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https://www.readbyqxmd.com/read/29164519/atorvastatin-prevents-early-oxidative-events-and-modulates-inflammatory-mediators-in-the-striatum-following-intranasal-1-methyl-4-phenyl-1-2-3-6-tetrahydropyridine-mptp-administration-in-rats
#1
Naiani F Marques, Adalberto A Castro, Gianni Mancini, Fernanda L Rocha, Adair R S Santos, Rui D Prediger, Andreza Fabro De Bem, Carla I Tasca
Atorvastatin is a 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor with cholesterol-lowering, anti-inflammatory, and antioxidant properties. Increasing evidence show atorvastatin acts as a protective agent against insults in the central nervous system (CNS). The regular use of statins has been associated with a reduced risk of Parkinson's disease (PD) development. Here, we evaluated early events involved in the neurotoxicity induced by intranasal (i.n.) infusion of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in rats and the potential of atorvastatin to prevent these early toxic events...
November 21, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/29127919/a-case-report-of-a-de-garengeot-hernia-in-a-nonagenarian-veteran
#2
Luis R Taveras, Sergio Huerta
INTRODUCTION: A hernia containing the vermiform appendix [de Garengeot hernia (DGH)] is an exceedingly rare event. Appendicitis occurring in this setting if further unusual. Most cases of DGH are made during inguinal exploration. In the present report, we discuss a patient who underwent an operation which revealed a DGH with appendicitis. PRESENTATION OF A CASE: A 94-year-old man with a past medical history significant for hypertension and Parkinson's disease was admitted to the hospital for the management of an event of CHF exacerbation...
November 3, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29115479/overexpression-of-mir%C3%A2-185-inhibits-autophagy-and-apoptosis-of-dopaminergic-neurons-by-regulating-the-ampk-mtor-signaling-pathway-in-parkinson-s-disease
#3
Zhi Wen, Jie Zhang, Peng Tang, Ning Tu, Ke Wang, Guangyao Wu
Parkinson's disease (PD) is an age‑associated neurodegenerative disorder characterized by the death of dopaminergic neurons in the substantia nigra pars compacta. Activation of 5'‑adenosine monophosphate‑activated protein kinase (AMPK) has been suggested to be associated with PD pathogenesis. The aim of the present study was to investigate the effects of the aberrant expression of microRNA‑185 (miR‑185) in PD. A 1‑methyl‑4‑phenyl‑1,2,3,6‑tetrahydropyridine (MPTP)‑induced in vitro model of PD was generated using the human SH‑SY5Y dopaminergic neuroblastoma cell line, in order to examine the potential molecular mechanisms underlying the roles of miR‑185 in PD...
October 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29111028/csf-biomarkers-%C3%AE-amyloid-tau-proteins-and-a-synuclein-in-the-differential-diagnosis-of-parkinson-plus-syndromes
#4
Vasilios C Constantinides, George P Paraskevas, Evangelia Emmanouilidou, Olga Petropoulou, Anastasia Bougea, Kostas Vekrellis, Ioannis Evdokimidis, Eleftherios Stamboulis, Elisabeth Kapaki
INTRODUCTION: Differential diagnosis of Parkinson-plus patients (PSP, CBD, MSA) and Parkinson's disease (PD) patients is often not straightforward, particularly in atypical cases or at the initial stages of the diseases. Classic CSF biomarkers (amyloid-beta - Aβ42, tau protein - τT and phosphorylated tau protein - τP-181) are established biomarkers in the diagnosis of Alzheimer's disease (AD). CSF a-synuclein (α-syn) has emerged as a promising biomarker in patients with Parkinsonism...
November 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29109160/activity-of-meropenem-vaborbactam-in-mouse-models-of-infection-due-to-kpc-producing-carbapenem-resistant-enterobacteriaceae-cre
#5
Mojgan Sabet, Ziad Tarazi, Thomas Nolan, Jonathan Parkinson, Debora Rubio-Aparicio, Olga Lomovskaya, Michael N Dudley, David C Griffith
Meropenem-vaborbactam (Vabomere™) is highly active against Gram-negative pathogens, especially KPC-producing, carbapenem-resistant Enterobacteriaceae The objective of these studies was to evaluate the efficacy of meropenem alone and in combination with vaborbactam in mouse thigh and lung infection models. Thighs or lungs of neutropenic mice were infected with KPC-producing carbapenem-resistant Enterobacteriaceae with meropenem MICs ranging from ≤ 0.06 - 8 mg/L in the presence of vaborbactam 8 mg/L. Mice were treated with meropenem alone or meropenem in combination with vaborbactam every 2 hours for 24 hours to provide exposures comparable to 2 g doses of each component in humans...
November 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29108985/serotonergic-neurons-mediate-the-anxiolytic-effect-of-l-dopa-neuronal-correlates-in-the-amygdala
#6
Emilie Faggiani, Frederic Naudet, Marcus L F Janssen, Yasin Temel, Abdelhamid Benazzouz
Anxiety in Parkinson's disease is a comorbid non-motor symptom that alters the quality of life of patients. Its neuronal substrates and those of l-Dopa treatment are still poorly known. Using different combinations of monoaminergic system lesions in the rat, we addressed the contribution of these systems in the efficacy of l-DOPA on anxiety and on the neuronal activity of basolateral amygdala (BLA), a brain structure involved in anxiety. Anxiety, locomotor activity and motor performance were assessed using the elevated plus maze, the open field and the skinner box, respectively...
November 3, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/29103048/treadmill-training-with-cues-and-feedback-improves-gait-in-people-with-more-advanced-parkinson-s-disease
#7
Valeria Studer, Roberto Maestri, Ilaria Clerici, Letizia Spina, Ilaria Zivi, Davide Ferrazzoli, Giuseppe Frazzitta
BACKGROUND: Gait disturbances in Parkinson's disease (PD) are highly disabling and poorly responsive to drugs, especially in advanced stages. While the efficacy of a treadmill training based on external feedback and cues (treadmill-plus) on gait disturbances in early PD stages is demonstrated, no definitive evidence exists about advanced stages. OBJECTIVE: We aimed to evaluate the feasibility and the effects of a treadmill-plus training on gait disturbances in advanced PD...
2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/29080800/a-multi-biomarker-analysis-of-the-antioxidant-efficacy-of-parkinson-s-disease-therapy
#8
Monica Colamartino, Guglielmo Duranti, Roberta Ceci, Stefania Sabatini, Antonella Testa, Renata Cozzi
Substantial evidences suggest that reactive oxygen species participate in the normal aging process and in cancer and neurodegenerative age-related diseases. Parkinson's disease (PD), one of the most common oxidative stress-associated pathology in aging people, is treated with a standard pharmacological protocol consisting in a combined therapy l-dopa plus an inhibitor of dopa-decarboxylase, such as carbidopa. The therapy is well validated for the ability to restoring dopaminergic neurotransmission in PD patients, while l-dopa and carbidopa ability in modulating oxidative stress is currently under discussion...
October 26, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29050386/brain-monoamine-oxidase-b-and-a-in-human-parkinsonian-dopamine-deficiency-disorders
#9
Junchao Tong, Gausiha Rathitharan, Jeffrey H Meyer, Yoshiaki Furukawa, Lee-Cyn Ang, Isabelle Boileau, Mark Guttman, Oleh Hornykiewicz, Stephen J Kish
See Jellinger (doi:10.1093/awx190) for a scientific commentary on this article. The enzyme monoamine oxidases (B and A subtypes, encoded by MAOB and MAOA, respectively) are drug targets in the treatment of Parkinson's disease. Inhibitors of MAOB are used clinically in Parkinson's disease for symptomatic purposes whereas the potential disease-modifying effect of monoamine oxidase inhibitors is debated. As astroglial cells express high levels of MAOB, the enzyme has been proposed as a brain imaging marker of astrogliosis, a cellular process possibly involved in Parkinson's disease pathogenesis as elevation of MAOB in astrocytes might be harmful...
September 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29042162/pronation-and-supination-analysis-based-on-biomechanical-signals-from-parkinson-s-disease-patients
#10
Alejandro Garza-Rodríguez, Luis Pastor Sánchez-Fernández, Luis Alejandro Sánchez-Pérez, Christopher Ornelas-Vences, Mariane Ehrenberg-Inzunza
In this work, a fuzzy inference model to evaluate hands pronation/supination exercises during the MDS-UPDRS motor examination is proposed to analyze different extracted features from the bio-mechanical signals acquired from patients with Parkinson's disease (PD) in different stages of severity. Expert examiners perform visual assessments to evaluate several aspects of the disease. Some previous work on this subject does not contemplate the MDS-UPDRS guidelines. The method proposed in this work quantifies the biomechanical features examiners evaluate...
October 14, 2017: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/28991666/educational-attainment-and-motor-burden-in-advanced-parkinson-s-disease-the-emerging-role-of-education-in-motor-reserve
#11
Josefine Blume, Eva Rothenfusser, Jürgen Schlaier, Ulrich Bogdahn, Max Lange
OBJECTIVE: To explore the relationship of motor burden and educational attainment in patients with advanced stage PD. MATERIALS AND METHODS: We included 102 consecutive patients who underwent a complete evaluation for DBS surgery, including detailed neuropsychological testing and UPDRSIII in a standardized Levodopa challenge. Years of education (YoE) were calculated as the highest grade attained in secondary school plus years for post-secondary training. RESULTS: The OFF medication UPDRS-III score was associated with YoE (p=0...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28975044/recent-updates-on-acquired-hepatocerebral-degeneration
#12
REVIEW
Hae-Won Shin, Hee Kyung Park
BACKGROUND: Acquired hepatocerebral degeneration (AHD) refers to a chronic neurological syndrome in patients with advanced hepatobiliary diseases. This comprehensive review focuses on the pathomechanism and neuroimaging findings in AHD. METHODS: A PubMed search was performed using the terms "acquired hepatocerebral degeneration," "chronic hepatocerebral degeneration," "Non-Wilsonian hepatocerebral degeneration," "cirrhosis-related parkinsonism," and "manganese and liver disease...
2017: Tremor and Other Hyperkinetic Movements
https://www.readbyqxmd.com/read/28973176/association-between-poor-cognitive-functioning-and-risk-of-incident-parkinsonism-the-rotterdam-study
#13
Sirwan K L Darweesh, Frank J Wolters, Ronald B Postuma, Bruno H Stricker, Albert Hofman, Peter J Koudstaal, M Kamran Ikram, M Arfan Ikram
Importance: Cognitive dysfunction is a common feature among patients with parkinsonism, including Parkinson disease (PD). However, there is a scarcity of data on cognitive functioning before parkinsonism diagnosis, a stage at which patients may still respond to putative disease-modifying interventions. Objective: To assess whether poor cognitive functioning is associated with an increased risk of parkinsonism. Design, Setting, and Participants: Between January 8, 2002, and December 14, 2008, baseline cognitive function was assessed in 7386 participants of the Rotterdam Study who were free of parkinsonism and dementia...
September 25, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28910314/the-variability-of-the-steps-preceding-obstacle-avoidance-approach-phase-is-dependent-on-the-height-of-the-obstacle-in-people-with-parkinson-s-disease
#14
Lucas Simieli, Lilian Teresa Bucken Gobbi, Diego Orcioli-Silva, Victor Spiandor Beretta, Paulo Cezar Rocha Santos, André Macari Baptista, Fabio Augusto Barbieri
Gait variability may serve as a sensitive and clinically relevant parameter to quantify adjustments in walking and the changes with aging and neurological disease. Variability of steps preceding obstacle avoidance (approach phase) are important for efficiency in the task, especially in people with Parkinson's disease (PD). However, variability of gait during the approach phase to obstacle avoidance in people with PD has been rarely reported, particularly when ambulating obstacles of different heights. The aim of the present study was to investigate the effects of obstacle height on step-to-step variability (step-to-step variability provides information on the variation between the "equivalent steps" for all trials, and walking variability (indicates the within-step variability of each, providing information about the modulations between the steps performed...
2017: PloS One
https://www.readbyqxmd.com/read/28880414/levodopa-treatment-and-dendritic-spine-pathology
#15
REVIEW
Haruo Nishijima, Tatsuya Ueno, Yukihisa Funamizu, Shinya Ueno, Masahiko Tomiyama
Parkinson's disease (PD) is a neurodegenerative disorder associated with the progressive loss of nigrostriatal dopaminergic neurons. Levodopa is the most effective treatment for the motor symptoms of PD. However, chronic oral levodopa treatment can lead to various motor and nonmotor complications because of nonphysiological pulsatile dopaminergic stimulation in the brain. Examinations of autopsy cases with PD have revealed a decreased number of dendritic spines of striatal neurons. Animal models of PD have revealed altered density and morphology of dendritic spines of neurons in various brain regions after dopaminergic denervation or dopaminergic denervation plus levodopa treatment, indicating altered synaptic transmission...
September 7, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28877690/gypenosides-ameliorate-memory-deficits-in-mptp-lesioned-mouse-model-of-parkinson-s-disease-treated-with-l-dopa
#16
Ting Ting Zhao, Kyung Sook Kim, Keon Sung Shin, Hyun Jin Park, Hyun Jeong Kim, Kyung Eun Lee, Myung Koo Lee
BACKGROUND: Previous studies have revealed that gypenosides (GPS) improve the symptoms of anxiety disorders in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-lesioned rat model of Parkinson's disease (PD). The present study aimed to investigate the effects of GPS on memory deficits in an MPTP-lesioned mouse model of PD treated with L-3,4-dihydroxyphenylalanine (L-DOPA). METHODS: MPTP (30 mg/kg/day, 5 days)-lesioned mice were treated with GPS (50 mg/kg) and/or L-DOPA (10 and 25 mg/kg) for 21 days...
September 6, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28876371/group-climate-in-the-voice-therapy-of-patients-with-parkinson-s-disease
#17
Giovana Diaféria, Glaucya Madazio, Claudia Pacheco, Patricia Barbarini Takaki, Mara Behlau
Purpose: To verify the impact that group dynamics and coaching strategies have on the PD patients voice, speech and communication, as well as the group climate. Methods: 16 individuals with mild to moderate dysarthria due to the PD were divided into two groups: the CG (8 patients), submitted to traditional therapy with 12 regular therapy sessions plus 4 additional support sessions; and the EG (8 patients), submitted to traditional therapy with 12 regular therapy sessions plus 4 sessions with group dynamics and coaching strategies...
September 4, 2017: CoDAS
https://www.readbyqxmd.com/read/28843453/receptor-heteromer-mediated-regulation-of-endocannabinoid-signaling-in-activated-microglia-role-of-cb1-and-cb2-receptors-and-relevance-for-alzheimer-s-disease-and-levodopa-induced-dyskinesia
#18
Gemma Navarro, Dasiel Borroto-Escuela, Edgar Angelats, Íñigo Etayo, Irene Reyes-Resina, Marta Pulido-Salgado, Ana I Rodríguez-Pérez, Enric I Canela, Josep Saura, José Luis Lanciego, José Luis Labandeira-García, Carlos A Saura, Kjell Fuxe, Rafael Franco
Endocannabinoids are important regulators of neurotransmission and, acting on activated microglia, they are postulated as neuroprotective agents. Endocannabinoid action is mediated by CB1 and CB2 receptors, which may form heteromeric complexes (CB1-CB2Hets) with unknown function in microglia. We aimed at establishing the expression and signaling properties of cannabinoid receptors in resting and LPS/IFN-γ-activated microglia. In activated microglia mRNA transcripts increased (2 fold for CB1 and circa 20 fold for CB2), whereas receptor levels were similar for CB1 and markedly upregulated for CB2; CB1-CB2Hets were also upregulated...
January 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28841694/differential-diagnosis-between-parkinson-s-disease-and-essential-tremor-using-the-smartphone-s-accelerometer
#19
Sergi Barrantes, Antonio J Sánchez Egea, Hernán A González Rojas, Maria J Martí, Yaroslau Compta, Francesc Valldeoriola, Ester Simo Mezquita, Eduard Tolosa, Josep Valls-Solè
BACKGROUND: The differential diagnosis between patients with essential tremor (ET) and those with Parkinson's disease (PD) whose main manifestation is tremor may be difficult unless using complex neuroimaging techniques such as 123I-FP-CIT SPECT. We considered that using smartphone's accelerometer to stablish a diagnostic test based on time-frequency differences between PD an ET could support the clinical diagnosis. METHODS: The study was carried out in 17 patients with PD, 16 patients with ET, 12 healthy volunteers and 7 patients with tremor of undecided diagnosis (TUD), who were re-evaluated one year after the first visit to reach the definite diagnosis...
2017: PloS One
https://www.readbyqxmd.com/read/28840137/uptake-index-of-123-i-metaiodobenzylguanidine-myocardial-scintigraphy-for-diagnosing-lewy-body-disease
#20
Yoshito Kamiya, Satoru Ota, Shintaro Okumiya, Kosuke Yamashita, Akihiro Takaki, Shigeki Ito
OBJECTIVES: Iodine-123 metaiodobenzylguanidine ((123)I-MIBG) myocardial scintigraphy has been used to evaluate cardiac sympathetic denervation in Lewy body disease (LBD), including Parkinson's disease (PD) and dementia with Lewy bodies (DLB). The heart-to-mediastinum ratio (H/M) in PD and DLB is significantly lower than that in Parkinson's plus syndromes and Alzheimer's disease. Although this ratio is useful for distinguishing LBD from non-LBD, it fluctuates depending on the system performance of the gamma cameras...
2017: Asia Oceania Journal of Nuclear Medicine & Biology
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