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Use of N,N-diacetylchitobiose in decreasing toxic effects of indoor air pollution by preventing oxidative DNA damage
Microbial Diversity Research Centre, Dr D Y Patil Biotechnology and Bioinformatics Institute, Dr D Y Patil Vidyapeeth, Pune, India.
Microbial Diversity Research Centre, Dr D Y Patil Biotechnology and Bioinformatics Institute, Dr D Y Patil Vidyapeeth, Pune, India.
Microbial Diversity Research Centre, Dr D Y Patil Biotechnology and Bioinformatics Institute, Dr D Y Patil Vidyapeeth, Pune, India.
Department of Microbiology, Savitribai Phule University of Pune, Pune, India.
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2016 (English)In: Biologia (Bratislava), ISSN 0006-3088, E-ISSN 1336-9563, Vol. 71, no 5, 505-515 p.Article in journal (Refereed) Published
Abstract [en]

Indoor air pollution occurs due to hazardous pollutants, such as tobacco smoke, pesticides and carbon oxides, sulphur oxides and nitrogen oxides arising from combustion of biomass fuels. Exposure to these pollutants results in respiratory conditions like asthma, chronic obstructive pulmonary disease, lung cancer, pneumonia and other lower respiratory infections. Several of these infections are a result of inflammation and oxidative stress. Here we demonstrate the ability of N,N-diacetylchitobiose in preventing oxidative DNA damage in peripheral blood mononuclear cells exposed to biomass smoke extracts and cigarette smoke extract. The cytotoxic effect of these pollutants was determined by trypan blue exclusion assay in peripheral blood mononuclear cells, where cytotoxicity in decreasing order was  garette > wood > sawdust > cowdung. Cytotoxicity could be due to single- and double-strand breaks in the DNA as a result of oxidative stress. Comet assay measures the extent of DNA damage in the cells exposed to toxic agents. When mononuclear cells were treated with N,N-diacetylchitobiose and later exposed to smoke extracts, the extent of DNA damage decreased by 44.5% and 57.5% as compared to untreated cells. The protection offered by N,N-diacetylchitobiose towards oxidative DNA damage was at par with quercetin, a popular herbal medicine. Glutathione-S-transferase activity was determined in mononuclear cells exposed to smoke extracts, where oxidative stress in cells exposed to cigarette smoke extract was maximum. The present study demonstrates for the first time the ability of N,N -diacetylchitobiose to alleviate the harmful effects of indoor air pollutants.

Place, publisher, year, edition, pages
Bratislava: Slovak Academy of Sciences , 2016. Vol. 71, no 5, 505-515 p.
Keyword [en]
Comet assay, indoor air pollution, biomass smoke, cigarette smoke, cytotoxicity
National Category
Environmental Sciences Immunology Microbiology
Research subject
Natural sciences
Identifiers
URN: urn:nbn:se:his:diva-12311DOI: 10.1515/biolog-2016-0075ISI: 000379818000006ScopusID: 2-s2.0-84976585373OAI: oai:DiVA.org:his-12311DiVA: diva2:932375
Projects
COPD-project funded by SIDA
Funder
Sida - Swedish International Development Cooperation Agency
Available from: 2016-06-01 Created: 2016-06-01 Last updated: 2016-12-15Bibliographically approved

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The full text will be freely available from 2017-08-01 08:39
Available from 2017-08-01 08:39

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Mandal, AbulEriksson, Cecilia
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