Decrease in 130 kDa- amyloid protein precursor protein (APP) and APP protein ratio in schizophrenia platelets.
Cognitive dysfunction is common among people with schizophrenia. The molecular substrates underlying this remain poorly understood. To address this, we analyzed changes in amyloid precursor protein (APP) in platelets of people with acute schizophrenia (n=24) and control subjects (n=20) by ECL-immunoblotting. APP bands corresponding to molecular masses of ∼130, ∼110 and ∼100 kDa, and the APP ratio (APPr: highest APP molecular mass vs lowest APP molecular mass bands) were quantified. The intensity of 130 kDa-APP and the APPr were significantly reduced in schizophrenia patients compared to control subjects. The age-associated decreases in the 130 kDa, ∼110 kDa proteins and APPr were present in patients, but not controls. Our results confirm peripheral APP metabolism is altered in people with schizophrenia. Further work is now warranted on a larger sample of diseased subjects with detailed cognitive assessment to determine the APP role in cognitive processing in schizophrenia, how it is related to severity and disease progression, as well as outcomes.
['Tereshkina|E B|EB|', 'Boksha|I S|IS|', 'Prokhorova|T A|TA|', 'Savushkina|O K|OK|', 'Burbaeva|G Sh|GS|', 'Morozova|M A|MA|', 'Mukaetova-Ladinska|E B|EB|']
D000293:Adolescent D000328:Adult D016564:Amyloid beta-Protein Precursor D015415:Biomarkers D001792:Blood Platelets D015331:Cohort Studies D005260:Female D006801:Humans D008297:Male D010865:Pilot Projects D010976:Platelet Count D012559:Schizophrenia D055815:Young Adult
APP Schizophrenia Platelets APPr Beta amyloid precursor protein