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Multiple disease processes are associated with cognitive impairment in Parkinson disease (PD), including Lewy bodies, cerebrovascular disease, and Alzheimer disease. It remains unknown whether tau pathology relates to cognition in patients with PD without dementia.
This article was published in the following journal.
Name: JAMA neurology
Serotoninergic neurotransmission may modulate beta-amyloid peptide (Aβ) metabolism through up-regulation of alpha-secretase. Early Parkinson disease (PD) shows variable serotoninergic denervation, wh...
In 1164 cognitively unimpaired persons, aged 50-95 years, from the population-based Mayo Clinic Study of Aging, we examined the relationships of baseline cognition and cognitive changes across the fu...
Little is known about how different exercise modalities influence cognition in Parkinson's disease (PD). Moreover, the focus of previous investigations on examining the effects of exercise mainly on e...
While progressive MRI brain changes characterize advanced Parkinson's disease (PD), little has been discovered about structural alterations in the earliest phase of the disease, i.e. in patients with ...
In patients with Parkinson's disease (PD), management of non-motor symptoms, including cognitive and behavioural symptoms, is still a challenging need , which may be approached by various therapeut...
The primary aim of this study is to compare regional amyloid burden in Parkinson's disease (PD) to normal control subjects. It is hypothesized that there will be significant differences in...
The purpose of this study is to determine if changes in brain serotonin affects the accumulation of amyloid in the brain. The investigators will use brain imaging methods to measure the am...
The purpose of this study is to find out whether droxidopa, a medication that increases norepinephrine levels, may be effective in improving some aspects of cognition and movement in Parki...
The primary objective of this protocol is to investigate the monoaminergic (dopamine、serotonin、and norepinephrine ) nervous system and amyloid deposition in Parkinson's disease patient...
This study is to examine the possible effect of supplementing Magnesium sulfate on patients with Alzheimer Disease (AD) in controlling or reducing the amount of amyloid present in the brai...
Peptides generated from AMYLOID BETA-PEPTIDES PRECURSOR. An amyloid fibrillar form of these peptides is the major component of amyloid plaques found in individuals with Alzheimer's disease and in aged individuals with trisomy 21 (DOWN SYNDROME). The peptide is found predominantly in the nervous system, but there have been reports of its presence in non-neural tissue.
A precursor to the AMYLOID BETA-PROTEIN (beta/A4). Alterations in the expression of the amyloid beta-protein precursor (ABPP) gene, located on chromosome 21, plays a role in the development of the neuropathology common to both ALZHEIMER DISEASE and DOWN SYNDROME. ABPP is associated with the extensive extracellular matrix secreted by neuronal cells. Upon cleavage, this precursor produces three proteins of varying amino acid lengths: 695, 751, and 770. The beta/A4 (695 amino acids) or beta-amyloid protein is the principal component of the extracellular amyloid in senile plaques found in ALZHEIMER DISEASE; DOWN SYNDROME and, to a limited extent, in normal aging.
Amyloid P component is a small, non-fibrillar glycoprotein found in normal serum and in all amyloid deposits. It has a pentagonal (pentaxin) structure. It is an acute phase protein, modulates immunologic responses, inhibits ELASTASE, and has been suggested as an indicator of LIVER DISEASE.
Proteins associated with sporadic or familial cases of PARKINSON DISEASE.
A type of extracellularly deposited substance composed of an amyloid protein and additional components including HEPARAN SULFATE PROTEOGLYCAN; LAMININ; COLLAGEN TYPE IV; SERUM AMYLOID P-COMPONENT; and APOLIPOPROTEINS E which together form characteristic amyloid fibrils. The core of amyloid fibrils is formed by the stacking of overlapping beta-pleated sheet domains of the amyloid protein. There are many different amyloid proteins that have been found forming the core of the fibrils in vivo. However, amyloid can be formed from any protein that exposes beta-pleated strand conformations during unfolding or refolding. A common characteristic of amyloid is the ability to bind such dyes as CONGO RED and thioflavine.
Of all the types of Dementia, Alzheimer's disease is the most common, affecting around 465,000 people in the UK. Neurons in the brain die, becuase 'plaques' and 'tangles' (mis-folded proteins) form in the brain. People with Al...
Neurology - Central Nervous System (CNS)
Alzheimer's Disease Anesthesia Anxiety Disorders Autism Bipolar Disorders Dementia Epilepsy Multiple Sclerosis (MS) Neurology Pain Parkinson's Disease Sleep Disorders Neurology is the branch of me...