Anxiety-like behavior induced by 6-OHDA animal model of Parkinson's disease may be related to a dysregulation of neurotransmitter systems in brain areas related to anxiety.

Anxiety-like behavior induced by 6-OHDA animal model of Parkinson's disease may be related to a dysregulation of neurotransmitter systems in brain areas related to anxiety. Behav Brain Res. 2019 May 26;:111981 Authors: Vieira JCF, Bassani TB, Santiago RM, de O Guaita G, Zanoveli JM, da Cunha C, Vital MABF Abstract Anxiety in Parkinson's disease may represent a physiological reaction to the development of other symptoms during disease progression. However, evidence suggests that the incidence of anxiety disorders in Parkinson's disease may be related to neurochemical changes. The present study addresses the question whether dopamine, noradrenaline and serotonin levels in brain structures related to Parkinson's disease and anxiety are responsible for anxiety-like behavior by using an animal model of parkinsonism based in the bilateral injection of the neurotoxin 6-hydroxydopamine (6-OHDA) in the substantia nigra pars compacta. For this, one day after the injection of 6-OHDA, the animals exhibited hypolocomotion and a lower frequency of rearings in the open field test, which was spontaneously reversed on the last day of motor assessment (day 21). The 6-OHDA injection also induced anxiety-like behavior in the elevated plus maze and contextual fear conditioning test (day 21 and 24, respectively). Neurochemical analysis showed a reduction of dopamine and norepinephrine levels in the striatum, prefrontal cortex, and amygdala. In addition, while the serotonin le...
Source: Behavioural Brain Research - Category: Neurology Authors: Tags: Behav Brain Res 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
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