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Nonmotor predictors of Parkinson’s dementia revealed

Nonmotor predictors of Parkinson’s dementia revealed

Researchers have identified nonmotor and nondopaminergic motor features that predict incident dementia in patients with Parkinson’s disease. [More]
Levodopa dose linked to malnutrition risk in Parkinson’s disease

Levodopa dose linked to malnutrition risk in Parkinson’s disease

The malnutrition often seen in patients with Parkinson’s disease could be partly an effect of levodopa medication, research suggests. [More]
‘Neuroprotective’ effects of smoking disputed

‘Neuroprotective’ effects of smoking disputed

The apparent neuroprotective effect of smoking may simply be because ease of quitting smoking is a marker of prodromal Parkinson’s disease, say researchers. [More]
Standard cognition test falls short in Parkinson’s disease patients

Standard cognition test falls short in Parkinson’s disease patients

There is a wide range of cognitive function, including dementia, among patients with Parkinson’s disease who are classed as cognitively normal on the Mini-Mental State Examination, research shows. [More]
Neuropsychiatric symptoms variable in early Parkinson’s disease

Neuropsychiatric symptoms variable in early Parkinson’s disease

The prevalence of neuropsychiatric symptoms is increased in patients with early Parkinson’s disease, although many remain stable over time, shows follow-up of the Parkinson’s Progression Markers Initiative. [More]
Baseline characteristics influence Parkinson’s disease course

Baseline characteristics influence Parkinson’s disease course

Motor progression in Parkinson’s disease is non-linear and occurs in three distinct phases, all of which are affected by baseline variables such as gender, age at diagnosis, disease subtype, cognitive status and motor score, study findings indicate. [More]
Nigral neuronal loss and α-synuclein pathology scrutinised in PD

Nigral neuronal loss and α-synuclein pathology scrutinised in PD

The severity of neurodegeneration and local burden of α-synuclein are closely coupled during disease progression in Parkinson’s disease, a post-mortem study has found. [More]
In vivo dopaminergic imaging strongly correlates with brain pathology

In vivo dopaminergic imaging strongly correlates with brain pathology

Striatal dopamine transporter binding, assessed using single-photon emission computed tomography, is strongly correlated with substantia nigra cell counts assessed at postmortem, say the authors of a study. [More]
Brain network measures placebo effects in Parkinson's disease patients

Brain network measures placebo effects in Parkinson's disease patients

Investigators at The Feinstein Institute for Medical Research have utilized a new image-based strategy to identify and measure placebo effects in randomized clinical trials for brain disorders. The findings are published in the August issue of The Journal of Clinical Investigation. [More]
Imaging biomarker proposed for Parkinson’s disease

Imaging biomarker proposed for Parkinson’s disease

Reduced off-medication connectivity in the basal ganglia network separates patients with early Parkinson’s disease from healthy controls with high accuracy, preliminary findings suggest. [More]
Parkinson's disease drug could also help people with phobias or PTSD

Parkinson's disease drug could also help people with phobias or PTSD

A drug used to treat Parkinson's disease could also help people with phobias or post-traumatic stress disorder (PTSD). Scientists of the Translational Neurosciences Research Center at Johannes Gutenberg University Mainz are currently exploring the effects of psychotherapy to extinguish fears in combination with L-dopa. [More]
Cardiac stress test findings normal in premotor Parkinson’s disease patients

Cardiac stress test findings normal in premotor Parkinson’s disease patients

People who go on to develop Parkinson’s disease do not perform significantly differently from normal controls on exercise stress testing, an Israeli study has found. [More]
Low accuracy of clinical diagnosis for early Parkinson’s disease

Low accuracy of clinical diagnosis for early Parkinson’s disease

About three-quarters of patients suspected to have early Parkinson’s disease eventually prove to have other conditions, a study shows. [More]
Scientists one step closer to understanding the causes of Parkinson's disease

Scientists one step closer to understanding the causes of Parkinson's disease

Scientists have taken a step closer to understanding the causes of Parkinson's disease, identifying what's happening at a cellular level to potentially help develop future treatments. [More]
DBS improves motor and non motor symptoms of patients with early Parkinson's disease

DBS improves motor and non motor symptoms of patients with early Parkinson's disease

Deep brain stimulation (DBS) has become a well-recognized non-pharmacologic treatment that improves motor symptoms of patients with early and advanced Parkinson's disease. [More]
Scientists use femtosecond lasers to tackle Parkinson's disease

Scientists use femtosecond lasers to tackle Parkinson's disease

Scientists are combining physics and neurobiology to tackle Parkinson's disease. The Okinawa Institute of Science and Technology Graduate University's Femtosecond Spectroscopy Unit and Neurobiology Research Unit, along with collaborators at the University of Otago, New Zealand are using lasers, nanotechnology and neuroscience to develop a new, versatile drug delivery system. [More]
Failing dopamine pump damages brain cells of patients with Parkinson's disease

Failing dopamine pump damages brain cells of patients with Parkinson's disease

A study group at the Medical University of Vienna's Centre for Brain Research has investigated the function of an intracellular dopamine pump in Parkinson's patients compared to a healthy test group. [More]
Increase in protein helps store dopamine and protects from Parkinson's disease

Increase in protein helps store dopamine and protects from Parkinson's disease

Researchers from Emory's Rollins School of Public Health discovered that an increase in the protein that helps store dopamine, a critical brain chemical, led to enhanced dopamine neurotransmission and protection from a Parkinson's disease-related neurotoxin in mice. [More]
Combination of effective drugs for Parkinson's disease controls symptoms of Rett syndrome in mice

Combination of effective drugs for Parkinson's disease controls symptoms of Rett syndrome in mice

IDIBELL researchers, led by the director of the Program for Epigenetics and Cancer Biology, ICREA researcher and Professor of Genetics at the University of Barcelona, Manel Esteller, have shown that a combination of effective drugs for Parkinson's disease in mice that are used as a model of human Rett syndrome reduces some of the symptoms associated with this disease. [More]
PD MED trial: Levodopa drug better for long-term treatment of newly diagnosed PD

PD MED trial: Levodopa drug better for long-term treatment of newly diagnosed PD

For long-term treatment of newly diagnosed Parkinson’s disease (PD), the old drug levodopa provides better mobility and a higher quality of life than the two main alternatives, dopamine agonists (DA) and monoamine oxidase type B inhibitors (MAOBI), according to the largest-ever trial of PD treatment (PD MED), published in The Lancet. [More]