BACKGROUND Recent data showed that melanoma was more common among patients with Parkinson disease than individuals without Parkinson disease and vice versa. It has been hypothesized that these two diseases may share common genetic and environmental risk factors. METHODS We evaluated the association between single-nucleotide polymorphisms (SNP) selected on the basis of recent genome-wide assoc...

PURPOSE To evaluate the thickness of the 10 retinal layers in the paramacular area of Parkinson disease patients using a new segmentation technology of optical coherence tomography (OCT) to examine whether the thickness of specific layers predicts neurodegeneration or Parkinson disease severity. DESIGN Observational prospective study. METHODS Parkinson disease patients (n = 129) and age-mat...

Background & Aims: The purpose of this research was to study the protective effect of pretreatment with a voluntary exercise on hippocampal level of cerebral dopamine neurotrophic factor (CDNF) after damage induced by intraventricular injection of 6–hydroxydopamine (6-OHDA) in rats. Methods: In this experimental study, 24 Wistar rats were randomly divided into 4 groups of healthy control, healt...

Parkinson disease associated with farming and exposure to agricultural chemicals has been reported in numerous studies; little is known about Parkinson disease risk factors for those living in urban areas. The authors investigated the relation between copper, lead, or manganese emissions and Parkinson disease incidence in the urban United States, studying 29 million Medicare beneficiaries in th...

BACKGROUND AND PURPOSE Progressive changes in the substantia nigra pars compacta and locus ceruleus of patients with Parkinson disease and Alzheimer disease visualized by neuromelanin MRI and cardiac postganglionic sympathetic nerve function on (123)I-metaiodobenzylguanidine scintigraphy have not been fully evaluated. We compared the diagnostic value of these modalities among patients with earl...

background: parkinson’s disease (pd) is a progressive neurodegenerative disorder causing motor and non‑motor symptoms. the latter are common and include autonomic dysfunction, cognitive impairment, and sleep difficulties. many of the non‑motor aspects of pd such as sleep disturbance are more common and significantly affect the day‑to‑day activities of patients and their quality of life. the mos...

background & aim:parkinson's disease (pd) is a kind of disorder in the nervous system, which is characterized with multiple movement disorders. factors such as oxidative stress are the most important causes for the degeneration of dopaminergic neurons in the substantia nigra and occurrence of parkinson's disease. thus, medications that have antioxidant functions could be an interestin...

Parkinson disease is a progressive degenerative disease causing motor and non-motor symptoms. Sleep disturbance is a common non-motor symptom and significantly affect the day to day activities of patients and their quality of life. Though common, sleep disturbance is an under diagnosed feature of Parkinson disease (PD). Night-time sleep disturbances have been reported in as many as 60 to 98% of...