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https://www.readbyqxmd.com/read/28813920/compensating-for-telecommunication-delays-during-robotic-telerehabilitation
#1
Leonardo J Consoni, Adriano A G Siqueira, Hermano I Krebs
Rehabilitation robotic systems may afford better care and telerehabilitation may extend the use and benefits of robotic therapy to the home. Data transmissions over distance are bound by intrinsic communication delays which can be significant enough to deem the activity unfeasible. Here we describe an approach that combines unilateral robotic telerehabilitation and serious games. This approach has a modular and distributed design that permits different types of robots to interact without substantial code changes...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813872/mit-skywalker-evaluating-comfort-of-bicycle-saddle-seat
#2
Rogerio S Goncalves, Taya Hamilton, Ali R Daher, Hiroaki Hirai, Hermano I Krebs
The MIT-Skywalker is a robotic device developed for the rehabilitation of gait and balance after a neurological injury. This device has been designed based on the concept of a passive walker and provides three distinct training modes: discrete movement, rhythmic movement, and balance training. In this paper, we present our efforts to evaluate the comfort of a bicycle/saddle seat design for the system's novel actuated body weight support device. We employed different bicycle and saddle seats and evaluated comfort using objective and subjective measures...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813849/effects-of-partial-body-weight-support-and-functional-electrical-stimulation-on-gait-characteristics-during-treadmill-locomotion-pros-and-cons-of-saddle-seat-type-body-weight-support
#3
Natsumi Kataoka, Hiroaki Hirai, Taya Hamilton, Fumiaki Yoshikawa, Akira Kuroiwa, Yuma Nagakawa, Eichi Watanabe, Yudai Ninomaru, Yuri Saeki, Mitsunori Uemura, Fumio Miyazaki, Hiroshi Nakata, Tomoki Nishi, Hiroaki Naritomi, Hermano Igo Krebs
Robotic therapy for rehabilitation of the lower extremity is currently in its early stage of development. Aiming at exploring an efficacious intervention for gait rehabilitation, we investigate the characteristics of an end-effector gait-training device that combines saddle-seat-type body-weight-supported treadmill training with functional electrical stimulation (FES). This is a task-oriented approach to restoring voluntary control of locomotion in patients with neuromuscular diseases. We evaluate the differences between walking with saddle-seat-type support and with harness-type support, in terms of personal preference, the preferred walking speed, profiles of kinematics and ground reaction force, and the effectiveness of FES...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813819/mit-skywalker-on-the-use-of-a-markerless-system
#4
Rogerio S Goncalves, Taya Hamilton, Hermano I Krebs
This paper describes our efforts to employ the Microsoft Kinect as a low cost vision control system for the MIT-Skywalker, a robotic gait rehabilitation device. The Kinect enables an alternative markerless solution to control the MIT-Skywalker and allows a more user-friendly set-up. A study involving eight healthy subjects and two stroke survivors using the MIT-Skywalker device demonstrates the advantages and challenges of this new proposed approach.
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28812671/sulfate-radicals-enable-a-non-enzymatic-krebs-cycle-precursor
#5
Markus A Keller, Domen Kampjut, Stuart A Harrison, Markus Ralser
The evolutionary origins of the Krebs cycle (tricarboxylic acid cycle) are not currently clear. Despite the existence of a simple non-enzymatic Krebs cycle catalyst being dismissed only a few years ago as 'an appeal to magic', citrate and other intermediates have since been discovered on a carbonaceous meteorite and do interconvert non-enzymatically. To identify a metabolism-like non-enzymatic Krebs cycle catalyst, we used combinatorial, quantitative high-throughput metabolomics to systematically screen iron and sulfate compounds in a reaction mixture that orients on the typical components of Archaean sediment...
March 13, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28805368/pyrophosphate-recognition-and-sensing-in-water-using-bis-zinc-ii-dipicolylamino-functionalized-peptides
#6
Katrina A Jolliffe
Phosphate oxoanions and phosphorylated biomolecules (such as nucleotides, lipids, and proteins) play key roles in a wide range of biological processes. The ability to selectively detect these ions in the presence of each other has numerous applications in biochemistry and biomedicine. However, receptors and sensors that can discriminate between polyphosphate species with high selectivity and in biologically relevant conditions are rare. In this Account, we show how peptides (both cyclic and linear) can be used to position two zinc(II)dipicolylamine [Zn(II)DPA] binding sites in an appropriate arrangement to provide selective binding of pyrophosphate (PPi) in the presence of other polyphosphate species, including ATP, and in complex media such as cell growth buffer...
August 14, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28803734/erratum-to-mortality-associated-characteristics-of-patients-with-traumatic-brain-injury-at-the-university-teaching-hospital-of-kigali-rwanda-world-neurosurgery-102-2017-571-582
#7
Elizabeth Krebs, Charles J Gerardo, Lawrence P Park, Joao Ricardo Nickenig Vissoci, Jean Claude Byiringiro, Fidele Byiringiro, Stephen Rulisa, Nathan M Thielman, Catherine A Staton
No abstract text is available yet for this article.
August 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28781371/t-helper-type-17-cells-in-immune-mediated-glomerular-disease
#8
REVIEW
Christian F Krebs, Tilman Schmidt, Jan-Hendrik Riedel, Ulf Panzer
CD4(+) T cells are important drivers of tissue damage in immune-mediated renal diseases, such as anti-glomerular basement membrane glomerulonephritis, anti-neutrophil cytoplasmic antibody-associated glomerulonephritis, and lupus nephritis. The discovery of a distinct, IL-17-producing CD4(+) T-cell lineage termed T helper type 17 (TH17) cells has markedly advanced current understanding of the pathogenic mechanisms of organ-specific immunity and the pathways that lead to target organ damage. TH17 cells are characterized by the expression of the transcription factor RORγt, the production of the pro-inflammatory cytokines IL-17A, IL-17F, IL-22, and high expression of the chemokine receptor C-C-motif chemokine receptor 6 (CCR6)...
August 7, 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28776673/molecular-characterization-of-excipients-preferential-interactions-with-therapeutic-monoclonal-antibodies
#9
Jehoon Kim, Mark R H Krebs, Bernhardt L Trout
OBJECTIVES: This study reports global and local monoclonal antibody (mAb)-excipient interactions and the resulting thermodynamic and stabilization effects. METHODS: Molecular dynamics simulations are applied to quantify the interactions of key excipients (sucrose, sorbitol, arginine, citrate, histidine and NaCl) used in the formulations of three mAbs. The dynamic surface properties of the mAbs and preferential interaction coefficients for the excipients based on validated potential parameters are computed, in addition to the spatial aggregation propensity...
August 4, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28771732/direct-assessment-of-the-metabolic-origin-of-carbon-atoms-in-glutamate-from-illuminated-leaves-using-13-c-nmr
#10
Cyril Abadie, Jérémy Lothier, Edouard Boex-Fontvieille, Adam Carroll, Guillaume Tcherkez
Glutamate (Glu) is the cornerstone of nitrogen assimilation and photorespiration in illuminated leaves. Despite this crucial role, our knowledge of the flux to Glu de novo synthesis is rather limited. Here, we used isotopic labelling with (13) CO2 and (13) C-NMR analyses to examine the labelling pattern and the appearance of multi-labelled species of Glu molecules to trace the origin of C-atoms found in Glu. We also compared this with (13) C-labelling patterns in Ala and Asp, which reflect citrate (and thus Glu) precursors, that is, pyruvate and oxaloacetate...
August 3, 2017: New Phytologist
https://www.readbyqxmd.com/read/28770993/real-time-monitoring-of-insulin-using-a-graphene-field-effect-transistor-aptameric-nanosensor
#11
Zhuang Hao, Yibo Zhu, Xuejun Wang, Pavana Rotti, Christopher DiMarco, Scott Tyler, Xuezeng Zhao, John F Engelhardt, James C Hone, Qiao Lin
This paper presents an approach to the real-time, label-free, specific and sensitive detection of insulin using a graphene aptameric nanosensor. The nanosensor is configured as a field effect transistor (FET), whose graphene conducting channel is functionalized with a guanine-rich IGA3 aptamer. The negatively charged aptamer folds into a compact and stable anti-parallel or parallel G-quadruplex conformation upon binding with insulin, resulting in a change in the carrier density of graphene and thus its electrical conductance...
August 3, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28768153/effects-of-mechanical-ventilation-on-gene-expression-profiles-in-renal-allografts-from-brain-dead-rats
#12
Maximilia C Hottenrott, Joerg Krebs, Paolo Pelosi, Thomas Luecke, Patricia R M Rocco, Carsten Sticht, Annette Breedijk, Benito Yard, Charalambos Tsagogiorgas
Pathophysiological changes of brain death (BD) are impairing distal organ function and harming potential renal allografts. Whether ventilation strategies influence the quality of renal allografts from BD donors has not been thoroughly studied. 28 adult male Wistar rats were randomly assigned to four groups: 1) no brain death (NBD) with low tidal volume/low positive endexpiratory pressure (PEEP) titrated to minimal static elastance of the respiratory system (LVT/OLPEEP); 2) NBD with high tidal volume/low PEEP (HVT/LPEEP); 3) brain death (BD) with LVT/OLPEEP; and 4) BD with HVT/LPEEP...
July 30, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28763872/-research-of-the-biomarkers-in-pulmonary-and-extrapulmonary-acute-respiratory-distress-syndrome
#13
Q Yang, Z Q Li, H B Lan, S S Xiong, S S Wang, C S Yan
Objective: To explore the biomarkers that applied to pulmonary acute respiratory distress syndrome (ARDS) and extrapulmonary ARDS respectively. Methods: A total of 49 eligible patients with ARDS were selected from Department of Respiratory intensive care unite (ICU) , Department of General ICU and Department of Emergency ICU, the Second Affiliated Hospital of Nanchang University, during April 2015 and February 2016, and divided into pulmonary ARDS group (n=26) and extrapulmonary ARDS group (n=23) according to primary causes...
July 11, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28763297/adiponectin-and-leptin-as-first-trimester-markers-for-gestational-diabetes-mellitus-a-cohort-study
#14
Ida Näslund Thagaard, Lone Krebs, Jens-Christian Holm, Theis Lange, Torben Larsen, Michael Christiansen
BACKGROUND: Gestational diabetes mellitus (GDM) is increasing partly due to the obesity epidemic. Adipocytokines have thus been suggested as first trimester screening markers for GDM. In this study we explore the associations between body mass index (BMI) and serum concentrations of adiponectin, leptin, and the adiponectin/leptin ratio. Furthermore, we investigate whether these markers can improve the ability to screen for GDM in the first trimester. METHODS: A cohort study in which serum adiponectin and leptin were measured between gestational weeks 6+0 and 14+0 in 2590 pregnant women, categorized into normal weight, moderately obese, or severely obese...
August 1, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28762682/-use-of-citrate-in-patients-with-nephrolithiasis
#15
REVIEW
Martino Marangella
Citrate is a tricarboxylic acid and an intermediate metabolite of Krebs cycle. It contributes to oxidative metabolism of both kidney and liver. Alkaline sodium or potassium salts have the potential to increase alkaline reserve. In the kidney citrate is completely filtered at the glomerulus, undergoing to 10-40% tubular resorption. Renal insufficiency, even early, metabolic acidosis, potassium depletion induce hypocitraturia. Its importance in nephrolithiasis stems from its ability to form soluble complexes with calcium and to interfere with crystal formation, thus exerting a dual inhibition, thermodynamic and kinetic...
August 1, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28759882/oculomotricity-and-neurological-soft-signs-can-we-refine-the-endophenotype-a-study-in-subjects-belonging-to-the-spectrum-of-schizophrenia
#16
Simona Caldani, Isabelle Amado, Narjes Bendjemaa, François Vialatte, Célia Mam-Lam-Fook, Raphael Gaillard, Marie-Odile Krebs, Maria Pia Bucci
Alterations in eye tracking and motor impairments as well as Neurological Soft Signs (NSS) are frequently reported in patients with schizophrenia as well as in their relatives, and are proposed as endophenotype of the disease. This study investigated smooth pursuit eye movement and fixation task with distractors with a gap condition, two markers of inhibitory control mechanism, in 49 patients with schizophrenia, 24 ultra-high risk subjects, 41 full biological clinical siblings of patients and 48 controls. NSS were assessed as a marker of abnormal neurodevelopment...
June 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28759651/rare-hiv-1-transmitted-founder-lineages-identified-by-deep-viral-sequencing-contribute-to-rapid-shifts-in-dominant-quasispecies-during-acute-and-early-infection
#17
Gustavo H Kijak, Eric Sanders-Buell, Agnes-Laurence Chenine, Michael A Eller, Nilu Goonetilleke, Rasmi Thomas, Sivan Leviyang, Elizabeth A Harbolick, Meera Bose, Phuc Pham, Celina Oropeza, Kultida Poltavee, Anne Marie O'Sullivan, Erik Billings, Melanie Merbah, Margaret C Costanzo, Joanna A Warren, Bonnie Slike, Hui Li, Kristina K Peachman, Will Fischer, Feng Gao, Claudia Cicala, James Arthos, Leigh A Eller, Robert J O'Connell, Samuel Sinei, Lucas Maganga, Hannah Kibuuka, Sorachai Nitayaphan, Mangala Rao, Mary A Marovich, Shelly J Krebs, Morgane Rolland, Bette T Korber, George M Shaw, Nelson L Michael, Merlin L Robb, Sodsai Tovanabutra, Jerome H Kim
In order to inform the rational design of HIV-1 preventive and cure interventions it is critical to understand the events occurring during acute HIV-1 infection (AHI). Using viral deep sequencing on six participants from the early capture acute infection RV217 cohort, we have studied HIV-1 evolution in plasma collected twice weekly during the first weeks following the advent of viremia. The analysis of infections established by multiple transmitted/founder (T/F) viruses revealed novel viral profiles that included: a) the low-level persistence of minor T/F variants, b) the rapid replacement of the major T/F by a minor T/F, and c) an initial expansion of the minor T/F followed by a quick collapse of the same minor T/F to low frequency...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28758940/non-targeted-metabolomics-analysis-of-golden-retriever-muscular-dystrophy-affected-muscles-reveals-alterations-in-arginine-and-proline-metabolism-and-elevations-in-glutamic-and-oleic-acid-in-vivo
#18
Muhammad Abdullah, Joe N Kornegay, Aubree Honcoop, Traci L Parry, Cynthia J Balog-Alvarez, Sara K O'Neal, James R Bain, Michael J Muehlbauer, Christopher B Newgard, Cam Patterson, Monte S Willis
BACKGROUND: Like Duchenne muscular dystrophy (DMD), the Golden Retriever Muscular Dystrophy (GRMD) dog model of DMD is characterized by muscle necrosis, progressive paralysis, and pseudohypertrophy in specific skeletal muscles. This severe GRMD phenotype includes moderate atrophy of the biceps femoris (BF) as compared to unaffected normal dogs, while the long digital extensor (LDE), which functions to flex the tibiotarsal joint and serves as a digital extensor, undergoes the most pronounced atrophy...
July 29, 2017: Metabolites
https://www.readbyqxmd.com/read/28758595/vasodilator-effect-of-angiotensin-1-7-on-vascular-coronary-bed-of-rats-role-of-mas-ace-and-ace2
#19
Patrícia Lanza Moraes, Lucas Miranda Kangussu, Carlos Henrique Castro, Robson As Santos, Anderson José Ferreira, Alvair P Almeida
Angiotensin(Ang)-(1-7) is a biologically active member of the renin-angiotensin system that participates of the regulation of blood pressure. Although Ang-(1-7) is able to potentiate the vasodilator effect of bradykinin in coronary bed of rats, a direct vasodilator effect of Ang-(1-7) in this vascular bed has not been characterized. Thus, the aim of this study was to evaluate the mechanisms involved in the vasodilator effect of Ang-(1-7) in the vasculature of isolated rat hearts perfused according to the Langendorff technique at constant flow...
July 28, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28754099/antioxidant-and-vasorelaxant-activities-induced-by-northeastern-brazilian-fermented-grape-skins
#20
José George F Albuquerque, Valéria L Assis, Arthur J P O Almeida, Ionaldo J L D Basílio, Melissa N Luciano, Bruno R L A Meireles, Ângela M T M Cordeiro, Islânia G A Araújo, Robson C Veras, Thaís P Ribeiro, Isac A Medeiros
BACKGROUND: In northeastern Brazil, grape pomace has become a potential alternative byproduct because of the recover phenolic compounds from the vinification process. Comparative analyses were performed between lyophilized extract of grape skins from pomace, described as fermented (FGS), and fresh, unfermented (UGS) grape skins to show the relevant brand's composition upon the first maceration in winemaking. METHODS: The use of in vitro testing such as Folin-Ciocalteu's, DPPH free radical scavenger and HPLC methods were performed to evidence antioxidant effect and phenolic compounds...
July 28, 2017: BMC Complementary and Alternative Medicine
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