Search PubMed⌕ Search

Biomedical subjects

J Bignon

Publications and source records attributed to J Bignon.

At least 253 records · Page 14Linked to original sources
PubMedDate not supplied

Ferruginous bodies in sputum as an indication of exposure to airborne mineral fibers in the mesothelioma villages of Cappadocia.

The counts of ferruginous bodies (pulmonary-coated mineral fibers) in sputum samples from inhabitants in each of the two agricultural villages of Karain and Tusköy (Cappadocia, central Turkey) increased with subjects' age, whereas 94% of samples collected in the neighboring villages were free of ferruginous body. These findings are consistent with the previous hypothesis that the very high frequency of mesothelioma in Karain and Tusköy was related to exposure to airborne mineral fibers of natural origin.

Agricultural Workers' Diseases↗
PubMedDate not supplied

Epidemiologic investigation of respiratory effects related to environmental exposure to asbestos inside insulated buildings.

The respiratory effects of environmental pollution by asbestos inside university buildings were studied by comparing radiographic, clinical, and functional parameters among three groups of workers with different levels of exposure. Eight hundred and twenty-eight (828) people who worked for at least 15 yr in asbestos-insulated buildings and who were without known occupational exposure to asbestos (environmentally exposed group [EE]) were compared to a group of 252 workers with occupational exposure (occupationally exposed group [OE]), used as positive control; and to a group of 350 people with no known exposure to asbestos (nonexposed group [NE]), within the same university. After adjustment for confounding variables, no differences could be seen between groups EE and NE. Group OE exhibited a higher prevalence of pleural changes and lower lung functions than groups EE and NE.

Adult↗
PubMedDate not supplied

Asbestos fibers in wines: relation to filtration process.

Asbestos fibers were counted by using the transmission electron microscope in 42 wines from France and abroad. Fifteen samples were found to be significantly positive for chrysotile asbestos. Concentrations were in the range of 2--64 X 10(6) fibers per liter. Technical investigations showed that the abestos content of the wines was related to the process by which they were filtered. On the other hand, we found that abandoning the use of asbestos for filtering wines would not alter the wine from the enological point of view.

Asbestos↗
PubMedDate not supplied

[French mesothelioma register 1965-1978 (author's transl)].

A mesothelioma register was initiated in France in 1975 to record pathologists, cases diagnosed since 1965. These cases have been accepted as definite mesothelioma after histological reexamination by the mesothelioma panel. Histories of asbestos exposure have been recorded using a standardized questionnaire. Among 699 cases reported, 296 were confirmed and 79 excluded by the panel. Twenty per cent of cases were females. Tumour was located in the pleura in 96% of cases. Age at death was lower for the mesothelioma group than for the general population. A linear increase of annual incidence since 1965 has been observed. Mapping of cases showed irregular distribution with areas without any case. Distribution of cases according to asbestos exposure was the following: definite occupational history 50%, definite non-occupational 3%, possible occupational 31%, undiscovered 16%. Distribution of cases according to the latency period showed a two peaks-curve, median being 36 years. The obvious under-reporting of cases and the absence of control group greatly affected the validity of some results.

Adult↗