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https://www.readbyqxmd.com/read/28647418/comparison-of-stroke-prediction-accuracy-of-abcd2-and-abcd3-i-in-patients-with-transient-ischemic-attack-a-meta-analysis
#1
Meng Zhao, Shuo Wang, Dong Zhang, Yan Zhang, Xiaofeng Deng, Jizong Zhao
BACKGROUND: A direct comparison of the stroke prediction utility of the ABCD2 and ABCD3-I scores has not been performed. Thus, we conducted a diagnostic meta-analysis and applied the results to a hypothetical cohort of 1000 patients with transient ischemic attack (TIA) to assess the power of stroke prediction by ABCD2 and ABCD3-I scores. METHODS: Medline, PubMed, Embase, and manuscript references were searched to identify studies that directly compared the stroke predictive powers of ABCD2 and ABCD3-I scores...
June 21, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28643786/a-unified-model-of-hymenopteran-preadaptations-that-trigger-the-evolutionary-transition-to-eusociality
#2
Andrés E Quiñones, Ido Pen
Explaining the origin of eusociality, with strict division of labour between workers and reproductives, remains one of evolutionary biology's greatest challenges. Specific combinations of genetic, behavioural and demographic traits in Hymenoptera are thought to explain their relatively high frequency of eusociality, but quantitative models integrating such preadaptations are lacking. Here we use mathematical models to show that the joint evolution of helping behaviour and maternal sex ratio adjustment can synergistically trigger both a behavioural change from solitary to eusocial breeding, and a demographic change from a life cycle with two reproductive broods to a life cycle in which an unmated cohort of female workers precedes a final generation of dispersing reproductives...
June 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28643317/-effect-of-metformin-on-colorectal-carcinoma-in-type-2-diabetes-mellitus-patients-a-markov-model-analysis
#3
Tianhong Su, Bing Liao, Yu Dong, Zhenwei Peng, Qian Zhou, Bin Li, Sui Peng, Ning Zhang
OBJECTIVE: To evaluate the colorectal cancer (CRC) prevention effect of metformin in comparison with that of other T2DM medications from a Markov model perspective. METHODS: Literature concerning CRC morbidity of T2DM patients with metformin or other diabetes medications treatment was reviewed in PubMed and Cochrane Library database from September 2010 to December 2016. INCLUSION CRITERIA: (1)enrolled population was adult patients with T2DM but without CRC; (2) any of the parameters applied in our model was reported; (3) randomized clinical trials (RCTs), quasi-randomized trials, prospective or retrospective cohort studies...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28642710/tacrolimus-updated-guidelines-through-poppk-modeling-how-to-benefit-more-from-cyp3a-pre-emptive-genotyping-prior-to-kidney-transplantation
#4
Jean-Baptiste Woillard, Michel Mourad, Michael Neely, Arnaud Capron, Ron H van Schaik, Teun van Gelder, Nuria Lloberas, Dennis A Hesselink, Pierre Marquet, Vincent Haufroid, Laure Elens
Tacrolimus (Tac) is a profoundly effective immunosuppressant that reduces the risk of rejection after solid organ transplantation. However, its use is hampered by its narrow therapeutic window along with its highly variable pharmacological (pharmacokinetic [PK] and pharmacodynamic [PD]) profile. Part of this variability is explained by genetic polymorphisms affecting the metabolic pathway. The integration of CYP3A4 and CY3A5 genotype in tacrolimus population-based PK (PopPK) modeling approaches has been proven to accurately predict the dose requirement to reach the therapeutic window...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28629395/early-experiences-from-one-of-the-first-treatment-programs-for-chronic-hepatitis-b-in-sub-saharan-africa
#5
Hanna Aberra, Hailemichael Desalegn, Nega Berhe, Girmay Medhin, Kathrine Stene-Johansen, Svein Gunnar Gundersen, Asgeir Johannessen
BACKGROUND: Treatment for chronic hepatitis B (CHB) is virtually absent in sub-Saharan Africa. Here we present early experiences from a pilot program for treatment of CHB in Ethiopia. METHODS: Adults (≥18 years) with CHB were included in a cohort study at St. Paul's Hospital Millennium Medical College, Addis Ababa, from February 2015. The baseline assessment included liver function tests, viral markers and transient elastography (Fibroscan 402, Echosense, France)...
June 19, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28628784/identifying-populations-sensitive-to-environmental-chemicals-by-simulating-toxicokinetic-variability
#6
Caroline L Ring, Robert G Pearce, R Woodrow Setzer, Barbara A Wetmore, John F Wambaugh
The thousands of chemicals present in the environment (USGAO, 2013) must be triaged to identify priority chemicals for human health risk research. Most chemicals have little of the toxicokinetic (TK) data that are necessary for relating exposures to tissue concentrations that are believed to be toxic. Ongoing efforts have collected limited, in vitro TK data for a few hundred chemicals. These data have been combined with biomonitoring data to estimate an approximate margin between potential hazard and exposure...
June 16, 2017: Environment International
https://www.readbyqxmd.com/read/28606934/cell-lineage-of-timed-cohorts-of-tbx6-expressing-cells-in-wild-type-and-tbx6-mutant-embryos
#7
Daniel Concepcion, Andrew J Washkowitz, Akiko DeSantis, Phillip Ogea, Jason I Yang, Nataki C Douglas, Virginia E Papaioannou
Tbx6 is a T-box transcription factor with multiple roles in embryonic development as evidenced by dramatic effects on mesoderm cell fate determination, left/right axis determination, and somite segmentation in mutant mice. The expression of Tbx6 is restricted to the primitive streak and presomitic mesoderm, but some of the phenotypic features of mutants are not easily explained by this expression pattern. We have used genetically-inducible fate mapping to trace the fate of Tbx6-expressing cells in wild type and mutant embryos to explain some of the puzzling features of the mutant phenotype...
June 12, 2017: Biology Open
https://www.readbyqxmd.com/read/28601303/device-specific-evaluation-of-intraventricular-left-ventricular-assist-device-position-by-quantitative-coaxiality-analysis
#8
Amedeo Anselmi, Sophie Collin, Pascal Haigron, Jean-Philippe Verhoye, Erwan Flecher
BACKGROUND: Patient-specific anatomy may influence the final intraventricular positioning of inflow cannula in left ventricular assist device (LVAD) recipients. An association exists between such positioning and clinical outcomes (specifically, orientation toward the interventricular septum has negative prognostic implications). Alternative commercially available LVADs are characterized by markedly different design, with potential consequences on intrathoracic fitting among individual patients...
June 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28600860/estimating-the-accuracy-of-a-reduced-order-model-for-the-calculation-of-fractional-flow-reserve-ffr
#9
Etienne Boileau, Sanjay Pant, Carl Roobottom, Igor Sazonov, Jingjing Deng, Xianghua Xie, Perumal Nithiarasu
Image-based non-invasive fractional flow reserve (FFR) is an emergent approach to determine the functional relevance of coronary stenoses. The present work aimed to determine the feasibility of using a method based on coronary computed tomography angiography (CCTA) and reduced-order models (0D-1D) for the evaluation of coronary stenoses. The reduced-order methodology (cFFRro ) was kept as simple as possible and did not include pressure drop or stenosis models. The geometry definition was incorporated into the physical model used to solve coronary flow and pressure...
June 9, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28597555/harnessing-scientific-and-technological-advances-to-improve-equity-in-kidney-allocation-policies
#10
Anat R Tambur, Benoit Audry, Corinne Antoine, Caroline Suberbielle, Denis Glotz, Christian Jacquelinet
We reported that current assignment of HLA-DQ is a barrier to organ allocation. Here we simulated the impact of incorporating HLA-DQ antigens and antibodies as A/B and αβ allelic variants, respectively, on calculated PRA and probability of finding potential compatible donors (PCD). A cohort of 1224 donors and 2075 sensitized candidates was analyzed using HLA-DQαβ allelic (study) versus serologic (current practice) nomenclature. A significant (p<10(-4) ) decrease in cPRA was observed with higher impact for male versus female, and first transplant versus retransplant (p<10(-4) ), affecting mostly patients with moderate cPRA (30-80%)...
June 8, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28584534/impact-of-virtual-microscopy-with-conventional-microscopy-on-student-learning-in-dental-histology
#11
Alka Harish Hande, Vidya K Lohe, Minal S Chaudhary, Madhuri N Gawande, Swati K Patil, Prajakta R Zade
BACKGROUND: In dental histology, the assimilation of histological features of different dental hard and soft tissues is done by conventional microscopy. This traditional method of learning prevents the students from screening the entire slide and change of magnification. To address these drawbacks, modification in conventional microscopy has evolved and become motivation for changing the learning tool. Virtual microscopy is the technique in which there is complete digitization of the microscopic glass slide, which can be analyzed on a computer...
March 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28564701/the-impact-of-lens-opacity-on-sd-oct-retinal-nerve-fiber-layer-and-bruch-s-membrane-opening-measurements-using-the-anatomical-positioning-system-aps
#12
Matthias M Mauschitz, Felix Roth, Frank G Holz, Monique M B Breteler, Robert P Finger
Purpose: To evaluate the impact of lens opacity on retinal nerve fiber layer thickness (RNFLT) and Bruch's membrane opening (BMO) measurements. Methods: Fifty-nine randomly selected patients without any other relevant ocular pathology undergoing elective routine cataract surgery in two specialized eye clinics were enrolled. RNFLT, BMO area, and BMO minimum rim width (BMO-MRW) were assessed with the Heidelberg Engineering Spectralis OCT using the anatomical positioning system (APS) prior to and 1 day after cataract surgery using a ring scan at different eccentricities of the disc (3...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28552097/community-acquired-staphylococcus-aureus-bacteremia-studies-of-risk-and-prognosis-with-special-attention-to-diabetes-mellitus-and-chronic-heart-failure
#13
Jesper Smit
Community-acquired Staphylococcus aureus bacteremia (CA-SAB) is a serious infection with detrimental clinical effects. Chronic diseases constitute some of the most important risk and prognostic factors for CA-SAB. The prevalence of diabetes and chronic heart failure (CHF) is rapidly increasing on a global scale, nevertheless, there are few data available specifically elucidating the influence of these chronic conditions on CA-SAB risk and outcome. Therefore, to extend the current knowledge, we aimed to I) elucidate the impact of different definitions of healthcare-associated (HCA) infection on the prevalence of HCA-SAB, patient characteristics, and mortality, II) to investigate whether diabetes is a risk factor for CA-SAB, III) to ascertain the prognostic influence of diabetes on CA-SAB outcome, and IV) to investigate the influence of CHF on mortality in patients with CA-SAB...
May 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28550006/virtual-visits-and-patient-centered-care-results-of-a-patient-survey-and-observational-study
#14
Kimberlyn Marie McGrail, Megan Alyssa Ahuja, Chad Andrew Leaver
BACKGROUND: Virtual visits are clinical interactions in health care that do not involve the patient and provider being in the same room at the same time. The use of virtual visits is growing rapidly in health care. Some health systems are integrating virtual visits into primary care as a complement to existing modes of care, in part reflecting a growing focus on patient-centered care. There is, however, limited empirical evidence about how patients view this new form of care and how it affects overall health system use...
May 26, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28546097/10-years-of-denosumab-treatment-in-postmenopausal-women-with-osteoporosis-results-from-the-phase-3-randomised-freedom-trial-and-open-label-extension
#15
Henry G Bone, Rachel B Wagman, Maria L Brandi, Jacques P Brown, Roland Chapurlat, Steven R Cummings, Edward Czerwiński, Astrid Fahrleitner-Pammer, David L Kendler, Kurt Lippuner, Jean-Yves Reginster, Christian Roux, Jorge Malouf, Michelle N Bradley, Nadia S Daizadeh, Andrea Wang, Paula Dakin, Nicola Pannacciulli, David W Dempster, Socrates Papapoulos
BACKGROUND: Long-term safety and efficacy of osteoporosis treatment are important because of the chronic nature of the disease. We aimed to assess the long-term safety and efficacy of denosumab, which is widely used for the treatment of postmenopausal women with osteoporosis. METHODS: In the multicentre, randomised, double-blind, placebo-controlled, phase 3 FREEDOM trial, postmenopausal women aged 60-90 years with osteoporosis were enrolled in 214 centres in North America, Europe, Latin America, and Australasia and were randomly assigned (1:1) to receive 60 mg subcutaneous denosumab or placebo every 6 months for 3 years...
July 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28532974/cost-effectiveness-analysis-of-corneal-collagen-crosslinking-for-progressive-keratoconus
#16
Daniel A Godefrooij, Marie-Josee J Mangen, Elsie Chan, David P S O'Brart, Saskia M Imhof, G Ardine de Wit, Robert P L Wisse
PURPOSE: To evaluate the cost effectiveness of corneal collagen crosslinking (CXL) for progressive keratoconus from the healthcare payer's perspective. DESIGN: A probabilistic Markov-type model using data from published clinical trials and cohort studies. PARTICIPANTS: Two identical cohorts, each comprising 1000 virtual patients with progressive bilateral keratoconus, were modeled; one cohort underwent CXL and the other cohort received no intervention...
May 19, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28521886/lean-body-mass-is-the-predominant-anthropometric-risk-factor-for-atrial%C3%A2-fibrillation
#17
Morten Fenger-Grøn, Kim Overvad, Anne Tjønneland, Lars Frost
BACKGROUND: Obesity is repeatedly emphasized as a risk factor for atrial fibrillation or flutter (AF). However, the underlying evidence may be questioned, as the obvious correlations between various anthropometric measures hamper identification of the characteristics that are biologically driving AF risk, and recent studies suggest that fat carries limited or no independent risk of AF. OBJECTIVES: This study sought to assess mutually adjusted associations among AF risk and height, weight, body mass index, hip and waist circumference, waist-to-hip ratio, and bioelectrical impedance-derived measures of fat mass, lean body mass, and fat percentage...
May 23, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28507230/computational-design-of-treatment-strategies-for-proactive-therapy-on-atopic-dermatitis-using-optimal-control-theory
#18
Panayiotis Christodoulides, Yoshito Hirata, Elisa Domínguez-Hüttinger, Simon G Danby, Michael J Cork, Hywel C Williams, Kazuyuki Aihara, Reiko J Tanaka
Atopic dermatitis (AD) is a common chronic skin disease characterized by recurrent skin inflammation and a weak skin barrier, and is known to be a precursor to other allergic diseases such as asthma. AD affects up to 25% of children worldwide and the incidence continues to rise. There is still uncertainty about the optimal treatment strategy in terms of choice of treatment, potency, duration and frequency. This study aims to develop a computational method to design optimal treatment strategies for the clinically recommended 'proactive therapy' for AD...
June 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28503971/mental-vulnerability-helicobacter-pylori-and-incidence-of-hospital-diagnosed-peptic-ulcer-over-28-years-in-a-population-based-cohort
#19
Susan Levenstein, Rikke Kart Jacobsen, Steffen Rosenstock, Torben Jørgensen
OBJECTIVE: To examine whether mental vulnerability, an enduring personality characteristic, predicts incident hospital-diagnosed ulcer over three decades. MATERIALS AND METHODS: A population-based cohort study enrolled 3365 subjects with no ulcer history, ages 30-60, in 1982-3. Mental vulnerability, Helicobacter pylori IgG antibodies, socioeconomic status, and sleep duration were determined at baseline; non-steroidal antiinflammatory drug use, smoking, leisure time physical activity, and alcohol consumption both at baseline and in 1993-4...
May 14, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28491899/diagnostic-and-cost-utility-of-whole-exome-sequencing-in-peripheral-neuropathy
#20
Maie Walsh, Katrina M Bell, Belinda Chong, Emma Creed, Gemma R Brett, Kate Pope, Natalie P Thorne, Simon Sadedin, Peter Georgeson, Dean G Phelan, Timothy Day, Jessica A Taylor, Adrienne Sexton, Paul J Lockhart, Lynette Kiers, Michael Fahey, Ivan Macciocca, Clara L Gaff, Alicia Oshlack, Eppie M Yiu, Paul A James, Zornitza Stark, Monique M Ryan
OBJECTIVE: To explore the diagnostic utility and cost effectiveness of whole exome sequencing (WES) in a cohort of individuals with peripheral neuropathy. METHODS: Singleton WES was performed in individuals recruited though one pediatric and one adult tertiary center between February 2014 and December 2015. Initial analysis was restricted to a virtual panel of 55 genes associated with peripheral neuropathies. Patients with uninformative results underwent expanded analysis of the WES data...
May 2017: Annals of Clinical and Translational Neurology
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