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Type: Artigo de periódico
Title: Effect Of Particles Of Ashes Produced From Sugarcane Burning On The Respiratory System Of Rats
Author: Ferreira L.E.N.
Muniz B.V.
Bittar T.O.
Berto L.A.
Figueroba S.R.
Groppo F.C.
Pereira A.C.
Abstract: The practice of burning sugarcane obtained by non-mechanized harvesting exposes workers and the people of neighboring towns to high concentrations of particulate matter (PM) that is harmful to health, and may trigger a series of cardiorespiratory diseases. The aim of this study was to analyze the chemical composition of the micro-particles coming from sugarcane burning residues and to verify the effects of this micro-particulate matter on lung and tracheal tissues. Micro-particulate matter (PM10) was obtained by dissolving filter paper containing burnt residues in NaCl solution. This material was instilled into the Wistar rats[U+05F3] nostrils. Histological analyses (hematoxylin and eosin - HE) of cardiac, lung and tracheal tissues were performed. Inflammatory mediators were measured in lung tissues by using ELISA. The chemical composition of the particulate material revealed a large quantity of the phthalic acid ester, high concentrations of phenolic compounds, anthracene and polycyclic aromatic hydrocarbons (PAH). Histological analysis showed a reduction in subjacent conjunctive tissue in the trachea, lung inflammation with inflammatory infiltrate formation and reduction of alveolar spaces and a significant increase (p<0.05) in the release of IL-1α, IL-1β, IL-6, and INF-γ in the group treated with PM10 when compared to the control group. We concluded that the burning sugarcane residues release many particles, which have toxic chemical compounds. The micro-particulate matter can induce alterations in the respiratory system.
Editor: Academic Press Inc.
Rights: fechado
Identifier DOI: 10.1016/j.envres.2014.07.030
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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