Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0042109 (urticaria)
 6,569 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The localization of transferrin and C3d receptors in various skin lesions and normal appearing skin have been studied on sections with the PAP technique. The transferrin receptor was recognized in the lower epidermis from psoriatic plaques. Here it was more evident than in other inflammatory or hyperproliferative disorders where it was mainly detected on the basal cells. In healthy skin or lesions of lichen planus, scleroderma and ichthyosis the transferrin receptor was not detected in the epidermis. The C3d receptor was in normal skin found on the basement membrane and on elastic fibres in the papillary dermis. The basement membrane was strongly marked in pemphigoid but was not seen in lichen planus and Ehlers-Danlos syndrome. In patients with urticaria factitia, contact dematitis, psoriasis and Darier's disease the suprabasal cells also expressed C3d whereas in other dermatoses the epidermis was negative. Colloid bodies in lichen planus and GVH reactions expressed both the transferrin receptor and C3d.
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PMID:Detection of transferrin and C3d receptors in the skin of patients with various dermatoses. 197 52

There is a high incidence of asthma, rhinitis, conjunctivitis and contact urticaria in workers of precious metal refineries. Symptoms are closely associated with sensitization to halogenated platinum compounds, as assessed by skin-prick test. The aim of the present study was to examine the molecular mechanisms involved by describing the T-cell receptor (TCR) repertoire distribution of peripheral blood mononuclear cells (PBMCs) without and after in vitro stimulation with sodium hexachloroplatinate. PBMCs of 17 sensitized subjects with work-related asthma and a positive skin-prick test result to sodium hexachloroplatinate and of 15 nonexposed subjects were isolated and TCR expression determined by flow cytometry. Furthermore, the sodium hexachloroplatinate-mediated in vitro effects on the frequency of Vbeta-expressing T-cells, the proliferation response and the expression of cell surface molecules like CD71, CD25, CD95 and HLA-DR were studied. CD3-positive lymphocytes of platinum salt-sensitized workers had a significantly higher frequency of Valpha2a+, Vbeta11+ and Vbeta21.3+ T-cells than controls (p<0.01, p<0.01 and p<0.001 respectively). In vitro stimulation of PBMCs from platinum salt-sensitized as well as control subjects with sodium hexachloroplatinate increased the percentage of CD3-positive cells bearing specific TCRs, especially Vbeta5.3, Vbeta6.7, Vbeta8a, Vbeta20 and Vbeta21.3. This effect was time- and dose-dependent. The present results indicate that the frequencies of Valpha2a-, V11 and Vbeta21.3-bearing blood T-cells and platinum salt-induced lymphocyte proliferation are strongly enhanced in subjects who suffer from asthma due to platinum salt. In addition, in vitro stimulation with sodium hexachloroplatinate modulates the frequencies of certain T-cell receptor-bearing T-cells.
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PMID:T-cell receptor repertoire expression in workers with occupational asthma due to platinum salt. 1115 86