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https://www.readbyqxmd.com/read/28444941/automated-ultrasound-edge-tracking-software-comparable-to-established-semi-automated-reference-software-for-carotid-intima-media-thickness-analysis
#1
Ninette Shenouda, Nicole A Proudfoot, Katharine D Currie, Brian W Timmons, Maureen J MacDonald
Many commercial ultrasound systems are now including automated analysis packages for the determination of carotid intima-media thickness (cIMT); however, details regarding their algorithms and methodology are not published. Few studies have compared their accuracy and reliability with previously established automated software, and those that have were in asymptomatic adults. Therefore, this study compared cIMT measures from a fully automated ultrasound edge-tracking software (EchoPAC PC, Version 110.0.2; GE Medical Systems, Horten, Norway) to an established semi-automated reference software (Artery Measurement System (AMS) II, Version 1...
April 26, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28442460/workload-pressure-would-not-be-a-defence-against-clinical-negligence-barrister-warns
#2
Abi Rimmer
No abstract text is available yet for this article.
April 25, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28440552/review-article-delivering-precision-oncology-in-intermediate-stage-liver-cancer
#3
REVIEW
D J Pinato, J Howell, R Ramaswami, R Sharma
BACKGROUND: Intermediate-stage hepatocellular carcinoma (HCC), for which trans-arterial chemoembolization (TACE) constitutes the standard of care, is a patient subgroup with significant heterogeneity in clinical outcome. Sources of variation relate to differences in tumour burden, hepatic reserve, ethnicity and treatment modalities. Increasing research efforts have been dedicated to minimise the clinical diversity of this patient population and enhance optimal provision of treatment. AIM: To comprehensively review the diverse prognostic models that have been proposed to refine the prognostic prediction of patients with HCC undergoing TACE...
April 25, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28438317/a-novel-chromatographic-approach-to-distinguish-gram-positive-from-gram-negative-bacteria-using-exogenous-volatile-organic-compound-metabolites
#4
Susana Ramírez-Guízar, Hannah Sykes, John D Perry, Edward C Schwalbe, Stephen P Stanforth, Ma Cristina I Perez-Perez, John R Dean
This paper utilized L-alanine aminopeptidase activity as a useful approach to distinguish between Gram-negative and Gram-positive bacteria. This was done using two enzyme substrates, specifically 2-amino-N-phenylpropanamide and 2-amino-N-(4-methylphenyl)propanamide which liberated the volatile compounds aniline and p-toluidine, respectively. Two complementary analytical techniques have been used to identify and quantify the VOCs, specifically static headspace multicapillary column gas chromatography ion mobility spectrometry (SHS-MCC-GC-IMS) and headspace solid phase microextraction gas chromatography mass spectrometry (HS-SPME-GC-MS)...
April 12, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28437610/long-acting-release-formulation-of-exendin-4-based-on-biomimetic-mineralization-for-type-2-diabetes-therapy
#5
Wei Chen, Guohao Wang, Bryant C Yung, Gang Liu, Zhiyong Qian, Xiaoyuan Chen
Exendin-4 has been clinically exploited for treating type 2 diabetes, but the short circulation half-life and multiple daily injections limit its widespread application with respect to poor patient compliance, low efficacy, and high treatment cost. In this study, a potent long-acting release system based on biomimetic mineralization was constructed for biocompatible and sustained exendin-4 delivery. Similar to natural biomineralization, exendin-4 can be mineralized to form nano-sized mineral solids by means of the reaction between acidic amino acid residues and calcium ions in a supersaturated environment with negligible influence on peptide bioactivity...
April 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28434458/relationship-between-state-malpractice-environment-and-quality-of-health-care-in-the-united-states
#6
Karl Y Bilimoria, Jeanette W Chung, Christina A Minami, Min-Woong Sohn, Emily S Pavey, Jane L Holl, Michelle M Mello
BACKGROUND: One major intent of the medical malpractice system in the United States is to deter negligent care and to create incentives for delivering high-quality health care. A study was conducted to assess whether state-level measures of malpractice risk were associated with hospital quality and patient safety. METHODS: In an observational study of short-term, acute-care general hospitals in the United States that publicly reported in the Centers for Medicaid & Medicare Services Hospital Compare in 2011, hierarchical regression models were used to estimate associations between state-specific malpractice environment measures (rates of paid claims, average Medicare Malpractice Geographic Practice Cost Index [MGPCI], absence of tort reform laws, and a composite measure) and measures of hospital quality (processes of care, imaging utilization, 30-day mortality and readmission, Agency for Healthcare Research and Quality Patient Safety Indicators, and patient experience from the Hospital Consumer Assessment of Healthcare Providers and Systems [HCAHPS])...
May 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28426974/cell-borne-2d-nanomaterials-for-efficient-cancer-targeting-and-photothermal-therapy
#7
Zhibin Li, Jundong Shao, Qian Luo, Xue-Feng Yu, Hanhan Xie, Haidi Fu, Siying Tang, Huaiyu Wang, Guangli Han, Paul K Chu
Two of the challenges for clinical implementation of nano-therapeutic strategies are optimization of tumor targeting and clearance of the nanoagents in vivo. Herein, a cell-mediated therapy by transporting 2D Bi2Se3 nanosheets within macrophage vehicles is described. The Bi2Se3 nanosheets with excellent near-infrared photothermal performance exhibit high macrophage uptake and negligible cytotoxicity thus facilitating the fabrication of Bi2Se3-laden-macrophages. Compared with bare Bi2Se3, the Bi2Se3-laden-macrophages after intravenous injection show prolonged blood circulation and can overcome the hypoxia-associated drug delivery barrier to target the tumor efficiently and dramatically enhance the efficiency of photothermal cancer therapy...
April 17, 2017: Biomaterials
https://www.readbyqxmd.com/read/28424439/management-of-immediate-partial-bioresorbable-vascular-scaffold-stent-thrombosis
#8
Ziad Said Dahdouh, Bahaa M Fadel, Hani Al Sergani, Jehad Al Buraiki, Gilles Grollier
Bioresorbable vascular scaffold (BVS) stents have been proposed recently as an elegant technique for treatment of coronary artery disease. However, perspective that these "dissolvable" stents will replace conventional metallic stents in broad spectrum of clinical conditions and patient categories in the near future has been moderated by non-negligible incidence of stent thrombosis (ST). Mechanical factors, such as strut thickness and malapposition have been implicated in increased risk of BVS ST. Presently described is case of immediate partial BVS ST in a young male related to technical procedural problem, rather than mechanical problem...
March 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28422745/targeting-of-the-breast-cancer-microenvironment-with-a-potent-and-linkable-oxindole-based-antiangiogenic-small-molecule
#9
Orestis Argyros, Theodoros Karampelas, Aimilia Varela, Xenophon Asvos, Athanasios Papakyriakou, Adamantia Agalou, Dimitris Beis, Constantinos H Davos, Demosthenes Fokas, Constantin Tamvakopoulos
The clinical efficacy of antiangiogenic small molecules (e.g., sunitinib) in breast carcinoma has largely failed with substantial off-target toxicity. We rationally designed and evaluated preclinically a novel sunitinib analogue, SAP, with favourable pharmacological properties and the ability to be readily conjugated to a targeting peptide or antibody for active tumour targeting.SAP was evaluated in silico and in vitro in order to verify target engagement (e.g., VEGFR2). Pharmacokinetic and biodistribution parameters were determined in mice using LC-MS/MS...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421999/use-and-withdrawal-of-immunosuppressors-in-primary-sj%C3%A3-gren-s-syndrome
#10
Jiram Torres-Ruiz, David Faz-Muñoz, Nora Hernández-Díaz, Gabriela Hernandez-Molina
OBJECTIVES: To assess the use and causes of withdrawal of glucocorticoids and immunosuppressors among patients with primary Sjögren's syndrome (pSS) in the clinical setting. METHODS: We retrospectively reviewed the medical records of 155 pSS patients and registered demographics, glandular/extraglandular features, serological data, cumulative ESSDAI and SSDDI. A single rheumatologist attributed the indication and cause of withdrawal of glucocorticoids and immunosuppressors...
April 18, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28421634/vagus-nerve-stimulation-a-new-promising-therapeutic-tool-in-inflammatory-bowel-disease
#11
B Bonaz, V Sinniger, S Pellissier
Inflammatory bowel disease (IBD), that is Crohn's disease (CD) and ulcerative colitis, affects about 1.5 million persons in the USA and 2.2 million in Europe. The pathophysiology of IBD involves immunological, genetic and environmental factors. The treatment is medico-surgical but suspensive. Anti-TNFα agents have revolutionized the treatment of IBD but have side effects. In addition, a non-negligible percentage of patients with IBD stop or take episodically their treatment. Consequently, a nondrug therapy targeting TNFα through a physiological pathway, devoid of major side effects and with a good cost-effectiveness ratio, would be of interest...
April 18, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28420349/grey-literature-in-systematic-reviews-a-cross-sectional-study-of-the-contribution-of-non-english-reports-unpublished-studies-and-dissertations-to-the-results-of-meta-analyses-in-child-relevant-reviews
#12
Lisa Hartling, Robin Featherstone, Megan Nuspl, Kassi Shave, Donna M Dryden, Ben Vandermeer
BACKGROUND: Systematic reviews (SRs) are an important source of information about healthcare interventions. A key component of a well-conducted SR is a comprehensive literature search. There is limited evidence on the contribution of non-English reports, unpublished studies, and dissertations and their impact on results of meta-analyses. METHODS: Our sample included SRs from three Cochrane Review Groups: Acute Respiratory Infections (ARI), Infectious Diseases (ID), Developmental Psychosocial and Learning Problems (DPLP) (n = 129)...
April 19, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28420298/prevalence-of-metabolic-syndrome-in-hiv-infected-patients-naive-to-antiretroviral-therapy-or-receiving-a-first-line-treatment
#13
Leonardo Calza, Vincenzo Colangeli, Eleonora Magistrelli, Nicolo' Rossi, Elena Rosselli Del Turco, Linda Bussini, Marco Borderi, Pierluigi Viale
BACKGROUND: The combination antiretroviral therapy (cART) has dramatically improved the life expectancy of patients with HIV infection, but may lead to several long-term metabolic abnormalities. However, data about the frequency of metabolic syndrome (MS) in HIV-infected people vary considerably across different observational studies. METHODS: The prevalence of MS among HIV-infected patients was evaluated by a cross-sectional study conducted among subjects naive to cART or receiving the first antiretroviral regimen and referring to our Clinics from January 2015 to December 2015...
April 19, 2017: HIV Clinical Trials
https://www.readbyqxmd.com/read/28419185/a-new-automated-technology-for-cerebrospinal-fluid-cell-counts-comparison-of-accuracy-and-clinical-impact-of-glocyte-sysmex-xn-and-manual-methods
#14
Linda M Sandhaus, Christine A Dillman, Warren P Hinkle, Julie M MacKenzie, George Hong
Objectives: The purpose of the study was to compare the performance of GloCyte (Advanced Instruments, Norwood, MA), a new semiautomated instrument for cerebrospinal fluid cell counting, with the manual hemocytometer method and the automated Sysmex XN (Sysmex, Kobe, Japan) body fluid mode. The clinical impact of replacing the manual method with either automated method was determined. Methods: Fifty-seven samples from 38 patients were analyzed by all three methods...
April 13, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28416162/pharmacokinetics-of-buprenorphine-following-constant-rate-infusion-for-postoperative-analgesia-in-dogs-undergoing-ovariectomy
#15
Andrea Barbarossa, Julie Rambaldi, Massimo Giunti, Anna Zaghini, Marco Cunto, Daniele Zambelli, Simond Valgimigli, Francesco Santoro, Noemi Romagnoli
OBJECTIVE: To investigate the pharmacokinetics of buprenorphine and its main active metabolite, norbuprenorphine, after administration of an intravenous loading dose followed by constant rate infusion (CRI) in dogs. STUDY DESIGN: Prospective, clinical study. ANIMALS: A total of seven healthy dogs undergoing elective ovariectomy. METHODS: Buprenorphine was administered as a loading dose (intravenous bolus of 15 μg kg(-1)) followed by CRI (2...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28414815/isolation-of-human-explant-derived-cardiac-stem-cells-from-cryopreserved-heart-tissue
#16
Robyn Jackson, Seth Mount, Bin Ye, Audrey E Mayfield, Vincent Chan, Munir Boodhwani, Ross A Davies, Haissam Haddad, Darryl R Davis
The value of preserving high quality bio specimens for fundamental research is significant as linking cellular and molecular changes to clinical and epidemiological data has fueled many recent advances in medicine. Unfortunately, storage of traditional biospecimens is limited to fixed samples or isolated genetic material. Here, we report the effect of cryopreservation of routine myocardial biopsies on explant derived cardiac stem cell (EDC) culture outcomes. We demonstrate that immediate cryopreservation or delayed cryopreservation after suspension within cardioplegia for 12 hours did not alter EDC yields, proliferative capacity, antigenic phenotype or paracrine signature...
2017: PloS One
https://www.readbyqxmd.com/read/28412467/magnitude-and-direction-of-missing-confounders-had-different-consequences-on-treatment-effect-estimation-in-propensity-score-analysis
#17
Tri-Long Nguyen, Gary S Collins, Jessica Spence, Charles Fontaine, Jean-Pierre Daurès, P J Devereaux, Paul Landais, Yannick Le Manach
OBJECTIVE: Propensity score (PS) analysis allows an unbiased estimate of treatment effects, but assumes that all confounders are measured. We assessed the impact of omitting confounders from a PS analysis on clinical decision-making. STUDY DESIGN AND SETTING: We conducted Monte Carlo simulations on hypothetical observational studies based on virtual populations and on the population from a large randomized trial (CRASH-2). In both series of simulations, PS analysis was conducted with all confounders and with omitted confounders, which were defined to have different strengths of association with the outcome and treatment exposure...
April 12, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28411432/automated-in-line-mixing-system-for-large-scale-production-of-chitosan-based-polyplexes
#18
Ashkan Tavakoli Naeini, Ousamah Younoss Soliman, Mohamad Gabriel Alameh, Marc Lavertu, Michael D Buschmann
Chitosan (CS)-based polyplexes are efficient non-viral gene delivery systems that are most commonly prepared by manual mixing. However, manual mixing is not only poorly controlled but also restricted to relatively small preparation volumes, limiting clinical applications. In order to overcome these drawbacks and to produce clinical quantities of CS-based polyplexes, a fully automated in-line mixing platform was developed for production of large batches of small-size and homogeneous CS-based polyplexes. Operational conditions to produce small-sized homogeneous polyplexes were identified...
April 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28408176/using-the-nsqip-pancreatic-demonstration-project-to%C3%A2-derive-a-modified-fistula-risk-score-for-preoperative-risk-stratification-in-patients-undergoing-pancreaticoduodenectomy
#19
Olga Kantor, Mark S Talamonti, Henry A Pitt, Charles M Vollmer, Taylor S Riall, Bruce L Hall, Chi-Hsiung Wang, Marshall S Baker
BACKGROUND: The Fistula Risk Score (FRS) is a clinical tool developed from single-institutional data using primarily intraoperative factors to characterize the risk of clinically relevant pancreatic fistula (CR-POPF) after pancreaticoduodenectomy. We developed a modified FRS based on objective, nationally accrued data that is more readily determined before resection. STUDY DESIGN: The 2012 NSQIP Pancreatic Demonstration Project (PDP) was used to identify 1,731 pancreaticoduodenectomy resections over 14 months (2011 to 2012)...
March 9, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28407203/on-the-multiple-imputation-variance-estimator-for-control-based-and-delta-adjusted-pattern-mixture-models
#20
Yongqiang Tang
Control-based pattern mixture models (PMM) and delta-adjusted PMMs are commonly used as sensitivity analyses in clinical trials with non-ignorable dropout. These PMMs assume that the statistical behavior of outcomes varies by pattern in the experimental arm in the imputation procedure, but the imputed data are typically analyzed by a standard method such as the primary analysis model. In the multiple imputation (MI) inference, Rubin's variance estimator is generally biased when the imputation and analysis models are uncongenial...
April 13, 2017: Biometrics
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