Possible combined effects of 900 MHZ continuous-wave electromagnetic fields and gentamicin on the auditory system of rats

Marta Parazzini, Paolo Galloni, Marta Piscitelli, Rosanna Pinto, Giorgio A. Lovisolo, Gabriella Tognola, Paolo Ravazzani, Carmela Marino

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Abstract

The aim of this study was to evaluate the cochlear functionality of Sprague-Dawley rats exposed to electromagnetic fields at 900 MHz and to gentamicin by distortion product otoacoustic emissions, which are a well-known indicator of the status of the cochlea's outer hair cells. A population of 32 rats was divided into four groups: group 1 was treated with daily intramuscular injections of 150 mg/kg body weight gentamicin for 15 days; group 2 was treated with daily intramuscular injections of 150 mg/kg body weight gentamicin for 15 days and exposed to electromagnetic fields; group 3 was exposed to electromagnetic fields; group 4 was sham-exposed. Rats were exposed 2 h/day, 5 days/week for 4 weeks at a local SAR of 4 W/kg in the ear (continuous wave at 900 MHz). Distortion product otoacoustic emissions tests were carried out before, during and after the combined exposure. The analysis of the data showed no subchronic exposure to electromagnetic fields on the inner auditory system of rats in either normal ears or ears exposed to a well-recognized pathological agent. © 2007 by Radiation Research Society.
Original languageEnglish
Pages (from-to)600 - 605
Number of pages6
JournalRadiation Research
Volume167
Issue number5
DOIs
Publication statusPublished - May 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Radiation
  • Biophysics
  • Radiology Nuclear Medicine and imaging

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