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https://www.readbyqxmd.com/read/28098121/perspectives-on-hypertension-outcomes-after-single-stage-clearance-of-a-complete-staghorn-renal-calculus
#1
Ranjit Chaudhary, Kulwant Singh, Chirag S Dausage, Nidhi Jain
A 55-year-old male presented, in June 2013, with left flank pain. Investigations revealed a complete staghorn stone. He had undergone two sittings of extracorporeal shock wave lithotripsy (ESWL) in 2008 for left renal stone. One year subsequent to this, he was diagnosed with hypertension and diabetes. The management of complete staghorn stones in a single sitting is a difficult proposition. Percutaneous nephrolithotomy (PCNL) is the gold standard to manage such stones. The patient was subjected to PCNL, and complete clearance was achieved in one sitting...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28073274/quantum-dots-embedded-in-graphene-nanoribbons-by-chemical-substitution
#2
Eduard Carbonell-Sanromà, Pedro Brandimarte, Richard Balog, Martina Corso, Shigeki Kawai, Aran Garcia-Lekue, Shohei Saito, Shigehiro Yamaguchi, Ernst Meyer, Daniel Sánchez-Portal, Jose Ignacio Pascual
Bottom-up chemical reactions of selected molecular precursors on a gold surface can produce high quality graphene nanoribbons (GNRs). Here, we report on the formation of quantum dots embedded in an armchair GNR by substitutional inclusion of pairs of boron atoms into the GNR backbone. The boron inclusion is achieved through the addition of a small amount of boron substituted precursors during the formation of pristine GNRs. In the pristine region between two boron pairs, the nanoribbons show a discretization of their valence band into confined modes compatible with a Fabry-Perot resonator...
January 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28065370/a-new-qualitative-pattern-classification-of-shear-wave-elastograghy-for-solid-breast-mass-evaluation
#3
Rui Cong, Jing Li, Song Guo
OBJECTIVES: To examine the efficacy of qualitative shear wave elastography (SWE) in the classification and evaluation of solid breast masses, and to compare this method with conventional ultrasonograghy (US), quantitative SWE parameters and qualitative SWE classification proposed before. METHODS: From April 2015 to March 2016, 314 consecutive females with 325 breast masses who decided to undergo core needle biopsy and/or surgical biopsy were enrolled. Conventional US and SWE were previously performed in all enrolled subjects...
February 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28040597/marine-actinobacteria-as-a-drug-treasure-house
#4
REVIEW
Syed Shams Ul Hassan, Abdul Lateef Shaikh
Marine actinobacteria have been considered as a gold mine with respect to great potential regarding their secondary metabolites. Most of the researches have been conducted on actinobacteria's derived secondary metabolites to examine its pharmacological properties. Actinobacteria have a potential to provide future drugs against crucial diseases, such as drug-resistance bacteria, cancer, a range of viral illnesses, malaria, several infections and inflammations. Although, the mode of action of many bio molecules are still untapped, for a tangible number of compounds by which they interfere with human pathogenesis are reported here with detailed diagrammed illustrations...
December 29, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27979266/anodic-stripping-voltammetry-with-gold-electrodes-as-an-alternative-method-for-the-routine-determination-of-mercury-in-fish-comparison-with-spectroscopic-approaches
#5
Agnese Giacomino, Andrea Ruo Redda, Stefania Squadrone, Marco Rizzi, Maria Cesarina Abete, Carmela La Gioia, Rosanna Toniolo, Ornella Abollino, Mery Malandrino
The applicability to the determination of mercury in tuna of square wave anodic stripping voltammetry (SW-ASV) conducted at both solid gold electrode (SGE) and a gold nanoparticle-modified glassy carbon electrode (AuNPs-GCE) was demonstrated. Mercury content in two certified materials and in ten samples of canned tuna was measured. The performances of the electrodes were compared with one another as well as with two spectroscopic techniques, namely cold vapour atomic absorption spectroscopy (CV-AAS) and a direct mercury analyser (DMA)...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27973352/contrast-enhanced-ultrasound-by-real-time-spatiotemporal-filtering-of-ultrafast-images
#6
Yann Desailly, Anne-Marie Tissier, Jean-Michel Correas, Frédéric Wintzenrieth, Mickaël Tanter, Olivier Couture
Contrast enhanced ultrasound (CEUS) takes advantage of the nonlinear behaviour of injected microbubbles. If these contrast techniques yield good specificity between bubbles and tissues, they suffer some drawbacks, inherently linked to their dependence on nonlinear content. In recent years, plane-wave ultrasound reached frame rates of up to 20 000 fps. In this study we propose a linear technique for CEUS that takes advantage of these very high frame rates to separate bubbles from tissue without requiring nonlinearities...
January 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27935318/versatile-polarization-generation-with-an-aluminum-plasmonic-metasurface
#7
Pin Chieh Wu, Wei-Yi Tsai, Wei Ting Chen, Yao-Wei Huang, Ting-Yu Chen, Jia-Wern Chen, Chun Yen Liao, Cheng Hung Chu, Greg Sun, Din Ping Tsai
All forms of light manipulation rely on light-matter interaction, the primary mechanism of which is the modulation of its electromagnetic fields by the localized electromagnetic fields of atoms. One of the important factors that influence the strength of interaction is the polarization of the electromagnetic field. The generation and manipulation of light polarization have been traditionally accomplished with bulky optical components such as waveplates, polarizers, and polarization beam splitters that are optically thick...
December 8, 2016: Nano Letters
https://www.readbyqxmd.com/read/27929803/an-autopsy-verified-case-of-ftld-tdp-type-a-with-upper-motor-neuron-predominant-motor-neuron-disease-mimicking-mm2-thalamic-type-sporadic-creutzfeldt-jakob-disease
#8
Yuichi Hayashi, Yasushi Iwasaki, Akira Takekoshi, Nobuaki Yoshikura, Takahiko Asano, Maya Mimuro, Akio Kimura, Katsuya Satoh, Tetsuyuki Kitamoto, Mari Yoshida, Takashi Inuzuka
Here we report an autopsy-verified case of frontotemporal lobar degeneration (FTLD)-transactivation responsive region (TAR) DNA binding protein (TDP) type A with upper motor neuron-predominant motor neuron disease mimicking MM2-thalamic-type sporadic Creutzfeldt-Jakob disease (sCJD). A 69-year-old woman presented with an 11-month history of progressive dementia, irritability, insomnia, and gait disturbance without a family history of dementia or prion disease. Neurological examination revealed severe dementia, frontal signs, and exaggerated bilateral tendon reflexes...
November 2016: Prion
https://www.readbyqxmd.com/read/27868416/-comparison-of-fibrotouch-and-acoustic-radiation-force-impulse-in-diagnosis-of-liver-fibrosis-in-patients-with-chronic-hepatitis-b
#9
Fang Liu, Lin Wei, Shanshan Wang, Bin Huang
Objective: To compare transient elastorgaphy (FibroTouch) and acoustic radiation force impulse (ARFI) in diagnosis of liver fibrosis in patients with chronic hepatitis B. Methods: One hundred and forty five patients with chronic hepatitis B underwent FibroTouch and ARFI examinations in Xixi Hospital of Hangzhou from January to November 2015. The liver stiffness (LSM) was detected by FibroTouch and the liver shear wave velocity (VTQ) was detected by ARFI; liver biopsy was performed in all patients. With biopsy results as gold standards, the diagnostic values of FibroTouch and ARFI for liver fibrosis were analyzed with Spearman correlation analysis and receiver operating characteristic (ROC) curve...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/27826343/resting-heart-rate-and-aortic-stiffness-in-normotensive-adults
#10
Jeongok G Logan, Suk-Sun Kim
BACKGROUND AND OBJECTIVES: Large-artery stiffness is an independent predictor of cardiovascular disease (CVD), and carotid-femoral pulse wave velocity (cfPWV) is considered the gold standard measure of arterial stiffness. A resting heart rate is an easily measured vital sign that is also associated with CVD morbidity and mortality. Previous studies have reported the significant relationship of a resting heart rate with arterial stiffness as measured by cfPWV only in hypertensive subjects; their relationship in nonhypertensive subjects remains unknown...
November 2016: Korean Circulation Journal
https://www.readbyqxmd.com/read/27774266/ecg-as-a-first-step-in-the-detection-of-left-ventricular-systolic-dysfunction-in-the-elderly
#11
Line Lisbeth Olesen, Andreas Andersen
AIMS: Due to the demographic development there is an increasing number of senior citizens with left ventricular systolic dysfunction (LVSD), defined as ejection fraction (EF) < 40%. Unfortunately there are under-diagnosis and under-treatment in the elderly of this serious condition. Echocardiography is the gold standard to diagnose LVSD, but access is limited. Simple screening methods may ensure reduction of undetected cases, and this study investigates if electrocardiogram (ECG) can be used to screen for LVSD in the geriatric population...
March 2016: ESC Heart Failure
https://www.readbyqxmd.com/read/27757457/xps-enables-visualization-of-electrode-potential-screening-in-an-ionic-liquid-medium-with-temporal-and-lateral-resolution
#12
M T Camci, P Aydogan, B Ulgut, C Kocabas, S Suzer
We present an X-ray photoelectron spectroscopic (XPS) investigation of potential screening across two gold electrodes fabricated on a porous polymer surface which is impregnated with the ionic liquid (IL) N-N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide [DEME-TFSI]. The IL provides a sheet of conducting layers to the insulating polymer film, and allows monitoring charging and screening dynamics at the polymer + IL/vacuum interface in a laterally resolved fashion across the electrodes...
October 19, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27754037/os-13-03-high-upstroke-time-of-arterial-pulse-wave-is-an-independent-predictor-for-the-presence-of-coronary-artery-disease
#13
Toshihiro Shoji, Sho Okada, Yuji Ohno, Atsushi Nakagomi, Yoshihide Fujimoto, Yosihio Kobayashi
OBJECTIVE: Pulse wave velocity is a non-invasive method that is useful not only for estimating arterial stiffness but also screening cardiovascular events in the general population. Upstroke time (UT) and % mean artery pressure (% MAP) are novel, adjunctive indices for arterial stiffness that are derived from morphology analysis of the pulse wave during brachial-ankle pulse wave velocity (baPWV) measurement. Several studies have shown the association between UT and coronary artery calcification score as assessed by multi-detector computed tomography (MDCT)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27642955/os-13-03-high-upstroke-time-of-arterial-pulse-wave-is-an-independent-predictor-for-the-presence-of-coronary-artery-disease
#14
Toshihiro Shoji, Sho Okada, Yuji Ohno, Atsushi Nakagomi, Yoshihide Fujimoto, Yosihio Kobayashi
OBJECTIVE: Pulse wave velocity is a non-invasive method that is useful not only for estimating arterial stiffness but also screening cardiovascular events in the general population. Upstroke time (UT) and % mean artery pressure (% MAP) are novel, adjunctive indices for arterial stiffness that are derived from morphology analysis of the pulse wave during brachial-ankle pulse wave velocity (baPWV) measurement. Several studies have shown the association between UT and coronary artery calcification score as assessed by multi-detector computed tomography (MDCT)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27608286/efficacy-of-orbital-color-doppler-imaging-and-neuroimaging-in-the-diagnosis-of-carotid-cavernous-fistulas
#15
Archana Srinivasan, Nicolas G Biro, Ann P Murchison, Robert C Sergott, Mark L Moster, Pascal M Jabbour, Jurij R Bilyk
PURPOSE: To evaluate the diagnostic sensitivity and specificity of orbital color Doppler imaging (CDI) and conventional neuroimaging (CT/MRI) compared with cerebral angiography in patients with carotid-cavernous fistulas (CCFs). METHODS: The study design was a retrospective patient chart and imaging review. The authors reviewed 655 charts of all patients who underwent CDI and neuroimaging (CT/MRI) between 2006 and 2015 at one institution. Sixty patients had a presumptive diagnosis of CCF without thrombosis...
September 6, 2016: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27604657/electrocardiographic-detection-of-hypertensive-left-atrial-enlargement-in-the-presence-of-obesity-re-calibration-against-cardiac-magnetic-resonance
#16
J C L Rodrigues, T Erdei, A G Dastidar, B McIntyre, A E Burchell, L E K Ratcliffe, E C Hart, M C K Hamilton, J F R Paton, A K Nightingale, N E Manghat
Left atrial enlargement (LAE) has adverse prognostic implications in hypertension. We sought to determine the accuracy of five electrocardiogram (ECG) criteria for LAE in hypertension relative to cardiac magnetic resonance (CMR) gold standard and investigate the effect of concomitant obesity. One hundred and thirty consecutive patients (age: 51.4±15.1 years, 47% male, 51% obese, systolic blood pressure (BP): 171±29 mm Hg, diastolic BP: 97±15 mm Hg) referred for CMR (1.5 T) from a tertiary hypertension clinic were included...
September 8, 2016: Journal of Human Hypertension
https://www.readbyqxmd.com/read/27600373/magnetically-propelled-fish-like-nanoswimmers
#17
Tianlong Li, Jinxing Li, Hongtao Zhang, Xiaocong Chang, Wenping Song, Yanan Hu, Guangbin Shao, Elodie Sandraz, Guangyu Zhang, Longqiu Li, Joseph Wang
The swimming locomotion of fish involves a complex interplay between a deformable body and induced flow in the surrounding fluid. While innovative robotic devices, inspired by physicomechanical designs evolved in fish, have been created for underwater propulsion of large swimmers, scaling such powerful locomotion into micro-/nanoscale propulsion remains challenging. Here, a magnetically propelled fish-like artificial nanoswimmer is demonstrated that emulates the body and caudal fin propulsion swimming mechanism displayed by fish...
September 7, 2016: Small
https://www.readbyqxmd.com/read/27544359/the-completely-fused-medial-clavicular-epiphysis-in-high-frequency-ultrasound-scans-as-a-diagnostic-criterion-for-forensic-age-estimations-in-the-living
#18
Michael Gonsior, Frank Ramsthaler, Christoph Birngruber, Martin Obert, Marcel A Verhoff
The assessment of ossification of the medial clavicular epiphysis plays a decisive role in the forensic age estimation of living subjects. Primarily for reasons of minimizing the radiation exposure currently associated with such evaluations, non-ionizing methods would be an advance.This study pursued the question whether full union of the medial clavicular epiphysis, visualized by high-frequency sonography, is a reliable criterion for age-threshold determinations. The ossification stage of the medial clavicular epiphysis of 215 female and 195 male volunteers, aged between 14 and 26 years, was evaluated in bilateral sonograms...
November 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27543706/ffr-prediction-model-based-on-conventional-quantitative-coronary-angiography-and-the-amount-of-myocardium-subtended-by-an-intermediate-coronary-artery-stenosis
#19
Luigi Di Serafino, Gabriella Scognamiglio, Maurizio Turturo, Giovanni Esposito, Riccardo Savastano, Saverio Lanzone, Bruno Trimarco, Carlo D'Agostino
BACKGROUND: Coronary angiography has poor predictive value for functionally significant coronary artery stenosis. The Fractional Flow Reserve (FFR) currently represents the gold standard to define the ischemic potential of epicardial stenosis and, recently, the instantaneous wave-free ratio (iFR), has also been introduced as alternative to the FFR, but it still remains an invasive procedure. We aimed this study in order to evaluate the accuracy of the "Angiography-DeriveD hEmoDynamic index" (ADDED index) to predict the FFR as compared with the iFR...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27490270/enhancing-the-bipolar-redox-cycling-efficiency-of-plane-recessed-microelectrode-arrays-by-adding-a-chemically-irreversible-interferent
#20
Dingwen He, Jiawei Yan, Feng Zhu, Yongliang Zhou, Bingwei Mao, Alexander Oleinick, Irina Svir, Christian Amatore
The individual electrochemical anodic responses of dopamine (DA), epinephrine (EP), and pyrocatechol (CT) were investigated at arrays of recessed gold disk-microelectrodes arrays (MEAs) covered by a gold plane electrode and compared to those of their binary mixture (CT and EP) when the top-plane electrode was operated as a bipolar electrode or as a collector. The interferent species (EP) displays a chemically irreversible wave over the same potential range as the chemically reversible ones of DA or CT. As expected, in the generator-collector (GC) mode, EP did not contribute to the redox cycling amplification that occurred only for DA or CT...
September 6, 2016: Analytical Chemistry
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