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  • Title: Decreased natural killer cell activity in atopic eczema.
    Author: Hall TJ, Rycroft R, Brostoff J.
    Journal: Immunology; 1985 Oct; 56(2):337-44. PubMed ID: 3876984.
    Abstract:
    We have studied NK cell activity in atopic and non-atopic subjects using a standard 51Cr-release assay and K562 target cells. In atopics (AT) with allergic rhinitis and/or asthma, NK cell activity was similar to that in non-atopic (N) subjects, whilst patients with severe atopic eczema (AE) had depressed NK cell activity compared to AT or N subjects. In addition, circulating T-cell numbers and Con A responsiveness was decreased in AE, although neither parameter was correlated with decreased NK cell activity. However, decreased NK cell activity in atopic eczema was positively correlated with decreased numbers of Fc gamma + lymphocytes (P = 0.01) and decreased effector: target cell binding (P = 0.05), and negatively correlated with increased monocytes in AE (P = 0.09). AE NK cell activity was equally or more sensitive to the inhibitory effects of drugs such as dibutyryl cyclic AMP, prostaglandins (PG) D2,E2 and histamine. The relative percentage increase in NK cell activity by the interferon inducer poly I:C was similar in AE patients and controls. The results suggest that reduced numbers of circulating NK cells and pre-NK cells account for the depressed level of NK cell activity in subjects with severe atopic eczema.
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