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https://www.readbyqxmd.com/read/28109054/intracoronary-optical-coherence-tomography-clinical-and-research-applications-and-intravascular-imaging-software-overview
#1
Erhan Tenekecioglu, Felipe N Albuquerque, Yohei Sotomi, Yaping Zeng, Pannipa Suwannasom, Hiroki Tateishi, Rafael Cavalcante, Yuki Ishibashi, Shimpei Nakatani, Mohammad Abdelghani, Jouke Dijkstra, Christos Bourantas, Carlos Collet, Antonios Karanasos, Maria Radu, Ancong Wang, Takashi Muramatsu, Ulf Landmesser, Takayuki Okamura, Evelyn Regar, Lorenz Räber, Giulio Guagliumi, Robert T Pyo, Yoshinobu Onuma, Patrick W Serruys
By providing valuable information about the coronary artery wall and lumen, intravascular imaging may aid in optimizing interventional procedure results and thereby could improve clinical outcomes following percutaneous coronary intervention (PCI). Intravascular optical coherence tomography (OCT) is a light-based technology with a tissue penetration of approximately 1 to 3 mm and provides near histological resolution. It has emerged as a technological breakthrough in intravascular imaging with multiple clinical and research applications...
January 21, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28108959/innovative-root-end-filling-materials-based-on-calcium-silicates-and-calcium-phosphates
#2
Ali Abedi-Amin, Arlinda Luzi, Massimo Giovarruscio, Gaetano Paolone, Atanaz Darvizeh, Victoria Vivó Agulló, Salvatore Sauro
This in vitro study evaluated the apical sealing ability, bioactivity and biocompatibility of an experimental calcium silicate-based and two light-curing calcium silicate/calcium-phosphate cements as potential root end filling materials. A calcium silicate Portland-based (Control PC), an experimental calcium silicate (Exp. PC) and two light-curing cements (LC-CaP; LC-Si/CaP) were assessed for their alkalinising activity (pH) and biocompatibility. Single-rooted human canines were endodontically treated, filled with gutta-percha and finally submitted to apicoectomy...
February 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28108907/peripapillary-retinal-nerve-fiber-layer-and-ganglion-cell-inner-plexiform-layer-thickness-in-adult-onset-familial-mediterranean-fever
#3
Sait Alim, Mehmet Esen, Ayşe Kevser Demir, Selim Demir, Hüseyin Ortak, Alper Güneş, Tufan Alatli, Helin Deniz Demir
OBJECTIVE: The purpose of the present study was to evaluate the thickness of the peripapillary retinal nerve fiber layer (RNFL) and retinal ganglion cell-inner plexiform layer (GCIPL) in adult-onset familial Mediterranean fever (FMF). METHODS: Forty two adult-onset FMF patients and forty two healthy controls were included in the present study. Detailed ocular examination was performed, and then the thickness of the peripapillary RNFL and GCIPL was measured by Spectral domain optical coherence tomography...
January 21, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28108906/a-novel-marker-in-acute-central-serous-chorioretinopathy-thiol-disulfide-homeostasis
#4
Hasan Altinkaynak, Piraye Zeynep Kurkcuoglu, Mehtap Caglayan, Mücella Arıkan Yorgun, Nilay Yuksel, Pınar Kosekahya, Cemile Koca, Yasin Toklu
PURPOSE: The aim of this study was to compare dynamic thiol/disulfide homeostatic status in acute central serous chorioretinopathy (CSCR) patients by using a novel and automated assay determining dynamic thiol/disulfide homeostasis. METHODS: Fifty-one patients with acute CSCR (study group) and 65 healthy individuals (control group) were enrolled in this study. Diagnosis of acute CSCR was made clinically and using spectral-domain RTVue OCT (optical coherence tomography) (Optovue, Fremont, CA)...
January 21, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28108905/the-assessment-of-macular-electrophysiology-and-macular-morphology-in-patients-with-vitiligo
#5
Rukiye Aydin, Mustafa Ozsutcu, Sevil Karaman Erdur, Funda Dikkaya, Ali Balevi, Merve Ozbek, Fevzi Senturk
PURPOSE: We aimed to analyze the electrophysiologic function and morphology of macula in vitiligo patients. METHODS: Seventeen patients with vitiligo and 11 healthy subjects were studied. All participants underwent multifocal electroretinography (mfERG) and spectral domain optical coherence tomography (SD-OCT) evaluations. The mfERG (P1 mfERG responses central and peripheral) and retinal layer segmentation parameters (nine ETDRS subfields) were compared in vitiligo and control groups...
January 21, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28108902/comparison-of-anterior-segment-measurements-with-lenstar-and-pentacam-in-patients-with-newly-diagnosed-glaucoma
#6
Emine Sen, Merve Inanc, Ufuk Elgin, Pelin Yilmazbas
PURPOSE: To compare anterior segment measurements obtained using the Pentacam; Oculus, HR and the LenStar LS 900 in patients with newly diagnosed glaucoma. METHODS: Patients with ocular hypertension and primary open-angle glaucoma who had been treated with PGA were included in the study. Anterior segment measurements including central corneal thickness (CCT), keratometry, anterior chamber depth (ACD) and white-to-white (WTW) corneal diameter obtained with the optic low-coherent reflectometer (LenStar LS-900, Haag-Streit AG, Switzerland) and with the Scheimpflug system (Pentacam; Oculus, HR) were compared...
January 21, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28108825/photodynamic-therapy-for-the-treatment-of-complex-anal-fistula
#7
A Arroyo, P Moya, M A Rodríguez-Prieto, M J Alcaide, M M Aguilar, M Bellón, M T Pérez-Vázquez, F Candela, R Calpena
BACKGROUND: Photodynamic therapy (PDT) is a new procedure for the treatment of anal fistula. This preliminary study was designed to investigate the safety and effectiveness of this new technique in the treatment of anal fistula. METHODS: Ten patients were treated with PDT. Intralesional 5-aminolevulinic acid (ALA) 2% was directly injected into the fistula. The internal and external orifices were closed. After an incubation period of 2 h, the fistula was irradiated using an optical fibre connected to a red laser (MULTIDIODE 630 PDT, INTERmedic, Spain) operating at 1 W/cm for 3 min (180 Joules)...
January 20, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28108754/using-fluorescence-immunochromatographic-test-strips-based-on-quantum-dots-for-the-rapid-and-sensitive-determination-of-microcystin-lr
#8
Jiadi Sun, Ying Li, Fuwei Pi, Jian Ji, Yinzhi Zhang, Xiulan Sun
A novel immunosensor for the detection of microcystin-LR (MC-LR) was constructed with use of immunochromatographic test strips (ICTS). Quantum dots were chosen to be the fluorescent labels for the immune sensor in ICTS because of their excellent optical and electronic properties with a relatively narrow emission spectrum. The detection sensitivity of the ICTS was related to the concentration of the fluorescent probe and the amount of the MC-LR standards. Under optimal conditions, with MC-LR as the target, the ICTS sensor had a linear range from 0...
January 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28108570/retinal-sensitivity-changes-associated-with-diabetic-neuropathy-in-the-absence-of-diabetic-retinopathy
#9
Srividya Neriyanuri, Shahina Pardhan, Laxmi Gella, Sakshyar Saumya Pal, Suganeswari Ganesan, Tarun Sharma, Rajiv Raman
PURPOSE: To explore any relationship between the markers of early retinal neuronal damage and peripheral diabetic neuropathy in subjects with no diabetic retinopathy (DR). METHODS: A cross-sectional study in which type 2 diabetic subjects (n=743) without DR were studied. Visual functions including visual acuity, contrast sensitivity, colour vision, retinal sensitivity using microperimeter and retinal thicknesses by spectral domain optical coherence tomography were measured...
January 20, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28108489/processing-of-egomotion-consistent-optic-flow-in-the-rhesus-macaque-cortex
#10
Benoit R Cottereau, Andrew T Smith, Samy Rima, Denis Fize, Yseult Héjja-Brichard, Luc Renaud, Camille Lejards, Nathalie Vayssière, Yves Trotter, Jean-Baptiste Durand
The cortical network that processes visual cues to self-motion was characterized with functional magnetic resonance imaging in 3 awake behaving macaques. The experimental protocol was similar to previous human studies in which the responses to a single large optic flow patch were contrasted with responses to an array of 9 similar flow patches. This distinguishes cortical regions where neurons respond to flow in their receptive fields regardless of surrounding motion from those that are sensitive to whether the overall image arises from self-motion...
January 19, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28108479/study-of-optimal-perimetric-testing-in-children-optic-development-and-feasibility-of-the-kinetic-perimetry-reliability-measure-kprm
#11
Dipesh E Patel, Ananth C Viswanathan, David Garway-Heath, Phillippa M Cumberland, Bronwen C Walters, Isabelle Russell-Eggitt, Mario Cortina-Borja, Jugnoo S Rahi
INTRODUCTION: Interpretation of perimetric findings, particularly in children, relies on accurate assessment of test reliability, yet no objective measures of reliability exist for kinetic perimetry. We developed the kinetic perimetry reliability measure (KPRM), a quantitative measure of perimetric test reproducibility/reliability and report here its feasibility and association with subjective assessment of reliability. METHODS: Children aged 5-15 years, without an ophthalmic condition that affects the visual field, were recruited from Moorfields Eye Hospital and underwent Goldmann perimetry as part of a wider research programme on perimetry in children...
February 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28108456/multifaceted-presentation-of-recurrent-spontaneous-coronary-artery-dissection-angiography-and-optical-coherence-tomography-findings
#12
Marcos Garcia-Guimaraes, Teresa Bastante, Javier Cuesta, Fernando Rivero, Gonzalo Navarrete, Teresa Alvarado, Julián Cuesta, Amparo Benedicto, Fernando Alfonso
No abstract text is available yet for this article.
February 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28108413/investigation-of-pectin-starch-hydrogel-as-a-carrier-for-oral-delivery-of-probiotic-bacteria
#13
Alireza Dafe, Hossein Etemadi, Azita Dilmaghani, Gholam Reza Mahdavinia
The present study highlights the fabrication of novel food-grade hydrogel particles based on pectin and starch for probiotic colon delivery. Lactobacillus plantarum ATCC:13643 (L. plantarum) cells were encapsulated in pectin/starch hydrogel by extrusion method. Four batches were formulated with different ratios of starch/pectin solutions. Optical and scanning electron microscopy obviously showed the random distribution of L. plantarum throughout the hydrogel network. The viability of encapsulated cells in simulated gastric fluid (SGF) and bile salt solution was significantly higher when compared to nonencapsulated cells...
January 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28108409/sol-gel-synthesis-and-characterizations-of-hybrid-chitosan-peg-calcium-silicate-nanocomposite-modified-with-zno-nps-and-e102-for-optical-and-antibacterial-applications
#14
Ahmed M Youssef, Amany M El-Nahrawy, Ali B Abou Hammad
Hybrid Chitosan/Poly ethylene glycol/calcium silicate (CS/PEG/calcium silicate) nanocomposite modified with different two types, zinc oxide nanoparticles (ZnO-NPs) and tartrazine dye (E102) were prepared by sol gel method and the characterization of their structure and biological properties were carried out in order to evaluate the possible use in optical and biomedical fields. The hybrid CS/PEG/calcium silicate complex formations have been established by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopic analysis...
January 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28108399/fine-structure-of-the-anterior-median-eyes-of-the-funnel-web-spider-agelena-labyrinthica-araneae-agelenidae
#15
Wolfgang-D Schröer
Only few electron microscopic studies exist on the structure of the main eyes (anterior median eyes, AME) of web spiders. The present paper provides details on the anatomy of the AME in the funnel-web spider Agelena labyrinthica. The retina consists of two separate regions with differently arranged photoreceptor cells. Its central part has sensory cells with rhabdomeres on 2, 3, or 4 sides, whereas those of the ventral retina have only two rhabdomeres on opposite sides. In addition, the rhabdomeres of the ventral retina are arranged in a specific way: Whereas in the most ventral part they form long tangential rows, those towards the center are detached and are arranged radially...
January 17, 2017: Arthropod Structure & Development
https://www.readbyqxmd.com/read/28108378/the-pressure-induced-deformation-response-of-the-human-lamina-cribrosa-analysis-of-regional-variations
#16
Dan E Midgett, Mary E Pease, Joan L Jefferys, Mohak Patel, Christian Franck, Harry A Quigley, Thao D Nguyen
: The objective of this study was to measure the pressure-induced deformation response of the human lamina cribrosa (LC) and analyze for variations with age and anatomical region. The posterior scleral cup of 8 eyes from 6 human donors was mounted onto a custom inflation chamber. A laser-scanning microscope was used for second harmonic generation (SHG), imaging the collagen structure in the posterior volume of the LC at pressures from 5 mmHg to 45 mmHg. The SHG volumes were analyzed by the Fast-Fourier Iterative Digital Volume Correlation (DVC) algorithm for the three dimensional (3D) displacement field...
January 17, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28108327/structurally-diverse-secondary-metabolites-from-a-deep-sea-derived-fungus-penicillium-chrysogenum-scsio-41001-and-their-biological-evaluation
#17
Shengtian Chen, Junfeng Wang, Zhen Wang, Xiuping Lin, Bingxin Zhao, Kumaravel Kaliaperumal, Xiaojian Liao, Zhengchao Tu, Jianlin Li, Shihai Xu, Yonghong Liu
Five new compounds, including a cytotoxic dimeric isocoumarin, bipenicilisorin (1), a merosesquiterpenoid, yaminterritrem C (2), a citrinin dimer, penicitrinone F (3), a alkaloid, terremide D (4), and a δ-valerolacton, (E)-4-(propen-1-yl)-5,6-dihydro-2H-pyran-2-one (5), along with ten known compounds (6-15) were isolated from a deep-sea-derived fungus Penicillium chrysogenum SCSIO 41001. Their structures and absolute configurations were elucidated by NMR spectra, MS, CD, optical rotation, X-ray crystallography, and compared with literature data...
January 17, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28108173/broach-handle-design-changes-force-distribution-in-the-femur-during-total-hip-arthroplasty
#18
Dustin A Greenhill, Pooyan Abbasi, Kurosh Darvish, Andrew M Star
BACKGROUND: Curved broach handles were developed to overcome limited surgical exposures during total hip arthroplasty. Some authors report increased intraoperative fracture rates during limited exposures. This study evaluates mechanical force ratios transmitted to the bone while broaching with curved vs straight handles. METHODS: An experimental model utilized a 6-axis load cell to measure force distributions produced by 4 different broach handles, each with increasing offset and curvature...
December 29, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28108140/steroid-treatment-in-ocular-tuberculosis-a-double-edged-sword
#19
S Souissi, T David, L Beral
INTRODUCTION: We report the case of a Caribbean patient with an atypical presentation of bilateral tuberculous chorioretinopathy. PATIENT AND METHODS: A 57-year-old woman, with hypertension and non-insulin dependent diabetes, was referred to our center for a sudden loss of vision in the right eye to hand motions. Ophthalmic examination revealed only right papilledema. Brain magnetic resonance imaging was normal. Laboratory examination revealed no signs of inflammation...
January 17, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28108001/nonarteritic-anterior-ischemic-optic-neuropathy-and-intraocular-surgery
#20
EDITORIAL
Timothy J McCulley, Byron L Lam, William J Feuer
No abstract text is available yet for this article.
January 18, 2017: American Journal of Ophthalmology
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