Abstract:
:We have used in situ hybridization with biotinylated oligonucleotide (antisense) probes and streptavidin-biotinylated alkaline phosphatase method to detect the amount of amyloid beta-protein mRNA in the paraffin-embedded and formalin-fixed brain samples of patients affected by Alzheimer's disease and those of non-affected controls. Instead of the expected specific binding to neuronal cytoplasm, the probes did constantly bind to neuritic senile plaques, the strongest binding being found in the hippocampus and the cerebral cortex. We have been able to constantly repeat this peculiar phenomenon with other (30-mer) oligonucleotide probes, e.g. the sense probes for beta-amyloid protein and those specific for human papillomavirus (HPV) 18- and c-erb B-2 mRNAs. Replacing the probe with water as a negative control lead to abolishment of the colour reaction, thus excluding the possibility of the non-specific staining being due to the detection system. This confirms that the oligonucleotide probe is essential for this binding phenomenon.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Syrjänen S,Heinonen O,Miettinen R,Paljärvi L,Syrjänen K,Riekkinen Pdoi
10.1016/0304-3940(91)90234-ksubject
Has Abstractpub_date
1991-09-02 00:00:00pages
89-91issue
1eissn
0304-3940issn
1872-7972pii
0304-3940(91)90234-Kjournal_volume
130pub_type
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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journal_title:Neuroscience letters
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