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    Wyświetlanie 1-4 z 4
    Tytuł:
    Letter to editor
    Autorzy:
    Cassini, Carina
    Calloni, Caroline
    Bortolini, Giovana
    Garcia, Solange C.
    Dornelles, Marco A.
    Henriques, João A.
    Erdtmann, Bernardo
    Salvador, Mirian
    Powiązania:
    https://bibliotekanauki.pl/articles/2180095.pdf
    Data publikacji:
    2012-06-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2012, 25, 3; 314-315
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure drop of filtering facepiece respirators: How low should we go?
    Autorzy:
    Kim, Jung-Hyun
    Roberge, Raymond J.
    Powell, Jeffrey B.
    Shaffer, Ronald E.
    Ylitalo, Caroline M.
    Sebastian, John M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2177016.pdf
    Data publikacji:
    2015-02-24
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    respirator
    filter
    oral breathing
    nasal breathing
    Opis:
    Introduction This study was undertaken to determine the mean peak filter resistance to airflow (R filter) encountered by subjects while wearing prototype filtering facepiece respirators (PRs) with low Rfilter during nasal and oral breathing at sedentary and low-moderate work rates. Material and methods In-line pressure transducer measurements of mean R filter across PRs with nominal R filter of 29.4 Pa, 58.8 Pa and 88.2 Pa (measured at 85 l/min constant airflow) were obtained during nasal and oral breathing at sedentary and low-moderate work rates for 10 subjects. Results The mean R filter for the 29.4 PR was significantly lower than the other 2 PRs (p < 0.000), but there were no significant differences in mean R filter between the PRs with 58.8 and 88.2 Pa filter resistance (p > 0.05). The mean R filter was greater for oral versus nasal breathing and for exercise compared to sedentary activity (p < 0.001). Conclusions Mean oral and nasal R filter for all 3 PRs was at, or below, the minimal threshold level for detection of inspiratory resistance (the 58.8–74.5 Pa/l×s⁻¹), which may account for the previously-reported lack of significant subjective or physiological differences when wearing PRs with these low R filter. Lowering filtering facepiece respirator R filter below 88.2 Pa (measured at 85 l/min constant airflow) may not result in additional subjective or physiological benefit to the wearer.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2015, 28, 1; 71-80
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occupational risk assessment of oxidative stress and genotoxicity in workers exposed to paints during a working week
    Autorzy:
    Cassini, Carina
    Calloni, Caroline
    Bortolini, Giovana
    Garcia, Solange C.
    Dornelles, Marco A.
    Henriques, João A.
    Erdtmann, Bernardo
    Salvador, Mirian
    Powiązania:
    https://bibliotekanauki.pl/articles/2185389.pdf
    Data publikacji:
    2011-09-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    paint exposure
    Oxidative stress
    genotoxicity
    Opis:
    Objectives: Paints are complex mixtures of solvents and metals that can induce health damages in workers exposed to them. The aim of the present work was to evaluate possible oxidative and genotoxic effects in workers exposed to paints. Material and Methods: Peripheral blood and buccal cell samples were collected from 33 workers exposed to paints and 29 non-exposed workers (controls) during an ordinary working week (Monday morning and Friday evening). Oxidative markers were assessed using thiobarbituric acid assay, carbonylated proteins, superoxide dismutase and catalase activities. Hippuric acid and delta-aminolevulinic acid were determined as biomarkers of toluene and lead exposure, respectively. Genotoxicity was measured through comet assay and micronucleus (MN) frequencies. Results: The exposed group showed higher hippuric acid and delta-aminolevulinic acid levels (Friday samples) and lower superoxide dismutase activity (Monday samples) in relation to control group. DNA damage index (comet assay) was higher in the exposed group, both in Monday and Friday samples, compared to the control group. No differences were observed in frequency of micronuclei (MN) between the groups, either in lymphocytes or buccal cells. However, the exposed group presented an increase (Monday samples) in nuclear buds frequency in lymphocytes — a marker of gene amplification — as well as an increase in condensed chromatin in the buccal cells (Monday and Friday samples), suggesting induction of apoptosis. Furthermore, a decrease in the nuclear division index (Friday samples) was observed in the exposed group, indicating that paint exposure induces cytostatic effects in lymphocytes. Conclusion: The results suggest that individuals exposed to paints have increased levels of DNA damage.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2011, 24, 3; 308-319
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occupational exposure to trichloroethylene and cancer risk for workers at the Paducah Gaseous Diffusion Plant
    Autorzy:
    Bahr, Debra E.
    Aldrich, Timothy E.
    Seidu, Dazar
    Brion, Gail M.
    Tollerud, David J.
    Muldoon, Susan
    Reinhart, Nancy
    Youseefagha, Ahmed
    McKinney, Paul
    Hughes, Therese
    Chan, Caroline
    Rice, Carol
    Brewer, David E.
    Freyberg, Ronald W.
    Mohlenkamp, Adriane M.
    Hahn, Kristen
    Hornung, Richard
    Ho, Mona
    Dastidar, Aniruddha
    Freitas, Samantha
    Saman, Daniel
    Ravdal, Hege
    Scutchfield, Douglas
    Powiązania:
    https://bibliotekanauki.pl/articles/2185472.pdf
    Data publikacji:
    2011-03-01
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    cohort study
    gaseous diffusion plant
    trichloroethylene
    Healthy Worker Effect
    Opis:
    Objective: The Paducah Gaseous Diffusion Plant (PGDP) became operational in 1952; it is located in the western part of Kentucky. We conducted a mortality study for adverse health effects that workers may have suffered while working at the plant, including exposures to chemicals. Materials and Methods: We studied a cohort of 6820 workers at the PGDP for the period 1953 to 2003; there were a total of 1672 deaths to cohort members. Trichloroethylene (TCE) is a specific concern for this workforce; exposure to TCE occurred primarily in departments that clean the process equipment. The Life Table Analysis System (LTAS) program developed by NIOSH was used to calculate the standardized mortality ratios for the worker cohort and standardized rate ratio relative to exposure to TCE (the U.S. population is the referent for ageadjustment). LTAS calculated a significantly low overall SMR for these workers of 0.76 (95% CI: 0.72–0.79). A further review of three major cancers of interest to Kentucky produced significantly low SMR for trachea, bronchus, lung cancer (0.75, 95% CI: 0.72–0.79) and high SMR for Non-Hodgkin’s lymphoma (NHL) (1.49, 95% CI: 1.02–2.10). Results: No significant SMR was observed for leukemia and no significant SRRs were observed for any disease. Both the leukemia and lung cancer results were examined and determined to reflect regional mortality patterns. However, the Non-Hodgkin’s Lymphoma finding suggests a curious amplification when living cases are included with the mortality experience. Conclusions: Further examination is recommended of this recurrent finding from all three U.S. Gaseous Diffusion plants.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2011, 24, 1; 67-77
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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