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https://www.readbyqxmd.com/read/28229903/acute-and-subchronic-toxicity-studies-of-methanol-extract-of-polygonum-minus-leaves-in-sprague-dawley-rats
#1
Parayil Varghese Christapher, Subramani Parasuraman, Mohd Zaini Asmawi, Vikneswaran Murugaiyah
Medicinal plant preparations may contain high levels of toxic chemical constituents to potentially cause serious harm to animals and/or humans. Thus, toxicity studies are important to assess the toxic effects of plant derived products. Polygonum minus is used traditionally for different ailments in Southeast Asia. This study was conducted to establish the acute and subchronic toxicity profile of the methanol extract of P. minus leaves. The acute toxicity study showed that the methanol extract of P. minus is safe even at the highest dose tested of 2000 mg/kg in female Sprague Dawley rats...
February 13, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28229895/impulse-control-disorders-and-levodopa-induced-dyskinesias-in-parkinson-s-disease-an-update
#2
REVIEW
Valerie Voon, T Celeste Napier, Michael J Frank, Veronique Sgambato-Faure, Anthony A Grace, Maria Rodriguez-Oroz, Jose Obeso, Erwan Bezard, Pierre-Olivier Fernagut
Dopaminergic medications used in the treatment of patients with Parkinson's disease are associated with motor and non-motor behavioural side-effects, such as dyskinesias and impulse control disorders also known as behavioural addictions. Levodopa-induced dyskinesias occur in up to 80% of patients with Parkinson's after a few years of chronic treatment. Impulse control disorders, including gambling disorder, binge eating disorder, compulsive sexual behaviour, and compulsive shopping occur in about 17% of patients with Parkinson's disease on dopamine agonists...
March 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28223210/a-novel-glp-1-gip-dual-receptor-agonist-protects-from-6-ohda-lesion-in-a-rat-model-of-parkinson-s-disease
#3
Jaishree Jalewa, Mohit Kumar Sharma, Simon Gengler, Christian Hölscher
The incretins glucagon-like peptide 1 (GLP-1) and glucose dependent insulinotropic polypeptide (GIP) are growth factors that have shown neuroprotective effects in animal models of Parkinson's and Alzheimer's disease. In addition, the GLP-1 mimetic exendin-4 has shown protective effects in a clinical trial in Parkinson's disease (PD) patients. GLP-1 analogues are currently on the market as treatments for type II diabetes. We previously showed that the novel dual agonist (DA-JC1) was effective in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) mouse model of PD...
February 18, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28223129/regenerative-medicine-in-huntington-s-disease-strengths-and-weaknesses-of-preclinical-studies
#4
REVIEW
A M Tartaglione, P Popoli, G Calamandrei
TARTAGLIONE, A.M., P. Popoli and G. Calamandrei. Regenerative medicine in Huntington's disease: strengths and weaknesses of pre-clinical studies. NEUROSCIENCE BIOBEHAV REV (2016). Huntington's disease (HD) is an inherited neurodegenerative disorder, characterized by impairment in motor, cognitive and psychiatric domains. Currently, there is no specific therapy to act on the onset or progression of HD. The marked neuronal death observed in HD is a main argument in favour of stem cells (SCs) transplantation as a promising therapeutic perspective to replace the population of lost neurons and restore the functionality of the damaged circuitry...
February 18, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28222546/recovering-functional-independence-after-a-stroke-through-modified-constraint-induced-therapy
#5
A Doussoulin, M Arancibia, J Saiz, A Silva, M Luengo
BACKGROUND: Population ageing and changes in the epidemiological profile of neurological pathologies has resulted in an increase in patients with disabilities. Rehabilitation strategies such as Modified Constraint-Induced Movement Therapy (CIMTm) play a key role in treating patients with neurologic deficiencies and motor impairments. This intervention is intended to mitigate disability, promote maximum functional independence, and optimize social and economic participation of patients with upper extremity weakness...
January 31, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28221361/dynamic-control-of-chirality-and-self-assembly-of-double-stranded-helicates-with-light
#6
Depeng Zhao, Thomas van Leeuwen, Jinling Cheng, Ben L Feringa
Helicity switching in biological and artificial systems is a fundamental process that allows for the dynamic control of structures and their functions. In contrast to chemical approaches to responsive behaviour in helicates, the use of light as an external stimulus offers unique opportunities to invert the chirality of helical structures in a non-invasive manner with high spatiotemporal precision. Here, we report that unidirectional rotary motors with connecting oligobipyridyl ligands, which can dynamically change their chirality upon irradiation, assemble into metal helicates that are responsive to light...
March 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28220928/malt-combined-motor-and-language-therapy-tool-for-brain-injury-patients-using-kinect
#7
Maitreyee Wairagkar, Rachel McCrindle, Holly Robson, Lotte Meteyard, Malcom Sperrin, Andy Smith, Moyra Pugh
BACKGROUND: The functional connectivity and structural proximity of elements of the language and motor systems result in frequent co-morbidity post brain injury. Although rehabilitation services are becoming increasingly multidisciplinary and "integrated", treatment for language and motor functions often occurs in isolation. Thus, behavioural therapies which promote neural reorganisation do not reflect the high intersystem connectivity of the neurologically intact brain. As such, there is a pressing need for rehabilitation tools which better reflect and target the impaired cognitive networks...
February 21, 2017: Methods of Information in Medicine
https://www.readbyqxmd.com/read/28213755/pedagogical-approaches-to-and-effects-of-fundamental-movement-skill-interventions-on-health-outcomes-a-systematic-review
#8
REVIEW
Claire Tompsett, Ross Sanders, Caitlin Taylor, Stephen Cobley
BACKGROUND: Fundamental movement skills (FMS) are assumed to be the basic prerequisite motor movements underpinning coordination of more integrated and advanced movement capabilities. FMS development and interventions have been associated with several beneficial health outcomes in individual studies. OBJECTIVE: The primary aim of this review was to identify FMS intervention characteristics that could be optimised to attain beneficial outcomes in children and adolescents, while the secondary aim was to update the evidence as to the efficacy of FMS interventions on physiological, psychological and behavioural health outcomes...
February 18, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28213152/central-neuronal-motor-behaviour-in-skilled-and-less-skilled-novices-approaching-sports-specific-movement-techniques
#9
Tobias Vogt, Kouki Kato, Stefan Schneider, Stefan Türk, Kazuyuki Kanosue
Research on motor behavioural processes preceding voluntary movements often refers to analysing the readiness potential (RP). For this, decades of studies used laboratory setups with controlled sports-related actions. Further, recent applied approaches focus on athlete-non-athlete comparisons, omitting possible effects of training history on RP. However, RP preceding real sport-specific movements in accordance to skill acquisition remains to be elucidated. Therefore, after familiarization 16 right-handed males with no experience in archery volunteered to perform repeated sports-specific movements, i...
February 14, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28211789/the-cortical-connectivity-of-the-periaqueductal-gray-and-the-conditioned-response-to-the-threat-of-breathlessness
#10
Olivia K Faull, Kyle Ts Pattinson
Previously we observed differential activation in individual columns of the periaqueductal grey (PAG) during breathlessness and its conditioned anticipation (Faull et al., 2016). Here, we have extended this work by determining how the individual columns of the PAG interact with higher cortical centres, both at rest and in the context of breathlessness threat. Activation was observed in ventrolateral PAG (vlPAG) and lateral PAG (lPAG), where activity scaled with breathlessness intensity ratings, revealing a potential interface between sensation and cognition during breathlessness...
February 17, 2017: ELife
https://www.readbyqxmd.com/read/28211486/motor-phenotype-is-not-associated-with-vascular-dysfunction-in-symptomatic-huntington-s-disease-transgenic-r6-2-160-cag-mice
#11
A Di Pardo, A Carrizzo, A Damato, S Castaldo, E Amico, L Capocci, M Ambrosio, F Pompeo, C De Sanctis, C C Spinelli, A A Puca, P Remondelli, V Maglione, C Vecchione
Whereas Huntington's disease (HD) is unequivocally a neurological disorder, a critical mass of emerging studies highlights the occurrence of peripheral pathology like cardiovascular defects in both animal models and humans. The overt impairment in cardiac function is normally expected to be associated with peripheral vascular dysfunction, however whether this assumption is reasonable or not in HD is still unknown. In this study we functionally characterized the vascular system in R6/2 mouse model (line 160 CAG), which recapitulates several features of human pathology including cardiac disease...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28208109/stability-against-backward-balance-loss-age-related-modifications-following-slip-like-perturbations-of-multiple-amplitudes
#12
Dario Martelli, Federica Aprigliano, Peppino Tropea, Guido Pasquini, Silvestro Micera, Vito Monaco
Falls are one of the most serious problems in the elderly. Although previous studies clearly link the increased risk of falls with ageing, the mechanisms responsible for the modifications of reactive motor behaviours in response to external perturbations are not yet fully understood. This study investigated how the stability against backward balance loss is affected by aging and intensity of perturbations. The Margin of Stability (MoS) was estimated while eight young and eight elderly adults managed three slip-like perturbations of different intensities while walking at the same normalized speed...
February 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28207863/identification-of-age-dependent-motor-and-neuropsychological-behavioural-abnormalities-in-a-mouse-model-of-mucopolysaccharidosis-type-ii
#13
Hélène F E Gleitz, Claire O'Leary, Rebecca J Holley, Brian W Bigger
Severe mucopolysaccharidosis type II (MPS II) is a progressive lysosomal storage disease caused by mutations in the IDS gene, leading to a deficiency in the iduronate-2-sulfatase enzyme that is involved in heparan sulphate and dermatan sulphate catabolism. In constitutive form, MPS II is a multi-system disease characterised by progressive neurocognitive decline, severe skeletal abnormalities and hepatosplenomegaly. Although enzyme replacement therapy has been approved for treatment of peripheral organs, no therapy effectively treats the cognitive symptoms of the disease and novel therapies are in development to remediate this...
2017: PloS One
https://www.readbyqxmd.com/read/28201743/mecp2-deficiency-results-in-robust-rett-like-behavioural-and-motor-deficits-in-male-and-female-rats
#14
Kelsey C Patterson, Virginia E Hawkins, Kara M Arps, Daniel K Mulkey, Michelle L Olsen
No abstract text is available yet for this article.
December 15, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/28197342/the-function-of-fgfr1-signalling-in-the-spinal-cord-therapeutic-approaches-using-fgfr1-ligands-after-spinal-cord-injury
#15
REVIEW
Barbara Haenzi, Lawrence D F Moon
Extensive research is ongoing that concentrates on finding therapies to enhance CNS regeneration after spinal cord injury (SCI) and to cure paralysis. This review sheds light on the role of the FGFR pathway in the injured spinal cord and discusses various therapies that use FGFR activating ligands to promote regeneration after SCI. We discuss studies that use peripheral nerve grafts or Schwann cell grafts in combination with FGF1 or FGF2 supplementation. Most of these studies show evidence that these therapies successfully enhance axon regeneration into the graft...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28195063/generation-of-membrane-bound-catechol-o-methyl-transferase-deficient-mice-with-disctinct-sex-dependent-behavioral-phenotype
#16
A Tammimaki, A Aonurm-Helm, F P Zhang, M Poutanen, G Duran-Torres, A Garcia-Horsman, P T Mannisto
Catechol-O-methyltransferase (COMT) has two isoforms: soluble (S-COMT), which resides in the cytoplasm, and membrane-bound (MB-MT), anchored to intracellular membranes. COMT is involved in the O-methylation of L-DOPA, dopamine and other catechols. The exact role of MB-COMT is still mostly unclear. We wanted to create a novel genetically modified mouse model that specifically lacks MB-COMT activity and to study their behavioral phenotype. MB-COMT knock-in mutant mice were generated by introducing two point mutations in exon 2 of the Comt gene (ATGCTG->GAGCTC disabling the function of the P2 promoter and allowing only the P1-regulated S-COMT transcription...
December 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28193714/contributors-to-pedestrian-distraction-and-risky-behaviours-during-road-crossings-in-romania
#17
Cara Hamann, Diana Dulf, Erika Baragan-Andrada, Morgan Price, Corinne Peek-Asa
OBJECTIVE: Pedestrian fatalities due to collisions with motor vehicles are a large public health problem in Romania, ranking them among the highest in Eastern Europe. The purpose of this study was to gain a better understanding of crash factors by examining how roadway and environmental characteristics contribute to pedestrian distraction and risky behaviours at pedestrian MVC (PMVC) locations in Cluj County, Romania. METHODS: A sample of PMVC locations was selected from the 2010 Cluj County police reported crash database for on-site examination...
February 13, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28192749/ascorbic-acid-ameliorates-behavioural-deficits-and-neuropathological-alterations-in-rat-model-of-alzheimer-s-disease
#18
Olayemi Joseph Olajide, Emmanuel Olusola Yawson, Ismail Temitayo Gbadamosi, Tolulope Timothy Arogundade, Ezra Lambe, Kosisochukwu Obasi, Ismail Tayo Lawal, Abdulmumin Ibrahim, Kehinde Yomi Ogunrinola
Exploring the links between neural pathobiology and behavioural deficits in Alzheimer's disease (AD), and investigating substances with known therapeutic advantages over subcellular mechanisms underlying these dysfunctions could advance the development of potent therapeutic molecules for AD treatment. Here we investigated the efficacy of ascorbic acid (AA) in reversing aluminium chloride (AlCl3)-induced behavioural deficits and neurotoxic cascades within prefrontal cortex (PFC) and hippocampus of rats. A group of rats administered oral AlCl3 (100mg/kg) daily for 15days showed degenerative changes characterised by significant weight loss, reduced exploratory/working memory, frontal-dependent motor deficits, cognitive decline, memory dysfunction and anxiety during behavioural assessments compared to control...
February 6, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28189001/functional-outcome-at-school-age-of-children-born-with-gastroschisis
#19
Chiara C M M Lap, Sandra W Bolhuis, Koenraad N J A Van Braeckel, Sijmen A Reijneveld, Gwendolyn T R Manten, Arend F Bos, Jan B F Hulscher
OBJECTIVE: We aimed to determine motor, cognitive and behavioural outcomes of school aged children born with gastroschisis compared to matched controls. STUDY DESIGN: We compared outcomes of 16 children born with gastroschisis treated at the University Medical Center Groningen, the Netherlands, between 1999 and 2006 with 32 controls matched for gender, gestational age, birth weight, and corrected for small for gestational age (SGA) and parental socioeconomic status (SES)...
February 8, 2017: Early Human Development
https://www.readbyqxmd.com/read/28188814/how-people-with-multiple-sclerosis-cope-with-a-sustained-finger-motor-task-a-behavioural-and-fmri-study
#20
Laura Bonzano, Matteo Pardini, Luca Roccatagliata, Giovanni L Mancardi, Marco Bove
Motor and non-motor basal ganglia (BG) circuits can help healthy subjects cope with task-induced central fatigue and re-establish motor performance after deterioration. This work aimed to assess whether patients with multiple sclerosis (MS) were able to recover motor performance after deterioration due to a demanding task and whether BG activity played a role in performance recovery in this population. Fourteen patients with MS performed a finger-tapping sequence with their right hand during three fMRI sessions: at baseline, after a demanding finger motor task (5-min sequence repetition) and after a short rest period...
February 7, 2017: Behavioural Brain Research
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