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Ilkay Kilic Muftuoglu, Nadia Mendoza, Raouf Gaber, Mostafa Alam, Qisheng You, William R Freeman
PURPOSE: To evaluate the integrity of outer retina layers after resolution of central involved diabetic macular edema (DME) and to demonstrate the effect of various baseline factors for the final vision and final external limiting membrane (ELM) integrity. METHODS: Fifty-nine eyes of 48 patients with resolved DME were included. Several optical coherence tomography parameters including central subfield thickness, maximum foveal thickness, foveal center point thickness, and the extent of the ellipsoidal (ISe) layer and ELM damage were assessed at the time of DME and after resolution of DME...
January 13, 2017: Retina
Qingyong Meng, Jun Chen
To accurately compute the rates of the abstraction channels of hydrogen plus ethane (Et), propane (Pr), and dimethyl ether (DME), ring-polymer molecular dynamics (RPMD) method is used in conjunction with the recently constructed local permutation invariant polynomial neural-networks potential energy surface of the parent H + CH4 system [Q. Meng et al., J. Chem. Phys. 144, 154312 (2016)]. For H + Et, one of the H atoms in CH4 of the parent system is replaced by a methyl group, while for the H + DME reaction, it is replaced by the methoxyl group...
January 14, 2017: Journal of Chemical Physics
Lukman A Solola, Alexander V Zabula, Walter L Dorfner, Brian C Manor, Patrick J Carroll, Eric J Schelter
A series of alkali metal capped cerium(IV) imido complexes, [M(solv)x][Ce=N(3,5-(CF3)2C6H3)(TriNOx)] (M = Li, K, Rb, Cs; solv = TMEDA, THF, Et2O or DME), was isolated and fully characterized. An X-ray structural investigation of the cerium imido complexes demonstrated the impact of the alkali metal counterions on the geometry of the [Ce=N(3,5-(CF3)2C6H3)(TriNOx)]- moiety. Substantial shortening of the Ce=N bond was observed with increasing size of the alkali metal cation. The first complex featuring an unsupported, terminal multiple bond between a Ce(IV) ion and a ligand fragment was also isolated by encapsulation of a Cs+ counterion with 2...
January 11, 2017: Journal of the American Chemical Society
Nimet Yesim Ercalik, Serhat Imamoglu, Esra Turkseven Kumral, Nursal Melda Yenerel, Handan Bardak, Yavuz Bardak
Purpose: To investigate the influence of the epiretinal membrane (ERM) on intravitreal ranibizumab (IVR) therapy for diabetic macular edema (DME). Methods: This retrospective study included 56 eyes of 48 patients with DME divided into two groups: the DME with ERM (study) and only DME (control) groups. Changes in the central macular thickness (CMT) and best-corrected visual acuity (BCVA) were evaluated. Results: In the study group, although the CMT was significantly reduced following the first injection (p<0...
November 2016: Arquivos Brasileiros de Oftalmologia
Yuting Chen, Luyang Zhao, Jianzhuang Jiang
Two new boron-dipyrromethenes decorated with 8-hydroxyquinoline-naphthoate moiety, namely 4,4-difluoro-8-(5-(8-hydroxyquinoline-naphthoate))-3,5-dimethyl-4-bora-3a,4a-diaza-s-indacene (8-HQ-N-DMe-Bodipy) (1) and 4,4-difluoro-8-(5-(8-hydroxyquinoline-naphthoate))-1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene (8-HQ-N-TMe-Bodipy) (2) have been synthesized. Single crystal X-ray diffraction analysis discloses the very much similar steric arrangement of 8-hydroxyquinoline-naphthoate moiety in these two compounds as revealed by the close torsion angle of C-C-O-C bridge, 174...
December 21, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Rasha Barham, Hala El Rami, Jennifer K Sun, Paolo S Silva
Diabetes mellitus is a chronic disease that affects 415 million people worldwide. Despite treatment advances, diabetic eye disease remains a leading cause of vision loss worldwide. Diabetic macular edema (DME) is a common cause of vision loss in diabetic patients. The pathophysiology is complex and involves multiple pathways that ultimately lead to central retinal thickening and, if untreated, visual loss. First-line treatment of DME has evolved from focal/grid laser established by the Early Treatment of Diabetic Retinopathy Study (ETDRS) to intravitreous pharmacologic therapy...
2017: Seminars in Ophthalmology
N Sayah, E Weiss, W Watkins, J Siebers
PURPOSE: To evaluate the dose-mapping error (DME) inherent to conventional dose-mapping algorithms as a function of dose-matrix resolution. METHODS: As DME has been reported to be greatest where dose-gradients overlap tissue-density gradients, non-clinical 66 Gy IMRT plans were generated for 11 lung patients with the target edge defined as the maximum 3D density gradient on the 0% (end of inhale) breathing phase. Post-optimization, Beams were copied to 9 breathing phases...
June 2016: Medical Physics
Yu Wang, Yaonan Zhang, Zhaomin Yao, Ruixue Zhao, Fengfeng Zhou
Non-lethal macular diseases greatly impact patients' life quality, and will cause vision loss at the late stages. Visual inspection of the optical coherence tomography (OCT) images by the experienced clinicians is the main diagnosis technique. We proposed a computer-aided diagnosis (CAD) model to discriminate age-related macular degeneration (AMD), diabetic macular edema (DME) and healthy macula. The linear configuration pattern (LCP) based features of the OCT images were screened by the Correlation-based Feature Subset (CFS) selection algorithm...
December 1, 2016: Biomedical Optics Express
Giacomo A Panozzo, Elena Gusson, Giorgio Panozzo, Giulia Dalla Mura
PURPOSE: To determine the potential role of intraoperative dexamethasone intravitreal implant (DEX-I) in reducing diabetic macular edema (DME) worsening after phacoemulsification. METHODS: This was a prospective study on 19 eyes of 19 patients with type 2 diabetes mellitus with DME and cataract. Mean preoperative Early Treatment Diabetic Retinopathy Study visual acuity (VA) was 16.7 letters. Mean foveal thickness (FT) was 451 μm. The DME was naive in 11 eyes and refractory in 8 eyes...
December 16, 2016: European Journal of Ophthalmology
Antonio Pinna, Francesco Blasetti, Giuseppe D'Amico Ricci, Francesco Boscia
PURPOSE: To evaluate the efficacy and safety of topical bromfenac in patients with newly diagnosed diabetic macular edema (DME). METHODS: In this pilot study including 17 patients with monocular, newly diagnosed DME, diagnosis of DME was established by the detection of retinal thickening at or within 500 μm of the center of the macula on ophthalmoscopic examination, according to the Early Treatment Diabetic Retinopathy Study classification. Central macular thickness (CMT) was determined by optical coherence tomography...
November 16, 2016: European Journal of Ophthalmology
Charles C Wykoff, Dennis M Marcus, Edoardo Midena, Jean-François Korobelnik, Namrata Saroj, Andrea Gibson, Robert Vitti, Alyson J Berliner, Zinaria Williams Liu, Oliver Zeitz, Carola Metzig, Thomas Schmelter, Jeffrey S Heier
Importance: Information on the effect of anti-vascular endothelial growth factor therapy in eyes with diabetic macular edema (DME) with vision loss after macular laser photocoagulation is clinically valuable. Objective: To evaluate visual and anatomic outcomes in a subgroup of macular laser photocoagulation treatment control (hereafter laser control) eyes with substantial vision loss receiving treatment with intravitreal aflibercept injection. Design, Setting, and Participants: This investigation was a post hoc analysis of a subgroup of laser control eyes in 2 phase 3 trials-VISTA (Study of Intravitreal Aflibercept Injection in Patients With Diabetic Macular Edema) and VIVID (Intravitreal Aflibercept Injection in Vision Impairment Due to DME)-in a multicenter setting...
December 22, 2016: JAMA Ophthalmology
Szilárd Kiss, Hitesh S Chandwani, Ashley L Cole, Vaishali D Patel, Orsolya E Lunacsek, Pravin U Dugel
PURPOSE: To examine the comorbidity profile and update estimates of health care resource utilization for commercially insured, working-age adults with diabetic macular edema (DME) relative to a matched comparison group of diabetic adults without DME. Additional comparisons were made in the subgroup of pseudophakic patients. PATIENTS AND METHODS: A retrospective matched-cohort study of commercially insured diabetic adults aged 18-63 years was conducted using medical and outpatient pharmacy claims (July 1, 2008-June 30, 2013)...
2016: Clinical Ophthalmology
Jiangnan He, Xian Xu, Jianfeng Zhu, Bijun Zhu, Bo Zhang, Lina Lu, Xiangui He, Xuelin Bai, Xun Xu, Haidong Zou
PURPOSE: To calculate crystalline lens power and to determine the relationship between ocular biometry and diabetic retinopathy (DR) in an adult population with type 2 diabetes mellitus (T2DM). DESIGN: Cross-sectional, population-based study. PARTICIPANTS: Patients with T2DM from the Beixinjing community, Changning district, Shanghai. METHODS: Random clustering sampling was used to identify adults with T2DM in the Beixinjing community...
December 16, 2016: Ophthalmology
Anastasia O Gunina, Anna I Krylov
We apply high-level ab initio methods to describe the electronic structure of small clusters of ammonia and dimethyl ether (DME) doped with sodium, which provide a model for solvated electrons. We investigate the effect of the solvent and cluster size on the electronic states. We consider both energies and properties, with a focus on the shape of the electronic wave function and the related experimental observables such as photoelectron angular distributions. The central quantity in modeling photoionization experiments is the Dyson orbital, which describes the difference between the initial N-electron and final (N-1)-electron states of a system...
December 15, 2016: Journal of Physical Chemistry. A
R Schnabel, J Tan, T Cullip, G Guinan, C Cameron
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
Gaonan Wang, Xu You, Yi Gan, Yuanhong Liu
A new method for the synthesis of δ- and α-carbolines through Ni-catalyzed [2 + 2 + 2] cycloaddition of ynamide-nitriles or alkyne-cyanamides with alkynes has been developed. The catalytic system of NiCl2(DME)/dppp/Zn with a low-cost Ni(II)-precursor was first utilized in Ni-catalyzed [2 + 2 + 2] cycloaddition reactions, and the in situ generated Lewis acid may play an important role for the successful transformation. Not only internal alkynes but also terminal alkynes undergo the desired cycloaddition reactions efficiently to furnish the carboline derivatives with wide diversity and functional group tolerance...
December 14, 2016: Organic Letters
Thommy Svahn, Karin Mellgren, Arja Harila-Saari, Ann Åsberg, Jukka Kanerva, Ólafur Jónsson, Goda Vaitkeviciene, Torben Stamm Mikkelssen, Kjeld Schmiegelow, Jesper Heldrup
BACKGROUND: Carboxypeptidase G2 (CPDG2 ) can be used as rescue treatment in cases of delayed methotrexate elimination (DME) and Mtx-induced nephrotoxicity. PROCEDURE: Between July 2008 and December 2014, all children (1.0-17.9 years) in the Nordic countries diagnosed with Philadelphia chromosome negative acute lymphoblastic leukemia (ALL) were treated according to the Nordic Organization for Pediatric Hematology and Oncology (NOPHO) ALL 2008 protocol, including administration of six to eight high-dose (5 g/m(2) /24 hr) Mtx (HDMtx) courses...
December 14, 2016: Pediatric Blood & Cancer
Yuki Mori, Kiyoshi Suzuma, Akihito Uji, Kenji Ishihara, Shin Yoshitake, Masahiro Fujimoto, Yoko Dodo, Tatsuya Yoshitake, Yuko Miwa, Tomoaki Murakami
Anti-vascular endothelial growth factor drugs are the first-line treatment for diabetic macular edema (DME), although the mechanism of the visual acuity (VA) improvement remains largely unknown. The association between photoreceptor damage and visual impairment encouraged us to retrospectively investigate the changes in the foveal photoreceptors in the external limiting membrane (ELM) and ellipsoid zone (EZ) on spectral-domain optical coherence tomography (SD-OCT) images in 62 eyes with DME treated with intravitreal ranibizumab (IVR) injections...
December 14, 2016: Scientific Reports
Michael A Boreen, Bernard F Parker, Trevor D Lohrey, John Arnold
The reaction of 3 equiv of Li-C6H3-2,6-(C6H4-4-(t)Bu)2 (Terph-Li) with UI3(1,4-dioxane)1.5 led to the formation of the homoleptic uranium(III) tris(aryl) complex (Terph)3U (1). The U-C bonds are reactive: treatment with excess (i)PrN═C═N(i)Pr yielded the double-insertion product [TerphC(N(i)Pr)2]2U(Terph) (2). Complexes 1 and 2 were characterized by X-ray crystallography, which showed that the U-C bond length in 2 (2.624(4) Å) is ∼0.1 Å longer than the average U-C bond length in 1 (2.522(2) Å). Thermal decomposition of 1 yielded Terph-H as the only identifiable product; the process is unimolecular with activation parameters ΔH(⧧) = 21...
December 14, 2016: Journal of the American Chemical Society
Wei Yin, Alexis Grimaud, Florent Lepoivre, Chunzhen Yang, Jean Marie Tarascon
The Li-O2/CO2 battery with high capacity has recently been proposed as a new protocol to convert CO2. However, the fundamental mechanism for the reaction still remains hazy. Here, we investigated the discharge processes of Li-O2/CO2 (70%/30%) batteries in two solvents, dimethyl sulfoxide (DMSO) and 1,2-dimethoxyethane (DME). During discharge, both solvents initially show the reduction of oxygen. However, afterward, the solvent affects the reaction pathways of superoxide species by solvating Li(+) with different strength, depending on the so-called donor number...
December 19, 2016: Journal of Physical Chemistry Letters
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