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Amplification of RNA from archival human temporal bone sections.
1Department of Otolaryngology, Hokkaido University School of Medicine, Sapporo, Japan.
The Laryngoscope
|April 14, 1999
Summary
Researchers can now detect RNA in old human temporal bone sections using reverse transcription polymerase chain reaction (RT-PCR). This breakthrough allows for better understanding of auditory, vestibular, and facial nerve diseases.
Area of Science:
- Otolaryngology
- Molecular Biology
- Genetics
Background:
- DNA amplification from celloidin-embedded human temporal bone sections via PCR is established for studying auditory diseases.
- Previous research has limited RNA detection in these archival tissues.
Purpose of the Study:
- To investigate the feasibility of amplifying RNA from archival celloidin-embedded human temporal bone sections using reverse transcription polymerase chain reaction (RT-PCR).
- To explore the potential of RNA analysis for understanding the pathogenesis of diseases affecting auditory, vestibular, and facial nerves.
Main Methods:
- Utilized formalin-fixed, decalcified, and celloidin-embedded human temporal bone sections dating from 1972 to 1986.
- Extracted nucleic acids and performed RT-PCR to detect human alpha-tubulin RNA.
- Employed nested PCR with specific primers to differentiate cDNA from genomic DNA.
Main Results:
- Successfully detected human alpha-tubulin RNA in 79% (11 of 14) of the analyzed temporal bone sections.
- RNA was detectable even in the oldest samples processed in 1972, indicating long-term preservation.
Conclusions:
- Archival celloidin-embedded human temporal bone sections are suitable for RNA analysis.
- RT-PCR is a viable method for detecting RNA in these historical specimens.