Antioxidant therapy attenuates oxidative stress in the blood of subjects exposed to occupational airborne contamination from coal mining extraction and incineration of hospital residues

Coal mining and incineration of solid residues of health services (SRHS) generate several contaminants that are delivered into the environment, such as heavy metals and dioxins. These xenobiotics can lead to oxidative stress overgeneration in organisms and cause different kinds of pathologies, inclu...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 19(2010), 7 vom: 07. Okt., Seite 1193-200
1. Verfasser: Wilhelm Filho, D (VerfasserIn)
Weitere Verfasser: Avila, S Jr, Possamai, F P, Parisotto, E B, Moratelli, A M, Garlet, T R, Inácio, D B, Torres, M A, Colepicolo, P, Dal-Pizzol, F
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Air Pollutants, Occupational Antioxidants Biomarkers Metals, Heavy Thiobarbituric Acid Reactive Substances Vitamin E 1406-18-4 Superoxide Dismutase mehr... EC 1.15.1.1 Glutathione Reductase EC 1.8.1.7 Glutathione GAN16C9B8O alpha-Tocopherol H4N855PNZ1 Ascorbic Acid PQ6CK8PD0R
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245 1 0 |a Antioxidant therapy attenuates oxidative stress in the blood of subjects exposed to occupational airborne contamination from coal mining extraction and incineration of hospital residues 
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520 |a Coal mining and incineration of solid residues of health services (SRHS) generate several contaminants that are delivered into the environment, such as heavy metals and dioxins. These xenobiotics can lead to oxidative stress overgeneration in organisms and cause different kinds of pathologies, including cancer. In the present study the concentrations of heavy metals such as lead, copper, iron, manganese and zinc in the urine, as well as several enzymatic and non-enzymatic biomarkers of oxidative stress in the blood (contents of lipoperoxidation = TBARS, protein carbonyls = PC, protein thiols = PT, α-tocopherol = AT, reduced glutathione = GSH, and the activities of glutathione S-transferase = GST, glutathione reductase = GR, glutathione peroxidase = GPx, catalase = CAT and superoxide dismutase = SOD), in the blood of six different groups (n = 20 each) of subjects exposed to airborne contamination related to coal mining as well as incineration of solid residues of health services (SRHS) after vitamin E (800 mg/day) and vitamin C (500 mg/day) supplementation during 6 months, which were compared to the situation before the antioxidant intervention (Ávila et al., Ecotoxicology 18:1150-1157, 2009; Possamai et al., Ecotoxicology 18:1158-1164, 2009). Except for the decreased manganese contents, heavy metal concentrations were elevated in all groups exposed to both sources of airborne contamination when compared to controls. TBARS and PC concentrations, which were elevated before the antioxidant intervention decreased after the antioxidant supplementation. Similarly, the contents of PC, AT and GSH, which were decreased before the antioxidant intervention, reached values near those found in controls, GPx activity was reestablished in underground miners, and SOD, CAT and GST activities were reestablished in all groups. The results showed that the oxidative stress condition detected previously to the antioxidant supplementation in both directly and indirectly subjects exposed to the airborne contamination from coal dusts and SRHS incineration, was attenuated after the antioxidant intervention 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Air Pollutants, Occupational  |2 NLM 
650 7 |a Antioxidants  |2 NLM 
650 7 |a Biomarkers  |2 NLM 
650 7 |a Metals, Heavy  |2 NLM 
650 7 |a Thiobarbituric Acid Reactive Substances  |2 NLM 
650 7 |a Vitamin E  |2 NLM 
650 7 |a 1406-18-4  |2 NLM 
650 7 |a Superoxide Dismutase  |2 NLM 
650 7 |a EC 1.15.1.1  |2 NLM 
650 7 |a Glutathione Reductase  |2 NLM 
650 7 |a EC 1.8.1.7  |2 NLM 
650 7 |a Glutathione  |2 NLM 
650 7 |a GAN16C9B8O  |2 NLM 
650 7 |a alpha-Tocopherol  |2 NLM 
650 7 |a H4N855PNZ1  |2 NLM 
650 7 |a Ascorbic Acid  |2 NLM 
650 7 |a PQ6CK8PD0R  |2 NLM 
700 1 |a Avila, S  |c Jr  |e verfasserin  |4 aut 
700 1 |a Possamai, F P  |e verfasserin  |4 aut 
700 1 |a Parisotto, E B  |e verfasserin  |4 aut 
700 1 |a Moratelli, A M  |e verfasserin  |4 aut 
700 1 |a Garlet, T R  |e verfasserin  |4 aut 
700 1 |a Inácio, D B  |e verfasserin  |4 aut 
700 1 |a Torres, M A  |e verfasserin  |4 aut 
700 1 |a Colepicolo, P  |e verfasserin  |4 aut 
700 1 |a Dal-Pizzol, F  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Ecotoxicology (London, England)  |d 1992  |g 19(2010), 7 vom: 07. Okt., Seite 1193-200  |w (DE-627)NLM098212214  |x 1573-3017  |7 nnns 
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