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Immunoglobulins in Tears and Sera in Patients with Atopic Dermatitis

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The aim of the study was to investigate the role of circulating (i.e., present in the serum) and locally produced (i.e., in the lamina propria of mucous membranes) immunoglobulins including IgE. The IgG, IgA, IgM immunoglobulins, and IgE (total and specific) were measured in patients' sera with atopic dermatitis (AD) (n = 93). As control subjects 83 healthy volunteers, matched for sex and age, were included. The IgG and IgM levels were within the normal range. Mean value of the total IgA (2.55 ± 0.26 g/L, in controls 1.49 ± 0.32 g/L) and IgE (609 IU/mL, in controls below 40 IU/mL) levels were significantly elevated (p < 0.05) in sera of AD patients. Based on the serum total IgE levels (above or below 40 IU/mL) the patients were divided into RAST-positive and RAST-negative types of allergy, respectively. RAST-positive AD (n = 79) showed hypersensitivity to inhalant and food allergens determined by the specific IgE test. The majority of RAST-positive AD cases (n = 68) presented only skin manifestations, while the rest of the patients (n = 11) had rhinoconjunctivitis as well. RAST-positive AD patients with rhinoconjunctivitis showed an increased IgE level in tears (above 10 IU/mL). The specific IgE test positivity in tears correlated with elevated serum total IgE levels and specific IgE positivity (r = 0.925). Total and allergen-specific IgE in the tears can be used to diagnose allergy in vitro. It is believed that the mucosal permeability is enhanced in the atopic inflammatory process, and this may facilitate the transmission of environmental allergens.
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Document Type: Research Article

Publication date: 2001-03-01

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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