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https://www.readbyqxmd.com/read/29150259/reduction-of-co2-emission-by-incam-model-in-malaysia-biomass-power-plants-during-the-year-2016
#1
Nor Aishah Saidina Amin, Amin Talebian-Kiakalaieh
As the world's second largest palm oil producer and exporter, Malaysia could capitalize on its oil palm biomass waste for power generation. The emission factors from this renewable energy source are far lower than that of fossil fuels. This study applies an integrated carbon accounting and mitigation (INCAM) model to calculate the amount of CO2 emissions from two biomass thermal power plants. The CO2 emissions released from biomass plants utilizing empty fruit bunch (EFB) and palm oil mill effluent (POME), as alternative fuels for powering steam and gas turbines, were determined using the INCAM model...
November 15, 2017: Waste Management
https://www.readbyqxmd.com/read/29149718/coronary-risk-assessment-at-x-ray-dose-equivalent-ungated-chest-ct-results-of-a-multi-reader-study
#2
Michael Messerli, Lukas Hechelhammer, Sebastian Leschka, René Warschkow, Simon Wildermuth, Ralf W Bauer
OBJECTIVES: To determine the value of ultra-low dose chest CT with tin filtration for ordinal coronary artery calcium (CAC) risk scoring. METHODS: 50 patients were prospectively included and underwent clinical standard dose chest CT (1.8±0.7mSv) and ultra-low dose CT (0.13±0.01mSv). Four radiologists estimated presence and extent of CAC. RESULTS: Weighted kappa values for CAC were 0.76-0.97 in standard dose and 0.75-0.95 in ultra-low dose CT (p<0...
October 25, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29146023/longitudinal-associations-of-pericardial-and-intrathoracic-fat-with-progression-of-coronary-artery-calcium-from-the-framingham-heart-study
#3
Jane J Lee, Alison Pedley, Udo Hoffmann, Joseph M Massaro, Christopher J O'Donnell, Emelia J Benjamin, Michelle T Long
Cross-sectional studies have shown that pericardial fat is associated with atherosclerotic burden above and beyond generalized and central adiposity. Whether pericardial fat is longitudinally associated with coronary artery calcium (CAC) has not been firmly established. We examined the associations between cardiac ectopic fat including pericardial and intrathoracic fat with CAC progression and incidence in a community-based study setting. Study participants were from the Framingham Heart Study Offspring and Third Generation Cohorts who underwent multidetector computed tomography at 2 consecutive examinations (2002 to 2005 and 2008 to 2011) for the assessment of CAC...
October 19, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29145946/predicting-subclinical-atherosclerosis-in-low-risk%C3%A2-individuals-ideal-cardiovascular-health-score-and-fuster-bewat-score
#4
Juan Miguel Fernández-Alvira, Valentín Fuster, Stuart Pocock, Javier Sanz, Leticia Fernández-Friera, Martín Laclaustra, Rodrigo Fernández-Jiménez, José Mendiguren, Antonio Fernández-Ortiz, Borja Ibáñez, Héctor Bueno
BACKGROUND: The ideal cardiovascular health score (ICHS) is recommended for use in primary prevention. Simpler tools not requiring laboratory tests, such as the Fuster-BEWAT (blood pressure [B], exercise [E], weight [W], alimentation [A], and tobacco [T]) score (FBS), are also available. OBJECTIVES: The purpose of this study was to compare the effectiveness of ICHS and FBS in predicting the presence and extent of subclinical atherosclerosis. METHODS: A total of 3,983 participants 40 to 54 years of age were enrolled in the PESA (Progression of Early Subclinical Atherosclerosis) cohort...
November 14, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29145895/comparative-analysis-of-high-sensitivity-cardiac-troponin-i-and-t-for-their-association-with-coronary-computed-tomography-assessed-calcium-scoring-represented-by-the-agatston-score
#5
Jonas Rusnak, Michael Behnes, Thomas Henzler, Nadine Reckord, Nils Vogler, Mathias Meyer, Ursula Hoffmann, Michele Natale, Julia Hoffmann, Sonja Hamed, Kathrin Weidner, Siegfried Lang, Agnibh Mukherji, Holger Haubenreisser, Stefan O Schoenberg, Martin Borggrefe, Thomas Bertsch, Ibrahim Akin
BACKGROUND: This study evaluates the association between high-sensitivity cardiac troponin I (hs-cTnI) and T (hs-cTnT) and coronary calcium concentration (CAC) detected by coronary computed tomography (CCT) and evaluated with the Agatston score in patients with suspected coronary artery disease (CAD). METHODS: Patients undergoing CCT during routine clinical care were enrolled prospectively. CCT was indicated for patients with a low to intermediate pretest probability for CAD...
November 16, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/29145770/camptothecin-prodrug-nanomicelle-based-on-a-boronate-ester-linked-diblock-copolymer-as-the-carrier-of-doxorubicin-with-enhanced-cellular-uptake
#6
Ya Gao, Yi Xiao, Shiyuan Liu, Jiahui Yu
A novel pH-sensitive polymeric prodrug of camptothecin (CPT) by polymerizing γ-camptothecin-glutamate N-carboxyanhydride (Glu (CPT)-NCA) on boronate ester-linked poly (ethyleneglycol) (PEG) directly via the amine-initiated ring open polymerization (ROP) has been developed. The resulting amphiphilic prodrug (mPEG-BC-PGluCPT) could self-assemble into nanoparticles and encapsulate doxorubicin (Dox) simultaneously in aqueous solution for dual-drug delivery. The formation of polymeric prodrug micelles (mPEG-BC@PGluCPT) was confirmed by the measurements of critical aggregation concentration (CAC), particle size, and morphology observations...
November 17, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/29142489/correlation-between-osteoprotegerin-serum-level-and-coronary-calcification-using-coronary-artery-calcium-score-in-patient-with-moderate-severe-cardiovascular-risk-factor
#7
J Nugroho, Widorini Widorini
Coronary artery calcification is a part of atherosclerosis process associated with coronary heart disease. Recently, coronary artery calcification assessment using computed tomography (CT) is still the best noninvasive imaging with high sensitivity and specificity. Osteoprotegerin (OPG) is one of vascular calcification marker that through its role to bind receptor activator of nuclear factor-κβ ligand and inhibit osteoclastogenesis is suspected of playing a role for coronary calcification in atherosclerosis process...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29142010/value-of-progression-of-coronary-artery-calcification-for-risk-prediction-of-coronary-and-cardiovascular-events-result-of-the-heinz-nixdorf-recall-hnr-study
#8
Nils Lehmann, Raimund A Erbel, Amir A Mahabadi, Michael Rauwolf, Stefan Möhlenkamp, Susanne Moebus, Hagen Kälsch, Thomas Budde, Axel Schmermund, Andreas Stang, Dagmar Führer-Sakel, Christian Weimar, Ulla Roggenbuck, Nico Dragano, Karl-Heinz Jöckel
Background -Computed tomography (CT) allows estimation of coronary artery calcium (CAC) progression. We evaluated several progression algorithms in our unselected, population-based cohort for risk prediction of coronary and cardiovascular (CV) events. Methods -In 3281 participants (45-74 years), free from CV disease until the 2(nd) visit, risk factors and CTs at baseline (b) and after a mean of 5.1 years (5y) were measured. Hard coronary and cardiovascular events as well as total CV events including revascularization were recorded during a follow-up time of 7...
November 15, 2017: Circulation
https://www.readbyqxmd.com/read/29140808/randomized-trial-evaluating-the-effect-of-aged-garlic-extract-with-supplements-versus-placebo-on-adipose-tissue-surrogates-for-coronary-atherosclerosis-progression
#9
Irfan Zeb, Naser Ahmadi, Ferdinand Flores, Matthew J Budoff
AIMS: Increased epicardial adipose tissue (EAT), pericardial adipose tissue (PAT), periaortic adipose tissue (PaAT), and subcutaneous adipose tissue (SAT) are mediators of metabolic risk, and are associated with the severity of coronary artery calcium (CAC). Aged garlic extract (AGE) has been shown to reduce the progression of coronary atherosclerosis. This study evaluates the effect of AGE with supplements (AGE+S) on EAT, PAT, SAT, and PaAT. METHODS: Sixty asymptomatic participants participated in a randomized trial evaluating the effect of AGE+S versus placebo on coronary atherosclerosis progression, and underwent CAC at baseline and after 12 months of treatment...
November 14, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/29139033/relationship-between-airflow-obstruction-and-coronary-atherosclerosis-in-asymptomatic-individuals-evaluation-by-coronary-ct-angiography
#10
Jin-Jin Kim, Dong-Bin Kim, Sung-Won Jang, Eun Joo Cho, Kiyuk Chang, Sang Hong Baek, Ho-Joong Youn, Wook Sung Chung, Ki-Bae Seung, Tai-Ho Rho, Jung Im Jung, Byung-Hee Hwang
Airflow obstruction is associated with increased cardiovascular morbidity and mortality. However, the causal mechanisms linking airflow obstruction with higher incidence of cardiovascular events remain elusive. We evaluated the relationship between airflow obstruction, a key feature of chronic obstructive pulmonary disease (COPD), and prevalence, extent, and severity of coronary atherosclerosis in a large cohort of asymptomatic subjects. Participants were recruited from those undergoing spirometry and coronary computed tomography angiography (CCTA) as part of a general health evaluation from March 2009 to February 2011...
November 14, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29137107/effect-of-lanthanum-carbonate-on-coronary-artery-calcification-and-bone-mineral-density-in-maintenance-hemodialysis-patients-with-diabetes-complicated-with-adynamic-bone-disease-a-prospective-pilot-study
#11
Chunhua Zhang, Shixiang Wang, Sumei Zhao, Xiaodong Zhang
BACKGROUND: The incidence of adynamic bone disease (ABD) is increasing. Coronary artery calcification (CAC) may be severe in patients with ABD on maintenance hemodialysis (MHD). The aim of this study was to evaluate the effect of lanthanum carbonate (LC) on CAC and bone mineral density (BMD) in MHD patients with diabetes complicated with ABD. METHODS: A total of 92 MHD cases were divided into the calcium carbonate (CC) and LC groups. Primary outcome measure was the changes in the degree of CAC score (CACS) and BMD in forearm from baseline to 12 months...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29132034/impact-of-flow-mediated-dilatation-and-coronary-calcification-in-providing-complementary-information-on-the-severity-of-coronary-artery-disease
#12
Kentaro Arakawa, Mutsuki Ohno, Mutsuo Horii, Tomoaki Ishigami, Kazuo Kimura, Kouichi Tamura
BACKGROUND AND AIMS: Endothelial dysfunction and coronary artery calcification (CAC) may represent two distinct and separate processes in the development of coronary atherosclerosis. However, the interaction between these factors in determining the development of coronary artery disease (CAD) is uncertain. METHODS: Brachial artery flow-mediated dilatation (FMD) was measured by high-resolution ultrasound before coronary angiography, in 156 patients undergoing coronary CT angiography on suspicion of CAD (M/F 100/56, age 67 ± 11yrs)...
November 3, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29121752/identification-of-coronary-artery-calcification-can-optimize-risk-stratification-in-patients-with-acute-chest-pain
#13
Daniel O Bittner, Richard A P Takx, Pedro V Staziaki, Sumbal Janjua, Tomas G Neilan, Nandini M Meyersohn, Michael T Lu, Anand M Prabhakar, John T Nagurney, Udo Hoffmann, Brian B Ghoshhajra
BACKGROUND: The number of patients presenting to the emergency department (ED) with suspected acute coronary syndrome (ACS) is substantial. We tested whether identification of coronary artery calcium (CAC) can improve the negative predictive value (NPV) of clinical risk assessment for ACS in patients with acute chest pain. METHODS AND RESULTS: We included 826 consecutive patients (mean age: 53±11years; 42% female) without known coronary artery disease (CAD) or initially elevated serum biomarkers, whom underwent non-contrast CT, to assess the CAC score, and CT angiography (CTA), to detect coronary stenosis...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29118767/long-term-progression-of-coronary-artery-calcification-is-independent-of-classical-risk-factors-c-reactive-protein-and-parathyroid-hormone-in-renal-transplant-patients
#14
Sibel Gulcicek, Carmine Zoccali, Deniz Çebi Olgun, Giovanni Tripepi, Selma Alagoz, Serkan Feyyaz Yalın, Sinan Trabulus, Mehmet R Altiparmak, Nurhan Seyahi
Aims: Compared to the general population, mortality is significantly increased in renal transplant recipients. In the general population, coronary artery calcification (CAC) and its evolution over time are associated with cardiovascular and all-cause mortality, and the study of this biomarker could provide useful information for describing the long-term progression of coronary heart disease in renal transplant recipients. Methods: We followed up a cohort of 113 renal transplant patients by performing three multi-detector computed tomography studies over 83...
October 2017: Cardiorenal Medicine
https://www.readbyqxmd.com/read/29118558/cap-assisted-colonoscopy-versus-standard-colonoscopy-is-the-cap-beneficial-a-meta-analysis-of-randomized-controlled-trials
#15
Fazia A Mir, Christine Boumitri, Imran Ashraf, Michelle L Matteson-Kome, Douglas L Nguyen, Srinivas R Puli, Matthew L Bechtold
Background: In an effort to improve visualization during colonoscopy, a transparent plastic cap or hood may be placed on the end of the colonoscope. Cap-assisted colonoscopy (CAC) has been studied and is thought to improve polyp detection. Numerous studies have been conducted comparing pertinent clinical outcomes between CAC and standard colonoscopy (SC) with inconsistent results. Methods: Numerous databases were searched in November 2016. Only randomized controlled trials (RCTs) involving adult subjects that compared CAC to SC were included...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/29117643/advanced-electrocardiogram-ecg-analysis-in-the-amitriptyline-poisoned-pig-treated-with-activated-charcoal-hemoperfusion-cac-hp
#16
Tejs Jansen, Lotte C G Hoegberg, Thomas Eriksen, Christian Haarmark, Kim Dalhoff, Bo Belhage
Coated Activated Charcoal Hemoperfusion (CAC-HP) does not reduce the plasma concentration in amitriptyline (AT)-poisoned pigs. The aim of this non-blinded, randomised, controlled animal trial was to determine if CAC-HP reduces the pathological ECG changes caused by AT poisoning. Fourteen female Danish Land Race pigs (mean weight 27.7 kg, range 20-35 kg (CAC-HP) and 24.4 kg, range 18-30 kg (control group, CG), n=7 in each group were included. After randomisation, the pigs were anaesthetised and intravenously poisoned with AT...
November 8, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29117273/coronary-artery-calcium-score-for-long-term-risk-classification-in-individuals-with-type-2-diabetes-and-metabolic-syndrome-from-the-multi-ethnic-study-of-atherosclerosis
#17
Shaista Malik, Yanglu Zhao, Matthew Budoff, Khurram Nasir, Roger S Blumenthal, Alain G Bertoni, Nathan D Wong
Importance: Although the risk of type 2 diabetes is considered to be equivalent to coronary heart disease (CHD) risk, there is considerable heterogeneity among individuals for CHD and atherosclerotic cardiovascular disease (ASCVD) risk. It is not known whether coronary artery calcium (CAC) assessment at baseline in individuals with established metabolic syndrome (MetS) or diabetes identifies CHD and ASCVD prognostic indicators during a long follow-up period. Objective: To compare improvement in long-term prognostication of incident CHD and ASCVD using CAC scores among those with diabetes, MetS, or neither condition...
November 8, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29104300/anion-capture-and-exchange-by-functional-coatings-new-routes-to-mitigate-steel-corrosion-in-concrete-infrastructure
#18
Gabriel Falzone, Magdalena Balonis, Dale Bentz, Scott Jones, Gaurav Sant
Chloride-induced corrosion is a major cause of degradation of reinforced concrete infrastructure. While the binding of chloride ions (Cl(-)) by cementitious phases is known to delay corrosion, this approach has not been systematically exploited as a mechanism to increase structural service life. Recently, Falzone et al. [Cement and Concrete Research72, 54-68 (2015)] proposed calcium aluminate cement (CAC) formulations containing NO3-AFm to serve as anion exchange coatings that are capable of binding large quantities of Cl(-) ions, while simultaneously releasing corrosion-inhibiting NO3(-) species...
November 2017: Cem Concr Res
https://www.readbyqxmd.com/read/29100062/thoracic-extra-coronary-calcification-for-the-prediction-of-stroke-the%C3%A2-multi-ethnic-study-of-atherosclerosis
#19
Sina Kianoush, Mahmoud Al Rifai, Miguel Cainzos-Achirica, Mouaz H Al-Mallah, Geoffrey H Tison, Joseph Yeboah, Michael D Miedema, Matthew A Allison, Nathan D Wong, Andrew P DeFilippis, William Longstreth, Khurram Nasir, Matthew J Budoff, Kunihiro Matsushita, Michael J Blaha
BACKGROUND AND AIMS: Atherosclerosis is a systemic disease. We examined whether the cumulative burden of thoracic extra-coronary calcification (ECC) improves prediction of stroke, transient ischemic attack (TIA), and stroke mortality beyond traditional risk factors and coronary artery calcium (CAC). METHODS: We followed a total of 6805 participants (mean age 62.1 ± 10.2 years, 47.2% male) from the Multi-Ethnic Study of Atherosclerosis (MESA) over a median of 12...
October 7, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29096884/comparison-of-the-coronary-artery-calcium-score-and-number-of-calcified-coronary-plaques-for-predicting-patient-mortality-risk
#20
Yoav Arnson, Alan Rozanski, Heidi Gransar, John D Friedman, Sean W Hayes, Louise E Thomson, Balaji Tamarappoo, Piotr Slomka, Frances Wang, Guido Germano, Damini Dey, Daniel S Berman
Multiple coronary artery calcium (CAC) parameters have recently been proposed to improve risk prediction in patients with intermediate clinical risk based on CAC scoring, but outcome data that assess these variables are relatively sparse. We analyzed data from 11,633 consecutive asymptomatic patients undergoing CAC scanning that were followed for 8.8 ± 3.5 years for all-cause mortality (ACM). The patients who had coronary artery calcification were grouped by the number of calcified coronary plaques: 0, 1 to 5, 6 to 20, and >20 plaques...
September 18, 2017: American Journal of Cardiology
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