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https://www.readbyqxmd.com/read/29118202/bayesian-optimal-adaptation-explains-age-related-human-sensorimotor-changes
#1
Faisal Karmali, Gregory T Whitman, Richard F Lewis
The brain uses information from different sensory systems to guide motor behavior, and aging is associated with a simultaneous decline in the quality of sensory information provided to the brain and a deterioration in motor control. Correlations between age-dependent decline in sensory anatomical structures and behavior have been demonstrated, and it has recently been suggested that a Bayesian framework could explain these relationships. Here we show that age-dependent changes in a human sensorimotor reflex, the vestibulo-ocular reflex, are explained by a Bayesian optimal adaptation in the brain occurring in response to death of motion-sensing hair cells...
November 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29116125/erratum-large-meta-analysis-of-genome-wide-association-studies-identifies-five-loci-for-lean-body-mass
#2
M Carola Zillikens, Serkalem Demissie, Yi-Hsiang Hsu, Laura M Yerges-Armstrong, Wen-Chi Chou, Lisette Stolk, Gregory Livshits, Linda Broer, Toby Johnson, Daniel L Koller, Zoltán Kutalik, Jian'an Luan, Ida Malkin, Janina S Ried, Albert V Smith, Gudmar Thorleifsson, Liesbeth Vandenput, Jing Hua Zhao, Weihua Zhang, Ali Aghdassi, Kristina Åkesson, Najaf Amin, Leslie J Baier, Inês Barroso, David A Bennett, Lars Bertram, Rainer Biffar, Murielle Bochud, Michael Boehnke, Ingrid B Borecki, Aron S Buchman, Liisa Byberg, Harry Campbell, Natalia Campos Obanda, Jane A Cauley, Peggy M Cawthon, Henna Cederberg, Zhao Chen, Nam H Cho, Hyung Jin Choi, Melina Claussnitzer, Francis Collins, Steven R Cummings, Philip L De Jager, Ilja Demuth, Rosalie A M Dhonukshe-Rutten, Luda Diatchenko, Gudny Eiriksdottir, Anke W Enneman, Mike Erdos, Johan G Eriksson, Joel Eriksson, Karol Estrada, Daniel S Evans, Mary F Feitosa, Mao Fu, Melissa Garcia, Christian Gieger, Thomas Girke, Nicole L Glazer, Harald Grallert, Jagvir Grewal, Bok-Ghee Han, Robert L Hanson, Caroline Hayward, Albert Hofman, Eric P Hoffman, Georg Homuth, Wen-Chi Hsueh, Monica J Hubal, Alan Hubbard, Kim M Huffman, Lise B Husted, Thomas Illig, Erik Ingelsson, Till Ittermann, John-Olov Jansson, Joanne M Jordan, Antti Jula, Magnus Karlsson, Kay-Tee Khaw, Tuomas O Kilpeläinen, Norman Klopp, Jacqueline S L Kloth, Heikki A Koistinen, William E Kraus, Stephen Kritchevsky, Teemu Kuulasmaa, Johanna Kuusisto, Markku Laakso, Jari Lahti, Thomas Lang, Bente L Langdahl, Lenore J Launer, Jong-Young Lee, Markus M Lerch, Joshua R Lewis, Lars Lind, Cecilia Lindgren, Yongmei Liu, Tian Liu, Youfang Liu, Östen Ljunggren, Mattias Lorentzon, Robert N Luben, William Maixner, Fiona E McGuigan, Carolina Medina-Gomez, Thomas Meitinger, Håkan Melhus, Dan Mellström, Simon Melov, Karl Michaëlsson, Braxton D Mitchell, Andrew P Morris, Leif Mosekilde, Anne Newman, Carrie M Nielson, Jeffrey R O'Connell, Ben A Oostra, Eric S Orwoll, Aarno Palotie, Stephen C J Parker, Munro Peacock, Markus Perola, Annette Peters, Ozren Polasek, Richard L Prince, Katri Räikkönen, Stuart H Ralston, Samuli Ripatti, John A Robbins, Jerome I Rotter, Igor Rudan, Veikko Salomaa, Suzanne Satterfield, Eric E Schadt, Sabine Schipf, Laura Scott, Joban Sehmi, Jian Shen, Chan Soo Shin, Gunnar Sigurdsson, Shad Smith, Nicole Soranzo, Alena Stančáková, Elisabeth Steinhagen-Thiessen, Elizabeth A Streeten, Unnur Styrkarsdottir, Karin M A Swart, Sian-Tsung Tan, Mark A Tarnopolsky, Patricia Thompson, Cynthia A Thomson, Unnur Thorsteinsdottir, Emmi Tikkanen, Gregory J Tranah, Jaakko Tuomilehto, Natasja M van Schoor, Arjun Verma, Peter Vollenweider, Henry Völzke, Jean Wactawski-Wende, Mark Walker, Michael N Weedon, Ryan Welch, H-Erich Wichmann, Elisabeth Widen, Frances M K Williams, James F Wilson, Nicole C Wright, Weijia Xie, Lei Yu, Yanhua Zhou, John C Chambers, Angela Döring, Cornelia M van Duijn, Michael J Econs, Vilmundur Gudnason, Jaspal S Kooner, Bruce M Psaty, Timothy D Spector, Kari Stefansson, Fernando Rivadeneira, André G Uitterlinden, Nicholas J Wareham, Vicky Ossowski, Dawn Waterworth, Ruth J F Loos, David Karasik, Tamara B Harris, Claes Ohlsson, Douglas P Kiel
A correction to this article has been published and is linked from the HTML version of this article.
November 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/29102562/prostaglandin-e2-increases-lentiviral-vector-transduction-efficiency-of-adult-human-hematopoietic-stem-and-progenitor-cells
#3
Garrett C Heffner, Melissa Bonner, Lauryn Christiansen, Francis J Pierciey, Dakota Campbell, Yegor Smurnyy, Wenliang Zhang, Amanda Hamel, Seema Shaw, Gretchen Lewis, Kendrick A Goss, Olivia Garijo, Bruce E Torbett, Holly Horton, Mitchell H Finer, Philip D Gregory, Gabor Veres
Gene therapy currently in development for hemoglobinopathies utilizes ex vivo lentiviral transduction of CD34(+) hematopoietic stem and progenitor cells (HSPCs). A small-molecule screen identified prostaglandin E2 (PGE2) as a positive mediator of lentiviral transduction of CD34(+) cells. Supplementation with PGE2 increased lentiviral vector (LVV) transduction of CD34(+) cells approximately 2-fold compared to control transduction methods with no effect on cell viability. Transduction efficiency was consistently increased in primary CD34(+) cells from multiple normal human donors and from patients with β-thalassemia or sickle cell disease...
October 5, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29100765/effect-of-transosseous-tunnels-on-patella-fracture-risk-after-medial-patellofemoral-ligament-reconstruction-a-cadaveric-study
#4
Nicholas A Bonazza, Gregory S Lewis, Eric Z Lukosius, Evan P Roush, Kevin P Black, Aman Dhawan
PURPOSE: To determine whether (1) tunnels that breach the anterior cortex of the patella result in increased fracture risk and (2) transosseous tunnels drilled across the patella significantly reduce the tensile force needed to fracture the patella. METHODS: Twenty-six fresh-frozen cadaveric human patellas were randomized to 1 of 3 groups: a control group with unmodified patellas, a group with 2 transverse tunnels (TT) that did not breach the anterior cortex, and a group with 2 TT that breached the anterior cortex of the patella (PA)...
October 31, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29080827/clinical-importance-of-non-participation-in-a-maximal-graded-exercise-test-on-risk-of-non-fatal-and-fatal-cardiovascular-events-and-all-cause-mortality-cardia-study
#5
Kelley Pettee Gabriel, Kara M Whitaker, Daniel Duprez, Barbara Sternfeld, Cora E Lewis, Steve Sidney, Gregory Knell, David R Jacobs
While poor performance during a maximal graded exercise test (GXT) predicts cardiovascular events and premature mortality, the potential clinical importance of non-participation in a GXT, either for medical or non-medical reasons, is currently unknown. Data are from 4086 and 3547 Coronary Artery Risk Development in Young Adults (CARDIA) participants who attended the Year 7 (ages 25-37years) and/or 20 exams (ages 38-50years), respectively, which included a GXT. Cox proportional hazard models were used to examine the effect of GXT disposition (at Year 7 and 20, separately) on risk of non-fatal and fatal cardiovascular events and all-cause mortality obtained through 28years of follow-up...
October 25, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/29023828/impact-of-surveillance-for-hepatocellular-carcinoma-on-survival-in-patients-with-compensated-cirrhosis
#6
Ju Dong Yang, Ajitha Mannalithara, Andrew J Piscitello, John B Kisiel, Gregory J Gores, Lewis R Roberts, W Ray Kim
Surveillance for hepatocellular carcinoma (HCC) has been recommended in patients with cirrhosis. In this work, we examine the extent to which the competing risk of hepatic decompensation influences the benefit of HCC surveillance, by investigating the impact of availability of liver transplantation (LTx) and rate of progression of hepatic decompensation on survival gain from HCC surveillance. A multistate Markov model was constructed simulating a cohort of 50-year old patients with compensated cirrhosis. The primary outcome of interest was all-cause and HCC-specific mortality...
October 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29021179/bayesian-and-likelihood-phylogenetic-reconstructions-of-morphological-traits-are-not-discordant-when-taking-uncertainty-into-consideration-a-comment-on-puttick-et%C3%A2-al
#7
Joseph W Brown, Caroline Parins-Fukuchi, Gregory W Stull, Oscar M Vargas, Stephen A Smith
Puttick et al. (2017 Proc. R. Soc. B284, 20162290 (doi:10.1098/rspb.2016.2290)) performed a simulation study to compare accuracy among methods of inferring phylogeny from discrete morphological characters. They report that a Bayesian implementation of the Mk model (Lewis 2001 Syst. Biol.50, 913-925 (doi:10.1080/106351501753462876)) was most accurate (but with low resolution), while a maximum-likelihood (ML) implementation of the same model was least accurate. They conclude by strongly advocating that Bayesian implementations of the Mk model should be the default method of analysis for such data...
October 11, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28993402/exercise-intolerance-in-hfpef-diagnosing-and-ranking-its-causes-using-personalized-o2-pathway-analysis
#8
Nicholas E Houstis, Aaron S Eisman, Paul P Pappagianopoulos, Luke Wooster, Cole S Bailey, Peter D Wagner, Gregory D Lewis
Background -Heart failure with preserved ejection fraction (HFpEF) is a common syndrome with a pressing shortage of therapies. Exercise intolerance is a cardinal symptom of HFpEF, yet its pathophysiology remains uncertain. Methods -We investigated the mechanism of exercise intolerance in each of 134 patients referred for cardiopulmonary exercise testing (CPET): 79 with HFpEF and 55 controls. We performed CPET with invasive monitoring to measure hemodynamics, blood gases, and gas exchange during exercise. We used these measurements to quantify 6 steps of oxygen transport and utilization (the "O2 pathway") in each HFpEF patient, identifying the defective steps that impair each one's exercise capacity (peak VO2)...
October 9, 2017: Circulation
https://www.readbyqxmd.com/read/28949893/moral-conflict-and-competing-duties-in-the-initiation-of-a-biomedical-hiv-prevention-trial-with-minor-adolescents
#9
Amelia S Knopf, Amy Lewis Gilbert, Gregory D Zimet, Bill G Kapogiannis, Sybil G Hosek, J Dennis Fortenberry, Mary A Ott
BACKGROUND: Biomedical HIV prevention research with minors is complicated by the requirement of parental consent, which may disclose sensitive information to parents. We examine the experience of principal investigators (PIs) and study personnel who faced this complex ethical issue in the first biomedical HIV prevention study that allowed minors to self-consent for enrollment. METHODS: We conducted in-depth interviews with PIs and study personnel from 13 medical trial sites in cities across the United States...
July 2017: AJOB Empirical Bioethics
https://www.readbyqxmd.com/read/28916639/small-rna-seq-during-acute-maximal-exercise-reveal-rnas-involved-in-vascular-inflammation-and-cardiometabolic-health
#10
Ravi Shah, Ashish S Yeri, Avash Das, Amanda Courtright-Lim, Olivia Ziegler, Ernest Gervino, Jeffrey Ocel, Pablo Quintero Pinzon, Luke Wooster, Cole Shields Bailey, Kahraman Tanriverdi, Lea Beaulieu, Jane E Freedman, Ionita Ghiran, Gregory D Lewis, Kendall Van Keuren-Jensen, Saumya Das
OBJECTIVE: Exercise improves cardiometabolic and vascular function, though mechanisms remain unclear. Our objective was to demonstrate the diversity of circulating extracellular RNA (ex-RNA) release during acute exercise in humans and its relevance to exercise-mediated benefits on vascular inflammation. Approach and Results: We performed plasma small RNA sequencing (RNA-seq) in 26 individuals undergoing symptom-limited maximal treadmill exercise, with replication of our top candidate miRNA in a separate cohort of 59 individuals undergoing bicycle ergometry...
September 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28806070/high-levels-of-daytime-molecular-chlorine-and-nitryl-chloride-at-a-rural-site-on-the-north-china-plain
#11
Xiaoxi Liu, Hang Qu, L Gregory Huey, Yuhang Wang, Steven Sjostedt, Limin Zeng, Keding Lu, Yusheng Wu, Min Hu, Min Shao, Tong Zhu, Yuanhang Zhang
Molecular chlorine (Cl2) and nitryl chloride (ClNO2) concentrations were measured using chemical ionization mass spectrometry at a rural site over the North China Plain during June 2014. High levels of daytime Cl2 up to ∼450 pptv were observed. The average diurnal Cl2 mixing ratios showed a maximum around noon at ∼100 pptv. ClNO2 exhibited a strong diurnal variation with early morning maxima reaching ppbv levels and afternoon minima sustained above 60 pptv. A moderate correlation (R(2) = 0.31) between Cl2 and sulfur dioxide was observed, perhaps indicating a role for power plant emissions in the generation of the observed chlorine...
August 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28791596/automated-respiratory-sinus-arrhythmia-measurement-demonstration-using-executive-function-assessment
#12
Meghan Hegarty-Craver, Kristin H Gilchrist, Cathi B Propper, Gregory F Lewis, Samuel J DeFilipp, Jennifer L Coffman, Michael T Willoughby
Respiratory sinus arrhythmia (RSA) is a quantitative metric that reflects autonomic nervous system regulation and provides a physiological marker of attentional engagement that supports cognitive and affective regulatory processes. RSA can be added to executive function (EF) assessments with minimal participant burden because of the commercial availability of lightweight, wearable electrocardiogram (ECG) sensors. However, the inclusion of RSA data in large data collection efforts has been hindered by the time-intensive processing of RSA...
August 8, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28771605/impact-of-prior-flavivirus-immunity-on-zika-virus-infection-in-rhesus-macaques
#13
Michael K McCracken, Gregory D Gromowski, Heather L Friberg, Xiaoxu Lin, Peter Abbink, Rafael De La Barrera, Kenneth H Eckles, Lindsey S Garver, Michael Boyd, David Jetton, Dan H Barouch, Matthew C Wise, Bridget S Lewis, Jeffrey R Currier, Kayvon Modjarrad, Mark Milazzo, Michelle Liu, Anna B Mullins, J Robert Putnak, Nelson L Michael, Richard G Jarman, Stephen J Thomas
Studies have demonstrated cross-reactivity of anti-dengue virus (DENV) antibodies in human sera against Zika virus (ZIKV), promoting increased ZIKV infection in vitro. However, the correlation between in vitro and in vivo findings is not well characterized. Thus, we evaluated the impact of heterotypic flavivirus immunity on ZIKV titers in biofluids of rhesus macaques. Animals previously infected (≥420 days) with DENV2, DENV4, or yellow fever virus were compared to flavivirus-naïve animals following infection with a Brazilian ZIKV strain...
August 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28770846/an-ultrahot-gas-giant-exoplanet-with-a-stratosphere
#14
Thomas M Evans, David K Sing, Tiffany Kataria, Jayesh Goyal, Nikolay Nikolov, Hannah R Wakeford, Drake Deming, Mark S Marley, David S Amundsen, Gilda E Ballester, Joanna K Barstow, Lotfi Ben-Jaffel, Vincent Bourrier, Lars A Buchhave, Ofer Cohen, David Ehrenreich, Antonio García Muñoz, Gregory W Henry, Heather Knutson, Panayotis Lavvas, Alain Lecavelier des Etangs, Nikole K Lewis, Mercedes López-Morales, Avi M Mandell, Jorge Sanz-Forcada, Pascal Tremblin, Roxana Lupu
Infrared radiation emitted from a planet contains information about the chemical composition and vertical temperature profile of its atmosphere. If upper layers are cooler than lower layers, molecular gases will produce absorption features in the planetary thermal spectrum. Conversely, if there is a stratosphere-where temperature increases with altitude-these molecular features will be observed in emission. It has been suggested that stratospheres could form in highly irradiated exoplanets, but the extent to which this occurs is unresolved both theoretically and observationally...
August 2, 2017: Nature
https://www.readbyqxmd.com/read/28741615/patient-and-disease-characteristics-associated-with-the-presence-of-diabetes-mellitus-in-adults-with-chronic-pancreatitis-in-the-united-states
#15
Melena D Bellin, David C Whitcomb, Judah Abberbock, Stuart Sherman, Bimaljit S Sandhu, Timothy B Gardner, Michelle A Anderson, Michele D Lewis, Samer Alkaade, Vikesh K Singh, John Baillie, Peter A Banks, Darwin Conwell, Gregory A Cote, Nalini M Guda, Thiruvengadam Muniraj, Gong Tang, Randall E Brand, Andres Gelrud, Stephen T Amann, Christopher E Forsmark, C Mel Wilcox, Adam Slivka, Dhiraj Yadav
OBJECTIVES: Diabetes mellitus (DM) is a common complication of chronic pancreatitis (CP). Past studies for DM risk factors in CP have been limited to single centers or highly focused on a single etiology such as alcoholic or hereditary disease. We studied risk factors for DM in a large population of patients with CP of all etiologies enrolled in the North American Pancreatitis 2 studies. METHODS: Participants (1,171) with CP (n=383 with DM, n=788 without DM) were enrolled prospectively from 26 participating centers...
September 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28724990/large-meta-analysis-of-genome-wide-association-studies-identifies-five-loci-for-lean-body-mass
#16
M Carola Zillikens, Serkalem Demissie, Yi-Hsiang Hsu, Laura M Yerges-Armstrong, Wen-Chi Chou, Lisette Stolk, Gregory Livshits, Linda Broer, Toby Johnson, Daniel L Koller, Zoltán Kutalik, Jian'an Luan, Ida Malkin, Janina S Ried, Albert V Smith, Gudmar Thorleifsson, Liesbeth Vandenput, Jing Hua Zhao, Weihua Zhang, Ali Aghdassi, Kristina Åkesson, Najaf Amin, Leslie J Baier, Inês Barroso, David A Bennett, Lars Bertram, Rainer Biffar, Murielle Bochud, Michael Boehnke, Ingrid B Borecki, Aron S Buchman, Liisa Byberg, Harry Campbell, Natalia Campos Obanda, Jane A Cauley, Peggy M Cawthon, Henna Cederberg, Zhao Chen, Nam H Cho, Hyung Jin Choi, Melina Claussnitzer, Francis Collins, Steven R Cummings, Philip L De Jager, Ilja Demuth, Rosalie A M Dhonukshe-Rutten, Luda Diatchenko, Gudny Eiriksdottir, Anke W Enneman, Mike Erdos, Johan G Eriksson, Joel Eriksson, Karol Estrada, Daniel S Evans, Mary F Feitosa, Mao Fu, Melissa Garcia, Christian Gieger, Thomas Girke, Nicole L Glazer, Harald Grallert, Jagvir Grewal, Bok-Ghee Han, Robert L Hanson, Caroline Hayward, Albert Hofman, Eric P Hoffman, Georg Homuth, Wen-Chi Hsueh, Monica J Hubal, Alan Hubbard, Kim M Huffman, Lise B Husted, Thomas Illig, Erik Ingelsson, Till Ittermann, John-Olov Jansson, Joanne M Jordan, Antti Jula, Magnus Karlsson, Kay-Tee Khaw, Tuomas O Kilpeläinen, Norman Klopp, Jacqueline S L Kloth, Heikki A Koistinen, William E Kraus, Stephen Kritchevsky, Teemu Kuulasmaa, Johanna Kuusisto, Markku Laakso, Jari Lahti, Thomas Lang, Bente L Langdahl, Lenore J Launer, Jong-Young Lee, Markus M Lerch, Joshua R Lewis, Lars Lind, Cecilia Lindgren, Yongmei Liu, Tian Liu, Youfang Liu, Östen Ljunggren, Mattias Lorentzon, Robert N Luben, William Maixner, Fiona E McGuigan, Carolina Medina-Gomez, Thomas Meitinger, Håkan Melhus, Dan Mellström, Simon Melov, Karl Michaëlsson, Braxton D Mitchell, Andrew P Morris, Leif Mosekilde, Anne Newman, Carrie M Nielson, Jeffrey R O'Connell, Ben A Oostra, Eric S Orwoll, Aarno Palotie, Stephen C J Parker, Munro Peacock, Markus Perola, Annette Peters, Ozren Polasek, Richard L Prince, Katri Räikkönen, Stuart H Ralston, Samuli Ripatti, John A Robbins, Jerome I Rotter, Igor Rudan, Veikko Salomaa, Suzanne Satterfield, Eric E Schadt, Sabine Schipf, Laura Scott, Joban Sehmi, Jian Shen, Chan Soo Shin, Gunnar Sigurdsson, Shad Smith, Nicole Soranzo, Alena Stančáková, Elisabeth Steinhagen-Thiessen, Elizabeth A Streeten, Unnur Styrkarsdottir, Karin M A Swart, Sian-Tsung Tan, Mark A Tarnopolsky, Patricia Thompson, Cynthia A Thomson, Unnur Thorsteinsdottir, Emmi Tikkanen, Gregory J Tranah, Jaakko Tuomilehto, Natasja M van Schoor, Arjun Verma, Peter Vollenweider, Henry Völzke, Jean Wactawski-Wende, Mark Walker, Michael N Weedon, Ryan Welch, H-Erich Wichmann, Elisabeth Widen, Frances M K Williams, James F Wilson, Nicole C Wright, Weijia Xie, Lei Yu, Yanhua Zhou, John C Chambers, Angela Döring, Cornelia M van Duijn, Michael J Econs, Vilmundur Gudnason, Jaspal S Kooner, Bruce M Psaty, Timothy D Spector, Kari Stefansson, Fernando Rivadeneira, André G Uitterlinden, Nicholas J Wareham, Vicky Ossowski, Dawn Waterworth, Ruth J F Loos, David Karasik, Tamara B Harris, Claes Ohlsson, Douglas P Kiel
Lean body mass, consisting mostly of skeletal muscle, is important for healthy aging. We performed a genome-wide association study for whole body (20 cohorts of European ancestry with n = 38,292) and appendicular (arms and legs) lean body mass (n = 28,330) measured using dual energy X-ray absorptiometry or bioelectrical impedance analysis, adjusted for sex, age, height, and fat mass. Twenty-one single-nucleotide polymorphisms were significantly associated with lean body mass either genome wide (p < 5 × 10(-8)) or suggestively genome wide (p < 2...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28688769/revisit-subsequent-hospitalization-recurrent-fall-and-death-within-6-months-after-a-fall-among-elderly-emergency-department-patients
#17
Jiraporn Sri-On, Gregory P Tirrell, Jonathan F Bean, Lewis A Lipsitz, Shan W Liu
STUDY OBJECTIVE: We seek to describe the risk during 6 months and specific risk factors for recurrent falls, emergency department (ED) revisits, subsequent hospitalizations, and death within 6 months after a fall-related ED presentation. METHODS: This was a secondary analysis of a retrospective cohort of elderly fall patients who presented to the ED from one urban teaching hospital. We included patients aged 65 years and older who had an ED fall visit in 2012. We examined the frequency and risk factors of adverse events (composite of recurrent falls, ED revisits, subsequent hospitalization, and death, selected a priori) at 6 months...
June 29, 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/28655337/long-term-cognitive-outcome-of-alzheimer-s-disease-and-dementia-with-lewy-bodies-dual-disease-is-worse
#18
Frédéric Blanc, Rachid Mahmoudi, Thérèse Jonveaux, Jean Galmiche, Gilles Chopard, Benjamin Cretin, Catherine Demuynck, Catherine Martin-Hunyadi, Nathalie Philippi, François Sellal, Jean-Marc Michel, Gregory Tio, Melanie Stackfleth, Pierre Vandel, Eloi Magnin, Jean-Luc Novella, Georges Kaltenbach, Athanase Benetos, Erik A Sauleau
BACKGROUND: Longitudinal studies of dementia with Lewy bodies (DLB) are rare. Clinically, DLB is usually considered to worsen into Alzheimer's disease (AD). The aim of our study was to compare the rate of the cognitive decline in DLB, AD, and the association of the two diseases (AD + DLB). METHODS: Using the Regional Network for Diagnostic Aid and Management of Patients with Cognitive Impairment database, which includes all the patients seen at all memory clinics (medical consultation and day hospitals) in four French regions, and beta regression, we compared the longitudinal the Mini-Mental State Examination scores of 1159 patients with AD (n = 1000), DLB (n = 131) and AD + DLB (association of the two) (n = 28) during follow-up of at least 4 years...
June 27, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28636829/analysis-of-minimally-invasive-esophagectomy-at-a-single-veterans-affairs-medical-center
#19
Matthew D Skancke, Robert A Grossman, Gustavo Marino, Fredrick J Brody, Gregory D Trachiotis
BACKGROUND: To date, there are no published studies focusing on the benefits of minimally invasive esophagectomy (MIE) versus open esophagectomy at a Veterans Affairs Medical Center (VAMC). Our primary outcome was the incidence of esophageal malignancy in the veteran population and the postoperative morbidity following traditional and MIE for malignancy. DESIGN: Retrospective analysis of the incidence of esophageal malignancy at a Veteran Integrated Service Network (VISN) 5 VAMC reported to the VAMC Esophageal Tumor Registry between 2003 and 2016 and outcomes of the veterans who received esophagectomy for malignancy...
August 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28625737/insights-into-the-conformations-and-dynamics-of-intrinsically-disordered-proteins-using-single-molecule-fluorescence
#20
REVIEW
Gregory-Neal Gomes, Claudiu C Gradinaru
Most proteins are not static structures, but many of them are found in a dynamic state, exchanging conformations on various time scales as a key aspect of their biological function. An entire spectrum of structural disorder exists in proteins and obtaining a satisfactory quantitative description of these states remains a challenge. Single-molecule fluorescence spectroscopy techniques are uniquely suited for this task, by measuring conformations without ensemble averaging and kinetics without interference from asynchronous processes...
June 16, 2017: Biochimica et Biophysica Acta
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