Biological effects of tremolite
نویسندگان
چکیده
منابع مشابه
Association of Tremolite Habit with Biological Potential: Preliminary Report
Tremolite is an amphibole mineral which occurs naturally in three distinct mor phological forms or mineral habits. It may occur as asbestos, splintery fibres or in mas sive crystalline deposits. Mineral habit is determined at the time of its crystallization and conversion to a different habit would require re-crystallization. The massive crystalline deposits, on crushing may yield elongated f...
متن کاملBiologic Tests of Tremolite in Hamsters
Some years ago, we began to test specially prepared samples of minerals for carcinogenicity and fibrogenicity by intrapleural injection into hamsters. In these tests, we found that we could get tumors resembling mesotheliomas by injecting preparations of chrysotile asbestos fibers, provided that we used large enough doses, and provided that we used preparations with large numbers of fibers long...
متن کاملMesothelioma in Cyprus: the role of tremolite.
There is a chrysotile mine in the central mountains of Cyprus but no other appreciable source of industrial asbestos. Hence the island was thought to offer ideal conditions to seek pure chrysotile induced mesothelioma. The first reported case was a village woman whose lung tissue contained amphibole asbestos fibres, which were later identified as tremolite. This began a search for the origin of...
متن کاملChronic effects of dietary exposure to amosite asbestos and tremolite in F344 rats.
Carcinogenesis bioassays of blocky (nonfibrous) tremolite and amosite asbestos alone or in combination with the intestinal carcinogen 1,2-dimethylhydrazine dihydrochloride (DMH) were conducted with male and female Fischer 344 rats. The minerals were administered at a concentration of 1% in pelleted diet for the entire lifetime of the rats starting with the dams of the test animals. One group of...
متن کاملInfrared and TEM characterization of amphiboles synthesized near the tremolite-pargasite join in the ternary system tremolite-pargasite-cummingtonite
High-resolution transmission-electron microscopy (HRTEM) and infrared spectroscopy (FTIR) analyses have been done on amphiboles near the join tremolite [Ca2Mg5Si8O22(OH)2 = TR]-pargasite [NaCa2Mg4Al3Si6O22(OH)2 = PG] in the ternary system tremolite-pargasite-cummingtonite [Mg7Si8O22(OH)2 = MC] that were synthesized previously by Sharma and Jenkins (1999). Representative samples across the join ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: British Journal of Cancer
سال: 1982
ISSN: 0007-0920,1532-1827
DOI: 10.1038/bjc.1982.61