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https://www.readbyqxmd.com/read/29667880/motion-artifacts-lesion-type-and-parenchymal-enhancement-in-breast-mri-what-does-really-influence-diagnostic-accuracy
#1
Paola Clauser, Matthias Dietzel, Michael Weber, Clemens G Kaiser, Pascal At Baltzer
Background Motion artifacts can reduce image quality of breast magnetic resonance imaging (MRI). There is a lack of data regarding their effect on diagnostic estimates. Purpose To evaluate factors that potentially influence readers' diagnostic estimates in breast MRI: motion artifacts; amount of fibroglandular tissue; background parenchymal enhancement; lesion size; and lesion type. Material and Methods This Institutional Review Board-approved, retrospective, cross-sectional, single-center study included 320 patients (mean age = 55...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29667735/beyond-voltage-gated-ion-channels-voltage-operated-membrane-proteins-and-cellular-processes
#2
REVIEW
Jianping Zhang, Xingjuan Chen, Yucong Xue, Nikita Gamper, Xuan Zhang
Voltage-gated ion channels were believed to be the only voltage-sensitive proteins in excitable (and some non-excitable) cells for a long time. Emerging evidence indicates that the voltage-operated model is shared by some other transmembrane proteins expressed in both excitable and non-excitable cells. In this review, we summarize current knowledge about voltage-operated proteins, which are not classic voltage-gated ion channels as well as the voltage-dependent processes in cells for which single voltage-sensitive proteins have yet to be identified...
April 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29667201/functioning-of-potassium-and-magnesium-in-photosynthesis-photosynthate-translocation-and-photoprotection
#3
Merle Tränkner, Ershad Tavakol, Bálint Jákli
Potassium (K) and magnesium (Mg) are mineral nutrients that are required in large quantities by plants. Both elements critically contribute to the process of photosynthesis and the subsequent long-distance transport of photoassimilates. If K or Mg are not present in sufficient quantities in photosynthetic tissues, complex interactions of anatomical, physiological and biochemical responses result in a reduction of photosynthetic carbon assimilation. As a consequence, excessive production of reactive oxygen species causes photooxidation of the photosynthetic apparatus and cause an up-regulation of photoprotective mechanisms...
April 18, 2018: Physiologia Plantarum
https://www.readbyqxmd.com/read/29667026/mast-cell-interactions-and-crosstalk-in-regulating-allergic-inflammation
#4
REVIEW
Tania E Velez, Paul J Bryce, Kathryn E Hulse
PURPOSE OF REVIEW: This review summarizes recent findings on mast cell biology with a focus on IgE-independent roles of mast cells in regulating allergic responses. RECENT FINDINGS: Recent studies have described novel mast cell-derived molecules, both secreted and membrane-bound, that facilitate cross-talk with a variety of immune effector cells to mediate type 2 inflammatory responses. Mast cells are complex and dynamic cells that are persistent in allergy and are capable of providing signals that lead to the initiation and persistence of allergic mechanisms...
April 17, 2018: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/29666996/comparison-of-t2-relaxation-values-in-subtalar-cartilage-between-patients-with-lateral-instability-of-the-ankle-joint-and-healthy-volunteers
#5
Hyun Su Kim, Young Cheol Yoon, Ki Sun Sung, Min-Ji Kim, Soohyun Ahn
PURPOSE: To evaluate the difference between T2 relaxation values of the subtalar cartilage in lateral ankle instability patients and healthy volunteers. MATERIALS AND METHODS: This institutional review board-approved study included 27 preoperative magnetic resonance imaging (MRI) examinations of 26 patients who underwent Broström operations. Data of previously enrolled healthy volunteers (12 volunteers, 13 MRIs) were used as controls. Two radiologists independently measured T2 values in eight posterior subtalar joint cartilage compartments: central calcaneus anterior (CCA) and posterior (CCP), central talus anterior (CTA) and posterior (CTP), lateral calcaneus anterior (LCA) and posterior (LCP), and lateral talus anterior (LTA) and posterior (LTP)...
April 17, 2018: European Radiology
https://www.readbyqxmd.com/read/29666310/role-of-patient-and-public-involvement-in-implementation-research-a-consensus-study
#6
Kara Gray-Burrows, Thomas Willis, Robbie Foy, Martin Rathfelder, Pauline Bland, Allison Chin, Susan Hodgson, Gus Ibegbuna, Graham Prestwich, Kirsty Samuel, Laurence Wood, Farhat Yaqoob, Rosemary R C McEachan
BACKGROUND: Patient and public involvement (PPI) is often an essential requirement for research funding. Distinctions can be drawn between clinical research, which generally focuses on patients, and implementation research, which generally focuses on health professional behaviour. There is uncertainty about the role of PPI in this latter field. We explored and defined the roles of PPI in implementation research to inform relevant good practice guidance. METHODS: We used a structured consensus process using a convenience sample panel of nine experienced PPI and two researcher members...
April 17, 2018: BMJ Quality & Safety
https://www.readbyqxmd.com/read/29666180/thrombectomy-for-acute-ischemic-stroke-in-the-elderly-a-real-world-experience
#7
Ali Alawieh, Arindam Chatterjee, Wuwei Feng, Guilherme Porto, Jan Vargas, Ryan Kellogg, Aquilla S Turk, Raymond D Turner, M Imran Chaudry, Alejandro M Spiotta
INTRODUCTION: Completed randomized trials on endovascular thrombectomy (ET) did not independently assess the efficacy of ET in the elderly (≥80 years old) who were often excluded or under-represented in trials. There were also inconsistent criteria for patient selection in this population across the different trials. This work evaluates outcomes after ET for acute ischemic stroke (AIS) in the elderly at a high volume stroke center. METHODS: We reviewed all cases of AIS that underwent a direct aspiration first pass technique (ADAPT) thrombectomy for large vessel occlusions between March 2013 and October 2017 while comparing outcomes in the elderly with younger counterparts...
April 17, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29666137/the-french-prospective-multisite-registry-on-sudden-unexpected-infant-death-omin-rationale-and-study-protocol
#8
Karine Levieux, Hugues Patural, Inge Harrewijn, Elisabeth Briand Huchet, Sophie de Visme, Géraldine Gallot, Martin Chalumeau, Christèle Gras Le Guen, Matthieu Hanf
INTRODUCTION: Even after 'back-to-sleep' campaigns, sudden unexpected infant death (SUID) continues to be the leading cause of death for infants 1 month to 1 year old in developed countries, with devastating social, psychological and legal implications for families. To sustainably tackle this problem and decrease the number of SUIDs, a French SUID registry was initiated in 2015 to (1) inform prevention with standardised data, (2) understand the mechanisms leading to SUID and the contribution of the already known or newly suggested risk factors and (3) gather a multidisciplinary group of experts to coordinate and develop innovative and urgent research in the SUID area...
April 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29666136/systematic-review-and-meta-analysis-of-diabetes-mellitus-cardiovascular-and-respiratory-condition-epidemiology-in-sexual-minority-women
#9
Catherine Meads, Adam Martin, Jeffrey Grierson, Justin Varney
OBJECTIVE: Sexual minority women (SMW) experience higher chronic disease risk factors than heterosexual counterparts. However, it was unclear if these risks translate into higher physical condition rates. This systematic review evaluates cardiovascular disease (CVD), hypertension, respiratory disease and diabetes mellitus in SMW. METHODS: A protocol was registered with the Prospero database (CRD42016050299). Included were studies reporting mortality, incidence or prevalence of the above-listed conditions in SMW compared with heterosexual women...
April 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29666134/adoption-of-a-novel-surgical-innovation-into-clinical-practice-protocol-for-a-qualitative-systematic-review-examining-surgeon-views
#10
Thomas L Lewis, Hugh N Furness, George W Miller, Nicholas Parsons, Kate Seers, Martin Underwood, Andrew J Metcalfe
INTRODUCTION: Efficient adoption of clinically effective novel surgical innovations has great potential benefits for patients. Factors affecting the adoption of surgical innovation are not well understood and proposed models of adoption do not accurately correlate with historical evidence. This protocol is for a systematic review that aims to identify the qualitative evidence relating to surgeon views regarding the adoption of novel surgical innovation into clinical practice. METHODS AND ANALYSIS: A systematic review following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidance will be performed...
April 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29665987/beyond-ldl-what-role-for-pcsk9-in-triglyceride-rich-lipoprotein-metabolism
#11
REVIEW
Wieneke Dijk, Cédric Le May, Bertrand Cariou
Elevated plasma triglyceride (TG) levels are an independent risk factor for cardiovascular disease (CVD). Proprotein convertase subtilisin-kexin 9 (PCSK9) - a protein therapeutically targeted to lower plasma cholesterol levels - might regulate plasma TG-rich lipoprotein (TRL) levels. We provide a timely and critical review of the current evidence for a role of PCSK9 in TRL metabolism by assessing the impact of PCSK9 gene variants, by reviewing recent clinical data with PCSK9 inhibitors, and by describing the potential mechanisms by which PCSK9 might regulate TRL metabolism...
April 14, 2018: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/29665951/statistical-considerations-for-pediatric-multidrug-resistant-tuberculosis-efficacy-trials
#12
S Kim, J A Seddon, A J Garcia-Prats, G Montepiedra
The inclusion of newly licensed or repurposed drugs in regimens to treat children for multidrug-resistant tuberculosis (TB) may lead to treatment that is shorter than traditional regimens and composed only of oral medications. As an all-oral regimen may be more acceptable and have a better safety profile than current regimens, demonstrating non-inferiority may be satisfactory. Demonstrating non-inferior efficacy requires setting a non-inferiority margin and safeguarding study assay sensitivity. Multi-arm, multistage designs may currently not be appropriate in pediatric trials because of the lack of sensitive and specific intermediate outcomes...
May 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29665426/human-papillomavirus-vaccine-and-demyelinating-diseases-a-systematic-review-and-meta-analysis
#13
Julie Mouchet, Francesco Salvo, Emanuel Raschi, Elisabetta Poluzzi, Ippazio Cosimo Antonazzo, Fabrizio De Ponti, Bernard Bégaud
BACKGROUND: Approved in 2006, human papillomavirus (HPV) vaccines were initially targeted for girls aged 9-14 years. Although the safety of these vaccines has been monitored through post-licensure surveillance programmes, cases of neurological events have been reported worldwide. PURPOSE: The present study aimed to assess the risk of developing demyelination after HPV immunization by meta-analysing risk estimates from pharmacoepidemiologic studies. DATA SOURCES: A systematic review was conducted in Medline, Embase, ISI Web of Science and the Cochrane Library from inception to 10 May 2017, without language restriction...
April 14, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29665308/calcified-cerebral-emboli-incidence-and-implications
#14
Miguel Bardon, Julian Hanson, Bill O'Brien, Adil Naeem
INTRODUCTION: Calcified cerebral emboli are an increasingly recognized cause of ischaemic stroke, although recognition amongst general radiologists and clinicians can be limited. Recent literature suggests that calcified cerebral emboli are likely more common than originally thought. This study aims to define the prevalence of calcified cerebral emboli as the most likely aetiology within a cohort of confirmed cases of acute stroke, as well as compare and contrast these cases with cases of 'incidental' intracranial calcification...
April 17, 2018: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/29665262/effects-of-inspiratory-muscle-training-in-copd-patients-a-systematic-review-and-meta-analysis
#15
REVIEW
Marc Beaumont, Patrice Forget, Francis Couturaud, Gregory Reychler
OBJECTIVES: In chronic obstructive pulmonary disease (COPD), quality of life and exercise capacity are altered in relationship to dyspnea. Benefits of inspiratory muscle training (IMT) on quality of life, dyspnea and exercise capacity were demonstrated, but when it is associated to pulmonary rehabilitation (PR), its efficacy on dyspnea is not demonstrated. The aim of this systematic review with meta analysis was to verify the effect of IMT using threshold devices in COPD patients on dyspnea, quality of life, exercise capacity and inspiratory muscles strength, and the added effect on dyspnea of IMT associated with PR (versus PR alone)...
April 17, 2018: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29665204/factor-viii-products-and-inhibitor-development-in-previously-treated-patients-with-severe-or-moderately-severe-haemophilia-a-a-systematic-review
#16
Shermarke Hassan, Antonino Cannavò, Samantha Gouw, Frits R Rosendaal, Johanna van der Bom
BACKGROUND: Patients with severe haemophilia A who have been treated extensively with factor VIII (FVIII) products face a low but potentially serious risk of inhibitor development. It is unknown why these patients break immunological tolerance and data on product-related immunogenicity is scarce. AIMS: To summarize the currently available evidence on the relationship between inhibitor development and recombinant FVIII product type in previously treated patients with severe haemophilia A...
April 17, 2018: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29665100/accuracy-of-ultrasound-for-preoperative-assessment-of-tumor-size-in-patients-with-newly-diagnosed-breast-cancer-is-it-affected-by-the-background-parenchymal-echotexture
#17
Kyung Hee Ko, Eun Ju Son, In Wha Kim
OBJECTIVES: To assess the impact of the background parenchymal echotexture on the accuracy of tumor size estimation using breast ultrasound (US). METHODS: A total of 140 women with newly diagnosed invasive breast cancer from January 2014 to December 2015 were enrolled in this study. Two radiologists retrospectively reviewed US images in consensus for background parenchymal echotexture interpretation. The maximum tumor diameter from static images was recorded. Tumor size measurements were considered as having agreement with histologic results if they were within ±5 mm compared to the pathologic size...
April 17, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29665028/meta-analysis-evaluating-music-interventions-for-anxiety-and-pain-in-surgery
#18
REVIEW
A Y R Kühlmann, A de Rooij, L F Kroese, M van Dijk, M G M Hunink, J Jeekel
BACKGROUND: This study aimed to evaluate anxiety and pain following perioperative music interventions compared with control conditions in adult patients. METHODS: Eleven electronic databases were searched for full-text publications of RCTs investigating the effect of music interventions on anxiety and pain during invasive surgery published between 1 January 1980 and 20 October 2016. Results and data were double-screened and extracted independently. Random-effects meta-analysis was used to calculate effect sizes as standardized mean differences (MDs)...
April 17, 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29664991/haemostatic-therapies-for-acute-spontaneous-intracerebral-haemorrhage
#19
REVIEW
Rustam Al-Shahi Salman, Zhe Kang Law, Philip M Bath, Thorsten Steiner, Nikola Sprigg
BACKGROUND: Outcome after spontaneous (non-traumatic) intracerebral haemorrhage (ICH) is influenced by haematoma volume; up to one-third of ICHs enlarge within 24 hours of onset. Early haemostatic therapy might improve outcome by limiting haematoma growth. This is an update of a Cochrane Review first published in 2006, and last updated in 2009. OBJECTIVES: To examine 1) the effectiveness and safety of individual classes of haemostatic therapies, compared against placebo or open control, in adults with acute spontaneous intracerebral haemorrhage, and 2) the effects of each class of haemostatic therapy according to the type of antithrombotic drug taken immediately before ICH onset (i...
April 17, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29664916/is-periodontitis-a-risk-indicator-for-cancer-a-meta-analysis
#20
Stefano Corbella, Paolo Veronesi, Viviana Galimberti, Roberto Weinstein, Massimo Del Fabbro, Luca Francetti
BACKGROUND: The aim of the present systematic review was to evaluate the hypothesis of an association between periodontitis and the development of cancer. METHODS: Two reviewers independently screened electronic and manual sources for pertinent articles. Primary outcome measures were the occurrence of neoplasm diagnosis in exposed and non-exposed groups, reported to evaluate association between cancer and periodontitis. RESULTS: Of the 490 initially retrieved papers 10 were included in the qualitative synthesis and eight in the quantitative synthesis; the eight papers covered six studies...
2018: PloS One
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