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Investigation of archived formalin-fixed paraffin-embedded pancreatic tissue with whole-genome gene expression microarray

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Authors:
  • Michelsen, Nete Vinstrup ;
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    Paediatrics, Department of Clinical Research, Faculty of Health Sciences, SDU
  • Brusgaard, Klaus ;
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    Human Genetics, Department of Clinical Research, Faculty of Health Sciences, SDU
  • Tan, Qihua ;
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    Orcid logo0000-0003-3194-0030
    Epidemiology, Biostatistics and Biodemography, Department of Public Health, Faculty of Health Sciences, SDU
  • Thomassen, Mads ;
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    Human Genetics, Department of Clinical Research, Faculty of Health Sciences, SDU
  • Hussain, Khalid ;
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    Great Ormond Street Children's Hospital NHS Trust and Institute of Child Health
  • Christensen, Henrik Thybo
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    Clinical Biochemistry, Department of Clinical Research, Faculty of Health Sciences, SDU
DOI:
10.5402/2011/275102
Abstract:
The use of formalin-fixed, paraffin-embedded (FFPE) tissue overcomes the most prominent issues related to research on relatively rare diseases: limited sample size, availability of control tissue, and time frame. The use of FFPE pancreatic tissue in GEM may be especially challenging due to its very high amounts of ribonucleases compared to other tissues/organs. In choosing pancreatic tissue, we therefore indirectly address the applicability of other FFPE tissues to gene expression microarray (GEM). GEM was performed on archived, routinely fixed, FFPE pancreatic tissue from patients with congenital hyperinsulinism (CHI), insulinoma, and deceased age-appropriate neonates, using whole-genome arrays. Although ribonuclease-rich, we obtained biologically relevant and disease-specific, significant genes; cancer-related genes; genes involved in (a) the regulation of insulin secretion and synthesis, (b) amino acid metabolism, and (c) calcium ion homeostasis. These results should encourage future research and GEM studies on FFPE tissue from the invaluable biobanks available at the departments of pathology worldwide.
Type:
Journal article
Language:
English
Published in:
Pathology, 2011, Vol 2011, Issue 275102
Main Research Area:
Medical science
Publication Status:
Published
Review type:
Peer Review
Submission year:
2011
Scientific Level:
Scientific
ID:
260749826

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