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non-motor symptoms in Parkinson's disease

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https://www.readbyqxmd.com/read/28922171/pancreatic-polypeptide-in-parkinson-s-disease-a-potential-marker-of-parasympathetic-denervation
#1
Karoline Knudsen, Bolette Hartmann, Tatyana D Fedorova, Karen Østergaard, Klaus Krogh, Niels Møller, Jens J Holst, Per Borghammer
BACKGROUND AND OBJECTIVES: Parkinson's disease (PD) patients experience several non-motor symptoms from the gastrointestinal tract that may partly be caused by parasympathetic deficiency. The pancreas is densely innervated by the vagus nerve, which mediates early meal-induced secretion of pancreatic polypeptide (PP). Early secretion after sham feeding has been validated as a marker of vagal integrity. Thus, the aim was to evaluate the ratio of increased PP plasma levels after sham feeding in PD and correlate findings with gastrointestinal transit time (GITT)...
September 11, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28893517/differential-effects-of-levodopa-and-apomorphine-on-neuronal-population-oscillations-in-the-cortico-basal-ganglia-loop-circuit-in-vivo-in-experimental-parkinsonism
#2
Johanna Kühn, Jens K Haumesser, Maximilian H Beck, Jennifer Altschüler, Andrea A Kühn, Vadim N Nikulin, Christoph van Riesen
The current pharmacotherapy of Parkinson's disease (PD) is primarily based on two classes of drugs: dopamine precursors, namely levodopa, and dopamine receptor agonists, such as apomorphine. Although both types of agents exert their beneficial clinical effects on motor and non-motor symptoms in PD via dopamine receptors, clinical efficiency and side effects differ substantially between levodopa and apomorphine. Levodopa can provide a greater symptomatic relief than dopamine receptor agonists. However, because long-term levodopa use is associated with early debilitating motor fluctuations, dopamine receptor agonists are often recommended in younger patients...
September 8, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28892570/dnajc12-and-dopa-responsive-non-progressive-parkinsonism
#3
Letizia Straniero, Ilaria Guella, Roberto Cilia, Laura Parkkinen, Valeria Rimoldi, Alexander Young, Rosanna Asselta, Giulia Soldà, Vesna Sossi, A Jon Stoessl, Alberto Priori, Kenya Nishioka, Nobutaka Hattori, Jordan Follett, Alex Rajput, Nenad Blau, Gianni Pezzoli, Matthew J Farrer, Stefano Goldwurm, Ali H Rajput, Stefano Duga
Biallelic DNAJC12 mutations were described in children with hyperphenylalaninemia, neurodevelopmental delay, and dystonia. We identified DNAJC12 homozygous null variants (c.187A>T;p.K63*and c.79-2A>G;p.V27Wfs*14) in two kindreds with early-onset parkinsonism. Both probands had mild intellectual disability, mild non-progressive, motor symptoms, sustained benefit from small dose of levodopa and substantial worsening of symptoms after levodopa discontinuation. Neuropathology (Proband-A) revealed no alpha-synuclein pathology and substantia nigra depigmentation with moderate cell loss DNAJC12 transcripts were reduced in both patients...
September 11, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28891262/more-than-constipation-bowel-symptoms-in-parkinson-s-disease-and-their-connection-to-gut-microbiota
#4
T H Mertsalmi, V T E Aho, P A B Pereira, L Paulin, E Pekkonen, P Auvinen, F Scheperjans
BACKGROUND AND PURPOSE: The majority of Parkinson's disease (PD) patients suffer from gastrointestinal symptoms of which constipation is considered the most prominent. Recently, in addition to constipation, a diagnosis of irritable bowel syndrome (IBS) was also found to be associated with increased PD risk. Gut microbiota alterations have been reported in IBS and recently also in PD. IBS-like bowel symptoms in PD and their possible connection to other non-motor symptoms and faecal microbiota were assessed...
September 11, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28884460/potassium-channels-a-potential-therapeutic-target-for-parkinson-s-disease
#5
REVIEW
Xiaoyan Chen, Bao Xue, Jun Wang, Haixia Liu, Limin Shi, Junxia Xie
The pathogenesis of the second major neurodegenerative disorder, Parkinson's disease (PD), is closely associated with the dysfunction of potassium (K(+)) channels. Therefore, PD is also considered to be an ion channel disease or neuronal channelopathy. Mounting evidence has shown that K(+) channels play crucial roles in the regulations of neurotransmitter release, neuronal excitability, and cell volume. Inhibition of K(+) channels enhances the spontaneous firing frequency of nigral dopamine (DA) neurons, induces a transition from tonic firing to burst discharge, and promotes the release of DA in the striatum...
September 7, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28883785/early-postnatal-but-not-late-adult-neurogenesis-is-impaired-in-the-pitx3-mutant-animal-model-of-parkinson-s-disease
#6
Moritz D Brandt, Diana Krüger-Gerlach, Andreas Hermann, Anne K Meyer, Kwang-Soo Kim, Alexander Storch
The generation of new neurons in the adult dentate gyrus has functional implications for hippocampal formation. Reduced hippocampal neurogenesis has been described in various animal models of hippocampal dysfunction such as dementia and depression, which are both common non-motor-symptoms of Parkinson's disease (PD). As dopamine plays an important role in regulating precursor cell proliferation, the loss of dopaminergic neurons in the substantia nigra (SN) in PD may be related to the reduced neurogenesis observed in the neurogenic regions of the adult brain: subventricular zone (SVZ) and dentate gyrus (DG)...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28882322/who-can-diagnose-parkinson-s-disease-first-role-of-pre-motor-symptoms
#7
REVIEW
Mayela Rodríguez-Violante, Rosalía Zerón-Martínez, Amin Cervantes-Arriaga, Teresa Corona
In 1817, James Parkinson described the disease which bears his name. The disease was defined as a neurological syndrome characterized by tremor, rigidity, and slowness of movements. Almost one hundred years later, degeneration of neurons in the substantia nigra and low levels of dopamine were identified as the putative cause of the disease, thus the disease remained as a pure neurological disorder. In the late 1990s, non-motor symptoms of the disease began to gain interest because of their clinical relevance, as well as for their potential role in broadening the understanding of the pathophysiological mechanisms involved...
September 4, 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/28879438/do-cognition-and-other-non-motor-symptoms-decline-similarly-among-patients-with-parkinson-s-disease-motor-subtypes-findings-from-a-5-year-prospective-study
#8
L Arie, Talia Herman, S Shema-Shiratzky, N Giladi, J M Hausdorff
Among patients with Parkinson's disease (PD), a wide range of motor and non-motor symptoms (NMS) are evident. PD is often divided into tremor dominant (TD) and postural instability gait difficulty (PIGD) motor subtypes. We evaluated the effect of disease duration and aimed to characterize whether there are differences in the deterioration of cognitive function and other NMS between the PIGD and TD subtypes. Sixty-three subjects were re-evaluated at the follow-up visit about 5 years after baseline examination...
September 6, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28879018/are-we-missing-non-motor-seizures-in-parkinson-s-disease-two-case-reports
#9
Andre Y Son, Alberto Cucca, Shashank Agarwal, Anli Liu, Alessandro Di Rocco, Milton C Biagioni
BACKGROUND: Parkinson's disease (PD) is predominantly recognized for its motor symptoms, but patients struggle from a morbid and heterogeneous collection of non-motor symptoms (NMS-PD) that can affect their quality of life even more. NMS-PD is a rather generalized term and the heterogeneity and non-specific nature of many symptoms poses a clinical challenge when a PD patient presents with non-motor complaints that may not be NMS-PD. CASE PRESENTATION: We report two patients with idiopathic PD who presented with acute episodes of cognitive changes...
2017: Journal of Clinical Movement Disorders
https://www.readbyqxmd.com/read/28874701/restless-legs-syndrome-in-parkinson-disease-clinical-characteristics-abnormal-iron-metabolism-and-altered-neurotransmitters
#10
Ying-Shan Piao, Teng-Hong Lian, Yang Hu, Li-Jun Zuo, Peng Guo, Shu-Yang Yu, Li Liu, Zhao Jin, Hui Zhao, Li-Xia Li, Qiu-Jin Yu, Rui-Dan Wang, Sheng-Di Chen, Piu Chan, Xiao-Min Wang, Wei Zhang
Relationships among clinical characteristics, iron metabolism and neurotransmitters in Parkinson disease (PD) patients with restless legs syndrome (RLS) remains unclear. We divided 218 patients into PD with and with no RLS (PD-RLS and PD-NRLS) groups by RLS-rating scale (RLS-RS) score. Motor and non-motor symptoms were rated by related scales. Iron and related proteins, and neurotransmitters in cerebrospinal fluid (CSF) and serum were measured. PD-RLS frequency was 40.37%. PD-RLS group had longer duration, higher stage and scores of motor symptoms, depression, anxiety, sleep disorders, fatigue and apathy, and increased transferrin and decreased iron, ferritin, dopamine (DA) and 5-hydroxytryptamine (5-HT) in CSF...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28873337/thalamic-gaba-levels-and-occupational-manganese-neurotoxicity-association-with-exposure-levels-and-brain-mri
#11
Ruoyun E Ma, Eric J Ward, Chien-Lin Yeh, Sandy Snyder, Zaiyang Long, Fulya Gokalp Yavuz, S Elizabeth Zauber, Ulrike Dydak
Excessive occupational exposure to Manganese (Mn) has been associated with clinical symptoms resembling idiopathic Parkinson's disease (IPD), impairing cognitive and motor functions. Several studies point towards an involvement of the brain neurotransmitter system in Mn intoxication, which is hypothesized to be disturbed prior to onset of symptoms. Edited Magnetic Resonance Spectroscopy (MRS) offers the unique possibility to measure γ-amminobutyric acid (GABA) and other neurometabolites in vivo non-invasively in workers exposed to Mn...
September 2, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28872736/progression-of-prodromal-motor-and-non-motor-symptoms-in-the-premotor-phase-study-2-year-follow-up-data
#12
I Liepelt-Scarfone, B Brändle, R Yilmaz, K Gauss, E Schaeffer, M Timmers, I Wurster, K Brockmann, W Maetzler, L Van Nueten, J R Streffer, D Berg
BACKGROUND AND PURPOSE: The neuropathological process starts years before the diagnosis of Parkinson's disease (PD). Assessment of prodromal features in healthy individuals may help to define those with high risk for future PD. Our aim was to evaluate the presence and progression of prodromal markers in individuals with low risk [healthy controls (HC), n = 14] and high risk for PD (HR-PD, n = 34) and early PD (n = 14) patients. METHODS: Several risk or prodromal markers were combined to define HR-PD...
September 5, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28871235/increase-of-reproductive-life-span-delays-age-of-onset-of-parkinson-s-disease
#13
Dominik Frentzel, Grigorij Judanin, Olga Borozdina, Jochen Klucken, Jürgen Winkler, Johannes C M Schlachetzki
One striking observation in Parkinson's disease (PD) is the remarkable gender difference in incidence and prevalence of the disease. Data on gender differences with regard to disease onset, motor and non-motor symptoms, and dopaminergic medication are limited. Furthermore, whether estrogen status affects disease onset and progression of PD is controversially discussed. In this retrospective single center study, we extracted clinical data of 226 ambulatory PD patients and compared age of disease onset, disease stage, motor impairment, non-motor symptoms, and dopaminergic medication between genders...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28870765/a-review-of-patient-specific-gastrointestinal-parameters-as-a-platform-for-developing-in-vitro-models-for-predicting-the-in-vivo-performance-of-oral-dosage-forms-in-patients-with-parkinson-s-disease
#14
REVIEW
Erik Wollmer, Sandra Klein
Parkinson's disease (PD) is a progressive neurodegenerative disease that presents with visible motor symptoms, but that is accompanied by several additional symptoms, including gastrointestinal symptoms that may affect pharmacokinetics of oral medications. A detailed understanding of the nature of PD-specific gastrointestinal parameters and of how they may affect drug release of orally administered dosage forms seems to be essential information for developing better oral PD medications. The availability of bio-predictive drug release models simulating PD-specific gastrointestinal parameters would also be beneficial for this purpose...
September 1, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28870627/endurance-exercise-improves-function-in-individuals-with-parkinson-s-disease-a-meta-analysis
#15
Alicia Flach, Lisa Jaegers, Mary Krieger, Emily Bixler, Patrick Kelly, Edward P Weiss, S Omar Ahmad
Current evidence has shown that exercise can reduce symptoms of Parkinson's disease (PD). However, previous studies indicated mixed results, possibly because of variability in terms of the nature of the exercise interventions. The purpose of this study was to perform a metaanalysis of current evidence from endurance exercise intervention studies for effects on the United Parkinson's Disease Rating Scale (UPDRS) in individuals with PD. A systematic literature search in six electronic databases was performed and two independent reviewers screened the title and abstract of 1106 records captured by the initial search...
September 1, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28866850/can-biomarkers-help-the-early-diagnosis-of-parkinson-s-disease
#16
REVIEW
Weidong Le, Jie Dong, Song Li, Amos D Korczyn
Parkinson's disease (PD) is a complex neurodegenerative disease with progressive loss of dopamine neurons. PD patients usually manifest a series of motor and non-motor symptoms. In order to provide better early diagnosis and subsequent disease-modifying therapies for PD patients, there is an urgent need to identify sensitive and specific biomarkers. Biomarkers can be divided into four categories: clinical, imaging, biochemical, and genetic. Ideal biomarkers not only improve our understanding of PD pathogenesis and progression, but also provide benefits for early risk evaluation and clinical diagnosis of PD...
September 2, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28861737/chronic-mptp-administration-regimen-in-monkeys-a-model-of-dopaminergic-and-non-dopaminergic-cell-loss-in-parkinson-s-disease
#17
REVIEW
Gunasingh J Masilamoni, Yoland Smith
Parkinson's disease (PD) is a progressive neurodegenerative disorder clinically characterized by cardinal motor deficits including bradykinesia, tremor, rigidity and postural instability. Over the past decades, it has become clear that PD symptoms extend far beyond motor signs to include cognitive, autonomic and psychiatric impairments, most likely resulting from cortical and subcortical lesions of non-dopaminergic systems. In addition to nigrostriatal dopaminergic degeneration, pathological examination of PD brains, indeed, reveals widespread distribution of intracytoplasmic inclusions (Lewy bodies) and death of non-dopaminergic neurons in the brainstem and thalamus...
August 31, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28854243/antiparkinsonian-effects-of-the-radiprodil-and-tozadenant-combination-in-mptp-treated-marmosets
#18
Anne Michel, Jean-Marie Nicolas, Sarah Rose, Michael Jackson, Peter Colman, Willy Briône, David Sciberras, Pierandrea Muglia, Dieter K Scheller, Martin Citron, Patrick Downey
OBJECTIVE: Investigate a combination of two clinically tested drugs, the NR2B antagonist Radiprodil and the A2A antagonist Tozadenant in the MPTP-treated marmoset model of Parkinson's Disease (PD). BACKGROUND: In PD, there remains a need for the development of non-dopaminergic drugs to effectively treat the motor symptoms without the induction of L-Dopa-induced motor complications. METHODS: Clinically relevant doses of Radiprodil and Tozadenant were given both alone and in combination without the addition of L-Dopa, and the antiparkinsonian efficacy of the treatments was assessed in a primate model of PD...
2017: PloS One
https://www.readbyqxmd.com/read/28851733/brown-adipose-tissue-activation-in-a-rat-model-of-parkinson-s-disease
#19
Wenjuan Wang, Xiangzhi Meng, Chun Yang, Dongliang Fang, Xuemeng Wang, Jiaqiang An, Jingyi Zhang, Lulu Wang, Tao Lu, Hai-Bin Ruan, Yan Gao
Loss of body weight and fat mass is one of the non-motor symptoms of Parkinson's disease (PD). Weight loss is primarily due to reduced energy intake and increased energy expenditure. While inadequate energy intake in PD patients is mainly caused by appetite loss and impaired gastrointestinal absorption, the underlying mechanisms for increased energy expenditure remain largely unknown. Brown adipose tissue (BAT), a key thermogenic tissue in humans and other mammals, plays an important role in thermoregulation and energy metabolism; however, it has not been tested if BAT is involved in the negative energy balance in PD...
August 29, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28844367/apathy-in-drug-na%C3%A3-ve-patients-with-parkinson-s-disease
#20
Hui Liu, Ruwei Ou, Qianqian Wei, Yanbing Hou, Lingyu Zhang, Bei Cao, Bi Zhao, Wei Song, Huifang Shang
OBJECTIVE: The aim of this study is to explore the prevalence and clinical correlates of apathy in early-stage Parkinson's disease (PD) from a cohort of Chinese patients. METHODS: A cross-sectional analysis of 133 treatment-naive PD patients was conducted. Each subject was categorized as PD with or without apathy using the Lille Apathy Rating Scale (LARS). RESULTS: Of 133 patients, 30 PD patients (22.56%) reported apathy, of whom 23 (17.29%) did not have concomitant depression...
August 10, 2017: Parkinsonism & related Disorders
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