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[PMID]:26489943
[Au] Autor:Er M; Emri SA; Demir AU; Thorne PS; Karakoca Y; Bilir N; Baris IY
[Ad] Endereço:Ataturk Training and Research Hospital, Ankara, Turkey (Pulmonary Diseases Department). mukreminer@hotmail.com.
[Ti] Título:Byssinosis and COPD rates among factory workers manufacturing hemp and jute.
[So] Source:Int J Occup Med Environ Health;29(1):55-68, 2016.
[Is] ISSN:1896-494X
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: Prior studies have been performed on cotton textile plants throughout the world. This study was planned to identify the rate of byssinosis and chronic obstructive pulmonary disease (COPD) in hemp and jute workers and those who worked with both of them. MATERIAL AND METHODS: The study was realized in a factory which consecutively processed hemp and jute. The study enrollment included 266 people, 164 of whom were active workers and 102 were retired. A questionnaire, plain chest X-rays, physical examination and pulmonary function tests were performed. Dust levels were measured in various sections of the factory during 8 h work shifts. Endotoxin levels of various quality hemp fibers and dusts were measured. RESULTS: The rate of byssinosis (28.2%) was higher among the workers that who exposed to both jute and hemp dust. The frequency of chronic bronchitis in retired workers who previously smoked was higher (20%) as compared to currently smoking workers (17%). High dust levels were measured in some parts of the factory (mean (M) = 2.69 mg/m3). Working in dense dust areas, active smoking, being older than 40 years of age, being an ex-smoker, and working in the factory for a period exceeding 15 years were significantly associated with bronchitis and emphysema development. High endotoxin levels were determined for fine hemp dust (605 EU/mg), coarse hemp dust (336 EU/mg) and poor quality hemp fibers (114 EU/mg), whereas in fresh hemp stalks the level of endotoxin was determined to be lower (0.27 EU/mg). CONCLUSIONS: Because of high exposures to jute and hemp dusts that are associated with high byssinosis rates, personal protection and environmental hygiene is crucial to prevention of byssinosis.
[Mh] Termos MeSH primário: Bissinose/epidemiologia
Cannabis/efeitos adversos
Corchorus/efeitos adversos
Doenças Profissionais/epidemiologia
Doença Pulmonar Obstrutiva Crônica/epidemiologia
Indústria Têxtil/estatística & dados numéricos
[Mh] Termos MeSH secundário: Adulto
Bronquite/epidemiologia
Bronquite/etiologia
Bissinose/etiologia
Poeira
Feminino
Seres Humanos
Masculino
Meia-Idade
Doenças Profissionais/etiologia
Exposição Ocupacional/efeitos adversos
Exposição Ocupacional/estatística & dados numéricos
Doença Pulmonar Obstrutiva Crônica/etiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dust)
[Em] Mês de entrada:1604
[Cu] Atualização por classe:151022
[Lr] Data última revisão:
151022
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151023
[St] Status:MEDLINE


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[PMID]:26706959
[Au] Autor:Dutkiewicz J; Mackiewicz B; Lemieszek MK; Golec M; Milanowski J
[Ad] Endereço:Department of Biological Health Hazards and Parasitology, Institute of Rural Health, Lublin, Poland.
[Ti] Título:Pantoea agglomerans: a marvelous bacterium of evil and good.Part I. Deleterious effects: Dust-borne endotoxins and allergens - focus on cotton dust.
[So] Source:Ann Agric Environ Med;22(4):576-88, 2015.
[Is] ISSN:1898-2263
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:The ubiquitous Gram-negative bacterium Pantoea agglomerans (synonyms: Enterobacter agglomerans, Erwinia herbicola) is known both as an epiphytic microbe developing on the surface of plants and as an endophytic organism living inside the plants. The bacterium occurs also abundantly in plant and animal products, in the body of arthropods and other animals, in water, soil, dust and air, and occasionally in humans. From the human viewpoint, the role of this organism is ambiguous, both deleterious and beneficial: on one side it causes disorders in people exposed to inhalation of organic dusts and diseases of crops, and on the other side it produces substances effective in the treatment of cancer and other diseases of humans and animals, suppresses the development of various plant pathogens, promotes plant growth, and appears as a potentially efficient biofertilizer and bioremediator. P. agglomerans was identified as a predominant bacterium on cotton plant grown all over the world, usually as an epiphyte, rarely as pathogen. It is particularly numerous on cotton bract after senescence. During processing of cotton in mills, bacteria and their products are released with cotton dust into air and are inhaled by workers, causing respiratory and general disorders, usually defined as byssinosis. The most adverse substance is endotoxin, a heteropolymer macromolecule present in the outermost part of the cell wall, consisting of lipopolysaccharide (LPS) as a major constituent, phospholipids and protein. The numerous experiments carried out in last quarter of XXth century on laboratory animals and human volunteers supported a convincing evidence that the inhaled endotoxin produced by P. agglomerans causes numerous pathologic effects similar to those elicited by cotton dust, such as influx of free lung cells into airways and activation of alveolar macrophages which secrete mediators (prostaglandins, platelet-activating factor, interleukin-1, tumor necrosis factor) that cause accumulation of platelets in pulmonary capillaries initiating an acute and chronic inflammation resulting in endothelial cell damage and extravasation of cells and fluids into the lung interstitium. These changes cause bronchoconstriction, the decrement of lung function expressed as reduction of forced expiratory volume in one second (FEV1) and/or diffusion capacity, increase in the airway hyperreactivity and subjective symptoms such as fever, airway irritation and chest tightness. The conclusions from these experiments, performed mostly 2-3 decades ago, did not loose their actuality until recently as so far no other cotton dust component was identified as a more important work-related hazard than bacterial endotoxin. Though also other microbial and plant constituents are considered as potential causative agents of byssinosis, the endotoxin produced by Pantoea agglomerans and other Gram-negative bacteria present in cotton dust is still regarded as a major cause of this mysterious disease.
[Mh] Termos MeSH primário: Alérgenos/toxicidade
Bissinose/fisiopatologia
Fibra de Algodão
Poeira
Endotoxinas/toxicidade
Infecções por Enterobacteriaceae/fisiopatologia
Pantoea/fisiologia
[Mh] Termos MeSH secundário: Alérgenos/imunologia
Bissinose/imunologia
Bissinose/microbiologia
Poeira/análise
Infecções por Enterobacteriaceae/imunologia
Infecções por Enterobacteriaceae/microbiologia
Seres Humanos
Pantoea/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; REVIEW
[Nm] Nome de substância:
0 (Allergens); 0 (Dust); 0 (Endotoxins)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:151228
[Lr] Data última revisão:
151228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151229
[St] Status:MEDLINE
[do] DOI:10.5604/12321966.1185757


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[PMID]:25706449
[Au] Autor:Greenberg MI; Vearrier D
[Ad] Endereço:Division of Medical Toxicology, Drexel University College of Medicine , Philadelphia, PA , USA.
[Ti] Título:Metal fume fever and polymer fume fever.
[So] Source:Clin Toxicol (Phila);53(4):195-203, 2015 May.
[Is] ISSN:1556-9519
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: Inhalational exposure to metal-containing fumes generated by welding and related processes may result in the development of the clinical syndrome known as "metal fume fever." Polymer fume fever is a separate and distinct but related disorder that has been associated with inhalational exposure to specific fluorinated polymer products, such as polytetrafluoroethylene or Teflon(®). We undertook a review of the peer-reviewed medical literature as it relates to these two disease entities in order to describe their epidemiology, pathophysiology, clinical presentation, diagnosis, treatment, prevention, and prognosis. METHODOLOGY: We performed a search of the PubMed ( www.pubmed.com ) and Ovid MEDLINE (ovidsp.tx.ovid.com) databases for keywords "metal fume fever," "polymer fume fever," and "fume fever," covering the period 1946 to September 2014, which resulted in a total of 141 citations. Limiting the search to articles published in the English language yielded 115 citations. These 115 articles were manually reviewed for relevance. In addition, the reference lists in each article retrieved were reviewed for additional relevant references. This left 48 relevant citations. EPIDEMIOLOGY: Metal fume fever occurs most commonly as an occupational disease in individuals who perform welding and other metal-joining activities for a living. It is estimated that 1,500-2,500 cases of metal fume fever occur annually in the United States. Polymer fume fever was initially identified as an occupational disease but increased regulations have resulted in decreased incidence in the occupational setting. Overheating of Teflon(®)-coated cookware is one of the more common mechanisms for exposure. PATHOPHYSIOLOGY: While the precise pathophysiology associated with the development of metal fume fever is yet to be elucidated, suggested pathophysiologic mechanisms include pro-inflammatory cytokine release, neutrophil activation, and oxygen radical formation. The pathophysiologic mechanism for polymer fume fever has not been definitively elucidated but may involve similar mechanisms to those proposed for metal fume fever. CLINICAL PRESENTATION: Metal fume fever typically presents with generally non-specific complaints including influenza-like symptoms, fever, shaking chills, arthalgias, myalgias, headache, and malaise. Onset of symptoms typically occurs 4-10 h following the exposure to metal-containing fumes. While metal fume fever is typically benign and self-limited, severe cases of the disease have been reported. In patients with ongoing metal fume exposure over the course of a workweek, tachyphylaxis occurs resulting in improvement in symptoms over the course of the workweek and maximal symptoms occurring after an exposure-free period such as a weekend. The clinical presentation of polymer fume fever is indistinguishable from metal fume fever, with an exposure history being necessary to distinguish the two entities. DIAGNOSIS: Chest radiographs are typically normal in cases of metal fume fever and polymer fume fever; however, mild vascular congestion may be demonstrated and severe cases may feature diffuse patchy infiltrates. Laboratory studies are typically not necessary but may demonstrate leukocytosis with leftward shift or an elevated erythrocyte sedimentation rate. TREATMENT: The primary treatment for both metal fume fever and polymer fume fever is supportive and directed at symptom relief. Oral hydration, rest, and the use of antipyretics and anti-inflammatory medications (e.g., non-steroidal anti-inflammatory drugs and aspirin) are recommended. A careful workplace exposure assessment analysis conducted by an occupational medicine specialist or clinical toxicologist in concert with a qualified industrial hygienist should be performed. PREVENTION: A careful workplace exposure assessment including measurement of ambient zinc and other metal (e.g., chrome, nickel, copper and manganese) fume concentrations or concentrations of fluorocarbon polymer decomposition products at different locations within the workplace should be performed. PROGNOSIS: Metal fume fever is typically a benign and self-limited disease entity that resolves over 12-48 h following cessation of exposure. CONCLUSIONS: Metal and polymer fume fevers generally follow a benign course with spontaneous resolution of symptoms, though both have the potential to be serious, especially in those with significant preexisting cardiorespiratory disease.
[Mh] Termos MeSH primário: Bissinose/terapia
Metais/envenenamento
Doenças Profissionais/etiologia
Doenças Profissionais/terapia
Polímeros/envenenamento
Soldagem
[Mh] Termos MeSH secundário: Bissinose/epidemiologia
Bissinose/etiologia
Seres Humanos
Exposição por Inalação/efeitos adversos
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Metals); 0 (Polymers)
[Em] Mês de entrada:1505
[Cu] Atualização por classe:150330
[Lr] Data última revisão:
150330
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:150224
[St] Status:MEDLINE
[do] DOI:10.3109/15563650.2015.1013548


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[PMID]:25977736
[Au] Autor:Kitronza PL
[Ad] Endereço:Ecole de Santé Publique, Faculté de Médecine, Université de Liège, Belgique ; Faculté de Médecine, Université de Kisangani, Congo RD.
[Ti] Título:[Identification of occupational hazards in the textile industry in the Democratic Republic of Congo].
[Ti] Título:Identification des risques professionnels dans l'industrie textile en République Démocratique du Congo..
[So] Source:Pan Afr Med J;19:373, 2014.
[Is] ISSN:1937-8688
[Cp] País de publicação:Uganda
[La] Idioma:fre
[Mh] Termos MeSH primário: Doenças Profissionais/epidemiologia
Indústria Têxtil/estatística & dados numéricos
[Mh] Termos MeSH secundário: Bissinose/epidemiologia
Bissinose/etiologia
Fibra de Algodão
República Democrática do Congo/epidemiologia
Poeira
Poluição Ambiental/análise
Gossypium
Seres Humanos
Doenças Profissionais/etiologia
Serviços de Saúde do Trabalhador
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dust)
[Em] Mês de entrada:1511
[Cu] Atualização por classe:150518
[Lr] Data última revisão:
150518
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150516
[St] Status:MEDLINE
[do] DOI:10.11604/pamj.2014.19.373.4186


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[PMID]:25270009
[Au] Autor:Hinson AV; Schlünssen V; Agodokpessi G; Sigsgaards T; Fayomi B
[Ad] Endereço:Unit of Research and Training in Occupational Health and Environment, University of Abomey-Calavi, Benin. hinsvikkey@yahoo.fr.
[Ti] Título:The prevalence of byssinosis among cotton workers in the north of Benin.
[So] Source:Int J Occup Environ Med;5(4):194-200, 2014 Oct.
[Is] ISSN:2008-6814
[Cp] País de publicação:Iran
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Cotton is the main agricultural export product in Benin. Cotton dust is thus present in the air during the handling and processing of cotton. This dust contains a mixture of substances including ground up plant matter, fibres, bacteria, fungi, soil, pesticides, noncotton matter, and other contaminants. While cotton processing is decreasing in industrialized countries, it is increasing in developing countries. Cotton processing, particularly in the early processes of spinning, can cause byssinosis. OBJECTIVE: To determine the respiratory effects of cotton dust exposure among cotton mill workers in Benin. METHODS: In a cross-sectional study, 109 workers exposed to cotton dust and 107 unexposed workers were studied. The International Commission on Occupational Health (ICOH) questionnaire was used for data collection on respiratory symptoms. For each worker, crossshift pulmonary function was performed with a dry spirometer. Based on the severity of respiratory symptoms and spirometry byssinosis was defined and classified according to the criteria of Schilling, et al. RESULTS: The mean ± SD age of the exposed and unexposed workers was 46.3 ± 7.8 and 37.0 ± 8.3 years, respectively (p<0.001). The mean FEV1 predicted value for the exposed and unexposed workers was 76.3% and 77.3%, respectively. The prevalence of grade 3 byssinosis was 21.1% (95% CI: 13.4-28.9) in exposed workers and 8.4% (95% CI: 3.1-13.7) in unexposed workers (p=0.006). On Mondays, the exposed workers had more respiratory symptoms than unexposed workers; for grade 3 byssinosis, the prevalence was 13.8% in exposed and 4.7% in unexposed workers (p=0.011). CONCLUSION: The prevalence of respiratory symptoms and byssinosis among cotton mill workers in Benin is high and needs prompt attention of health care workers and policymakers.
[Mh] Termos MeSH primário: Bissinose/epidemiologia
Transtornos Respiratórios/epidemiologia
Indústria Têxtil/estatística & dados numéricos
[Mh] Termos MeSH secundário: Adulto
Benin/epidemiologia
Bissinose/fisiopatologia
Estudos Transversais
Poeira/análise
Feminino
Volume Expiratório Forçado/fisiologia
Seres Humanos
Masculino
Meia-Idade
Exposição Ocupacional/efeitos adversos
Exposição Ocupacional/análise
Prevalência
Transtornos Respiratórios/fisiopatologia
Inquéritos e Questionários
Capacidade Vital/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Dust)
[Em] Mês de entrada:1412
[Cu] Atualização por classe:151119
[Lr] Data última revisão:
151119
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:141002
[St] Status:MEDLINE


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[PMID]:24321634
[Au] Autor:Dube KJ; Ingale LT; Ingle ST
[Ad] Endereço:School of Environmental and Earth Sciences, North Maharashtra University, Jalgaon, Maharashtra, India. kjdube@gmail.com.
[Ti] Título:Respiratory impairment in cotton-ginning workers exposed to cotton dust.
[So] Source:Int J Occup Saf Ergon;19(4):551-60, 2013.
[Is] ISSN:1080-3548
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Dust generated during the handling and processing of cotton causes ill health of ginning workers. The purpose of this study was to determine the prevalence of respiratory symptoms among cotton-ginning workers. This study involved 188 workers of 10 cotton-ginning factories. Forced vital capacity (FVC), peak expiratory flow rate (PEFR), and forced expiratory volume in 1 s (FEV1) declined significantly with increasing duration of exposure (p < .001) of the cotton-ginning workers. Results of a standard respirator medical evaluation questionnaire indicated that, depending on duration of exposure, 51%-71% of cotton-ginning workers suffered from chest tightness, 55%-62% experienced chest pain, while 33%-42% of the workers reported frequent cough. Blood tests of the workers showed higher values of erythrocyte sedimentation rate, eosinophils, and white blood cells when exposure was longer. Byssinosis symptoms were observed among the workers. We recommend regular periodical medical check-ups, compulsory use of personal protective equipment, and proper ventilation at the workplace.
[Mh] Termos MeSH primário: Bissinose/epidemiologia
Poeira
Doenças Profissionais/epidemiologia
Indústria Têxtil
[Mh] Termos MeSH secundário: Adulto
Feminino
Seres Humanos
Índia/epidemiologia
Masculino
Meia-Idade
Exposição Ocupacional/efeitos adversos
Prevalência
Testes de Função Respiratória
Medição de Risco
Inquéritos e Questionários
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Dust)
[Em] Mês de entrada:1402
[Cu] Atualização por classe:151119
[Lr] Data última revisão:
151119
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:131211
[St] Status:MEDLINE


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[PMID]:23527081
[Au] Autor:Zhang R; Zhao Y; Chu M; Mehta A; Wei Y; Liu Y; Xun P; Bai J; Yu H; Su L; Zhang H; Hu Z; Shen H; Chen F; Christiani DC
[Ad] Endereço:Department of Epidemiology and Biostatistics and Ministry of Education (MOE) Key Lab for Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.
[Ti] Título:A large scale gene-centric association study of lung function in newly-hired female cotton textile workers with endotoxin exposure.
[So] Source:PLoS One;8(3):e59035, 2013.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Occupational exposure to endotoxin is associated with decrements in pulmonary function, but how much variation in this association is explained by genetic variants is not well understood. OBJECTIVE: We aimed to identify single nucleotide polymorphisms (SNPs) that are associated with the rate of forced expiratory volume in one second (FEV1) decline by a large scale genetic association study in newly-hired healthy young female cotton textile workers. METHODS: DNA samples were genotyped using the Illumina Human CVD BeadChip. Change rate in FEV1 was modeled as a function of each SNP genotype in linear regression model with covariate adjustment. We controlled the type 1 error in study-wide level by permutation method. The false discovery rate (FDR) and the family-wise error rate (FWER) were set to be 0.10 and 0.15 respectively. RESULTS: Two SNPs were found to be significant (P<6.29×10(-5)), including rs1910047 (P = 3.07×10(-5), FDR = 0.0778) and rs9469089 (P = 6.19×10(-5), FDR = 0.0967), as well as other eight suggestive (P<5×10(-4)) associated SNPs. Gene-gene and gene-environment interactions were also observed, such as rs1910047 and rs1049970 (P = 0.0418, FDR = 0.0895); rs9469089 and age (P = 0.0161, FDR = 0.0264). Genetic risk score analysis showed that the more risk loci the subjects carried, the larger the rate of FEV1 decline occurred (P trend = 3.01×10(-18)). However, the association was different among age subgroups (P = 7.11×10(-6)) and endotoxin subgroups (P = 1.08×10(-2)). Functional network analysis illustrates potential biological connections of all interacted genes. CONCLUSIONS: Genetic variants together with environmental factors interact to affect the rate of FEV1 decline in cotton textile workers.
[Mh] Termos MeSH primário: Bissinose/etiologia
Endotoxinas
Interação Gene-Ambiente
Doenças Profissionais/etiologia
Exposição Ocupacional
Testes de Função Respiratória
Têxteis
[Mh] Termos MeSH secundário: Adolescente
Adulto
Epistasia Genética
Feminino
Volume Expiratório Forçado
Redes Reguladoras de Genes
Predisposição Genética para Doença
Seres Humanos
Meia-Idade
Polimorfismo de Nucleotídeo Único
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, P.H.S.
[Nm] Nome de substância:
0 (Endotoxins)
[Em] Mês de entrada:1309
[Cu] Atualização por classe:170403
[Lr] Data última revisão:
170403
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130326
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0059035


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[PMID]:21947877
[Au] Autor:Tahir MW; Mumtaz MW; Tauseef S; Sajjad M; Nazeer A; Farheen N; Iqbal M
[Ad] Endereço:Center for Population, Urban and Environment Studies, University of Gujrat, Gujrat, Pakistan. wajid.tahir@uog.edu.pk
[Ti] Título:Monitoring of cotton dust and health risk assessment in small-scale weaving industry.
[So] Source:Environ Monit Assess;184(8):4879-88, 2012 Aug.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The present study describes the estimation of particulate matter (cotton dust) with different sizes, i.e., PM(1.0), PM(2.5), PM(4.0), and PM(10.0 µm) in small-scale weaving industry (power looms) situated in district Hafizabad, Punjab, Pakistan, and the assessment of health problems of workers associated with these pollutants. A significant difference was found in PM(1.0), PM(2.5), PM(4.0), and PM(10.0) with reference to nine different sampling stations with p values <0.05. Multiple comparisons of particulate matter with respect to size, i.e. PM(1.0), PM(2.5), PM(4.0), and PM(10.0), depict that PM(1.0) differs significantly from PM(2.5), PM(4.0), and PM(10.0), with p values <0.05 and that PM(2.5) differs significantly from PM(1.0) and PM(10.0), with p values <0.05, whereas PM(2.5) differs non-significantly from PM(4.0), with a p value >0.05 in defined sampling stations on an average basis. Majority of the workers were facing several diseases due to interaction with particulate matter (cotton dust) during working hours. Flue, cough, eye, and skin infections were the most common diseases among workers caused by particulate matter (cotton dust).
[Mh] Termos MeSH primário: Poluentes Ocupacionais do Ar/análise
Fibra de Algodão
Poeira/análise
Têxteis
[Mh] Termos MeSH secundário: Adulto
Bissinose/epidemiologia
Monitoramento Ambiental
Monitoramento Epidemiológico
Seres Humanos
Exposição por Inalação/estatística & dados numéricos
Meia-Idade
Doenças Profissionais/epidemiologia
Exposição Ocupacional/estatística & dados numéricos
Paquistão
Medição de Risco
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants, Occupational); 0 (Dust)
[Em] Mês de entrada:1210
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:110928
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-011-2309-y


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[PMID]:20797932
[Au] Autor:Shi J; Mehta AJ; Hang JQ; Zhang H; Dai H; Su L; Eisen EA; Christiani DC
[Ad] Endereço:Department of Safety Engineering, China Institute of Industrial Relations, Beijing, China.
[Ti] Título:Chronic lung function decline in cotton textile workers: roles of historical and recent exposures to endotoxin.
[So] Source:Environ Health Perspect;118(11):1620-4, 2010 Nov.
[Is] ISSN:1552-9924
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Long-term occupational exposure to cotton dust that contains endotoxin is associated with chronic respiratory symptoms and excessive decline in forced expiratory volume in 1 sec (FEV1), but the mechanisms of endotoxin-related chronic airflow obstruction remain unclear. OBJECTIVE: In the current study, we examined temporal aspects of the exposure-response relationship between airborne endotoxin exposure, longitudinal change in FEV1, and respiratory symptoms in a cohort of Chinese cotton textile workers. METHODS: This prospective cohort study followed 447 cotton textile workers from 1981 to 2006. at approximately 5-year intervals. We used a generalized estimating equations approach to model FEV1 level and respiratory symptoms as a function of past exposure (cumulative exposure up to the start of the most recent 5-year survey interval) and cumulative exposure (within the most recent interval) to endotoxins, after adjusting for other covariates. Models were stratified by active versus retired work status and by years employed before the baseline survey (< 5 and > or = 5 years). RESULTS AND CONCLUSIONS: Past exposure to endotoxin was associated with reduced FEV1 level among retired cotton workers. Among all cotton workers, past exposure was more strongly associated with reduced FEV1 for those hired < 5 years before baseline than for those who were hired > or = 5 years after baseline. Recent endotoxin exposure was significantly associated with byssinosis, chronic bronchitis, and chronic cough.
[Mh] Termos MeSH primário: Poluentes Ocupacionais do Ar/análise
Fibra de Algodão
Endotoxinas/análise
Exposição por Inalação/estatística & dados numéricos
Pneumopatias/epidemiologia
Exposição Ocupacional/estatística & dados numéricos
[Mh] Termos MeSH secundário: Adulto
Bronquite Crônica/epidemiologia
Bissinose/epidemiologia
Tosse/epidemiologia
Feminino
Volume Expiratório Forçado
Seres Humanos
Exposição por Inalação/análise
Masculino
Meia-Idade
Exposição Ocupacional/análise
Razão de Chances
Estudos Prospectivos
Testes de Função Respiratória
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, U.S. GOV'T, P.H.S.
[Nm] Nome de substância:
0 (Air Pollutants, Occupational); 0 (Endotoxins)
[Em] Mês de entrada:1105
[Cu] Atualização por classe:161019
[Lr] Data última revisão:
161019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:100828
[St] Status:MEDLINE
[do] DOI:10.1289/ehp.0901178


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[PMID]:20339150
[Au] Autor:Shi J; Hang JQ; Mehta AJ; Zhang HX; Dai HL; Su L; Eisen EA; Christiani DC
[Ad] Endereço:Harvard School of Public Health, 665 Huntington Avenue, Building 1-1407, Boston, MA 02115, USA.
[Ti] Título:Long-term effects of work cessation on respiratory health of textile workers: a 25-year follow-up study.
[So] Source:Am J Respir Crit Care Med;182(2):200-6, 2010 Jul 15.
[Is] ISSN:1535-4970
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:RATIONALE: The degree to which chronic respiratory health effects caused by exposures to cotton dust and endotoxin is reversible after cessation of textile work is unknown. OBJECTIVES: To investigate changes in lung function and respiratory symptoms after cessation of textile work and to determine whether past exposure to cotton dust and endotoxin or smoking history modify the associations. METHODS: We performed a prospective cohort study consisting of 447 cotton textile workers exposed to cotton dust and 472 unexposed silk textile workers, with a 25-year follow-up. Spirometry testing and respiratory questionnaires were conducted at 5-year intervals. Generalized estimated equations were used to model the average 5-year change in FEV(1) and odds ratios of respiratory symptom prevalence. MEASUREMENTS AND MAIN RESULTS: Years since cessation of textile work was positively associated with 11.3 ml/yr and 5.6 ml/yr gains in 5-year FEV(1) change for cotton and silk workers, respectively. Among male cotton workers, smokers gained more FEV(1) per year after cessation of exposure than did nonsmokers, and the risk of symptoms of chronic bronchitis and byssinosis was larger for smoking than for nonsmoking male cotton workers. CONCLUSIONS: Cessation of textile work was significantly associated with improvement in lung function and respiratory symptoms. The positive effect of work cessation was greater for cotton workers than for silk workers. For cotton workers, the improvement in lung function loss after cessation of textile work was greater among smokers, but no differences were observed for silk workers.
[Mh] Termos MeSH primário: Volume Expiratório Forçado
Exposição Ocupacional/efeitos adversos
Têxteis/efeitos adversos
[Mh] Termos MeSH secundário: Adulto
Bronquite/epidemiologia
Bissinose/epidemiologia
Tosse/epidemiologia
Dispneia/epidemiologia
Feminino
Seguimentos
Seres Humanos
Masculino
Meia-Idade
Estudos Prospectivos
Fumar/efeitos adversos
Fumar/epidemiologia
Espirometria
Indústria Têxtil
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL
[Em] Mês de entrada:1009
[Cu] Atualização por classe:161019
[Lr] Data última revisão:
161019
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:100327
[St] Status:MEDLINE
[do] DOI:10.1164/rccm.200903-0329OC



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