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https://www.readbyqxmd.com/read/27932562/intraoperative-assessment-of-tumor-resection-margins-in-breast-conserving-surgery-using-18f-fdg-cerenkov-luminescence-imaging-a-first-in-human-feasibility-study
#1
Maarten Ruben Grootendorst, Massimiliano Cariati, Sarah Pinder, Ashutosh Kothari, Michael Douek, Tibor Kovacs, Hisham Hamed, Amit Pawa, Fiona Nimmo, Julie Owen, Vernie Ramalingam, Sweta Sethi, Sanjay Mistry, Kunal Vyas, David Tuch, Alan Britten, Mieke Van Hemelrijck, Gary Cook, Chris Sibley-Allen, Sarah Allen, Arnie Purushotham
RATIONALE: In early-stage breast cancer, the primary treatment option for the majority of women is breast-conserving surgery (BCS). There is a clear need for more accurate techniques to assess resection margins intraoperatively, as on average 20% of patients require further surgery to achieve clear margins. Cerenkov luminescence imaging (CLI) combines optical and molecular imaging by detecting light emitted by (18)F-fluorodeoxyglucose ((18)F-FDG). Its high-resolution and small size imaging equipment makes CLI a promising technology for intraoperative margin assessment...
December 8, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27908347/prognostic-implications-of-changes-in-n-terminal-pro-b-type-natriuretic-peptide-in-patients-with-heart-failure
#2
Michael R Zile, Brian L Claggett, Margaret F Prescott, John J V McMurray, Milton Packer, Jean L Rouleau, Karl Swedberg, Akshay S Desai, Jianjian Gong, Victor C Shi, Scott D Solomon
BACKGROUND: Natriuretic peptides (NP) have prognostic value in heart failure (HF), although the clinical importance of changes in NP from baseline is unclear. OBJECTIVES: The authors assessed whether a reduction in N-terminal pro-B-type NP (NT-proBNP) was associated with a decrease in HF hospitalization and cardiovascular mortality (primary endpoint) in patients with HF and reduced ejection fraction, whether treatment with sacubitril/valsartan reduced NT-proBNP below specific partition values more than enalapril, and whether the relationship between changes in NT-proBNP and changes in the primary endpoint were dependent on assigned treatment...
December 6, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27872743/the-slopes-remain-the-same-reply-to-wolfe-2016
#3
Árni Kristjánsson
Wolfe (2016) responds to my article (Kristjánsson, 2015), arguing among other things, that the differences in slope by response method in my data reflect speed accuracy trade-offs. But when reaction times and errors are combined in one score (inverse efficiency) to sidestep speed accuracy trade-offs, slope differences still remain. The problem that slopes, which are thought to measure search speed, differ by response type therefore remains.
November 2016: I-Perception
https://www.readbyqxmd.com/read/27868321/dementia-related-adverse-events-in-paradigm-hf-and-other-trials-in-heart-failure-with-reduced-ejection-fraction
#4
Jane A Cannon, Li Shen, Pardeep S Jhund, Søren L Kristensen, Lars Køber, Fabian Chen, Jianjian Gong, Martin P Lefkowitz, Jean L Rouleau, Victor C Shi, Karl Swedberg, Michael R Zile, Scott D Solomon, Milton Packer, John J V McMurray
AIMS: Inhibition of neprilysin, an enzyme degrading natriuretic and other vasoactive peptides, is beneficial in heart failure with reduced ejection fraction (HFrEF), as shown in PARADIGM-HF which compared the angiotensin receptor-neprilysin inhibitor (ARNI) sacubitril/valsartan with enalapril. As neprilysin is also one of many enzymes clearing amyloid-β peptides from the brain, there is a theoretical concern about the long-term effects of sacubitril/valsartan on cognition. Therefore, we have examined dementia-related adverse effects (AEs) in PARADIGM-HF and placed these findings in the context of other recently conducted HFrEF trials...
November 20, 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27861769/positive-feedback-between-chironomids-and-algae-creates-net-mutualism-between-benthic-primary-consumers-and-producers
#5
Cristina M Herren, Kyle C Webert, Michael D Drake, M Jake Vander Zanden, Árni Einarsson, Anthony R Ives, Claudio Gratton
The chironomids of Lake Mývatn show extreme population fluctuations that affect most aspects of the lake ecosystem. During periods of high chironomid densities, chironomid larvae comprise over 90% of aquatic secondary production. Here, we show that chironomid larvae substantially stimulate benthic gross primary production (GPP) and net primary production (NPP), despite consuming benthic algae. Benthic GPP in experimental mesocosms with 140,000 larvae/m(2) was 71% higher than in mesocosms with no larvae. Similarly, chlorophyll a concentrations in mesocosms increased significantly over the range of larval densities...
November 14, 2016: Ecology
https://www.readbyqxmd.com/read/27858191/focus-on-the-novel-cardiovascular-drug-lzc696-from-evidence-to-clinical-consideration
#6
L M Lin, Y Wu, M F Wu, J X Lin
LCZ696, a first-in-class angiotensin receptor neprilysin inhibitor (ARNI), is comprised of the angiotensin receptor blocker valsartan and the neprilysin inhibitor pro-drug sacubitril (AHU377). After oral administration, AHU377 is rapidly metabolized to the active neprilysin inhibitor LBQ657. LCZ696 exerts its effects of diuresis, natriuresis, vasodilation and aldosterone secretion inhibition through simultaneous renin-angiotensin-aldosterone system (RAAS) blockade and natriuretic peptides system (NPS) enhancement...
November 18, 2016: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/27858115/-the-new-esc-guidelines-for-acute-and-chronic-heart-failure-2016
#7
C U Oeing, C Tschöpe, B Pieske
The new guidelines for the diagnosis and treatment of acute and chronic heart failure (HF) were presented in May 2016 during the congress of the Heart Failure Association (HFA) of the European Society of Cardiology (ESC) in Florence. An important amendment affects the classification of HF which now differentiates between HF with preserved ejection fraction (HFpEF) and left ventricular EF (LVEF) > 50%, HF with reduced ejection fraction (HFrEF, LVEF < 40%) and the new entity HF with mid-range ejection fraction (HFmrEF, LVEF 40-49%)...
December 2016: Herz
https://www.readbyqxmd.com/read/27837397/from-arb-to-arni-in-cardiovascular-control
#8
REVIEW
Estrellita Uijl, Lodi C W Roksnoer, Ewout J Hoorn, A H Jan Danser
Coexistence of hypertension, diabetes mellitus and chronic kidney disease synergistically aggravates the risk of cardiovascular and renal morbidity and mortality. These high-risk, multi-morbid patient populations benefit less from currently available anti-hypertensive treatment. Simultaneous angiotensin II type 1 receptor blockade and neprilysin inhibition ('ARNI') with valsartan/sacubitril (LCZ696) might potentiate the beneficial effects of renin-angiotensin-aldosterone inhibition by reinforcing its endogenous counterbalance, the natriuretic peptide system...
December 2016: Current Hypertension Reports
https://www.readbyqxmd.com/read/27816537/serine-proteinases-from-bothrops-snake-venom-activates-pi3k-akt-mediated-angiogenesis
#9
Shreesha K Bhat, Manjunath B Joshi, Anwar Ullah, Rehana Masood, Setlur G Biligiri, Raghuvir K Arni, Kapaettu Satyamoorthy
The discovery of rapid acting and powerful angiogenic proteins are of significant interest in the treatment of various human disorders associated with insufficient angiogenesis such as ischemia, menorrhagia and delayed wound healing. Snake venoms consist of a mixture of bioactive proteins and polypeptides and are rich sources of pharmacologically important molecules. Serine proteinases are one of the abundant proteins present in Bothrops snake venoms and possess multiple biological functions including the regulation of the blood coagulation cascade...
December 15, 2016: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/27810289/gray-meat-in-the-atlantic-sea-scallop-placopecten-magellanicus-and-the-identification-of-a-known-pathogenic-scallop-apicomplexan
#10
Susan D Inglis, Árni Kristmundsson, Mark A Freeman, Megan Levesque, Kevin Stokesbury
Atlantic sea scallop (Placopecten magellanicus) meats are normally firm and creamy white. However, scallops with small, darkened and stringy adductor muscle (gray meat) episodically occur along the Eastern Seaboard, most recently in the rotational management areas of Georges Bank after extended fishing closures. These gray meat scallops are associated with reduced harvestable biomass and mass mortality events. We tested age, nutritional stress and disease as causative agents for this condition. Adult scallops of different shell heights (SH) ranging from (90-145mm) were collected from Georges Bank and analyzed for meat quality and the presence of pathogens using biochemical, histopathological and molecular methods...
November 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27808444/bacterial-and-arachnid-sphingomyelinases-d-comparison-of-biophysical-and-pathological-activities
#11
R B Mariutti, D Chaves-Moreira, L Vuitika, P I Caruso, M A Coronado, V A Azevedo, M T Murakami, S S Veiga, R K Arni
Sphingomyelinases D have only been identified in arachnid venoms, Corynebacteria, Arcanobacterium, Photobacterium and in the fungi Aspergillus and Coccidioides. The arachnid and bacterial enzymes share very low sequence identity and do not contain the HKD sequence motif characteristic of the phospholipase D superfamily, however, molecular modeling and circular dichroism of SMases D from L. intermedia and C. pseudotuberculosis indicate similar folds. The phospholipase, hemolytic and necrotic activities and mice vessel permeabilities were compared and both enzymes possess the ability to hydrolyze phospholipids and also promote similar pathological reactions in the host suggesting the existence of a common underlying mechanism in tissue disruption...
November 3, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27793942/a-novel-aziridine-based-bruton-s-tyrosine-kinase-inhibitor-induces-apoptosis-through-down-regulation-of-p65-rela-phosphorylation-on-serine-536-and-erk1-2-in-mantle-cell-lymphoma
#12
Nadezhda Romanchikova, Arnis Strods, Julija Strazdina, Boriss Strumfs, Peteris Trapencieris
BACKGROUND: Mantle cell lymphoma (MCL) is an aggressive non-Hodgkin's lymphoma characterized by hyperactive neoplastic B-cells and extended tumor cell survival. Bruton's tyrosine kinase (BTK), a crucial kinase in the B-cell antigen receptor signaling pathway, has emerged as a novel target of MCL therapy. A novel BTK-targeting inhibitor, JuSt-23F was prepared. MATERIALS AND METHODS: The WST-8 assay was used to determine cytotoxicity and half-maximal inhibitory concentration (IC50) values for JuSt-23F against the MCL cell lines Mino and Maver-1...
November 2016: Anticancer Research
https://www.readbyqxmd.com/read/27793542/role-of-serum-cytokines-in-acute-appendicitis-and-acute-mesenteric-lymphadenitis-among-children
#13
Astra Zviedre, Arnis Engelis, Peteris Tretjakovs, Antra Jurka, Irisa Zile, Aigars Petersons
BACKGROUND AND OBJECTIVE: The diagnostic role of serum cytokines depends on the etiology and pathogenesis of acute appendicitis (AA) and acute mesenteric lymphadenitis (AML). The aim of this study was to evaluate differences in cytokine levels between AA and AML. MATERIALS AND METHODS: Data of 7- to 18-year-old children were collected prospectively from October 2010 to October 2013. There were 31 patients with AA (AA group), 26 with AML (AML group), and 17 with elective non-inflammatory surgical disease (control group)...
2016: Medicina
https://www.readbyqxmd.com/read/27783544/evaluating-the-impact-of-sample-medication-on-subsequent-patient-adherence
#14
Janice L Pringle, Arnie Aldridge, Shannon M Kearney, Kim Grasso, John Radack, Susan Hogue, Chronis Manolis
BACKGROUND: Medication nonadherence is problematic throughout health care practice. Patient nonadherence is a result of several factors, such as financial issues, confusion about the medication, or concerns about possible side effects. Efforts to improve adherence have been implemented, but new strategies are needed to ensure that patients fill their medication prescriptions and adhere to their prescribed use. OBJECTIVE: To investigate whether providing patients with a free 30-day supply of medication at the point of care via a dispensing kiosk-a secure, computerized cabinet placed in the prescriber's office-that provides sample medication and educational materials had a measurable impact on adherence and health care cost...
November 2016: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/27780193/short-term-breast-cancer-survival-in-relation-to-ethnicity-stage-grade-and-receptor-status-national-cohort-study-in-england
#15
Henrik Møller, Katherine Henson, Margreet Lüchtenborg, John Broggio, Jackie Charman, Victoria H Coupland, Elizabeth Davies, Ruth H Jack, Richard Sullivan, Peter Vedsted, Kieran Horgan, Neil Pearce, Arnie Purushotham
BACKGROUND: In the re-organisation of cancer registration in England in 2012, a high priority was given to the recording of cancer stage and other prognostic clinical data items. METHODS: We extracted 86 852 breast cancer records for women resident in England and diagnosed during 2012-2013. Information on age, ethnicity, socio-economic status, comorbidity, tumour stage, grade, morphology and oestrogen, progesterone and HER2 receptor status was included. The two-year cumulative risk of death from any cause was estimated with the Kaplan-Meier method, and univariate and multivariate Cox proportional hazards regressions were used to estimate hazard ratios (HR) and their 95% confidence intervals (95% CI)...
November 22, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27773829/redescription-and-phylogenetic-position-of-myxobolus-eglefini-and-myxobolus-platessae-n-comb-myxosporea-parasites-in-the-cartilage-of-some-north-atlantic-marine-fishes-with-notes-on-the-phylogeny-and-classification-of-the-platysporina
#16
Egil Karlsbakk, Árni Kristmundsson, Marco Albano, Paul Brown, Mark A Freeman
Myxobolus 'aeglefini' Auerbach, 1906 was originally described from cranial cartilage of North sea haddock (Melanogrammus aeglefinus), but has subsequently been recorded from cartilaginous tissues of a range of other gadoid hosts, from pleuronectids and from lumpsucker (Cyclopterus lumpus) in the North Atlantic and from a zoarcid fish in the Japan Sea (Pacific). We obtained partial small-subunit rDNA sequences of Myxobolus 'aeglefini' from gadoids and pleuronectids from Norway and Iceland. The sequences from gadoids and pleuronectids represented two different genotypes, showing 98...
October 20, 2016: Parasitology International
https://www.readbyqxmd.com/read/27772921/immunohistochemical-expressions-of-p75-s100-pgp-9-5-and-c-kit-in-resected-bowel-of-hirchsprung-s-disease-and-correlation-with-postoperative-complication
#17
Effat Omar, Faizal Adhwan, Arni Talib, Zakaria Zahari
No abstract text is available yet for this article.
February 2016: Pathology
https://www.readbyqxmd.com/read/27754187/sp-04-2-lcz-696-a-new-paradigm-shift-for-the-treatment-of-heart-failure
#18
ByungSu Yoo
Heart failure (HF) represents a significant healthcare issue because of its ever-increasing prevalence, poor prognosis and complex pathophysiology. The cornerstone of modern drug therapy in chronic HF is the inhibition of neurohormonal activation that plays a crucial role in the pathophysiology of HF development and progression and, more specifically, of the renin-angiotensin-aldosterone system (RAAS) and the sympathetic nervous system. LCZ696 is a first-in-class, angiotensin receptor NEP inhibitor (ARNI) that consists of a supramolecular complex of a molecule of the ARB valsartan in combination with a molecule of the NEP inhibitor prodrug AHU377 (also known as sacubitril)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27754186/sp-04-1-the-role-of-natriuretic-peptides-in-the-pathogenesis-of-cardiovascular-diseases
#19
Zhanna Kobalava
The burden of cardiovascular diseases (CVD) in general and heart failure (HF) in particular continues to increase worldwide. CVD are major contributors to death and morbidity and recognized as important drivers of healthcare expenditure. Chronic overactivity of the renin-angiotensin-aldosterone system (RAAS) plays a key role in human hypertension and HF pathophysiology. RAAS is fundamental in the overall regulation of cardiovascular homeostasis through the actions of hormones, which regulate vascular tone, and specifically blood pressure through vasoconstriction and renal sodium and water retention...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27747488/angiotensin-neprilysin-inhibition-as-a-paradigm-for-all
#20
Muthiah Vaduganathan, Akshay S Desai
Composite angiotensin receptor-neprilysin inhibition (ARNi) represents a novel pharmacologic strategy for treatment of heart failure with reduced ejection fraction (HFrEF). In the PARADIGM-HF (Prospective comparison of ARNi with ACEi to Determine Impact on Global Mortality and Morbidity in Heart Failure) trial of 8399 subjects with HFrEF, treatment with the ARNi LCZ696 (sacubitril/valsartan) was associated with statistically important reductions in cardiovascular death, all-cause mortality, and the composite of cardiovascular death or heart failure hospitalization in comparison with enalapril...
November 2016: Current Cardiology Reports
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