Beta amyloid and hyperphosphorylated tau deposits in the pancreas in type 2 diabetes

Document Type

Journal Article


Elsevier Inc.


Faculty of Computing, Health and Science


School of Exercise, Biomedical and Health Science / Centre of Excellence for Alzheimer's Disease Research and Care




This article was originally published as: Miklossy, J., Qing, H., Radenovic, A., Kis, A., Vileno, B., Laszlo, F., Miller, L., Martins, R. N., Waeber, G., Mooser, V., Bosman, F., Khalili, K., Darbinian, N., & McGeer, P. (2010). Beta amyloid and hyperphosphorylated tau deposits in the pancreas in type 2 diabetes. Neurobiology of Aging, 31(9), 1503-1515. Original article available here


Strong epidemiologic evidence suggests an association between Alzheimer disease (AD) and type 2 diabetes, To determine if amyloid beta (AP) and hyperphosphorylated tau occurs in type 2 diabetes, pancreas tissues from 21 autopsy cases (IO type 2 diabetes and 11 controls) were analyzed. APP and tau mRNAs were identified in human pancreas and in cultured insulinoma beta cells (INS~ I) by RT-PCR. Prominent APP and tau bands were detected by Western blotting in pancreatic extracts. Aggregated AB. hyperphosphorylated rau, ubiquilin, apolipoprotein E. apolipoprotein(a), IBI/JlP-1 and JNKI were detected in Langerhans islets in type 2 diabetic patients. AB was co-localized with amylin in islet amyloid deposits. In situ beta sheet formation of islet amyloid deposits was shown by infrared microspectroscopy (SIRMS). LPS increased APP in non-neuronal cells as well. We conclude that AP deposits und hyperphosphorylated tau are also associated with type 2 diabetes, highlighting common pathogenetic features in neurodegenerative disorders, including AD and type 2 diabetes und suggesting that AB deposits and hyperphosphorylated tau may also occur in other organs than the brain.




Link to publisher version (DOI)