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https://www.readbyqxmd.com/read/28543415/the-anatomy-of-research-scandals
#1
Carl Elliott
For the past two years, I have taught a seminar on medical research scandals. The syllabus looks like a highlight reel of exploitation and abuse: children fed plutonium-laced breakfast cereal, prisoners dosed with the active ingredient in Agent Orange, mental patients given psychedelic drugs and massive electroconvulsive therapy before being sent into curare-induced paralysis and a coma. I designed the seminar to crush the idealism of future physicians by illuminating the dark patterns that research scandals typically follow...
May 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28517237/development-of-an-alginate-hydrogel-to-deliver-aqueous-bait-for-pest-ant-management
#2
Jia-Wei Tay, Mark S Hoddle, Ashok Mulchandani, Dong-Hwan Choe
BACKGROUND: Insecticide sprays used for ant control cause environmental contamination. Liquid bait is a safe and effective alternative, but it requires bait stations to dispense the toxicant. We developed a biodegradable hydrogel to deliver liquid bait obviating the need for bait stations. RESULTS: Alginate hydrogel beads with preferred rigidity and maximum hydration in 25% sucrose solution were engineered by optimizing a crosslinking process. The moisture content of the substrate on which the beads were placed and the relative atmospheric humidity significantly influenced water loss dynamics of the hydrated hydrogel beads...
May 18, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28506507/syndrome-surveillance-of-fentanyl-laced-heroin-outbreaks-utilization-of-ems-medical-examiner-and-poison-center-databases
#3
P Quincy Moore, Joseph Weber, Steven Cina, Steven Aks
OBJECTIVE: Describe surveillance data from three existing surveillance systems during an unexpected fentanyl outbreak in a large metropolitan area. METHODS: We performed a retrospective analysis of three data sets: Chicago Fire Department EMS, Cook County Medical Examiner, and Illinois Poison Center. Each included data from January 1, 2015 through December 31, 2015. EMS data included all EMS responses in Chicago, Illinois, for suspected opioid overdose in which naloxone was administered and EMS personnel documented other criteria indicative of opioid overdose...
May 8, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28500526/intermediate-filaments-supporting-cell-shape-and-growth-in-bacteria
#4
Gabriella H Kelemen
For years intermediate filaments (IF), belonging to the third class of filamentous cytoskeletal proteins alongside microtubules and actin filaments, were thought to be exclusive to metazoan cells. Structurally these eukaryote IFs are very well defined, consisting of globular head and tail domains, which flank the central rod-domain. This central domain is dominated by an α-helical secondary structure predisposed to form the characteristic coiled-coil, parallel homo-dimer. These elementary dimers can further associate, both laterally and longitudinally, generating a variety of filament-networks built from filaments in the range of 10 nm in diameter...
2017: Sub-cellular Biochemistry
https://www.readbyqxmd.com/read/28494796/a-malignant-solitary-fibrous-tumour-arising-from-the-first-lumbar-vertebra-and-mimicking-an-osteosarcoma-a-case-report
#5
Naoki Oike, Hiroyuki Kawashima, Akira Ogose, Tetsuo Hotta, Toru Hirano, Takashi Ariizumi, Tetsuro Yamagishi, Hajime Umezu, Shoichi Inagawa, Naoto Endo
BACKGROUND: A solitary fibrous tumour (SFT) is an unusual neoplasm typically found in soft tissues. Although SFTs can arise in the bones, they very rarely arise in the vertebral arch. Here, we describe a case of a SFT that arose in the vertebral arch of the first lumbar (L1) spinal vertebrae and mimicked osteosarcoma. CASE PRESENTATION: A 49-year-old woman presented with a 2-month history of lower back pain and a lumbar region mass. Magnetic resonance imaging demonstrated a heterogeneously enhanced mass in the L1 vertebral arch...
May 11, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28489750/performance-of-the-lace-index-to-identify-elderly-patients-at-high-risk-for-hospital-readmission-in-singapore
#6
Lian Leng Low, Nan Liu, Marcus Eng Hock Ong, Eileen Yining Ng, Andrew Fu Wah Ho, Julian Thumboo, Kheng Hock Lee
Unplanned readmissions may be avoided by accurate risk prediction and appropriate resources could be allocated to high risk patients. The Length of stay, Acuity of admission, Charlson comorbidity index, Emergency department visits in past six months (LACE) index was developed to predict hospital readmissions in Canada. In this study, we assessed the performance of the LACE index in a Singaporean cohort by identifying elderly patients at high risk of 30-day readmissions. We further investigated the use of additional risk factors in improving readmission prediction performance...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28484324/the-roles-of-impact-and-inertia-in-the-failure-of-a-shoelace-knot
#7
Christopher A Daily-Diamond, Christine E Gregg, Oliver M O'Reilly
The accidental untying of a shoelace while walking often occurs without warning. In this paper, we discuss the series of events that lead to a shoelace knot becoming untied. First, the repeated impact of the shoe on the floor during walking serves to loosen the knot. Then, the whipping motions of the free ends of the laces caused by the leg swing produce slipping of the laces. This leads to eventual runaway untangling of the knot. As demonstrated using slow-motion video footage and a series of experiments, the failure of the knot happens in a matter of seconds, often without warning, and is catastrophic...
April 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28453411/pooled-analysis-of-the-prognostic-and-predictive-effects-of-tp53-comutation-status-combined-with-kras-or-egfr-mutation-in-early-stage-resected-non-small-cell-lung-cancer-in-four-trials-of-adjuvant-chemotherapy
#8
Frances A Shepherd, Benjamin Lacas, Gwénaël Le Teuff, Pierre Hainaut, Pasi A Jänne, Jean-Pierre Pignon, Thierry Le Chevalier, Lesley Seymour, Jean-Yves Douillard, Stephen Graziano, Elizabeth Brambilla, Robert Pirker, Martin Filipits, Robert Kratzke, Jean-Charles Soria, Ming-Sound Tsao
Purpose Our previous work evaluated individual prognostic and predictive roles of TP53, KRAS, and EGFR in non-small-cell lung cancer (NSCLC). In this analysis, we explore the prognostic and predictive roles of TP53/KRAS and TP53/EGFR comutations in randomized trials of adjuvant chemotherapy versus observation. Patients and Methods Mutation analyses (wild-type [WT] and mutant) for TP53, KRAS, and EGFR were determined in blinded fashion in multiple laboratories. Primary and secondary end points of pooled analysis were overall survival and disease-free survival...
April 28, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28420258/lace-up-for-healthy-feet-the-impact-of-shoe-closure-on-plantar-stress-response
#9
Hadi Rahemi, David G Armstrong, Ana Enriquez, Joshua Owl, Talal K Talal, Bijan Najafi
OBJECTIVE: This study examined the impact of shoe closure on plantar thermal stress response (TSR), which is known to be a surrogate of shear stress and skin perfusion. It is aimed to explore potential impact of shoe closure on increasing risk factors associated with plantar ulcers in people with diabetic peripheral neuropathy (DPN). METHODS: Fifteen eligible subjects were enrolled. The left foot was used as a reference and fitted to a self-adjusted and habitual lace-tightening method by each subject...
April 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28409951/electron-number-based-phase-diagram-of-pr_-1-x-lace_-x-cuo_-4-%C3%AE-and-possible-absence-of-disparity-between-electron-and-hole-doped-cuprate-phase-diagrams
#10
Dongjoon Song, Garam Han, Wonshik Kyung, Jeongjin Seo, Soohyun Cho, Beom Seo Kim, Masashi Arita, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi, Y Yoshida, H Eisaki, Seung Ryong Park, C Kim
We performed annealing and angle resolved photoemission spectroscopy studies on electron-doped cuprate Pr_{1-x}LaCe_{x}CuO_{4-δ} (PLCCO). It is found that the optimal annealing condition is dependent on the Ce content x. The electron number (n) is estimated from the experimentally obtained Fermi surface volume for x=0.10, 0.15 and 0.18 samples. It clearly shows a significant and annealing dependent deviation from the nominal x. In addition, we observe that the pseudo-gap at hot spots is also closely correlated with n; the pseudogap gradually closes as n increases...
March 31, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28390405/fam-face-sg-a-score-for-risk-stratification-of-frequent-hospital-admitters
#11
Lian Leng Low, Nan Liu, Kheng Hock Lee, Marcus Eng Hock Ong, Sijia Wang, Xuan Jing, Julian Thumboo
BACKGROUND: An accurate risk stratification tool is critical in identifying patients who are at high risk of frequent hospital readmissions. While 30-day hospital readmissions have been widely studied, there is increasing interest in identifying potential high-cost users or frequent hospital admitters. In this study, we aimed to derive and validate a risk stratification tool to predict frequent hospital admitters. METHODS: We conducted a retrospective cohort study using the readily available clinical and administrative data from the electronic health records of a tertiary hospital in Singapore...
April 8, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/28389868/remodelling-of-lace-plant-leaves-antioxidants-and-ros-are-key-regulators-of-programmed-cell-death
#12
Adrian N Dauphinee, Jacob I Fletcher, Georgia L Denbigh, Christian R Lacroix, Arunika H L A N Gunawardena
Antioxidants and reactive oxygen species are integral for programmed cell death signaling during perforation formation in the lace plant ( Aponogeton madagascariensis ). The lace plant is an excellent model system for studying developmentally regulated programmed cell death (PCD). During early lace plant leaf development, PCD systematically deletes cells resulting in a perforated leaf morphology that is unique in planta. A distinct feature in young lace plant leaves is an abundance of anthocyanins, which have antioxidant properties...
April 7, 2017: Planta
https://www.readbyqxmd.com/read/28367375/the-hospital-score-and-lace-index-as-predictors-of-30-day-readmission-in-a-retrospective-study-at-a-university-affiliated-community-hospital
#13
Robert Robinson, Tamer Hudali
INTRODUCTION: Hospital readmissions are common, expensive, and a key target of the Medicare Value Based Purchasing (VBP) program. Validated risk assessment tools such as the HOSPITAL score and LACE index have been developed to identify patients at high risk of hospital readmission so they can be targeted for interventions aimed at reducing the rate of readmission. This study aims to evaluate the utility of HOSPITAL score and LACE index for predicting hospital readmission within 30 days in a moderate-sized university affiliated hospital in the midwestern United States...
2017: PeerJ
https://www.readbyqxmd.com/read/28350928/effect-of-total-laparoscopic-hysterectomy-vs-total-abdominal-hysterectomy-on-disease-free-survival-among-women-with-stage-i-endometrial-cancer-a-randomized-clinical-trial
#14
RANDOMIZED CONTROLLED TRIAL
Monika Janda, Val Gebski, Lucy C Davies, Peta Forder, Alison Brand, Russell Hogg, Thomas W Jobling, Russell Land, Tom Manolitsas, Marcelo Nascimento, Deborah Neesham, James L Nicklin, Martin K Oehler, Geoff Otton, Lewis Perrin, Stuart Salfinger, Ian Hammond, Yee Leung, Peter Sykes, Hextan Ngan, Andrea Garrett, Michael Laney, Tong Yow Ng, Karfai Tam, Karen Chan, C David Wrede, Selvan Pather, Bryony Simcock, Rhonda Farrell, Gregory Robertson, Graeme Walker, Nigel R Armfield, Nick Graves, Anthony J McCartney, Andreas Obermair
Importance: Standard treatment for endometrial cancer involves removal of the uterus, tubes, ovaries, and lymph nodes. Few randomized trials have compared disease-free survival outcomes for surgical approaches. Objective: To investigate whether total laparoscopic hysterectomy (TLH) is equivalent to total abdominal hysterectomy (TAH) in women with treatment-naive endometrial cancer. Design, Setting, and Participants: The Laparoscopic Approach to Cancer of the Endometrium (LACE) trial was a multinational, randomized equivalence trial conducted between October 7, 2005, and June 30, 2010, in which 27 surgeons from 20 tertiary gynecological cancer centers in Australia, New Zealand, and Hong Kong randomized 760 women with stage I endometrioid endometrial cancer to either TLH or TAH...
March 28, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28317167/semiparametric-methods-for-estimation-of-a-nonlinear-exposure-outcome-relationship-using-instrumental-variables-with-application-to-mendelian-randomization
#15
James R Staley, Stephen Burgess
Mendelian randomization, the use of genetic variants as instrumental variables (IV), can test for and estimate the causal effect of an exposure on an outcome. Most IV methods assume that the function relating the exposure to the expected value of the outcome (the exposure-outcome relationship) is linear. However, in practice, this assumption may not hold. Indeed, often the primary question of interest is to assess the shape of this relationship. We present two novel IV methods for investigating the shape of the exposure-outcome relationship: a fractional polynomial method and a piecewise linear method...
May 2017: Genetic Epidemiology
https://www.readbyqxmd.com/read/28303812/global-eradication-of-measles-are-we-poised
#16
REVIEW
Raghavendra D Kulkarni, G S Ajantha, Aithal R Kiran, K R Pravinchandra
Measles, a highly infectious viral disease is the next target for eradication following poliovirus. Decades of experience with highly effective vaccination has invigorated us to take on this virus. The task is not only Titanic but is laced with intricate issues. Recently, an outbreak of fever with rash occurred on a tertiary care teaching hospital campus and was confirmed serologically as measles outbreak by IgMELISA. Therefore, we searched the literature related to outbreaks, transmission of the measles virus, age groups involved, vaccination strategies, vaccination failure and epidemiological features of the disease and reviewed the possible reasons for such outbreaks and problems in the global eradication of the virus...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28274908/assessing-the-performance-of-a-modified-lace-index-lace-rt-to-predict-unplanned-readmission-after-discharge-in-a-community-teaching-hospital
#17
Christo El Morr, Liane Ginsburg, Seungree Nam, Susan Woollard
BACKGROUND: The LACE index was designed to predict early death or unplanned readmission after discharge from hospital to the community. However, implementing the LACE tool in real time in a teaching hospital required practical unavoidable modifications. OBJECTIVE: The purpose of this study was to validate the implementation of a modified LACE index (LACE-rt) and test its ability to predict readmission risk using data in a hospital setting. METHODS: Data from the Canadian Institute for Health Information's Discharge Abstract Database (DAD), the National Ambulatory Care Reporting System (NACRS), and the hospital electronic medical record for one large community hospital in Toronto, Canada, were used in this study...
March 8, 2017: Interactive Journal of Medical Research
https://www.readbyqxmd.com/read/28268113/fentanyl-laced-heroin-and-its-contribution-to-a-spike-in-heroin-overdose-in-miami-dade-county
#18
Alexander Diaz Bode, Mallika Singh, James Andrews, Girish D Kapur, Amado Alejandro Baez
No abstract text is available yet for this article.
February 28, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28257671/nonsurgical-management-of-midsubstance-achilles-tendinopathy
#19
REVIEW
Shane McClinton, Lace Luedke, Derek Clewley
Midsubstance Achilles tendinopathy is one of the most common lower leg conditions. Most patients can recover with nonsurgical treatment that focuses on tendon loading exercises and, when necessary, symptom modulating treatments such as topical, oral, or injected medication, ice, shoe inserts, manual therapy, stretching, taping, or low-level laser. If unresponsive to initial management, a small percentage of patients may consider shockwave or sclerosing treatment and possibly surgery.
April 2017: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/28235886/the-pearl-score-predicts-90-day-readmission-or-death-after-hospitalisation-for-acute-exacerbation-of-copd
#20
C Echevarria, J Steer, K Heslop-Marshall, S C Stenton, P M Hickey, R Hughes, M Wijesinghe, R N Harrison, N Steen, A J Simpson, G J Gibson, S C Bourke
BACKGROUND: One in three patients hospitalised due to acute exacerbation of COPD (AECOPD) is readmitted within 90 days. No tool has been developed specifically in this population to predict readmission or death. Clinicians are unable to identify patients at particular risk, yet resources to prevent readmission are allocated based on clinical judgement. METHODS: In participating hospitals, consecutive admissions of patients with AECOPD were identified by screening wards and reviewing coding records...
February 24, 2017: Thorax
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