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https://www.readbyqxmd.com/read/29036259/autoimmune-progesterone-dermatitis-a-diagnosis-to-consider-in-a-patient-with-cyclical-cutaneous-eruptions
#1
Alexa B Steuer, Sharon Scherl, Robin Ashinoff
Autoimmune progesterone dermatitis (APD) is a cyclical cutaneous reaction to progesterone, with symptoms that typically begin 3-10 days before the onset of menstrual flow and end 1-2 days into menses. The symptoms vary in severity from barely visible to anaphylaxis, but most often include an eczematous eruption, erythema multiforme, urticaria, folliculitis, and angioedema. This is a rare disorder with only a handful of documented cases. The pathogenesis of this condition remains unknown and significant variations in the presentation and severity of symptoms complicates its diagnosis...
October 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29029980/sol-gel-derived-flexible-silica-aerogel-as-selective-adsorbent-for-water-decontamination-from-crude-oil
#2
A Abolghasemi Mahani, S Motahari, A Mohebbi
Oil spills are the most important threat to the sea ecosystem. The present study is an attempt to investigate the effects of sol-gel parameters on seawater decontamination from crude oil by use of flexible silica aerogel. To this goal, methyltrimethoxysilane (MTMS) based silica aerogels were prepared by two-step acid-base catalyzed sol-gel process, involving ambient pressure drying (APD) method. To investigate the effects of sol-gel parameters, the aerogels were prepared under two different acidic and basic pH values (i...
October 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29024613/remote-monitoring-of-automated-peritoneal-dialysis-patients-assessing-clinical-and-economic-value
#3
Dilip Makhija, Mark Dominik Alscher, Stefan Becker, Silvia D'Alonzo, Raj Mehrotra, Leslie Wong, Kim McLeod, Judy Danek, Mary Gellens, Todd Kudelka, James A Sloand, Suzanne Laplante
BACKGROUND: For chronic kidney disease patients who progress to end-stage renal disease, survival is dependent on renal replacement therapy in the form of kidney transplantation or chronic dialysis. Peritoneal dialysis (PD), which can be performed at home, is both more convenient and less costly than hemodialysis that requires three 4-h visits per week to the dialysis facility and complicated equipment. Remote therapy management (RTM), technologies that collect medical information and transmit it to healthcare providers for patient management, has the potential to improve the outcomes of patients receiving automated peritoneal dialysis (APD) at home...
October 12, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/29021676/-stealth-cranioplasty-a-novel-endeavor-for-symptomatic-adult-chiari-i-patients-with-syringomyelia-technical-note-appraisal-and-philosophical-considerations
#4
Asifur Rahman, Md Sumon Rana, Paawan Bahadur Bhandari, Dewan Shamsul Asif, Abu Naim Wakil Uddin, Abu Saleh Mohammad Abu Obaida, Md Atikur Rahman, Md Shamsul Alam
AIM AND OBJECTIVE: In this article, we describe a novel technique of reconstruction of posterior fossa by cranioplasty with use of preshaped titanium mesh following posterior fossa decompression (PFD) for Chiari malformation type I (CMI) with syringomyelia (SM) in symptomatic adults. MATERIALS AND METHODS: Eleven patients underwent limited PFD and expansive cranioplasty with preshaped titanium mesh, what we term as "Stealth Cranioplasty" (SCP), following arachnoid preserving duraplasty (APD) and hexagonal tenting of the duraplasty with the cranioplasty (HTDC) for the management of symptomatic adult CMI with SM...
July 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28992755/drug-mediated-shortening-of-action-potentials-in-lqts2-human-induced-pluripotent-stem-cell-derived-cardiomyocytes
#5
Gary Duncan, Karl Firth, Vinoj George, Minh Duc Hoang, Andrew Staniforth, Godfrey Smith, Chris Denning
Cardiomyocytes (CMs) derived from human induced pluripotent stem cells (hiPSCs) are now a well-established modality for modelling genetic disorders of the heart. This is especially so for long QT syndrome (LQTS), which is caused by perturbation of ion channel function, and can lead to fainting, malignant arrhythmias and sudden cardiac death. LQTS2 is caused by mutations in KCNH2, a gene whose protein product contributes to IKr (also known as HERG), which is the predominant repolarising potassium current in CMs...
October 9, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28989116/complex-restitution-behavior-and-reentry-in-a-cardiac-tissue-model-for-neonatal-mice
#6
Andreas Mayer, Philip Bittihn, Stefan Luther
Spatiotemporal dynamics in cardiac tissue emerging from the coupling of individual cardiomyocytes underlie the heart's normal rhythm as well as undesired and possibly life-threatening arrhythmias. While single cells and their transmembrane currents have been studied extensively, systematically investigating spatiotemporal dynamics is complicated by the nontrivial relationship between single-cell and emergent tissue properties. Mathematical models have been employed to bridge this gap and contribute to a deepened understanding of the onset, development, and termination of arrhythmias...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/28988673/predictive-value-of-cortical-transit-time-on-mag3-for-surgery-in-antenatally-detected-unilateral-hydronephrosis-caused-by-ureteropelvic-junction-stenosis
#7
Jun Nyung Lee, Jun-Koo Kang, Shin Young Jeong, So Mi Lee, Min Hyun Cho, Yun-Sok Ha, Hyun Tae Kim, Tae-Hwan Kim, Eun Sang Yoo, Tae Gyun Kwon, Sung Kwang Chung
BACKGROUND: In children with antenatally detected hydronephrosis caused by ureteropelvic junction (UPJ) stenosis, the main challenge is preserving renal function by identifying children who require early surgical intervention from those for whom watchful waiting may be appropriate because of the potential for spontaneous resolution without a significant loss of renal function. OBJECTIVE: To assess the impact of initial cortical transit time (CTT) on technetium-99m mercaptoacetyltriglycerine (MAG3) diuretic renogram on the need for surgery in children with antenatally detected unilateral hydronephrosis caused by UPJ stenosis...
September 19, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28987044/-application-of-brain-boy-universal-professional-in-preliminary-assessment-of-auditory-processing-disorder
#8
Joanna Rutkowska, Anna Łobaczuk-Sitnik, Bożena Kosztyła-Hojna
Increasing numbers of hearing pathology is auditory processing disorders. Auditory Processing Disorders (APD) are defined as difficulty in using auditory information to communicate and learn in the presence of normal peripheral hearing. It may be recognized as a problem with understanding of speech in noise and perception disorder of distorted speech. APD may accompany to articulation disorders, language problems and difficulties in reading and writing. The diagnosis of auditory processing disorders causes many difficulties primarily due to the lack of common testing procedures, precise criteria for qualification to the group of norm and pathology...
September 29, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28972668/wenxin-keli-diminishes-ca-2-overload-induced-by-hypoxia-reoxygenation-in-cardiomyocytes-through-inhibiting-inal-and-ical
#9
Antao Luo, Zhipei Liu, Zhenzhen Cao, Jie Hao, Lin Wu, Chen Fu, Mengliu Zeng, Wanzhen Jiang, Peihua Zhang, Buchang Zhao, Tao Zhao, Jing Zhao, Jihua Ma
BACKGROUND: An increase in the late sodium current (INaL ) causes intracellular Na(+) overload and subsequently intracellular Ca(2+) ([Ca(2+) ]i ) overload via the stimulated reverse Na(+) -Ca(2+) exchange (NCX). Wenxin Keli (WXKL) is an effective antiarrhythmic Chinese herb extract, but the underlying mechanisms are unclear. METHODS AND RESULTS: The INaL , NCX current (INCX ), L-type Ca(2+) current (ICaL ) and action potentials (APs) were recorded using the whole-cell patch-clamp technique in rabbit ventricular myocytes...
October 3, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28972011/effective-activated-pi3k%C3%AE-syndrome-targeted-therapy-with-the-pi3k%C3%AE-inhibitor-leniolisib
#10
V Koneti Rao, Sharon Webster, Virgil A S H Dalm, Anna Šedivá, P Martin van Hagen, Steven Holland, Sergio D Rosenzweig, Andreas D Christ, Birgitte Sloth, Maciej Cabanski, Aniket D Joshi, Stefan de Buck, Julie Doucet, Danilo Guerini, Christoph Kalis, Ilona Pylvaenaeinen, Nicolas Soldermann, Anuj Kashyap, Gulbu Uzel, Michael J Lenardo, Dhavalkumar D Patel, Carrie L Lucas, Christoph Burkhart
Pathogenic gain-of-function variants in the genes encoding PI3Kδ (phosphoinositide 3-kinase delta) lead to accumulation of transitional B cells and senescent T cells, lymphadenopathy and immune-deficiency (Activated PI3Kδ Syndrome, APDS). Knowing the genetic etiology of APDS afforded us the opportunity to explore PI3Kδ inhibition as a precision-medicine therapy. Here, we report in vitro and in vivo effects of inhibiting PI3Kδ in APDS. Treatment with leniolisib (CDZ173), a selective PI3Kδ inhibitor, caused a dose-dependent suppression of PI3Kδ pathway hyperactivation (measured as phosphorylation of AKT/S6) in cell lines ectopically expressing APDS-causative p110δ variants and in T cell blasts derived from patients...
September 29, 2017: Blood
https://www.readbyqxmd.com/read/28971840/selective-inhibition-of-physiological-late-sodium-current-stabilizes-ventricular-repolarization
#11
Nesrine El-Bizri, Cindy Hong Li, Gong-Xin Liu, Sridharan Rajamani, Luiz Belardinelli
BACKGROUND: The physiological role of cardiac late Na+ current (INa) has not been well described. In this study, we tested the hypothesis that selective inhibition of physiological late INa abbreviates the normal action potential duration (APD) and counteracts the prolongation of APD and arrhythmic activities caused by inhibition of delayed rectifier K+ current, IKr. METHODS: The effects of GS-458967 (GS967) on the physiological late INa and action potentials (APs) in rabbit isolated ventricular myocytes and on the monophasic APs (MAPs) and arrhythmias in rabbit isolated perfused hearts were determined...
September 29, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28971230/effects-of-2-bromoterguride-a-dopamine-d2-receptor-partial-agonist-on-cognitive-dysfunction-and-social-aversion-in-rats
#12
Emilia Tarland, Robert T Franke, Heidrun Fink, Heinz H Pertz, Jan Brosda
RATIONALE: 2-Bromoterguride, a dopamine D2 receptor partial agonist with antagonist properties at serotonin 5-HT2A receptors and α2C-adrenoceptors, meets the prerequisites of a putative atypical antipsychotic drug (APD). We recently showed that 2-bromoterguride is effective in tests of positive symptoms of schizophrenia in rats without inducing extrapyramidal side effects or metabolic changes. OBJECTIVE: In continuation of our recent work, we now investigated the effect of 2-bromoterguride on apomorphine and phencyclidine (PCP)-induced disruptions of prepulse inhibition (PPI) of the acoustic startle response, a measure of sensory gating...
October 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28970469/extrapyramidal-side-effects-of-antipsychotics-are-linked-to-their-association-kinetics-at-dopamine-d2-receptors
#13
David A Sykes, Holly Moore, Lisa Stott, Nicholas Holliday, Jonathan A Javitch, J Robert Lane, Steven J Charlton
Atypical antipsychotic drugs (APDs) have been hypothesized to show reduced extrapyramidal side effects (EPS) due to their rapid dissociation from the dopamine D2 receptor. However, support for this hypothesis is limited to a relatively small number of observations made across several decades and under different experimental conditions. Here we show that association rates, but not dissociation rates, correlate with EPS. We measured the kinetic binding properties of a series of typical and atypical APDs in a novel time-resolved fluorescence resonance energy transfer assay, and correlated these properties with their EPS and prolactin-elevating liabilities at therapeutic doses...
October 2, 2017: Nature Communications
https://www.readbyqxmd.com/read/28970366/experiences-of-living-with-assisted-peritoneal-dialysis-a-qualitative-study
#14
Ingrid Petersson, Annette Lennerling
BACKGROUND: People's experiences of living with assisted peritoneal dialysis (aPD) have not been studied previously. Assisted PD is successfully used as renal replacement therapy for elderly and disabled patients with end-stage renal disease. To be treated with aPD implies being dependent on lifelong treatment at home. The aim of this study was to explore adults' experiences of living with aPD. METHODS: In-depth interviews were conducted with 10 participants with aPD, median age 82...
September 28, 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28970363/comparison-of-change-in-peritoneal-function-in-patients-on-continuous-ambulatory-pd-vs-automated-pd
#15
Nasreen Samad, Stanley Fan
BACKGROUND: Patients on automated peritoneal dialysis (APD) may have greater exposure to glucose in the PD fluid than those on continuous ambulatory PD (CAPD). If this causes long-term damage to the peritoneal membrane, it will have implications for a patient's choice of modality. METHODS: Membrane function of long-term APD or CAPD patients was followed prospectively. The data were collected from electronic patient records in our unit from 2000 to 2014. The rate of change in membrane transport status (D/Pcr) and ultrafiltration (UF4) for each patient was calculated using the least square regression line equation...
September 28, 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28967576/associate-program-directors-in-surgery-a-select-group-of-surgical-educators
#16
Farin Amersi, Jennifer Choi, Afshin Molkara, Danny Takanishi, Karen Deveney, Areti Tillou
OBJECTIVE: The role of the Associate Program Director (APD) within surgical education is not clearly defined or regulated by the Accreditation Council for Graduate Medical Education, often leading to variations in the responsibilities among institutions. Required credentials are not specified and compensation and protected time are not regulated resulting in large discrepancies among institutions. APDs are brought into the fold of surgical education to parcel out the escalating responsibilities of program director (PD)...
September 26, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28964292/intelligibility-of-degraded-speech-and-the-relationship-between-symptoms-of-inattention-hyperactivity-impulsivity-and-language-impairment-in-children-with-suspected-auditory-processing-disorder
#17
Ansar Uddin Ahmmed
OBJECTIVES: To compare the sensitivity and specificity of Auditory Figure Ground sub-tests of the SCAN-3 battery, using signal to noise ratio (SNR) of +8 dB (AFG+8) and 0 dB (AFG0), in identifying auditory processing disorder (APD). A secondary objective was to evaluate any difference in auditory processing (AP) between children with symptoms of inattention versus combined sub-types of Attention Deficit Hyperactivity Disorder (ADHD). METHODS: Data from 201 children, aged 6 to 16 years (mean: 10 years 6 months, SD: 2 years 8 months), who were assessed for suspected APD were reviewed retrospectively...
October 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28964164/sensitivity-of-reentrant-driver-localization-to-electrophysiological-parameter-variability-in-image-based-computational-models-of-persistent-atrial-fibrillation-sustained-by-a-fibrotic-substrate
#18
Dongdong Deng, Michael J Murphy, Joe B Hakim, William H Franceschi, Sohail Zahid, Farhad Pashakhanloo, Natalia A Trayanova, Patrick M Boyle
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia, causing morbidity and mortality in millions worldwide. The atria of patients with persistent AF (PsAF) are characterized by the presence of extensive and distributed atrial fibrosis, which facilitates the formation of persistent reentrant drivers (RDs, i.e., spiral waves), which promote fibrillatory activity. Targeted catheter ablation of RD-harboring tissues has shown promise as a clinical treatment for PsAF, but the outcomes remain sub-par...
September 2017: Chaos
https://www.readbyqxmd.com/read/28964159/distinguishing-mechanisms-for-alternans-in-cardiac-cells-using-constant-diastolic-interval-pacing
#19
Elizabeth M Cherry
Alternans, a proarrhythmic dynamical state in which cardiac action potentials alternate between long and short durations despite a constant pacing period, traditionally has been explained at the cellular level using nonlinear dynamics principles under the assumption that the action potential duration (APD) is determined solely by the time elapsed since the end of the previous action potential, called the diastolic interval (DI). In this scenario, APDs at a steady state should be the same provided that the preceding DIs are the same...
September 2017: Chaos
https://www.readbyqxmd.com/read/28964144/constant-di-pacing-suppresses-cardiac-alternans-formation-in-numerical-cable-models
#20
S Zlochiver, C Johnson, E G Tolkacheva
Cardiac repolarization alternans describe the sequential alternation of the action potential duration (APD) and can develop during rapid pacing. In the ventricles, such alternans may rapidly turn into life risking arrhythmias under conditions of spatial heterogeneity. Thus, suppression of alternans by artificial pacing protocols, or alternans control, has been the subject of numerous theoretical, numerical, and experimental studies. Yet, previous attempts that were inspired by chaos control theories were successful only for a short spatial extent (<2 cm) from the pacing electrode...
September 2017: Chaos
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