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https://www.readbyqxmd.com/read/28717924/hypertrophic-cardiomyopathy-and-the-myosin-mesa-viewing-an-old-disease-in-a-new-light
#1
REVIEW
Darshan V Trivedi, Arjun S Adhikari, Saswata S Sarkar, Kathleen M Ruppel, James A Spudich
The sarcomere is an exquisitely designed apparatus that is capable of generating force, which in the case of the heart results in the pumping of blood throughout the body. At the molecular level, an ATP-dependent interaction of myosin with actin drives the contraction and force generation of the sarcomere. Over the past six decades, work on muscle has yielded tremendous insights into the workings of the sarcomeric system. We now stand on the cusp where the acquired knowledge of how the sarcomere contracts and how that contraction is regulated can be extended to an understanding of the molecular mechanisms of sarcomeric diseases, such as hypertrophic cardiomyopathy (HCM)...
July 17, 2017: Biophysical Reviews
https://www.readbyqxmd.com/read/28684917/effects-of-a-tailored-lifestyle-self-management-intervention-talent-study-on-weight-reduction-a-randomized-controlled-trial
#2
Dieter Melchart, Peter Löw, Erich Wühr, Victoria Kehl, Wolfgang Weidenhammer
OBJECTIVE: Overweight and obesity are globally increasing risk factors for diseases in the context of metabolic syndrome. A randomized controlled trial was conducted to investigate whether there are any existing differences between two lifestyle intervention strategies with respect to weight reduction after 1 year. SUBJECTS AND METHODS: A total of 166 subjects with a body mass index of 28-35 kg/m(2) were enrolled in this trial at seven study centers; 109 were randomly allocated to the intervention group (comprehensive lifestyle modification program: web-based Individual Health Management [IHM]) with 3-month reduction phase plus 9-month maintenance phase, and 57 were allocated to the control group (written information with advice for healthy food habits: usual care [UC])...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28680138/investigation-of-thermally-induced-degradation-in-ch3nh3pbi3-perovskite-solar-cells-using-in-situ-synchrotron-radiation-analysis
#3
Nam-Koo Kim, Young Hwan Min, Seokhwan Noh, Eunkyung Cho, Gitaeg Jeong, Minho Joo, Seh-Won Ahn, Jeong Soo Lee, Seongtak Kim, Kyuwook Ihm, Hyungju Ahn, Yoonmook Kang, Hae-Seok Lee, Donghwan Kim
In this study, we employ a combination of various in-situ surface analysis techniques to investigate the thermally induced degradation processes in MAPbI3 perovskite solar cells (PeSCs) as a function of temperature under air-free conditions (no moisture and oxygen). Through a comprehensive approach that combines in-situ grazing-incidence wide-angle X-ray diffraction (GIWAXD) and high-resolution X-ray photoelectron spectroscopy (HR-XPS) measurements, we confirm that the surface structure of MAPbI3 perovskite film changes to an intermediate phase and decomposes to CH3I, NH3, and PbI2 after both a short (20 min) exposure to heat stress at 100 °C and a long exposure (>1 hour) at 80 °C...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28658374/mortality-and-disability-from-tobacco-related-diseases-in-brazil-1990-to-2015
#4
Bruno Piassi de São José, Ricardo de Amorim Corrêa, Deborah Carvalho Malta, Valéria Maria de Azeredo Passos, Elisabeth Barboza França, Renato Azeredo Teixeira, Paulo Augusto Moreira Camargos
Introduction: The global tobacco epidemic has taken pandemic proportions, with about 1.3 billion users and 6 million annual deaths. This study aimed to analyze the trends in mortality from chronic obstructive pulmonary disease (COPD) and lung, lips, oral cavity, pharynx, and esophagus cancer in Brazil between 1990 and 2015. Methods: The study was made possible through a partnership between the Metrics and Health Assessment Institute (IHME), University of Washington, Ministry of Health and the GBD Brazil technical group, using estimates from the Global Disease Charge 2015 study...
May 2017: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/28654700/both-absolute-and-relative-quantification-of-urinary-mrna-are-useful-for-non-invasive-diagnosis-of-acute-kidney-allograft-rejection
#5
Jung-Woo Seo, Haena Moon, Se-Yun Kim, Ju-Young Moon, Kyung Hwan Jeong, Yu-Ho Lee, Yang-Gyun Kim, Tae-Won Lee, Chun-Gyoo Ihm, Chan-Duck Kim, Byung Ha Chung, Yeong Hoon Kim, Sang Ho Lee
Urinary mRNA analysis with three-gene set (18S rRNA, CD3ε, and IP-10) has been suggested as a non-invasive biomarker of acute rejection (AR) in kidney transplant recipients using quantitative real-time PCR (qPCR). Application of droplet digital PCR (ddPCR), which has been suggested to provide higher sensitivity, accuracy, and absolute quantification without standard curves, could be a useful method for the quantifying low concentration of urinary mRNA. We investigated the urinary expression of these three genes in Korean patients with kidney transplantation and also evaluated the usefulness of ddPCR...
2017: PloS One
https://www.readbyqxmd.com/read/28618508/similarity-law-for-widom-lines-and-coexistence-lines
#6
D T Banuti, M Raju, M Ihme
The coexistence line of a fluid separates liquid and gaseous states at subcritical pressures, ending at the critical point. Only recently, it became clear that the supercritical state space can likewise be divided into regions with liquidlike and gaslike properties, separated by an extension to the coexistence line. This crossover line is commonly referred to as the Widom line, and is characterized by large changes in density or enthalpy, manifesting as maxima in the thermodynamic response functions. Thus, a reliable representation of the coexistence line and the Widom line is important for sub- and supercritical applications that depend on an accurate prediction of fluid properties...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28615117/impact-of-copd-on-outcomes-in-hospitalized-patients-with-community-acquired-pneumonia-analysis-of-the-spanish-national-hospital-discharge-database-2004-2013
#7
Javier de Miguel-Díez, Ana López-de-Andrés, Valentín Hernández-Barrera, Isabel Jiménez-Trujillo, Manuel Méndez-Bailón, José M de Miguel-Yanes, Rodrigo Jiménez-García
AIM: To examine trends in incidence and outcomes of community-acquired pneumonia (CAP) hospitalizations among patients with or without COPD in Spain (2004-2013). METHODS: We used national hospital discharge data to select all hospital admissions for CAP. Incidence was calculated overall and according to the presence or absence of COPD. RESULTS: We identified 901,136 hospital admissions for CAP (32.25% with COPD). Incidence of hospitalizations of CAP increased significantly over time among patients with and without COPD, but it was higher among people with COPD for all years analyzed...
June 11, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28609479/the-impact-of-septicemia-occurring-during-hospitalization-for-renal-transplantation-procedures-on-outcomes-in-adults-in-united-states
#8
Veerajalandhar Allareddy, Sankeerth Rampa, Alexandre T Rotta, Veerasathpurush Allareddy
INTRODUCTION: Immediate success rates of renal transplantation (RT) procedures are generally very high. National estimates of the impact of post-operative complications, specifically, septicemia occurring during hospitalization for RT's on outcomes is unclear. We sought, to examine the prevalence of septicemia in patients having renal transplantation procedures and to quantify the impact of septicemia on in-hospital mortality (IHM), length of stay (LOS), and hospital charges (HC). MATERIALS AND METHODS: We performed a retrospective analysis of the Nationwide Inpatient Sample (NIS) for the years 2004 to 2010...
2017: PloS One
https://www.readbyqxmd.com/read/28606303/effects-of-myosin-variants-on-interacting-heads-motif-explain-distinct-hypertrophic-and-dilated-cardiomyopathy-phenotypes
#9
Lorenzo Alamo, James S Ware, Antonio Pinto, Richard E Gillilan, Jonathan G Seidman, Christine E Seidman, Raúl Padrón
Cardiac β-myosin variants cause hypertrophic (HCM) or dilated (DCM) cardiomyopathy by disrupting sarcomere contraction and relaxation. The locations of variants on isolated myosin head structures predict contractility effects but not the prominent relaxation and energetic deficits that characterize HCM. During relaxation, pairs of myosins form interacting-heads motif (IHM) structures that with other sarcomere proteins establish an energy-saving, super-relaxed (SRX) state. Using a human β-cardiac myosin IHM quasi-atomic model, we defined interactions sites between adjacent myosin heads and associated protein partners, and then analyzed rare variants from 6112 HCM and 1315 DCM patients and 33,370 ExAC controls...
June 13, 2017: ELife
https://www.readbyqxmd.com/read/28597872/flipped-learning-course-design-and-evaluation-through-student-self-assessment-in-a-predental-science-class
#10
Jungjoon Ihm, Hyoseon Choi, Sangho Roh
PURPOSE: This study explores how to design a flipped classroom for a predental science course and evaluate its course through student self-assessment in order to provide practical implications for flipped learning in an undergraduate level. METHODS: Second- and third-year predental students in the Seoul National University School of Dentistry enrolled in Biodiversity and Global Environment, a 15-week, three-credit course based on a flipped learning model. At the end of the course, the students were asked to rate their self-directed learning, attitude toward social media, discussion skills, learning readiness, and class satisfaction...
June 2017: Korean Journal of Medical Education
https://www.readbyqxmd.com/read/28596591/widom-lines-in-binary-mixtures-of-supercritical-fluids
#11
Muralikrishna Raju, Daniel T Banuti, Peter C Ma, Matthias Ihme
Recent experiments on pure fluids have identified distinct liquid-like and gas-like regimes even under supercritical conditions. The supercritical liquid-gas transition is marked by maxima in response functions that define a line emanating from the critical point, referred to as Widom line. However, the structure of analogous state transitions in mixtures of supercritical fluids has not been determined, and it is not clear whether a Widom line can be identified for binary mixtures. Here, we present first evidence for the existence of multiple Widom lines in binary mixtures from molecular dynamics simulations...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28572421/do-dental-students-personality-types-and-group-dynamics-affect-their-performance-in-problem-based-learning
#12
Jung-Joon Ihm, So-Youn An, Deog-Gyu Seo
The aim of this study was to determine whether the personality types of dental students and their group dynamics were linked to their problem-based learning (PBL) performance. The Myers-Briggs Type Indicator (MBTI) instrument was used with 263 dental students enrolled in Seoul National University School of Dentistry from 2011 to 2013; the students had participated in PBL in their first year. A four-session PBL setting was designed to analyze how individual personality types and the diversity of their small groups were associated with PBL performance...
June 2017: Journal of Dental Education
https://www.readbyqxmd.com/read/28544301/hospital-volume-and-perioperative-outcomes-for-radical-cystectomy-a-population-study
#13
Cristian Udovicich, Marlon Perera, Molla Huq, Lih-Ming Wong, Daniel Lenaghan
OBJECTIVES: To evaluate the association between hospital volume and perioperative outcomes of radical cystectomy (RC) using state population data for a contemporary Australian cohort. PATIENTS AND METHODS: Patients undergoing RC for urothelial malignancy in the state of Victoria, Australia between July 2003 and June 2014 were identified using the Victorian Admitted Episodes Dataset (VAED). Hospitals were divided into tertiles according to their caseload per year...
May 2017: BJU International
https://www.readbyqxmd.com/read/28541860/thoracic-trauma-in-the-oldest-of-the-old-an-analysis-of-the-nationwide-inpatient-sample
#14
Caleb J Mentzer, Nathaniel J Walsh, Asif Talukder, Zachary Klaassen, Ryan Leibrandt, Colville H Ferdinand, Keith F O'Malley
Thoracic trauma (TT) has the second highest mortality rate in the geriatric population. These injuries cause significant morbidity in elderly patients. Little has been done to describe the demographics and mortality of specific injuries in these patients. ICD-9 codes corresponding with thoracic trauma for patients aged >80 years were extracted from the Nationwide Inpatient Sample database from 2000 to 2010. Characteristics including gender, race, Charlson Comorbidity Index (CCI), length of stay (LOS), and in-hospital mortality (IHM) were analyzed...
May 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28535912/effect-of-induced-high-myopia-on-functional-mri-signal-changes
#15
Ali Mirzajani, Mohammad Ghorbani, Behrouz Rasuli, Ali Mahmoud-Pashazadeh
PURPOSE: The current study evaluated the effect of lens-induced high myopia (IHM) on the activity of the occipital visual cortex during two visual stimuli presentations to the subjects. This was done by measuring the Blood Oxygenation Level Dependent (BOLD) signal using functional MRI (fMRI). METHODS: BOLD contrast fMRI was performed with a 1.5T MRI scanner on 12 emmetropic subjects (refractive error <±0.25Diopter) with no history of neurologic disorder. IHM conditions were applied to subjects by three convex lenses of +5D, +7D and +10D...
May 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28533849/clinical-risk-factors-for-in-hospital-mortality-in-older-adults-with-hiv-infection-findings-from-a-south-african-hospital-administrative-dataset
#16
Kumeren Govender, Fatima Suleman, Yoshan Moodley
INTRODUCTION: The proportion of older South African adults (aged ≥50 years old) with HIV infection requiring hospitalization is likely to increase in the near future. Clinical risk factors for in-hospital mortality (IHM) in these patients are not well described. We aimed to identify clinical risk factors associated with IHM and their overall contribution towards IHM in older South African adults with HIV infection. METHODS: Clinical data for 690 older adults with HIV infection was obtained from the hospital administrative database at the Hlabisa Hospital in KwaZulu-Natal, South Africa...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28530480/ultrasonographic-and-histological-evaluation-of-the-effects-of-long-term-carotid-catheterization-on-cardiac-function-in-nmri-mice
#17
Anne C Teilmann, Morten B Thomsen, Elizabeth A Ihms, Nathan Pate, Jann Hau, Klas Abelson
Catheterization of laboratory mice is commonly performed in biomedical research to infuse substances and for blood sampling. One approach is to catheterize the right common carotid artery and advance the catheter until the tip is positioned in the aorta or the proximal brachiocephalic trunk. Owing to the small body size of the mouse, a catheter tends to occupy a great part of even the larger vessel lumens, and this may increase vascular resistance with potential pathophysiological impacts on the heart. The present study compared cardiac function of catheterized mice, with catheter tip placement in the brachiocephalic trunk, with sham-operated mice and non-operated control mice...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28522940/potential-urine-proteomics-biomarkers-for-primary-nephrotic-syndrome
#18
Young Wook Choi, Yang Gyun Kim, Min-Young Song, Ju-Young Moon, Kyung-Hwan Jeong, Tae-Won Lee, Chun-Gyoo Ihm, Kang-Sik Park, Sang-Ho Lee
BACKGROUND: Nephrotic syndrome (NS) is a nonspecific kidney disorder, commonly caused by minimal change disease (MCD), focal segmental glomerulosclerosis (FSGS), and membranous nephropathy (MN). Here we analyzed urinary protein profiles, aiming to discover disease-specific biomarkers of these three common diseases in NS. METHODS: Sixteen urine samples were collected from patients with biopsy-proven NS and healthy controls. After removal of high-abundance proteins, the urinary protein profile was analyzed by LC-MS/MS to generate a discovery set...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28506809/women-with-atrial-fibrillation-and-type-2-diabetes-have-a-higher-incidence-of-hospitalization-and-undergo-ablation-or-pacemaker-implantation-less-frequently-than-men
#19
Manuel Méndez-Bailón, Nuria Muñoz-Rivas, Rodrigo Jiménez-García, Valentín Hernández-Barrera, José Mª de Miguel-Yanes, Noel Lorenzo Villalba, Javier de Miguel Diez, Ana Lopez-de-Andrés
BACKGROUND: We reviewed trends from 2004 to 2013 in the incidence and outcomes for atrial fibrillation (AF) in Spanish patients with type 2 diabetes mellitus (T2DM) comparing women and men. METHODS: We used national hospital discharge data including all T2DM patients discharged from the hospital after AF. Patients with AF in the primary diagnosis field were selected. Discharges were grouped by sex. Incidence was calculated overall and stratified by sex. We analyzed diagnostic and therapeutic procedures, patient comorbidities, CHA2DS2-VASc score, length of hospital stay, readmission rates and in-hospital mortality (IHM)...
July 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28490722/response-to-comment-on-hypogonadotrophic-hypogonadism-due-to-a-mutation-in-the-luteinizing-hormone-%C3%AE-subunit-gene
#20
Sung-Hee Ihm
No abstract text is available yet for this article.
May 2017: Korean Journal of Internal Medicine
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