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The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure
BACKGROUND/AIMS: Ozone is an environmentally reactive oxidant, and pycnogenol is a mixture of flavonoid compounds extracted from pine tree bark that have antioxidant activity. We investigated the effects of pycnogenol on reactive nitrogen species, antioxidant responses, and airway responsiveness in...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Korean Association of Internal Medicine
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3604612/ https://www.ncbi.nlm.nih.gov/pubmed/23526176 http://dx.doi.org/10.3904/kjim.2013.28.2.216 |
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author | Lee, Min-Sung Moon, Kuk-Young Bae, Da-Jeong Park, Moo-Kyun Jang, An-Soo |
author_facet | Lee, Min-Sung Moon, Kuk-Young Bae, Da-Jeong Park, Moo-Kyun Jang, An-Soo |
author_sort | Lee, Min-Sung |
collection | PubMed |
description | BACKGROUND/AIMS: Ozone is an environmentally reactive oxidant, and pycnogenol is a mixture of flavonoid compounds extracted from pine tree bark that have antioxidant activity. We investigated the effects of pycnogenol on reactive nitrogen species, antioxidant responses, and airway responsiveness in BALB/c mice exposed to ozone. METHODS: Antioxidant levels were determined using high performance liquid chromatography with electrochemical detection. Nitric oxide (NO) metabolites in bronchoalveolar lavage (BAL) fluid from BALB/c mice in filtered air and 2 ppm ozone with pycnogenol pretreatment before ozone exposure (n = 6) were quantified colorimetrically using the Griess reaction. RESULTS: Uric acid and ascorbic acid concentrations were significantly higher in BAL fluid following pretreatment with pycnogenol, whereas γ-tocopherol concentrations were higher in the ozone exposed group but were similar in the ozone and pycnogenol pretreatment groups. Retinol and γ-tocopherol concentrations tended to increase in the ozone exposure group but were similar in the ozone and pycnogenol pretreatment groups following ozone exposure. Malonylaldehyde concentrations increased in the ozone exposure group but were similar in the ozone and pycnogenol plus ozone groups. The nitrite and total NO metabolite concentrations in BAL fluid, which parallel the in vivo generation of NO in the airways, were significantly greater in the ozone exposed group than the group exposed to filtered air, but decreased with pycnogenol pretreatment. CONCLUSIONS: Pycnogenol may increase levels of antioxidant enzymes and decrease levels of nitrogen species, suggesting that antioxidants minimize the effects of acute ozone exposure via a protective mechanism. |
format | Online Article Text |
id | pubmed-3604612 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | The Korean Association of Internal Medicine |
record_format | MEDLINE/PubMed |
spelling | pubmed-36046122013-03-22 The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure Lee, Min-Sung Moon, Kuk-Young Bae, Da-Jeong Park, Moo-Kyun Jang, An-Soo Korean J Intern Med Original Article BACKGROUND/AIMS: Ozone is an environmentally reactive oxidant, and pycnogenol is a mixture of flavonoid compounds extracted from pine tree bark that have antioxidant activity. We investigated the effects of pycnogenol on reactive nitrogen species, antioxidant responses, and airway responsiveness in BALB/c mice exposed to ozone. METHODS: Antioxidant levels were determined using high performance liquid chromatography with electrochemical detection. Nitric oxide (NO) metabolites in bronchoalveolar lavage (BAL) fluid from BALB/c mice in filtered air and 2 ppm ozone with pycnogenol pretreatment before ozone exposure (n = 6) were quantified colorimetrically using the Griess reaction. RESULTS: Uric acid and ascorbic acid concentrations were significantly higher in BAL fluid following pretreatment with pycnogenol, whereas γ-tocopherol concentrations were higher in the ozone exposed group but were similar in the ozone and pycnogenol pretreatment groups. Retinol and γ-tocopherol concentrations tended to increase in the ozone exposure group but were similar in the ozone and pycnogenol pretreatment groups following ozone exposure. Malonylaldehyde concentrations increased in the ozone exposure group but were similar in the ozone and pycnogenol plus ozone groups. The nitrite and total NO metabolite concentrations in BAL fluid, which parallel the in vivo generation of NO in the airways, were significantly greater in the ozone exposed group than the group exposed to filtered air, but decreased with pycnogenol pretreatment. CONCLUSIONS: Pycnogenol may increase levels of antioxidant enzymes and decrease levels of nitrogen species, suggesting that antioxidants minimize the effects of acute ozone exposure via a protective mechanism. The Korean Association of Internal Medicine 2013-03 2013-02-27 /pmc/articles/PMC3604612/ /pubmed/23526176 http://dx.doi.org/10.3904/kjim.2013.28.2.216 Text en Copyright © 2013 The Korean Association of Internal Medicine http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Lee, Min-Sung Moon, Kuk-Young Bae, Da-Jeong Park, Moo-Kyun Jang, An-Soo The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure |
title | The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure |
title_full | The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure |
title_fullStr | The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure |
title_full_unstemmed | The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure |
title_short | The effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure |
title_sort | effects of pycnogenol on antioxidant enzymes in a mouse model of ozone exposure |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3604612/ https://www.ncbi.nlm.nih.gov/pubmed/23526176 http://dx.doi.org/10.3904/kjim.2013.28.2.216 |
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