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https://www.readbyqxmd.com/read/28806074/mechanical-bond-protected-air-stable-radicals
#1
Junling Sun, Zhichang Liu, Wei-Guang Liu, Yilei Wu, Yuping Wang, Jonathan C Barnes, Keith R Hermann, William A Goddard, Michael R Wasielewski, J Fraser Stoddart
Radical templation centered around a heterotrisradical tricationic inclusion complex DB(•+)⊂DAPQT(2(•+)), assembled from an equimolar mixture of a disubstituted 4,4'-bipyridinium radical cation (DB(•+)) and an asymmetric cyclophane bisradical dication (DAPQT(2(•+))), affords a symmetric [2]catenane (SC•7PF6) and an asymmetric [2]catenane (AC•7PF6) on reaction of the 1:1 complex with diazapyrene and bipyridine, respectively. Both these highly charged [2]catenanes have been isolated as air-stable mono-radicals and characterised by EPR spectroscopy...
August 14, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28805980/an-environmental-pollutant-9-10-phenanthrenequinone-activates-human-trpa1-via-critical-cysteines-621-and-665
#2
Katsuhiko Muraki, Takashi Sekine, Yuna Ando, Hiroka Suzuki, Noriyuki Hatano, Tadashi Hirata, Yukiko Muraki
Transient receptor potential ankyrin 1 (TRPA1) is activated by noxious cold, mechanical stimulation, and irritant chemicals. In our recent study, 9, 10-phenanthrenequinone (9,10-PQ) is the most potent irritant for activation of NRF2 among 1395 cigarette smoke components and it may be, therefore, important to find its additional targets. Here, we show that 9,10-PQ functions as an activator of TRPA1 in human embryonic kidney (HEK) cells expressing human wild-type TRPA1 (HEK-wTRPA1) and human alveolar A549 (A549) cells...
August 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28805433/overriding-actions-in-parkinson-s-disease-impaired-stopping-and-changing-of-motor-responses
#3
Wery P M van den Wildenberg, K Richard Ridderinkhof, Nelleke C van Wouwe, Joseph S Neimat, Theodore R Bashore, Scott A Wylie
We administered a stop-change paradigm, an extended version of the stop task that requires (a) stopping an ongoing motor response and (b) changing to an alternative (change) response. Performance of a group of patients diagnosed with Parkinson's disease (PD) and taking dopaminergic medication was compared with that of matched healthy control (HC) participants. Behavioral results indicated that response latencies to the initial go signal did not distinguish between the 2 groups, but that stopping latencies were prolonged in PD patients...
August 14, 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28805100/older-adults-with-a-combination-of-vision-and-hearing-impairment-experience-higher-rates-of-cognitive-impairment-functional-dependence-and-worse-outcomes-across-a-set-of-quality-indicators
#4
Jacob G S Davidson, Dawn M Guthrie
OBJECTIVES: Hearing and vision impairment were examined across several health-related outcomes and across a set of quality indicators (QIs) in home care clients with both vision and hearing loss (or dual sensory impairment [DSI]). METHOD: Data collected using the Resident Assessment Instrument for Home Care (RAI-HC) were analyzed in a sample of older home care clients. The QIs represent the proportion of clients experiencing negative outcomes (e.g., falls, social isolation)...
August 1, 2017: Journal of Aging and Health
https://www.readbyqxmd.com/read/28803850/association-of-exposure-to-manganese-and-iron-with-striatal-and-thalamic-gaba-and-other-neurometabolites-neuroimaging-results-from-the-weldox-ii-study
#5
Swaantje Casjens, Urike Dydak, Shalmali Dharmadhikari, Anne Lotz, Martin Lehnert, Clara Quetscher, Christoph Stewig, Benjamin Glaubitz, Tobias Schmidt-Wilcke, David Edmondson, Chien-Lin Yeh, Tobias Weiss, Christoph van Thriel, Lennard Herrmann, Siegfried Muhlack, Dirk Woitalla, Michael Aschner, Thomas Brüning, Beate Pesch
OBJECTIVE: Magnetic resonance spectroscopy (MRS) is a non-invasive method to quantify neurometabolite concentrations in the brain. Within the framework of the WELDOX II study, we investigated the association of exposure to manganese (Mn) and iron (Fe) with γ-aminobutyric acid (GABA) and other neurometabolites in the striatum and thalamus of 154 men. MATERIAL AND METHODS: GABA-edited and short echo-time MRS at 3T was used to assess brain levels of GABA, glutamate, total creatine (tCr) and other neurometabolites...
August 10, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28803766/different-neural-routes-to-autobiographical-memory-recall-in-healthy-people-and-individuals-with-left-medial-temporal-lobe-epilepsy
#6
Cornelia McCormick, Morris Moscovitch, Taufik A Valiante, Melanie Cohn, Mary Pat McAndrews
Individuals with medial temporal lobe epilepsy (mTLE) are poor at recalling vivid details from autobiographical memories (AM), instead retrieving gist-like schematic memories. Recent research has suggested that this impoverished recall in comparison to controls may reflect (1) differential engagement of anterior vs posterior regions of the hippocampus (HC) and/or (2) differences between the engagement of the HC vs the ventromedial prefrontal cortex (vmPFC). Here we examined these hypotheses by comparing connectivity amongst hippocampal regions and between vmPFC and other brain regions during construction (retrieval of a particular event) vs elaboration (retrieval of perceptual detail) phases of AM recall in 12 individuals with left mTLE and 12 matched controls...
August 10, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28803710/intrathecal-2-hydroxypropyl-%C3%AE-cyclodextrin-decreases-neurological-disease-progression-in-niemann-pick-disease-type-c1-a-non-randomised-open-label-phase-1-2-trial
#7
Daniel S Ory, Elizabeth A Ottinger, Nicole Yanjanin Farhat, Kelly A King, Xuntian Jiang, Lisa Weissfeld, Elizabeth Berry-Kravis, Cristin D Davidson, Simona Bianconi, Lee Ann Keener, Ravichandran Rao, Ariane Soldatos, Rohini Sidhu, Kimberly A Walters, Xin Xu, Audrey Thurm, Beth Solomon, William J Pavan, Bernardus N Machielse, Mark Kao, Steven A Silber, John C McKew, Carmen C Brewer, Charles H Vite, Steven U Walkley, Christopher P Austin, Forbes D Porter
BACKGROUND: Niemann-Pick disease, type C1 (NPC1) is a lysosomal storage disorder characterised by progressive neurodegeneration. In preclinical testing, 2-hydroxypropyl-β-cyclodextrins (HPβCD) significantly delayed cerebellar Purkinje cell loss, slowed progression of neurological manifestations, and increased lifespan in mouse and cat models of NPC1. The aim of this study was to assess the safety and efficacy of lumbar intrathecal HPβCD. METHODS: In this open-label, dose-escalation phase 1-2a study, we gave monthly intrathecal HPβCD to participants with NPC1 with neurological manifestation at the National Institutes of Health (NIH), Bethesda, MD, USA...
August 10, 2017: Lancet
https://www.readbyqxmd.com/read/28803557/altered-intrinsic-functional-connectivity-of-the-cingulate-cortex-in-children-with-severe-temper-outbursts
#8
Amy Krain Roy, Randi Bennett, Jonathan Posner, Leslie Hulvershorn, F Xavier Castellanos, Rachel G Klein
Severe temper outbursts (STO) in children are associated with impaired school and family functioning and may contribute to negative outcomes. These outbursts can be conceptualized as excessive frustration responses reflecting reduced emotion regulation capacity. The anterior cingulate cortex (ACC) has been implicated in negative affect as well as emotional control, and exhibits disrupted function in children with elevated irritability and outbursts. This study examined the intrinsic functional connectivity (iFC) of a region of the ACC, the anterior midcingulate cortex (aMCC), in 5- to 9-year-old children with STO (n = 20), comparing them to children with attention-deficit/hyperactivity disorder (ADHD) without outbursts (ADHD; n = 18)...
August 14, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28803348/effect-of-small-proportion-of-butanol-additive-on-the-performance-emission-and-combustion-of-australian-native-first-and-second-generation-biodiesel-in-a-diesel-engine
#9
Md Mofijur Rahman, Mohammad Golam Rasul, Nur Md Sayeed Hassan, Abul Kalam Azad, Md Nasir Uddin
This paper aims to investigate the effect of the addition of 5% alcohol (butanol) with biodiesel-diesel blends on the performance, emissions, and combustion of a naturally aspirated four stroke multi-cylinder diesel engine at different engine speeds (1200 to 2400 rpm) under full load conditions. Three types of local Australian biodiesel, namely macadamia biodiesel (MB), rice bran biodiesel (RB), and waste cooking oil biodiesel (WCB), were used for this study, and the data was compared with results for conventional diesel fuel (B0)...
August 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28802641/enhanced-effects-of-dna-vaccine-against-botulinum-neurotoxin-serotype-a-by-targeting-antigen-to-dendritic-cells
#10
Bo-Yang Chen, Guo Zhou, Qing-Li Li, Jian-Sheng Lu, Dan-Yang Shi, Xiao-Bin Pang, Xiao-Wei Zhou, Yun-Zhou Yu, Pei-Tang Huang
As dendritic cells (DCs) play a critical role in priming antigen-specific immune responses, the efficacy of DNA vaccines may be enhanced by targeting the encoded antigen proteins to DCs. In this study, we constructed a DC-targeted DNA vaccine encoding the Hc domain of botulinum neurotoxin serotype A (AHc) fused with scDEC, a single-chain Fv antibody (scFv) specific for the DC-restricted antigen-uptake receptor DEC205. Intramuscular injections of mice with the DC-targeted DNA vaccine (pVAX1-scDEC-AHc) stimulated more DCs to mature than the non-targeted DNA vaccine (pVAX1-SAHc) in the splenocytes...
August 9, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28802509/value-of-strain-imaging-and-maximal-oxygen-consumption-in-patients-with-hypertrophic-cardiomyopathy
#11
Kegan J Moneghetti, Davide Stolfo, Jeffrey W Christle, Yukari Kobayashi, Gherardo Finocchiaro, Gianfranco Sinagra, Jonathan Myers, Euan A Ashley, Francois Haddad, Matthew T Wheeler
Longitudinal strain (LS) has been shown to be predictive of outcome in hypertrophic cardiomyopathy (HC). Percent predicted peak oxygen uptake (ppVO2), among other cardiopulmonary exercise testing (CPX) metrics, is a strong predictor of prognosis in HC. However, there has been limited investigation into the combination of LS and CPX metrics. This study sought to determine how LS and parameters of exercise performance contribute to prognosis in HC. One hundred and thirty-one consecutive patients with HC who underwent CPX and stress echocardiography were included...
July 17, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28801837/blunt-injuries-related-to-equestrian-sports-results-from-an-international-prospective-trauma-database-analysis
#12
Christian D Weber, Anthony R Nguyen, Rolf Lefering, Martijn Hofman, Frank Hildebrand, Hans-Christoph Pape
INTRODUCTION: The objective of this study was to investigate the nature, management, and outcome of major injuries related to equestrian sports and to define the at-risk groups for serious and life-threatening injuries. METHODS: We analyzed demographic, pre-hospital, clinical, and outcome data from an international population-based prospective trauma database (TraumaRegister DGU®). Patients with major injuries (Injury Severity Score [ISS] ≥9 points) related to equestrian sports activities were included (January 1, 1993, to December 31, 2012)...
August 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28800855/radiographic-analysis-of-the-lower-limbs-using-the-hip-calcaneus-line-in-healthy-individuals-and-in-patients-with-varus-knee-osteoarthritis
#13
Toshikazu Tanaka, Koji Takayama, Shingo Hashimoto, Noriyuki Kanzaki, Shinya Hayashi, Ryosuke Kuroda, Tomoyuki Matsumoto
BACKGROUND: Several recent reports define the line from the centre of the femoral head to the lowest point of the calcaneus. The purpose of this study was to comparatively examine the usefulness of the hip-calcaneus (HC) line and hip-ankle (HA) line for the evaluation of lower-limb alignment in healthy individuals and in patients with osteoarthritis (OA). METHODS: Participants included 34 healthy individuals (mean age, 26.4years) and 34 patients with OA (mean age, 74...
August 8, 2017: Knee
https://www.readbyqxmd.com/read/28800513/serum-tnf-related-weak-inducer-of-apoptosis-tweak-and-tnf-related-apoptosis-inducing-ligand-trail-levels-of-patients-with-bipolar-disorder-in-manic-episode-in-remission-and-healthy-controls
#14
Merve Cingi Yirün, Onur Yirün, Kübranur Ünal, Rabia Nazik Yüksel, Neslihan Altunsoy, Elif Tatlidil Yaylaci, Makbule Çiğdem Aydemir, Erol Göka
TNF-related weak inducer of apoptosis (TWEAK) and TNF-related apoptosis-inducing ligand (TRAIL) are members of TNF superfamily, which has various roles in immunologic and inflammatory reactions in the organism. Pathophysiology in bipolar disorder is still under investigation and altered serum levels of cytokines are often encountered. Aim of this study is to detect serum TWEAK and TRAIL levels of patients with bipolar disorder and healthy controls. For this purpose, 55 patients with bipolar disorder -27 manic episode (ME), 28 remission (RE) and 29 healthy controls (HC) were included...
August 1, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28800340/reducing-the-rate-of-misdiagnosis-in%C3%A2-patients-with-chronic-disorders-of%C3%A2-consciousness-is-there-a-place-for-audiovisual-stimulation
#15
Antonino Naro, Antonino Leo, Rocco Bruno, Antonino Cannavò, Antonio Buda, Alfredo Manuli, Alessia Bramanti, Placido Bramanti, Rocco Salvatore Calabrò
BACKGROUND: The patients with chronic Disorders of Consciousness (DoC) mostly present with extremely challenging differential diagnosis. The advanced analysis of electroencephalographic (EEG) signals induced by brain stimulation paradigms may provide an appropriate approach to differentiate patients with DoC, besides the clinical assessment. OBJECTIVE: This study was performed with an objective of identifying residual brain network perturbations following an innovative, non-invasive audiovisual stimulation protocol, which could be related to behavioral responsiveness in patients with DoC...
August 11, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28800325/classification-of-alzheimer-s-disease-and-prediction-of-mild-cognitive-impairment-conversion-using-histogram-based-analysis-of-patient-specific-anatomical-brain-connectivity-networks
#16
Iman Beheshti, Norihide Maikusa, Morteza Daneshmand, Hiroshi Matsuda, Hasan Demirel, Gholamreza Anbarjafari
In this study, we investigated the early detection of Alzheimer's disease (AD) and mild cognitive impairment (MCI) conversion to AD through individual structural connectivity networks using structural magnetic resonance imaging (sMRI) data. In the proposed method, the cortical morphometry of individual gray matter images were used to construct structural connectivity networks. A statistical feature generation approach based on histogram-based feature generation procedure was proposed to represent a statistical-pattern of connectivity networks from a high-dimensional space into low-dimensional feature vectors...
August 8, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28800164/b-cell-phenotypes-in-patients-with-rheumatoid-arthritis-relapsing-after-rituximab-expression-of-b-cell-activating-factor-binding-receptors-on-b-cell-subsets
#17
Elena Becerra, Inmaculada De La Torre, Maria J Leandro, Geraldine Cambridge
OBJECTIVES: Serum levels of B cell activating factor (BAFF) rise following Rituximab (RTX) therapy in patients with Rheumatoid arthritis (RA). Initiation of naïve B cell return to the periphery and autoreactive B cell expansion leading to relapse after RTX may therefore be linked to interactions between BAFF and BAFF-binding receptors (BBR). METHODS: Relationships between serum BAFF and BBR expression (BAFFR, TACI and BCMA) were determined on B cell subsets, defined using IgD/CD38...
August 11, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28799879/the-pathophysiology-of-chronic-noncommunicating-hydrocephalus-lessons-from-continuous-intracranial-pressure-monitoring-and-ventricular-infusion-testing
#18
Per Kristian Eide
OBJECTIVE The pathophysiology of chronic noncommunicating hydrocephalus (ncHC) is poorly understood. This present study explored whether lessons about the pathophysiology of this clinical entity might be retrieved from results of overnight monitoring of pulsatile and static intracranial pressure (ICP) and ventricular infusion testing. METHODS The study cohort included adult patients (> 20 years of age) with chronic ncHC due to aqueductal stenosis in whom symptoms had lasted a minimum of 6 months. A reference cohort consisted of age- and sex-matched patients managed for communicating HC (cHC)...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799726/external-hyphae-of-rhizophagus-irregularis-daom-197198-are-less-sensitive-to-low-ph-than-roots-in-arbuscular-mycorrhizae-evidence-from-axenic-culture-system
#19
Ning Wang, Zengwei Feng, Yang Zhou, Honghui Zhu, Qing Yao
The growth of plant roots and arbuscular mycorrhizal fungi (AMF) can be inhibited by low pH; however, it is largely unknown which is more sensitive to low pH. This study aimed to compare the physiological and molecular responses of external hyphae (EH) and roots to low pH in terms of growth, development and functioning. We established AM symbiosis in a two-compartmented system (root compartment, RC; hyphal compartment, HC) using AMF and transformed hairy roots and exposed them to pH 6.5 and/or pH 4.5. The results showed that pH 4...
August 11, 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28798669/receptor-mechanisms-mediating-the-pro-nociceptive-action-of-hydrogen-sulfide-in-rat-trigeminal-neurons-and-meningeal-afferents
#20
Kseniya Koroleva, Alsu Mustafina, Aleksey Yakovlev, Anton Hermann, Rashid Giniatullin, Guzel Sitdikova
Hydrogen sulfide (H2S), a well-established member of the gasotransmitter family, is involved in a variety of physiological functions, including pro-nociceptive action in the sensory system. Although several reports have shown that H2S activates sensory neurons, the molecular targets of H2S action in trigeminal (TG) nociception, implicated in migraine, remains controversial. In this study, using suction electrode recordings, we investigate the effect of the H2S donor, sodium hydrosulfide (NaHS), on nociceptive firing in rat meningeal TG nerve fibers...
2017: Frontiers in Cellular Neuroscience
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