Cited by 67Molecular Biology Techniques and ApplicationsEthics in Clinical ResearchRNA Research and Splicing

Tissue preparation and banking

Webster, Maree J.·2006·Progress in Brain Research

Abstract

With the increasing application of genomic and proteomic technologies to the research of neurological and psychiatric disorders it has become imperative that the postmortem tissue utilized be of the highest quality possible. Every step of the research design, from identifying donors, acquiring sufficient information for accurate diagnosis, to assessing tissue quality has to be carefully considered. In order to obtain high-quality RNA and protein from the postmortem brain tissue a standardized system of brain collection, dissection, and storage must be employed and key ante- and postmortem factors must be considered. Reliable RNA expression and protein data can be obtained from postmortem brains with relatively long postmortem intervals (PMIs) if the agonal factors and acidosis are not severe. While pH values are correlated with RNA integrity number (RIN), a higher pH does not guarantee intact RNA. Consequently RNA integrity must be assessed for every case before it is included in a study. An analysis of anti- and postmortem factors in a large brain collection has revealed that several diagnostic groups have significantly lower pH values than other groups, however, they do not have significantly lower RIN values. Moreover, the lower pH of these groups is not entirely due to agonal factors and/or smoking, indicating that these subjects may have additional metabolic abnormalities that contribute to the lower pH values.

Integrity signals

Registry

Crossref · 10.1016/s0079-6123(06)58001-x

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  • Very few transcriptomic studies provide information on acute premortem variables or cause of death, which may potentially have a much larger effect on RNA quality and gene expression.

    “Additionally, very few transcriptomic studies provide information on acute premortem variables or cause of death, which are particularly important as they may potentially have a much larger effect on RNA quality and gene expression71–76,78–80.”

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Authors
Webster, M. J.
Affiliations
Uniformed Services University of the Health Sciences (US)
Corresponding author
Webster, Maree J.
Venue
Progress in Brain Research
Publisher
Elsevier
Published
2006
Volume
158
Pages
3-14
ISSN
0079-6123 (ISSN-L)
OpenAlex
W1499379327
Cited by
67
References
75
Citations by year
2025: 1 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 2 · 2018: 9 · 2017: 2 · 2016: 2 · 2015: 3 · 2014: 6 · 2013: 5 · 2012: 2
FWCI
6.66
Type
book chapter
Language
en
Open access
closed
Locations
  • Progress in brain research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Molecular Biology Techniques and Applications
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ethics in Clinical Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
Keywords
postmortem brain, tissue banking, RNA integrity number, postmortem interval, brain pH, acidosis, smoking, neurological disorders, mental illness
MeSH terms
Autopsy, Brain, Histological Techniques, Humans, Postmortem Changes, RNA, Tissue Banks

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