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Kyvernitakis I, Rosner M, Birk A, Goodman L, Herlands L, Wohlmuth P, Laurie M, Millard S, Kush M, Miller J, Baschat AA. Stage based recipient and donor outcome in twin-to-twin transfusion syndrome treated by fetoscopic laser surgery using Solomon technique. Ultrasound Obstet Gynecol 2024. [PMID: 38379440 DOI: 10.1002/uog.27620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/03/2024] [Accepted: 02/04/2024] [Indexed: 02/22/2024]
Abstract
OBJECTIVE To evaluate twin survival stratified by Quintero stage in patients with twin-to-twin transfusion syndrome (TTTS) after Solomon laser treatment. METHODS Single center cohort of consecutive twin pregnancies treated with Solomon laser for TTTS. Preoperative Quintero stage, perioperative characteristics and obstetric factors were related to neonatal survival of the recipient and donor at discharge. Determinants of twin survival were evaluated using univariate, logistic regression and cumulative survival probability analyses. RESULTS Of 402 twins with TTTS, 80 (19.9%) had stage I, 126 (31.3%) stage II, 169 (42%) stage III and 27 (6.7%) stage IV. Post laser TAPS or recurrent TTTS occurred in 19 (4.7%) patients and 11 (2.7%) required repeat laser. Preterm premature rupture of membranes occurred in 150 (37.3%) patients and median gestational age of delivery 32+1 weeks. In 303 (75.4%) both twins were alive at discharge; [66 (82.5%) in stage I, 101 (80.2%) in stage II, 114 (67.5%) in stage III and 22 (81.5%) in stage IV, p=0.062]. Compared to recipients, donor survival was only lower in stage III (155 (91.7%) recipients vs 118 (69.8%) donors, Chi square 24.685, p<0.0001). Larger intertwin size discordance and umbilical artery (UA) end-diastolic velocity (EDV) determined donor demise (Nagelkerke R2 0.38, P<0.001). Overall, spontaneous post laser donor demise accounted for the majority (39.5%) of all losses. Cumulative donor survival decreased from 92% to 65% with size discordance >30% and 48% when UA EDV was absent (p<0.001). CONCLUSION Solomon laser achieves TTTS resolution and double survival in a high proportion of cases. Recipient and donor survival is comparable unless there is significant size discordance and placental dysfunction. This degree of unequal placental sharing, typically found in stage III, is the primary factor preventing double survival due to a higher rate of donor demise. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- I Kyvernitakis
- Section for Prenatal Diagnosis and Fetal therapy, Asklepios Klinik Barmbek, Asklepios Medical School, University of Semmelweis, Hamburg, Germany
| | - M Rosner
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A Birk
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - L Goodman
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - L Herlands
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P Wohlmuth
- Section for Prenatal Diagnosis and Fetal therapy, Asklepios Klinik Barmbek, Asklepios Medical School, University of Semmelweis, Hamburg, Germany
| | - M Laurie
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S Millard
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Kush
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J Miller
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A A Baschat
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Itah S, Elad D, Jaffa AJ, Grisaru D, Rosner M. Transmembrane Mucin Response in Conjunctival Epithelial Cells Exposed to Wall Shear Stresses. Int J Mol Sci 2023; 24:ijms24076589. [PMID: 37047561 PMCID: PMC10095083 DOI: 10.3390/ijms24076589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/08/2023] [Accepted: 03/20/2023] [Indexed: 04/05/2023] Open
Abstract
Human conjunctival epithelium cells (HCEC) line the inner surface of the eyelid and cover the sclera and are continuously subjected to wall shear stresses (WSS). The effects of external forces on the conjunctival epithelium are not fully known. The conjunctival epithelium contains stratified squamous cells that synthesize the membrane-spanning mucins MUC1 and MUC16, which play important roles in protecting the ocular surface. Alterations in both gel-forming and membrane-tethered mucins occur in drying ocular surface diseases. The aim of this study was to explore the mechanobiological characteristics of transmembrane mucin secretion and cellular alterations of primary HCEC exposed to airflow-induced WSS perturbations. We exposed the HCEC to a steady WSS of 0.5 dyne/cm2 for durations of 15 and 30 min. Cytoskeletal alterations and MUC1 secretions were studied using immunohistochemically fluorescent staining with specific antibodies. We investigated for the first time an in vitro model of membrane-tethered mucin secretion by HCEC in response to WSS. The exposure of HCEC to WSS increased the polymerization of F-actin, altered the cytoskeletal shape and reduced the secretion of membrane-tethered MUC1.
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Affiliation(s)
- Shir Itah
- Department of Biomedical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - David Elad
- Department of Biomedical Engineering, Faculty of Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Ariel J. Jaffa
- Department of Obstetrics and Gynecology, Tel-Aviv University, Tel-Aviv 69978, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv 69978, Israel
| | - Dan Grisaru
- Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv 69978, Israel
- Department of Gynecological Oncology, Lis Maternity Hospital, Tel-Aviv Medical Center, Tel-Aviv 64239, Israel
| | - Mordechai Rosner
- Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv 69978, Israel
- Department of Ophthalmology, Sheba Medical Center, Ramat-Gan 52620, Israel
- Assuta Medical Centers, Tel-Aviv 69710, Israel
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Tedjawirja VN, van Klink JM, Haak MC, Klumper FJ, Middeldorp JM, Miller JL, Rosner M, Baschat AA, Lopriore E, Oepkes D. Questionable benefit of intrauterine transfusion following single fetal death in monochorionic twin pregnancy. Ultrasound Obstet Gynecol 2022; 59:824-825. [PMID: 35137996 DOI: 10.1002/uog.24876] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/29/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Affiliation(s)
- V N Tedjawirja
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - J M van Klink
- Department of Medical Psychology, Leiden University Medical Center, Leiden, The Netherlands
| | - M C Haak
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - F J Klumper
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - J M Middeldorp
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
| | - J L Miller
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - M Rosner
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - A A Baschat
- Johns Hopkins Center for Fetal Therapy, Department of Gynecology and Obstetrics, Baltimore, MD, USA
| | - E Lopriore
- Department of Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| | - D Oepkes
- Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands
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4
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Faden MS, Laurie M, Miller JL, Millard S, Rosner M, Baschat AA. Precise anatomical definition of fetal spina bifida using standardized three-dimensional annotation-assisted multiplanar volume contrast ultrasound imaging. Ultrasound Obstet Gynecol 2022; 59:122-124. [PMID: 34254390 DOI: 10.1002/uog.23737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/15/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Affiliation(s)
- M S Faden
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Laurie
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J L Miller
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - S Millard
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Rosner
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A A Baschat
- Center for Fetal Therapy, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Zloto O, Weissman A, Moroz I, Weidenfeld J, Ben Simon G, Sagiv O, Rosner M, Priel A. Kelly Punch Punctoplasty and Simple Punctal Dilatation Are Equally Effective for Punctal Stenosis: A Prospective Study. Ophthalmic Plast Reconstr Surg 2021; 37:546-550. [PMID: 33587416 DOI: 10.1097/iop.0000000000001940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE To examine the clinical, imaging, and histopathologic differences between Kelly punch punctoplasty and punctal dilatation, both with mini Monoka stent insertion. METHODS This is a prospective, comparative clinical study. Patients with bilateral punctal stenosis and for whom surgery was advised participated in the study. The right eye underwent Kelly punch punctoplasty and the left eye simple punctal dilatation, both with mini Monoka stents were participated. Data were collected and analyzed before and 3 months following the procedure and included the degree of epiphora (Munk score) and punctal size as measured by anterior segment optical coherence tomography (AC- OCT). All specimens removed by the Kelly punch punctoplasty were sent for histopathologic evaluation, including Masson's trichome muscle staining. RESULTS The study included 46 eyes of 23 patients (4 males and 19 females) whose mean age at presentation was 60.43 ± 14.81 years (range 19-84 years). There was a significant decrease in the Munk score after both punctoplasties compared with baseline values (P < 0.01, matched pairs). There were no significant differences between groups in the delta Munk score. There was a significant increase in punctal size after both procedures compared with baseline values as measured by AS-OCT. Horner-Duverney's muscle was visible in only 3 of the 23 (13.04%) specimens from patients who underwent the Kelly punch punctoplasty. CONCLUSIONS The Kelly punch punctoplasty and the simple dilator punctoplasty, both with stents, are equally effective treatments for epiphora due to acquired punctal stenosis. Only a few specimens removed during the Kelly punch method show muscle fibers.
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Affiliation(s)
| | | | | | - Jonathan Weidenfeld
- Institute of Pathology, Sheba Medical Center, Tel Hashomer, Israel, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Zloto O, Skaat A, Fabian ID, Rosner M, Ziv H, Leshno A, Melamed S. The distribution of relaxin receptors in the anterior segment of primary open-angle glaucoma patients. Indian J Ophthalmol 2021; 68:2117-2120. [PMID: 32971620 PMCID: PMC7728022 DOI: 10.4103/ijo.ijo_2008_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Purpose: Relaxin is a polypeptide hormone produced by the corpus luteum and the decidua in females and by the prostate in males. It has vasodilatory and antifibrotic effects. In the past, it has been reported that injection of relaxin hormone has caused a reduction in the intraocular pressure although its mechanism has not yet been fully understood and the expression of relaxin receptors has not yet been evident in the human eye. Therefore, the purpose of this current study was to examine the presence of relaxin receptors in the human eye anterior segment. Methods: This is an interventional non-randomized study. Patients with primary open-angle glaucoma who underwent trabeculectomy were recruited. During the surgery, a punch biopsy (including the cornea, sclera, trabecular meshwork, and Schlemm's canal) was taken and stained with hematoxylin-eosin, and immunohistochemistry staining for relaxin/insulin-like family peptide receptor 1 (RXFP1). Results: A positive staining was noted for RXFP1 in the inner uveal, corneoscleral, and cribriform meshwork and Schlemm's canal's endothelium. Negative staining for RXFP1 was noted in the cornea and sclera. Conclusion: RXFP1 is present in the anterior segment drainage system of the human eye. Therefore, this receptor may have an active role in regulating the outflow facility and in the reduction of intraocular pressure.
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Affiliation(s)
- Ofira Zloto
- The Sam Rothberg Glaucoma Center, Goldschleger Eye Institute, Sheba Medical, Ramat Gan; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alon Skaat
- The Sam Rothberg Glaucoma Center, Goldschleger Eye Institute, Sheba Medical, Ramat Gan; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ido Didi Fabian
- The Sam Rothberg Glaucoma Center, Goldschleger Eye Institute, Sheba Medical, Ramat Gan; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mordechai Rosner
- The Sam Rothberg Glaucoma Center, Goldschleger Eye Institute, Sheba Medical, Ramat Gan; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hana Ziv
- The Sam Rothberg Glaucoma Center, Goldschleger Eye Institute, Sheba Medical, Ramat Gan; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ari Leshno
- The Sam Rothberg Glaucoma Center, Goldschleger Eye Institute, Sheba Medical, Ramat Gan; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shlomo Melamed
- The Sam Rothberg Glaucoma Center, Goldschleger Eye Institute, Sheba Medical, Ramat Gan; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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7
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Basov S, Varssano D, Platkov M, Gabay I, Rosner M, Barequet I, Rattunde M, Wagner J, Harlev M, Ofer D, Nisky I, Dankner Y, Katzir A. Strong bonding of corneal incisions using a noncontact fiber-optic laser soldering method. J Biomed Opt 2019; 24:1-9. [PMID: 31884746 PMCID: PMC7006038 DOI: 10.1117/1.jbo.24.12.128002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 11/11/2019] [Indexed: 05/30/2023]
Abstract
Suturing of corneal incisions requires significant skill. We demonstrate a noncontact method that will simplify the bonding process. 5-mm-long penetrating vertical and slanted incisions were made in corneas of eyes, extracted from dead piglets. A fiber-optic laser system was used for laser soldering of the incisions, under close temperature control, using albumin solder. The burst-pressure PB immediately after the soldering was found to be PB ≈ 92 and 875 mmHg, for vertical and slanted incisions, respectively. PB = 875 mmHg is an exceptionally high figure, ≈10 times the clinically acceptable value for sutured incisions. Laser soldering was then performed on penetrating incisions made in the corneas of live healthy piglets, of weight ≈10 Kg. After a healing period, the eyes were extracted, and the corneas were examined by histopathology and by optical coherence tomography. Our method immediately generated watertight and strong bonding without noticeable corneal shape distortion. These results would be beneficial for cataract surgery and for corneal transplantations. The fiber-optic system makes it much easier to bond corneal incisions. In the future, laser soldering could be automated and efficiently used by less experienced surgeons, thereby reducing the workload on the experienced ones.
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Affiliation(s)
- Svetlana Basov
- Tel-Aviv University, Department of Biomedical Engineering, Tel Aviv, Israel
| | - David Varssano
- Tel-Aviv University, Tel-Aviv Sourasky Medical Center and Sackler Faculty of Medicine, Department of Ophthalmology, Tel-Aviv, Israel
| | - Max Platkov
- Nuclear Research Center Negev, Beer-Sheva, Israel
| | - Ilan Gabay
- Tel-Aviv University, School of Physics and Astronomy, Tel-Aviv, Israel
| | - Mordechai Rosner
- Tel Aviv University, Goldschleger Eye Institute, Sheba Medical Center, Ramat Gan, and Sackler Faculty of Medicine, Tel-Aviv, Israel
| | - Irina Barequet
- Tel Aviv University, Goldschleger Eye Institute, Sheba Medical Center, Ramat Gan, and Sackler Faculty of Medicine, Tel-Aviv, Israel
| | - Marcel Rattunde
- Fraunhofer-Institut für Angewandte Festkörperphysik, Freiburg, Germany
| | - Joachim Wagner
- Fraunhofer-Institut für Angewandte Festkörperphysik, Freiburg, Germany
| | - Mickey Harlev
- Tel-Aviv University, Veterinary Service Center, Sackler Faculty of Medicine, Tel-Aviv, Israel
| | - Doron Ofer
- Lahav Research Institute, Kibbutz Lahav, D.N. Negev, Israel
| | - Ilana Nisky
- Ben-Gurion University of the Negev, Department of Biomedical Engineering, Beer-Sheva, Israel
| | - Yair Dankner
- Shenkar College of Engineering and Design, Ramat-Gan, Israel
| | - Abraham Katzir
- Tel-Aviv University, School of Physics and Astronomy, Tel-Aviv, Israel
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Storm Van's Gravesande K, Calabrese P, Blaschek A, Rostásy K, Huppke P, Rothe L, Mall V, Kessler J, Kalbe E, Dornfeld E, Elpers C, Lohmann H, Weddige A, Hagspiel S, Kirschner J, Brehm M, Blank C, Schubert J, Schimmel M, Pacheè S, Mohrbach M, Karenfort M, Kamp G, Lücke T, Neumann H, Lutz S, Gierse A, Sievers S, Schiffmann H, de Soye I, Trollmann R, Candova A, Rosner M, Neu A, Romer G, Seidel U, John R, Hofmann C, Schulz, Kinder S, Bertolatus A, Scheidtmann K, Lasogga R, Leiz S, Alber M, Kranz J, Bajer-Kornek B, Seidl R, Novak A. The Multiple Sclerosis Inventory of Cognition for Adolescents (MUSICADO): A brief screening instrument to assess cognitive dysfunction, fatigue and loss of health-related quality of life in pediatric-onset multiple sclerosis. Eur J Paediatr Neurol 2019; 23:792-800. [PMID: 31551133 DOI: 10.1016/j.ejpn.2019.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 07/23/2019] [Accepted: 08/22/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Screening for cognitive impairment (CI), fatigue and also Health-related quality of life (HRQoL) in patients with pediatric-onset multiple sclerosis (POMS) is of utmost importance in clinical practice. The aim of this study was to establish a new and validated pediatric screening tool "MUSICADO" that is easy to use and time economical. METHODS 106 patients with POMS aged 12-18 years and 210 healthy controls (HCs) stratified for age and education underwent neuropsychological testing including a screening test "Multiple Sclerosis Inventory of Cognition" for adults and 8 standardized cognitive tests and established scales to assess fatigue and HRQoL. RESULTS The phonemic verbal fluency task (RWT "s-words"), the Trail Making Test A (TMT-A), and the Digit Span Forward discriminated significantly between patients and HCs (p = 0.000, respectively) and showed the highest proportion of test failure in patients (24.5%, 17.9%; 15.1%, respectively). Therefore, they were put together to form the cognitive part of the "MUSICADO". After applying a scoring algorithm with balanced weighting of the subtests and age and education correction and a cut-off score for impairment, 35.8% of patients were categorized to be cognitively impaired (specificity: 88.6%). Fatigue was detected in 37.1% of the patients (specificity: 94.0%) and loss of HRQoL in 41.8% (specificity 95.7%) with the screening version, respectively. CONCLUSION The MUSICADO is a newly designed brief and easy to use screening test to help to early identify CI, fatigue, and loss of HRQoL in patients with POMS as cut scores are provided for all three items. Further studies will have to show its usability in independent samples of patients with POMS.
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Affiliation(s)
- K Storm Van's Gravesande
- Department of Pediatrics, Child and Adolescent Psychosomatics, Technische Universität München, Munich, Heigelhofstr. 63, 81377 München, Germany.
| | - P Calabrese
- Neuropsychology and Behavioral Neurology Unit, Division of Molecular and Cognitive Neuroscience, Department of Psychology, University of Basel, Birmannsgasse 8, 4055 Basel, Switzerland
| | - A Blaschek
- Department of Pediatric Neurology and Developmental Medicine, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University, Lindwurmstrasse 4, 80337 Munich, Germany
| | - K Rostásy
- Pediatric Neurology, Witten/Herdecke University, Children's Hospital Datteln, Dr. Friedrich Steiner Str. 5, 5711 Datteln, Germany
| | - P Huppke
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Neurology, University Medical Center Göttingen, Robert-Koch Strasse 40, 37075 Göttingen, Germany
| | - L Rothe
- Department of Neurology, University Hospital Cologne, Kerpenerstr. 62, 50937 Cologne, Germany
| | - V Mall
- Department of Pediatrics, Child and Adolescent Psychosomatics, Technische Universität München, Munich, Heigelhofstr. 63, 81377 München, Germany
| | - J Kessler
- Department of Neurology, University Hospital Cologne, Kerpenerstr. 62, 50937 Cologne, Germany
| | - E Kalbe
- Department of Medical Psychology ǀ, Neuropsychology and Gender Studies & Center for Neuropsychological Diagnostics and Intervention (CeNDI), University Hospital Cologne, Kerpenerstr. 62, 50937 Cologne, Germany
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9
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Abstract
In this case report, we present a healthy man who was referred for removal of subconjunctival yellow lesions found during a routine eye examination. In histopathological examination, an amyloidosis was found. There were no remnants or new lesions during 1-year follow-up. There was no systemic involvement. Conjunctival amyloidosis is a rare diagnosis that often is overlooked. Failure to recognise conjunctival amyloidosis might lead to late diagnosis of systemic amyloidosis. This case may rise the awareness to this rare diagnosis.
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Affiliation(s)
- Ofira Zloto
- The Ocular Oncology and Autoimmune Service , The Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.,The Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Mordechai Rosner
- The Ocular Oncology and Autoimmune Service , The Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.,The Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Vicktoria Vishnevskia-Dai
- The Ocular Oncology and Autoimmune Service , The Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel.,The Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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10
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Faden MS, Rosner M, Miller JL, Baschat AA. Vascular transfer of lidocaine between monochorionic twins with no apparent signs. Ultrasound Obstet Gynecol 2019; 53:850. [PMID: 30740791 DOI: 10.1002/uog.20237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/29/2019] [Accepted: 02/01/2019] [Indexed: 06/09/2023]
Affiliation(s)
- M S Faden
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Rosner
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - J L Miller
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A A Baschat
- Department of Gynecology and Obstetrics, Center for Fetal Therapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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11
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Doron R, Sterkin A, Fried M, Yehezkel O, Lev M, Belkin M, Rosner M, Solomon AS, Mandel Y, Polat U. Spatial visual function in anomalous trichromats: Is less more? PLoS One 2019; 14:e0209662. [PMID: 30673711 PMCID: PMC6343896 DOI: 10.1371/journal.pone.0209662] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 12/09/2018] [Indexed: 12/03/2022] Open
Abstract
Color deficiency is a common inherited disorder affecting 8% of Caucasian males with anomalous trichromacy (AT); it is the most common type of inherited color vision deficiency. Anomalous trichromacy is caused by alteration of one of the three cone-opsins’ spectral sensitivity; it is usually considered to impose marked limitations for daily life as well as for choice of occupation. Nevertheless, we show here that anomalous trichromat subjects have superior basic visual functions such as visual acuity (VA), contrast sensitivity (CS), and stereo acuity, compared with participants with normal color vision. Both contrast sensitivity and stereo acuity performance were correlated with the severity of color deficiency. We further show that subjects with anomalous trichromacy exhibit a better ability to detect objects camouflaged in natural gray scale figures. The advantages of color-deficient subjects in spatial vision performance could explain the relatively high prevalence of color-vision polymorphism in humans.
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Affiliation(s)
- Ravid Doron
- Department of Optometry and Vision Science, Hadassah Academic College, Jerusalem, Israel
| | - Anna Sterkin
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Hashomer, Israel
| | - Moshe Fried
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Hashomer, Israel
| | - Oren Yehezkel
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Hashomer, Israel
| | - Maria Lev
- The School of Optometry and Vision Science, The Mina & Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan, Israel
| | - Michael Belkin
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Hashomer, Israel
| | - Mordechai Rosner
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Hashomer, Israel
| | - Arieh S. Solomon
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Hashomer, Israel
| | - Yossi Mandel
- The School of Optometry and Vision Science, The Mina & Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Material (BINA), Bar Ilan University, Ramat-Gan, Israel
- * E-mail: (UP); (YM)
| | - Uri Polat
- The School of Optometry and Vision Science, The Mina & Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan, Israel
- * E-mail: (UP); (YM)
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12
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Rosner M, Zloto O. Periocular molluscum contagiosum: six different clinical presentations. Acta Ophthalmol 2018; 96:e600-e605. [PMID: 29855150 DOI: 10.1111/aos.13717] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/14/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE To describe the different clinical presentations of periocular molluscum contagiosum (MC) lesions and their epidemiological, clinical and histopathological features. METHODS Medical records and histopathological sections of all cases of periocular MC treated at the oculoplastic clinic of the Goldschleger Eye Institute, Sheba Medical Center, Israel, between 1995 and 2016 were retrospectively reviewed. The following data were extracted: gender, age at the time of MC diagnosis, immune competency, location of the periocular lesions, number of lesions, dimensions of the lesions, clinical presentation, histopathological features, suspected clinical diagnosis before histopathological diagnosis and treatment. RESULTS The series was composed of 41 patients (19 males, 22 females) whose mean age at presentation was 20.41 ± 21.10 years (range 1-71 years). Only one patient was immunosuppressed. The cases were classified into six proposed clinical presentations: 'umbilicated nodular', 'big/giant', 'conglomerated', 'erythematous', 'inflamed' and 'pedunculated'. CONCLUSION This is the first time that different clinical types of MC lesions are labelled. The current evidence also indicates that MC lesions should be suspected not only in children and in immunosuppressed adult patients but also in immunocompetent patients of all ages.
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Affiliation(s)
- Mordechai Rosner
- Goldschleger Eye Institute; Sackler Faculty of Medicine; Tel-Aviv University; Sheba Medical Center; Tel Hashomer Israel
| | - Ofira Zloto
- Goldschleger Eye Institute; Sackler Faculty of Medicine; Tel-Aviv University; Sheba Medical Center; Tel Hashomer Israel
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13
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Abstract
Transvaginal ultrasonography is a relatively new technique for visualizing the orbits in a fetus of 4 to 5 cm. At fifteen weeks of gestation it is possible to recognize the lenses and the hyaloid arteries in the eyes, to diagnose structural malformations such as anophthalmos, microphthalmos, buphthalmos and moderate to severe cataract. In most cases cataracts were associated with intracranial defects. We describe a case where the sonographic diagnosis of fetal cataract was confirmed by histopathological examination. A 27-year-old woman had a routine transvaginal sonography at 15 weeks’ normal gestation. Microphthalmos without a hyaloid artery and disorganization of the anterior chamber and lens consistent with cataract were demonstrated in the fetal left eye. In accordance with the parents’ decision, the pregnancy was terminated a week later. Autopsy of the fetus was done and serial sections of the left eye were studied by light microscopy. Histopathological examination verified the sonographic diagnosis of fetal cataract in a microphthalmic eye. Associated findings included malformation of the anterior segment and retinal dysplasia.
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Affiliation(s)
- M Rosner
- Eye Pathology Laboratory, Goldschleger Eye Institute, Sackler Faculty of Medicine, Tel Aviv University, Tel-Hashomer, Israel
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14
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Abstract
We conducted a nation-wide study of the relationship of myopia with height, weight and body-mass index in order to confirm observations that myopic persons are taller than non-myopes. From a review of the data of 106,926, consecutive male military recruits aged 17 to 19 years, we found that myopia is associated neither with higher stature nor with greater weight. Persons with severe myopia were slightly shorter (172.8 +/- 7.1 cm) and weighed less (62.6 +/- 11.0 kg) than those with mild myopia (173.3 +/- 6.9 cm and 63.8 +/- 10.5 kg respectively), while the non-myopes were taller (173.7 +/- 6.7 cm) and heavier (63.9 +/- 10.2 kg) than the myopes (p = 0.0001). The mean body-mass index was only slightly smaller among the myopes (21.1 +/- 3.1 kg/m2) than among the non-myopes (21.2 +/- 2.9 kg/m2, p = 0.0001).
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Affiliation(s)
- M Rosner
- Medical Corps, Israel Defence Forces
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15
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Priel A, Vishnevskia-Dai V, Hochma L, Gildener-Leapman J, Ben Simon GJ, Rosner M, Antman G, Zloto O. The Epidemiological, Clinical, and Histopathological Characteristics of Lacrimal Gland Biopsies in a Tertiary Care Center in Israel. Isr Med Assoc J 2018; 20:104-108. [PMID: 29431305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND The distribution of pathology and clinical characteristics of lacrimal gland diseases are different in different areas of the world. OBJECTIVES To evaluate the incidence rate, patient characteristics, and indications for surgical intervention of lacrimal gland lesions in a tertiary care center in Israel. METHODS All biopsied or surgically removed lacrimal gland lesions at the Goldschleger Eye Institute from 2009 to 2015 were identified. The following data were collected: age, gender, indications for surgical intervention, diagnosis, treatment, and prognosis. RESULTS We evaluated 28 lacrimal gland biopsies from 26 patients (11 men, 15 women). Mean age at biopsy was 47.5 years old. The most common presenting symptoms were: eyelid swollenness (57.14%), ptosis (32.14%), and proptosis (10.71%). All patients underwent computed tomography and magnetic resonance imaging. In 28 cases, infiltrations of the lacrimal gland were found. In nine cases infiltration of muscles or orbital extension were found. The most common pathologies were non-specified inflammation (44.82%), lymphoma (20.68%), and immunoglobulin G4-related disease (10.34%). The treatment was diverse according to the patient diagnosis. Prognosis of lacrimal gland disease was good; however, in five patients the systemic disease progressed. CONCLUSIONS Lesions of the lacrimal gland comprise a wide variety of pathological findings that require different treatment strategies. Lacrimal gland biopsies enable physicians to precisely recognize the pathology; therefore, it is important to consider this surgical method in any patient with lesions in the lacrimal gland.
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Affiliation(s)
- Ayelet Priel
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Vicktoria Vishnevskia-Dai
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liran Hochma
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Juliana Gildener-Leapman
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Guy J Ben Simon
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mordechai Rosner
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gal Antman
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofira Zloto
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated with Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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16
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Sheen-Ophir S, Rosner M, Rubowitz A. Feasibility of using experimental high viscosity silicone oils: a pilot study. Int J Retina Vitreous 2018; 4:3. [PMID: 29372075 PMCID: PMC5767060 DOI: 10.1186/s40942-017-0105-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 12/25/2017] [Indexed: 11/10/2022] Open
Abstract
Background Polydimethyl silicones (silicone oils) are used in complex retinal surgeries, including difficult or recurrent retinal detachments, severe eye trauma, and other indications for long term tamponade. Two major problems with currently available silicone oils are emulsification and recurrent retinal detachment. The primary endpoint of this study was to evaluate the toxicity and safety of high viscosity silicone oils and second, the feasibility of using them with currently available vitrectomy systems. Methods In this experimental study, 8 eyes of 8 New Zealand White rabbits underwent vitrectomy. The vitreous cavities of 2 eyes were filled with medical grade 5500 cS silicone oil, 4 eyes with 12,500 cS oil, and 2 eyes with 30,000 cS oil for 3 months, after which the animals were sacrificed and the eyes sent for histopathological examination. The duration required to inject 5 cc each of 1300, 12,500 and 30,000 cS oils, using a commercially available system (Alcon VFC Pac) were also evaluated. Results Retinal histopathology was comparable in all eyes, with no excess toxic effect or damage seen in eyes with experimental oils. All oils were readily injectable with the VFC Pac system. Conclusions High viscosity experimental silicone oils have similar chemical and physical properties to lower viscosity oils currently used. Therefore, toxicities are expected to be similar. In a small pilot sample of 8 rabbit eyes filled with silicone oil for 3 months, histopathology in eyes with 12,500, 30,000 cS or medical grade 5500 cS silicone oil were similar. Injecting these oils using available vitrectomy equipment is feasible. New, high viscosity silicone oils may offer several advantages over currently available oils for some patients.
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Affiliation(s)
- Shira Sheen-Ophir
- 1Department of Ophthalmology, Meir Hospital and Sackler Faculty of Medicine, Tel Aviv University, 59 Tchernichovsky St., 44281 Kfar Saba, Israel.,2Department of Ophthalmology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mordechai Rosner
- 2Department of Ophthalmology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,3Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Israel
| | - Alexander Rubowitz
- 1Department of Ophthalmology, Meir Hospital and Sackler Faculty of Medicine, Tel Aviv University, 59 Tchernichovsky St., 44281 Kfar Saba, Israel.,2Department of Ophthalmology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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17
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Mahlknecht J, Merchán D, Rosner M, Meixner A, Ledesma-Ruiz R. Assessing seawater intrusion in an arid coastal aquifer under high anthropogenic influence using major constituents, Sr and B isotopes in groundwater. Sci Total Environ 2017; 587-588:282-295. [PMID: 28238431 DOI: 10.1016/j.scitotenv.2017.02.137] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 02/16/2017] [Accepted: 02/16/2017] [Indexed: 06/06/2023]
Abstract
The La Paz aquifer system (Baja California Sur, Mexico) is under severe anthropogenic pressure because of high groundwater abstraction for urban supply (city of La Paz, around 222,000 inhabitants) and irrigated agriculture (1900ha). In consequence, seawater has infiltrated the aquifer, forcing the abandonment of wells with increased salinity. The objective of this study was to assess seawater intrusion, understand the hydrogeochemical processes involved and estimate the contribution of seawater in the wells tested. The aquifer comprises mainly the alluvial filling and marine sediments of a tectonic graben oriented north-south, in contact with the Gulf of California. Groundwater samples were collected in 47 locations and analyzed for major constituents. A subset of 23 samples was analyzed for strontium and boron concentrations and isotopic signatures (87Sr/86Sr and δ11B). Results were interpreted using standard hydrochemical plots along with ad hoc plots including isotopic data. Seawater intrusion was confirmed by several hydrogeochemical indicators, such as the high salinity in areas of intense pumping or the Na+-Ca2+ exchange occurring in sediments that were previously in chemical equilibrium with fresh water. However, seawater contribution was not sufficient to explain the observed concentrations and isotopic signatures of Sr and B. According to the isotopic data, desorption processes triggered by a modification in chemical equilibrium and an increase in ionic strength by seawater intrusion significantly increased Sr and probably B concentrations in groundwater. From a calculation of seawater contribution to the wells, it was estimated that one-third of the sampled abstraction wells were significantly affected by seawater intrusion, reaching concentrations that would limit their use for human supply or even irrigated agriculture. In addition, significant agricultural pollution (nitrates) was detected. Planned management of the aquifer and corrective measures are needed in order to invert the salinization process before it severely affects water resources in the long term.
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Affiliation(s)
- J Mahlknecht
- Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Mexico.
| | - D Merchán
- Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Mexico
| | | | - A Meixner
- Faculty of Geosciences and MARUM-Center for Marine Environmental Sciences, University of Bremen, Germany
| | - R Ledesma-Ruiz
- Centro del Agua para América Latina y el Caribe, Tecnológico de Monterrey, Mexico
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18
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Rotenstreich Y, Tzameret A, Kalish SE, Bubis E, Belkin M, Moroz I, Rosner M, Levy I, Margel S, Sher I. A minimally invasive adjustable-depth blunt injector for delivery of pharmaceuticals into the posterior pole. Acta Ophthalmol 2017; 95:e197-e205. [PMID: 27778476 DOI: 10.1111/aos.13238] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 07/25/2016] [Indexed: 12/17/2022]
Abstract
PURPOSE To investigate the feasibility and safety of a novel minimally invasive adjustable-depth blunt injector for pharmaceuticals delivery into the posterior segment. METHODS Indocyanine green (ICG), sodium fluorescein and iron oxide nanoparticles (IONPs) were injected using the new injector into the extravascular spaces of the choroid (EVSC) compartment of rabbits and cadaver pig eyes. Spectral domain optical coherence tomography (SD-OCT), fundus imaging and histology analysis were performed for assessment of injection safety and efficacy. RESULTS Indocyanine green, fluorescein and IONPs were detected across the EVSC in rabbit eyes, covering over 80 per cent of the posterior eye surface. Injected IONPs were retained in the EVSC for at least 2 weeks following injection. No retinal detachment, choroidal haemorrhage or inflammation was detected in any of the injected eyes. In cadaver pig eyes, ICG was detected across the EVSC. CONCLUSIONS This novel minimally invasive delivery system may be used to safely deliver large volumes of pharmaceuticals into a new treatment reservoir compartment - the EVSC which can serve as a depot, in close proximity to the retina, covering most of the surface of the back of the eye without insertion of surgical instruments under the central retina. This system is predicted to enhance the therapeutic effect of treatments for posterior eye disorders.
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Affiliation(s)
- Ygal Rotenstreich
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
- The Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Adi Tzameret
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
- The Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Sapir E. Kalish
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
- The Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Ettel Bubis
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
- The Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Michael Belkin
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
- The Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Iris Moroz
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
| | - Mordechai Rosner
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
- The Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Itay Levy
- Department of Chemistry; Bar-Ilan Institute of Nanotechnology and Advanced Materials; Ramat-Gan Israel
| | - Shlomo Margel
- Department of Chemistry; Bar-Ilan Institute of Nanotechnology and Advanced Materials; Ramat-Gan Israel
| | - Ifat Sher
- Sheba Medical Center; The Maurice and Gabriela Goldschleger Eye Institute; Tel Hashomer Israel
- The Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
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Zloto O, Aviel-Ronen S, Rosner M. An Unusual Location of Fibrous Hamartoma of Infancy in the Eyelid. Ocul Oncol Pathol 2017; 3:8-10. [PMID: 28275596 DOI: 10.1159/000448103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/21/2016] [Indexed: 11/19/2022] Open
Abstract
AIM To describe the clinical, imaging, and histopathological features of fibrous hamartoma of infancy (FHI) in the eyelid, a rare differential diagnosis for eyelid lesions. METHODS We describe the case of a 7-month-old patient with a FHI in the eyelid that was diagnosed after surgical removal. The unique histopathological appearance of the triphasic histologic components provided the diagnosis. CONCLUSIONS FHI is included in the long list of differential diagnosis for eyelid lesions in infancy. Therefore, it is important for the ophthalmologists to be familiar with this entity in order to avoid misdiagnosis of other fibromatosis and malignant tumor as well as unnecessary aggressive treatment.
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Affiliation(s)
- Ofira Zloto
- Goldschleger Eye Institute, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Sarit Aviel-Ronen
- Department of Pathology, Sheba Medical Center, Tel Hashomer, Israel; Talpiot Medical Leadership Program, Sheba Medical Center, Tel Hashomer, Israel
| | - Mordechai Rosner
- Goldschleger Eye Institute, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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20
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Reime B, König P, Balcik CC, Delican B, Dörflinger L, Erdrich M, Joachim J, Köhler C, Lengle S, Rosner M, Sahbaz M, Schwenke P, Stürmlinger A, Durmus M. Gesundheitsbezogene Bedürfnisse von Migrantinnen und Migranten im ländlichen Raum. Gesundheitswesen 2016. [DOI: 10.1055/s-0036-1586514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Fabian ID, Rosner M, Fabian I, Vishnevskia-Dai V, Zloto O, Shinderman Maman E, Cohen K, Ellis M, Lin HY, Hercbergs A, Davis PJ, Ashur-Fabian O. Low thyroid hormone levels improve survival in murine model for ocular melanoma. Oncotarget 2016; 6:11038-46. [PMID: 25868390 PMCID: PMC4484437 DOI: 10.18632/oncotarget.3566] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/1969] [Accepted: 02/22/2015] [Indexed: 11/25/2022] Open
Abstract
Uveal melanoma is highly metastatic, prognosis is poor and there are no effective treatments to extend survival. Accumulating evidence suggests that thyroid hormones have a mitogenic effect via binding to αvβ3 integrin. We aimed to examine the impact of thyroid status on survival in a murine B16F10 model for ocular melanoma, highly expressing the integrin. In two independent experiments oral propylthiouracil (PTU) was used to induce hypothyroidism (n=9), thyroxine to induce hyperthyroidism (n=11) and mice given plain water served as control (n=8). At day 21, the subretinal space was inoculated with 10(2) B16F10 cells. In non-inoculated mice (n=6 of each group) serum free T4 (FT4) levels were measured and additional non-inoculated mice (3 given PTU and 4 given thyroxine or water) served as internal control to demonstrate the impact of the dissolved substance. The PTU-inoculated mice showed clinical evidence of intraocular tumor growth significantly later than the thyroxine mice (P=0.003) and survival time was significantly longer (P<0.001). FT4 levels differed significantly between groups (P<0.001) and with no signs of illness in the internal control group. Our findings suggest that hyperthyroidism shortens survival, whereas relative hypothyroidism may have a protective role in metastatic ocular melanoma.
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Affiliation(s)
- Ido Didi Fabian
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mordechai Rosner
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ina Fabian
- Department of Cell and Developmental Biology, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Vicktoria Vishnevskia-Dai
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ofira Zloto
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Elena Shinderman Maman
- Department of Human Molecular Genetics and Biochemistry, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Keren Cohen
- Department of Human Molecular Genetics and Biochemistry, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Martin Ellis
- Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hung-Yun Lin
- Institute of Cancer Biology and Drug Discovery, School of Medical Technology, Taipei Medical University, Taipei, Taiwan.,Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Albany, NY, USA
| | - Aleck Hercbergs
- Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH, USA
| | - Paul J Davis
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, Albany, NY, USA.,Department of Medicine, Albany Medical College, Albany, NY, USA
| | - Osnat Ashur-Fabian
- Department of Human Molecular Genetics and Biochemistry, The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Translational Hemato-Oncology Laboratory, The Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, affiliated to Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Zloto O, Rosner M. [THE DIFFERENT PRESENTATIONS OF PERIOCULAR MOLLUSCUM CONTAGIOSUM]. Harefuah 2015; 154:703-742. [PMID: 26821502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
INTRODUCTION Periocular molluscum contagiosum nodules typically appear in a classical presentation. However, the presentation can be different. This makes the diagnosis and the decision on treatment difficult. AIM To report different clinical presentations of periocular molluscum contagiosum and to examine their epidemiological, clinical and histopathological features. METHODS For all patients who were diagnosed with periocular molluscum contagiosum during the years 1995-2014, the following data was extracted from the patients' files: gender, age at the time of diagnosis, location of the lesion, number and dimensions of lesions, clinical presentation, histopathological features, suspected clinical diagnosis before histopathological diagnosis and treatment. A classification according to different presentations was suggested and the epidemiological, clinical and histopathological features of each presentation were examined. RESULTS Molluscum contagiosum was diagnosed in 30 patients: 10 males (33.33%) and 20 females (66.66%). The mean age of diagnosis was 19.3 years old, one patient was immunosuppressive and 29 patients were immunocompetent. Six different clinical presentations were seen: Typical, umbilicated dome shaped lesion (19 cases), big lesion (4 cases), conglomerated lesions (4 cases), erythematous lesion (1 case), inflamed lesion (1 case), and pedunculated lesion (1 case). In all cases the diagnosis was confirmed by histopathological examination and the treatment was surgical excision. CONCLUSION According to this case series of periocular molluscum contagiosum, which is one of the largest published thus far in the ophthalmic literature, six distinct different clinical presentations are suggested. These lesions should be suspected not just in children and in immunosuppressive adult patients but also in immunocompetent patients of all ages.
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Zloto O, Barequet I, Rosner M. Unusual Histopathological Views of Fuchs' Endothelial Dystrophy. Ophthalmology 2015; 122:2158. [PMID: 26498080 DOI: 10.1016/j.ophtha.2015.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 09/11/2015] [Accepted: 09/11/2015] [Indexed: 11/20/2022] Open
Affiliation(s)
- Ofira Zloto
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Irina Barequet
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Mordechai Rosner
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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Sagiv O, Rosen N, Priel A, Rosner M, Ben Simon GJ. [Dacryocystorhinostomy (DCR) under local anesthesia]. Harefuah 2015; 154:110-135. [PMID: 25856864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
INTRODUCTION Dacryocystorhinostomy (DCR) is performed using an external or endoscopic endonasal approach under general anesthesia (GA) or under sedation. In our department these operations are performed mainly under local anesthesia (LA) without sedation. PURPOSE To examine the intraoperative and postoperative success rates of primary DCR under LA and GA using the external or endonasal approach. METHODS The study group of this retrospective research included all patients who underwent a primary DCR in our department in 2009-2012 due to an acquired nasolacrimal duct obstruction. The main outcome measure was postoperative success defined as complete or significant improvement in tearing and a patent ostium. Intraoperative success rate was defined as the ability to complete the operation under LA. RESULTS The study group included 139 patients. The success rate was 87.1% (121 patients). Success rates were similar for the external and endoscopic approaches (88.6% vs. 82.4%, respectively, p = 0.348). The success rate for surgeries performed under GA was higher than LA (96.7% vs. 84.9%, respectively, p = 0.019). The mean age of patients who were operated under GA was significantly younger than those under LA (43.6 vs. 65.7 years, respectively, p < 0.005). Conversion GA was only needed in 1 patient (0.7%). CONCLUSION Most DCR surgeries can be performed under LA without sedation. Success rates found in our study are comparable with previous publications, similar for external or endoscopic approaches, and better under GA than LA. This difference may be related to the age difference between the two groups.
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Tzameret A, Sher I, Belkin M, Treves AJ, Meir A, Nagler A, Levkovitch-Verbin H, Barshack I, Rosner M, Rotenstreich Y. Transplantation of human bone marrow mesenchymal stem cells as a thin subretinal layer ameliorates retinal degeneration in a rat model of retinal dystrophy. Exp Eye Res 2013; 118:135-44. [PMID: 24239509 DOI: 10.1016/j.exer.2013.10.023] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 10/24/2013] [Accepted: 10/31/2013] [Indexed: 02/06/2023]
Abstract
Vision incapacitation and blindness associated with retinal degeneration affect millions of people worldwide. Cell based therapy and specifically transplantation of human adult bone marrow-derived stem cells (hBM-MSCs) present possible treatment strategy. Subretinal transplantation of human or rat BM-MSCs was shown previously to improve retinal function in Royal College Surgeons (RCS) rats. In those studies cells were transplanted via a transscleral-transchoroidal approach, creating a localized subretinal bleb. Limited number of cells could be injected and photoreceptor rescue was restricted to areas in proximity to the injection site. Here we describe a new surgical method for subretinal transplantation that facilitates uniform distribution of transplanted cells as a thin layer along most of the subretinal space. We assessed the therapeutic effect of hBM-MSCs on RCS rats when transplanted either subretinally or intravitreally. We also examined whether a second transplantation can prolong the therapeutic effect. A cell suspension of 2.5 × 10(6) cells in 5 μl was injected subretinally or intravitreally in RCS rats at 28 days postnatal. In the subretinal group, hBM-MSCs were transplanted posterior to the limbus in the superotemporal part of the eye through a longitudinal triangular scleral tunnel reaching the choroid. In the intravitreal group, the cells were injected into the superotemporal part of the vitreous cavity. In cross sections of subretinally transplanted eyes, removed 2 h following transplantation, hBM-MSCs were distributed as a near-homogenous thin layer along most of the subretinal space. In some animals the cells were also detected in the choroid. In the intravitreal injection group, hBM-MSCs were clustered in the vitreous cavity. Transplanted cells could be detected up to 2 weeks after transplantation but not at later time points. Retinal function and structure were assessed by electroretinogram (ERG) and histology analysis, respectively. Six weeks post transplantation, the mean maximal scotopic ERG b-wave amplitude response recorded in RCS control eyes was 1.2 μV. By contrast, in transplanted eyes mean responses of 56.4 μV and 66.2 μV were recorded in the intravitreally and subretinally transplanted eyes, respectively. In the subretinal group, retinal function was significantly higher in transplanted compared with control eyes up to 20 weeks following transplantation. By contrast, in the intravitreal group, rescue of retinal function persisted only up to 12 weeks following transplantation. Histological analysis revealed that 8 weeks following subretinal transplantation, the retinas of control eyes were dystrophic, with outer nuclear layer (ONL) containing a single cell layer. An extensive photoreceptor rescue was demonstrated in transplanted eyes at this time point, with 3-4 cell layers in the ONL along the entire retina. A second subretinal transplantation at 70 days postnatal did not enhance or prolong the therapeutic effect of hBM-MSCs. No immunosuppressants were used and long-term safety analysis demonstrated no gross or microscopic adverse effects. Taken together our findings suggest that transplantation of hBM-MSCs as a thin subretinal layer enhances the therapeutic effect and the safety of cell transplantation.
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Affiliation(s)
- Adi Tzameret
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Ifat Sher
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Michael Belkin
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Avraham J Treves
- Center for Stem Cells and Regenerative Medicine, Cancer Research Center, Sheba Medical Center, Tel-Hashomer, Israel
| | - Amilia Meir
- Center for Stem Cells and Regenerative Medicine, Cancer Research Center, Sheba Medical Center, Tel-Hashomer, Israel
| | - Arnon Nagler
- Hematology Division, Sheba Medical Center, Tel-Hashomer, Israel
| | - Hani Levkovitch-Verbin
- Rothberg Ophthalmic Molecular Biology Laboratory, Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel-Hashomer, Israel
| | - Iris Barshack
- Department of Pathology, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel-Hashomer, Israel
| | - Mordechai Rosner
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Ygal Rotenstreich
- Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel-Hashomer 52621, Israel.
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Gabay I, Barequet I, Varssano D, Rosner M, Katzir A. Bonding surgical incisions using a temperature-controlled laser system based on a single infrared fiber. J Biomed Opt 2013; 18:111416. [PMID: 24057125 DOI: 10.1117/1.jbo.18.11.111416] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 08/22/2013] [Indexed: 06/02/2023]
Abstract
ABSTRACT. Although there has been great interest in laser heating for bonding of surgical incisions in tissues, it has not gained wide acceptance by surgeons. We argue that the main obstacle has been the lack of temperature control, which may lead to a weak bonding. We previously developed a laser bonding system based on two infrared transmitting AgBrCl fibers, one for laser heating and one for temperature control. In view of the inherent limitations of such systems observed in many animal experiments, we developed an improved system based on a single infrared fiber. Besides the decreased dimensions, this system offers many advantages over the two-fiber system. It is less sensitive to accuracy of height and tilt of the fiber distal tip above the tissue, ensuring more accurate heating that can potentially lead to stronger bonding with minimal thermal damage. The system is successfully tested in the soldering of 15 corneal incisions, ex vivo. Histopathology shows little thermal damage and good wound apposition. The average burst pressure is 100±30 mm Hg. These findings indicate the usefulness of the system for ophthalmic surgery as well as other surgical procedures, including endoscopic and robotic surgery.
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Affiliation(s)
- Ilan Gabay
- Tel Aviv University, School of Physics and Astronomy, Tel Aviv 69978, Israel
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Fabian ID, Priel A, Fridman E, Rosen N, Barshak I, Greenberg G, Rosner M. [Congenital orbital teratoma]. Harefuah 2013; 152:323-369. [PMID: 23885462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Congenital orbital teratoma is a rare benign tumor, composed of all three germ cell layers. The Lesion presents clinically as uniLateral proptosis in the newborn. In order to diagnose the tumor correctly a multidisciplinary approach is needed, including ophthalmologists, neurosurgeons, pediatrics, radiologists, and pathologists to eventually diagnose the lesion. Early detection and treatment is needed in order to prevent mechanical destruction of adjacent tissues, and blindness from mechanical pressure on the optic nerve. Surgical excision is the treatment of choice. We present a case report of a newborn, diagnosed with congenital orbital teratoma, and discuss the clinical and histological characteristics of the tumor.
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Affiliation(s)
- Ido Didi Fabian
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer Hospital.
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Abstract
The purpose of this project is to report a case of severe Pythium insidiosum keratitis confirmed by polymerase chain reaction (PCR), and its long-term cure after therapeutic penetrating keratoplasty. A 24-year-old woman with a history of contact lens wear and exposure to swimming pool water presented with a severe corneal abscess. She was treated with intensive fortified topical antibiotics and natamycin with limited response. Initial cultures suggested the presence of a septate mold, unclearly identified; therefore, both topical and intravenous voriconazole were administered. Despite the above treatment, there was worsening of the clinical picture. PCR assay revealed homology to Pythium insidiosum. Promptly, the patient underwent a large therapeutic penetrating keratoplasty. After five years of follow-up, the graft exhibits neither signs of rejection nor any recurrence of infection. We conclude that prompt identification of Pythium insidiosum keratitis and aggressive treatment by therapeutic penetrating keratoplasty may offer a cure to this disease.
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Affiliation(s)
- Irina S Barequet
- Goldschleger Eye Institute, Sheba Medical Center, Sackler School of Medicine, Tel-Hashomer, Israel.
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Goldich Y, Barkana Y, Zadok D, Avni I, Berenshtein E, Rosner M, Chevion M. Use of amphoteric rinsing solution for treatment of ocular tissues exposed to nitrogen mustard. Acta Ophthalmol 2013; 91:e35-40. [PMID: 23035792 DOI: 10.1111/j.1755-3768.2012.02533.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE Ocular exposure to mustard agents may cause severe and prolonged injury to the anterior segment tissues. Effective decontamination of the external eye surface after exposure is of paramount importance. The purpose of the present study was to assess the effectiveness of Diphoterine rinsing solution (DRS) in reducing ocular damage after exposure to nitrogen mustard (NM) and to compare it with normal saline solution. METHODS One eye of 16 New Zealand albino rabbits was exposed to 2% NM. Immediate thorough irrigation was performed with either 500 ml of DRS (treated group) or with 500 ml of normal saline (control group). The magnitude of ocular injury and response to treatment were assessed by examiners masked to the treatment assignment during 22 days following the exposure. RESULTS Immediate ocular irrigation with DRS was more effective compared with saline in reducing corneal, iris and anterior chamber injury. In the DRS-treated group, the corneal opacity and corneal neovascularization were less severe, and development of iris atrophy was delayed. Intraocular pressure (mmHg) was better maintained when compared to the control group (day 7 24.3 versus 14.8, p = 0.003; day 12 28 versus 15, p = 0.003; day 22 33.5 versus 21.8, p = 0.014, respectively). Systemic oxidative stress associated with exposure to NM was significantly higher in the saline-treated group than in DRS-treated group (p < 0.011). CONCLUSIONS The findings of this study indicate the effectiveness of DRS in reducing of NM-induced ocular injuries. Its use should be considered as an immediate treatment modality following exposure to mustard agents to reduce potential ocular injury.
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Affiliation(s)
- Yakov Goldich
- Department of Ophthalmology, Assaf Harofeh Medical Center, Tel Aviv University, Tel Aviv, Israel.
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Newman H, Shapira S, Spierer O, Kraus S, Rosner M, Pri-Chen S, Loewenstein A, Arber N, Barak A. Involvement of CD24 in angiogenesis in a mouse model of oxygen-induced retinopathy. Curr Eye Res 2012; 37:532-9. [PMID: 22577772 DOI: 10.3109/02713683.2011.647226] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
PURPOSE To investigate a possible involvement of CD24 in vascular remodeling and angiogenesis in retinopathy of prematurity (ROP) in a mouse model of oxygen-induced retinopathy. MATERIALS AND METHODS 17 CD24 knockout (KO) and 12 wild-type (WT) C57BL/6 mice were used. Group 1 mice were exposed to oxygen concentrations of 75 ± 2% from postnatal day (P) 7 to P12. Group 2 mice were raised in room air. At P17, all mice underwent fluorescein-conjugated-dextran perfusion and were sacrificed. The flat-mounted retinas were scored manually and digitally by a new computerized algorithm, according to blood vessel obliteration, tortuosity, vascular tufts and neovascularization formation. RESULTS Fifty four retinal whole mounts were available for analysis and scoring. Group 1 retinas had significantly higher values of vaso-obliteration, tufts, neovascularization, vessel tortuosity and higher mean retinopathy scores than Group 2 retinas (KO mice: 9.0 ± 0.27 vs. 0.74 ± 0.2, respectively, P < 0.0001; WT mice: 7.58 ± 0.40 vs. 1.17 ± 0.27, respectively, P < 0.0001). Manual scoring in Group 1 revealed higher values of neovascularization, tortuosity and mean retinopathy scores in KO mice vs. WT mice (9.0 ± 0.27 vs. 7.58 ± 0.40, respectively, P = 0.009). Digital scoring revealed a higher neovascularization score in KO mice as well (13.72 ± 0.82% vs. 8.06 ± 0.27%, P < 0.0001). All mice had similar vaso-obliteration areas. There were no significant differences between KO and WT mice in Group 2. CONCLUSIONS Absence of CD24 may have a deleterious effect on angiogenesis occurring in the second stage of ROP development, though its role in vessel obliteration during the first stage of ROP is probably limited.
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Affiliation(s)
- Hadas Newman
- Department of Ophthalmology,Tel-Aviv Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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Belokopytov M, Shulman S, Dubinsky G, Belkin M, Rosner M. Intravitreal saline injection ameliorates laser-induced retinal damage in rats. Retina 2012; 32:1165-70. [PMID: 22290081 DOI: 10.1097/iae.0b013e318234942f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PURPOSE Injury to the central nervous system has been shown to trigger a physiologic response in the form of some degree of natural self-repair. This beneficial reaction may be boosted by appropriate preconditioning via a reversible injury to the retina. Here we report the ameliorative effect of intravitreal saline injection on laser-induced retinal damage. METHODS Standard argon laser lesions (514 and 544 nm, 200 μm, 0.1 W, 0.05 seconds) were induced in the eyes of 36 Dark Agouti pigmented rats and immediately followed by injection of saline either intravitreally (5 μL) or intravenously (0.5 mL). Lesions were evaluated histologically and morphometrically after 3, 20, and 60 days. RESULTS At all 3 time points, the eyes of rats injected intravitreally showed less laser-induced retinal cell loss (P < 0.05) and smaller lesion diameters (P < 0.05) than those of intravenously injected rats. CONCLUSION Intravitreal saline injection evidently has a neuroprotective effect on the rat retina. The mechanism of action of this effect should be further elucidated and its clinical applicability tested.
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Affiliation(s)
- Mark Belokopytov
- Goldschleger Eye Research Institute, Sackler School of Medicine, Tel Aviv University, Sheba Medical Center, Tel Hashomer, Israel.
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Rabinowitz R, Priel A, Rosner M, Pri-Chen S, Spierer A. Avastin treatment reduces retinal neovascularization in a mouse model of retinopathy of prematurity. Curr Eye Res 2012; 37:624-9. [PMID: 22578253 DOI: 10.3109/02713683.2012.669003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE This study was designed to evaluate the effect of one intraperitoneal (IP) injection of bevacizumab (Avastin) on the severity of oxygen-induced retinopathy (OIR) in a mouse model. MATERIALS AND METHODS Twenty-eight eyes of 14 mice with OIR were studied. There were nine mice in the bevacizumab-treated group (study group) and five mice in the saline-treated group (controls). The mouse OIR model consisted of a 5-day exposure to 75% oxygen. On postnatal day 12 (P12), Avastin 2.5 mg/kg was administered IP to the study group and 2.5 mg/kg normal saline was administered IP to the controls. All 14 mice underwent fluorescein angiography of the retinal vasculature on P17 and the following parameters were scored (Modified Retinopathy Scoring System, MRSS): blood vessel growth, formation of blood vessel tufts, extraretinal neovascularization, degree of central constriction, and tortuosity of vessels. In addition, the neovascular vessels were quantified on the hematoxylin and eosin (H&S)-stained paraffin sections of the eyes in a masked fashion. RESULTS The MRSS score in the Avastin-treated mice was significantly lower than that of the saline-treated mice (3.06 ± 1.63 versus 7.1 ± 2.01, respectively, p = 0.0021). The neovascularization count was also significantly lower in the study group (3.44 ± 1.81 versus 9.34 ± 3.23 for the controls, p = 0.0013). CONCLUSIONS IP Avastin treatment reduced the extent of oxygen-induced retinopathy in a mouse model of retinopathy of prematurity.
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Affiliation(s)
- Ronen Rabinowitz
- Goldschleger Eye Institute, Tel-Aviv University , Tel-Aviv, Israel
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Ben Simon GJ, Lukovetsky S, Lavinsky F, Rosen N, Rosner M. Histological and clinical features of primary and recurrent periocular Basal cell carcinoma. ISRN Ophthalmol 2012; 2012:354829. [PMID: 24555125 PMCID: PMC3912582 DOI: 10.5402/2012/354829] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Accepted: 01/31/2012] [Indexed: 11/30/2022]
Abstract
Background. Basal cell carcinoma (BCC) is the most common malignancy of the eyelids. Medial canthal BCCs tends to recur more often. Purpose. To evaluate the clinical and histological features of primary and recurrent periocular BCC, in order to identify any existing associations. Methods. Data from 87 patients (71 primary and 16 recurrent) were analyzed in this study. All patients underwent tumor excision with frozen section margin control at the Goldschleger Eye Institute between 1/1995 to 12/1997. Statistical analysis was performed to identify possible associations between histological and clinical characteristics of primary and recurrent BCC. Main Outcome Measures. Anatomical location, clinical presentation, and histology of peri-ocular BCC. Results. No association was found between histopathological and clinical characteristics of BCC. Similar features with regard to eyelid location and histology were found in primary and recurrent peri-ocular BCCs, whereas recurrent BCCs tended to involve a greater eyelid extent with a longer duration of symptoms. Medial canthal BCCs, morpheaform, or sclerosing histology were not more common in the recurrent BCC group. Conclusions. Similar clinical and histological characteristics were noted in primary and recurrent periocular BCC, implying that incomplete surgical excision rather than anatomical location or histological features is the main cause for recurrence.
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Affiliation(s)
- Guy J Ben Simon
- Goldschleger Eye Research Institute, Tel-Aviv University, Sackler School of Medicine, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Semion Lukovetsky
- Goldschleger Eye Research Institute, Tel-Aviv University, Sackler School of Medicine, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Fabio Lavinsky
- Goldschleger Eye Research Institute, Tel-Aviv University, Sackler School of Medicine, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Nahum Rosen
- Goldschleger Eye Research Institute, Tel-Aviv University, Sackler School of Medicine, Sheba Medical Center, Tel-Hashomer 52621, Israel
| | - Mordechai Rosner
- Goldschleger Eye Research Institute, Tel-Aviv University, Sackler School of Medicine, Sheba Medical Center, Tel-Hashomer 52621, Israel
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Gundacker C, Scheinast M, Damjanovic L, Fuchs C, Rosner M, Hengstschläger M. Proliferation potential of human amniotic fluid stem cells differently responds to mercury and lead exposure. Amino Acids 2011; 43:937-49. [PMID: 22101983 DOI: 10.1007/s00726-011-1154-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Accepted: 11/08/2011] [Indexed: 01/07/2023]
Abstract
There are considerable gaps in our knowledge on cell biological effects induced by the heavy metals mercury (Hg) and lead (Pb). In the present study we aimed to explore the effects of these toxicants on proliferation and cell size of primary human amniotic fluid stem (AFS) cells. Monoclonal human AFS cells were incubated with three dosages of Hg and Pb (single and combined treatment; ranging from physiological to cytotoxic concentrations) and the intracellular Hg and Pb concentrations were analyzed, respectively. At different days of incubation the effects of Hg and Pb on proliferation, cell size, apoptosis, and expression of cyclins and the cyclin-dependent kinase inhibitor p27 were investigated. Whereas we found Hg to trigger pronounced effects on proliferation of human AFS cells already at low concentrations, anti-proliferative effects of Pb could only be detected at high concentrations. Exposure to high dose of Hg induced pronounced downregulation of cyclin A confirming the anti-proliferative effects observed for Hg. Co-exposure to Hg and Pb did not cause additive effects on proliferation and size of AFS cells, and on cyclin A expression. Our here presented data provide evidence that the different toxicological effects of Pb and Hg on primary human stem cells are due to different intracellular accumulation levels of these two toxicants. These findings allow new insights into the functional consequences of Pb and Hg for mammalian stem cells and into the cell biological behavior of AFS cells in response to toxicants.
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Affiliation(s)
- C Gundacker
- Institute of Medical Genetics, Medical University of Vienna, Währinger Straße 10, 1090 Vienna, Austria.
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Rosner M, Schipany K, Hengstschläger M. p70 S6K1 nuclear localization depends on its mTOR-mediated phosphorylation at T389, but not on its kinase activity towards S6. Amino Acids 2011; 42:2251-6. [PMID: 21710263 DOI: 10.1007/s00726-011-0965-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Accepted: 06/11/2011] [Indexed: 12/13/2022]
Abstract
The protein kinase p70 S6K1 is regulated in response to cytokines, nutrients and growth factors, and plays an important role in the development of a variety of human diseases. Mammalian target of rapamycin (mTOR) is known to phosphorylate and thereby activate p70 S6K1. p70 S6K1 phosphorylates different cytoplasmic and nuclear substrates involved in the regulation of protein synthesis, cell cycle, cell growth and survival. Recently, we have shown that mTOR-mediated phosphorylation of p70 S6K1 at T389 also regulates its nucleocytoplasmic localization. Since this phosphorylation is associated with its kinase activity the question whether p70 S6K1 phosphorylation or kinase activity is essential for its proper localization remained elusive. Recently, the chemical compound PF-4708671 has been demonstrated to block p70 S6K1 kinase activity while inducing its phosphorylation at T389. This potential of PF-4708671 to separate p70 S6K1 activity from its T389 phosphorylation allowed us to demonstrate that the proper nucleocytoplasmic localization of this kinase depends on its mTOR-mediated phosphorylation but not on its kinase activity. These findings provide important insights into the regulation of p70 S6K1 and allow a more detailed understanding of subcellular enzyme localization processes.
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Affiliation(s)
- M Rosner
- Institute of Medical Genetics, Medical University of Vienna, Währinger Strasse 10, 1090, Vienna, Austria
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Ben Simon GJ, Rosen N, Rosner M, Spierer A. Intralesional triamcinolone acetonide injection versus incision and curettage for primary chalazia: a prospective, randomized study. Am J Ophthalmol 2011; 151:714-718.e1. [PMID: 21257145 DOI: 10.1016/j.ajo.2010.10.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 10/14/2010] [Accepted: 10/15/2010] [Indexed: 10/18/2022]
Abstract
PURPOSE To compare treatment outcomes of intralesional triamcinolone acetonide (TA) injection with incision and curettage (I&C) for primary chalazia. DESIGN Prospective, randomized clinical trial. METHODS SETTING Institutional. STUDY POPULATION Ninety-four patients with primary chalazia after failed conservative treatment were randomized to either intralesional TA injection (4 mg) or I&C performed under local anesthesia. All patients underwent comprehensive eye examinations that included digital photography of the lesion. Complete resolution was defined as lesion regression of 95% to 100%. Treatment was considered a failure if no resolution was achieved after the first attempted I&C or TA injection. MAIN OUTCOME MEASURES Lesion resolution measured as 95% to 100% regression. RESULTS Ninety-four patients participated in the study: 42 underwent I&C and 52 underwent TA injection as the first treatment. Complete resolution was achieved in 33 (79%) of 42 patients in the I&C group and in 42 (81%) of 52 patients in the TA group (P=.8, chi-square analysis). The average time to resolution in the TA group was 5 days, with most patients (48/52; 92%) having received a single injection and 4 (8%) of 52 patients having received 2 injections. TA precipitates were detected in 6 (11.5%) of 52 patients and resolved spontaneously. There were no complications, such as eyelid depigmentation, increased intraocular pressure, or any loss of vision, in either group. CONCLUSIONS Intralesional TA injection is as effective as I&C in primary chalazia. Injection may be considered as an alternative first-line treatment in cases where diagnosis is straightforward and no biopsy is required.
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Abstract
PURPOSE NAP is the smallest active element of activity-dependent neuroprotective protein (ADNP) in the non-myelinated neural tissue. This study evaluated the neuroprotective effect of NAP in reducing the spread of laser-induced retinal damage in rat. METHODS Laser lesions were created in 72 DA pigmented rats. Two groups were treated by one intravenous or intravitreal injection of NAP immediately after exposure to laser. Two control groups were similarly administered saline injection. Histological and morphometrical evaluations of the lesions were preformed 3, 20 and 60 days after photocoagulation. RESULTS After intravitreal treatment with NAP, a significant reduction in the diameter of the laser-induced lesions was found 3 days after photocoagulation (p < 0.001) but not after 20 and 60 days while the systemic treatment significantly reduced lesion diameter 20 and 60 days after photocoagulation (p = 0.001). Significant difference in photoreceptor cell loss was found in eyes treated intravitreally only 3 days after photocoagulation (p = 0.002). In the systemically treated animals such effect was found only after 20 and 60 days (p < 0.001). CONCLUSIONS Treatment with NAP ameliorates laser-induced retinal lesions. Intravitreal treatment had an early short-term effect while the effect of systemic administration was delayed and prolonged. This treatment may be of clinical significance in reducing laser-induced retinal injuries in humans.
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Affiliation(s)
- Mark Belokopytov
- Goldschleger Eye Research Institute, Sackler School of Medicine, Tel Aviv University, Sheba Medical Center, Tel Hashomer, Israel.
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Habot-Wilner Z, Barequet IS, Ivanir Y, Moisseiev J, Rosner M. The inhibitory effect of different concentrations of topical bevacizumab on corneal neovascularization. Acta Ophthalmol 2010; 88:862-7. [PMID: 19549103 DOI: 10.1111/j.1755-3768.2009.01571.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
PURPOSE This study aimed to evaluate the effects of different concentrations of topically administered bevacizumab (Avastin) on experimental corneal neovascularization (NV) in rats. METHODS Corneal NV was induced by chemical cauterization with silver nitrate sticks applied to the centre of the corneas of 37 Wistar rats. The rats were then randomized to four topical treatment groups: group 1 (n = 10) received 4 mg/ml bevacizumab; group 2 (n = 9) received 2 mg/ml bevacizumab; group 3 (n = 10) received 1 mg/ml bevacizumab, and group 4 (n=8) represented a control group and received saline. All drops were initiated immediately after cauterization and applied twice per day for 7 days. Corneal NV was assessed 8 days after cauterization in a masked fashion, both qualitatively by clinical evaluation and quantitatively by blood vessel count in photographs of histological sections. RESULTS On clinical evaluation, groups 1 and 2 showed significantly less NV compared with the saline-treated control group (p = 0.006 and p = 0.024, respectively). Histopathological evaluation showed that only group 1 differed significantly from controls (5% significance level) and normal corneal epithelium was seen in all groups. CONCLUSIONS Topically administered bevacizumab at a concentration of 4 mg/ml significantly reduces corneal NV according to both clinical and histopathological evaluations; lower concentrations were less effective on both parameters. No corneal epitheliopathy was found using these concentrations.
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Affiliation(s)
- Zohar Habot-Wilner
- The Goldschleger Eye Institute, Tel-Aviv University, Tel Hashomer, Israel
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Levkovitch-Verbin H, Sadan O, Vander S, Rosner M, Barhum Y, Melamed E, Offen D, Melamed S. Intravitreal injections of neurotrophic factors secreting mesenchymal stem cells are neuroprotective in rat eyes following optic nerve transection. Invest Ophthalmol Vis Sci 2010; 51:6394-400. [PMID: 20926814 DOI: 10.1167/iovs.09-4310] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To evaluate the neuroprotective effect of intravitreal injections of neurotrophic factors secreting mesenchymal stem cells (NTF-SCs) on the survival of retinal ganglion cells (RGCs) in rat eyes after optic nerve transection (ONT). METHODS Rat and human bone marrow-derived mesenchymal stem cells (MSCs) were induced to secrete high levels of NTF. The neuroprotective effect from intravitreally injected untreated MSCs or NTF-SCs was compared with that from PBS injections using an ONT model in 146 rats. RGCs were labeled by applying rhodamine dextran to the orbital optic nerve or by injecting Fluorogold into the superior colliculus. Cell- and saline-treated eyes were compared 8 days after ONT. For tracking, MSCs and NTF-SCs were labeled with PKH26 and analyzed at 2 hours and at 10, 17, and 24 days using immunohistochemistry and RT-PCR. RESULTS Mean RGC survival at 8 days after transection increased significantly after intravitreal injections of human NTF-SCs (69% ± 3%) or of untreated human MSCs (66% ± 5%) versus PBS (46% ± 3%; P = 0.0005 and P = 0.03, respectively). In an additional set of experiments, human NTF-SCs versus PBS were significantly neuroprotective, but bone marrow-derived rat NTF-SCs were not (P = 0.001 and P = 0.1, respectively). Immunohistochemistry demonstrated that human-derived MSCs, human NTF-SCs, and rat-derived NTF-SCs survived at least 24 days after intravitreal injection. CONCLUSIONS Bone marrow-derived MSCs can deliver NTFs by intravitreal injection and can be neuroprotective after ONT. This approach might be further studied to deliver NTFs by autotransplantation in glaucomatous eyes.
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Affiliation(s)
- Hani Levkovitch-Verbin
- Goldschleger Eye Institute, Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel-Hashomer, Israel.
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Rosen N, Priel A, Simon GJB, Rosner M. Cryo-assisted anterior approach for surgery of retroocular orbital tumours avoids the need for lateral or transcranial orbitotomy in most cases. Acta Ophthalmol 2010; 88:675-80. [PMID: 19732050 DOI: 10.1111/j.1755-3768.2009.01515.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE To describe and evaluate a cryo-assisted, minimally invasive, anterior approach for orbital tumour surgery. METHODS Retrospective, non-comparative, consecutive, interventional case series of 103 patients who were operated on by the same surgeon for retroocular orbital tumours over the last 16 years. RESULTS A cryo-assisted, minimally invasive, anterior approach was employed in 63 out of the 103 patients (61.2%). In 37 patients (35.9%), anterior orbitotomy without the use of cryoprobe was employed for biopsy or excision of small, anteriorly located lesions. Lateral orbitotomy was used in three patients (2.9%). In a subgroup of 61 patients with circumscribed lesions (mainly cavernous haemangiomas and schwannomas), cryoextraction was used in 51 (83.6%). None of the procedures required conversion to lateral orbitotomy and there were no intraoperative complications. CONCLUSION In contrast to other reports on the treatment of orbital lesions, in the current case series surgery of most solid tumours and many other cystic or infiltrative lesions was achieved here via an anterior, cryo-assisted approach, and thus with minimal trauma to the orbit. This approach warrants more favourable consideration because the combination of the anterior approach with the use of cryoprobe and surgical microscope can yield successful results, even in patients with large or deeply located tumours - obviating in most of them the need for lateral or transcranial orbitotomies with bone flaps.
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Affiliation(s)
- Nachum Rosen
- The Goldschleger Eye Institute, Sackler Faculty of Medicine, Tel-Aviv University, Sheba Medical Centre, Tel-Hashomer, Israel
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Rosner M, Fuchs C, Dolznig H, Hengstschläger M. Different cytoplasmic/nuclear distribution of S6 protein phosphorylated at S240/244 and S235/236. Amino Acids 2010; 40:595-600. [DOI: 10.1007/s00726-010-0684-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Accepted: 06/29/2010] [Indexed: 12/21/2022]
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Dressler AC, Hudelist G, Fink-Retter A, Gschwantler-Kaulich D, Pfeiler G, Rosner M, Hengstschläger M, Singer CF. Tuberin und p27 Expression im sporadischen und BRCA-assoziierten Mammakarzinom. Geburtshilfe Frauenheilkd 2010. [DOI: 10.1055/s-0030-1252086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Abstract
The tuberous sclerosis gene 2 product tuberin is an important regulator of the mammalian target of rapamycin (mTOR). In addition, tuberin is known to bind to the cyclin-dependent kinase (CDK) inhibitor p27(Kip1) (p27) and to regulate its stability and localization via mTOR-independent mechanisms. Recently, evidence has been provided that tuberin also affects p27 localization via regulating mTOR's potential to activate the serum- and glucocorticoid-inducible kinase (SGK1) to phosphorylate p27. Taken together, these findings strengthen the argument that besides mTOR-inhibitors, such as rapamycin analogues, p27 and CDKs could also be considered targets for hamartoma therapeutics in tuberous sclerosis.
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Affiliation(s)
- M Rosner
- Medical University of Vienna, Vienna, Austria
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Valli A, Rosner M, Fuchs C, Siegel N, Bishop CE, Dolznig H, Mädel U, Feichtinger W, Atala A, Hengstschläger M. Embryoid body formation of human amniotic fluid stem cells depends on mTOR. Oncogene 2009; 29:966-77. [PMID: 19935716 DOI: 10.1038/onc.2009.405] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human amniotic fluid stem cells (hAFSCs) harbor high proliferative capacity and high differentiation potential and do not raise the ethical concerns associated with human embryonic stem cells. The formation of three-dimensional aggregates known as embryoid bodies (EBs) is the principal step in the differentiation of pluripotent embryonic stem cells. Using c-Kit-positive hAFSC lines, we show here that these stem cells harbor the potential to form EBs. As part of the two kinase complexes, mTORC1 and mTORC2, mammalian target of rapamycin (mTOR) is the key component of an important signaling pathway, which is involved in the regulation of cell proliferation, growth, tumor development and differentiation. Blocking intracellular mTOR activity through the inhibitor rapamycin or through specific small interfering RNA approaches revealed hAFSC EB formation to depend on mTORC1 and mTORC2. These findings demonstrate hAFSCs to be a new and powerful biological system to recapitulate the three-dimensional and tissue level contexts of in vivo development and identify the mTOR pathway to be essential for this process.
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Affiliation(s)
- A Valli
- Department of Medical Genetics, Medical University of Vienna, Vienna, Austria
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Barequet IS, Habot-Wilner Z, Mann O, Safrin M, Ohman DE, Kessler E, Rosner M. Evaluation of Pseudomonas aeruginosa staphylolysin (LasA protease) in the treatment of methicillin-resistant Staphylococcus aureus endophthalmitis in a rat model. Graefes Arch Clin Exp Ophthalmol 2009; 247:913-7. [PMID: 19280208 DOI: 10.1007/s00417-009-1061-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2008] [Revised: 02/11/2009] [Accepted: 02/15/2009] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Therapy of S. aureus ocular infections is increasingly challenging due to emerging resistant strains. Staphylolysin (also called LasA protease) is a staphylolytic endopeptidase secreted by Pseudomonas aeruginosa. The purpose of this study was to evaluate the efficacy of staphylolysin as a therapy for experimental methicillin-resistant Staphylococcus aureus (MRSA) endophthalmitis, focusing on its bactericidal activity. METHODS Endophthalmitis was induced in the right eyes of 46 rats by an intravitreal injection of 50-160 MRSA cells. Two therapeutic regimens were evaluated: (i) an intravitreal injection of staphylolysin at 6 hours post-infection; (ii) two successive intravitreal injections of staphylolysin given at 6 and 30 hours post-infection. Control eyes were injected with vehicle alone at the same times. The rats were sacrificed 48 hours after infection, and the vitreous was withdrawn for determination of colony forming units (CFU). Potential adverse effects of intravitreal staphylolysin injection were assessed histopathologically in four uninfected eyes, enucleated from rats sacrificed 1 month after intravitreal staphylolysin injection. RESULTS In eyes treated by the single-injection regimen, staphylolysin reduced the mean CFU value per vitreous threefold as compared to control (2,055 +/- 3,144 and 6,432 +/- 6,389 CFU/vitreous, respectively; P = 0.02). The repeated injection protocol was more effective, reducing the mean CFU value per vitreous by two orders of magnitude as compared to control (1,148 +/- 3,096 and 143,519 +/- 151,358 CFU/vitreous, respectively; P = 0.0005). Histopathological analysis showed no structural damage in eyes injected intravitreally with staphylolysin. CONCLUSIONS Staphylolysin is effective in the treatment of experimental MRSA-induced endophthalmitis in rats, and causes no morphological adverse effects to ocular tissues. Staphylolysin may be beneficial in the treatment of S. aureus endophthalmitis in humans.
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Affiliation(s)
- Irina S Barequet
- Maurice and Gabriela Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Sheba Medical Center, Tel Hashomer, Israel.
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Abstract
PURPOSE To report a patient with atypical idiopathic orbital inflammation who was successfully treated with intra-orbital injections of triamcinolone acetonide. METHODS Interventional case report and literature review. MAIN OUTCOME MEASURES Resolution of orbital inflammation. RESULTS A 71-year-old female with right orbital mass and conjunctival inflammation underwent orbital biopsy that was consistent with the diagnosis of atypical idiopathic orbital inflammation. Inflammation has deteriorated despite oral steroids. The patient underwent two additional orbital biopsies that confirmed the initial diagnosis. Intra-orbital injections of triamcinolone acetonide resulted in significant improvement and cessation of active inflammation. CONCLUSIONS Intra-orbital injections of triamcinolone acetonide may be an effective alternative in patients with atypical idiopathic orbital inflammation unresponsive to systemic steroids.
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Affiliation(s)
- Alon Skaat
- Goldschleger Eye Institute, Sheba Medical Center, Tel Hashomer, Israel
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Shulman S, Belokopytov M, Dubinsky G, Belkin M, Rosner M. Ameliorative effect of PN-277 on laser-induced retinal damage. Graefes Arch Clin Exp Ophthalmol 2008; 247:343-8. [PMID: 18987871 DOI: 10.1007/s00417-008-0975-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Revised: 08/14/2008] [Accepted: 10/06/2008] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The retinal damage induced by laser photocoagulation increases considerably by the secondary degeneration process whereby tissues adjacent to the primary lesion are destroyed. As the neuroprotective effect of immunization by PN-277 was previously demonstrated in models of retina, optic nerve, brain, and spinal cord lesions, it may be used also for reducing retinal damage induced by laser. The aim of this study was to evaluate the neuroprotective effect of immunization with PN-277 in reducing the spread of laser-induced retinal damage. METHODS Standard argon laser lesions were created in 36 DA pigmented rats. Seven days before exposure to laser, the rats were divided into a test group (n = 18) that was pre-immunized with intraperitoneal injection of PN-277 and control group (n = 18) treated with saline. Histological and morphometrical evaluations of the retinal lesions were preformed 3, 20, and 60 days after the injury. RESULTS Significant ameliorative effect was demonstrated in the retinas of the pre-immunized animals 60 days after exposure to laser. The diameter of the lesion was 356 microm as compared with 406 microm (P < 0.01), the cell density of the photoreceptor cell bodies measured in the whole lesion was 72.4% of normal as compared with 64.5% (P = 0.01), and at the center of the lesion it was 57.3% of normal as compared with 38.2% (P < 0.01) (treated and control groups, respectively). CONCLUSIONS Immunization with PN-277 has an ameliorative effect in neural tissue such as the retina. This type of immunization may be of clinical significance in reducing laser-induced retinal injuries in humans.
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Affiliation(s)
- Shiri Shulman
- Ophthalmology Department, Sapir Medical Centre, Kfar-Sava, Israel
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Yfanti C, Mengele K, Weirich G, Giersig C, Rosner M, Schmitt M. Expression of metalloprotease insulin-degrading enzyme (insulysin) in breast and ovarian cancer tissues. Geburtshilfe Frauenheilkd 2008. [DOI: 10.1055/s-0028-1088826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Katorza E, Rosner M, Zalel Y, Gilboa Y, Achiron R. Prenatal ultrasonographic diagnosis of persistent hyperplastic primary vitreous. Ultrasound Obstet Gynecol 2008; 32:226-228. [PMID: 18634129 DOI: 10.1002/uog.5385] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Persistent hyperplastic primary vitreous (PHPV) is a rare developmental malformation of the eye characterized by the presence of a vascular membrane located behind the lens. We report, for the first time in the literature, the identification on ultrasound examination of bilateral cataract and thickened hyaloid artery-lens junction, leading to a diagnosis of bilateral PHPV, in a fetus at 23 weeks' gestation. Histological examination at postmortem confirmed the prenatal diagnosis of bilateral PHPV and cataract. A thorough ultrasound examination of the fetal eye in cases with cataract is recommended.
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Affiliation(s)
- E Katorza
- Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center, Tel Hashomer, Israel.
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