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https://www.readbyqxmd.com/read/28813830/toward-goal-oriented-robotic-gait-training-the-effect-of-gait-speed-and-stride-length-on-lower-extremity-joint-torques
#1
Robert L McGrath, Margaret Pires-Fernandes, Brian Knarr, Jill S Higginson, Fabrizio Sergi
Robot-assisted gait training is becoming increasingly common to support recovery of walking function after neurological injury. How to formulate controllers capable of promoting desired features in gait, i.e. goals, is complicated by the limited understanding of the human response to robotic input. A possible method to formulate controllers for goal-oriented gait training is based on the analysis of the joint torques applied by healthy subjects to modulate such goals. The objective of this work is to understand how sagittal plane joint torque is affected by two important gait parameters: gait speed (GS) and stride length (SL)...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813790/position-and-torque-control-via-rehabilitation-robot-and-functional-electrical-stimulation
#2
Christian A Cousin, Courtney A Rouse, Victor H Duenas, Warren E Dixon
Two common rehabilitation therapies for individuals possessing neurological conditions are functional electrical stimulation (FES) and robotic assistance. This paper focuses on combining the two rehabilitation strategies for use on the biceps brachii muscle group. FES is used to elicit muscle contractions to actuate the forearm and a rehabilitation robot is used to challenge the muscle group in its efforts. Two controllers were developed and implemented to accomplish the multifaceted objective, both of which achieve global exponential stability for position and torque tracking as proven through a Lyapunov stability analysis...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28811188/familial-1p36-3-microduplication-resulting-from-a-1p-9q-non-reciprocal-translocation
#3
Valentine Marquet, Sylvie Bourthoumieu, Amelia Dobrescu, Cécile Laroche-Raynaud, Catherine Yardin
Unlike the 1p36 microdeletion syndrome, which has been extensively described, 1p36 microduplications have rarely been reported. We describe a three years old boy presenting with a severe global developmental delay and a few dysmorphic features. Cytogenetic analyses revealed a maternally inherited 3.35 Mb microduplication of chromosomal band 1p36.3. The maternal grand-father is also carrier of the same chromosomal rearrangement. Interestingly, the duplicated 1p36.3 segment was found to be localized at the telomeric end of the long arms of a chromosome 9, probably deriving from a 1p36...
August 12, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28808202/-borneol-is-neuroprotective-against-permanent-cerebral-ischemia-in-rats-by-suppressing-production-of-proinflammatory-cytokines
#4
Lei Chang, Chun-Yu Yin, Hai-Yin Wu, Bin-Bin Tian, Yan Zhu, Chun-Xia Luo, Dong-Ya Zhu
Stroke is one of the leading causes of disability and death globally. It occurs when a major artery is occluded in the brain and leads to death of cells within the injured tissue. (+)-Borneol, a simple bicyclic monoterpene extracted from traditional Chinese medicine, is widely used in various types of diseases. However, no study has proved the effects of (+)-borneol on functional recovery from permanent ischemic stroke and the mechanism is still unknown. Here, we report that in the rat model of permanent cerebral ischemia, we found that (+)-borneol (1...
July 13, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28803703/viral-hijacking-of-formins-in-neurodevelopmental-pathologies
#5
REVIEW
Karen Racicot, Sarah VanOeveren, Art Alberts
The 2015 Zika virus (ZIKV) outbreak caused global concern when it was determined to cause microcephaly, hearing loss, and other neurodevelopmental manifestations upon fetal exposure. Significant progress has been made in our understanding of the interactions between ZIKV and the pregnant host, but there is still a critical need to understand how ZIKV and other neurotropic viruses affect fetal neurodevelopment. Diaphanous-related formins (Diaphs) have recently been identified as microcephaly-associated proteins in humans and mice...
August 10, 2017: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/28802915/neurological-evaluation-of-the-selection-stage-of-metaphor-comprehension-in-individuals-with-and-without-autism-spectrum-disorder
#6
Brea Chouinard, Joanne Volden, Ivor Cribben, Jacqueline Cummine
Because of their difficulties with figurative language in conversation, it is commonly thought that individuals with autism spectrum disorder (ASD) do not understand figurative meaning. However, recent research indicates that individuals with and without ASD are similar in the first two stages of metaphor comprehension, up to and including successful generation of the figurative meaning. In the current study, we used a sentence decision task to evaluate the subsequent stage of metaphor comprehension, the selection stage, which requires suppression/inhibition of the unintended meaning as part of selecting the intended meaning...
August 9, 2017: Neuroscience
https://www.readbyqxmd.com/read/28798922/practical-approach-to-the-patient-with-acute-neuromuscular-weakness
#7
REVIEW
Rajeev Nayak
Acute neuromuscular paralysis (ANMP) is a clinical syndrome characterized by rapid onset muscle weakness progressing to maximum severity within several days to weeks (less than 4 wk). Bulbar and respiratory muscle weakness may or may not be present. It is a common neurological emergency which requires immediate and careful investigations to determine the etiology because accurate diagnosis has significant impact on therapy and prognosis. Respiratory failure caused by neuromuscular weakness is considered as more critical than lung disease because its development may be insidious or subtle until sudden decompensation leads to life threatening hypoxia...
July 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28798312/the-hypothesis-that-helicobacter-pylori-predisposes-to-alzheimer-s-disease-is-biologically-plausible
#8
Contaldi Felice, Capuano Federico, Fulgione Andrea, Aiese Cigliano Riccardo, Sanseverino Walter, Iannelli Domenico, Medaglia Chiara, Capparelli Rosanna
There is epidemiological evidence that H. pylori might predispose to Alzheimer's disease. To understand the cellular processes potentially linking such unrelated events, we incubated the human gastric cells MNK-28 with the H. pylori peptide Hp(2-20). We then monitored the activated genes by global gene expression. The peptide modulated 77 genes, of which 65 are listed in the AlzBase database and include the hallmarks of Alzheimer's disease: APP, APOE, PSEN1, and PSEN2. A large fraction of modulated genes (30 out of 77) belong to the inflammation pathway...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28794150/peripheral-neuropathy-in-complex-inherited-diseases-an-approach-to-diagnosis
#9
REVIEW
Alexander M Rossor, Aisling S Carr, Helen Devine, Hoskote Chandrashekar, Ana Lara Pelayo-Negro, Davide Pareyson, Michael E Shy, Steven S Scherer, Mary M Reilly
Peripheral neuropathy is a common finding in patients with complex inherited neurological diseases and may be subclinical or a major component of the phenotype. This review aims to provide a clinical approach to the diagnosis of this complex group of patients by addressing key questions including the predominant neurological syndrome associated with the neuropathy, for example, spasticity, the type of neuropathy and the other neurological and non-neurological features of the syndrome. Priority is given to the diagnosis of treatable conditions...
August 9, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28790009/impact-of-a-visual-aid-on-discordance-between-physicians-and-family-members
#10
Gabrielle Burelli, Chloé Berthelier, Hélène Vanacker, Léonard Descaillot, Bénédicte Philippon-Jouve, Xavier Fabre, Mahmoud Kaaki, Jean-Charles Chakarian, Alexandre Domine, Pascal Beuret
OBJECTIVE: This study aimed to evaluate the impact of a visual aid on the discordance about prognosis between physicians and family members. METHODS: The study was performed in a general intensive care department with two 6-bed units. In the unit A, family members could consult a visual aid depicting day by day the evolution of global, hemodynamic, respiratory, renal and neurological conditions of the patient on a 10 point scale. In the unit B, they only received oral medical information...
August 5, 2017: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/28783942/codeine-precipitating-serotonin-syndrome-in-a-patient-in-therapy-with-antidepressant-and-triptan
#11
Giulia Milano, Werner Maria Natta, Alfredo Bello, Antonietta Martelli, Francesca Mattioli
The serotonin syndrome is a serioius medical condition due due to an intensive stimulation of setonin receptors. It is a rare, but severe, consequence of interaction between serotomimetic agents. This is a report of a 70-year-old woman steadily in therapy with venlafaxine and rizatriptan for migraine and major depressive syndrome. She was admitted to neurology unit for decreased light reflex with miotic pupils, global hyperreflexia, tremor, anxiety, ataxia and incoordination. The patient was diagnosed as a probable case of serotonin syndrome due to a pharmacological interaction between venlafaxine and rizatriptan trigged by opioid intake...
August 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28782643/downregulation-of-trb3-protects-neurons-against-apoptosis-induced-by-global-cerebral-ischemia-and-reperfusion-injury-in-rats
#12
Kai Wei, Li Wan, Jin Liu, Bo Zhang, Xuan Li, Yue Zhang, Chuanhan Zhang, Wenlong Yao
Global cerebral ischemia and reperfusion injury (GCI/R) can lead to neuronal apoptosis and contributes to permanent neurological sequelae. However, the underlying mechanism is largely unknown. Therefore, the present study aimed to assess the effects of GCI/R on the tribbles homolog 3 (TRB3) and to explore the role of TRB3 in GCI/R. The GCI/R model was developed in Sprague-Dawley male rats by four-vessel occlusion. Subsequently, the expressions of TRB3, endoplasmic reticulum stress markers, and apoptosis-associated proteins were examined by western blot at 1h, 6h, 12h, 24h, and 72h after GCI/R...
August 4, 2017: Neuroscience
https://www.readbyqxmd.com/read/28781085/human-toxocariasis
#13
REVIEW
Guangxu Ma, Celia V Holland, Tao Wang, Andreas Hofmann, Chia-Kwung Fan, Rick M Maizels, Peter J Hotez, Robin B Gasser
Parasitic nematodes of the genus Toxocara are socioeconomically important zoonotic pathogens. These parasites are usually directly transmitted to the human host via the faecal-oral route and can cause toxocariasis and associated complications, including allergic and neurological disorders. Although tens of millions of people are estimated to be exposed to or infected with Toxocara spp, global epidemiological information on the relationship between seropositivity and toxocariasis is limited. Recent findings suggest that the effect of toxocariasis on human health is increasing in some countries...
August 3, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28780000/systemic-infusions-of-anti-interleukin-1%C3%AE-neutralizing-antibodies-reduce-short-term-brain-injury-after-cerebral-ischemia-in-the-ovine-fetus
#14
Xiaodi Chen, Virginia Hovanesian, Syed Naqvi, Yow-Pin Lim, Richard Tucker, John E Donahue, Edward G Stopa, Barbara S Stonestreet
Perinatal hypoxic-ischemic reperfusion (I/R)-related brain injury is a leading cause of neurologic morbidity and life-long disability in children. Infants exposed to I/R brain injury develop long-term cognitive and behavioral deficits, placing a large burden on parents and society. Therapeutic strategies are currently not available for infants with I/R brain damage, except for hypothermia, which can only be used in full term infants with hypoxic-ischemic encephalopathy (HIE). Moreover, hypothermia is only partially protective...
August 2, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28779862/neurological-complications-of-renal-disease
#15
Jorge H Baluarte
Neurological manifestations related to electrolyte disorders, drug toxicity, and uremia are common in chronic kidney disease (CKD). Seizures and coma are frequent complications of acute renal insufficiency (uremia), whereas peripheral neuropathy and encephalopathy, observed in progressive uremia, are terminal events. Failure to excrete metabolic products causes their accumulation and can lead to severe intoxication. Clinically, the signs and symptoms of uremia can vary widely, depending on the biological characteristics of the patient, the specific type of renal disease, and the time of the uremic intoxication...
February 2017: Seminars in Pediatric Neurology
https://www.readbyqxmd.com/read/28768876/monoclonal-antibodies-against-zika-virus-therapeutics-and-their-implications-for-vaccine-design
#16
Qihui Wang, Jinghua Yan, George Fu Gao
Zika virus (ZIKV) has caused global concern due to its association with neurological complications in newborns and adults. Although no approved vaccines or antivirals against ZIKV infection to date, hundreds of monoclonal antibodies (MAbs) have been developed in a short period. Here, we first present a complete picture of the ZIKV MAbs and then focus on the neutralizing mechanisms and immune hot spot uncovered through structural studies, which provide insight for therapeutics and vaccine design.
August 2, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28768786/posterior-spinal-fusion-for-adolescent-idiopathic-scoliosis-using-a-convex-pedicle-screw-technique-a-novel-concept-of-deformity-correction
#17
A I Tsirikos, G Mataliotakis, N Bounakis
AIMS: We present the results of correcting a double or triple curve adolescent idiopathic scoliosis using a convex segmental pedicle screw technique. PATIENTS AND METHODS: We reviewed 191 patients with a mean age at surgery of 15 years (11 to 23.3). Pedicle screws were placed at the convexity of each curve. Concave screws were inserted at one or two cephalad levels and two caudal levels. The mean operating time was 183 minutes (132 to 276) and the mean blood loss 0...
August 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28768412/receptor-targeted-polymeric-nanostructures-capable-of-navigating-across-the-blood-brain-barrier-for-effective-delivery-of-neural-therapeutics
#18
Taru Dube, Sonika Chibh, Jibanananda Mishra, Jiban Jyoti Panda
The window of neurological maladies encompasses 600 known neurological disorders. In the last few years, an inordinate upsurge in the incidences of neuronal ailments with increased mortality rate has been witnessed globally. Despite noteworthy research in the discovery and development of neural therapeutics, brain drug delivery still encounters limited success due to meager perviousness of most of the drug molecules through the blood-brain barrier (BBB), a tight layer of endothelial cells that selectively impedes routing of the molecules across itself...
August 3, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28765371/zika-plasma-viral-dynamics-in-nonhuman-primates-provides-insights-into-early-infection-and-antiviral-strategies
#19
Katharine Best, Jeremie Guedj, Vincent Madelain, Xavier de Lamballerie, So-Yon Lim, Christa E Osuna, James B Whitney, Alan S Perelson
The recent outbreak of Zika virus (ZIKV) has been associated with fetal abnormalities and neurological complications, prompting global concern. Here we present a mathematical analysis of the within-host dynamics of plasma ZIKV burden in a nonhuman primate model, allowing for characterization of the growth and clearance of ZIKV within individual macaques. We estimate that the eclipse phase for ZIKV, the time between cell infection and viral production, is most likely short (∼4 h), the median within-host basic reproductive number R0 is 10...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28763742/the-increased-toxicity-of-uv-degraded-nitroguanidine-and-imx-101-to-zebrafish-larvae-evidence-implicating-oxidative-stress
#20
Kurt A Gust, Jacob K Stanley, Mitchell S Wilbanks, Michael L Mayo, Pornsawan Chappell, Shinita M Jordan, Lee C Moores, Alan J Kennedy, Natalie D Barker
Insensitive munitions (IMs) improve soldier safety by decreasing sympathetic detonation during training and use in theatre. IMs are being increasingly deployed, although the environmental effects of IM constituents such as nitroguanidine (NQ) and IM mixture formulations such as IMX-101 remain largely unknown. In the present study, we investigated the acute (96h) toxicity of NQ and IMX-101 to zebrafish larvae (21d post-fertilization), both in the parent materials and after the materials had been irradiated with environmentally-relevant levels of ultraviolet (UV) light...
September 2017: Aquatic Toxicology
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