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Related Experiment Videos

Human postmortem brain tissue and 2-mm tissue microarrays.

Tarja Kauppinen1, Paula Martikainen, Irina Alafuzoff

  • 1Department of Neuroscience and Neurology, University of Kuopio, Kuopio, Finland.

Applied Immunohistochemistry & Molecular Morphology : AIMM
|August 26, 2006
PubMed
Summary

Tissue microarrays (TMAs) from human postmortem brain tissue were created. SuperFrost Plus slides minimized core sample loss, crucial for reproducible neuroimaging and neuropathology research.

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Area of Science:

  • Neuroscience
  • Pathology
  • Biotechnology

Background:

  • Tissue microarrays (TMAs) are valuable tools in biomedical research, enabling high-throughput analysis of tissue samples.
  • Human postmortem brain tissue presents unique challenges for TMA construction due to its delicate nature and potential for degradation.
  • Standardization of TMA protocols is essential for reliable results in neuropathology and neuroimaging studies.

Purpose of the Study:

  • To construct and evaluate human postmortem brain tissue microarrays (TMAs).
  • To assess factors influencing core sample retention and staining quality in brain TMAs.
  • To highlight the utility of brain TMAs for diverse neurological research applications.

Main Methods:

  • Construction of tissue microarray (TMA) blocks from human postmortem brain tissue.

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  • Inclusion of numerous 2 mm core samples from diverse anatomical regions.
  • Processing of TMA sections using various staining and pretreatment techniques, including immunohistochemistry (IHC).

    • Main Results:

    • Core sample loss varied from 2% to 100%, significantly reduced (2-8%) using SuperFrost Plus glass slides.
    • Demanding pretreatment procedures and long postmortem delays did not significantly increase sample loss.
    • Postmortem delay, brain region, and slide type had a slight influence on IHC staining quality and repeatability.

    Conclusions:

    • SuperFrost Plus slides are recommended for constructing human postmortem brain TMAs to minimize sample loss.
    • Brain TMAs can be reliably prepared even with demanding protocols or extended postmortem intervals.
    • The standardized coordinate system of the brain TMA facilitates identification of anatomical regions, enhancing its utility for researchers with varying neuroanatomy expertise.