Secretory processing of amyloid precursor protein is inhibited by increase in cellular cholesterol content
نویسندگان
چکیده
منابع مشابه
amyloid precursor protein processing in alzheimer’s disease
how to cite this article: bhadbhade a, cheng dw. amyloid precursor protein processing in alzheimer’s disease. iranian journal of child neurology2012;6(1):1-5. alzheimer’s disease (ad) is a progressive neurodegenerative disorder and a leading cause of dementia. the ad is characterized by presence of intraneuronal tangles and extracellular plaques in the brain. the plaques are composed of dense a...
متن کاملInvestigation of the Iron Oxide Nanoparticle Effects on Amyloid Precursor Protein Processing in Hippocampal Cells
Introduction: Iron oxide nanoparticles (Fe2O3-NPs) are small magnetic particles that widely used in different aspects of biology and medicine in modern life. Fe2O3-NP accumulated in the living cells due to absence of active system to excrete the iron ions so damages cellular organelles by highly reactivity. Method: Herein cytotoxic effects of Fe2O3-NP with 50 nm size were investigated on prima...
متن کاملIron-Export Ferroxidase Activity of β-Amyloid Precursor Protein Is Inhibited by Zinc in Alzheimer's Disease
Alzheimer's Disease (AD) is complicated by pro-oxidant intraneuronal Fe(2+) elevation as well as extracellular Zn(2+) accumulation within amyloid plaque. We found that the AD β-amyloid protein precursor (APP) possesses ferroxidase activity mediated by a conserved H-ferritin-like active site, which is inhibited specifically by Zn(2+). Like ceruloplasmin, APP catalytically oxidizes Fe(2+), loads ...
متن کاملCholesterol decreases secretion of the secreted form of amyloid precursor protein by interfering with glycosylation in the protein secretory pathway.
Cerebral deposits of beta-amyloid (betaA) are a major feature in Alzheimer's disease. betaA is derived from amyloid precursor protein (APP). APP is subject to N- and O-glycosylation and undergoes a series of proteolytic cleavages that lead to the release of betaA or of a non-amyloidogenic secreted form of APP (APPs). We used primary neuronal and glial cultures to investigate how cholesterol aff...
متن کاملMetabotropic glutamate receptors increase amyloid precursor protein processing in astrocytes: inhibition by cyclic AMP.
Neurotransmitter receptors that increase phosphatidylinositol hydrolysis generate second messengers that activate protein kinase C. Here, we used metabotropic glutamate receptor agonists to increase both phosphatidylinositol hydrolysis and secretion of the soluble extracellular fragment of amyloid precursor protein (APPs) from cortical astrocyte cultures. The increase in APPs secretion was mimi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1997
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj3220893