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PubMedDate not supplied

Occupational cancer of the urinary bladder.

The occupational etiology of bladder cancer has been known for more than 70 yr. The best-known etiologic agents are aromatic amines such as 2-naphthylamine and benzidine. The proportion of bladder cancers due to occupational exposure varies with the industrialization of the area in question. In heavily industrialized countries occupational exposure may be associated with as much as 25% of cases in men. Industries with a confirmed or highly probable increased risk of bladder cancer are dyestuff and chemical manufacture, pigment and paint manufacture, cable manufacture, textile works (dyeing), leather works, the coal tar industry, and the gas industry. In addition to these relatively well established risk industries, a number of occupations have been shown to be associated with an increased risk of bladder cancer in epidemiologic studies. These include barbers, butchers, clerks, electricians, hairdressers, mechanics, medical occupations, metalworkers, painters, photographers, plumbers, shoemakers and shoe repairers, tailors, and textile workers. The etiologic agents in these occupations are obscure and it is difficult to know whether these associations are causal.

Epidemiologic Methods↗
PubMed1998

Evaluation of clothing systems to determine heat strain.

This article describes the basic evaluation process and test methodology employed when temperature extremes for clothing systems must be considered as part of the U.S. Army's Health Hazard Assessment for material in the development and acquisition process. The goals of the evaluation are to select clothing systems that minimize the hazards of heat strain and to predict the heat strain for persons wearing such clothing. Clothing evaluations begin with biophysical assessments that determine the thermal characteristics (vapor permeability and insulation) for textiles via guarded hot plate tests and for clothing systems via thermal manikin tests. The results from biophysical tests can be used to select the textile and/or clothing with the best thermal characteristics. The data from manikin evaluations also can be used in prediction modeling. Human physiological testing is best done in a controlled laboratory environment, although for realism and user acceptability field trials may also be conducted. Proven test and measurement methods must be employed, and tests must control for confounding variables; subjects serve as their own controls, and test environment and procedures are consistent between trials. The process and test methodology described can be applied to the evaluation of civilian clothing systems as well as to the military systems for which they were developed.

Hot Temperature↗
PubMed2005

Fungal types and concentrations from settled dust in normal residences.

Analysis of settled dust collected from carpeting and furnishings is occasionally used by investigators to determine whether an environment contains unusual fungi. Little information is available concerning the types and concentrations of culturable fungi present on textile surfaces in normal residential settings not affected by unusual mold reservoirs, such as from fungal growth sites within the built environment. This study presents the results of the collection and analysis of surface dust from 26 residential environments that were prescreened by interview, physical inspection, and air sampling to limit the surface dust collection to structures in which there was no history of water intrusion, flooding, plumbing leaks, signs of mold growth, or evidence of unusual airborne fungal spore types or concentrations. In those structures found to have no history or indications of water events or unusual fungi, surface dust was vacuumed from prescribed horizontal areas on carpet and textile-covered furnishings. These samples were then subjected to fungal culture, from which viable colonies were enumerated and identified. Based on the study results, it does not appear reasonable that the frequently quoted total fungi concentration exceeding 10(5) CFU/g is definitive evidence that a residential surface is contaminated with unusual amounts of culturable fungi. Collocated samples collected from eight side-by-side carpets sections revealed poor reproducibility. While settled dust sampling may be appropriate for determining the fungal status of a localized area, or as a gross screening tool, using settled dust results alone to establish the presence of unusual fungal types or concentrations within a structure appears to be inappropriate, and using settled dust results with other investigative methods, such as visual observations and air sampling, requires cautious interpretation.

Air Pollution, Indoor↗
PubMed1982

Gastroenteritis due to Norwalk virus: an outbreak associated with a municipal water system.

An outbreak of gastroenteritis lasting for one week in August 1980 affected approximately 1,500 persons in a community in northern Georgia. Investigation included a telephone survey of the community, a survey of textile plant employees and junior high and high school students and staff, and a neighborhood door-to-door survey. An association between gastrointestinal illness and consumption of drinking water was shown for community residents, students, and school staff. Attack rates (0-68%) determined in 10 neighborhoods increased significantly (P less than 0.001) with proximity to a textile plant, the site of one of two known cross-connections between an industrial water system (which contained fecal coliform bacteria) and the community water system. A fourfold rise in titer of antibody to Norwalk virus was found in 12 of 19 serum pairs from patients. Norwalk virus illness associated with drinking water from a large municipal water system has not been documented previously. Norwalk virus may be an important cause of waterborne morbidity in the United States.

Antibodies, Viral↗
PubMed1984

Work-related risk factors for laryngeal cancer.

The authors conducted a case-control study to identify employment-related risk factors for laryngeal cancer. Richmond County, Georgia, and the contiguous counties were chosen as the study area because the 1950-1969 laryngeal cancer mortality rate for white males in Richmond County was almost double the corresponding rate for the entire United States, and because a large proportion of the working population was employed in industries for which excess risk among workers had been reported. All persons with newly diagnosed squamous cell carcinoma of the larynx treated in the area hospitals were identified. Potential controls were selected from patients admitted to these hospitals during the same time period as the cases, excluding those patients admitted for cancer, lung disease, or employment-related disease. Eighty-five control subjects were individually matched to 42 cases for sex, age, area of residence, and smoking and alcohol-drinking history. From lifetime employment histories, laryngeal cancer rate ratios were estimated comparing the incidence rate among subjects who had ever worked in an occupation with the incidence rate among subjects who had never worked in that occupation. Among the 10 occupations in which at least 15 subjects had worked, the authors found rate ratio estimates above 3.0 for farmers, textile processors who separated, filtered or dried textile fibers, and for all laborers and maintenance personnel.

Adult↗
PubMed1990

Occupational risks of bladder cancer among white women in the United States.

The relation between occupation and bladder cancer in women was examined based on data collected during the National Bladder Cancer Study, a population-based, case-control study conducted in 10 areas of the United States. Occupational hazards among women have received little attention in previous bladder cancer studies, in part because most studies have included too few females to accurately estimate risks. In this large case-control study, 652 white female bladder cancer patients and 1,266 white female controls were interviewed to obtain lifetime occupational histories. Patterns of bladder cancer risk by occupation in women tended to be similar to those previously observed among men. Increased risk was apparent for women ever employed in metal working and fabrication occupations (relative risk (RR) = 1.5; 95% confidence interval (CI) 0.9-2.6). Within this summary occupation category, punch and stamping press operatives had a significant trend in risk with increasing duration of employment (p = 0.012); the RR for women employed 5 years or more was 5.6 (95% CI 1.4-26.4). The authors also observed an increased risk for women employed as chemical processing workers (RR = 2.1; 95% CI 0.9-5.1 = with a significant, contrast, a decreased risk was apparent for female textile workers (RR = 0.6; 95% CI 0.3-1.1) with a significant, negative trend in risk with increasing duration of employment (p = 0.031); the relative risk for textile workers employed 10 years or more was 0.4. The authors estimate that 11% of bladder cancer diagnosed among white women in the United States is attributable to occupational exposures; this percentage is considerably lower than the 21-25% previously reported for white men in this study.

Adult↗
PubMed1997

Traces of ricocheted action safety bullets.

Experimental gunshots were made with Action-1 and -3 ammunition (9 mm Luger) using a part dummy made of textile, pig skin, and gelatine as the target. After ricocheting off a concrete floor tile with impact angles of 15 degrees or 20 degrees, the deformed projectiles penetrated the gelatine block to a depth of between 21 and 37 cm. The ricochet angles varied between 5 degrees and 11 degrees. None of the bullets mushroomed after ricochet; a few bullets even overpenetrated. The ricocheted projectiles sprayed a substantial amount of copper particles onto the textile, and metallic fragments were also deposited along the bullet path. These traces were detected by high-resolution radiography. The Action-3 brass bullet was more resistant, had more kinetic energy, and was less deformed than the Action-1 copper bullet. The morphology of the wounds presented a very varied spectrum; round lesions were also observed. The results of the experimental study prove that ricocheted Action bullets present a serious risk of injury.

Animals↗
PubMed2004

A case-control study of parental occupation, leukemia, and brain tumors in an industrial city in Taiwan.

We conducted a case-control study in an industrial city in Taiwan to determine whether parents of newly diagnosed patients who were younger than 30 years old with leukemia or brain tumors or the patients themselves were more likely to have been employed in certain occupations or industries. Job histories were collected for parents (and for subjects if they worked) on 103 newly diagnosed cases of leukemia, 74 newly diagnosed cases of brain tumors, and 417 controls matched for age and sex. All jobs since the age of 16 that the subjects held for more than 6 months, a total of approximately 4,000 jobs, were coded for occupation and industry according the standard four-digit system used in Taiwan. Matched-pair analyses were performed comparing cases and controls among all jobs held by subjects and both parents using four-digit occupation and industry codes. Separate analyses also were performed for parental jobs held during the preconception, perinatal, and postnatal periods. Odds ratios (ORs) were adjusted for subject smoking, parental smoking, and exposure to medical radiation. Certain industry and occupation four-digit codes were significantly associated with increased odds ratios of childhood tumors. Including work during any or all periods, leukemias were more common in children of fathers who had worked (1) as wood treaters (adjusted OR 16.03, 95% confidence interval CI = 1.77-145.5), and (2) as building finishers and related trades workers (adjusted OR 4.08, 95% CI = 1.12-14.8), whereas brain tumors were more common in children of mothers who had worked (1) in electronic parts and components manufacturing (adjusted OR 13.78, 95% CI = 1.47-129.0) and 2) as textile and garment workers (adjusted OR 7.25, 95% CI = 1.42-37.0), as well as in subjects who had worked with certain electronic parts and components (adjusted OR 28.67, 95% CI = 2.88-285.6). Leukemias were more common in children of fathers who had worked in the preconception period (1) as wood treaters (adjusted OR 12.17, 95% CI = 1.36-109.2), (2) as building finishers and related trades workers (adjusted OR 4.08, 95% CI = 1.12-14.8), (3) as electronic equipment assemblers (adjusted OR 4.56, 95% CI = I 1.05-19.9), and (4) as certain other assemblers (adjusted OR 10.24, 95% CI = 1.02-102.6). In addition, leukemias were more common in children of fathers who had worked in the perinatal period (1) as wood treaters (adjusted OR 13.08, 95% CI = 1.36-125.5) and (2) as building finishers and related trades workers (adjusted OR 4.51, 95% CI = 1.04-19.6). Brain tumors were more common in children of mothers who had worked in the preconception period (1) in electronic parts and components manufacturing (adjusted OR 11.81, 95% CI = 1.20-116.3), and (2) as textile and garment workers (adjusted OR 7.25, 95% CI = 1.18-31.0).

Adolescent↗
PubMed2005

Flexible technologies and smart clothing for citizen medicine, home healthcare, and disease prevention.

Improvement of the quality and efficiency of healthcare in medicine, both at home and in hospital, is becoming more and more important for patients and society at large. As many technologies (micro technologies, telecommunication, low-power design, new textiles, and flexible sensors) are now available, new user-friendly devices can be developed to enhance the comfort and security of the patient. As clothes and textiles are in direct contact with about 90% of the skin surface, smart sensors and smart clothes with noninvasive sensors are an attractive solution for home-based and ambulatory health monitoring. Moreover, wearable devices or smart homes with exosensors are also potential solutions. All these systems can provide a safe and comfortable environment for home healthcare, illness prevention, and citizen medicine.

Biomedical Engineering↗
PubMed2006

What causes worsening of eczema? A systematic review.

BACKGROUND: Flares of eczema are attributed to many factors, often with minimal scientific evidence. OBJECTIVES: Systematically to search, summarize and critically appraise the scientific evidence to support the roles of individual 'flare factors' in eczema. METHODS: We searched Medline from 1966 until 20 April 2005 to identify relevant articles for inclusion in this review. No language restrictions were imposed. All study designs were included and were ranked according to the strength of evidence. Experimental and provocation studies were restricted to those using a double-blind design. We included randomized controlled trials if they were provocation studies. Meta-analysis was not possible due to differences in study populations and methodology. The studies are therefore described qualitatively. RESULTS: The roles of foodstuffs (13 studies), house dust mite (three), other aeroallergens (two), seasonality (two), bacterial infections (one), textiles (three), detergents (one), sunlight (one) and stress (two) were assessed in different study populations, using a variety of study designs. All studies were performed on selected groups and only four were longitudinal in design. Collectively, these studies provide some evidence that certain foods, house dust mite, stress and seasonal factors are relevant causes of disease worsening in certain subgroups with eczema. No good evidence could be found to support the role of detergents, textiles and irritants in causing worsening of eczema. CONCLUSIONS: Despite anecdotal lists in textbooks and review articles, very little good evidence exists for 'flare factors' in eczema. The focus of all of the included studies was on disease worsening rather than clinically relevant flares. Studies of longitudinal design are required to clarify the roles of these and other putative flare factors in eczema.

Allergens↗
PubMed1996

Note: microbial resistance of wool fabric treated with bis-Quats compounds.

In this paper, the antibacterial activity against Bacillus pumilus, Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa of the wool fabrics treated with new antimicrobial bis-quaternary surfactants, DABK and DABB, is studied. The activity was established on the basis of the agar diffusion and protective antibacterial test results and on the basis of scanning electron microscopy (SEM) observation. The results were compared with the HTAB, a monoquaternary surfactant of conventional use. The results from the agar diffusion and protective antibacterial tests do not enable us to confirm whether these compounds are potentially useful antimicrobial agents for the protection of textiles. However, SEM observations show clearly the efficacy of these compounds to protect the wool fabrics against the micro-organisms. SEM has been a useful technique for the assessment of antibacterial activity in textiles.

Animals↗
PubMed1997

Allergen-avoidance measures in homes of house-dust-mite-allergic asthmatic patients: effects of acaricides and mattress encasings.

This double-blind, placebo-controlled study investigated whether the application of an acaricide (Acarosan) on mattresses and on textile floor coverings in living rooms and bedrooms can contribute to improvement in lung function and airway hyperresponsiveness in 40 adult asthmatic patients sensitized to house-dust mite. In a second group of 19 patients who refused chemical intervention, the clinical effects of application of allergen-impermeable mattress encasings were studied. In all three treatment groups, Der p 1 levels in mattress dust were statistically significantly decreased after 12 months. However, this decrease was much greater in the group who received mattress encasings (final mean level 430 ng/g) than in groups with acaricide- or placebo-treated mattresses (final mean levels 1730 and 2100 ng/g, respectively). Treatment of textile floors with either Acarosan or placebo chemical caused a statistically significant decrease in the level of the house-dust-mite allergen Der p1 in floor dust. In the group with mattress encasings, no significant changes of floor dust Der p 1 were found. Airway hyperresponsiveness (as measured by the PC20 histamine) improved significantly in the mattress cover group after 6 months. The Acarosan group also showed a small but statistically significant improvement after 12 months.

Adult↗
PubMed2004

Total chemical synthesis and NMR characterization of the glycopeptide tx5a, a heavily post-translationally modified conotoxin, reveals that the glycan structure is alpha-D-Gal-(1-->3)-alpha-D-GalNAc.

The 13-amino acid glycopeptide tx5a (Gla-Cys-Cys-Gla-Asp-Gly-Trp*-Cys-Cys-Thr*-Ala-Ala-Hyp-OH, where Trp* = 6-bromotryptophan and Thr* = Gal-GalNAc-threonine), isolated from Conus textile, causes hyperactivity and spasticity when injected intracerebral ventricularly into mice. It contains nine post-translationally modified residues: four cysteine residues, two gamma-carboxyglutamic acid residues, and one residue each of 6-bromotryptophan, 4-trans-hydroxyproline and glycosylated threonine. The chemical nature of each of these has been determined with the exception of the glycan linkage pattern on threonine and the stereochemistry of the 6-bromotryptophan residue. Previous investigations have demonstrated that tx5a contains a disaccharide composed of N-acetylgalactosamine (GalNAc) and galactose (Gal), but the interresidue linkage was not characterized. We hypothesized that tx5a contained the T-antigen, beta-D-Gal-(1-->3)-alpha-D-GalNAc, one of the most common O-linked glycan structures, identified previously in another Conus glycopeptide, contalukin-G. We therefore utilized the peracetylated form of this glycan attached to Fmoc-threonine in an attempted synthesis. While the result-ing synthetic peptide (Gla-Cys-Cys-Gla-Asp-Gly-Trp*-Cys-Cys-Thr*-Ala-Ala-Hyp-OH, where Trp* =6-bromotryptophan and Thr* = beta-D-Gal-(1-->3)-alpha-D-GalNAc-threonine) and the native peptide had almost identical mass spectra, a comparison of their RP-HPLC chromatograms suggested that the two forms were not identical. Two-dimensional 1H homonuclear and 13C-1H heteronuclear NMR spectroscopy of native tx5a isolated from Conus textile was then used to determine that the glycan present on tx5a indeed is not the aforementioned T-antigen, but rather alpha-D-Gal-(1-->3)-alpha-D-GalNAc.

Carbohydrate Sequence↗
PubMed2005

Occupational bladder cancer in New Zealand: a 1-year review of cases notified to the New Zealand Cancer Registry.

AIM: To identify which cases of adult bladder cancer notified to the New Zealand Cancer Registry in 2001 had a probable occupational cause. METHODS: Occupational Safety and Health (OSH), in conjunction with the Massey University Centre for Public Health Research, interviewed and obtained an occupational history for 210 (162 men, 48 women) cases. RESULTS: Of the 162 male cases (response rate 65%), 45 (28%) were considered to be 'probable' occupational cancers. Of the 48 female cases (response rate 76%), three cases (6%) were considered to be 'probable' occupational cancers. The largest occupational group for men was truck drivers, which made up 51% of probable cases. Other common groups were engineering and metal workers (18%), crop farmers/orchardists (7%), textile and leather workers (7%), painters/furniture finishers (7%), and plastics manufacturing workers (4%). The three female cases considered to be of occupational origin included two textile workers and one telephonist. CONCLUSIONS: The percentage of cases considered to be of occupational origin is similar to that reported in Europe and the United States, indicating that occupational cancer is a major occupational health problem in New Zealand as it is in other parts of the world.

Female↗
PubMed1988

Allergic dermatoses and respiratory diseases from reactive dyes.

5 cases of occupational eczema, urticaria and respiratory disease from reactive dyes, occurring during 1977-1987, are reported. The patients, 4 men and 1 woman, were 24-52 years old when examined. They had been working in dye houses or textile plants, and had been exposed to reactive dyes for 8 months to 4 years before symptoms developed. Only 1 of the patients has been able to continue in the same occupation. On patch testing, the 4 patients with eczema reacted positively to 9 commercial dye powders. 2 patients reacted to the same dye, Remazol Schwarz B. On scratch and/or prick testing, the 2 patients who also had respiratory symptoms and/or urticaria reacted positively to the same dyes as on patch testing. The 5th patient, who had urticaria and respiratory symptoms, reacted positively to a dye, Remazol Gold Gelb RNL, but the patch test with that dye was negative. None of the patients was patch-test-positive to para-phenylenediamine (PPD) or to textile dye allergens in a series of organic dyes. Thus, the series of organic dyes has little value in the screening of allergy to reactive dyes. A 1% pet. dilution of commercial dye powder for patch testing and the same concentration in distilled water for prick testing seem to be suitable for the screening of allergy to reactive dyes.

Adult↗
PubMed1994

Screening of toxicity and genotoxicity in wastewater by the use of the Allium test.

Wastewater was collected from two municipal wastewater treatment plants and twelve different industries representing five lines of business (chemical, metallic, petrochemical, pulp- and paper, and textile dye industries). Effect on the growth of Allium roots was measured after five days of exposure. Growth inhibition values, EC50 and EC30, showed no toxic effect for eight of the fourteen plants. The most toxic effect was found in wastewater from one of the pulp- and paper plants. Allium root tip cells were analyzed for chromosome aberrations after 24 h of exposure. Wastewater from nine of the fourteen plants was able to induce chromosome aberrations at a statistically significant level. The textile dye industry was the only line of business which did not show any genotoxic effect. Three of the plants (municipal wastewater, metallic, and pulp- and paper) showed genotoxicity in spite of being nontoxic in the growth inhibition experiment.

Allium↗
PubMed1986

Ocular sarcoidosis. A case-control study among black patients.

A case-control study was conducted to investigate possible environmental risk factors for ocular sarcoidosis. The factors studied were exposures to pine products and occupational histories of employment in the tobacco, lumber, and textile industries. The exposure histories of 29 female and 15 male cases, patients with newly diagnosed ocular sarcoidosis that were attending the Glaucoma/Uveitis Clinic of the North Carolina Memorial Hospital, were compared to those of 110 female and 28 male controls selected from out-patient clinics. Elevated risks for sarcoidosis were detected among those females that were exposed to burning pine or were employed in the tobacco industry. For males, positive associations were observed for chewing pine products and for employment in the lumber and textile industries. These preliminary data are consistent with incomplete phagocytic clearance of nonbiodegradable foreign bodies present within our environment that may become antigenic to the immunologically susceptible host. Confirmation of refutation of these hypotheses awaits additional clinical and epidemiological research within the sarcoidosis belt.

Adolescent↗
PubMed1984

A Cytophaga species endotoxin as a putative agent of occupation-related lung disease.

A previous study suggested that a biologically active bacterial endotoxin was a putative agent of lung disease in a textile-producing facility. The endotoxin was isolated from the biomass growing in a chilled-water spray air humidification system. The bacterial flora of the air humidification system were isolated and taxonomically identified to the genus level. By using indirect immunofluorescence assays, a serologically reactive Cytophaga species was identified. A serologically reactive, biologically active (Limulus assay) endotoxin was purified from phenol extracts of the Cytophaga species. The endotoxin contained sugars, hexosamines, and lipids identical to those found in the humidifier biomass endotoxin. All subjects with biopsy-proven and suspected lung disease had antibodies directed toward the purified Cytophaga endotoxin. The data suggest that the Cytophaga endotoxin is the putative agent of lung disease in the textile facility.

Bacterial Infections↗

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