Dose-response Relationship of Morphologic Changes by Cisplatin and Radiation in Guinea Pig Cochleas.
- Author:
Sung Wan BYUN
1
;
Chun Dong KIM
;
Jong Woo CHUNG
;
Chong Sun KIM
Author Information
1. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Korea. chongkim@plaza.snu.ac.kr
- Publication Type:Original Article
- Keywords:
Cisplatin;
Radiation;
Ototoxicity;
Scanning electron microscope;
Guinea pig
- MeSH:
Animals;
Cisplatin*;
Cochlea*;
Drug Therapy;
Guinea Pigs*;
Guinea*;
Hair;
Head;
Hope;
Humans;
Models, Animal;
Neck;
Stereocilia;
Temporal Bone
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
1998;41(6):712-718
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND AND OBJECTIVES: Cisplatin or radiation have been widely used in the treatment of patients with head and neck cancers. However, their adverse effects such as ototoxicity and nephrotoxicity are serious considerations. This study was aimed to establish a dose-dependent response in an animal model, with the hope of contributing to research for prevention of ototoxicity in cancer patients treated with radiation or chemotherapy. MATERIAL AND METHODS: Three different doses (4, 8, 12 mg/kg) of intraperitoneal cisplatin and radiation (17, 23, 33 Gy) were administered to guinea pigs. RESULTS: After 8 days, the temporal bones were prepared for scanning electron microscopic examination. The cochlear hair cells, especially outer hair cells in the third row, were severely damaged in the cisplatin groups and irradiation groups and these damages were related to the dose administered. The main abnormalities were the deletion or distortion of stereocilia of the hair cells and the loss of stiffness. CONCLUSION: A dose-dependent response relationship established in this study will provide as a useful reference for other researches for the prevention of ototoxicity by cisplatin and radiation.
