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https://www.readbyqxmd.com/read/28715302/characterization-of-humeral-head-displacements-during-dynamic-glenohumeral-neuromuscular-control-exercises-using-quantitative-ultrasound-imaging-a-feasibility-study
#1
Guillaume Desroches, François Desmeules, Dany H Gagnon
The objectives of the present study were to test the feasibility of measuring humeral head displacements using quantitative ultrasound imaging during the performance of two different dynamic glenohumeral neuromuscular control exercises and to investigate the influence of these exercises on the acromiohumeral distance (AHD) and anterior-posterior distance (APD). Ten individuals who have no history of shoulder injury at the non-dominant shoulder completed three repetitions of an active humeral head lowering exercise and three repetitions of a posteriorisation exercise in a random order in a seated position...
June 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28708216/colonoscopy-in-automated-peritoneal-dialysis-patients-value-of-prophylactic-antibiotics-a-prospective-study-on-a-single-antibiotic
#2
Abdullah K Al-Hwiesh, Ibrahiem S Abdul-Rahman, Mohammad A Hussameldeen, Nadia Al-Audah, Abdalla Abdelrahman, Hala M Moaigel, Tamer El-Salamony, Abdul-Salam Noor, Aisha Al-Osail, Dalal Al-Sayel, Nourah Al-Dossari
OBJECTIVE: To evaluate the need for prophylactic antibiotics in automated peritoneal dialysis (APD) patients undergoing flexible colonoscopy. PATIENTS AND METHODS: A total of 93 patients on automated peritoneal dialysis (APD) undergoing diagnostic colonoscopy were enrolled in a prospective, randomized study. Patients were randomized into 2 age- and sex-matched groups; group A (46 patients) with intraperitoneal (IP) ceftazidime prior to colonoscopy and group B (47 patients) without prophylactic antibiotics...
July 5, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28701770/racial-and-social-disparities-in-the-access-to-automated-peritoneal-dialysis-results-of-a-national-pd-cohort
#3
Roberto Pecoits-Filho, Silvia Carreira Ribeiro, Adam Kirk, Helder Sebastião da Silva, Arthur Pille, Ricardo Sprenger Falavinha, Sandro Scolari Filho, Ana Elizabeth Figueiredo, Pasqual Barretti, Thyago Proença de Moraes
The prevalence of patients on automated peritoneal dialysis (APD) is increasing worldwide and may be guided by clinical characteristics, financial issues and patient option. Whether socioeconomic factors at the patient level may influence the decision for the initial peritoneal dialysis (PD) modality is unknown. This is a prospective cohort study. The primary outcome of interest was the probability to start PD on APD. The inclusion criteria were adult patients incident in PD. Exclusion criteria were missing data for either race or initial PD modality...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28701055/perspectives-of-dutch-health-professionals-regarding-auditory-processing-disorders-a-focus-group-study
#4
Karin Neijenhuis, Ellen de Wit, Margreet Luinge
OBJECTIVE: This study investigated the perspectives of professionals from the Dutch audiological centres on the definition and care pathways of children with suspected auditory processing disorders (susAPD). DESIGN: focus group interviews. STUDY SAMPLE: In total, 45 professionals from 6 disciplines, representing 22 different audiological centres and one ambulatory service, participated in five parallel focus group interviews. Participants had a variety of experience in diagnosing and advising children with suspected APD...
July 13, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28699733/diversity-of-alkylproline-moieties-in-pyrrolobenzodiazepines-arises-from-postcondensation-modifications-of-a-unified-building-block
#5
Zdenek Kamenik, Stanislav Kadlcik, Radek Gazak, Simon Vobruba, Lucie Palanova, Marek Kuzma, Jiri Janata
Anticancer pyrrolobenzodiazepines (PBDs) are one of several groups of natural products that contain unusual 4-alkyl-l-proline derivatives (APDs) in their structure. APD moieties of PBDs are characterized by high structural diversity achieved through unknown biosynthetic machinery. Based on LC-MS analysis of culture broths, feeding experiments, and protein assays, we show that APDs are not incorporated into PBDs in their final form as was previously hypothesized. Instead, a uniform building block, 4-propylidene-l-proline or 4-ethylidene-l-proline, enters the condensation reaction...
July 14, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28694347/menstrual-hygiene-management-among-bangladeshi-adolescent-schoolgirls-and-risk-factors-affecting-school-absence-results-from-a-cross-sectional-survey
#6
Mahbub-Ul Alam, Stephen P Luby, Amal K Halder, Khairul Islam, Aftab Opel, Abul K Shoab, Probir K Ghosh, Mahbubur Rahman, Therese Mahon, Leanne Unicomb
BACKGROUND: Many adolescent girls in low-income and middle-income countries lack appropriate facilities and support in school to manage menstruation. Little research has been conducted on how menstruation affects school absence. This study examines the association of menstrual hygiene management knowledge, facilities and practice with absence from school during menstruation among Bangladeshi schoolgirls. METHODS: We conducted a nationally representative, cross-sectional study in Bangladeshi schools from March to June 2013 among girls 11 to 17 years old who reached menarche...
July 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28681507/correlation-between-herg-channel-inhibition-and-action-potential-prolongation
#7
P Saxena, M P Hortigon-Vinagre, S Beyl, I Baburin, S Andranovits, S M Iqbal, A Costa, A P IJzerman, P Kügler, E Timin, G L Smith, S Hering
BACKGROUND AND PURPOSE: hERG (Kv11.1) channel inhibition is a widely accepted predictor of cardiac arrhythmia. hERG channel inhibition alone is often insufficient to predict pro-arrhythmic drug effects. This study used a library of dofetilide derivatives to investigate the relationship between standard measures of hERG current block in an expression system and changes in action potential duration (APD) in hiPSC-CMs. The interference from accompanying block of Cav1.2 and Nav1.5 channels was investigated along with an in-silico action potential (AP) model...
July 6, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28670976/a-novel-approach-to-assess-clinical-competence-of-postgraduate-year-1-surgery-residents
#8
Xin Qi, Lian Ding, Wei Zhai, Qiang Li, Yan Li, Haichao Li, Bing Wen
BACKGROUND: An increased demand for accountability and transparency in medicine have initiated a shift toward a more objective and standardized approach for postgraduate medical training. OBJECTIVE: To develop and evaluate an objective method to assess clinical competence of postgraduate year 1 surgery residents. DESIGN: Thirty-one postgraduate year 1 surgery residents, who had been trained in the Surgical School of Peking University First Hospital for one year, participated in an objective structured clinical examination as a final assessment of their clinical competence...
2017: Medical Education Online
https://www.readbyqxmd.com/read/28670758/congenital-long-qt-syndrome-and-torsade-de-pointes
#9
REVIEW
Nabil El-Sherif, Gioia Turitto, Mohamed Boutjdir
Since its initial description by Jervell and Lange-Nielsen in 1957, the congenital long QT syndrome (LQTS) has been the most investigated cardiac ion channelopathy. A prolonged QT interval in the surface electrocardiogram is the sine qua non of the LQTS and is a surrogate measure of the ventricular action potential duration (APD). Congenital as well as acquired alterations in certain cardiac ion channels can affect their currents in such a way as to increase the APD and hence the QT interval. The inhomogeneous lengthening of the APD across the ventricular wall results in dispersion of APD...
July 2, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28667968/fast-x-ray-detector-system-with-simultaneous-measurement-of-timing-and-energy-for-a-single-photon
#10
T Masuda, S Okubo, H Hara, T Hiraki, S Kitao, Y Miyamoto, K Okai, R Ozaki, N Sasao, M Seto, S Uetake, A Yamaguchi, Y Yoda, A Yoshimi, K Yoshimura
We developed a fast X-ray detector system for nuclear resonant scattering (NRS) experiments. Our system employs silicon avalanche photo-diode (Si-APD) as a fast X-ray sensor. The system is able to acquire both timing and energy of a single X-ray photon simultaneously in a high rate condition, 10(6) counts per second for one Si-APD. The performance of the system was investigated in SPring-8, a synchrotron radiation facility in Japan. Good time resolution of 120 ps (FWHM) was achieved with a slight tail distribution in the time spectrum by a level of 10(-9) at 1 ns apart from the peak...
June 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28666286/-musical-abilities-in-children-with-an-auditory-processing-disorder
#11
Evgenia Scheffner, Wilma Vorwerk, Ulrich Vorwerk
Objective Difficulties in solving musical tasks are observed in clinical practice in children with an auditory processing disorder (APD). There is a paucity of research on musical ability in children with an APD. Material and Methods To assess musical skills we had 15 children aged 6-11 years with the diagnosis of APD perform a test, and compared them to a control group of 15 children. Results APD children did significantly worse in pitch discrimination, reproduction of rhythm and singing. Correlations between language-based and musical skills in the APD-group were observed...
June 30, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28662005/camkii-activation-promotes-cardiac-electrical-remodeling-and-increases-the-susceptibility-to-arrhythmia-induction-in-high-fat-diet-fed-mice-with-hyperlipidemia-conditions
#12
Peng Zhong, Dajun Quan, Yan Huang, He Huang
BACKGROUND: Obesity/hyperlipidemia is closely related to both atrial and ventricular arrhythmias. CaMKII, a multifunctional serine/threonine kinase, has been involved in cardiac arrhythmias of different etiology. However, its role in obesity/hyperlipidemia-related cardiac arrhythmia is unexplored. The aim of the present study was to determine the involvement of CaMKII in the process. METHODS: Adult male APOE-/- mice were fed a high-fat diet (HFD), administrated with KN93 (10mg/kg/2d), a specific inhibitor of CaMKII...
July 4, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28661333/acidogenesis-and-two-phase-codigestion-of-fats-oils-and-greases-and-municipal-biosolids
#13
Ross Varin, John Novak, Charles Bott
  Acidogenic codigestion of fats, oils, and greases (FOG) was studied using suspended growth sludge digesters operated as batch fed reactors that were fed twice daily. The digesters were maintained at a 2-day retention time and at 37 °C to mimic the acid phase of an acid-gas digestion system. As FOG loading rates increased, volatile fatty acid (VFA) production was found to increase, although the percentage of VFA production compared to theoretical values decreased exponentially to just 20% at the highest loading rates...
November 1, 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28659594/spectral-proof-for-the-4-aminophenyl-disulfide-plasma-assisted-catalytic-reaction
#14
Lixin Xia, Shiwei Wu, Jing Wang, Caiqing Ma, Peng Song
4-Aminophenyl disulfide (APDS) forms on the surface of silver nanoparticles due to chemical adsorption and disulfide bond breakage. This leads to the formation of new silver chemical bonds to result in the new compound NH2-C6H6-S-Ag. This novel material produces enhanced Raman spectra under weak laser light irradiation. When irradiated a plasma-assisted catalytic coupling reaction of NH2-C6H6-S-Ag occurs leading to the formation of 4,4-dimercaptoazobenzene (DMAB). Raman spectroscopy was used to monitor this reaction process, showing clear spectral changes associated with each step after addition of Ag nanoparticles onto the APDS powder...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28655649/interregional-electro-mechanical-heterogeneity-in-the-rabbit-myocardium
#15
REVIEW
Franz F Dressler, Ilona Bodi, Marius Menza, Robin Moss, Heiko Bugger, Christoph Bode, Jan C Behrends, Gunnar Seemann, Katja E Odening
BACKGROUND: Increased electrical heterogeneity has been causatively linked to arrhythmic disorders, yet the knowledge about physiological heterogeneity remains incomplete. This study investigates regional electro-mechanical heterogeneities in rabbits, one of the key animal models for arrhythmic disorders. METHODS AND FINDINGS: 7 wild-type rabbits were examined by phase-contrast magnetic resonance imaging in vivo to assess cardiac wall movement velocities. Using a novel data-processing algorithm regional contraction-like profiles were calculated...
June 24, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28646979/inhibition-of-rapid-delayed-rectifier-potassium-current-ikr-by-ischemia-reperfusion-and-its-recovery-by-vitamin-e-in-ventricular-myocytes
#16
Yaoxu Chen, Chunxia Yin, Yingying Yang, Zhuo Fan, Jinling Shang, Wen Tan
Ischemia/reperfusion (I/R) induces prolongation of QT interval and action potential duration (APD), which is a major cardiac electrical disorder in patients with arrhythmias. However, the mechanism of QT interval prolongation induced by I/R remains unclear. In the present study, we hypothesized that the rapid component of delayed rectifier potassium (IKr) channel plays an important role in I/R-induced QT interval prolongation. We observed a marked attenuation of IKr and a significant prolongation of action potential duration (APD) in a simulated I/R system with sodium dithionite (Na2S2O4) in ventricular myocytes of guinea pigs...
July 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28646025/remodeling-of-repolarization-and-arrhythmia-susceptibility-in-a-myosin-binding-protein-c-knockout-mouse-model
#17
Amir Toib, Chen Zhang, Giulia Borghetti, Xiaoxiao Zhang, Markus Wallner, Yijun Yang, Constantine Troupes, Hajime Kubo, Thomas Sharp, Eric Feldsott, Remus M Berretta, Neil Zalavadia, Danielle Trappanese, Shavonn Harper, Polina Gross, Xiongwen Chen, Sadia Mohsin, Steven Houser
Hypertrophic cardiomyopathy (HCM) is one of the most common genetic cardiac diseases and amongst the leading causes of sudden cardiac death (SCD) in the young. The cellular mechanisms leading to SCD in HCM are not well known. Prolongation of the action potential duration (APD) is a common feature predisposing hypertrophied hearts to SCD. Previous studies have explored the roles of inward Na(+) and Ca(2+) in the development of HCM, but the role of repolarizing K(+) currents have not been defined. The objective of this study was to characterize the arrhythmogenic phenotype and cellular electrophysiological properties of mice with HCM, induced by Myosin Binding Protein C (MyBPC) Knockout (KO) and to test the hypothesis that remodeling of repolarizing K(+) currents cause APD prolongation in MyBPC KO myocytes...
June 23, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28644868/electrophysiological-alterations-in-a-murine-model-of-chronic-coxsackievirus-b3-myocarditis
#18
Sven Kaese, Robert Larbig, Matthias Rohrbeck, Gerrit Frommeyer, Dirk Dechering, Jan Olligs, Sabine Schönhofer-Merl, Rainer Wessely, Karin Klingel, Guiscard Seebohm, Lars Eckardt
INTRODUCTION: Coxsackievirus B3 (CVB3) is known to induce acute and chronic myocarditis. Most infections are clinically unapparent but some patients suffer from ventricular arrhythmias (VA) and sudden cardiac death (SCD). Studies showed that acute CVB3 infection may cause impaired function of cardiac ion channels, creating a proarrhythmic substrate. However, it is unknown whether low level CVB3+ expression in myocytes may cause altered cardiac electrophysiology leading to VA. METHODS: Cellular electrophysiology was used to analyze cellular action potentials (APs) and occurrence of afterdepolarizations from isolated cardiomyocytes of wildtype (WT) and transgenic CVB3ΔVP0 (CVB3+) mice...
2017: PloS One
https://www.readbyqxmd.com/read/28638698/atypical-antipsychotic-therapy-in-parkinson-s-disease-psychosis-a-retrospective-study
#19
Mei Yuan, Laura Sperry, Norika Malhado-Chang, Alexandra Duffy, Vicki Wheelock, Sarah Farias, Kevin O'Connor, John Olichney, Kiarash Shahlaie, Lin Zhang
OBJECTIVE: Parkinson's disease psychosis (PDP) is a frequent complication of idiopathic Parkinson's disease (iPD) with significant impact on quality of life and association with poorer outcomes. Atypical antipsychotic drugs (APDs) are often used for the treatment of PDP; however, their use is often complicated by adverse drug reactions (ADRs). In this study, we present patients with PDP who were treated with the most commonly used atypical antipsychotic agents and review their respective ADRs...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28633739/autoimmune-progesterone-dermatitis-presenting-as-fixed-drug-eruption-a-case-report
#20
Raya Mokhtari, Mozhdeh Sepaskhah, Fatemeh Sari Aslani, Ladan Dastgheib
Autoimmune progesterone dermatitis (APD) is a rare disorder characterized by periodic skin lesions that erupt during the luteal phase of the menstrual cycle. Clinical manifestations of APD is caused by an unusual allergy to progesterone and has a wide range of clinical manifestations from eczema and urticaria to angioedema and erythema multiforme. A 46-year-old woman described recurrent, round erythematous plaques on the lower lip, both forearms and buttocks. These skin eruptions waxed and waned for 10 months, reoccurring 3-4 days before menstruation...
June 15, 2017: Dermatology Online Journal
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