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Titolo:
Exposures and health effects from inorganic agricultural dusts
Autore:
Schenker, M;
Indirizzi:
Univ Calif Davis, Sch Med, Agr Hlth & Safety Ctr, Dept Epidemiol & PreventMed, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 iol & PreventMed, Davis, CA 95616 USA
Titolo Testata:
ENVIRONMENTAL HEALTH PERSPECTIVES
, volume: 108, anno: 2000, supplemento:, 4
pagine: 661 - 664
SICI:
0091-6765(200008)108:<661:EAHEFI>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESPIRATORY SYMPTOMS; LUNG-FUNCTION; CALIFORNIA AGRICULTURE; PULMONARY-FUNCTION; SILICATE PNEUMOCONIOSIS; FARMERS; WORKERS; PREVALENCE; DISORDERS; MORTALITY;
Keywords:
agriculture; chronic bronchitis; COPD; dust; mineral; particles; pulmonary fibrosis; respiratory; silica;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Schenker, M Univ Calif Davis, Sch Med, Agr Hlth & Safety Ctr, Dept Epidemiol & PreventMed, 1 Shields Ave,TB168, Davis, CA 95616 USA Univ Calif Davis 1 Shields Ave,TB168 Davis CA USA 95616 16 USA
Citazione:
M. Schenker, "Exposures and health effects from inorganic agricultural dusts", ENVIR H PER, 108, 2000, pp. 661-664

Abstract

Most studies of respiratory disease from dust exposure in the agriculturalworkplace have focused on allergic diseases caused by inorganic dusts, specifically occupational asthma and hypersensitivity pneumonitis. Exposures to inorganic (mineral) dusts among farmers and farm workers may be substantial. Such exposures are most frequent in dry-climate farming regions. in such locations farming activities that perturb the soil (e.g., plowing, tilling) commonly result in exposures to farm operators of 1-5 mg/m(3) respirabledust and greater than or equal to 20 mg/m(3) total dust. The composition of inorganic dust in agriculture generally reflects the soil composition. Crystalline silica may represent up to 20% of particles, and silicates represent up to 80%. These very high concentrations of inorganic dust are likely to explain some of the increase in chronic bronchitis reported in many studies of farmers. Pulmonary fibrosis (mixed dust pneumoconiosis) has been reported in agricultural workers, and dust samples from the lungs in these cases reflect the composition of agricultural soils, strongly suggesting an etiologic role for inorganic agricultural dusts. However, the prevalence and clinical severity of these cases are unknown, and many exposures are to mixed organic and inorganic dusts. Epidemiologic studies of farmers in diversegeographic settings also have observed an increase in chronic obstructive pulmonary disease morbidity and mortality. It is plausible that agricultural exposure to inorganic dusts is causally associated with chronic bronchitis, interstitial fibrosis, and chronic obstructive pulmonary disease, but the independent contribution of mineral dusts beyond the effects of organic dusts remains to be determined.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 12:20:27