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https://www.readbyqxmd.com/read/28636238/segmental-domain-selective-perdeuteration-and-small-angle-neutron-scattering-for-structural-analysis-of-multi-domain-proteins
#1
Miriam Sonntag, Pravin Jagtap, Bernd Simon, Marie-Sousai Appavou, Arie Geerlof, Ralf Stehle, Frank Gabel, Janosch Hennig, Michael Sattler
Multi-domain proteins play critical roles in fine-tuning essential processes in cellular signaling and gene regulation. Typically, multiple globular domains that are connected by flexible linkers undergo dynamic re-arrangements upon binding to protein, DNA or RNA ligands. RNA binding proteins (RBPs) represent an important class of multi-domain proteins, which regulate gene expression by recognizing linear or structured RNA sequence motifs. Here, we employ segmental perdeuteration of the three RNA recognition motif (RRM) domains in the RBP TIA-1 using Sortase A-mediated protein ligation...
June 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28634365/different-levels-of-blood-pressure-different-benefit-from-dual-antiplatelet-therapy-in-minor-stroke-or-tia-patients
#2
Jie Xu, Yongli Tao, Hao Li, Hongqiu Gu, Xuewei Xie, Xia Meng, Yuming Xu, Yilong Wang, Yongjun Wang
The study aimed to evaluate whether the benefits of dual antiplatelet therapy would be influenced by blood pressure (BP) levels, among acute minor stroke or transient ischemic attack (TIA). In CHANCE (Clopidogrel in High-Risk Patients with Acute Nondisabling cerebrovascular Events) trail, Patients were stratified by systolic BP (SBP) and diastolic BP (DBP) level measured on admission, respectively, using the supine position BP within 24 hours after symptoms onset. The primary efficacy outcome was stroke recurrence, bleeding was the safety outcome...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630782/remote-assessment-of-platelet-function-in-patients-with-acute-stroke-or-transient-ischaemic-attack
#3
Philip M Bath, Jane May, Katie Flaherty, Lisa J Woodhouse, Natalia Dovlatova, Sue C Fox, Timothy J England, Kailash Krishnan, Thompson G Robinson, Nikola Sprigg, Stan Heptinstall, Tardis Investigators
BACKGROUND: The TARDIS trial assessed the safety and efficacy of intensive versus guideline antiplatelet agents given for one month in patients with acute stroke or TIA. The aim of this substudy was to assess the effect of antiplatelet agents taken at baseline on platelet function reactivity and activation. METHODS: Platelet function, assessed by remotely measured surface expression of P-selectin, was assessed in patients at their time of randomisation. Data are median fluorescence values...
2017: Stroke Research and Treatment
https://www.readbyqxmd.com/read/28630277/t-cell-intracellular-antigens-and-hu-antigen-r-antagonistically-modulate-mitochondrial-activity-and-dynamics-by-regulating-optic-atrophy-1-gene-expression
#4
Isabel Carrascoso, José Alcalde, Carmen Sánchez-Jiménez, Paloma González-Sánchez, José M Izquierdo
Mitochondria undergo frequent morphological changes to control their function. We show here that T-cell intracellular antigens (TIA1b/TIARb) and Hu antigen R (HuR) have antagonistic roles in mitochondrial function by modulating the expression of mitochondrial shaping proteins. Expression of TIA1b/TIARb alters the mitochondrial dynamic network by enhancing fission and clustering, which is accompanied by a decrease in respiration. By contrast, HuR expression promotes fusion and cristae remodeling and increases respiratory activity...
June 19, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28629120/metabolomics-characterization-of-two-apocynaceae-plants-catharanthus-roseus-and-vinca-minor-using-gc-ms-and-lc-ms-methods-in-combination
#5
Qi Chen, Xueyan Lu, Xiaorui Guo, Qingxi Guo, Dewen Li
Catharanthus roseus (C. roseus) and Vinca minor (V. minor) are two common important medical plants belonging to the family Apocynaceae. In this study, we used non-targeted GC-MS and targeted LC-MS metabolomics to dissect the metabolic profile of two plants with comparable phenotypic and metabolic differences. A total of 58 significantly different metabolites were present in different quantities according to PCA and PLS-DA score plots of the GC-MS analysis. The 58 identified compounds comprised 16 sugars, eight amino acids, nine alcohols and 18 organic acids...
June 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28628053/heart-rate-and-blood-pressure-responses-to-gear-weight-under-a-controlled-workload
#6
Cassandra C Derella, Kristin R Aichele, Joyann E Oakman, Christina M Cromwell, Jessica A Hill, Lauren N Chavis, Avery N Perez, Allyson K Getty, Tia R Wisdo, Deborah L Feairheller
OBJECTIVE: To compare the effects of personal protective equipment (PPE) weight on blood pressure (BP) and heart rate (HR), between volunteer firefighters (FF) and athletes. METHODS: Athletes and FF were matched by body size and came to the lab twice for two treadmill tests. The "Regular" test was completed in normal fitness clothing, and PPE test was completed in full structural PPE with monitoring of HR assessment every minute and BP each stage. RESULTS: In the FF cohort, all submaximal HR and BP levels were different...
April 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28627932/short-term-prognostic-effect-of-prior-cerebrovascular-and-peripheral-artery-disease-in-patients-with-acute-coronary-syndrome-can-we-do-better
#7
Filipa Cordeiro, Pedro S Mateus, Alberto Ferreira, Silvia Leao, Miguel Moz, J Ilidio Moreira
BACKGROUND: We sought to evaluate the impact of prior cerebrovascular and/or peripheral arterial disease (PAD) on in-hospital outcomes in patients with acute coronary syndromes. METHODS: From 1 October 2010 to 26 February 2016, 13,904 acute coronary syndrome patients were enrolled in a national multicentre registry. They were divided into four groups: prior stroke/transient ischaemic attack (stroke/TIA); prior PAD; prior stroke/TIA and PAD; none. The endpoints included in-hospital mortality and a composite endpoint of death, re-infarction and stroke during hospitalization...
June 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28627728/can-atrophic-erosive-oral-lichen-planus-promote-cardiovascular-diseases-a-population-based-study
#8
Davide Conrotto, Roberta Barattero, Mario Carbone, Alessio Gambino, Veronica Sciannameo, Fulvio Ricceri, Federico Conrotto, Roberto Broccoletti, Paolo G Arduino
OBJECTIVES: Lichen planus has been recently associated with an increased risk of cardiovascular diseases (CVDs). The oral manifestations can be divided into white hyperkeratotic lesions (WL) and atrophic erosive lesions (RL). The aim of this report was to compare the presence of CVDs between patients affected by WL or RL, to test the hypothesis that RL are associated with an increased incidence of CVDs. SUBJECTS AND METHODS: Patients were analysed through a complete collection of all the risk factors for CVDs...
June 19, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28626951/considering-the-unintentional-consequences-of-pollinator-gardens-for-urban-native-plants-is-the-road-to-extinction-paved-with-good-intentions
#9
Anna L Johnson, Andrea M Fetters, Tia-Lynn Ashman
Urban centers are important foci for plant biodiversity and yet widespread planting of wildflower gardens in cities to sustain pollinator biodiversity is on the rise, without full consideration of potential ecological consequences. The impact of intentional wildflower plantings on remnant native plant diversity in urban and peri-urban settings has not received attention, although shared pollinators are likely to mediate several types of biotic interactions between human-introduced plants and remnant native ones...
June 19, 2017: New Phytologist
https://www.readbyqxmd.com/read/28626054/prediction-of-recurrent-stroke-or-transient-ischemic-attack-after-noncardiogenic-posterior-circulation-ischemic-stroke
#10
Changqing Zhang, Yilong Wang, Xingquan Zhao, Liping Liu, ChunXue Wang, Yuehua Pu, Xinying Zou, Yuesong Pan, Ka Sing Wong, Yongjun Wang
BACKGROUND AND PURPOSE: Posterior circulation ischemic stroke (IS) is generally considered an illness with a poor prognosis. However, there are no effective rating scales to predict recurrent stroke following it. Therefore, our aim was to identify clinical or radiological measures that could assist in predicting recurrent cerebral ischemic episodes. METHODS: We prospectively enrolled 723 noncardiogenic posterior circulation IS patients with onset of symptoms <7 days...
June 16, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28625901/the-effect-of-aspirin-in-the-postoperative-management-of-adult-ischemic-moyamoya-disease
#11
Yahui Zhao, Qian Zhang, Dong Zhang, Yuanli Zhao
Aspirin has been implicated in the postoperative management of moyamoya disease (MMD) in order to avoid bypass failure and decrease the incidence of subsequent stroke. However, the effect of it has not been completely determined yet. In this study, we retrospectively reviewed data of 184 adult patients (197 hemispheres) presented with ischemic-onset moyamoya disease that had undergone direct or combined revascularization in our hospital, to clarify the effect of postoperative aspirin therapy in the management of moyamoya disease...
June 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28625380/factors-associated-with-non-vitamin-k-antagonist-oral-anticoagulants-for-stroke-prevention-in-patients-with-new-onset-atrial-fibrillation-results-from-the-outcomes-registry-for-better-informed-treatment-of-atrial-fibrillation-ii-orbit-af-ii
#12
Benjamin A Steinberg, Peter Shrader, Laine Thomas, Jack Ansell, Gregg C Fonarow, Bernard J Gersh, Elaine Hylek, Peter R Kowey, Kenneth W Mahaffey, Emily C O'Brien, Daniel E Singer, Eric D Peterson, Jonathan P Piccini
BACKGROUND: Several non-vitamin K antagonist oral anticoagulant (NOAC) alternatives to warfarin are available for stroke prevention in atrial fibrillation (AF). We aimed to describe the factors associated with selection of NOACs versus warfarin in patients with new onset AF. METHODS: The ORBIT-AF II study is a national, US, prospective, observational, cohort study of anticoagulation treatment in patients with AF receiving NOACs or warfarin in the United States from 2013 to 2016...
July 2017: American Heart Journal
https://www.readbyqxmd.com/read/28615987/stroke-rates-before-and-after-ablation-of-atrial-fibrillation-and-in-propensity-matched-controls-in-the-uk
#13
Julian We Jarman, Tina D Hunter, Wajid Hussain, Jamie L March, Tom Wong, Vias Markides
BACKGROUND: We sought to determine whether catheter ablation of atrial fibrillation (AF) is associated with reduced occurrence of ischemic cerebrovascular events. METHODS AND RESULTS: Using routinely collected hospital data, ablation patients were matched to two control cohorts via direct and propensity score matching. A total of 4,991 ablation patients were matched 1:1 to general AF controls with no ablation, and 5,407 ablation patients were similarly matched to controls who underwent cardioversion...
2017: Pragmatic and Observational Research
https://www.readbyqxmd.com/read/28615986/mortality-stroke-and-heart-failure-in-atrial-fibrillation-cohorts-after-ablation-versus-propensity-matched-cohorts
#14
Julian We Jarman, Tina D Hunter, Wajid Hussain, Jamie L March, Tom Wong, Vias Markides
BACKGROUND: We sought to determine from key clinical outcomes whether catheter ablation of atrial fibrillation (AF) is associated with increased survival. METHODS AND RESULTS: Using routinely collected hospital data, ablation patients were matched to two control cohorts using direct and propensity score methodology. Four thousand nine hundred ninety-one ablation patients were matched 1:1 with general AF controls without ablation. Five thousand four hundred seven ablation patients were similarly matched to controls who underwent cardioversion...
2017: Pragmatic and Observational Research
https://www.readbyqxmd.com/read/28615008/isolated-transient-vertigo-posterior-circulation-ischemia-or-benign-origin
#15
Tobias F Blasberg, Lea Wolf, Christian Henke, Matthias W Lorenz
BACKGROUND: Isolated transient vertigo can be the only symptom of posterior circulation ischemia. Thus, it is important to differentiate isolated vertigo of a cerebrovascular origin from that of more benign origins, as patients with cerebral ischemia have a much higher risk for future stroke than do those with 'peripheral' vertigo. The current study aims to identify risk factors for cerebrovascular origin of isolated transient vertigo, and for future cerebrovascular events. METHODS: From the files of 339 outpatients with isolated transient vertigo we extracted history, clinical and technical findings, diagnosis, and follow-up information on subsequent stroke or transient ischemic attack (TIA)...
June 14, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28614663/electrochemically-triggered-release-of-reagent-to-the-proximal-leaflet-of-a-microcavity-supported-lipid-bilayer
#16
Hajra Basit, Sean Maher, Robert J Forster, Tia E Keyes
A novel and versatile approach to electrichemically triggering the release of a reagent, β-Cyclodextrin (β-CD), selectively to the proximal leaflet of a supported lipid bilayer, is described. Selective delivery is achieved by creating a spanning lipid bilayer across a microcavity array and exploiting the irreversible redox disassembly of the host-guest complex formed between thiolated Ferrocene (Fc) and β-Cyclodextrin (β-CD) in the presence of chloride. Self-assembled monolayers of the Ferrocene-alkanethiols were formed regioselectively on the interior surface of highly ordered 2...
June 14, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28612910/percutaneous-left-atrial-appendage-occlusion-procedures-in-patients-with-heart-failure
#17
Magdalena Szymała, Witold Streb, Katarzyna Mitręga, Tomasz Podolecki, Grzegorz Mencel, Tomasz Kukulski, Zbigniew Kalarus
BACKGROUND: Atrial fibrillation (AF) is the most common supraventricular tachyarrhythmia. The percutaneous left atrial appendage occlusion (LAAO) may be considered for the stroke prophylaxis in patients with nonvalvular AF (NVAF), especially in contraindications for oral anticoagulants (OAC) or high risk of bleeding. The data about implantation, safety, efficacy and follow-up are limited. Moreover, there are no studies on patients with NVAF and heart failure with severe left ventricular systolic dysfunction (left ventricular ejection fraction - LVEF ≤ 35%)...
June 14, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28605654/the-impact-of-installing-an-mr-scanner-in-the-emergency-department-for-patients-presenting-with-acute-stroke-like-symptoms
#18
Stephanie E Honig, Lukasz S Babiarz, Evan L Honig, Saeedeh Mirbagheri, Victor Urrutia, David M Yousem
PURPOSE: We examined the impact of an MR scanner in the emergency department (ED) on ED length of stay (LOS), hospital (H) LOS, hospital admission rate, hospitalization costs, and ED re-presentation rate of patients presenting with stroke-like symptoms (SLS). We hypothesized that the ED MR would increase efficiency of patient care. METHODS: The number of MRIs performed in the ED vs. inpatient setting, EDLOS, HLOS, hospitalization charges, admission rate, discharge diagnoses, and 30-60-day ED re-presentation rates were determined for ED patients with SLS six months before (2011) and after (2012) ED MR installation...
May 26, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28603135/report-impact-of-drug-combination-of-clopidogrel-and-pantoprazole-in-the-prognosis-of-patients-with-transient-ischemic-attack
#19
Min Lu
The study aimed to investigate the impact of clopidogrel combined with proton pump inhibitors (PPI) pantoprazole treatment on the prognosis of patients with transient ischemic attack (TIA). A total of 478 cases of TIA patients treated with clopidogrel were randomly assigned half to clopidogrel combined with pantoprazole treatment and the control groups (clopidogrel treatment alone) from January 2012 to January 20l4. The platelet aggregation before and after treatment and cerebrovascular events incidence within 90 days were compared and analyzed...
January 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28600659/a-meta-analysis-of-clinical-outcome-of-intestinal-transplantation-in-patients-with-total-intestinal-aganglionosis
#20
Hiroki Nakamura, Davina Henderson, Prem Puri
AIM OF THE STUDY: Total intestinal aganglionosis (TIA) occurs in less than 1% of patients with Hirschsprung disease (HD), and TIA is the most severe form of HD. Survival has improved with the advent of parenteral nutrition and intestinal transplantation (ITx). The field of ITx has rapidly progressed in the last two decades and has now become an established treatment for patients with intestinal failure. The purpose of this meta-analysis was to determine the clinical outcome of ITx in patients with TIA...
June 9, 2017: Pediatric Surgery International
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