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https://www.readbyqxmd.com/read/28732392/systematic-assessment-with-i-scan-magnification-endoscopy-and-acetic-acid-improves-dysplasia-detection-in-patients-with-barrett-s-esophagus
#1
Gideon Lipman, Raf Bisschops, Vinay Sehgal, Jacobo Ortiz-Fernández-Sordo, Rami Sweis, Jose M Esteban, Rifat Hamoudi, Matthew R Banks, Krish Ragunath, Laurence B Lovat, Rehan J Haidry
Background and study aims Enhanced endoscopic imaging with chromoendoscopy may improve dysplasia recognition in patients undergoing assessment of Barrett's esophagus (BE). This may reduce the need for random biopsies to detect more dysplasia. The aim of this study was to assess the effect of magnification endoscopy with I-SCAN (Pentax, Tokyo, Japan) and acetic acid (ACA) on dysplasia detection in BE using a novel mucosal and vascular classification system. Methods BE segments and suspicious lesions were recorded with high definition white-light and magnification endoscopy enhanced using all I-SCAN modes in combination...
July 21, 2017: Endoscopy
https://www.readbyqxmd.com/read/28732170/angiotensin-ii-receptors-modulation-of-calcium-homeostasis-in-human-vascular-endothelial-cells
#2
Maud Kamal, Danielle Jacques, Ghassan Bkaily
Angiotensin II (AngII) plays an important role in the regulation of vascular smooth muscle function. However, little is known about AngII and its receptors AT1 (AT1R) and AT2 (AT2R) and their modulation of intracellular calcium in vascular endothelial cells (VECs) in general and more particularly of human origin. Using western blots, our results showed that AT1Rs and AT2Rs are present in human VECs (hVECs). Using quantitative 3D confocal imaging, our results showed that AngII is present at the cytoplasmic and nucleoplasmic levels and its relative density is lower in the nucleoplasm...
July 21, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28732093/attitudes-among-transplant-professionals-regarding-shifting-paradigms-in-eligibility-criteria-for-live-kidney-donation
#3
Jeffrey A Lafranca, Emerentia Q W Spoon, Jacqueline van de Wetering, Jan N M IJzermans, Frank J M F Dor
BACKGROUND: The transplant community increasingly accepts extended criteria live kidney donors, however, great (geographical) differences are present in policies regarding the acceptance of these donors, and guidelines do not offer clarity. The aim of this survey was to reveal these differences and to get an insight in both centre policies as well as personal beliefs of transplant professionals. METHODS: An online survey was sent to 1128 ESOT-members. Questions were included about several extended donor criteria; overweight/obesity, older age, vascular multiplicity, minors as donors and comorbidities; hypertension, impaired fasting glucose, kidney stones, malignancies and renal cysts...
2017: PloS One
https://www.readbyqxmd.com/read/28731570/susceptibility-weighted-imaging-and-quantitative-susceptibility-mapping-of-the-cerebral-vasculature-using-ferumoxytol
#4
Saifeng Liu, Jean-Christophe Brisset, Jiani Hu, E Mark Haacke, Yulin Ge
PURPOSE: To demonstrate the potential of imaging cerebral arteries and veins with ferumoxytol using susceptibility weighted imaging (SWI) and quantitative susceptibility mapping (QSM). MATERIALS AND METHODS: The relationships between ferumoxytol concentration and the apparent susceptibility at 1.5T, 3T, and 7T were determined using phantom data; the ability of visualizing subvoxel vessels was evaluated using simulations; and the feasibility of using ferumoxytol to enhance the visibility of small vessels was confirmed in three healthy volunteers at 7T(with doses 1 mg/kg to 4 mg/kg)...
July 21, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28731395/nasoseptal-flap-necrosis-a-rare-complication-of-endoscopic-endonasal-surgery
#5
Joseph D Chabot, Chirag R Patel, Marion A Hughes, Eric W Wang, Carl H Snyderman, Paul A Gardner, Juan C Fernandez-Miranda
OBJECTIVE The vascularized nasoseptal flap (NSF) has become the workhorse for skull base reconstruction during endoscopic endonasal surgery (EES) of the ventral skull base. Although infrequently reported, as with any vascularized flap the NSF may undergo ischemic necrosis and become a nidus for infection. The University of Pittsburgh Medical Center's experience with NSF was reviewed to determine the incidence of necrotic NSF in patients following EES and describe the clinical presentation, imaging characteristics, and risk factors associated with this complication...
July 21, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28730400/evaluation-of-retrobulbar-blood-flow-and-choroidal-thickness-in-patients-with-rheumatoid-arthritis
#6
Ali Kal, Enes Duman, Almila Sarıgül Sezenöz, Mahmut Oğuz Ulusoy, Öznur Kal
PURPOSE: To evaluate whether retrobulbar blood flow and choroidal thickness (CT) are affected in patients with rheumatoid arthritis (RA), and the relationship between these values. METHODS: We evaluated 40 eyes of 20 RA patients and 40 eyes of 20 healthy controls. The enhanced depth imaging optical coherence tomography, color Doppler imaging, was held. Statistical analysis was performed. RESULTS: Peak systolic velocity (PSV) of ophthalmic (OA) and central retinal artery (CRA) were significantly higher in RA...
July 20, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28730399/optical-coherence-tomography-angiography-findings-in-susac-s-syndrome-a-case-report
#7
Rodolfo Mastropasqua, Lisa Toto, Alfonso Senatore, Alessandro D'Uffizi, Piergiorgio Neri, Cesare Mariotti, Marica Tina Maccarone, Luca Di Antonio
PURPOSE: To report clinical features of Susac's syndrome (SS) using optical coherence tomography angiography (OCTA). METHODS: Case report. RESULTS: A 25-year-old Caucasian female with a history of non-pulsatile migraine, tinnitus, and verbal apraxia complaining of peripheral scotoma in left eye due to branch retinal arteriole occlusion (BRAO) was diagnosed as having SS after audiometric test, brain magnetic resonance imaging, and multimodal retinal imaging...
July 20, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28730223/histopathological-diagnosis-and-its-correlations-with-anatomoclinical-features-surgical-approach-and-postoperative-prognosis-in-sacral-tumors
#8
Oana Ilona David, Corina Veronica Lupaşcu-Ursulescu, Cristian Dumitru Lupaşcu, Aurelia Mihaela Sandu, Victor Dan Eugen Strâmbu, Daniel Alin Cristian, Ştefan Iulian Bedereag, Irina Alexandra Calangea, Elena Violeta Radu, IonuŢ Simion Coman, Vlad Andrei Porojan, Valentin Titus Grigorean
INTRODUCTION: Sacral tumors encompass numerous histopathological types. They represent an uncommon pathology and, when diagnosed, they are often in advanced stage of the disease, becoming a therapeutic challenge. The correct treatment of a sacral tumor should be established by a multidisciplinary team that will assess the exact anatomical, imagistic and histopathological characteristic of the tumors thus choosing an optimal surgical approach while taking into consideration the risk of recurrence...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28729834/white-matter-hyperintensity-in-elderly-patients-with-diabetes-mellitus-is-associated-with-cognitive-impairment-functional-disability-and-a-high-glycoalbumin-glycohemoglobin-ratio
#9
Yoshiaki Tamura, Yoshiyuki Kimbara, Takuya Yamaoka, Ken Sato, Yuki Tsuboi, Remi Kodera, Yuko Chiba, Seijiro Mori, Yoshinori Fujiwara, Aya M Tokumaru, Hideki Ito, Takashi Sakurai, Atsushi Araki
Aims: Although evidence has accumulated that white matter hyperintensity (WMH) is associated with the deterioration of cognitive function and impairment of activities of daily living (ADL), the clinical relevance of WMH in elderly patients with diabetes mellitus (DM) is not still clear. The aim of this study was to examine whether WMH volume is associated with ADL and cognitive function and whether glucose control and glucose variability can affect WMH volume in these patients. Methods: This cross-sectional study investigated the associations of WMH with cognitive function and instrumental ADL (IADL), as well as metabolic and vascular risk factors in a total of 178 elderly patients with diabetes...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28729400/vessel-targeted-chemophototherapy-with-cationic-porphyrin-phospholipid-liposomes
#10
Dandan Luo, Jumin Geng, Nasi Li, Kevin A Carter, Shuai Shao, G Ekin Atilla-Gokcumen, Jonathan F Lovell
Cationic liposomes have been used for targeted drug delivery to tumor blood vessels, via mechanisms that are not fully elucidated. Doxorubicin (Dox)-loaded liposomes were prepared that incorporate a cationic lipid; 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP), along with a small amount of porphyrin-phospholipid (PoP). Near infrared (NIR) light induced release of entrapped Dox via PoP-mediated DOTAP photo-oxidation. The formulation was optimized to enable extremely rapid NIR light-triggered Dox release (i...
July 20, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28729296/analysis-of-30-spinal-angiograms-falsely-reported-as-normal-in-18-patients-with-subsequently-documented-spinal-vascular-malformations
#11
P Barreras, D Heck, B Greenberg, J-P Wolinsky, C A Pardo, P Gailloud
BACKGROUND AND PURPOSE: The early diagnosis of spinal vascular malformations suffers from the nonspecificity of their clinical and radiologic presentations. Spinal angiography requires a methodical approach to offer a high diagnostic yield. The prospect of false-negative studies is particularly distressing when addressing conditions with a narrow therapeutic window. The purpose of this study was to identify factors leading to missed findings or inadequate studies in patients with spinal vascular malformations...
July 20, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28728985/adjuvant-hepatic-arterial-infusion-chemotherapy-is-beneficial-for-selective-patients-with-hepatocellular-carcinoma-undergoing-surgical-treatment
#12
Jui-Hu Hsiao, Cheng-Chung Tsai, Tsung-Jung Liang, Chia-Ling Chiang, Huei-Lung Liang, I-Shu Chen, Yu-Chia Chen, Po-Ming Chang, Nan-Hua Chou, Being-Whey Wang
BACKGROUND: Recurrence rate after curative surgical resection of Hepatocellular carcinoma (HCC) remains high. Postoperative hepatic arterial infusion chemotherapy (HAIC) has been suggested to improve survival. This study is to investigate the efficacy of HAIC in the patients with poor tumor factors such as vascular invasion or multiplicity. METHODS: From 2006 to 2014, 221 patients with HCC undergoing hepatectomy and pathologically staged as ≧ T2 (American Joint Committee on Cancer TNM staging system, 7th edition) were included...
July 17, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28728780/detecting-regional-stiffness-changes-in-aortic-aneurysmal-geometries-using-pressure-normalized-strain
#13
Doran S Mix, Ling Yang, Camille C Johnson, Nathan Couper, Ben Zarras, Isaac Arabadjis, Lauren E Trakimas, Michael C Stoner, Steven W Day, Michael S Richards
Transabdominal ultrasound elasticity imaging could improve the assessment of rupture risk for abdominal aortic aneurysms by providing information on the mechanical properties and stress or strain states of vessel walls. We implemented a non-rigid image registration method to visualize the pressure-normalized strain within vascular tissues and adapted it to measure total strain over an entire cardiac cycle. We validated the algorithm's performance with both simulated ultrasound images with known principal strains and anatomically accurate heterogeneous polyvinyl alcohol cryogel vessel phantoms...
July 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28728686/spontaneous-coronary-artery-dissection-associated-with-pregnancy
#14
Marysia S Tweet, Sharonne N Hayes, Elisabeth Codsi, Rajiv Gulati, Carl H Rose, Patricia J M Best
BACKGROUND: Spontaneous coronary artery dissection (SCAD) is the most common cause of pregnancy-associated myocardial infarction and remains poorly characterized. OBJECTIVES: This study sought to assess presentation, clinical factors, and outcomes of pregnancy-associated spontaneous coronary artery dissection (P-SCAD) compared with spontaneous coronary artery dissection not associated with pregnancy (NP-SCAD). METHODS: A Mayo Clinic registry was established in 2010 to include comprehensive retrospective and prospective SCAD data...
July 25, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28728431/radiographic-temporal-subtraction-analysis-can-detect-finger-joint-space-narrowing-progression-in-rheumatoid-arthritis-with-clinical-low-disease-activity
#15
Taichi Okino, Tamotsu Kamishima, Kenneth Lee Sutherland, Jun Fukae, Akihiro Narita, Shota Ichikawa, Kazuhide Tanimura
Background Recent papers suggest that finger joints with positive synovial vascularity (SV) assessed by ultrasonography under clinical low disease activity (CLDA) in rheumatoid arthritis (RA) patients may cause joint space narrowing (JSN) progression. Purpose To investigate the performance of a computer-based method by directly comparing with the conventional scoring method in terms of the detectability of JSN progression in hand radiography of RA patients with CLDA. Material and Methods Fifteen RA patients (13 women, 2 men) with long-term sustained CLDA of >2 years were included...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28728289/-the-protective-effect-of-pigment-epithelial-derived-factor-modified-human-umbilical-cord-mesenchymal-stem-cells-on-rats-with-diabetic-retinopathy
#16
W Zhang, H T Duan, S Chen, Y X Wang, J H Kong, M Dong, X Bi, J Song
Objective: To investigate the effect of pigment epithelial-derived factor (PEDF) gene-modified human umbilical cord mesenchymal stem cells (MSC) on rats with diabetic retinopathy (DR). Methods: Experimental study. Human umbilical cord MSC were transfected by lentivirus packaging PEDF-MSC-green fluorescent protein (GFP) and GFP-MSC plasmid vectors, and the expression of PEDF and vascular endothelial growth factor (VEGF) was measured in the cell culture medium. Fifty adult male Sprague-Dawley rats were randomly divided into five groups: normal control group (group A), DR control group (group B), phosphate-buffered saline (PBS) treated group (group C), GFP-MSC treated group (group D) and PEDF-MSC-GFP treated group (group E), with 10 rats in each group...
July 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728187/in-vivo-microvascular-pattern-of-solitary-juxtapapillary-capillary-hemangioma-on-oct-angiography
#17
M B Thirumalesh, Astha Jain, Sumeet Agrawal, K Bhujang Shetty
Juxtapapillary capillary hemangioma (JCH) is a vascular hamartoma. Fluorescein fundus angiography aids in diagnosis. The vascular morphology of this tumor has not been documented with optical coherence tomography angiography (OCTA), a new, noninvasive diagnostic modality that provides high-resolution images of vascular pattern based on blood flow in the retina and choroid. Although mainly a clinical diagnosis, OCTA helps in studying the intrinsic vascularity of the tumor and helps in differentiating it from other vascular tumors...
July 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28728184/multi-spectral-imaging-of-circumscribed-choroidal-hemangioma-introduction
#18
Nicola Y Gan, Cheryl Zimmer, Wai-Ching Lam
BACKGROUND AND OBJECTIVE: To illustrate the features of a circumscribed choroidal hemangioma (CCH) using Annidis RHA multi-spectral imaging (MSI) technology (Annidis Corporation, Ottawa, Canada). This novel imaging technique uses non-overlapping, narrow-band LED light sources ranging from 520 nm to 940 nm to create a monochromatic series of en face fundus images and oxy/deoxyhemoglobin contrasted maps of the retina and choroid. PATIENTS AND METHODS: Annidis RHA MSI images were taken of a 67-year-old Chinese male with CCH...
July 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28727884/oct-angiography-and-ellipsoid-zone-mapping-of-macular-telangiectasia-type-2-from-the-avatar-study
#19
Anne P Runkle, Peter K Kaiser, Sunil K Srivastava, Andrew P Schachat, Jamie L Reese, Justis P Ehlers
Purpose: To evaluate alterations on optical coherence tomography angiography (OCT-A) and quantitatively assess alterations in the ellipsoid zone (EZ) in eyes with macular telangiectasia type 2 (MacTel type 2). Methods: The Observational Assessment of Visualizing and Analyzing Vessels With Optical Coherence Tomography Angiography in Retinal Diseases study is an institutional review board-approved prospective, observational study investigating OCT-A in macular disease...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28727709/transforaminal-percutaneous-endoscopic-discectomy-and-foraminoplasty-after-lumbar-spinal-fusion-surgery
#20
Jian-Jun Wu, Hui-Zhen Chen, Changkun Zheng
BACKGROUND: The most common causes of pain following lumbar spinal fusions are residual herniation, or foraminal fibrosis and foraminal stenosis that is ignored, untreated, or undertreated. The original surgeon may advise his patient that nothing more can be done in his opinion that the nerve was visually decompressed by the original surgery. Post-operative imaging or electrophysiological assessment may be inadequate to explain all the reasons for residual or recurrent symptoms. Treatment of failed lumbar spinal fusions by repeat traditional open revision surgery usually incorporates more extensive decompression causing increased instability and back pain...
July 2017: Pain Physician
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