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Combined descemet stripping automated endothelial keratoplasty and intravitreal dexamethasone implant for concomitant pseudophakic bullous keratopathy and cystoid macular edema

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International Journal of Ophthalmology(English edition) 2019年第5期12卷 866-869页

作者： Gabriella Cirigliano Marco R Pastore Alberto A Perrotta chiara de giacinto Daniele Tognetto Eye Clinic Department of Medical Surgical Sciences and HealthUniversity of Trieste

dear Editor,Endothelial cell density decreases with age and in various ocular conditions,including corneal endotheliitis,uveitis,pseudoexfoliation syndrome,and birth injury(1)The reduction of endothelial cell density is exacerbated over time after intraocular surgery(1)descemet stripping automated endothelial keratoplasty(DSAEK)is considered the primary procedure for patients with only endothelial dysfunction.

关键词： PBK Figure Combined descemet stripping automated endothelial keratoplasty and intravitreal dexamethasone implant for concomitant pseudophakic bullous keratopathy and cystoid macular edema IOL IOP

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Rebound Tonometry in Cataract Surgery: Comparison with Goldmann Applanation Tonometry

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Open Journal of Ophthalmology 2018年第1期8卷 1-11页

作者： chiara de giacinto Rossella D’Aloisio Sara Trovarelli Agostino Accardo Odilla Vattovani Daniele Tognetto department of Medicine Surgery and Health Sciences University of Trieste Trieste Italy department of Industrial and Information Technology University of Trieste Trieste Italy

Purpose: to compare the rebound tonometer ICare? (RT) with the Goldmann applanation tonometer (GAT) in cataract surgery and to assess the influence of central corneal thickness (CCT) on intraocular pressure (IOP) measurements. design: retrospective, comparative study. Methods: a total of 472 patients underwent IOP measurement using RT (time 0 = RTa). GAT IOP measurement was performed 5 minutes later, followed by a second RT IOP measurement after other 5 minutes (RTa + 10 min = RTb). CCT was obtained by ultrasound pachymetry. In 106 patients IOP was measured by means of RT and GAT before clear corneal cataract surgery (RT1 and GAT1) and at one day postoperatively (RT2 and GAT2). Results: RT IOP values > 5 mmHg were overestimated, while RT IOP values Conclusion: our results showed a good agreement between measurements obtained with RT and GAT in pre and postoperative cataract surgery, although a significant statistically difference was found between RT and GAT measurements performed postoperatively. Moreover, CCT is a parameter to be considered for the IOP measurement, especially for values obtained with RT.

关键词： Applanation Tonometer Cataract Surgery Intraocular Pressure Pachymetry Rebound Tonometer

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High-Resolution Crystal Structure and Redox Properties of Chloroplastic Triosephosphate Isomerase from Chlamydomonas reinhardtii

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Molecular Plant 2014年第1期7卷 101-120页

作者： Mirko Zaffagnini Laure Michelet chiara Sciabolini Nastasia Di giacinto Samuel Morisse Christophe H. Marchand Paolo Trost Simona Fermani Stephane D Lemaire Laboratoire de Biologie Moleculaire et Cellulaire des Eucaryotes FRE3354 Centre National de la Recherche Scientifique Universite Pierre et Marie Curie Institut de Biologie Physico-Chimique 13 rue Pierre et Marie Curie 75005 Paris France Laboratory of Plant Redox Biology Department of Pharmacy and Biotechnology (FaBiT) University of Bologna via Irnerio 42 40126 Bologna Italy department of Chemistry 'G. Ciamician' University of Bologna via Selmi 2 40126 Bologna Italy

Triosephosphate isomerase （TPI） catalyzes the interconversion of glyceraldehyde-3-phosphate to dihydroxyacetone phosphate. Photosynthetic organisms generally contain two isoforms of TPI located in both cytoplasm and chloroplasts. While the cytoplasmic TPI is involved in the glycolysis, the chloroplastic isoform participates in the Calvin-Benson cycle, a key photosynthetic process responsible for carbon fixation. Compared with its cytoplasmic counterpart, the functional features of chloroplastic TPI have been poorly investigated and its three-dimensional structure has not been solved. Recently, several studies proposed TPI as a potential target of different redox modifications including dithiol/disulfide interchanges, glutathionylation, and nitrosylation. However, neither the effects on protein activity nor the molecular mechanisms underlying these redox modifications have been investigated. Here, we have produced recombinantly and purified TPI from the unicellular green alga Chlamydomonas reinhardtii （Cr）. The biochemical properties of the enzyme were delineated and its crystallographic structure was determined at a resolution of 1.1 A. CrTPI is a homodimer with subunits containing the typical （β/α）8-barrel fold. Although no evidence for TRX regulation was obtained, CrTPI was found to undergo glutathionylation by oxidized glutathione and trans-nitrosylation by nitrosoglutathione, confirming its sensitivity to multiple redox modifications.

关键词： triosephosphate isomerase three-dimensional structure TIM-barrel thiol-based redox regulation transnitrosylation.

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