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Calcium Channels May Be Therapeutic Target in Parkinson’s, Stem Cell Study Suggests

Targeting specific calcium channels in dopamine-producing neurons may be a therapeutic target for Parkinson’s disease, according to research involving cells derived from Parkinson’s patients. The study, “T-type calcium channels determine the vulnerability of dopaminergic neurons to mitochondrial stress in familial Parkinson’s disease,” was published in Stem Cell…

Facial Expressions in Parkinson’s Patients Mirror Asymmetry Seen in Motor Symptoms, Study Says

Although no marked differences in the asymmetry of facial expressions distinguished Parkinson’s disease patients and healthy individuals in a study, patients most clearly expressed an emotional reaction on the side of the face corresponding to the side of the body less affected by Parkinson’s motor symptoms, a study found. Its researchers concluded patients’…

Parkinson’s Study Analyzes Levodopa‐induced Dyskinesia’s Effect on Sleep

When a person is awake, brain circuit activity is constantly “on.” This activity needs to be normalized during sleep. Researchers now report that neuronal activity in Parkinson’s disease patients with levodopa-induced dyskinesia fails to decrease during sleep. The study, “Levodopa-induced dyskinesia in Parkinson’s disease: sleep matters,” was published in…

Dopaminergic Medication Lowers Patients’ Sensitivity to Negative Outcomes in Learning, Study Shows

Dopaminergic medication (i.e., levodopa) for Parkinson’s disease appears to bring sensitivity to negative outcomes in learning down to normal levels, a new study shows. The study, “Dopaminergic medication reduces striatal sensitivity to negative outcomes in Parkinson’s disease,” was published in the journal bioRxiv. The ability to learn from trial…