produces small, punctate, erythematous papules and is associated with increased plasma histamine levels. |
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| Morphine may produce release of histamine with or without associated peripheral vasodilation. |
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| These may help to relieve itching, even though histamine is not a major contributing factor in eczema. |
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| Release of histamine will occur upon stimulation of basophilic granulocytes depending on their sensibility to the allergen. |
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| Opioids can cause itching, by releasing histamine from mast cells. |
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| In human polymorphonuclear leukocytes, tigecycline did not induce histamine release. |
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| Diphenhydramine is actually an antihistamine that causes drowsiness by temporarily blocking histamine action. |
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| Gastrin is responsible for action on the ECL cells, which release histamine, the most important stimulant of gastric acid secretion. |
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| It has moderate affinity for histamine and alpha adrenergic receptors, and no appreciable affinity for cholinergic muscarinic receptors. |
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| Recently, we presented evidence for an involvement of histamine in the generation and organization of such defensive reactions in the midbrain tectum. |
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| In addition, mast cells may release additional histamine, a cytokine which causes inflammation. |
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| Pruritus may also be due to activation of neural systems as opioids that do not release histamine also cause pruritus. |
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| Alert for Histamine is intended for the screening of histamine in scombroid species of fish, such as tuna, bluefish and mahi-mahi. |
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| Learn about Scombroid Poisoning, an allergic type reaction to high levels of histamine in fish that form when fish start to decompose. |
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| Since histamine is an important causative agent in urticaria, most cases respond to antihistamine treatment. |
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| However, tests show that no histamine is involved in the majority of itches. |
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| The Committee had an extensive exchange of views on the rationale for the determination of a histamine level. |
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| Thus, ranitidine inhibits both basal gastric secretion and gastric acid secretion induced by histamine, pentagastrin and other secretagogues. |
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| We do know some things that trigger the release of histamine from mast cells and cause the symptoms of mastocytosis. |
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| The effects of the nitric oxide synthase inhibitor on the response to histamine were mimicked by vagotomy or selective nerve blockade with tetrodotoxin. |
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| They block the body's histamine, that chemical substance that is responsible for allergy symptoms. |
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| Random testing for histamine is to be carried out to verify compliance with the permitted levels laid down under Community legislation. |
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| In contrast to morphine, tramadol has not been shown to cause histamine release. |
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| These effects on histamine secretion and on protein phosphorylation were rapid in onset and both showed tachyphylaxis. |
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| It works by blocking the action of histamine, reducing the symptoms of an allergic reaction. |
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| Mast cell degranulation releases vasoactive substances, including histamine, which sustain the reaction by depositing additional immune complexes. |
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| Chlorpheniramine, synthetic drug used to counteract the histamine reaction, as in allergies. |
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| Once this binding has occurred, chemicals including histamine are released, which may cause allergic symptoms such as inflammation in the nose and airways or elsewhere in the body. |
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| IgE induces release of inflammatory mediators such as histamine and cytokine from mastocytes and leukocytes. |
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| It is considered to be biphasic, the primary acute phase is correlated with the release of histamine, serotonin, kinins and some mediators. |
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| The Committee would however have to determine whether a histamine provision was required to address a direct health hazard or as an indicator of poor quality. |
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| Toxic reactions occur in anyone, given sufficient exposures, such as histamine in scombroid fish poisoning. |
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| Scombroid poisoning occurs when bacteria multiply in fish that's not fresh and produce high levels of a chemical called histamine. |
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| In experimental studies, trazodone is a weak inhibitor of noradrenalin re-uptake but is practically inactive against 1-dopa, histamine and acetylcholine. |
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| In 3B LASER NEEDLE acupuncture applications, the special laser light triggers the release of histamine, inducing depolarization of peripheral nociceptors during therapy. |
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| In the conscious dog with a Heidenhain pouch, ranitidine given orally or intravenously antagonised gastric acid secretion induced by histamine, pentagastrin and bethanechol. |
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| Biogenic amines such as histamine and tyramine are naturally produced by some lactic acid bacteria as a result of amino acid decarboxylation, particularly in vacuum packaged foods and chilled meats. |
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| An additional way of classifying opioids analgesic drugs is on the basis of their histamine releasing capacities. |
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| This is a feature of asthmatic attacks in some subjects, in whom repeated episodes also lead to increased sensitivity of the air passages to the constrictive action of histamine. |
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| One of the best-known chemical mediators released from cells during inflammation is histamine, which triggers vasodilation and increases vascular permeability. |
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| Large doses of codeine may cause the release of significant quantities of histamine, which may be associated with hypotension, cutaneous vasodilation, urticaria and, more rarely, bronchoconstriction. |
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| The primary effect of hydromorphone on the cardiovascular system is peripheral vasodilation which may be at least partially due to release of histamine. |
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| Olanzapine blocks a number of dopamine and serotonin receptor subtypes as well as catecholamines at alpha-adrenergic receptors, histamine at H1 receptors, and acetylcholine at muscarinic receptors. |
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| In the organism, histamine is present in nearly all tissues, and it is mainly stored in the metachromatic granula of mast cells and the basophilic leukocytes. |
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| Diphenhydramine counteracts the histamine reaction. |
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| This process occurs only when one or more types of receptors on the outer membrane of the parietal cell are bound to histamine, gastrin, or acetylcholine. |
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| Generic Allegra-D extended-release tablets is an antihistamine and decongestant combination. The antihistamine works by blocking the effects of histamine, which cause allergy symptoms. |
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| Scombrotoxin is attributed mainly to Enterobacteriaceae which can produce high levels of histamine and other biogenic amines in the fish muscle when products are not immediately chilled after catching. |
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| Specific food safety issues, experienced by the industries, included levels of histamine and heavy metals in fish products and the presence of aflatoxins in copra meals for animal feed. |
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| The mast cell responds by histamine secretion from its granula. |
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| However, products which have undergone enzyme ripening treatment in brine may have higher histamine levels but not more than twice the above values. |
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| Use of plasma histamine levels to monitor cutaneous mast cell degranulation. |
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| The intake of food triggers a release of histamine, which activates the acid-secreting cells. |
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| The effect of histamine on growth of cultured fibroblasts isolated from normal and keroid tissue. |
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| Lavages were then performed at 10 minutes, 24 hours, and at 4 and 7 days afterward and analyzed for levels of IgE and histamine. |
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| This is understandable, as when the mast cell becomes activated, several other strong mediators besides histamine get released, too. |
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| Anchovies are associated with scombroid-poisoning due to biogenic amine contents such as histamine, putrescine and cadaverine. |
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| Some of the mediators are histamine, heparin, leukotrienes, serotonin, chemotactic factors, tryptase, chymase and prostaglandins. |
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| It could be dermographia, which makes skin cells release histamine when the skin is scratched. |
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| In experimental studies, platelet aggregation, mastocyte degranulation and histamine secretion have been shown to occur after trigeminal ganglion stimulation. |
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| IgE and the allergen team up to trigger the mast cell to degranulate and release histamine and other chemical mediators that cause the symptoms of hay fever and asthma. |
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| Packed with granules of histamine, heparin and other chemical mediators, mast cells degranulate, releasing their contents, in response to the presence of allergens. |
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| The most common biogenic amines found in foods are histamine, tyramine, cadaverine, 2-phenylethylamine, spermine, sperm idi ne, putrescine, tryptamine, and agmatine. |
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| Monocyte chemotactic protein-1 acts as a chemoattractant, promoting infiltration of immune cells, and as a basophil agonist, which leads to histamine release. |
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| Induction of experimental duodenal ulcers by histamine administration is mediated through both enhanced gastric acid secretion and vasospastic action of histamine. |
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| Potential role of histamine monochloramine in a rabbit model of ileitis. |
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| Nevertheless, no connections were found between the levels of IgE and histamine caused by anti IgE antibody in healthy people as well as in patients with pollinosis. |
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| Many pre-formed mediators are involved in an anaphylactic reaction, including histamine, tryptase, chymase, mast cell carboxypeptidases, platelet activating factor and others. |
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| But in the itchy rash of chronic hives, histamine release appears to be more spontaneous, suggesting that the histamine-carrying mast cells and basophils are abnormal. |
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| But too much histamine can also produce dizziness, nausea, hypotension, abdominal cramps, diarrhea, meteorism, and even cyclical headaches and dysmenorrhea in women. |
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