ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1992.tb00034.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1992.tb00035.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

SynopsisA certain number of hairdressing parlour employers have been taken to court because their employees allegedly suffered from lung allergies caused by the vapours from PPD (paraphenylendiamine) which allegedly developed when applying hair dyes. These conclusions may be reached if the specific hazards of the rubber and particularly leather and fur dyeing industry are extrapolated as is widely reported in literature, to hairdressing employees. The purpose of this study is to assess the actual exposure rate to PPD vapours of hairdressing employees during a working day, on the basis of the type and characteristics of the salon (small, medium and large), the number of dye applications per day and the chemical‐physical characteristics of the oxidation dyes. The results prove that, even under the hypothesis of experimental conditions pushed to the extreme, it is not reasonable to speak of exposure to PPD through the lungs of hairdressing employee

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1992.tb00036.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

SynopsisThe method of Minor to visualize by iodine–starch–reaction the activity of sweat glands was used in combination with image‐analysis to quantify sweat‐secretion. Aqueous aluminium chlorohydrate solutions (ACH) (1, 2, 4, 8, 16%) were applied twice daily for 6 days to defined areas of the lower volar forearms. After 3 and 6 days of treatment perspiration was induced by thermal stress. The dark blue spots on top of active glands which are formed by iodine–starch–complexes were counted and their projection area was measured by an image analysing system. Increasing concentrations of ACH lower the number of active sweat glands, while the size of the dark spots is not dependent on the concentration of the active

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1992.tb00037.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

SynopsisNon‐saponifiable lipid fraction (ICSB) extracted from cocoa shell butter was solubilized in dimethylformamide (DMF) and analysed for its biological activity on growth of rat and human fibroblasts. Non‐saponifiables (10 μg ml−1) partially protected cells from toxicity of DMF (1%) and allowed the growth of fibroblasts cultivated in optimal conditions (10% fetal calf serum‐FCS, 37°C) or improved the survival of cells maintained in altered conditions (2.5% FCS, 35°C). At higher concentration (ICSB 50 μg ml−1, DMF 1%), the protective effect was suppressed. ICSB was fractionated by chromatography into four compounds: sterols, terpenic alcohols, tocopherols and hydrocarbons ± carotenoids. We found that biological activity of ICSB was mostly due to the major fraction cont

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1992.tb00038.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY