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Increased interleukin-4 production by atopic mononuclear leukocytes correlates with increased cyclic adenosine monophosphate-phosphodiesterase activity and is reversible by phosphodiesterase…
Previous studies have shown that leukocytes from patients with atopic dermatitis have increased levels of cyclic adenosine monophosphate (cAMP)-phosphodiesterase activity. This increased activity… Expand
Abnormal skin irritancy in atopic dermatitis and in atopy without dermatitis.
BACKGROUND AND DESIGN Past observations have shown increased irritancy in patients with "conditioned hyperirritability" due to active dermatitis, including atopic dermatitis (AD). In less active… Expand
Phosphodiesterase inhibition by Ro 20-1724 reduces hyper-IgE synthesis by atopic dermatitis cells in vitro.
Peripheral blood mononuclear leukocytes (MNL) from patients with atopic dermatitis spontaneously produce large amounts of IgE in vitro. These cells also show markedly elevated levels of cAMP… Expand
Elevated leukocyte cyclic AMP-phosphodiesterase in atopic disease: a possible mechanism for cyclic AMP-agonist hyporesponsiveness.
Previous studies have documented that leukocytes from atopic individuals show reduced cyclic AMP (cAMP) responsiveness to isoproterenol, histamine, and prostaglandin E1. We questioned whether this… Expand
Increased leukocyte histamine release with elevated cyclic AMP-phosphodiesterase activity in atopic dermatitis.
- J. Butler, S. Chan, S. Stevens, J. Hanifin
- The Journal of allergy and clinical immunology
- 1 May 1983
Maximal leukocyte histamine release in response to concanavalin A was significantly higher in a group of 16 adult patients with moderate to severe atopic dermatitis when compared to 13 adult… Expand
HUMAN MONOCYTES AND MACROPHAGES
PPD-sensitized monocytes and macrophages from tuberculin-positive subjects are both capable of inducing blastogenic transformation of autologous lymphocytes. Incorporation of thymidine-3H and… Expand
Overexpression of IL-10 in atopic dermatitis. Contrasting cytokine patterns with delayed-type hypersensitivity reactions.
The skin lesions of patients with atopic dermatitis provide a model to study immunoregulation in human allergy. To determine the local cytokine pattern of cells present (both endogenous and… Expand
Substance P-induced histamine release in human cutaneous mast cells.
- J. Ebertz, C. Hirshman, N. Kettelkamp, H. Uno, J. Hanifin
- Chemistry, Medicine
- The Journal of investigative dermatology
- 1 June 1987
Substance P is an undecapeptide found in multiple sites throughout the central and peripheral nervous systems including small unmyelinated (type C) cutaneous nerve fibers. Previous studies… Expand
Altered prostaglandin E2 regulation of cytokine production in atopic dermatitis.
The monocyte-derived inflammatory mediator, prostaglandin E2 (PGE2), can reduce IFN-gamma production, and this in turn may relate to IL-4 up-regulation of IgE synthesis and impaired delayed… Expand
Monocyte phosphodiesterase abnormalities and dysregulation of lymphocyte function in atopic dermatitis.
The immunologic aberrations associated with atopic dermatitis include the paradox of reduced cell-mediated immune responses in the setting of increased cell-mediated immunity features that resemble… Expand