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  • Title: Biochemical markers of basement membrane disturbances and occupational exposure to hydrocarbons and mixed solvents.
    Author: Stevenson A, Yaqoob M, Mason H, Pai P, Bell GM.
    Journal: QJM; 1995 Jan; 88(1):23-8. PubMed ID: 7534597.
    Abstract:
    To investigate possible mechanisms of hydrocarbon or solvent-induced renal damage, we studied three groups of healthy men employed in a UK manufacturing plant. Group 1 (n = 111) were occupationally exposed to hydrocarbon-based paints, Group 2 (n = 100) were occupationally exposed to petroleum-based mineral oils, and Group 3 (n = 92) had low background occupational exposure to hydrocarbons. Occupational atmospheric exposure levels for toluene, xylene, butanol and oil mist around the time of this study were within UK permissible limits. Group 4 (controls) were males with no known occupational hydrocarbon or solvent exposure (n = 108). Circulating laminin antibodies and the auto-antibody implicated in Goodpasture's syndrome (anti-GBM) were measured, as were serum laminin, a basement membrane turnover marker, and soluble E-selectin, an endothelial activation marker. Group 1 had a significantly greater proportion of subjects with high levels of both anti-laminin antibodies and soluble E-selectin; Group 2 had significantly more subjects with raised anti-GBM antibodies, laminin and soluble E-selectin. Mean levels of soluble E-selectin were increased in Groups 1 and 2. In a small but significant proportion of these workers exposed to hydrocarbons/mixed solvents there are alterations both to basement membranes, resulting in auto-antibody production, and to overlying vascular endothelial cells.
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