Scientists Investigate Cure for Parkinson’s Disease Associated Dementia

Ana de Barros, PhD avatar

by Ana de Barros, PhD |

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Parkinson's disease

Neuroscientists from the University of Adelaide are leading a first-of-its-kind study on a type of dementia commonly observed in patients with Parkinson’s disease, which the scientists hope lead to a potential new therapy. From September 1-7, 2015, during the Parkinson’s Awareness Week, the University of Adelaide’s School of Medicine’s Dr. Lyndsey Collins-Praino will be giving a talk about this form of dementia.

“Parkinson’s disease is characterised by four major motor symptoms: resting tremor, bradykinesia (slow movement), postural instability and rigidity. In addition to the motor impairments seen in Parkinson’s disease, many patients also suffer from some degree of cognitive impairment, which can range from mild impairment to dementia,” says Dr Collins-Praino.

“Within 20 years of diagnosis of Parkinson’s disease over 80% of patients develop dementia. Parkinson’s disease dementia, which includes a variety of behavioural and cognitive impairments, dramatically decreases the quality of a patient’s life. Current pharmacological therapies for Parkinson’s disease dementia have varying efficacy and may actually worsen some of the motor symptoms,” she says. “Despite the growing recognition of cognitive impairment in Parkinson’s disease, the brain mechanisms that underlie the development of these cognitive deficits are unknown.”

Dr. Collins-Praino will be managing a team of investigators in an attempt to establish a link between brain inflammation and the dementia seen in Parkinson’s disease patients.

“There is now a growing body of evidence that suggests inflammation in the brain may influence the development of cognitive impairment and dementia in Parkinson’s disease,” says Dr Collins-Praino. “While increases in inflammatory markers are usually thought to be associated with negative consequences for cognition, it is also possible that certain aspects of the inflammatory response may protect the brain from damage. To address whether particular inflammation may actually protect the brain against cognitive impairment in Parkinson’s disease, our lab has been comparing levels of inflammation in the brain in Parkinson’s patients with and without dementia.”

“We’ve made some exciting findings and once we have a sound understanding of what is going on in the brain of Parkinson’s sufferers, we’re hoping to target those pathways to develop an effective treatment for Parkinson’s disease dementia,” she added.