title: Elevated oxidative stress in skin of B6C3F1 mice affects dermal exposure to metal working fluid.
abstract: Metal working fluids (MWFs) are widely used in industry for metal cutting, drilling, shaping, lubricating, and milling. Potential for dermal exposure to MWFs exists for a large number of men and women via aerosols and splashing during the machining operations. It has been reported earlier that occupational exposure to MWFs causes allergic and irritant contact dermatitis. Previously, we showed that dermal exposure of female and male B6C3F1 mice to 5% MWFs for 3 months resulted in accumulation of mast cells and elevation of histamine in the skin. Topical exposure to MWF also resulted in elevated oxidative stress in the liver of both sexes and the testes in males. The goal of this study was to evaluate the interaction between oxidative stress in the skin and topical application of MWF. Oxidative stress in skin ofB6C3F1 mice of both sexes was generated by intradermal injection ofthe hydrogen peroxide (H2O2) -producing enzyme, glucose oxidase with polyethylene glycol (GOD+PEG). In mice given GOD+PEG, topical treatment with MWF (200 microl, 30%, for 1, 3, or 7 days) resulted in a mixed inflammatory cell response, accumulation of peroxidative products, and reduction of GSH content in the skin. Such changes were not observed with MWF treatment alone. These data indicate that oxidative stress can enhance dermal inflammation caused by occupational exposure to MWF.
authors.affiliation: Health Effects Laboratory Division, Pathology and Physiology Research Branch, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia 26505, USA. ats1@cdc.gov
authors.forename: A A
authors.initials: AA
authors.lastname: Shvedova
authors.forename: E
authors.initials: E
authors.lastname: Kisin
authors.forename: J
authors.initials: J
authors.lastname: Kisin
authors.forename: V
authors.initials: V
authors.lastname: Castranova
authors.forename: C
authors.initials: C
authors.lastname: Kommineni
mesh_terms: D000279:Administration, Cutaneous; D000818:Animals; D005260:Female; D005949:Glucose Oxidase / Q000008:administration & dosage / Q000009:adverse effects; D005978:Glutathione / Q000378:metabolism; D007219:Industrial Oils / Q000633:toxicity*; D007249:Inflammation / Q000139:chemically induced / Q000473:pathology; D007271:Injections, Intradermal; D008297:Male; D008669:Metallurgy; D051379:Mice; D018384:Oxidative Stress; D011092:Polyethylene Glycols / Q000008:administration & dosage / Q000009:adverse effects; D012871:Skin Diseases / Q000139:chemically induced* / Q000378:metabolism* / Q000473:pathology; D012883:Skin Ulcer / Q000139:chemically induced / Q000473:pathology
chemical_list: D011092:Polyethylene Glycols; D005949:Glucose Oxidase; D005978:Glutathione