An investigation into the role of P-glycoprotein in Alzheimer's disease lesion pathogenesis
pmid: 21047545
An investigation into the role of P-glycoprotein in Alzheimer's disease lesion pathogenesis
The pathogenesis of Alzheimer's disease (AD) senile plaque (SP) and neurofibrillary tangle (NFT) lesions putatively involves a compromised blood-brain barrier (BBB). P-glycoprotein (P-gp) is a recognized BBB-related efflux transporter protein. In this investigation we determined the density of SP and NFT lesions and capillary densities stained positively for P-glycoprotein (P-gp), and other transport proteins, in AD and control group (CG) brain samples. Our results indicate that there are significant negative correlations (p<.01) between the densities of NFT and SP(40) lesions and P-gp positive capillaries in AD but not CG brain samples. Significant positive correlations (p<.01) were observed between the densities of P-gp positive capillaries and LRP and RAGE positive capillaries in both AD and CG brains. These results also suggest that the levels of capillary P-gp may contribute to AD lesion development and that the role of P-gp is associated with that of LRP and RAGE.
- McMaster University Canada
- Brock University Canada
- Hamilton Health Sciences Canada
Adult, Aged, 80 and over, Male, Receptor for Advanced Glycation End Products, Neurofibrillary Tangles, Plaque, Amyloid, Middle Aged, Immunohistochemistry, Capillaries, Alzheimer Disease, Blood-Brain Barrier, Humans, Female, ATP Binding Cassette Transporter, Subfamily B, Member 1, Receptors, Immunologic, Low Density Lipoprotein Receptor-Related Protein-1, Aged
Adult, Aged, 80 and over, Male, Receptor for Advanced Glycation End Products, Neurofibrillary Tangles, Plaque, Amyloid, Middle Aged, Immunohistochemistry, Capillaries, Alzheimer Disease, Blood-Brain Barrier, Humans, Female, ATP Binding Cassette Transporter, Subfamily B, Member 1, Receptors, Immunologic, Low Density Lipoprotein Receptor-Related Protein-1, Aged
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