Nigrostriatal dopamine transporter availability, and its metabolic and clinical correlates in Parkinson ’s disease patients with impulse control disorders

AbstractPurposePrevious studies in patients with Parkinson ’s disease (PD) and impulse control disorders (ICDs) have produced heterogeneous results regarding striatal dopamine transporter (DaT) binding and activity in the mesocorticolimbic network. Our aim here was to study the relationship between striatal DaT availability and cortical metabolism, as wel l as motor, behavioural and cognitive features of PD patients with ICD.MethodsIn a group of PD patients with ICD (PD-ICD,n = 16) and 16 matched PD patients without ICD (PD-noICD,n = 16), DaT single-photon emission computed tomography (SPECT) imaging (DaTSCAN) was used to study DaT availability in predefined striatal volumes of interest (VOIs): putamen, caudate nucleus and ventral striatum (VS). In addition, the specific association of striatal DaT binding with cortical l imbic and associative metabolic activity was evaluated by18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) in PD-ICD patients and investigated using statistical parametric mapping (SPM8). Finally, associations between DaT availability and motor, behavioural and cognitive features were assessed.ResultsPD-ICD patients had a significantly lower DaT density in the VS than PD-noICD patients, which was inversely associated with ICD severity. Lower DaT availability in the VS was associated with lower FDG uptake in several cortical areas belonging to the limbic and associative circuits, and in other regions involved in...
Source: European Journal of Nuclear Medicine and Molecular Imaging - Category: Nuclear Medicine Source Type: research

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Depression and anxiety are common neuropsychiatric manifestations of Parkinson disease. However, they are often under-recognized because the somatic symptoms of depression often overlap with the motor symptoms of Parkinson disease and there is low self-reporting. Clinicians need to be vigilant about early detection and treatment of anxiety and depression in the patient with Parkinson disease. The development of new therapeutic strategies, including diet, exercise, and counseling along with antidepressants provide a holistic approach to management.
Source: Clinics in Geriatric Medicine - Category: Geriatrics Authors: Source Type: research
BACKGROUND: Identifying neuropsychiatric disorders is essential for prompt treatment to reduce morbidity. Among these disorders, anxiety and depression have been frequently associated with Parkinson disease (PD), particularly among elderly population. ...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Elder Adults Source Type: news
AbstractBackgroundPeople with Alzheimer's disease (AD) often have multimorbidity and take multiple medicines. Yet few studies have examined medicine utilization for comorbidities comparing people with and without AD.ObjectiveThe aim was to investigate the patterns of medication use for comorbidities in people with and without AD.MethodsAn Australian population ‐based study was conducted using the Pharmaceutical Benefits Scheme 10% sample of pharmacy claims data.People with ADwere defined as those dispensed medicines for dementia (cholinesterase inhibitors, memantine, or risperidone for behavioral and psychological sympto...
Source: Pharmacotherapy: The Journal of Human Pharmacology and Drug Therapy - Category: Drugs & Pharmacology Authors: Tags: Original Research Article Source Type: research
Conclusions: EDS did not worsen over 10 years, although other PD aspects did. EDS in PD seems to be a complex nonmotor symptom that is unrelated to deterioration of motor symptoms in PD. PMID: 31583073 [PubMed]
Source: Parkinsons Disease - Category: Neurology Tags: Parkinsons Dis Source Type: research
Abstract Neurodegeneration entails progressive loss of neuronal structure as well as function leading to cognitive failure, apathy, anxiety, irregular body movements, mood swing and ageing. Proteomic dysregulation is considered the key factor for neurodegeneration. Mechanisms involving deregulated processing of proteins such as amyloid beta (Aβ) oligomerization; tau hyperphosphorylation, prion misfolding; α-synuclein accumulation/lewy body formation, chaperone deregulation, acetylcholine depletion, adenosine 2A (A2A) receptor hyperactivation, secretase deregulation, leucine-rich repeat kinase 2 (LRRK2) ...
Source: Cellular and Molecular Neurobiology - Category: Cytology Authors: Tags: Cell Mol Neurobiol Source Type: research
CONCLUSIONS: DA therapy poses a high, previously underestimated risk of ICDs, especially in the form of hypersexuality in eugonadal men. PMID: 31580439 [PubMed - as supplied by publisher]
Source: The Journal of Clinical Endocrinology and Metabolism - Category: Endocrinology Authors: Tags: J Clin Endocrinol Metab Source Type: research
Authors: Kalyani HHN, Sullivan KA, Moyle G, Brauer S, Jeffrey ER, Kerr GK Abstract BACKGROUND: While dance may improve motor features in Parkinson's disease (PD), it is not yet clear if the benefits extend to non-motor features. OBJECTIVE: To determine whether dance classes based on Dance for PD ®, improve cognition, psychological symptoms and Quality of Life (QoL) in PD. METHODS: Participants were allocated to a Dance Group (DG; n = 17) or Control Group (CG: n = 16). Participants had early-stage PD (Hoehn &Yahr: DG = 1.6±0.7, CG = 1.5±0.8) with no cognitive impair...
Source: NeuroRehabilitation - Category: Rehabilitation Tags: NeuroRehabilitation Source Type: research
The objective of this study was to investigate if daily BLT, with a head-mounted device (Luminette®), has a beneficial effect on depression, anxiety, daytime sleepiness and fatigue in patients with PD. In this double-blind, placebo-controlled study, 16 patients with PD were randomized to receive either 1  month of BLT or 1 month of placebo therapy, separated by a 2-week washout period, in a crossover fashion. Patients completed questionnaires for the Hospital Anxiety and Depression Scale (HADS), the Epworth Sleepiness Scale (ESS) and the Fatigue Impact Scale (FIS) before and after each treatment p eriod. The ...
Source: Acta Neurologica Belgica - Category: Neurology Source Type: research
Condition:   Parkinson Disease Interventions:   Drug: NBTX-001;   Drug: Standard of Care Sponsor:   Nobilis Therapeutics Inc. Recruiting
Source: - Category: Research Source Type: clinical trials
Conclusion Taken together, evidence from animal and human studies demonstrates that the brain detects levels of circulating nutrients and hormones and consequently organizes an outward response that contributes to the regulation of whole-body glucose homeostasis. However, there are major knowledge gaps about the exact nature of this response and its relative importance compared to peripheral processes. As we have seen, animal studies have provided an anatomical map of CNS glucose regulation and have identified important neurons and neural circuits involved. Additionally, the CNS sensing of key nutrients and hormones has b...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
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