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Apolipoprotein-E genotyping in formalin-fixed and paraffin-embedded post-mortem brain tissue. | LitMetric

Apolipoprotein-E genotyping in formalin-fixed and paraffin-embedded post-mortem brain tissue.

Brain Pathol

Faculty of Biology Medicine and Health, School of Biological Sciences, Division of Neuroscience, The University of Manchester, Manchester, UK.

Published: September 2024

AI Article Synopsis

  • FFPE brain tissue in tissue banks is a valuable resource for research, especially with clinical data and psychological testing available.
  • APOE genotyping is crucial for understanding this tissue, but older FFPE samples may not provide reliable results.
  • The study found that DNA from FFPE brain tissue stored for more than three years may degrade, affecting APOE genotyping effectiveness.

Article Abstract

Formalin-fixed paraffin-embedded (FFPE) brain tissue held in tissue banks constitutes a valuable research resource, especially when associated with clinical annotations and longitudinal psychometric testing. Apolipoprotein-E (APOE) genotyping is important to fully characterise this resource, however older FFPE tissue may not be suitable for genotyping. We performed polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) assays on DNA extracted from post-mortem FFPE brain tissue ranging from 2-19 years old. A maximum of three years in paraffin was determined for robust APOE genotyping of FFPE tissue using PCR-RFLP which may suggest prolonged storage of fixed tissue as FFPE blocks may have deleterious effects on DNA.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11328341PMC
http://dx.doi.org/10.1111/bpa.13243DOI Listing

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