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https://www.readbyqxmd.com/read/28529489/the-electrogenic-na-k-pump-is-a-key-determinant-of-repolarization-abnormality-susceptibility-in-human-ventricular-cardiomyocytes-a-population-based-simulation-study
#1
Oliver J Britton, Alfonso Bueno-Orovio, László Virág, András Varró, Blanca Rodriguez
Background: Cellular repolarization abnormalities occur unpredictably due to disease and drug effects, and can occur even in cardiomyocytes that exhibit normal action potentials (AP) under control conditions. Variability in ion channel densities may explain differences in this susceptibility to repolarization abnormalities. Here, we quantify the importance of key ionic mechanisms determining repolarization abnormalities following ionic block in human cardiomyocytes yielding normal APs under control conditions...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28525289/high-throughput-phenotyping-of-human-induced-pluripotent-stem-cell-derived-cardiomyocytes-and-neurons-using-electric-field-stimulation-and-high-speed-fluorescence-imaging
#2
Neil J Daily, Zhong-Wei Du, Tetsuro Wakatsuki
Electrophysiology of excitable cells, including muscle cells and neurons, has been measured by making direct contact with a single cell using a micropipette electrode. To increase the assay throughput, optical devices such as microscopes and microplate readers have been used to analyze electrophysiology of multiple cells. We have established a high-throughput (HTP) analysis of action potentials (APs) in highly enriched motor neurons and cardiomyocytes (CMs) that are differentiated from human induced pluripotent stem cells (iPSCs)...
May 19, 2017: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/28521513/astragalus-polysaccharides-attenuate-monocrotaline-induced-pulmonary-arterial-hypertension-in-rats
#3
Lin-Bo Yuan, Chun-Yan Hua, Sheng Gao, Ya-Ling Yin, Mao Dai, Han-Yan Meng, Piao-Piao Li, Zhong-Xin Yang, Qing-Hua Hu
Astragalus polysaccharides (APS) have been shown to possess a variety of biological activities including anti-oxidant and anti-inflammation functions in a number of diseases. However, their function in pulmonary arterial hypertension (PAH) is still unknown. Rats received APS (200[Formula: see text]mg/kg once two days) for 2 weeks after being injected with monocrotaline (MCT; 60[Formula: see text]mg/kg). The pulmonary hemodynamic index, right ventricular hypertrophy, and lung morphological features of the rat models were examined, as well as the NO/eNOS ratio of wet lung and dry lung weight and MPO...
May 18, 2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28521064/the-importance-of-investigating-abuser-characteristics-in-elder-emotional-psychological-abuse-results-from-adult-protective-services-data
#4
Pi-Ju Liu, Kendon J Conrad, Scott R Beach, Madelyn Iris, Lawrence B Schiamberg
Objectives: Elder emotional/psychological abuse is the infliction of mental anguish on older adults through verbal or non-verbal acts. Using indicators based on existing literature, theoretically important abuser characteristics and victim vulnerabilities were collected using the Elder Abuse Decision Support System (EADSS) to test a theory of emotional/psychological abuse. Method: Eight-hundred-and-ten alleged emotional/psychological abuse cases were investigated by caseworkers in six Illinois adult protective services (APS) agencies; 466 individuals endorsed at least one item on the Older Adult Psychological Abuse Measure (OAPAM)...
May 17, 2017: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28521060/diagnostic-and-prognostic-significance-of-dsm-5-attenuated-psychosis-syndrome-in-services-for-individuals-at-ultra-high-risk-for-psychosis
#5
Paolo Fusar-Poli, Andrea De Micheli, Marco Cappucciati, Grazia Rutigliano, Cathy Davies, Valentina Ramella-Cravaro, Dominic Oliver, Ilaria Bonoldi, Matteo Rocchetti, Lauren Gavaghan, Rashmi Patel, Philip McGuire
Background: The diagnostic and prognostic significance of the DSM-5-defined Attenuated Psychosis Syndrome (DSM-5-APS) in individuals undergoing an ultra high risk (UHR) clinical assessment for suspicion of psychosis risk is unknown. Methods: Prospective cohort study including all consecutive help-seeking individuals undergoing both a DSM-5-APS and a Comprehensive Assessment of At Risk Mental States (CAARMS 12/2006) assessment for psychosis risk at the Outreach and Support in South London (OASIS) UHR service (March 2013-April 2014)...
May 17, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28516871/diagnosis-of-catastrophic-anti-phospholipid-syndrome-in-a-patient-tested-negative-for-conventional-tests
#6
Fabrizio Conti, Roberta Priori, Cristiano Alessandri, Roberta Misasi, Antonella Capozzi, Monica Pendolino, Simona Truglia, Silvia Frisenda, Maurizio Sorice, Guido Valesini
Catastrophic antiphospholipid syndrome (CAPS) is a severe variant of APS, characterised by clinical evidence of multiple organ involvement developing over a very short period of time, histopathological evidence of multiple small vessel occlusions and laboratory confirmation of the presence of aPL (lupus anticoagulant and/or anticardiolipin antibodies and/or anti-Beta2-glcyoprotein I antibodies). Here we report a case of a 39-year-old woman patient who developed a CAPS which was negative to the conventional aPL but positive for aPL in thin layer chromatography immunostaining and vimentin/cardiolipin antibodies by ELISA test...
May 8, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28515823/lupus-negative-libman-sacks-endocarditis-complicated-by-catastrophic-antiphospholipid-syndrome
#7
Ghulam Murtaza, Joy Iskandar, Tara Humphrey, Sujeen Adhikari, Aneesh Kuruvilla
Libman-Sacks endocarditis is characterized by sterile and verrucous lesions that predominantly affect the aortic and mitral valves. In most cases, patients do not have significant valvular dysfunction. However, patients with significant valvular dysfunction may present with serious complications such as cardiac failure, arrhythmias, and thromboembolic events. Recently, association of Libman-Sacks endocarditis with antiphospholipid antibody syndrome (APS) has been made. APS is most commonly defined by venous and arterial thrombosis, recurrent pregnancy loss, and thrombocytopenia...
April 2017: Cardiology Research
https://www.readbyqxmd.com/read/28508933/genetic-variants-within-key-nodes-of-the-cascade-of-antipsychotic-mechanisms-effects-on-antipsychotic-response-and-schizophrenia-psychopathology-in-a-naturalistic-treatment-setting-in-two-independent-korean-and-italian-samples
#8
Marco Calabrò, Stefano Porcelli, Concetta Crisafulli, Sheng-Min Wang, Soo-Jung Lee, Changsu Han, Ashwin A Patkar, Prakash S Masand, Diego Albani, Ilaria Raimondi, Gianluigi Forloni, Sofia Bin, Alessandro Mattiaccio, Vilma Mantovani, Tae-Youn Jun, Chi-Un Pae, Alessandro Serretti
INTRODUCTION: Schizophrenia (SCZ) is one of the most disabling psychiatric disorders. Genetic factors play an important role in both SCZ liability and its treatment outcome. In the present paper, we investigated the effects of several single nucleotide polymorphisms (SNPs) within ten strong candidate genes involved with antipsychotics (APs) mechanisms of action. METHODS: Two independent samples were investigated in the present study. Totals of 176 SCZ subjects and 326 controls of Korean ancestry, and 83 SCZ subjects and 194 controls of Italian ancestry were recruited and genotyped...
May 16, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28508034/laminar-localization-and-projection-specific-properties-of-presubicular-neurons-targeting-the-lateral-mammillary-nucleus-thalamus-or-medial-entorhinal-cortex
#9
Li-Wen Huang, Jean Simonnet, Mérie Nassar, Louis Richevaux, Roxanne Lofredi, Desdemona Fricker
The presubiculum (PrS) is part of an interconnected network of distributed brain regions where individual neurons signal the animals heading direction. PrS sends axons to medial entorhinal cortex (MEC), it is reciprocally connected with anterior thalamic nuclei (ATNs), and it sends feedback projections to the lateral mammillary nucleus (LMN), involved in generating the head direction signal. The intrinsic properties of projecting neurons will influence the pathway-specific transmission of activity. Here, we used projection-specific labeling of presubicular neurons to identify MEC-, LMN-, and ATN-projecting neurons in mice...
March 2017: ENeuro
https://www.readbyqxmd.com/read/28504619/standard-area-diagrams-for-aiding-severity-estimation-scientometrics-pathosystems-and-methodological-trends-in-the-last-25-years
#10
Emerson Del Ponte, Sarah Jane Pethybridge, Clive Bock, Sami Jorge Michereff, Franklin Jackson Machado, Pierri Spolti
Standard area diagrams (SADs) have long been used as a tool to aid the estimation of plant disease severity, an essential variable in phytopathometry. Formal validation of SADs was not considered prior to the early 1990s, when considerable effort began to be invested developing SADs and assessing their value for improving accuracy of estimates of disease severity in many pathosystems. Peer-reviewed literature post-1990 was identified, selected and cataloged in bibliographic software for further scrutiny and extraction of scientometric, pathosystem- and methodological-related data...
May 15, 2017: Phytopathology
https://www.readbyqxmd.com/read/28498035/assessment-of-older-adults-satisfaction-with-adult-protective-services-investigation-and-assistance
#11
James G Booker, Mary Breaux, Sharon Abada, Jason Burnett
This study examined elder self-neglect client satisfaction with services provided by an Adult Protective Services (APS) program. A total of 77 community-dwelling older adults with APS-substantiated self-neglect responded to the standardized and widely used 8-item Client Satisfaction Questionnaire (CSQ-8). Approximately 75% of the participants reported being satisfied with the overall services. They felt that the services provided were responsive to their need(s) and helped them deal with their problem(s). Greater than 80% responded that they would refer a friend, utilize APS in the future if necessary and were at least satisfied with the amount of help received...
May 12, 2017: Journal of Elder Abuse & Neglect
https://www.readbyqxmd.com/read/28497840/risk-factors-of-atrial-fibrillation-recurrence-despite-successful-radiofrequency-ablation-of-accessory-pathway-at-11-years-of-follow-up
#12
Michał Orczykowski, Piotr Urbanek, Robert Bodalski, Paweł Derejko, Grzegorz Warmiński, Małgorzata Łodyga, Damian Łasocha, Łukasz Mazurkiewicz, Maciej Dąbrowski, Paweł Tyczyński, Joanna Zakrzewska-Koperska, Rafał Baranowski, Artur Oręziak, Maciej Sterliński, Maria Bilińska, Łukasz Szumowski
BACKGROUND: Previous reports on patients with radiofrequency catheter ablation (RFCA) of accessory pathway (AP) and atrial fibrillation (AF) include only short follow-up periods. The aim of this study was to analyse predictors of recurrence of AF in patients after successful RFCA of APs over long term follow-up periods. METHODS: Of the 1,007 patients who underwent non-pharmacological treatment of Aps ( between the years 1993-2008), data of 100 consecutive patients were retrospectively analyzed (75 men, mean age 43...
May 12, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28495469/clock-copying-predicts-mortality-in-adult-protective-services-clients
#13
Abigail E Talley, Jason E Schillerstrom, Donald R Royall
OBJECTIVE: The objective of this study was to determine if a clock copying task predicts 18-month mortality in an Adult Protective Services (APS) sample referred for a decision-making capacity assessment. METHODS: The authors performed a retrospective medical record review of clients (N = 233) referred by APS for a decision-making capacity assessment during a 3-year time period. Information extracted included demographic data and neuropsychological performance on a battery sensitive to executive function, visuospatial ability, depression, memory, and general cognition...
April 6, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28495013/the-acttion-aps-aapm-pain-taxonomy-aaapt-multidimensional-approach-to-classifying-acute-pain-conditions
#14
Michael L Kent, Patrick J Tighe, Inna Belfer, Timothy J Brennan, Stephen Bruehl, Chad M Brummett, Chester C Buckenmaier, Asokumar Buvanendran, Robert I Cohen, Paul Desjardins, David Edwards, Roger Fillingim, Jennifer Gewandter, Debra B Gordon, Robert W Hurley, Henrik Kehlet, John D Loeser, Sean Mackey, Samuel A McLean, Rosemary Polomano, Siamak Rahman, Srinivasa Raja, Michael Rowbotham, Santhanam Suresh, Bernard Schachtel, Kristin Schreiber, Mark Schumacher, Brett Stacey, Steven Stanos, Knox Todd, Dennis C Turk, Steven J Weisman, Christopher Wu, Daniel B Carr, Robert H Dworkin, Gregory Terman
OBJECTIVE: With the increasing societal awareness of the prevalence and impact of acute pain, there is a need to develop an acute pain classification system that both reflects contemporary mechanistic insights and helps guide future research and treatment. Existing classifications of acute pain conditions are limiting, with a predominant focus on the sensory experience (eg, pain intensity) and pharmacologic consumption. Consequently, there is a need to more broadly characterize and classify the multidimensional experience of acute pain...
May 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28494969/rate-dependent-role-of-ikur-in-human-atrial-repolarization-and-atrial-fibrillation-maintenance
#15
Martin Aguilar, Jianlin Feng, Edward Vigmond, Philippe Comtois, Stanley Nattel
The atrial-specific ultrarapid delayed rectifier K(+) current (IKur) inactivates slowly but completely at depolarized voltages. The consequences for IKur rate-dependence have not been analyzed in detail and currently available mathematical action-potential (AP) models do not take into account experimentally observed IKur inactivation dynamics. Here, we developed an updated formulation of IKur inactivation that accurately reproduces time-, voltage-, and frequency-dependent inactivation. We then modified the human atrial cardiomyocyte Courtemanche AP model to incorporate realistic IKur inactivation properties...
May 9, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28494269/medical-conditions-associated-with-recurrent-miscarriage-is-bmi-the-tip-of-the-iceberg
#16
Mushi J Matjila, Anne Hoffman, Zephne M van der Spuy
BACKGROUND: In contrast to sporadic miscarriage, recurrent miscarriage (RM) is a rare entity which affects 1% of couples attempting conception. It is distressing for couples and healthcare professionals as the aetiology is unclear with limited treatment options. Apart from anti-phospholipid syndrome (APS), the strength of associations between RM and commonly investigated endocrine, autoimmune, thrombophilic and uterine structural abnormalities remains uncertain and variable. OBJECTIVES: To assess the prevalence of commonly investigated medical conditions associated with RM...
May 3, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28492769/census-of-the-primary-health-care-structure-in-brazil-2012-potential-coverage-estimates
#17
Kátia Crestine Poças, Lúcia Rolim Santana de Freitas, Elisabeth Carmen Duarte
OBJECTIVE: to estimate and discuss selected indicators of Primary Health Care (PHC) structure in Brazil in 2012. METHODS: a descriptive ecological study was carried out using Primary Health Care Centre census data from the National Program for Access and Quality Improvement in Primary Care (PMAQ-AB); potential coverage indicators were estimated for infrastructure, health team composition and services available. RESULTS: the results revealed high coverage (≥70%) in Brazil for Community Health Agents (87...
April 2017: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/28488841/catastrophic-antiphospholipid-syndrome-an-update
#18
Gerard Espinosa, Ignasi Rodriguez-Pinto, Ricard Cervera
Catastrophic antiphospholipid syndrome (CAPS) is a rare variant that accounts for 1% of patients with APS. Despite its low frequency, the mortality-related is very high ranging from 50% of patients in the first series to 37% in the most recent data. The current knowledge of this potential devastating entity comes from the International Registry of patients with CAPS, named CAPS Registry. Small vessel thrombosis, laboratory features of microangiopathic haemolytic anemia, and development of multisystem involvement in a very short period of time are the main characteristics of this syndrome...
May 8, 2017: Panminerva Medica
https://www.readbyqxmd.com/read/28487940/astragalus-polysaccharide-ameliorates-h2o2-induced-human-umbilical-vein-endothelial-cell-injury
#19
Ronghui Han, Futian Tang, Meili Lu, Chonghua Xu, Jin Hu, Meng Mei, Hongxin Wang
Endothelial dysfunction caused by reactive oxygen species (ROS) has been implicated in numerous cardiovascular diseases. Astragalus polysaccharide (APS), an important bioactive component extracted from the Chinese herb Astragalus membranaceus, has been widely used for the treatment of cardiovascular disease. The present study aimed to investigate the effects of APS on hydrogen peroxide (H2O2)‑induced human umbilical vein endothelial cell (HUVEC) injury. Following treatment with 400 µM H2O2 for 24 h, cell viability was decreased and apoptosis was increased...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28483615/severe-mesenteric-ischemia-in-a-pregnant-woman-with-antiphospholipid-syndrome
#20
Andrea Padricelli, Anna Maria Giribono, Doriana Ferrara, Flavia Spalla, Umberto Bracale, Luca Del Guercio, Giuseppe Servillo, Carlo Ruotolo, Umberto Marcello Bracale
The antiphospholipid syndrome (APS), either primary or secondary form, is considered an autoimmune disease with presence of at least one clinical and one laboratory abnormalities as defined by The Sydney criteria. Clinical criteria include vascular thrombosis of venous, artery, small vessel in any organ and recurrent pregnancy pathologies. Mesenteric ischemia is a rare and threatening manifestation of APS. We herein report a case of 34-years old pregnant woman referred to our Emergency Room with thoracic and abdominal acute pain...
May 5, 2017: Annals of Vascular Surgery
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