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  • Title: Immunohistochemical studies on canine cerebral amyloid angiopathy and senile plaques.
    Author: Uchida K, Tani Y, Uetsuka K, Nakayama H, Goto N.
    Journal: J Vet Med Sci; 1992 Aug; 54(4):659-67. PubMed ID: 1391176.
    Abstract:
    Amyloid protein was isolated from the cerebral meninges of 4 aged dogs with cerebral amyloid angiopathy. By immunoblot analysis, antiserum against synthetic oligo-peptide consisting of 1-28 amino acid of amyloid beta protein recognized prominent wide band ranging from 14 to 18 kilodalton (kd). When amyloid samples were solubilized by formic acid, the antiserum recognized lower molecular weight band ranging from 3 to 4 kd. Immunohistochemical studies on cerebral amyloid angiopathy and senile plaques were performed in 17 aged dogs. Anti-amyloid beta protein serum labeled amyloid deposits in cerebral vessel walls and senile plaques. Compact deposits of beta protein were detected in primitive or classical plaques. After using formic acid pretreatment, diffuse deposits of beta protein in the neuropil representing diffuse plaques were detectable. Classical and primitive plaques reacted with antiserum against glial fibrillary acidic protein, while not with antisera against alpha 1-antichymotrypsin, IgG and IgM. Amyloid deposits in the intestines of aged dogs examined, did not react with anti-amyloid beta protein serum.
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