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PubMed1950

[Scleroderma].

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Scleroderma, Localized↗
PubMed1950

Scleroderma.

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Scleroderma, Localized↗
PubMed2004

[Eosinophilic fasciitis--current database].

For the first time eosinophilic fasciitis (EF) was described by Shulman. It occurs predominantly in young men, rarely in older women and sporadically in children. The illness was characterised by swelling of the extremities, skin changes, myalgia, and elevation of the peripheral blood eosinophils count and hypergammaglobulinemia. It is followed by rapidly progressive cutaneous and subcutaneous indurations. The histopathologic examination of affected skin shows thickening of the fascia, deep dermal fibrosis and infiltration mainly consists of lymphocytes, plasmocytes, eosinophils. It is suggested that the cells from infiltration induce fibrosis. The tryptophan disturbance has significant influence on development of EF in predisposed persons. Eosinophilic fasciitis is classified into wide spectrum of scleroderma disorders by many authors. The authors tried to show differences between EF, morphea and systemic scleroderma.

Diagnosis, Differential↗
PubMed1992

Expression of HLA class II antigens on skin fibroblasts in scleroderma.

Skin biopsies were taken from 11 patients with morphoea, nine with acrosclerosis and 10 with diffuse systemic sclerosis and processed for immunohistochemical studies using a panel of monoclonal antibodies including antibodies to MHC class II antigens. A significantly higher percentage of HLA-DR positive dermal cells were observed in the reticular dermis in biopsies from patients with morphoea (44.1 +/- 16.2%), acrosclerosis (15.9 +/- 5.4%) and systemic sclerosis (39.5 +/- 2.3%) when compared with the controls (6.6 +/- 2%). A smaller percentage of dermal cells also expressed HLA-DP and -DQ. The degree of monocnuclear cell infiltrate in the biopsies, however, did not correlate with the percentage of HLA class II positive fibroblasts. In organ culture, the expression of the HLA class II antigens was almost totally lost after 3 days and was no longer detected on fibroblasts after 3 weeks of culture.

Cell Count↗
PubMed2005

Relationship between occupational risk factors and severity markers of systemic sclerosis.

OBJECTIVE: To investigate a potential association between occupational risk factors and severity markers of systemic sclerosis (SSc) defined by diffuse cutaneous extent, pulmonary involvement, and immunologic profile, i.e., presence of antitopoisomerase I antibody (anti-topo I). METHODS: Occupational exposures were assessed in 105 patients with SSc from 1998 to 2002. Exposures to silica dust, welding fumes, solvents, and epoxy resins were investigated. A group of 39 exposed SSc patients and a group of 66 unexposed ones were identified and compared according to severity markers of SSc. The stage of cutaneous extent was defined according to the classification of Leroy, as limited scleroderma (lSSc) or diffuse scleroderma (dSSc). Respiratory status was defined by pulmonary function tests and high resolution computed tomography. Immunological profile was determined by the presence of anti-topo I or anticentromere antibodies (ACA). Statistical relationships between occupational exposures and severity markers of SSc were evaluated using a multiple correspondence analysis and Fisher's exact test. RESULTS: Diffuse scleroderma affected mainly patients exposed during their occupational life to toxic agents. There were significant or close to significant associations between toxic exposure and dSSc (p = 0.06), pulmonary involvement (p = 0.10), and negative ACA (p = 0.03). The most incriminated products seemed to be epoxy resins (p = 0.06), white spirit (p = 0.07), aromatic solvents (p = 0.07), and silica coupled to welding fumes (p = 0.10). CONCLUSION: Our results indicate that occupational toxic factors have an influence on the severity of SSc.

Adult↗