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https://www.readbyqxmd.com/read/28448893/diabetes-status-modifies-the-association-between-carotid-intima-media-thickness-and-incident-heart-failure-the-atherosclerosis-risk-in-communities-study
#1
Valery S Effoe, Eric E McClendon, Carlos J Rodriguez, Lynne E Wagenknecht, Gregory W Evans, Patricia P Chang, Alain G Bertoni
AIMS: Increasing carotid intima-media thickness (CIMT) is associated with incident heart failure (HF). We investigated whether this association differs by diabetes status. METHODS: We characterized 13,590 Atherosclerosis Risk in Communities Study participants free of baseline HF into normal fasting glucose (NFG, glucose <100mg/dl), impaired fasting glucose (IFG, glucose 100-125mg/dl), and type 2 diabetes (T2D, glucose ≥126mg/dl, self-report, or use of diabetes drugs)...
April 13, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28446162/prevalence-and-risk-factors-for-non-alcoholic-fatty-liver-in-children-and-youth-with-obesity
#2
Carolina Jimenez-Rivera, Stasia Hadjiyannakis, Jorge Davila, Julie Hurteau, Mary Aglipay, Nick Barrowman, Kristi B Adamo
BACKGROUND: Non- Alcoholic Fatty Liver (NAFL) is a spectrum of liver diseases (LD) that ranges from benign fatty infiltration of the liver to cirrhosis and hepatic failure. Hepatic ultrasound (US) and serum alanine aminotransferase (ALT) are often used as markers of NAFL. Our aim is to describe prevalence of NAFL and associated findings on ultrasound (US) and biochemical parameters in a population of children and adolescents with obesity at the Children's Hospital of Eastern Ontario. METHODS: Children with Obesity (BMI >95th percentile) ages 8-17 years presenting to the Endocrinology and Gastroenterology clinics, without underlying LD were prospectively recruited from 2009 to 2012...
April 26, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28440522/-nutrition-management-in-obese-patients-with-type-2-diabetes-mellitus-after-laparoscopic-sleeve-gastrectomy
#3
Weihong Tang, Yuhua Chen, Meizhen Pan, Lihua Chen, Lele Zhang, Tingfeng Wang, Xiong Zhang, Peng Zhang, Chengzhu Zheng, Bo Yu
OBJECTIVE: To explore the value of nutrition management in obese patients with type 2 diabetes mellitus(T2DM) after laparoscopic sleeve gastrectomy(LSG). METHODS: Clinical data of 22 obese T2DM patients undergoing LSG from March 2013 to July 2015 in Fudan University Pudong Medical Center were collected. All the patients strictly followed the specialized instruction by nutritionists: diabetic and low calorie diet 3347.2 to 5020.8 kJ (800 to 1200 kcal) per day before the operation; low calorie liquid diet 2510...
April 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28438401/a-control-system-for-ultrasound-devices-utilized-for-inactivating-e-coli-in-wastewater
#4
H Ohrdes, I Ille, J Twiefel, J Wallaschek, R Nogueira, K-H Rosenwinkel
Sonochemical processes applied to wastewater treatment have an influence on the behavior of ultrasonic systems. This is especially due to the load characteristic of the sonochemical process itself and the temperature increase caused by internal damping within the converter. Hence, a controlling device is needed to guarantee the operation in resonance and to keep the vibration amplitude constant. This paper presents a digital control system for the operation of weak to strong damped ultrasonic devices and its application for inactivating Escherichia coli in wastewater...
April 16, 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28436918/an-integrated-and-highly-sensitive-ultrafast-acoustoelectric-imaging-system-for-biomedical-applications
#5
Beatrice Berthon, Pierre-Marc Dansette, Mickael Tanter, Mathieu Pernot, Jean Provost
PURPOSE: Direct imaging of cardiac electrical activation is crucial to better understand and diagnose diseases linked to arrhythmias. This work presents an Ultrafast Acoustoelectric Imaging (UAI) system for direct and non-invasive ultrafast mapping of propagating current densities. MATERIALS AND METHODS: Acoustoelectric imaging is based on the acoustoelectric effect, the modulation of the medium's electrical impedance by a propagating ultrasonic wave. UAI triggers this effect with plane wave emissions to image current densities...
April 24, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28431106/ultrasound-cut-off-values-for-intima-media-thickness-of-temporal-facial-and-axillary-arteries-in-giant-cell-arteritis
#6
Valentin S Schäfer, Aaron Juche, Sofia Ramiro, Andreas Krause, Wolfgang A Schmidt
Objective.: To evaluate the intima-media thickness (IMT) of arteries involved in GCA for determining cut-off values. Methods.: Forty newly diagnosed GCA patients in a fast-track GCA clinic and 40 age- and sex-matched controls were included. IMT measurement was performed at or within 24 h after diagnosis. The common superficial temporal arteries with their frontal and parietal branches and the facial arteries were bilaterally examined with a 10-22 MHz probe and the axillary artery with a 6-18 MHz probe...
April 20, 2017: Rheumatology
https://www.readbyqxmd.com/read/28427680/numerical-modelling-of-ultrasonic-waves-in-a-bubbly-newtonian-liquid-using-a-high-order-acoustic-cavitation-model
#7
G S Bruno Lebon, I Tzanakis, G Djambazov, K Pericleous, D G Eskin
To address difficulties in treating large volumes of liquid metal with ultrasound, a fundamental study of acoustic cavitation in liquid aluminium, expressed in an experimentally validated numerical model, is presented in this paper. To improve the understanding of the cavitation process, a non-linear acoustic model is validated against reference water pressure measurements from acoustic waves produced by an immersed horn. A high-order method is used to discretize the wave equation in both space and time. These discretized equations are coupled to the Rayleigh-Plesset equation using two different time scales to couple the bubble and flow scales, resulting in a stable, fast, and reasonably accurate method for the prediction of acoustic pressures in cavitating liquids...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427675/use-of-pva-%C3%AE-mno2-stearic-acid-nanocomposite-films-prepared-by-sonochemical-method-as-a-potential-sorbent-for-adsorption-of-cd-ii-ion-from-aqueous-solution
#8
Shadpour Mallakpour, Forough Motirasoul
Alpha manganese dioxide (α-MnO2) nanorods have been covalently functionalized with stearic acid by solvothermal method. The α-MnO2-stearic acid nanorods were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy and transmission electron microscopy. The amount of stearic acid grafted onto α-MnO2 surface was determined about 41wt% by thermogravimetric analysis. The α-MnO2-stearic acid nanorods was used as nanofiller for the preparation of poly(vinyl alcohol) (PVA) nanocomposites (NCs)...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28426788/association-between-hemoglobin-glycation-index-with-insulin-resistance-and-carotid-atherosclerosis-in-non-diabetic-individuals
#9
Maria Adelaide Marini, Teresa Vanessa Fiorentino, Elena Succurro, Elisabetta Pedace, Francesco Andreozzi, Angela Sciacqua, Francesco Perticone, Giorgio Sesti
Hemoglobin glycation index (HGI), defined as the difference between the observed HbA1c value and the value of HbA1c predicted from plasma glucose levels, represents a measure of the degree of non-enzymatic glycation of hemoglobin and it has been found to be positively associated with micro- and macro-vascular complications in subjects with type 2 diabetes. To investigate the pathophysiological abnormalities responsible for the increased cardiovascular risk of patients with higher HGI, we evaluated the association of HGI with cardio-metabolic characteristics in nondiabetic offspring of type 2 diabetic individuals...
2017: PloS One
https://www.readbyqxmd.com/read/28426149/click-chemistry-mediated-rapid-microbubble-catching-for-acute-thrombus-ultrasound-molecular-imaging
#10
Tuantuan Wang, Chuxiao Yuan, Bingyang Dai, Yang Liu, Mingxi Li, Zhenqiang Feng, Qing Jiang, Zhihong Xu, Ningwei Zhao, Ning Gu, Fang Yang
Bioorthogonal coupling chemistry has been studied as one significant advantage for molecular imaging as it offers rapid, efficient, and strong binding, which may also benefit in stability, production, and chemical conjugation. The inverse-electron-demand Diels-Alder reaction between s-tetrazine and trans-cyclooctene (TCO) is an example of a highly selective and rapid bioorthogonal coupling reaction to be used successfully to prepare targeted molecular imaging probes. Herein, based on a two-step pretargeting bioorthogonal chemistry, we report a fast and reliable highly sensitive approach to achieve activated-platelet-specific CD62p targeted thrombus ultrasound molecular imaging...
April 20, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28424505/usefulness-of-serum-fetuin-a-level-as-a-marker-of-erectile-dysfunction
#11
W Kandeel, W El-Shaer, A Sebaey, A A Abou-Taleb, A Fathy, B Elmohamady, A I Mansour
This study aimed to evaluate the correlation between serum levels of fetuin-A and the presence and severity of erectile dysfunction (ED) in Egyptian population. The study was performed on 60 ED patients and 20 age-matched healthy controls. A comprehensive medical history and complete physical examination were obtained and performed in all participants. ED and its severity were assessed via International Index of Erectile Function (IIEF-5). Doppler ultrasound, fasting blood glucose level, complete lipid profile, serum total testosterone (TT) and serum fetuin-A were performed...
April 20, 2017: International Journal of Impotence Research
https://www.readbyqxmd.com/read/28422656/fast-plane-wave-2-d-vector-flow-imaging-using-transverse-oscillation-and-directional-beamforming
#12
Jonas Jensen, Carlos A Villagomez-Hoyos, Matthias B Stuart, Caroline Ewertsen, Michael R Nielsen, Jorgen Jensen
Several techniques can estimate the 2-D velocity vector in ultrasound. Directional beamforming (DB) estimates blood flow velocities with a higher precision and accuracy than transverse oscillation (TO), but at the cost of a high beamforming load when estimating the flow angle. In this paper, it is proposed to use TO to estimate an initial flow angle, which is then refined in a DB step. Velocity magnitude is estimated along the flow direction using cross-correlation. It is shown that the suggested TO-DB method can improve the performance of velocity estimates compared to TO, and with a beamforming load, which is 4...
April 12, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28416362/in-situ-targeted-activation-of-an-anticancer-agent-using-ultrasound-triggered-release-of-composite-droplets
#13
Marine Bezagu, Jonathan Clarhaut, Brigitte Renoux, Fabrice Monti, Mickael Tanter, Patrick Tabeling, Janine Cossy, Olivier Couture, Sebastien Papot, Stellios Arseniyadis
The efficiency of a drug is usually highly dependent on the way it is administered or delivered. As such, targeted-therapy, which requires conceiving drug-delivery vehicles that will change their state from a relatively stable structure with a very slow leak-rate to an unstable structure with a fast release, clearly improves the pharmacokinetics, the absorption, the distribution, the metabolism and the therapeutic index of a given drug. In this context, we have developed a particularly effective double stimuli-responsive drug-delivery method allowing an ultrasound-induced release of a monomethylauristatin E-glucuronide prodrug and its subsequent activation by a β-glucuronidase...
March 28, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28410537/prediction-of-intra-abdominal-adhesions-using-the-visceral-slide-test-a-prospective-observational-study
#14
Maria Lee, Hee Seung Kim, Hyun Hoon Chung, Jae-Weon Kim, Noh Hyun Park, Yong Sang Song
OBJECTIVE: The goal of this study was to determine whether the visceral slide test is an effective screening method for the prediction of intra-abdominal adhesions. STUDY DESIGN: A prospective, observational study was conducted assessing a cohort of women undergoing benign gynaecologic surgery between April 2015 and June 2015. At the patient's preoperative visit, they underwent the ultrasound-based visceral slide test in five zones of the abdomen. The ultrasound assessments were validated against direct visualization during surgery...
April 6, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28395890/frequency-of-nonalcoholic-fatty-liver-disease-and-subclinical-atherosclerosis-among-young-mexican-americans
#15
Clarence Gill, Kristina P Vatcheva, Jen-Jung Pan, Beverly Smulevitz, David D McPherson, Michael Fallon, Joseph B McCormick, Susan P Fisher-Hoch, Susan T Laing
Nonalcoholic fatty liver disease (NAFLD) is considered as the hepatic manifestation of the metabolic syndrome, whose criteria are risk factors for atherosclerotic cardiovascular disease. We aimed to evaluate the prevalence of NAFLD, its association with subclinical atherosclerosis, and factors that may account for this association in Mexican Americans. In a population-based cross-sectional sample drawn from the Cameron County Hispanic Cohort in Texas, carotid intima media thickness (cIMT), an indicator of subclinical atherosclerosis, was measured...
March 16, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28390284/well-balanced-system-for-coronary-calcium-detection-and-volume-measurement-in-a-low-resolution-intravascular-ultrasound-videos
#16
Sumit K Banchhor, Narendra D Londhe, Tadashi Araki, Luca Saba, Petia Radeva, John R Laird, Jasjit S Suri
BACKGROUND: Accurate and fast quantitative assessment of calcium volume is required during the planning of percutaneous coronary interventions procedures. Low resolution in intravascular ultrasound (IVUS) coronary videos poses a threat to calcium detection causing over-estimation in volume measurement. We introduce a correction block that counter-balances the bias introduced during the calcium detection process. METHOD: Nineteen patients image dataset (around 40,090 frames), IRB approved, were collected using 40MHz IVUS catheter (Atlantis® SR Pro, Boston Scientific®, pullback speed of 0...
March 30, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28383828/associations-between-arterial-structure-and-function-and-serum-levels-of-liver-enzymes-in-obese-adolescents
#17
Elim Man, Pik-To Cheung, Yiu-Fai Cheung
AIM: To determine the structural and functional alterations of systemic arteries in obese adolescents and their relationships with adiposity, metabolic and lipid profile, and serum liver enzyme levels. METHODS: Carotid intima-media thickness (IMT), carotid stiffness index, and brachial-ankle pulse wave velocity (baPWV) were measured in 56 obese adolescents and 58 lean controls. Obese adolescents had additional liver ultrasound and determination of fasting blood indices of glucose metabolism and lipid profile, and serum levels of liver enzymes...
April 6, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/28377202/ureteroscopy-assisted-percutaneous-kidney-access-made-easy-first-clinical-experience-with-a-novel-navigation-system-using-electromagnetic-guidance-ideal-stage-1
#18
Estevao Lima, Pedro L Rodrigues, Paulo Mota, Nuno Carvalho, Emanuel Dias, Jorge Correia-Pinto, Riccardo Autorino, João L Vilaça
BACKGROUND: Puncture of the renal collecting system represents a challenging step in percutaneous nephrolithotomy (PCNL). Limitations related to the use of standard fluoroscopic-based and ultrasound-based maneuvers have been recognized. OBJECTIVES: To describe the technique and early clinical outcomes of a novel navigation system for percutaneous kidney access. DESIGN, SETTING, AND PARTICIPANTS: This was a proof-of-concept study (IDEAL phase 1) conducted at a single academic center...
April 1, 2017: European Urology
https://www.readbyqxmd.com/read/28373642/fast-preparation-of-rg-i-enriched-ultra-low-molecular-weight-pectin-by-an-ultrasound-accelerated-fenton-process
#19
Zijian Zhi, Jianle Chen, Shan Li, Wenjun Wang, Rui Huang, Donghong Liu, Tian Ding, Robert John Linhardt, Shiguo Chen, Xingqian Ye
Pectin, a natural polysaccharide found in the cell wall of most higher plant such as citrus, has drawn much attention due to its potential beneficial role in facilitating the treatment of many diseases like cancer, hyper cholesterol and diabetes. However, the broad application of pectin faces great limitations as the large molecular size of pectin severely prevents its bioavailability in vivo. In this study, we report an effective and highly convenient approach to degrade natural pectin into lower molecular pectin...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28372842/comparison-of-green-sample-preparation-techniques-in-the-analysis-of-pyrethrins-and-pyrethroids-in-baby-food-by-liquid-chromatography-tandem-mass-spectrometry
#20
Mateus Henrique Petrarca, Alexander Ccanccapa-Cartagena, Ana Masiá, Helena Teixeira Godoy, Yolanda Picó
A new selective and sensitive liquid chromatography triple quadrupole mass spectrometry method was developed for simultaneous analysis of natural pyrethrins and synthetic pyrethroids residues in baby food. In this study, two sample preparation methods based on ultrasound-assisted dispersive liquid-liquid microextraction (UA-DLLME) and salting-out assisted liquid-liquid extraction (SALLE) were optimized, and then, compared regarding the performance criteria. Appropriate linearity in solvent and matrix-based calibrations, and suitable recoveries (75-120%) and precision (RSD values≤16%) were achieved for selected analytes by any of the sample preparation procedures...
March 24, 2017: Journal of Chromatography. A
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