Related Experiment Videos
[Aminoglycoside ototoxicity associated with mitochondrial DNA mutation]
1Department of Otolaryngology, First Hospital, Beijing Medical University, Beijing 100034.
Lin Chuang Er Bi Yan Hou Ke Za Zhi = Journal of Clinical Otorhinolaryngology
|February 5, 2003
Summary
A specific mitochondrial DNA mutation (1555A-->G) is linked to genetic susceptibility to aminoglycoside ototoxicity, causing hearing loss. This finding helps understand the molecular basis of drug-induced deafness.
Area of Science:
- Genetics
- Pharmacology
- Otolaryngology
Context:
- Aminoglycosides are common antibiotics.
- Ototoxicity is a known side effect.
- Genetic factors can influence susceptibility.
Purpose:
- To confirm the role of genetic factors in aminoglycoside-induced ototoxicity.
- To identify specific genetic mutations associated with this susceptibility.
Summary:
- Mitochondrial DNA (mtDNA) from 62 individuals in 9 families with aminoglycoside-induced deafness was analyzed.
- A specific mutation, 1555A-->G in the 12S rRNA gene of mtDNA, was found in 20 members across 5 families.
- This mutation is identified as the molecular basis for genetic susceptibility to aminoglycoside ototoxicity.
Impact:
- Provides a molecular explanation for inherited susceptibility to aminoglycoside ototoxicity.
- Informs genetic screening and personalized medicine approaches for patients receiving aminoglycosides.
- Suggests potential for identifying other genetic factors contributing to drug-induced deafness.