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https://www.readbyqxmd.com/read/28944983/oral-prolonged-release-oxycodone-naloxone-for-managing-pain-and-opioid-induced-constipation-a-review-of-the-evidence
#1
REVIEW
Bart J Morlion, Stefan A Mueller-Lissner, Renato Vellucci, Wojciech Leppert, Benoît C Coffin, Sara L Dickerson, Tony O'Brien
BACKGROUND: Opioids provide effective relief from moderate-to-severe pain and should be prescribed as part of a multifaceted approach to pain management when other treatments have failed. Fixed-dose oxycodone/naloxone prolonged-release tablets (OXN PR) were designed to address the opioid class effect of opioid-induced constipation (OIC) by combining the analgesic efficacy of oxycodone with the opioid receptor antagonist, naloxone, which has negligible systemic availability when administered orally...
September 25, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28944802/subcellular-compartmentalisation-of-copper-iron-manganese-and-zinc-in-the-parkinson-s-disease-brain
#2
Sian Genoud, Blaine R Roberts, Adam P Gunn, Glenda M Halliday, Simon J G Lewis, Helen J Ball, Dominic J Hare, Kay L Double
Elevated iron and decreased copper levels are cardinal features of the degenerating substantia nigra pars compacta in the Parkinson's disease brain. Both of these redox-active metals, and fellow transition metals manganese and zinc, are found at high concentrations within the midbrain and participate in a range of unique biological reactions. We examined the total metal content and cellular compartmentalisation of manganese, iron, copper and zinc in the degenerating substantia nigra, disease-affected but non-degenerating fusiform gyrus, and unaffected occipital cortex in the post mortem Parkinson's disease brain compared with age-matched controls...
September 25, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28944563/a-randomized-controlled-trial-of-levodopa-in-patients-with-angelman-syndrome
#3
Wen-Hann Tan, Lynne M Bird, Anjali Sadhwani, Rene L Barbieri-Welge, Steven A Skinner, Lucia T Horowitz, Carlos A Bacino, Lisa M Noll, Cary Fu, Rachel J Hundley, Logan K Wink, Craig A Erickson, Gregory N Barnes, Anne Slavotinek, Rita Jeremy, Alexander Rotenberg, Sanjeev V Kothare, Heather E Olson, Annapurna Poduri, Mark P Nespeca, Hillary C Chu, Jennifer M Willen, Kevin F Haas, Edwin J Weeber, Paul A Rufo
Treatment for Angelman syndrome (AS) is currently limited to symptomatic interventions. A mouse model of AS has reduced calcium/calmodulin-dependent kinase II activity due to excessive phosphorylation of specific threonine residues, leading to diminished long-term potentiation. In a rat model of Parkinson disease, levodopa reduced phosphorylation of various proteins, including calcium/calmodulin-dependent kinase II. Further studies demonstrated that AS mice treated with levodopa performed better on rotarod testing than untreated AS mice...
September 25, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28944257/affective-correlates-of-psychosis-in-parkinson-s-disease
#4
Stewart A Factor, Michael K Scullin, Alan Freeman, Donald L Bliwise, William M McDonald, Felicia C Goldstein
OBJECTIVE: To examine the nature of the association between affective disorders and psychosis in Parkinson's disease (PD). BACKGROUND: In PD, psychosis and affective disorders are common and independently impact quality of life and mortality. Both depression and psychosis are correlated with the occurrence of cognitive dysfunction, suggesting that they may share neurobiological substrates. Anxiety has not been examined as a correlate of psychosis. METHODS: 144 PD subjects were evaluated with the Schedule for Assessment of Positive Symptoms to assess psychotic features, while depression and anxiety were examined by the Structured Clinical Interview for DSM-IV-TR (SCID) and self-assessment scales Beck Depression Inventory II (BDI-II) and Beck Anxiety Inventory (BAI)...
March 2017: Movement Disorders Clinical Practice
https://www.readbyqxmd.com/read/28944256/depressive-symptoms-are-frequent-in-atypical-parkinsonian-disorders
#5
Leonardo Almeida, Bilal Ahmed, Roger Walz, Sol De Jesus, Addie Patterson, Daniel Martinez-Ramirez, David Vaillancourt, Dawn Bowers, Herbert Ward, Michael S Okun, Nikolaus R McFarland
OBJECTIVE: To compare the incidence and prevalence of depressive symptoms in atypical parkinsonian (APD) syndromes versus Parkinson disease (PD). METHODS: In a large retrospective patient cohort we analyzed the incidence and prevalence of depressive symptoms using the Beck Depression Inventory (BDI) and evaluated subjects longitudinally on subsequent visits. For individuals who followed in subsequent visits we calculated incidence rates in person-years as a measure of incidence...
March 2017: Movement Disorders Clinical Practice
https://www.readbyqxmd.com/read/28943960/stk39-overexpressed-in-osteosarcoma-regulates-osteosarcoma-cell-invasion-and-proliferation
#6
Tao Huang, Yuan Zhou, Yun Cao, Jie Tao, Zhi-Hui Zhou, Dong-Hua Hang
Serine/threonine kinase 39 (STK39) is associated with hypertension, autism, Parkinson's disease and various types of cancer in recent years. This study investigated STK39 expression and possible roles in osteosarcoma using qPCR and western blot analysis. Compared to normal bone tissues, the mRNA and protein expression of STK39 was found to be upregulated in osteosarcoma. Using small interfering RNA transfection, STK39 was knocked down into two cell lines of osteosarcoma, U2OS and MG63, and the effects exerted on cell functioning were examined...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943632/differences-in-abca1-r219k-polymorphisms-and-serum-indexes-in-alzheimer-and-parkinson-diseases-in-northern-china
#7
Lagai Ya, Zuneng Lu
BACKGROUND ABCA1 R219K single-nucleotide polymorphisms (SNPs) was related to Alzheimer disease (AD) but not Parkinson disease (PD). Here, we analyzed the associations among ABCA1 R219K distribution, serum biomarkers, AD, and PD in a population in northern China. MATERIAL AND METHODS We used the Mini-Mental State Examination (MMSE) and the Hoehn and Yahr scale (H-Y) to evaluate AD and PD progression, separately. ABCA1 R219K was analyzed by matrix-assisted laser desorption ionization time of flight time mass spectrometry (MALDI-TOF-MS)...
September 25, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28943542/a-card-type-odor-identification-test-for-japanese-patients-with-parkinson-s-disease-and-related-disorders
#8
Yuji Watanabe, Keisuke Suzuki, Tomoyuki Miyamoto, Masayuki Miyamoto, Ayaka Numao, Hiroaki Fujita, Tomoyuki Uchiyama, Taro Kadowaki, Takeo Matsubara, Koichi Hirata
Objective The characteristics of olfactory impairment in Parkinson's disease (PD), multiple system atrophy (MSA) and progressive supranuclear palsy (PSP) have not been determined in detail. We assessed the olfactory function among PD, MSA and PSP patients. Methods A card-type odor identification test, Open Essence (OE, Wako, Japan), which consists of 12 different odorants familiar to Japanese subjects, was administered to 98 PD patients, 32 MSA patients, 17 PSP patients and 96 control subjects ≥50 years of age...
September 25, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28943414/in-vivo-mri-assessment-of-the-human-locus-coeruleus-along-its-rostrocaudal-extent-in-young-and-older-adults
#9
Matthew J Betts, Arturo Cardenas-Blanco, Martin Kanowski, Frank Jessen, Emrah Düzel
The locus coeruleus (LC), a major origin of noradrenergic projections in the central nervous system (CNS), may serve a critical role in the pathogenesis of neurodegenerative disorders such as Alzheimer's disease (AD) and Parkinson's disease (PD). As such, there is considerable interest to develop magnetic resonance imaging (MRI) techniques to assess the integrity of the LC in vivo. The high neuromelanin content of the LC serves as an endogenous contrast for MRI but existing protocols suffer from low spatial resolution along the rostrocaudal axis of the LC rendering it difficult to differentiate its integrity in caudal and rostral portions...
September 21, 2017: NeuroImage
https://www.readbyqxmd.com/read/28943253/iap-based-cell-sorting-results-in-homogeneous-transplantable-dopaminergic-precursor-cells-derived-from-human-pluripotent-stem-cells
#10
Daniela Lehnen, Serena Barral, Tiago Cardoso, Shane Grealish, Andreas Heuer, Andrej Smiyakin, Agnete Kirkeby, Jutta Kollet, Harold Cremer, Malin Parmar, Andreas Bosio, Sebastian Knöbel
Human pluripotent stem cell (hPSC)-derived mesencephalic dopaminergic (mesDA) neurons can relieve motor deficits in animal models of Parkinson's disease (PD). Clinical translation of differentiation protocols requires standardization of production procedures, and surface-marker-based cell sorting is considered instrumental for reproducible generation of defined cell products. Here, we demonstrate that integrin-associated protein (IAP) is a cell surface marker suitable for enrichment of hPSC-derived mesDA progenitor cells...
September 19, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28943252/vitamin-c-induced-epigenetic-modifications-in-donor-nscs-establish-midbrain-marker-expressions-critical-for-cell-based-therapy-in-parkinson-s-disease
#11
Noviana Wulansari, Eun-Hee Kim, Yanuar Alan Sulistio, Yong-Hee Rhee, Jae-Jin Song, Sang-Hun Lee
Cultured neural stem/precursor cells (NSCs) are regarded as a potential systematic cell source to treat Parkinson's disease (PD). However, the therapeutic potential of these cultured NSCs is lost during culturing. Here, we show that treatment of vitamin C (VC) enhances generation of authentic midbrain-type dopamine (mDA) neurons with improved survival and functions from ventral midbrain (VM)-derived NSCs. VC acted by upregulating a series of mDA neuron-specific developmental and phenotype genes via removal of DNA methylation and repressive histone code (H3K9m3, H3K27m3) at associated gene promoter regions...
September 18, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28942794/the-genetics-of-parkinson%C3%A2-disease
#12
Lina Mastrangelo
The 200years of research efforts on Parkinson disease (PD) form the basis of our understanding of the second most common neurodegenerative disorder after Alzheimer disease. This journey has been marked by the revolutionary discovery of a neurotransmitter replacement therapy that provides a longer and healthier life to patients. Since 1997, the advances in the genetics of PD have expanded our understanding of this neurodegenerative disorder and they are opening up new ways to search for disease-modifying therapies...
2017: Advances in Genetics
https://www.readbyqxmd.com/read/28942477/cognitive-performance-in-mid-stage-parkinson-s-disease-functional-connectivity-under-chronic-antiparkinson-treatment
#13
Roxana Vancea, Kristina Simonyan, Maria Petracca, Miroslaw Brys, Alessandro Di Rocco, Maria Felice Ghilardi, Matilde Inglese
Cognitive impairment in Parkinson's disease (PD) is related to the reorganization of brain topology. Although drug challenge studies have proven how levodopa treatment can modulate functional connectivity in brain circuits, the role of chronic dopaminergic therapy on cognitive status and functional connectivity has never been investigated. We sought to characterize brain functional topology in mid-stage PD patients under chronic antiparkinson treatment and explore the presence of correlation between reorganization of brain architecture and specific cognitive deficits...
September 23, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28942154/pallidal-low-%C3%AE-low-%C3%AE-phase-amplitude-coupling-inversely-correlates-with-parkinson-disease-symptoms
#14
Christos Tsiokos, Mahsa Malekmohammadi, Nicholas AuYong, Nader Pouratian
OBJECTIVE: Recent discoveries suggest that it is most likely the coupling of β oscillations (13-30Hz) and not merely their power that relates to Parkinson disease (PD) pathophysiology. METHODS: We analyzed power and phase amplitude coupling (PAC) in local field potentials (LFP) recorded from Pallidum after placement of deep brain stimulation (DBS) leads in nineteen PD patients and three patients with dystonia. RESULTS: Within GPi, we identified PAC between phase of β and amplitude of high frequency oscillations (200-300Hz) and distinct β-low γ (40-80Hz) PAC both modulated by contralateral movement...
September 5, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28942114/differentiation-of-mesenchymal-stem-cells-derived-trabecular-meshwork-into-dopaminergic-neuron-like-cells-on-nanofibrous-scaffolds
#15
Simin Jamali, Hossein Mostafavi, Ghasem Barati, Mehdi Eskandari, Samad Nadri
Parkinson's disease (PD) is a neurodegenerative disorder of the brain which is produced by the damage to dopaminergic neurons. Stem cell transplantation with a nanofibrous scaffold is one of the encouraging strategies for Parkinson's disease therapy. In this study, human mesenchymal stem cells (MSCs) from eye trabecular meshwork (TM) were differentiated into dopaminergic neurons on nanofibrous scaffold. After Trabecular meshwork biopsy, MSCs were isolated, cultivated on Poly-l-Lactide Acid (PLLA) nanofibrous scaffold (fabricated by electrospinning methods) and treated with medium containing DMEM supplemented with RA, IBMX and forskolin for 7 days...
September 20, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28941828/fatigue-correlates-with-lrrk2-g2385r-variant-in-chinese-parkinson-s-disease-patients
#16
Rao Fu, Shi-Shuang Cui, Juan-Juan Du, Ya-Chao He, Chao Gao, Pei Huang, Yi-Wei Qian, Xiao-Guang Luo, Sheng-Di Chen
INTRODUCTION: Fatigue is common in patients with Parkinson's disease (PD). The leucine-rich repeat kinase 2 (LRRK2) G2385R variant predisposes individuals to develop PD in China. The aim of this study was to evaluate whether the LRRK2 G2385R variant is associated with fatigue in patients with PD. METHODS: Fatigue was evaluated by the Parkinson Fatigue Scale (PFS) in 329 PD patients and 180 controls, a cut-off score of ≥3.3 was used to define the presence of fatigue...
September 18, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28941726/a-role-of-bag3-in-regulating-snca-%C3%AE-synuclein-clearance-via-selective-macroautophagy
#17
Yu-Lan Cao, Ya-Ping Yang, Cheng-Jie Mao, Xiao-Qi Zhang, Chen-Tao Wang, Jing Yang, Dong-Jun Lv, Fen Wang, Li-Fang Hu, Chun-Feng Liu
Many studies reveal that BAG3 plays a critical role in the regulation of protein degradation via macroautophagy. However, it remains unknown whether BAG3 affects the quality control of α-synuclein (SNCA), a Parkinson's disease-related protein. In this study, we demonstrated the increases of BAG3 expression in the ventral midbrain of SNCA(A53T) transgenic mice and also in MG132-treated PC12 cells overexpressing wild-type SNCA (SNCA(WT)-PC12). Moreover, we showed that BAG3 overexpression was sufficient to enhance the autophagy activity while knockdown of Bag3 reduced it in SNCA(WT)-PC12 cells...
September 1, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28941592/dysregulation-of-serum-nadph-oxidase1-and-ferritin-levels-provides-insights-into-diagnosis-of-parkinson-s-disease
#18
Mohsen Hemmati-Dinarvand, Ali-Akbar Taher-Aghdam, Ali Mota, Sepideh Zununi Vahed, Nasser Samadi
OBJECTIVE: Parkinson's disease (PD) is a common neurodegenerative disease. Oxidative stress is considered as a key modulator in the development of PD. This study aimed to investigate associations between serum NOX1 (NADPH oxidase1), ferritin, selenium (Se) and uric acid (UA) levels and clinical parameters in patients with PD. DESIGN AND METHODS: Serum levels of NOX1, ferritin, Se and UA were measured in 40 PD patients and 40 healthy individuals. Receiver operating characteristic (ROC) analysis was performed to investigate incremental diagnostic value of each factor in the study groups...
September 20, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28941549/the-corticostriatal-adenosine-a2a-receptor-controls-maintenance-and-retrieval-of-spatial%C3%A2-working-memory
#19
Zhihui Li, Xingjun Chen, Tao Wang, Ying Gao, Fei Li, Long Chen, Jin Xue, Yan He, Yan Li, Wei Guo, Wu Zheng, Liping Zhang, Fenfen Ye, Xiangpeng Ren, Yue Feng, Piu Chan, Jiang-Fan Chen
BACKGROUND: Working memory (WM) taps into multiple executive processes including encoding, maintenance, and retrieval of information, but the molecular and circuit modulation of these WM processes remains undefined due to the lack of methods to control G protein-coupled receptor signaling with temporal resolution of seconds. METHODS: By coupling optogenetic control of the adenosine A2A receptor (A2AR) signaling, the Cre-loxP-mediated focal A2AR knockdown with a delayed non-match-to-place (DNMTP) task, we investigated the effect of optogenetic activation and focal knockdown of A2ARs in the dorsomedial striatum (n = 8 to 14 per group) and medial prefrontal cortex (n = 16 to 22 per group) on distinct executive processes of spatial WM...
August 1, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28941002/an-assessment-of-movement-disorder-society-task-force-diagnostic-criteria-for-mild-cognitive-impairment-in-parkinson-s-disease
#20
Pınar Uysal-Cantürk, Haşmet A Hanağasi, Başar Bilgiç, Hakan Gürvit, Murat Emre
BACKGROUND: Cognitive impairment is one of the most disabling non-motor symptoms of Parkinson disease (PD). Mild cognitive impairment (MCI) constitutes a major risk for the development of Parkinson's disease Dementia in the course of the disease. A Movement Disorder Society (MDS) Task Force proposed diagnostic criteria for mild cognitive impairment in Parkinson's disease (PD-MCI), comprising two operational levels: Level I and Level II. METHOD: The objective of our study was to test the accuracy of Level I versus Level II diagnostic criteria...
September 20, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
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