Alveolar Macrophages and Lung Lesions after Combined Exposure to Nickel, Cobalt, and Trivalent Chromium
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چکیده
منابع مشابه
Alveolar macrophages and lung lesions after combined exposure to nickel, cobalt, and trivalent chromium.
In earlier inhalation exposures of rabbits, nickel increased the production of surfactant by type II cells, with secondary effects on morphology and function of alveolar macrophages. Cobalt induced mainly a nodular growth pattern of the type II cells. Trivalent chromium seemed to impair the capacity of macrophages to catabolize surfactant but did not affect the type II cells. We exposed rabbits...
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Background and Aim: High chipping rates of the veneering porcelain in zirconia ce-ramic restorations have been reported in many clinical studies. However, information on the bonding behavior of veneering porcelain to zirconia and lithium disilicate frameworks is limited. The purpose of this study was to evaluate the bond-ing strength of porcelain veneering to zirconia, lithium disilicate, nicke...
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Metals, especially nickel, are the most common contact allergens in children. Recent data has shown increased incidence of allergy in industrialized countries. Sensitization can occur at any age, even in neonates. Costume jewelry, particularly earrings, is linked to increased sensitization to nickel. Sensitization to cobalt often occurs by the use of costume jewelry. The most common source of s...
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Rabbits were exposed to 0.6 mg/m3 of nickel as NiCl2 for about one month. After exposure, alveolar macrophages were lavaged from the lung and divided into three fractions by elutriation. Laminated structures in the macrophages were related to fraction number so that the fractions with the largest cells contained the highest number of structures. The lysozyme activity decreased in unfractionated...
متن کاملExposure to cobalt chromium dust and lung disorders in dental technicians.
BACKGROUND Dental technician's pneumoconiosis is a dust-induced fibrotic lung disease of fairly recent origin. This study was carried out to estimate its occurrence in Sweden. METHODS Thirty seven dental technicians in central and south eastern Sweden with at least five years of exposure to dust from cobalt chromium molybdenum (CoCrMo) alloys, identified by postal survey, agreed to undergo ch...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1992
ISSN: 0091-6765
DOI: 10.2307/3431356