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Yakushev A, Lens L, Düllmann CE, Block M, Brand H, Calverley T, Dasgupta M, Di Nitto A, Götz M, Götz S, Haba H, Harkness-Brennan L, Herzberg RD, Heßberger FP, Hinde D, Hübner A, Jäger E, Judson D, Khuyagbaatar J, Kindler B, Komori Y, Konki J, Kratz J, Krier J, Kurz N, Laatiaoui M, Lommel B, Lorenz C, Maiti M, Mistry A, Mokry C, Nagame Y, Papadakis P, Såmark-Roth A, Rudolph D, Runke J, Sarmiento L, Sato T, Schädel M, Scharrer P, Schausten B, Steiner J, Thörle-Pospiech P, Toyoshima A, Trautmann N, Uusitalo J, Ward A, Wegrzecki M, Yakusheva V. First Study on Nihonium (Nh, Element 113) Chemistry at TASCA. Front Chem 2021; 9:753738. [PMID: 34917588 PMCID: PMC8669335 DOI: 10.3389/fchem.2021.753738] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 08/10/2021] [Accepted: 10/27/2021] [Indexed: 11/13/2022] Open
Abstract
Nihonium (Nh, element 113) and flerovium (Fl, element 114) are the first superheavy elements in which the 7p shell is occupied. High volatility and inertness were predicted for Fl due to the strong relativistic stabilization of the closed 7p 1/2 sub-shell, which originates from a large spin-orbit splitting between the 7p 1/2 and 7p 3/2 orbitals. One unpaired electron in the outermost 7p 1/2 sub-shell in Nh is expected to give rise to a higher chemical reactivity. Theoretical predictions of Nh reactivity are discussed, along with results of the first experimental attempts to study Nh chemistry in the gas phase. The experimental observations verify a higher chemical reactivity of Nh atoms compared to its neighbor Fl and call for the development of advanced setups. First tests of a newly developed detection device miniCOMPACT with highly reactive Fr isotopes assure that effective chemical studies of Nh are within reach.
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Affiliation(s)
- A. Yakushev
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - L. Lens
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Ch. E. Düllmann
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - M. Block
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - H. Brand
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - T. Calverley
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - M. Dasgupta
- Department of Nuclear Physics, Australian National University, Canberra, ACT, Australia
| | - A. Di Nitto
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - M. Götz
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - S. Götz
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | | | | | - R-D. Herzberg
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - F. P. Heßberger
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - D. Hinde
- Department of Nuclear Physics, Australian National University, Canberra, ACT, Australia
| | - A. Hübner
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - E. Jäger
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - D. Judson
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - J. Khuyagbaatar
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - B. Kindler
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | | | - J. Konki
- Department of Physics, University of Jyväskylä, Jyväskylä, Finland
| | - J.V. Kratz
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - J. Krier
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - N. Kurz
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - M. Laatiaoui
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - B. Lommel
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | | | - M. Maiti
- Indian Institute of Technology Roorkee, Roorkee, India
| | - A.K. Mistry
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - Ch. Mokry
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Y. Nagame
- Japan Atomic Energy Agency, Tokai, Japan
| | - P. Papadakis
- Department of Physics, University of Jyväskylä, Jyväskylä, Finland
| | | | - D. Rudolph
- Department of Physics, Lund University, Lund, Sweden
| | - J. Runke
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | | | - T.K. Sato
- Japan Atomic Energy Agency, Tokai, Japan
| | - M. Schädel
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - P. Scharrer
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - B. Schausten
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - J. Steiner
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
| | - P. Thörle-Pospiech
- Helmholtz-Institut Mainz, Mainz, Germany
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | | | - N. Trautmann
- Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - J. Uusitalo
- Department of Physics, University of Jyväskylä, Jyväskylä, Finland
| | - A. Ward
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - M. Wegrzecki
- Łukasiewicz-Instytut Mikroelektroniki I Fotoniki, Warsaw, Poland
| | - V. Yakusheva
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
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Durán-Aranguren D, Chiriví-Salomón J, Anaya L, Durán-Sequeda D, Cruz L, Serrano J, Sarmiento L, Restrepo S, Sanjuan T, Sierra R. Effect of bioactive compounds extracted from Cordyceps nidus ANDES-F1080 on laccase activity of Pleurotus ostreatus ANDES-F515. Biotechnol Rep (Amst) 2020; 26:e00466. [PMID: 32617265 PMCID: PMC7322798 DOI: 10.1016/j.btre.2020.e00466] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/21/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Laccases are ligninolytic enzymes produced by different microorganisms, especially by fungi such as the white-rot fungus Pleurotus ostreatus. Chemical inductors have been used to promote laccase secretion due to the application of these enzymes in lignocellulosic biomass pretreatment. Cordyceps nidus ANDES-F1080 was previously described as a source of bioactive compounds that could influence the enzymatic production system of other fungi. For that reason, this study evaluates the effect of C. nidus' ANDES-F1080 extracts on the laccase activity of P. ostreatus ANDES-F515. To achieve this objective, C. nidus ANDES-F1080 was grown in four different substrates: two artificial-based and two natural-based culture media. Metabolites were extracted from C. nidus ANDES-F1080 using water and methanol as solvents. Biochemical characterization of these extracts was performed to complement the analysis of their effect on laccase activity. Our results revealed an enhancement on the laccase activity of P. ostreatus ANDES-F515 grown in natural-based cultures when C. nidus' ANDES-F1080 extracts were supplemented. The best laccase activities registered values around 10,575 ± 813 U·L-1.
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Affiliation(s)
- D. Durán-Aranguren
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - J.S. Chiriví-Salomón
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
- Conservación, Bioprospección y Desarrollo Sostenible, Escuela de Ciencias Agrícolas, Pecuarias y del Medio Ambiente, Universidad Nacional Abierta y a Distancia, Bogotá, Colombia
| | - L. Anaya
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - D. Durán-Sequeda
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - L.J. Cruz
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - J.D. Serrano
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - L. Sarmiento
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - S. Restrepo
- Laboratory of Mycology and Plant Diseases, Department of Biological Sciences, Universidad de Los Andes, Bogotá, Colombia
| | - T. Sanjuan
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - R. Sierra
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
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Howell S, Hoeks S, West R, Wheatcroft S, Hoeft A, Leva B, Plichon B, Damster S, Momeni M, Watremez C, Kahn D, Dincq AS, Danila A, Wittmann M, Struck R, Rüddel T, Kessler F, Rasche S, Matsota P, Hasani A, Gudaityte J, Karbonskiene A, Ferreira R, Carvalho S, Tomescu D, Martac C, Grintescu I, Mirea L, Serrano L, Serrano L, Sierra P, Sabaté S, Hernando D, Matute P, Trashorras M, Suñé M, Sarmiento L, Hervias A, González O, Hermina A, González O, Hermina A, Navarro Perez R, Orts M, Fernandez-Garcia R, Sanchez Pérez D, Sepulveda Gil I, Monedero P, Hidalgo F, Mbongo C, Pont A, Reyes H, Bartolo C, Galera S, Valentijn T, Stolker R, Tugrul M, Emre Demirel E, Hough M, Griffiths K, Birch S, Beardow Z, Elliot S, Thompson J, Bowrey S, Northey M, Melson H, Telford R, Nadolski M, Potter A, Fuller D, Rose A, Varma S, Simeson K, Pettit J, Smith N, Martinson V, Sleight L, Naylor C, Watt P, Raymode P, Dunk N, Twohey L, Hollos L, Davies S, Gibson A, Coleman Z, Tamm T, Joscak J, Zsisku L, Zuleika M, Carvalho P, Collyer T, Ryan J, Colling K, Dharmarajah S, Krishnan A, Paddle J, Fouracres A, Arnell K, Muhammad K. Prospective observational cohort study of the association between antiplatelet therapy, bleeding and thrombosis in patients with coronary stents undergoing noncardiac surgery. Br J Anaesth 2019; 122:170-179. [DOI: 10.1016/j.bja.2018.09.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/16/2018] [Accepted: 09/24/2018] [Indexed: 01/19/2023] Open
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Radenkovic M, Uvebrant K, Skog O, Sarmiento L, Avartsson J, Storm P, Vickman P, Bertilsson PA, Fex M, Korgsgren O, Cilio CM. Characterization of resident lymphocytes in human pancreatic islets. Clin Exp Immunol 2016; 187:418-427. [PMID: 27783386 DOI: 10.1111/cei.12892] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2016] [Indexed: 12/25/2022] Open
Abstract
The current view of type 1 diabetes (T1D) is that it is an immune-mediated disease where lymphocytes infiltrate the pancreatic islets, promote killing of beta cells and cause overt diabetes. Although tissue resident immune cells have been demonstrated in several organs, the composition of lymphocytes in human healthy pancreatic islets have been scarcely studied. Here we aimed to investigate the phenotype of immune cells associated with human islets of non-diabetic organ donors. A flow cytometry analysis of isolated islets from perfused pancreases (n = 38) was employed to identify alpha, beta, T, natural killer (NK) and B cells. Moreover, the expression of insulin and glucagon transcripts was evaluated by RNA sequencing. Up to 80% of the lymphocytes were CD3+ T cells with a remarkable bias towards CD8+ cells. Central memory and effector memory phenotypes dominated within the CD8+ and CD4+ T cells and most CD8+ T cells were positive for CD69 and up to 50-70% for CD103, both markers of resident memory cells. The frequency of B and NK cells was low in most islet preparations (12 and 3% of CD45+ cells, respectively), and the frequency of alpha and beta cells varied between donors and correlated clearly with insulin and glucagon mRNA expression. In conclusion, we demonstrated the predominance of canonical tissue resident memory CD8+ T cells associated with human islets. We believe that these results are important to understand more clearly the immunobiology of human islets and the disease-related phenotypes observed in diabetes.
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Affiliation(s)
- M Radenkovic
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - K Uvebrant
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - O Skog
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University Hospital, Uppsala, Sweden
| | - L Sarmiento
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - J Avartsson
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - P Storm
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - P Vickman
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - P-A Bertilsson
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - M Fex
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
| | - O Korgsgren
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University Hospital, Uppsala, Sweden
| | - C M Cilio
- Department of Clinical Sciences, Lund University Diabetes Center, Lund University, Malmö, Sweden
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Khuyagbaatar J, Yakushev A, Düllmann C, Ackermann D, Andersson LL, Block M, Brand H, Even J, Forsberg U, Hartmann W, Herzberg RD, Heßberger F, Hoffmann J, Hübner A, Jäger E, Jeppsson J, Kindler B, Kratz J, Krier J, Kurz N, Lommel B, Maiti M, Minami S, Rudolph D, Runke J, Sarmiento L, Schädel M, Schausten B, Steiner J, Heidenreich TTD, Uusitalo J, Wiehl N, Yakusheva V. Fission in the landscape of heaviest elements: Some recent examples. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201613103003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ortega F, Sarmiento L, Mompeo B, Centol A, Nicolaides A, Leon M, Christopoulos N. Morphological Study of the Valvular Distribution in the Long Saphenous Vein. Phlebology 2016. [DOI: 10.1177/026835559400900204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective: To measure the distribution of valves in the long saphenous vein. Design: Morphological study of the intervalvular distance of the long saphenous vein. Setting: Department of Morfología, Facultad de Ciencias de la Salud (Universidad de Las Palmas de Gran Canaria, Spain) and Academic Vascular Surgery Unit, St Mary's Hospital, London, UK. Material: Twenty lower extremities from adult cadavers with no evidence of lower limb venous disease. Methods: Anatomical dissection of the long saphenous vein, with accurate measurement of valve distribution. Results: There were on average 8.7 valves in the long saphenous vein, with 6.3 above the knee and 2.4 below the knee. Conclusion: Contrary to classical anatomical texts on this subject there are more valves in the long saphenous vein in the thigh than in the calf.
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Affiliation(s)
- F. Ortega
- Departmento de Morfología, Universidad de Las Palmas de Gran Canaria, Spain
| | - L. Sarmiento
- Departmento de Morfología, Universidad de Las Palmas de Gran Canaria, Spain
| | - B. Mompeo
- Departmento de Morfología, Universidad de Las Palmas de Gran Canaria, Spain
| | - A. Centol
- Unidad de Salud Laboral, Las Palmas de Gran Canaria, Spain
| | - A. Nicolaides
- Irvine Laboratory, Academic Vascular Surgery Unit, St Mary's Hospital, London, UK
| | - M. Leon
- Irvine Laboratory, Academic Vascular Surgery Unit, St Mary's Hospital, London, UK
| | - N. Christopoulos
- Irvine Laboratory, Academic Vascular Surgery Unit, St Mary's Hospital, London, UK
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Abstract
Objective: To study whether experimental streptozotocin (STZ) induced diabetes results in structural alterations to the venous wall of the femoral vein in adult rats, in order to develop further studies using this model. Design: A prospective study of femoral veins obtained from controls and STZ-induced diabetes rats. Setting: Department of Morphology, Universidad de Las Palmas de Gran Canaria, Spain. Interventions: Experimental diabetes induced by intraperitoneal injection of streptozotocin. Main outcome measures: The samples were studied at 6 and 12 weeks post-injection using light and transmission electron microscopy. Results: The results show that the venous wall is affected by an increase in the deposition of extracellular tissue. In addition the endothelial, muscular and adventitial cells show morphological changes. Conclusions: Our results demonstrate significant alterations in the venous wall due to hyperglycaemia in the STZ-animal model.
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Affiliation(s)
- B. Mompeó
- Department of Morphology, University of Las Palmas de Gran Canaria, Las Palmas, Spain
| | - F. Ortega
- Department of Morphology, University of Las Palmas de Gran Canaria, Las Palmas, Spain
| | - L. Sarmiento
- Department of Morphology, University of Las Palmas de Gran Canaria, Las Palmas, Spain
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Rudolph D, Forsberg U, Sarmiento L, Golubev P, Fahlander C. Superheavy-element spectroscopy: Correlations along element 115 decay chains. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611701001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hodik M, Anagandula M, Fuxe J, Krogvold L, Dahl-Jørgensen K, Hyöty H, Sarmiento L, Frisk G. Coxsackie-adenovirus receptor expression is enhanced in pancreas from patients with type 1 diabetes. BMJ Open Diabetes Res Care 2016; 4:e000219. [PMID: 27933184 PMCID: PMC5129002 DOI: 10.1136/bmjdrc-2016-000219] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/08/2016] [Accepted: 07/09/2016] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVES One of the theories connecting enterovirus (EV) infection of human islets with type 1 diabetes (T1D) is the development of a fertile field in the islets. This implies induction of appropriate proteins for the viral replication such as the coxsackie-adenovirus receptor (CAR). The aim of this study was to investigate to what extent CAR is expressed in human islets of Langerhans, and what conditions that would change the expression. DESIGN Immunohistochemistry for CAR was performed on paraffin-embedded pancreatic tissue from patients with T1D (n=9 recent onset T1D, n=4 long-standing T1D), islet autoantibody-positive individuals (n=14) and non-diabetic controls (n=24) individuals. The expression of CAR was also examined by reverse transcription PCR on microdissected islets (n=5), exocrine tissue (n=5) and on explanted islets infected with EV or exposed to chemokines produced by EV-infected islet cells. RESULTS An increased frequency of patients with T1D and autoantibody-positive individuals expressed CAR in the pancreas (p<0.039). CAR staining was detected more frequently in pancreatic islets from patients with T1D and autoantibody-positive subjects (15/27) compared with (6/24) non-diabetic controls (p<0.033). Also in explanted islets cultured in UV-treated culture medium from coxsackievirus B (CBV)-1-infected islets, the expression of the CAR gene was increased compared with controls. Laser microdissection of pancreatic tissue revealed that CAR expression was 10-fold higher in endocrine compared with exocrine cells of the pancreas. CAR was also expressed in explanted islets and the expression level decreased with time in culture. CBV-1 infection of explanted islets clearly decreased the expression of CAR (p<0.05). In contrast, infection with echovirus 6 did not affect the expression of CAR. CONCLUSIONS CAR is expressed in pancreatic islets of patients with T1D and the expression level of CAR is increased in explanted islets exposed to proinflammatory cytokines/chemokines produced by infected islets. T1D is associated with increased levels of certain chemokines/cytokines in the islets and this might be the mechanism behind the increased expression of CAR in TID islets.
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Affiliation(s)
- M Hodik
- Department of Immunology, Genetics and Pathology , Uppsala University, The Rudbeck Laboratory , Uppsala, Uppland , Sweden
| | - M Anagandula
- Department of Immunology, Genetics and Pathology , Uppsala University, The Rudbeck Laboratory , Uppsala, Uppland , Sweden
| | - J Fuxe
- Department of Microbiology, Tumor and Cell biology, Karolinska Institutet, Stockholm, Sweden
| | - L Krogvold
- Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo and Faculty of Medicine, University of Oslo, Oslo, Norway
| | - K Dahl-Jørgensen
- Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Oslo and Faculty of Medicine, University of Oslo, Oslo, Norway
| | - H Hyöty
- Department of Virology, University of Tampere, Tampere, Finland; FimlabLaboratories, Pirkanmaa Hospital District, Tampere, Finland
| | - L Sarmiento
- Autoimmunity Unit, Department of Clinical Sciences , Skåne University Hospital, Lund University , Malmo , Sweden
| | - G Frisk
- Department of Immunology, Genetics and Pathology , Uppsala University, The Rudbeck Laboratory , Uppsala, Uppland , Sweden
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Forsberg U, Rudolph D, Golubev P, Sarmiento L, Yakushev A, Andersson LL, Nitto AD, Düllmann C, Gates J, Gregorich K, Gross C, Heßberger F, Herzberg RD, Khuyagbaatar J, Kratz J, Rykaczewski K, Schädel M, Åberg S, Ackermann D, Block M, Brand H, Carlsson B, Cox D, Derkx X, Eberhardt K, Even J, Fahlander C, Gerl J, Jäger E, Kindler B, Krier J, Kojouharov I, Kurz N, Lommel B, Mistry A, Mokry C, Nitsche H, Omtvedt J, Papadakis P, Ragnarsson I, Runke J, Schaffner H, Schausten B, Thörle-Pospiech P, Torres T, Traut T, Trautmann N, Türler A, Ward A, Ward D, Wiehl AN. Spectroscopic Tools Applied to Element Z = 115 Decay Chains. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146602036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Sarmiento L, Cabrera-Rode E, Díaz-Horta O. CorrespondenceLack of Association of Latent Autoimmune Diabetes in Adults (LADA) with Enterovirus Infection. Autoimmunity 2009; 37:245-6. [PMID: 15497460 DOI: 10.1080/08916930410001709200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nordet P, Lopez R, Dueñas A, Sarmiento L. Prevention and control of rheumatic fever and rheumatic heart disease: the Cuban experience (1986-1996-2002). Cardiovasc J Afr 2008; 19:135-40. [PMID: 18568172 PMCID: PMC3974561] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Rheumatic fever (RF) and rheumatic heart disease (RHD) are still major medical and public health problems mainly in developing countries. Pilot studies conducted during the last five decades in developed and developing countries indicated that the prevention and control of RF/RHD is possible. During the 1970s and 1980s, epidemiological studies were carried out in selected areas of Cuba in order to determine the prevalence and characteristics of RF/RHD, and to test several long-term strategies for prevention of the diseases. METHODS Between 1986 and 1996 we carried out a comprehensive 10-year prevention programme in the Cuban province of Pinar del Rio and evaluated its efficacy five years later. The project included primary and secondary prevention of RF/RHD, training of personnel, health education, dissemination of information, community involvement and epidemiological surveillance. Permanent local and provincial RF/RHD registers were established at all hospitals, policlinics and family physicians in the province. Educational activities and training workshops were organised at provincial, local and health facility level. Thousands of pamphlets and hundreds of posters were distributed, and special programmes were broadcast on the public media to advertise the project. RESULTS There was a progressive decline in the occurrence and severity of acute RF and RHD, with a marked decrease in the prevalence of RHD in school children from 2.27 patients per 1,000 children in 1986 to 0.24 per 1,000 in 1996. A marked and progressive decline was also seen in the incidence and severity of acute RF in five- to 25-year-olds, from 18.6 patients per 100,000 in 1986 to 2.5 per 100,000 in 1996. There was an even more marked reduction in recurrent attacks of RF from 6.4 to 0.4 patients per 100,000, as well as in the number and severity of patients requiring hospitalisation and surgical care. Regular compliance with secondary prophylaxis increased progressively and the direct costs related to treatment of RF/RHD decreased with time. The implementation of the programme did not incur much additional cost for healthcare. Five years after the project ended, most of the measures initiated at the start of the programme were still in place and occurrence of RF/RHD was low.
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Affiliation(s)
- P Nordet
- World Health Organisation, Geneva, Switzerland.
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Centurión F, Echeverría S, Canul N, Ake R, Alfaro M, Santos R, Sarmiento L. OC4 Influence of Seminal Plasma Added to Highly Diluted Semen on Sperm Motility of Young Boar Feed with Selenium and Vitamin E. Reprod Domest Anim 2006. [DOI: 10.1111/j.1439-0531.2006.00774_1_4.x] [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: 11/30/2022]
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Cabrera-Rode E, Sarmiento L, Tiberti C, Molina G, Barrios J, Hernández D, Díaz-Horta O, Di Mario U. Type 1 diabetes islet associated antibodies in subjects infected by echovirus 16. Diabetologia 2003; 46:1348-53. [PMID: 12898016 DOI: 10.1007/s00125-003-1179-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2002] [Revised: 04/23/2003] [Indexed: 02/05/2023]
Abstract
AIMS/HYPOTHESIS To determine whether the emergent infection by echovirus 16 that occurred in Cuba during the year 2000 was related to the presence of Type 1 diabetes associated autoantibodies. METHODS The presence of ICA, IAA, GADA, IA2 antibodies and neutralizing antibodies (NtAb) to echovirus 16 were determined in sera from 38 infected children and adolescents and 80 control subjects, matched in sex, age, local residence and time of sample collection. RESULTS The occurrence of a large-scale echovirus 16 epidemic was associated with the appearance of humoral autoimmune markers of Type 1 diabetes, especially for ICA, IAA and GADA. In the convalescent stage, ICA, IAA and GADA seroconversion was shown in 92.1%, 44.7% and 28.9% of echovirus 16 infected subjects. None of the 80 uninfected subjects had ICA or IAA, while one was GADA positive. ICA, IAA and GADA frequency was higher in the convalescent than in the acute stage (p<0.0005). A strong positive correlation was found between the NtAb to echovirus 16 and ICA titres in both acute and convalescent stage (r=0.91; p<0.0001, r=0.55; p=0.0003 respectively). CONCLUSION/INTERPRETATION This work provides evidence of an association between echovirus 16 infection and the presence of Type 1 diabetes related antibodies (ICA, IAA and GADA). Our data show that the echovirus 16 infection might be capable of inducing a process of autoimmune beta-cell damage and support the hypothesis that enterovirus infections are important risk factors for the development of Type 1 diabetes.
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Affiliation(s)
- E Cabrera-Rode
- Department of Immunology of Diabetes, National Institute of Endocrinology, Zapata and D, Havana 10 400, Cuba.
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Más Lago P, Cáceres VM, Galindo MA, Gary HE, Valcarcel M, Barrios J, Sarmiento L, Avalos I, Bravo JA, Palomera R, Bello M, Sutter RW, Pallansch MA, de Quadros CA. Persistence of vaccine-derived poliovirus following a mass vaccination campaign in Cuba: implications for stopping polio vaccination after global eradication. Int J Epidemiol 2001; 30:1029-34. [PMID: 11689516 DOI: 10.1093/ije/30.5.1029] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [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: 11/14/2022] Open
Abstract
BACKGROUND With substantial progress made toward polio eradication, developing the appropriate strategy for discontinuing global oral poliovirus vaccine (OPV) after global eradication becomes increasingly important. At issue is the theoretical risk of independent circulation of potentially virulent OPV-derived strains. Because Cuba uses OPV only in mass campaigns, it represents an ideal site to assess vaccine-derived poliovirus persistence. METHODS Infants born after the 1997 biannual mass campaigns were evaluated for past (neutralizing antibody) or current (virus excretion) evidence of vaccine-derived poliovirus exposure. We obtained sera and/or stool specimens from 861 infants; a second serum from 218 infants. RESULTS All stool specimens were poliovirus negative. Of 762 infants, 113 (14.8%) had initially detectable poliovirus type 1 antibody, 193 (25.3%) type 2, and 94 (12.3%) type 3. A precipitous antibody decline occurred in initially positive sera. CONCLUSIONS Our results suggest that in a country with high population immunity, vaccine-derived virus is unlikely to establish ongoing circulation.
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Affiliation(s)
- P Más Lago
- Pedro Kouri Institute for Tropical Medicine, Havana, Cuba.
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Lago PM, Guzmán MG, Sarmiento L, Pérez AB, Alvarez M, Capó V, Avalos I, Flores GK. Mechanism of enterovirus involvement in epidemic neuropathy: hypothesis regarding pathophysiology. Med Hypotheses 2001; 56:339-47. [PMID: 11359357 DOI: 10.1054/mehy.2000.1222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/18/2022]
Abstract
During the epidemic of optic and peripheral neuropathy which occurred in Cuba in 1992-1993, viruses antigenically related to the Coxsackie viruses were isolated from cerebrospinal fluid of patients. Concurrently with the virologic studies, epidemiologic, toxicologic, nutritional, immunologic, and histopathologic investigations were also carried out. Although it was demonstrated that the illness was associated with toxic and nutritional risk factors, it has not been possible to identify a specific etiology for the symptoms observed. Taking into consideration the results obtained in all of the various investigations, we have formulated an integral, multifactorial hypothesis which attempts to explain a pathophysiologic mechanism by which the viruses isolated could participate in the pathogenesis of the illness. We propose that the viral agents produce a persistent infection, and the possibility that they may act as mediator of an autoimmune pathogenic process.
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Affiliation(s)
- P M Lago
- Pedro Kouri Institute of Tropical Medicine (IPK), Havana, Cuba; Autopista Novia del Mediodia, Km 6, PO Box 601, La Lisa, Cuba
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Abstract
From April to September 2000, an epidemic of aseptic meningitis spread throughout Cuba, with 16,943 reported cases. Virologic studies identified echovirus 16 as the cause of this epidemic. This is the first reported isolate of echovirus 16 from patients with viral meningitis in Cuba.
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MESH Headings
- Adolescent
- Adult
- Age Distribution
- Cerebrospinal Fluid/virology
- Child
- Child, Preschool
- Cuba/epidemiology
- Disease Outbreaks
- Echovirus Infections/diagnosis
- Echovirus Infections/epidemiology
- Echovirus Infections/virology
- Enterovirus B, Human/classification
- Enterovirus B, Human/genetics
- Enterovirus B, Human/isolation & purification
- Feces/virology
- Humans
- Incidence
- Infant
- Meningitis, Aseptic/diagnosis
- Meningitis, Aseptic/epidemiology
- Meningitis, Aseptic/virology
- Meningitis, Viral/diagnosis
- Meningitis, Viral/epidemiology
- Meningitis, Viral/virology
- Middle Aged
- RNA, Viral/analysis
- Reverse Transcriptase Polymerase Chain Reaction
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Affiliation(s)
- L Sarmiento
- Pedro Kouri Tropical Medicine Institute, Havana, Cuba.
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Pérez-Schael I, González R, Fernández R, Alfonzo E, Inaty D, Boher Y, Sarmiento L. Epidemiological features of rotavirus infection in Caracas, Venezuela: implications for rotavirus immunization programs. J Med Virol 1999; 59:520-6. [PMID: 10534736 DOI: 10.1002/(sici)1096-9071(199912)59:4<520::aid-jmv16>3.0.co;2-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [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: 11/07/2022]
Abstract
The epidemiological features of rotavirus infection may be quite relevant for evaluation of the performance of a rotavirus vaccine in different settings, as well as for monitoring its impact during vaccination under routine conditions. This article describes some important issues regarding rotavirus epidemiology in Venezuela, where major field trials of rotavirus vaccine have been carried out. Rotaviruses was significantly more frequently observed in inpatient (43%) than in outpatient (21%) consultations for diarrhea in infants and young children. There was a high prevalence of rotavirus illness, regardless of socioeconomic conditions, but the risk of dehydration was greater among the lower socioeconomic groups. Rotavirus disease occurs year-round, with a slight seasonal pattern. Eighty-five percent of rotavirus-positive diarrheal episodes, as well as 86% of cases of dehydration due to rotavirus, occurred during the first year of life. However, rotavirus illnesses occur less commonly during the first months of life (0-2 months), which may be a result of protection by transplacental antibodies. The pattern of acquisition of rotavirus antibody was consistent with this age distribution of disease and with optimal age for vaccination. Thus, regional epidemiological characteristics of rotavirus infection may affect optimal performance of rotavirus vaccine.
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Affiliation(s)
- I Pérez-Schael
- Sección de Investigación de Enfermedades Entéricas, Instituto de Biomedicina/UCV/MSAS, Fuvesin, Caracas, Venezuela.
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Mompeõ B, Ortega F, Sarmiento L, Castaño I. Ultrastructural analogies between intimal alterations in veins from diabetic patients and animals with STZ-induced diabetes. Ann Vasc Surg 1999; 13:294-301. [PMID: 10347263 DOI: 10.1007/s100169900260] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The aim of this study was to document similarities and differences between veins from human diabetic patients and an experimentally induced diabetic animal model. The saphenous vein and posterior tibial vein from diabetic patients and the femoral vein from rats were studied. An increase in the extracellular matrix with migration of smooth muscle cells and endothelial alterations were observed in the intima of all specimens. These findings demonstrate that there is a high degree of similarity between the pathological changes in the venous wall during human diabetes mellitus and streptozotocin (STZ) induced-diabetes. This finding validates STZ induced-diabetes in rats as a model for further experimental study to clarify the fate of the diabetic venous wall when used as a graft.
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Affiliation(s)
- B Mompeõ
- Centro de Ciencias de la Salud, University of Las Palmas de Gran Canaria, Spain
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Sarmiento L, Chacón D, Valdivia A, Savón C, Goyenechea A. [Application of the polymerase chain reaction for detecting respiratory syncytial virus]. Rev Cubana Med Trop 1998; 49:21-3. [PMID: 9685955] [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: 02/08/2023]
Abstract
The polymerase chain reaction (PCR) was developed in order to identify the respiratory syncytial virus by using the reference strain. The high sensitivity and specificity obtained show the PCR utility for detecting the RSV genoma and its application on the diagnosis.
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Más Lago P, Guzmán MG, Sarmiento L, Pérez AB, Alvarez M, Capó V, Kourí G. [Mechanism of Enterovirus participation in epidemic neuropathy. Physiopathological hypothesis]. Rev Cubana Med Trop 1998; 49:186-95. [PMID: 9685986] [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: 02/08/2023]
Abstract
During the epidemic neuropathy occurred in Cuba from 1992 to 1993, viral isolations antigenically connected with Coxsackie viruses were obtained from the cerebrospinal fluid of patients. Virological, epidemiological, toxicologic, nutritional, immunological and histopathological investigations were made. Though the disease was related to toxic and nutritional factors, it has been impossible to identify the cause of the epidemic. Taking into consideration the results of the different investigations, we have formulated a comprehensive and multifactorial hypothesis to explain the physiopathological mechanism of the participation of the isolated viruses as mediators in a process of autoimmunity of the pathogeny of the disease.
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Affiliation(s)
- P Más Lago
- Instituto de Medicina Tropical Pedro Kourí, Ciudad de La Habana, Cuba
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Abstract
Some believe that asteroid bodies (AB) in sporotrichosis are nonspecific and are equivalent to the AB of sarcoidosis and other granulomatous diseases. We studied 25 skin biopsy specimens of sporotrichosis in which AB were demonstrated, ten of them with Sporothrix-positive culture. Immunohistochemistry was performed in paraffin-embedded biopsy specimens using an anti-Sporothrix antibody. The same procedures were done with seven biopsy specimens of lobomycosis, which contained AB within giant cells. These did not react with the anti-Sporothrix antibody, and by electron microscopy they displayed filamentous and myelin figures similar to the AB of sarcoidosis. In sporotrichosis, the AB are extracellular eosinophilic structures, 15-35 microm in diameter, and located within abscesses. One to three are found in a section. They consist of a central yeast, surrounded by eosinophilic spicules. The yeast stains with the anti-Sporothrix antibody, while the spicules do not. Therefore, AB in sporotrichosis are specific for disease. Visualization of the spicules alone can lead to the demonstration of the AB in adjacent sections, and thus is a useful clue in the diagnosis of sporotrichosis. Sporotrichotic AB must not be confused with the intracellular AB seen in giant cells of granulomatous reactions, which are filamentous and myelin figures that contain lipid.
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Affiliation(s)
- G Rodríguez
- Department of Pathology, National Institute of Health, School of Medicine, National University, Bogotá, Colombia
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Valdivia A, Chacón D, Savón C, Oropesa S, Sarmiento L, Valdes O, Otero A, Rosario D, Goyenechea A. Molecular characterization of an outbreak of respiratory syncytial virus (subgroup A) in Havana, Cuba, by monoclonal antibodies and restriction mapping (N gene). Clin Diagn Lab Immunol 1997; 4:633-4. [PMID: 9302221 PMCID: PMC170616 DOI: 10.1128/cdli.4.5.633-634.1997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Twenty-one respiratory syncytial virus (RSV) strains isolated from one outbreak in Havana, Cuba (1994 to 1995), were analyzed to determine their relatedness. All isolated strains were classified as subgroup A by monoclonal antibodies. Of 21 RSV strains examined, 20 were classified as having restriction pattern NP4 and only 1 was classified as having restriction pattern NP5.
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Affiliation(s)
- A Valdivia
- Instituto de Medicina Tropical Pedro Kouri, Havana, Cuba
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Valdivia A, Savón C, Chacón D, Sarmiento L, Morier L, Otero A, Soto Y, Oropesa S, Goyenechea A. Analysis of respiratory syncytial virus in clinical samples by reverse transcriptase-polymerase chain reaction restriction mapping. Mem Inst Oswaldo Cruz 1997; 92:389-93. [PMID: 9332606 DOI: 10.1590/s0074-02761997000300015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 02/05/2023] Open
Abstract
The aim of this study was to develop a polymerase chain reaction (PCR) for the detection of respiratory syncytial virus (RSV) genomes. The primers were designed from published sequences and selected from conserved regions of the genome encoding for the N protein of subgroups A and B of RSV. PCR was applied to 20 specimens from children admitted to the respiratory ward of "William Soler" Pediatric Hospital in Havana City with a clinical diagnosis of bronchiolitis. The PCR was compared with viral isolation and with an indirect immunofluorescence technique that employs monoclonal antibodies of subgroups A and B. Of 20 nasopharyngeal exudates, 10 were found positive by the three assayed methods. In only two cases, samples that yielded positive RNA-PCR were found negative by indirect immunofluorescence and cell culture. Considering viral isolation as the "gold standard" technique, RNA-PCR had 100% sensitivity and 80% specificity. RNA-PCR is a specific and sensitive technique for the detection of the RSV genome. Technical advantages are discussed.
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Affiliation(s)
- A Valdivia
- Instituto de Medicina Tropical Pedro Kouri, La Habana, Cuba
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Goyenechea A, Razon R, Savon C, Valdivia A, Chacon D, Sarmiento L. Rapid detection of respiratory syncytial virus by indirect immunofluorescence in infants hospitalized with acute respiratory disease. Mem Inst Oswaldo Cruz 1996; 91:489-90. [PMID: 9070408 DOI: 10.1590/s0074-02761996000400016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- A Goyenechea
- Instituto de Medicina Tropical Pedro Kouri, Ciudad de la Habana, Cuba
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Villarreal H, Exaire JE, Sarmiento L, Soní J. [Effect of Guanoxan on systemic and renal hemodynamics in essential arterial hypertension]. Arch Inst Cardiol Mex 1969; 39:809-13. [PMID: 5385957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Villarreal H, Exaire JE, Davila H, Sarmiento L. Inhibitory effect of chlorothiazide on natruretic action of mercurial diuretics. Geriatrics (Basel) 1968; 23:129-35. [PMID: 5634857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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