Salicylate protects hearing and kidney function from cisplatin toxicity without compromising its oncolytic action

Geming Li, Su Hua Sha, Elena Zotova, Joseph Arezzo, Thomas R. Van De Water, Jochen Schacht

Research output: Contribution to journalArticlepeer-review

89 Scopus citations

Abstract

Salicylate has recently been demonstrated to protect against the auditory and vestibular side effects of aminoglycoside antibiotics. Similarities in the toxic mechanisms suggest salicylate as a treatment strategy to prevent the ototoxic side effects of cisplatin (CDDP). We first tested protection of the inner ear in Wistar rats receiving a single infusion of 16 mg CDDP/kg body weight with or without treatment with 100 mg/kg salicylate (bid) for 5 days beginning one day before the CDDP infusion. Cisplatin induced a threshold shift of more than 30 dB (at 14 kHz; measured by auditory evoked brain stem response) that was significantly reduced by salicylate. We then examined the protective potential of salicylate on the cochlea, peripheral nerves, and kidney in a rat model of breast cancer-Fisher344 rats implanted with highly metastatic MTLn3 breast cancer cells. Animals received 3 × 5 mg CDDP/kg (given every third day), and salicylate was administered at 100 mg/kg (bid) from 2 days before to 3 days after CDDP treatment. Salicylate significantly attenuated the CDDP-induced threshold shift from approximately 20 dB (at 16 and 24 kHz) to approximately 5 dB, and drastically reduced the loss of cochlear outer hair cells. Likewise, salicylate protected kidney function (measured as plasma blood urea nitrogen and creatinine levels) from CDDP toxicity. Protection of nerve conduction velocities of both sensory and motor nerves was minimal. The chemotherapeutic efficacy of CDDP on suppression of tumor mass and cancer cell metastasis remained unaffected by salicylate. The results suggest that administration of salicylate may become the basis of an effective therapeutic intervention against the ototoxic and nephrotoxic side effects associated with CDDP chemotherapy.

Original languageEnglish (US)
Pages (from-to)585-596
Number of pages12
JournalLaboratory Investigation
Volume82
Issue number5
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Molecular Biology
  • Cell Biology

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