The first two authors contributed equally to data collection, analysis, and interpretation.
Head and Neck
Peripheral olfactory sensitivity in rodents after treatment with docetaxel†
Article first published online: 4 MAR 2010
Copyright © 2010 The American Laryngological, Rhinological, and Otological Society, Inc.
Volume 120, Issue 4, pages 690–697, April 2010
How to Cite
Faure, F., Da Silva, S. V., Jakob, I., Pasquis, B. and Sicard, G. (2010), Peripheral olfactory sensitivity in rodents after treatment with docetaxel. The Laryngoscope, 120: 690–697. doi: 10.1002/lary.20793
Presented in part at the 18th Annual Meeting of the European Chemoreception Research Organization, Portoroz, Slovenia, September 3–7, 2008; and at the 115th Annual Meeting of the the French Society of Oto-Rhino-Laryngology, Head and Neck Surgery, Paris, France, October 12–14, 2008.
- Issue published online: 22 MAR 2010
- Article first published online: 4 MAR 2010
- Manuscript Accepted: 28 OCT 2009
- French Minister of Research and Technology to S. Veloso Da Silva. Docetaxel was provided by Sanofi-Aventis/CNRS (France)
- Olfactory epithelium;
- docetaxel toxicity;
- anticancer treatment;
- body weight
Clinical studies have documented that cytotoxic chemotherapy is often associated with body weight loss and decreased enjoyment of food. Besides taste, olfaction plays a role in food intake. We assessed whether systemic chemotherapeutic cancer treatment compromises olfactory function in rats and mice treated with docetaxel (Taxotere; Sanofi-Aventis, Paris, France).
Randomized, controlled trials on mice and rats.
Male mice received a single and male rats either a single, two, or three docetaxel administrations. Olfactory function was tested by means of electroolfactograms (EOGs) from the chemosensory epithelium of the nasal septum and the endoturbinates. We evaluated and compared the magnitude of EOG responses evoked by different odorants recorded at different time points after treatment.
In both animal species, docetaxel administration reduced body weight gain, thus evidencing the general toxic effect of the drug. In both animal species, the olfactory mucosa remained responsive to stimulation of odorants during the whole course of experiment, but treatment revealed regional differences of docetaxel susceptibility and induced marked transitory electrophysiological changes. In mice and rats a significant transitory decrease in EOG response magnitude occurred after a single administration. Unexpectedly, in rats we also observed an increase of the olfactory response following the second administration of the drug.
Docetaxel exerts a neurotoxic effect on olfactory epithelia of rodents at doses similar to human doses, thus inducing transitory functional alterations. Although moderate, they are consistent with the hypothesis of a dysfunction of olfactory function. Further experiments are needed to elucidate the origin of the electrophysiological effects and their impact on the olfactory perception. Laryngoscope, 2010