Allergens
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The Body's Reaction to Allergens
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Scientists don't know why some people have a super sensitivity to allergens, but they do know the ways in which your body reacts to them. What you feel when an allergen comes in contact with you is a result of the chain reaction your body goes through to prevent an attack by a foreign substance. Those reactions cause the annoying symptoms we call allergies.
Multidata - Pollen.Com USA
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The Latex-Fruit Syndrome: A Review on Clinical Features
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During the last decade, latex IgE-mediated allergy has been recognized as a very important medical problem. At the same time, many studies have dealt with allergic cross-reactions between aeroallergens and foods. Recently, a "latex-fruit syndrome" has been postulated, because there is clear evidence of the existence of a significant clinical association between allergies to latex and certain fruits.
Several studies have demonstrated that from 20% to 60% of latex-allergic patients show IgE-mediated reactions to a wide variety of foods, mainly fruits. Although implicated foods vary among the studies, banana, avocado, chestnut and kiwi are the most frequently involved. Clinical manifestations of these reactions may vary from oral allergy syndrome to severe anaphylactic reactions, which are not uncommon, thus demonstrating the clinical relevance of this syndrome. The diagnosis of food hypersensitivities associated with latex allergy is based on the clinical history of immediate adverse reactions, suggestive of an IgE-mediated sensitivity. Prick by prick test with the fresh foods implicated in the reactions shows an 80% concordance with the clinical diagnosis, and therefore it seems to be the best diagnostic test currently available in order to confirm the suspicion of latex-fruit allergy. Once the diagnosis is achieved, a diet free of the offending fruits is mandatory.
Recently, some of the common allergens responsible for the cross-reactions among latex and the fruits most commonly implicated in the syndrome have been identified. Class I chitinases, with an N-terminal hevein like domain, which cross-react with the major latex allergen "hevein", seem to be the panallergens responsible for the latex-fruit syndrome.
Carlos BLANCO
Internet Symposium on Food Allergens Germany
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The Major Allergen from Hen's Egg White: Ovomucoid (Gal d 1)
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Ovomucoid (OM) is the dominant allergen from hen's egg white. Frequency of sensitization to OM varies from 34-97% in egg allergic patients. The carbohydrate moieties of OM present up to 22-29%. It consists of 186 amino acids forming three tandem domains, each providing trypsin inhibitory activity. Effective isolation and purification of OM was attained by combined IEC / SEC and by automated fraction collection using capillary zone electrophoresis. Matrix-assisted laser desorption / ionisation time of flight (MALDI-TOF) mass spectrometry revealed an average Mr of 28.0 kDa. Immunoblot and RAST inhibition experiments of
native and deglycosylated OM indicate that only peptide epitopes participate in IgE- binding structures of OM. All 3 domains exhibit IgE- binding potencies. At least 8 independent IgE binding regions using synthetic peptides of OM were identified. T-cell proliferative response in PBMC from egg allergic patients could be induced by all 3 domains, predominantly by the second and third domains.
Internet Symposium on Food Allergens Germany
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The process of an allergic reaction
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Explains the process of an allergic reaction using diagrams to depict the different phases.
Michael J. Chandler, M.D & Gary J. Stadtmauer, M.D
CityAllergy U.S.A
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The Triggers of Asthma and Allergies
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No one is sure what causes asthma and allergies, but we do know there are certain triggers. The worlds authorities, such as Asthma Australia, Asthma United Kingdom and the Asthma and Allergy Foundation of America agree that major triggers of asthma and allergies include airborne pollens and grass seeds, house dust, house dust mites and their faeces and pet dander.
Mite-Y-Fresh® Australia
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The Understanding Series
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Understanding Asthma,Immune Deficiencies, Allergy, Atopic Dermatitis. Your Child and Asthma. Exercise, Diet and Lung Disease. Emphysema and Chronic Bronchitis.
National Jewish Medical & Research Center USA
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The Use of In Vitro Tests for IgE Antibody - Position Statement
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Physician Reference Materials: Position Statements on the Use of In Vitro Tests for IgE Antibody in the Specific Diagnosis of IgE-Mediated Disorders and in the Formulation of Allergen Immunotherapy
AAAAI
American Academy of Allergy, Asthma and Immunology USA
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Tips for symptom prevention
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Inside Your Home, Outside Your Home, Your Car, Your Allergy Medication.
Astelin USA
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Treatmant Of Allergies
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Drugs, rigorous attention to conditions at home, Avoiding the allergen.
Bousquet J., Lockey R.,
Stallergenes - Allergen Vaccines Worldwide
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Types of Asthma
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Depending upon various aspects of severity, chronicity seasonal variation and predominant aggravating factors asthma is classified in to various types. Season, Allergen, Trigger, Severity.
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