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sVCAM-1 levels after segmental antigen challenge correlate with eosinophil influx, IL-4 and IL-5 production, and the late phase response. 1995

J G Zangrilli, and J R Shaver, and R A Cirelli, and S K Cho, and C G Garlisi, and A Falcone, and F M Cuss, and J E Fish, and S P Peters
Department of Medicine, Jefferson Medical College, Philadelphia, Pennsylvania 19107-5083, USA.

Evidence from in vitro studies suggests a potential role for vascular cell adhesion molecule-1 (VCAM-1) in eosinophil trafficking. We hypothesized that induction of VCAM-1 occurs in the lung during IgE-mediated airway inflammation in humans. The technique of segmental antigen provocation followed by bronchoalveolar lavage (BAL) at 24 h was used to study 27 ragweed-allergic asthmatics (AA) and 18 atopic nonasthmatics (ANA). Total and differential cell counts were performed, and IL-4, IL-5, and soluble (VCAM) (sVCAM) levels in concentrated BAL fluid were measured by ELISA. A large increase in sVCAM levels after segmental challenge in both AA and ANA (1.79 +/- 0.31 to 139.39 +/- 68.58 ng/ml, p < 0.0005 and 2.85 +/- 0.80 to 98.25 +/- 77.35 ng/ml, p < 0.05, respectively) was observed. BAL IL-4 and IL-5 also increased after challenge (IL-4: 51.7 +/- 17.72 to 150.1 +/- 58.82 pg/ml, 0.05 < p < 0.10, n = 20 for AA, and 36.6 +/- 9.05 to 116.8 +/- 51.5 pg/ml, 0.05 < p < 0.10, n = 15 for ANA; IL-5: 0 to 2.67 +/- 1.62 ng/ml, p < 0.01, n = 16 for AA, and 0 to 2.87 +/- 2.16 ng/ml, 0.05 < p < 0.10, n = 10 for ANA). In both groups, the majority of the increase in sVCAM, IL-4, and IL-5 was accounted for by subjects who displayed a dual phase response after whole-lung antigen inhalation. This fact, plus the strong correlation observed between postchallenge sVCAM, IL-4, and IL-5 levels and eosinophil influx, suggests that VCAM, IL-4, and IL-5 play important roles in the recruitment of eosinophils to the lung of humans after antigen challenge.

UI MeSH Term Description Entries
D006969 Hypersensitivity, Immediate Hypersensitivity reactions which occur within minutes of exposure to challenging antigen due to the release of histamine which follows the antigen-antibody reaction and causes smooth muscle contraction and increased vascular permeability. Atopic Hypersensitivity,Hypersensitivity, Atopic,Hypersensitivity, Type I,IgE-Mediated Hypersensitivity,Type I Hypersensitivity,Atopic Hypersensitivities,Hypersensitivities, Atopic,Hypersensitivities, IgE-Mediated,Hypersensitivities, Immediate,Hypersensitivities, Type I,Hypersensitivity, IgE-Mediated,IgE Mediated Hypersensitivity,IgE-Mediated Hypersensitivities,Immediate Hypersensitivities,Immediate Hypersensitivity,Type I Hypersensitivities
D008297 Male Males
D001985 Bronchial Provocation Tests Tests involving inhalation of allergens (nebulized or in dust form), nebulized pharmacologically active solutions (e.g., histamine, methacholine), or control solutions, followed by assessment of respiratory function. These tests are used in the diagnosis of asthma. Allergen Bronchial Provocation Tests,Allergen Challenge, Endobronchial,Antigen Bronchial Provocation Tests,Bronchial Allergen Challenge,Bronchial Challenge Tests,Inhalation Provocation Tests,Provocation Tests, Bronchial,Endobronchial Challenge Tests,Allergen Challenge, Bronchial,Allergen Challenges, Bronchial,Allergen Challenges, Endobronchial,Bronchial Allergen Challenges,Bronchial Challenge Test,Bronchial Provocation Test,Challenge Test, Bronchial,Challenge Test, Endobronchial,Challenge Tests, Bronchial,Challenge Tests, Endobronchial,Challenge, Bronchial Allergen,Challenge, Endobronchial Allergen,Challenges, Bronchial Allergen,Challenges, Endobronchial Allergen,Endobronchial Allergen Challenge,Endobronchial Allergen Challenges,Endobronchial Challenge Test,Inhalation Provocation Test,Provocation Test, Bronchial,Provocation Test, Inhalation,Provocation Tests, Inhalation,Test, Bronchial Challenge,Test, Bronchial Provocation,Test, Endobronchial Challenge,Test, Inhalation Provocation,Tests, Bronchial Challenge,Tests, Bronchial Provocation,Tests, Endobronchial Challenge,Tests, Inhalation Provocation
D001992 Bronchoalveolar Lavage Fluid Washing liquid obtained from irrigation of the lung, including the BRONCHI and the PULMONARY ALVEOLI. It is generally used to assess biochemical, inflammatory, or infection status of the lung. Alveolar Lavage Fluid,Bronchial Lavage Fluid,Lung Lavage Fluid,Bronchial Alveolar Lavage Fluid,Lavage Fluid, Bronchial,Lavage Fluid, Lung,Pulmonary Lavage Fluid,Alveolar Lavage Fluids,Bronchial Lavage Fluids,Bronchoalveolar Lavage Fluids,Lavage Fluid, Alveolar,Lavage Fluid, Bronchoalveolar,Lavage Fluid, Pulmonary,Lavage Fluids, Alveolar,Lavage Fluids, Bronchial,Lavage Fluids, Bronchoalveolar,Lavage Fluids, Lung,Lavage Fluids, Pulmonary,Lung Lavage Fluids,Pulmonary Lavage Fluids
D002452 Cell Count The number of CELLS of a specific kind, usually measured per unit volume or area of sample. Cell Density,Cell Number,Cell Counts,Cell Densities,Cell Numbers,Count, Cell,Counts, Cell,Densities, Cell,Density, Cell,Number, Cell,Numbers, Cell
D004804 Eosinophils Granular leukocytes with a nucleus that usually has two lobes connected by a slender thread of chromatin, and cytoplasm containing coarse, round granules that are uniform in size and stainable by eosin. Eosinophil
D005260 Female Females
D006255 Rhinitis, Allergic, Seasonal Allergic rhinitis that occurs at the same time every year. It is characterized by acute CONJUNCTIVITIS with lacrimation and ITCHING, and regarded as an allergic condition triggered by specific ALLERGENS. Hay Fever,Pollen Allergy,Pollinosis,Seasonal Allergic Rhinitis,Hayfever,Allergic Rhinitides, Seasonal,Allergic Rhinitis, Seasonal,Allergies, Pollen,Allergy, Pollen,Fever, Hay,Pollen Allergies,Pollinoses,Rhinitides, Seasonal Allergic,Rhinitis, Seasonal Allergic,Seasonal Allergic Rhinitides
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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