Role of dust in the working environment in development of chronic bronchitis in British coal miners

Rogan, J. M.; Attfield, Michael D.; Jacobsen, Michael Hviid; Rae, S.; Walker, D. D.; Walton, W H

doi:10.1136/oem.30.3.217

Cited by 87 publications

(58 citation statements)

References 12 publications

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“…Much debate centred on whether this excess of respiratory disease was related to occupation or to other social differences. Subsequently the likelihood of having persistent productive cough,78 of having a low FEVY, 9 -12 and of suffering excessive loss of FEV, over a period'3 was shown to be influenced by a man's cumulative lifetime exposure to respirable dust, confirming that occupational exposure contributed to the excess of respiratory disease in coalminers.…”

mentioning

confidence: 69%

Respiratory ill health among coal miners and telecommunication workers in south Wales.

Lloyd¹,

Gauld²,

Soutar³

1986

Occupational and Environmental Medicine

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ABSTRACr As part of a large cross sectional epidemiological study of respiratory disease in coalminers, the respiratory health of miners in one colliery in south Wales has been compared with the health of nearby telecommunication (telecom) workers. The studies were carried out in 1981 and 1982. The answers to questionnaires on respiratory symptoms and results of lung spirometry indicate a much greater frequency of respiratory ill health among the miners than the telecom workers. The frequency of symptoms of chronic bronchitis among the current employees was 31% in the miners and 5% in the telecom workers, and these symptoms were reported as frequently by younger as by older miners. Reports of other respiratory symptoms showed similarly large differences between current miners and telecom workers. These differences were seen both within non-smoking and smoking groups. Comparisons of FEV, with predicted values (several different predictions were used) confirmed that the differences in reported symptoms were accompanied by differences in lung function; of the order of 20% of current miners had an FEVY less than 80% of predicted compared with 10% of current telecom workers. The excess of respiratory disease shown among these miners is not necessarily a consequence of the dust concentrations currently experienced underground, nor is the colliery necessarily representative of the coal industry generally. The findings, however, indicate the continued need for measures to improve the respiratory health of these men.Many studies of respiratory disease in British coalminers have shown an excess of chronic bronchitis and lower levels of lung function than in comparable groups.'6 The data for the most recent of these studies was collected in 1966, the least recent in 1949. Much debate centred on whether this excess of respiratory disease was related to occupation or to other social differences. Subsequently the likelihood of having persistent productive cough,78 of having a low FEVY, 9 -12 and of suffering excessive loss of FEV, over a period'3 was shown to be influenced by a man's cumulative lifetime exposure to respirable dust, confirming that occupational exposure contributed to the excess of respiratory disease in coalminers. borne respirable dust have been reduced progressively in British coalmines since 1970,16 and this has resulted in a reduction of the incidence of pneumoconiosis to about one third of that before 1970.'7 ' In view of these changes, and likely improvements in social conditions occurring over the past few decades, the general respiratory health of miners might be expected to have improved.We are at present conducting cross sectional epidemiological studies of selected miners from three collieries in Britain to establish among other things whether exposure to the respirable dust concentrations current in British mines still contributes to respiratory disease in exposed miners. The surveys are still in progress, but we are currently analysing the results from the first colliery, in south Wales. The diff...

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confidence: 69%

Respiratory ill health among coal miners and telecommunication workers in south Wales.

Lloyd¹,

Gauld²,

Soutar³

1986

Occupational and Environmental Medicine

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“…Many reports define PSDs ranging from 0Á7 to 5 lm for lyophilized spores to which silica was added as a fluidizing agent (Buttner et al 2001;Brown et al 2007;Baron et al 2008). Based on these data, our experience and that the respirable range is 1-5 lm (Rogan et al 1973), the DQO for count median diameter (CMD) of the PSD was justifiably defined as 2Á0 AE 1Á0 lm. Of numerous studies aerosolizing spores, only four reported using lyophilized spore powders.…”

Section: Introductionmentioning

confidence: 99%

Standard method for deposition of dry, aerosolized, silica-coated Bacillus spores onto inanimate surfaces

et al. 2014

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Aims: To evaluate a standard aerosolization method for uniformly depositing threat-representative spores onto surfaces. Methods and Results: Lyophilized Bacillus anthracis DSterne spores, coated in silica, were aerosolized into a containment chamber and deposited onto nine surface types by two independent laboratories. Laboratory A produced a mean loading concentration of 1Á78 9 10 5 CFU cm À2 ; coefficient of variation (CV) was <40% for 96% of samples. Laboratory B produced a mean loading concentration of 7Á82 9 10 6 CFU cm À2 ; 68% of samples demonstrated CV <40%. Conclusions: This method has been shown to meet the goal of loading threatrepresentative spores onto surfaces with low variability at concentrations relevant to the Department of Defense. Significance and Impact of the Study: As demonstrated in 2001, a biological attack using anthrax disseminated as a dry powder is a credible threat. This method will provide a means to load spores onto surfaces that mimic a 'realworld' scenario of an aerosolized anthrax attack. The method has utility for evaluating sporicidal technologies and for nondecontamination studies, for example fate and transport or reaerosolization.

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“…(4)(5)(6) Outros estudos (7)(8) destacaram a importância da associação entre a limitação crônica ao fluxo aéreo e a exposição prolongada a poeiras minerais. Em análise sobre estudos epidemiológicos de base populacional, de avaliação longitudinal da função pulmonar, de histopatologia com interesse na quantificação do enfisema e em estudos de mortalidade, procurou-se destacar a evidente relação causal entre a DPOC e as atividades, independentemente do tabagismo.…”

Section: Introductionunclassified

Doença pulmonar obstrutiva crônica ocupacional

Bagatin

Jardim

Stirbulov³

2006

J. bras. pneumol.

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Apesar da evidência inconteste da ação deletéria dos agentes inalados sobre o aparelho respiratório, especialmente na gênese das doenças pulmonares obstrutivas crônicas, os aerodispersóides, gerados nas mais diversas atividades produtivas, ainda são pouco reconhecidos como fatores etiológicos da doença pulmonar obstrutiva crônica (DPOC) ocupacional. A elaboração deste capítulo visa a alertar os médicos em geral, e especialmente os pneumologistas, sobre a possível etiologia ocupacional da DPOC. A história ocupacional, mesmo com um mínimo de detalhes, ainda não é prática habitual na elaboração da anamnese, o que compromete a formulação da hipótese diagnósti-ca. Muitos estudos evidenciam a interação entre a exposição aos agentes inalados, ambiental e ocupacionalmente, e as doenças respiratórias.Desde meados do século passado, com a denominação de bronquite industrial, essa enfermidade vem sendo discutida e ainda gera controvér-sias quanto a sua relação causal.O RESUMOA doença pulmonar obstrutiva crônica ocupacional, apesar de ampla discussão há quase meio século, ainda é muito pouco abordada em nosso meio. Diversos estudos, especialmente os de base populacional, revelaram a associação entre as exposições ocupacionais aos aerodispersóides e o comprometimento das vias aéreas. Este capítulo objetiva alertar para o diagnóstico da doença pulmonar obstrutiva crônica de origem ocupacional apresentando uma revisão suscinta sobre o tema que deverá ser incorporado ao projeto Global Initiative for Chronic Obstructive Lung Disease, tanto no seu escopo de fundamentação diagnóstica quanto em seu questionário específico. O detalhamento da história ocupacional e a caracterização da exposição a agentes inalatórios, de reconhecida ação deletéria para o aparelho respiratório, seguramente proporcionarão uma melhor abordagem para o reconhecimento, prognóstico e controle dessa doença.Descritores: Doenças ocupacionais; Exposição ambiental; Doença pulmonar obstrutiva crônica; Enfisema ABSTRACTOccupational chronic obstructive pulmonary disease, despite having been widely discussed for nearly half a century, is still rarely addressed in Brazil. Various studies, especially those that were population-based, have revealed the relationship between occupational exposure to aerosols and impairment of the airways. This chapter aims to remind physicians of the diagnosis of occupational chronic obstructive pulmonary disease by presenting a succinct review of the literature on the theme, which should be incorporated into the Global Initiative for Chronic Obstructive Lung Disease, in terms of the scope of the diagnostic basis as well as in terms of the questionnaire specific for the disease. Collecting detailed work histories and characterizing exposure to inhaled agents known to have deleterious effects on the respiratory system will surely result in improved approaches to making diagnoses and prognoses of this disease, as well as contributing to its greater control.

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Role of dust in the working environment in development of chronic bronchitis in British coal miners

Cited by 87 publications

References 12 publications

Respiratory ill health among coal miners and telecommunication workers in south Wales.

Respiratory ill health among coal miners and telecommunication workers in south Wales.

Standard method for deposition of dry, aerosolized, silica-coated Bacillus spores onto inanimate surfaces

Doença pulmonar obstrutiva crônica ocupacional

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