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Unique profile of IL-4 and IFN-gamma production by peripheral blood mononuclear cells in infants with atopic dermatitis. 1998

M Kimura, and S Tsuruta, and T Yoshida
Department of Allergy and Clinical Immunology, Shizuoka Children's Hospital, Shizuoka City, Japan.

Although the level of house dust mite (HDM)-specific lymphocyte proliferation is high in infants with atopic dermatitis (AD), the level of HDM-specific IgE antibody (HDM-IgE-RAST) is usually very low or negative. To elucidate the cause of the deficient HDM-specific IgE antibody formation in infants with AD, we examined the profile of IL-4 and IFN-gamma production by HDM-stimulated PBMCs. The amount of IL-4 production was higher in infants with AD and in children with AD (3 to 15 years) than in the nonatopic control subjects. Although the amount of IFN-gamma production in children with AD was lower than that found in nonatopic children, it was higher in infants with AD than in nonatopic infants. This result suggests that HDM-specific helper T lymphocytes in infants with AD have not yet differentiated into TH2 but rather stayed at the stage of TH0. The level of IgE-RAST for egg white (EW) is already elevated in infants with AD. The amount of IL-4 produced by EW-stimulated PBMCs was comparable to that produced by HDM-stimulated PBMCs in infants with AD. However, the amount of IFN-gamma produced by EW-stimulated PBMCs was distinctly lower than that produced by HDM-stimulated PBMCs in infants with AD. Although there was no correlation between the amount of IL-4 production by HDM-stimulated PBMCs and the level of HDM-IgE-RAST in infants with AD, the amount of IL-4 production by EW-stimulated PBMCs was closely correlated with the level of EW-IgE-RAST. These results suggest that it is not the lack of IL-4 but rather a relative increase in IFN-gamma production by HDM-specific helper T lymphocytes that causes the deficiency of HDM-specific IgE-antibody synthesis in infants with AD.

UI MeSH Term Description Entries
D007073 Immunoglobulin E An immunoglobulin associated with MAST CELLS. Overexpression has been associated with allergic hypersensitivity (HYPERSENSITIVITY, IMMEDIATE). IgE
D007223 Infant A child between 1 and 23 months of age. Infants
D007371 Interferon-gamma The major interferon produced by mitogenically or antigenically stimulated LYMPHOCYTES. It is structurally different from TYPE I INTERFERON and its major activity is immunoregulation. It has been implicated in the expression of CLASS II HISTOCOMPATIBILITY ANTIGENS in cells that do not normally produce them, leading to AUTOIMMUNE DISEASES. Interferon Type II,Interferon, Immune,gamma-Interferon,Interferon, gamma,Type II Interferon,Immune Interferon,Interferon, Type II
D007963 Leukocytes, Mononuclear Mature LYMPHOCYTES and MONOCYTES transported by the blood to the body's extravascular space. They are morphologically distinguishable from mature granulocytic leukocytes by their large, non-lobed nuclei and lack of coarse, heavily stained cytoplasmic granules. Mononuclear Leukocyte,Mononuclear Leukocytes,PBMC Peripheral Blood Mononuclear Cells,Peripheral Blood Human Mononuclear Cells,Peripheral Blood Mononuclear Cell,Peripheral Blood Mononuclear Cells,Leukocyte, Mononuclear
D008214 Lymphocytes White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS. Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
D008925 Mites Any arthropod of the subclass ACARI except the TICKS. They are minute animals related to the spiders, usually having transparent or semitransparent bodies. They may be parasitic on humans and domestic animals, producing various irritations of the skin (MITE INFESTATIONS). Many mite species are important to human and veterinary medicine as both parasite and vector. Mites also infest plants. Acarus,Mite
D011852 Radioallergosorbent Test An in vitro allergen radioimmunoassay in which allergens are coupled to an immunosorbent. The coupled allergens bind the IgE in the sera of patients which in turn binds radioisotope-labeled anti-IMMUNOGLOBULIN E antibodies. Radioimmunosorbent Assay of Allergens,Allergens Radioimmunosorbent Assay,Allergens Radioimmunosorbent Assays,Radioallergosorbent Tests,Test, Radioallergosorbent,Tests, Radioallergosorbent
D002455 Cell Division The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION. M Phase,Cell Division Phase,Cell Divisions,Division Phase, Cell,Division, Cell,Divisions, Cell,M Phases,Phase, Cell Division,Phase, M,Phases, M
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children

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