التفاصيل البيبلوغرافية
| العنوان: |
HO-1 and VEGF gene expressions are time dependant during exposure to welding fumes |
| المؤلفون: |
Stark, M.1, Zubareb, J.1, Jacovovitz, R.2, Schwartz, Y.1, Lerman, Y.3,4, Grinberg, N.5, Fireman, E.1,4 fireman@tasmc.health.gov.il |
| المصدر: |
Cytokine. May2009, Vol. 46 Issue 2, p290-295. 6p. |
| مصطلحات موضوعية: |
*GENE expression, *OXYGENASES, *VASCULAR endothelial growth factors, *WELDING fumes, *OXIDATIVE stress, *CYTOKINES, *NEOVASCULARIZATION, *WELDERS (Persons), *HEALTH |
| مستخلص: |
Abstract: Hemeoxygenase-1 (HO-1) is a defensive enzyme against oxidative stress. Vascular epithelial growth factor (VEGF) is a potent cytokine which promotes angiogenesis. We used induced sputum (IS) technology to study HO-1 and VEGF expressions in neutrophilic inflammation in asymptomatic welders. Aircraft plant employees were divided into three groups: Welders 1 (n =30) had short-term exposure to aluminum/iron, Welders 2 (n =16) had long-term exposure to cadmium/chromium/iron/nickel, and controls (n =27 non-exposed individuals). Participants underwent pulmonary function tests (PFTs), IS, differential cell counts, and determination of particle size distribution in IS samples. HO-1 and VEGF gene expressions were analyzed by real-time polymerase chain reaction, and protein levels were measured by bilirubin reductase-dependant reaction and ELISA, respectively. All subjects had normal PFTs. Welders 2 had neutrophilic inflammation and higher percentages of particles between 2–5μ than the other groups. HO-1 inversely correlated with VEGF gene expression: HO-1 was significantly higher and VEGF was significantly lower in the Welders 1 group than in the other groups. There was a correlation between HO-1 expression and protein activity (r =0.33, P =0.05). Particulate matters significantly influenced HO-1 and VEGF gene expressions, caused neutrophilic inflammation and promoted oxidative stress in welders with long-term exposure. [Copyright &y& Elsevier] |
| قاعدة البيانات: |
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