Pre-treatment with amifostine protects against cyclophosphamide-induced disruption of taste in mice

PLoS One. 2013 Apr 23;8(4):e61607. doi: 10.1371/journal.pone.0061607. Print 2013.

Abstract

Cyclophosphamide (CYP), a commonly prescribed chemotherapy drug, has multiple adverse side effects including alteration of taste. The effects on taste are a cause of concern for patients as changes in taste are often associated with loss of appetite, malnutrition, poor recovery and reduced quality of life. Amifostine is a cytoprotective agent that was previously shown to be effective in preventing chemotherapy-induced mucositis and nephrotoxicity. Here we determined its ability to protect against chemotherapy-induced damage to taste buds using a mouse model of CYP injury. We conducted detection threshold tests to measure changes in sucrose taste sensitivity and found that administration of amifostine 30 mins prior to CYP injection protected against CYP-induced loss in taste sensitivity. Morphological studies showed that pre-treatment with amifostine prevented CYP-induced reduction in the number of fungiform taste papillae and increased the number of taste buds. Immunohistochemical assays for markers of the cell cycle showed that amifostine administration prevented CYP-induced inhibition of cell proliferation and also protected against loss of mature taste cells after CYP exposure. Our results indicate that treatment of cancer patients with amifostine prior to chemotherapy may improve their sensitivity for taste stimuli and protect the taste system from the detrimental effects of chemotherapy.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Amifostine / pharmacology*
  • Animals
  • Biomarkers / metabolism
  • Cell Count
  • Cell Cycle / drug effects
  • Cell Proliferation / drug effects
  • Cyclophosphamide / adverse effects
  • Cytoprotection*
  • Feeding Behavior / drug effects
  • Feeding Behavior / physiology
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Phospholipase C beta / metabolism
  • Taste / drug effects*
  • Taste Buds / drug effects*
  • Taste Buds / physiology
  • Taste Perception / drug effects*
  • Taste Perception / physiology

Substances

  • Biomarkers
  • Cyclophosphamide
  • Phospholipase C beta
  • Plcb2 protein, mouse
  • Amifostine