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https://www.readbyqxmd.com/read/29161690/catechins-blunt-the-effects-of-oxldl-and-its-primary-metabolite-phosphatidylcholine-hydroperoxide-on-endothelial-dysfunction-through-inhibition-of-oxidative-stress-and-restoration-of-enos-in-rats
#1
Hao-Hsiang Chang, Chen-Yen Chien, Kuo-Hsin Chen, Shih-Chung Huang, Chiang-Ting Chien
BACKGROUND/AIMS: We explored the effects of catechins (decaffeinated green tea extracts containing (-)-epicatechin, (-)-epigallocatechin, (-)-epicatechin gallate and (-)-epigallocatechin gallate) on atherosclerosis risk factors, oxidized low-density lipoprotein (oxLDL) and its primary metabolite, phosphatidylcholine hydroperoxide (PCOOH) induced oxidative injury in cultured endothelial cell line and rats. METHODS: We used endothelial cell line and male Wistar rats to determine the effect of catechins on oxLDL or PCOOH induced oxidative injury including apoptosis, H2O2 level, vascular responses and urinary 8-isoprostane and nitrite/nitrate concentration...
November 22, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29161673/reduced-resting-state-thalamostriatal-functional-connectivity-is-associated-with-excessive-daytime-sleepiness-in-persons-with-and-without-depressive-disorders
#2
David T Plante, Rasmus M Birn, Erin C Walsh, Roxanne M Hoks, M Daniela Cornejo, Heather C Abercrombie
BACKGROUND: Excessive daytime sleepiness (EDS) is a common and significant problem encountered in affective illness, however, the biological underpinnings of EDS in persons with psychiatric disorders are not clear. This study evaluated the associations between thalamic connectivity with cortical and subcortical brain regions with EDS in persons with and without depressive disorders (DD). METHODS: Resting-state functional connectivity magnetic resonance imaging scans from 67 unmedicated young to middle-aged women with current DD (n = 30), remitted DD (n = 13), and healthy controls (n = 24) were utilized to examine the associations between thalamic connectivity with cortical/subcortical structures and EDS...
November 14, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29161579/correlation-between-lung-perfusion-blood-volume-and-spect-images-in-patients-with-chronic-thromboembolic-pulmonary-hypertension-by-balloon-pulmonary-angioplasty
#3
Hirofumi Koike, Eijun Sueyoshi, Ichiro Sakamoto, Masataka Uetani, Tomoo Nakata, Kouji Maemura
OBJECTIVES: We evaluated the reperfusion by balloon pulmonary angioplasty (BPA) in lung PBV and SPECT images. METHODS: In total, 17 patients and 57 sessions were evaluated. Pre-BPA and post-BPA lung PBV and SPECT/CT images, based on both anatomical segments and physiologic regions (upper/middle/lower) were compared. RESULTS: BPA had a positive effect on most hypoperfused/unperfused segments/regions. There was generally a high rate of agreement between PBV measurements and SPECT/CT...
November 11, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29161281/the-administration-of-hydrogen-sulphide-prior-to-ischemic-reperfusion-has-neuroprotective-effects-in-an-acute-stroke-model
#4
Chul-Woong Woo, Jae-Im Kwon, Kyung-Won Kim, Jeong-Kon Kim, Sang-Beom Jeon, Seung-Chae Jung, Choong-Gon Choi, Sang-Tae Kim, Jinil Kim, Su Jeong Ham, Woo-Hyun Shim, Yu Sub Sung, Hyun Kwon Ha, Yoonseok Choi, Dong-Cheol Woo
Emerging evidence has suggested that hydrogen sulfide (H2S) may alleviate the cellular damage associated with cerebral ischemia/reperfusion (I/R) injury. In this study, we assessed using 1H-magnetic resonance imaging/magnetic resonance spectroscopy (1H-MRI/MRS) and histologic analysis whether H2S administration prior to reperfusion has neuroprotective effects. We also evaluated for differences in the effects of H2S treatment at 2 time points. 1H-MRI/MRS data were obtained at baseline, and at 3, 9, and 24 h after ischemia from 4 groups: sham, control (I/R injury), sodium hydrosulfide (NaHS)-30 and NaHS-1 (NaHS delivery at 30 and 1 min before reperfusion, respectively)...
2017: PloS One
https://www.readbyqxmd.com/read/29161162/patient-perceived-and-laboratory-measured-halos-associated-with-diffractive-bifocal-and-trifocal-intraocular-lenses
#5
Francisco Alba-Bueno, Nuria Garzón, Fidel Vega, Francisco Poyales, María S Millán
PURPOSE: To examine and assess the halos generated in distance vision by multifocal intraocular lenses (IOLs) using both in vitro objective and in vivo subjective methods. SETTING: The objective method was carried out in the optics laboratory of the Applied Optics and Image Processing Group (Universitat Politècnica de Catalunya -Barcelona). The psychophysical and subjective methods were carried out in the Instituto de Oftalmología Avanzada Madrid Innova Ocular...
November 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29160929/anatomical-variations-of-the-human-cochlea-determined-from-micro-ct-and-high-resolution-ct-imaging-and-reconstruction
#6
Jie Tang, Xianglong Tang, Zhenhua Li, YiKang Liu, SongHua Tan, Heng Li, RongDan Ke, Zhi Wang, Li Gong, AnZhou Tang
Understanding the anatomical variations in the human cochlea are important for cochlear implants. This study examined these variations using a reconstructed fusion model of the skull and temporal bone. The 3D digital model of the temporal bone was reconstructed from multiple axial micro-CT scans of temporal bone and high resolution CT (HRCT) of the skull from 15 cadavers. A skull model was reconstructed and merged with the reconstructed temporal bone. The 3D relationship between the cochlea and the skull's mid-sagittal plane was analyzed...
November 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29160919/appropriate-use-criteria-for-transthoracic-echocardiography-are-they-relevant-to-european-centers
#7
Robert N Kerley, Kenneth P Thornton, Raymond M Kelly, Siun O'Flynn
BACKGROUND: There is a growing interest in appropriate use criteria (AUC) for cardiovascular imaging referrals in Europe. These criteria, developed by American subspecialty societies, have been in use since 2007 and show a temporal reduction in inappropriate transthoracic echocardiogram (TTE) requests. When applied to European centers, inappropriate referral rates as high as 15% have been observed. METHODS: A retrospective analysis of TTE referrals for appropriateness and major abnormality detection was conducted over a two-month period at Cork University Hospital (CUH)...
November 21, 2017: Echocardiography
https://www.readbyqxmd.com/read/29160832/first-spaceborne-sar-gmti-experimental-results-for-the-chinese-gaofen-3-dual-channel-sar-sensor
#8
Chenghao Wang, Guisheng Liao, Qingjun Zhang
In spaceborne synthetic aperture radar (SAR) sensors, it is a challenging task to detect ground slow-moving targets against strong clutter background with limited spatial channels and restricted pulse repetition frequency (PRF). In this paper, we evaluate the image-based dual-channel SAR-ground moving target indication (SAR-GMTI) workflow for the Gaofen-3 SAR sensor and analyze the impact of strong azimuth ambiguities on GMTI when the displaced phase center antenna (DPCA) condition is not fully satisfied, which has not been demonstrated yet...
November 21, 2017: Sensors
https://www.readbyqxmd.com/read/29160812/micro-droplet-detection-method-for-measuring-the-concentration-of-alkaline-phosphatase-labeled-nanoparticles-in-fluorescence-microscopy
#9
Rufeng Li, Yibei Wang, Hong Xu, Baowei Fei, Binjie Qin
This paper developed and evaluated a quantitative image analysis method to measure the concentration of the nanoparticles on which alkaline phosphatase (AP) was immobilized. These AP-labeled nanoparticles are widely used as signal markers for tagging biomolecules at nanometer and sub-nanometer scales. The AP-labeled nanoparticle concentration measurement can then be directly used to quantitatively analyze the biomolecular concentration. Micro-droplets are mono-dispersed micro-reactors that can be used to encapsulate and detect AP-labeled nanoparticles...
November 21, 2017: Sensors
https://www.readbyqxmd.com/read/29160793/a-gal-m%C3%A2%C2%B5s-device-to-evaluate-cell-migratory-response-to-combined-galvano-chemotactic-fields
#10
Shawn Mishra, Maribel Vazquez
Electric fields have been studied extensively in biomedical engineering (BME) for numerous regenerative therapies. Recent studies have begun to examine the biological effects of electric fields in combination with other environmental cues, such as tissue-engineered extracellular matrices (ECM), chemical gradient profiles, and time-dependent temperature gradients. In the nervous system, cell migration driven by electrical fields, or galvanotaxis, has been most recently studied in transcranial direct stimulation (TCDS), spinal cord repair and tumor treating fields (TTF)...
November 21, 2017: Biosensors
https://www.readbyqxmd.com/read/29160778/optical-coherence-tomography-2-diagnostic-tool-to-study-peripheral-vitreoretinal-pathologies
#11
Matteo G Cereda, Federico Corvi, Mariano Cozzi, Marco Pellegrini, Giovanni Staurenghi
PURPOSE: To investigate the utility of new wide-field optical coherence tomography (OCT) device in the evaluation of mid and far retinal periphery and to show its feasibility and advantages in clinical practice. METHODS: Consecutive patients underwent a complete ophthalmologic examination including standard OCT and new prototype OCT2 derived from Heidelberg Spectralis. RESULTS: Thirty-one eyes of 31 patients were studied with a total of 44 lesions, including 18 retinal detachments, 15 retinal holes and tears, 9 retinoschisis, and 2 retinal tufts...
November 16, 2017: Retina
https://www.readbyqxmd.com/read/29160621/magnetic-resonance-imaging-in-heart-failure-including-coronary-imaging-numbers-facts-and-challenges
#12
EDITORIAL
Lisa Adams, Michel Noutsias, Boris Bigalke, Marcus R Makowski
Coronary artery disease (CAD) is a major risk factor for the incidence and progression of heart failure (HF). HF is characterized by a substantial morbidity and mortality and its lifetime risk is estimated at approximately 20% for men and women. As patients are in most cases identified only after developing overt clinical symptoms, detecting early stages of CAD and HF is of paramount importance. Due to its non-invasiveness, excellent soft-tissue contrast, high spatial resolution, and multiparametric nature, cardiovascular magnetic resonance (CMR) imaging has emerged as a promising radiation-free technique to assess a wide range of cardiovascular diseases such as CAD or HF, enabling a comprehensive evaluation of myocardial anatomy, regional and global function, and viability with the additional benefit of in vivo tissue characterization...
November 21, 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29160551/effects-of-pilates-and-yoga-in-patients-with-chronic-neck-pain-a-sonographic-study
#13
Naime Uluğ, Öznur Tunca Yılmaz, Murat Kara, Levent Özçakar
BACKGROUND: Various studies have shown the efficacy of conventional isometric, Pilates and yoga exercises. However, data on the effects and comparison of these specific exercises on the cervical muscle morphology are insufficient or lacking. OBJECTIVE: To investigate the effects of different exercise treatments on neck muscles in patients with chronic neck pain. DESIGN: A randomized study. METHODS: Fifty-six patients with chronic neck pain were randomized into 3 groups as follows: Pilates group (n = 20), yoga group (n = 18) and isometric group (n = 18)...
November 16, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29160541/eyelid-fissure-dimensions-in-japanese-and-in-brazilians-of-european-descent-over-50-years-of-age
#14
Magda Massae Hata Viveiros, Olívia Matai, Rodrigo Ueno Takahagi, Carlos Roberto Padovani, Silvana Artioli Schellini
PURPOSE: To investigate differences in the palpebral fissure eyelid position in Japanese subjects and in Brazilian subjects of European descent over 50 years of age. METHODS: A cross-sectional study evaluating 50 Japanese subjects and 50 Bra---zilian subjects of European descent over 50 years of age was performed to evaluate the effect of aging on eyelid position. Digital photographs were taken with the eyes in the primary position and transferred to a computer to be processed by Scion imaging software for evaluation of palpebral fissure width, height, and margin reflex distance (MRD)...
September 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/29160537/relationship-between-anterior-segment-and-optic-nerve-head-parameters-in-healthy-subjects
#15
Ali Bulent Cankaya, Serdar Ozates
PURPOSE: To determine the relationship between anterior segment and optic nerve head (ONH) parameters. METHODS: Two hundred healthy subjects were enrolled in this study. The par-ticipants underwent measurement of anterior segment parameters with a Pentacam Scheimpflug system and imaging of the optic disc with confocal scanning laser ophthalmoscopy. Pearson's correlation coefficient was calculated to assess the associations between ONH and anterior segment parameters...
September 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/29160401/fluoride-varnishes-against-dental-erosion-caused-by-soft-drink-combined-with-pediatric-liquid-medicine
#16
Adílis Kalina Alexandria, Ana Maria Gondim Valença, Lúcio Mendes Cabral, Lucianne Cople Maia
The present study evaluated the effect of NaF and CPP-ACP/NaF varnishes to reduce erosion produced by soft drink (SD) combined or not with pediatric liquid medicine. Enamel specimens were pre-treated with fluoride varnish, according to the following groups: NaF varnish (Duraphat®) or CPP-ACP/NaF varnish (MI varnishTM). Two types of erosive cycles were made: by soft drink erosion (SDE) or by pediatric liquid medicine plus soft drink erosion (PLM/SDE). Bovine enamel specimens were randomly assigned in six groups (n=10): G1=NaF + SDE; G2=CPP-ACP/NaF + SDE; G3=Distilled and deionized (DD) water + SDE; G4=NaF + PLM/SDE; G5=CPP-ACP/NaF + PLM/SDE and G6=DD water + PLM/SDE...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29160399/marginal-and-internal-adaptation-of-zirconia-crowns-a-comparative-study-of-assessment-methods
#17
Rafael Schlögel Cunali, Rafaella Caramori Saab, Gisele Maria Correr, Leonardo Fernandes da Cunha, Bárbara Pick Ornaghi, André V Ritter, Carla Castiglia Gonzaga
Marginal and internal adaptation is critical for the success of indirect restorations. New imaging systems make it possible to evaluate these parameters with precision and non-destructively. This study evaluated the marginal and internal adaptation of zirconia copings fabricated with two different systems using both silicone replica and microcomputed tomography (micro-CT) assessment methods. A metal master model, representing a preparation for an all-ceramic full crown, was digitally scanned and polycrystalline zirconia copings were fabricated with either Ceramill Zi (Amann-Girrbach) or inCoris Zi (Dentslpy-Sirona), n=10...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29160397/mechanical-preparation-showed-superior-shaping-ability-than-manual-technique-in-primary-molars-a-micro-computed-tomography-study
#18
Lídia Regina da Costa Hidalgo, Léa Assed Bezerra da Silva, Graziela Bianchi Leoni, Jardel Francisco Mazzi-Chaves, Emily Eduardo da Silva Carvalho, Alberto Consolaro, Manoel Damião Sousa-Neto
The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre- and postoperative micro-CT images were reconstructed. Changes in 2D (area, perimeter, roundness, minor and major diameter) and 3D [volume, surface area, structure model index (SMI)] morphological parameters, as well as canal transportation and lateral perforations were evaluated (Kruskal-Wallis and ANOVA; a=0...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29160180/incidental-findings-on-fdg-pet-ct-in-head-and-neck-cancer
#19
Christopher J Britt, Austin M Maas, Tabassum A Kennedy, Gregory K Hartig
Objective 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG PET/CT) imaging is common in head and neck cancer and often identifies incidental findings that necessitate additional patient evaluations. Our goal was to assess the frequency and nature of these incidental imaging findings on FDG-PET/CT. Study Design Retrospective cohort study. Setting Tertiary medical center. Subjects and Methods All patients with head and neck cancer who had undergone FDG-PET/CT imaging between January 2014 and June 2015 at our institution were evaluated for incidental findings...
November 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29160142/structural-fat-grafting-to-improve-outcomes-of-vocal-folds-fat-augmentation-long-term-results
#20
Giovanna Cantarella, Riccardo F Mazzola, Michele Gaffuri, Elisabetta Iofrida, Pietro Biondetti, Laura V Forzenigo, Lorenzo Pignataro, Sara Torretta
Objective Evaluating the long-term outcomes of vocal fold structural fat grafting. Study Design Case series with chart review. Setting University hospital. Subjects and Methods Seventy-nine dysphonic patients (16-82 years; 55 with unilateral laryngeal paralysis and 24 with vocal fold scarring) underwent vocal fold fat injection. Fat was harvested by low-pressure liposuction and then processed by centrifugation. Refined fat aliquots were placed in the vocal fold and paraglottic space in multiple tunnels to enhance graft neovascularization...
November 1, 2017: Otolaryngology—Head and Neck Surgery
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