Cited by 47Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Formic acid is essential for immunohistochemical detection of aggregated intraneuronal Aβ peptides in mouse models of Alzheimer's disease

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Christensen, Ditte Z., Bayer, Thomas A., Wirths, Oliver·2009·Brain Research

Abstract

The staining protocols so far applied to study intracellular Abeta accumulation in human tissue have been inconsistent with varying use of heat and formic acid (FA) for antigen retrieval. Microwave heat treatment has been reported to enhance the staining of intraneuronal Abeta as compared to no or enzymatic pretreatment. FA is widely used to increase the staining of plaque pathology in AD, yet the effect of FA on intraneuronal Abeta staining has been reported to be low and similar to the effect of heat or even to counteract the enhancing effect of heat pretreatment on intraneuronal Abeta immunohistochemical detection. To overcome these inconsistencies, there is a need for optimization of the staining protocol for intraneuronal Abeta detection and more knowledge is required concerning the effects of the different antigen retrieval methods. In the present work, we optimized the staining protocol for intraneuronal Abeta in paraffin-embedded sections in relation to heat and FA using four different mouse models known to accumulate intraneuronal Abeta peptides. It was found that FA is essential for the staining of highly aggregated intraneuronal Abeta peptides in AD transgenic mouse tissue.

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Crossref · 10.1016/j.brainres.2009.09.014

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  • Postmortem interval, pre-treatments, counter-stains, fixation and post-fixation, detergent, and blocking solutions can influence interpretation of immuno-histochemistry, and also that of intraneuronal Aβ.

    “Postmortem interval, pre-treatments, counter-stains, fixation and post-fixation, detergent, and blocking solutions, all can influence interpretation of immuno-histochemistry, and also that of intraneuronal Aβ [34, 39].”

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Authors
Christensen, D. Z., Bayer, T. A., & Wirths, O.
Affiliations
University of Göttingen (DE)
Corresponding author
Wirths, Oliver
Venue
Brain Research
Publisher
Elsevier BV
Published
2009-11
Volume
1301
Pages
116-125
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2001167489
Cited by
47
References
51
Citations by year
2025: 4 · 2024: 1 · 2023: 1 · 2022: 13 · 2021: 2 · 2020: 2 · 2019: 3 · 2017: 5 · 2016: 2 · 2015: 3 · 2014: 1 · 2013: 3 · 2012: 2
FWCI
1.55
Type
journal article
Language
en
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • GoeScholar The Publication Server of the Georg-August-Universität Göttingen (Georg-August-Universität Göttingen) (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
formic acid, intraneuronal amyloid-beta, Alzheimer's disease, antigen retrieval, thermal pretreatment, paraffin sections, transgenic mouse model, amyloid-beta aggregation
MeSH terms
Alzheimer Disease, Analysis of Variance, Animals, Cell Count, Cerebral Cortex, Formates, Image Processing, Computer-Assisted, Immunohistochemistry, Mice, Transgenic, Microscopy, Fluorescence, Neurons, Staining and Labeling, Thalamus, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Paraffin Embedding, Tissue Fixation, Mice, CA1 Region, Hippocampal

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