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https://www.readbyqxmd.com/read/28735215/estimation-of-individual-axon-bundle-properties-by-a-multi-resolution-discrete-search-method
#1
Ricardo Coronado-Leija, Alonso Ramirez-Manzanares, Jose Luis Marroquin
A stable, accurate and robust-to-noise method for the estimation of the intra-voxel bundle-wise diffusion properties for diffusion-weighted magnetic resonance imaging is presented. The proposed method overcomes some of the limitations of most of the multi-fiber algorithms in the literature and extends them to estimate the diffusion profiles, improving the estimation of the intra-voxel geometry at challenging microstructure configurations, that is to say: relatively small crossing angles, different voxel-wise anisotropic diffusion profiles and low SNR...
June 29, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28735167/first-observation-of-metal-ion-induced-structural-fluctuations-of-%C3%AE-helical-peptides-by-using-diffracted-x-ray-tracking
#2
Daiki Usui, Satomi Inaba, Hiroshi Sekiguchi, Yuji C Sasaki, Toshiki Tanaka, Masayuki Oda
In order to analyze protein structural dynamics, we designed simple model peptides whose structures changed from random-coil to helix-bundle structures by forming stable hydrophobic core in the presence of metal ions. The strategy involved destabilizing a de novo designed three helix-bundle protein by substituting the residues present in its hydrophobic core with histidine and small amino acids. The conformational changes of peptides induced upon binding of Zn(2+) to histidine were analyzed using circular dichroism spectroscopy, which revealed peptides, HA and HG, to be good candidates for further analyses...
July 14, 2017: Biophysical Chemistry
https://www.readbyqxmd.com/read/28734886/pre-transcatheter-aortic-valve-replacement-right-bundle-branch-block-a-bundle-of-trouble
#3
EDITORIAL
Ron Waksman, Arie Steinvil
No abstract text is available yet for this article.
July 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28734885/clinical-impact-of-baseline-right-bundle-branch-block-in-patients-undergoing-transcatheter-aortic-valve-replacement
#4
Vincent Auffret, John G Webb, Hélène Eltchaninoff, Antonio J Muñoz-García, Dominique Himbert, Corrado Tamburino, Luis Nombela-Franco, Fabian Nietlispach, César Morís, Marc Ruel, Antonio E Dager, Vicenç Serra, Asim N Cheema, Ignacio J Amat-Santos, Fábio Sandoli de Brito, Pedro Alves Lemos, Alexandre Abizaid, Rogério Sarmento-Leite, Eric Dumont, Marco Barbanti, Eric Durand, Juan H Alonso Briales, Alec Vahanian, Claire Bouleti, Sebastiano Immè, Francesco Maisano, Raquel Del Valle, Luis Miguel Benitez, Bruno García Del Blanco, Rishi Puri, François Philippon, Marina Urena, Josep Rodés-Cabau
OBJECTIVES: This study sought to assess the influence of baseline right bundle branch block (RBBB) on all-cause and cardiovascular mortality as well as sudden cardiac death (SCD) among patients undergoing transcatheter aortic valve replacement (TAVR). BACKGROUND: Few data exist regarding the late clinical impact of pre-existing RBBB in TAVR recipients. METHODS: A total of 3,527 patients (mean age 82 ± 8 years, 50.1% men) were evaluated according to the presence of RBBB on baseline electrocardiography...
July 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28734498/surgical-site-infection-reduction-bundle-in-patients-with-gynecologic-cancer-undergoing-colon-surgery
#5
Maria B Schiavone, Lea Moukarzel, Kam Leong, Qin C Zhou, Anoushka M Afonso, Alexia Iasonos, Kara Long Roche, Mario M Leitao, Dennis S Chi, Nadeem R Abu-Rustum, Oliver Zivanovic
OBJECTIVE: Surgical site infections (SSIs) can lead to substantial morbidity, prolonged hospitalization, increased costs, and death in patients undergoing colorectal procedures. We sought to investigate the effect of using an SSI reduction bundle on the rate of SSIs in gynecologic cancer patients undergoing colon surgery. METHODS: We identified all gynecologic cancer patients who underwent colon resection at our institution from 2014 to 2016, during which time a service-wide SSI reduction bundle was introduced...
July 19, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28734109/the-cost-of-oropharyngeal-cancer-in-england-a-retrospective-hospital-data-analysis
#6
Sam T Keeping, Michael J Tempest, Stephanie J Stephens, Stuart M Carroll, Richard Simcock, Terence M Jones, Richard Shaw
OBJECTIVES: To estimate the total costs of treating head and neck cancers, specifically oropharyngeal, laryngeal and oral cavity cancer, in secondary care facilities in England during the period 2006/2007 to 2010/2011. DESIGN: Patient records were extracted from an English hospital database to estimate the number of patients treated for oropharyngeal, laryngeal and oral cavity cancer in England. Identified resource use was linked to published United Kingdom cost estimates to quantify the reimbursement of treatment through the Payment by Results system...
July 22, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28733849/novel-pacing-strategies-for-heart-failure-management
#7
REVIEW
Jordan S Leyton-Mange, Theofanie Mela
Cardiac resynchronization therapy has emerged as the gold standard for heart failure patients with left ventricular systolic dysfunction and electrical dyssynchrony from an intrinsic intraventricular conduction delay or right ventricular pacing. However, the limits imposed by the coronary sinus venous anatomy restrict the applicability of the technology for many potential recipients. Furthermore, conventional resynchronization, by virtue of utilizing a single site of epicardial origin for left ventricular activation, is non-physiological...
August 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28733370/reliable-adherence-to-a-copd-care-bundle-mitigates-system-level-failures-and-reduces-copd-readmissions-a-system-redesign-using-improvement-science
#8
Muhammad Ahsan Zafar, Ralph J Panos, Jonathan Ko, Lisa C Otten, Anthony Gentene, Maria Guido, Katherine Clark, Caroline Lee, Jamie Robertson, Evaline A Alessandrini
BACKGROUND: Readmissions of chronic obstructive pulmonary disease (COPD) have devastating effects on patient quality-of-life, disease progression and healthcare cost. Effective interventions to reduce COPD readmissions are needed. OBJECTIVES: Reduce 30-day all-cause readmissions by (1) creating a COPD care bundle that addresses care delivery failures, (2) using improvement science to achieve 90% bundle adherence. SETTING: An 800-bed academic hospital in Ohio, USA...
July 21, 2017: BMJ Quality & Safety
https://www.readbyqxmd.com/read/28733255/nanofiber-structured-hydrogel-yarns-with-ph-response-capacity-and-cardiomyocyte-drivability-for-bio-microactuator-application
#9
Shaohua Wu, Bin Duan, Xiaohong Qin, Jonathan T Butcher
Polymeric hydrogels have great potential in soft biological micro-actuator applications. However, inappropriate micro-architecture, non-anisotropy, weak biomechanics, and inferior response behaviors limit their development. In this study, we designed and manufactured novel polyacrylonitrile (PAN)-based hydrogel yarns composed with uniaxially aligned nanofibers. The nanofibrous hydrogel yarns possessed anisotropic architecture and robust mechanical properties with flexibility, and could be assembled into defined scaffold structures by subsequent processes...
July 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28732071/the-ideas-about-advanced-life-support-and-affecting-factors-at-the-end-stage-of-life-in-a-hospital-in-turkey
#10
Turgay Albayrak, İrfan Şencan, Ömer Akça, Esra Meltem Koç, Hilal Aksoy, Selim Ünsal, İskender Bülbül, Adem Bahadır, İsmail Kasım, Rabia Kahveci, Adem Özkara
BACKGROUND: The participation of the people in health decisions may be structured in various levels. One of these is participation in decisions for the treatment. "Advanced directives" is one of the examples for the participation in decisions for the treatment. AIM: We wanted to determine the decisions on advanced life support at the end-stage of life in case of a life-threatening illness for the people themselves and their first degree relatives and the factors effecting these decisions...
2017: PloS One
https://www.readbyqxmd.com/read/28731975/the-consensus-bundle-on-hypertension-in-pregnancy-and-the-anesthesiologist-doing-all-the-right-things-for-all-the-patients-all-of-the-time
#11
Mihaela Podovei, Brian T Bateman
No abstract text is available yet for this article.
August 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28731875/management-of-complex-spine-surgery
#12
Massimo Lamperti, Boris Tufegdzic, Rafi Avitsian
PURPOSE OF REVIEW: The main objective of this article is to present the updated data regarding the perioperative management of patients undergoing major spine surgery in an era where the surgical techniques are changing and there is a high demand for these surgeries in older and high-risk patients. RECENT FINDINGS: Preoperative assessment and stabilization is now more structured protocol and it is based on a multidisciplinary approach to the patient. The Enhanced Recovery After Surgery (ERAS) programs and the Perioperative Surgical Home on major spine surgery are not yet fully evidence based but it seems that the use of a perioperative optimization of patients and use of a drugs' bundle is more effective than using single drugs or interventions on the postoperative pain reduction and faster recovery from surgery...
July 20, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28731134/a-novel-gene-expression-scoring-system-for-accurate-diagnosis-of-basaloid-squamous-cell-carcinoma-of-the-esophagus
#13
Takeshi Tada, Reiko Honma, Jun-Ichi Imai, Zenichiro Saze, Michihiko Kogure, Shigeru Marubashi, Kazuhiro Tasaki, Masamitu Unakami, Junji Ezaki, Hirosumi Tamura, Akira Nishikawa, Yuko Hashimoto, Satoshi Waguri, Shinya Watanabe, Mitsukazu Gotoh
Basaloid squamous cell carcinoma of the esophagus (BSCE) is a rare variant of squamous cell carcinoma that is difficult to distinguish from other carcinomas by preoperative endoscopic biopsy because of its histological varieties. Accurate diagnosis is essential for adequate treatment, and the methods proposed so far (e.g., immunohistochemical staining) have limitations. In this study, we tried to identify the characteristic bundles of gene expression in BSCE using comprehensive gene expression analysis (CGEA)...
July 19, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28730895/incidence-treatment-strategies-and-outcomes-of-acute-coronary-syndrome-with-and-without-ongoing-myocardial-ischaemia-results-from-the-czech-3-registry
#14
Petr Tousek, Klara Staskova, Anna Mala, Martin Sluka, Alexandra Vodzinska, Radek Jancar, Denisa Maluskova, Jiri Jarkovsky, Petr Widimsky
BACKGROUND: Patients with acute coronary syndrome with signs of ongoing myocardial ischaemia at first medical contact should be indicated for immediate invasive treatment. AIM: To assess the incidence, treatment strategies and outcomes of acute coronary syndrome in a large unselected cohort of patients with respect to the signs of ongoing myocardial ischaemia. METHODS: The CZECH-3 registry included 1754 consecutive patients admitted for suspected acute coronary syndrome to 43 hospitals during a 2-month period in the autumn of 2015...
July 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28730776/institutional-variations-in-nutritional-aspects-of-enhanced-recovery-pathways-after-elective-surgery-for-colon-cancer
#15
Fotios Seretis, Panagiota Kaisari, Kasun Wanigasooriya, Edward Rawstorne, Charalampos Seretis
PURPOSE: Perioperative nutritional optimisation is one of the key aspects of the Enhanced Recovery after Surgery (ERAS) pathway after elective colorectal cancer resections. Despite the general acceptance of ERAS as a safe and cost-effective perioperative care bundle, significant variations in terms of nutritional support exist among colorectal units. METHODS: To assess these variations, we performed a cross-sectional online survey among colorectal surgical residents within a UK region...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28729906/update-on-pediatric-sepsis-a-review
#16
REVIEW
Tatsuya Kawasaki
BACKGROUND: Sepsis is one of the leading causes of mortality among children worldwide. Unfortunately, however, reliable evidence was insufficient in pediatric sepsis and many aspects in clinical practice actually depend on expert consensus and some evidence in adult sepsis. More recent findings have given us deep insights into pediatric sepsis since the publication of the Surviving Sepsis Campaign guidelines 2012. MAIN TEXT: New knowledge was added regarding the hemodynamic management and the timely use of antimicrobials...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28729904/impact-of-a-sepsis-bundle-in-wards-of-a-tertiary-hospital
#17
F Teles, W G Rodrigues, M G T C Alves, C F T Albuquerque, S M O Bastos, M F A Mota, E S Mota, F J L Silva
BACKGROUND: Sepsis is a prevalent disease worldwide and still exhibits high rates of mortality. In the last years, many interventions aiming a positive impact on sepsis evolution have been studied. One of the main is the use of managed care protocols (sepsis bundles), which consist in systematization of diagnosis and treatment, such as standardization of antibiotics, collection of specific tests (cultures, lactate), and fluid replacement. Some studies have shown a reduction in hospital costs and lower mortality with the use of these tools...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28729873/ageratum-enation-virus-infection-induces-programmed-cell-death-and-alters-metabolite-biosynthesis-in-papaver-somniferum
#18
Ashish Srivastava, Lalit Agrawal, Rashmi Raj, Meraj Jaidi, Shri K Raj, Swati Gupta, Ritu Dixit, Poonam C Singh, Tusha Tripathi, Om P Sidhu, Brahma N Singh, Sudhir Shukla, Puneet S Chauhan, Susheel Kumar
A previously unknown disease which causes severe vein thickening and inward leaf curl was observed in a number of opium poppy (Papaver somniferum L.) plants. The sequence analysis of full-length viral genome and associated betasatellite reveals the occurrence of Ageratum enation virus (AEV) and Ageratum leaf curl betasatellite (ALCB), respectively. Co-infiltration of cloned agroinfectious DNAs of AEV and ALCB induces the leaf curl and vein thickening symptoms as were observed naturally. Infectivity assay confirmed this complex as the cause of disease and also satisfied the Koch's postulates...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28729461/morphology-of-the-archaellar-motor-and-associated-cytoplasmic-cone-in-thermococcus-kodakaraensis
#19
Ariane Briegel, Catherine M Oikonomou, Yi-Wei Chang, Andreas Kjær, Audrey N Huang, Ki Woo Kim, Debnath Ghosal, Hong H Nguyen, Dorothy Kenny, Rachel R Ogorzalek Loo, Robert P Gunsalus, Grant J Jensen
Archaeal swimming motility is driven by archaella: rotary motors attached to long extracellular filaments. The structure of these motors, and particularly how they are anchored in the absence of a peptidoglycan cell wall, is unknown. Here, we use electron cryotomography to visualize the archaellar basal body in vivo in Thermococcus kodakaraensis KOD1. Compared to the homologous bacterial type IV pilus (T4P), we observe structural similarities as well as several unique features. While the position of the cytoplasmic ATPase appears conserved, it is not braced by linkages that extend upward through the cell envelope as in the T4P, but rather by cytoplasmic components that attach it to a large conical frustum up to 500 nm in diameter at its base...
July 19, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28728517/using-molecular-dynamics-for-the-refinement-of-atomistic-models-of-gpcrs-by-homology-modeling
#20
Cecylia S Lupala, Bahareh Rasaeifar, Patricia Gomez-Gutierrez, Juan J Perez
Despite GPCRs share a common seven helix bundle, analysis of the diverse crystallographic structures available reveal specific features that might be relevant for ligand design. Despite the number of crystallographic structures of GPCRs is steadily increasing, there are still challenges that hamper the availability of new structures. In the absence of a crystallographic structure, homology modelling remains one of the important techniques for constructing 3D models of proteins. In the present study we investigated the use of molecular dynamics simulations for the refinement of GPCRs models constructed by homology modeling...
July 20, 2017: Journal of Biomolecular Structure & Dynamics
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