Bisphosphonate als erfolgreiches Behandlungsprinzip der primär chronischen Osteomyelitis beim SAPHO-Syndrom

Patch testing with components of water-based metalworking fluids: results of a multicentre study with a second series

Background: Although many allergens in metalworking fluids (MWF) are identified, there are still some MWF components, which are not sufficiently investigated concerning their sensitizing properties. Objectives: To investigate sensitization to 10 frequently used MWF components, which are not part of the established MWF test series, in metalworkers with suspected occupational dermatitis due to MWF. Patients/Methods: Oleyl alcohol, myristyl alcohol, dimethylolurea, 4,4'-methylenebis morpholine, imazalil, 1-amino-2-propanol (monoisopropanolamine; MIPA), 2-amino-2-ethyl-1,3-propanediol (AEPD), 2,5-bis(n-octyldithio)-1,3,4-thiadiazole, zinc alkyl dithiophosphate and dibenzyl disulfide have been p…

Patch test results with the metalworking fluid series of the German Contact Dermatitis Research Group (DKG).

Based on the information of the interdisciplinary task force on allergy diagnostics in the metal branch, in 2001, the German Contact Dermatitis Research Group (DKG) compiled two metalworking fluid (MWF) test series with currently and previously used components, respectively. After 2 years of patch testing, we present results obtained with these series, based on data of the Information Network of Departments of Dermatology (IVDK). 251 metalworkers who were patch tested because of suspected MWF dermatitis in 2002 and 2003 were included in this retrospective data analysis. Of these, 206 were tested with the current MWF series and 155 with the historical MWF series. Among the current MWF allerg…

Chromated metal products may be hazardous to patients with chromate allergy.

Background:  Hidden allergen exposure may contribute to persistence and relapse of chromate dermatitis. According to case reports, chromated metal products, such as screws, fittings, etc., may be relevant allergen sources for patients sensitized to chromate. Objectives:  To examine concomitant patch test reactivity to potassium dichromate 0.5% petrolatum (pet.) and three different types of chromated metal rings. Patients/Methods:  Patients with proven or suspected chromate allergy were patch tested with potassium dichromate 0.5% pet. and three different types of chromated metal rings (yellow, olive, and black). Hexavalent chromium Cr(VI) release from the patch tested rings was chemically an…

Patch testing with components of water-based metalworking fluids

Water-based metalworking fluids (MWFs) may cause both irritant and allergic contact dermatitis. Several well-known MWF allergens are available for patch testing, but considering the wide variety of possible components used in MWF, our diagnostic arsenal covers only a small part of potential allergens. We therefore selected 13 frequently used MWF components that might be sensitizers and had not yet been tested routinely. In 5 centres, 233 dermatitis patients with present or past occupational exposure to MWF were patch tested with this and other panels. Only 7 patients showed positive reactions to the study panel. Allergic reactions to the emulsifier diglycolamine [syn. 2-(2-aminoethoxy) etha…

Successful treatment of primary chronic osteomyelitis in SAPHO syndrome with bisphosphonates.

Summary The treatment of the painful osteomyelitis in patients with SAPHO syndrome (Synovitis, Acne, Pustulosis, Hyperostosis, Osteitis) is often a problem. A 53-year-old woman had experienced palmo-plantar pustular skin lesions for four years, and in the past two years complained about progressive breath-and movement-dependent pain of the sternum. On examination she had extensive palmoplantar pustules and a painful swelling in the area of the right sternoclavicular joint. The three-phase bone scintigraphy showed a strong focal enrichment in the right sternoclavicular joint and at the transition from the manubrium to the corpus sterni suggesting active osteo-chondritis. Initially prednisolo…