Ototoxicity of hydrocarbons present in gasoline: a literature review

ABSTRACT Purpose: to investigate the toxicity effects of major hydrocarbons present in gasoline on the auditory system and the related mechanisms of action. Methods: a literature review between 2005 and 2015 was conducted using LILACS, MEDLINE and SciELO, by combining descriptors and their respective terms in Portuguese, English and Spanish. Results: studies performed in humans and animals with hearing impairment, confirmed by morphological tests in rats, the influence of factors such as dose, duration, species and type of stimulus in hearing loss, and ineffective protection of workers by the threshold levels of exposure in the mixture of the compounds, were chosen. Conclusion: toluene is regarded as an ototoxic compound that damages outer hair cells in the middle region of the cochlea, with evidence of interaction with noise. Ethylbenzene and xylenes can be considered potentially ototoxic based on the results of animal studies. No sufficient data were found on benzene to form a conclusion.

Bibliographic Details

Main Authors:	Silva,Thais Fernandes da, Rodrigues,Daniela del Rosário Flores, Coutinho,Gilvânia Barreto Feitosa, Soares,Manuella, Almeida,Márcia Soalheiro de, Sarcinelli,Paula de Novaes, Mattos,Rita de Cássia Oliveira da Costa, Larentis,Ariane Leites, Matos,Giselle Goulart de Oliveira
Format:	Digital revista
Language:	English
Published:	ABRAMO Associação Brasileira de Motricidade Orofacial 2018
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-18462018000100110
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