1
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Santos EV, Damasceno JD, Obonaga R, Rosales R, Black JA, McCulloch R, Tosi LRO. The dynamic subcellular localisation of Rad1 is cell cycle dependent in Leishmania major. Exp Parasitol 2023; 255:108639. [PMID: 37918502 DOI: 10.1016/j.exppara.2023.108639] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 10/15/2023] [Accepted: 10/21/2023] [Indexed: 11/04/2023]
Abstract
The subcellular localisation of Rad1, a subunit of the Leishmania major 9-1-1 complex, remains unexplored. Herein, we reveal that Rad1 localises predominantly to the nucleus. Upon hydroxyurea treatment, the diffuse nuclear localisation of Rad1 becomes more punctate, suggesting that Rad1 is responsive to replication stress. Moreover, Rad1 localisation correlates with cell cycle progression. In the majority of G1 to early S-phase cells, Rad1 localises predominantly to the nucleus. As cells progress from late-S phase to mitosis, Rad1 relocalizes to both the nucleus and the cytoplasm in ∼90 % of cells. This pattern of distribution is different from Rad9 and Hus1, which remain nuclear throughout the cell cycle, suggesting Leishmania Rad1 may regulate 9-1-1 activities and/or perform relevant functions outside the 9-1-1 complex.
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Affiliation(s)
- Elaine V Santos
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Jeziel D Damasceno
- The Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, UK
| | - Ricardo Obonaga
- Laboratório de Ciclo Celular, Instituto Butantan, São Paulo, SP, Brazil
| | - Roberta Rosales
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Jennifer A Black
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; The Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, UK
| | - Richard McCulloch
- The Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, UK
| | - Luiz R O Tosi
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil.
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2
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Sandler H, Shore N, Dearnaley D, Freedland S, Smith M, Rosales R, Brookman-May S, Dicker A, McKenzie M, Bossi A, Widmark A, Wiegel T, Martin J, Miladinovic B, Lefresne F, Ciprotti M, McCarthy S, Mundle S, Tombal B, Feng F. Challenges and Solutions during the COVID Pandemic for Patient Retention and Physician Engagement in the Phase 3 ATLAS Study of Apalutamide Added to Androgen Deprivation Therapy (ADT) in High-Risk Localized or Locally Advanced Prostate Cancer (HRLPC). Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1217] [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: 10/31/2022]
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3
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Pontelli MC, Castro IA, Martins RB, La Serra L, Veras FP, Nascimento DC, Silva CM, Cardoso RS, Rosales R, Gomes R, Lima TM, Souza JP, Vitti BC, Caetité DB, de Lima MHF, Stumpf SD, Thompson CE, Bloyet LM, Kawahisa JTE, Giannini MC, Bonjorno LP, Lopes MIF, Batah SS, Li S, Assad RL, Almeida SCL, Oliveira FR, Benatti MN, Pontes LLF, Santana RC, Vilar FC, Martins MA, Shi PY, Cunha TM, Calado RT, Alves-Filho JC, Zamboni DS, Fabro A, Louzada-Junior P, Oliveira RDR, Whelan SPJ, Cunha FQ, Arruda E. SARS-CoV-2 productively infects primary human immune system cells in vitro and in COVID-19 patients. J Mol Cell Biol 2022; 14:6572370. [PMID: 35451490 PMCID: PMC9384834 DOI: 10.1093/jmcb/mjac021] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [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: 06/18/2021] [Revised: 12/30/2021] [Accepted: 04/19/2022] [Indexed: 12/04/2022] Open
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is associated with a hyperinflammatory state and lymphocytopenia, a hallmark that appears as both signature and prognosis of disease severity outcome. Although cytokine storm and a sustained inflammatory state are commonly associated with immune cell depletion, it is still unclear whether direct SARS-CoV-2 infection of immune cells could also play a role in this scenario by harboring viral replication. We found that monocytes, as well as both B and T lymphocytes, were susceptible to SARS-CoV-2 infection in vitro, accumulating double-stranded RNA consistent with viral RNA replication and ultimately leading to expressive T cell apoptosis. In addition, flow cytometry and immunofluorescence analysis revealed that SARS-CoV-2 was frequently detected in monocytes and B lymphocytes from coronavirus disease 2019 (COVID-19) patients. The rates of SARS-CoV-2-infected monocytes in peripheral blood mononuclear cells from COVID-19 patients increased over time from symptom onset, with SARS-CoV-2-positive monocytes, B cells, and CD4+ T lymphocytes also detected in postmortem lung tissue. These results indicated that SARS-CoV-2 infection of blood-circulating leukocytes in COVID-19 patients might have important implications for disease pathogenesis and progression, immune dysfunction, and virus spread within the host.
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Affiliation(s)
- Marjorie C Pontelli
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Italo A Castro
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Ronaldo B Martins
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Leonardo La Serra
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Flávio P Veras
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Daniele C Nascimento
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Camila M Silva
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Ricardo S Cardoso
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Roberta Rosales
- Department of Cell and Molecular Biology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rogério Gomes
- Blood Center of Ribeirao Preto, 14049-900, Ribeirao Preto, São Paulo, Brazil
| | - Thais M Lima
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Juliano P Souza
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Brenda C Vitti
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Diego B Caetité
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Mikhael H F de Lima
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Spencer D Stumpf
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Cassandra E Thompson
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Louis-Marie Bloyet
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Juliana T E Kawahisa
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Marcela C Giannini
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Letícia P Bonjorno
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Maria I F Lopes
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Sabrina S Batah
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Siyuan Li
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rodrigo L Assad
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Sergio C L Almeida
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Fabiola R Oliveira
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Maíra N Benatti
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Lorena L F Pontes
- Blood Center of Ribeirao Preto, 14049-900, Ribeirao Preto, São Paulo, Brazil
| | - Rodrigo C Santana
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Fernando C Vilar
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Maria A Martins
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Pei-Yong Shi
- Department of Biochemistry & Molecular Biology, the University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Thiago M Cunha
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rodrigo T Calado
- Blood Center of Ribeirao Preto, 14049-900, Ribeirao Preto, São Paulo, Brazil
| | - José C Alves-Filho
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Dario S Zamboni
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Alexandre Fabro
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Paulo Louzada-Junior
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Rene D R Oliveira
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Divisions of Clinical Immunology, Infectious Diseases and Intensive Care Unit, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Sean P J Whelan
- Department of Molecular Microbiology, Washington University in St. Louis, Saint Louis, MO 63110, USA
| | - Fernando Q Cunha
- Center of Research in Inflammatory Diseases, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
| | - Eurico Arruda
- Virology Research Center, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirao Preto Medical School, University of Sao Paulo, 14049-900, Ribeirao Preto, Sao Paulo, Brazil
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4
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Veras FP, Pontelli MC, Silva CM, Toller-Kawahisa JE, de Lima M, Nascimento DC, Schneider AH, Caetité D, Tavares LA, Paiva IM, Rosales R, Colón D, Martins R, Castro IA, Almeida GM, Lopes MIF, Benatti MN, Bonjorno LP, Giannini MC, Luppino-Assad R, Almeida SL, Vilar F, Santana R, Bollela VR, Auxiliadora-Martins M, Borges M, Miranda CH, Pazin-Filho A, da Silva LLP, Cunha LD, Zamboni DS, Dal-Pizzol F, Leiria LO, Siyuan L, Batah S, Fabro A, Mauad T, Dolhnikoff M, Duarte-Neto A, Saldiva P, Cunha TM, Alves-Filho JC, Arruda E, Louzada-Junior P, Oliveira RD, Cunha FQ. SARS-CoV-2-triggered neutrophil extracellular traps mediate COVID-19 pathology. J Exp Med 2020. [PMID: 32926098 DOI: 10.1101/2020.06.08.20125823] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 05/09/2023] Open
Abstract
Severe COVID-19 patients develop acute respiratory distress syndrome that may progress to cytokine storm syndrome, organ dysfunction, and death. Considering that neutrophil extracellular traps (NETs) have been described as important mediators of tissue damage in inflammatory diseases, we investigated whether NETs would be involved in COVID-19 pathophysiology. A cohort of 32 hospitalized patients with a confirmed diagnosis of COVID-19 and healthy controls were enrolled. The concentration of NETs was augmented in plasma, tracheal aspirate, and lung autopsies tissues from COVID-19 patients, and their neutrophils released higher levels of NETs. Notably, we found that viable SARS-CoV-2 can directly induce the release of NETs by healthy neutrophils. Mechanistically, NETs triggered by SARS-CoV-2 depend on angiotensin-converting enzyme 2, serine protease, virus replication, and PAD-4. Finally, NETs released by SARS-CoV-2-activated neutrophils promote lung epithelial cell death in vitro. These results unravel a possible detrimental role of NETs in the pathophysiology of COVID-19. Therefore, the inhibition of NETs represents a potential therapeutic target for COVID-19.
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Affiliation(s)
- Flavio Protasio Veras
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marjorie Cornejo Pontelli
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Camila Meirelles Silva
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Juliana E Toller-Kawahisa
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Mikhael de Lima
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Daniele Carvalho Nascimento
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ayda Henriques Schneider
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Diego Caetité
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Lucas Alves Tavares
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Isadora M Paiva
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Roberta Rosales
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - David Colón
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ronaldo Martins
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Italo Araujo Castro
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Glaucia M Almeida
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maria Isabel Fernandes Lopes
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maíra Nilson Benatti
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Letícia Pastorelli Bonjorno
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marcela Cavichioli Giannini
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rodrigo Luppino-Assad
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Sérgio Luna Almeida
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernando Vilar
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rodrigo Santana
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Valdes R Bollela
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maria Auxiliadora-Martins
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marcos Borges
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Carlos Henrique Miranda
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Antônio Pazin-Filho
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Luis Lamberti P da Silva
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Larissa Dias Cunha
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Dario S Zamboni
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Felipe Dal-Pizzol
- Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Santa Catarina, Brazil
| | - Luiz O Leiria
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Li Siyuan
- Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Sabrina Batah
- Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre Fabro
- Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thais Mauad
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Marisa Dolhnikoff
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Amaro Duarte-Neto
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Paulo Saldiva
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Thiago Mattar Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - José Carlos Alves-Filho
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Eurico Arruda
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Paulo Louzada-Junior
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Renê Donizeti Oliveira
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernando Queiroz Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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5
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Moreno-Vedia J, Rosales R, Heras M, Plana N, Ibarretxe D, Girona J, Masana L. Effects of HDL triglyceride enrichment on reverse cholesterol transport in dyslipidemic patients. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.205] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Sy M, Rosales R. Development and Validation of Catastrophizing and Stigma Scale (CaStS) for Patients with X-Linked Dystonia Parkinsonism. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.383] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Nelson O, Turbov J, Rosales R, Thaete L, Cline M, Rodriguez G. Chemopreventive effect of progestin and vitamin D in the mogp-TAG ovarian cancer mouse model. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.153] [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: 10/23/2022]
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8
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Yu F, Alvarez J, Ribeiro R, Rosales R, Adamson M, Xin L, Gellner B, Meenakshi S, Chopra C, Wu J, Zhang Y, Rahmani A, Alie E, Rao V, Badiwala M. DIALYSIS IMPROVES MYOCARDIAL PRESERVATION DURING EX SITU HEART PERFUSION. Can J Cardiol 2020. [DOI: 10.1016/j.cjca.2020.07.224] [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: 10/23/2022] Open
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9
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Veras FP, Pontelli MC, Silva CM, Toller-Kawahisa JE, de Lima M, Nascimento DC, Schneider AH, Caetité D, Tavares LA, Paiva IM, Rosales R, Colón D, Martins R, Castro IA, Almeida GM, Lopes MIF, Benatti MN, Bonjorno LP, Giannini MC, Luppino-Assad R, Almeida SL, Vilar F, Santana R, Bollela VR, Auxiliadora-Martins M, Borges M, Miranda CH, Pazin-Filho A, da Silva LLP, Cunha LD, Zamboni DS, Dal-Pizzol F, Leiria LO, Siyuan L, Batah S, Fabro A, Mauad T, Dolhnikoff M, Duarte-Neto A, Saldiva P, Cunha TM, Alves-Filho JC, Arruda E, Louzada-Junior P, Oliveira RD, Cunha FQ. SARS-CoV-2-triggered neutrophil extracellular traps mediate COVID-19 pathology. J Exp Med 2020; 217:152086. [PMID: 32926098 PMCID: PMC7488868 DOI: 10.1084/jem.20201129] [Citation(s) in RCA: 569] [Impact Index Per Article: 142.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/11/2020] [Accepted: 08/31/2020] [Indexed: 02/06/2023] Open
Abstract
Severe COVID-19 patients develop acute respiratory distress syndrome that may progress to cytokine storm syndrome, organ dysfunction, and death. Considering that neutrophil extracellular traps (NETs) have been described as important mediators of tissue damage in inflammatory diseases, we investigated whether NETs would be involved in COVID-19 pathophysiology. A cohort of 32 hospitalized patients with a confirmed diagnosis of COVID-19 and healthy controls were enrolled. The concentration of NETs was augmented in plasma, tracheal aspirate, and lung autopsies tissues from COVID-19 patients, and their neutrophils released higher levels of NETs. Notably, we found that viable SARS-CoV-2 can directly induce the release of NETs by healthy neutrophils. Mechanistically, NETs triggered by SARS-CoV-2 depend on angiotensin-converting enzyme 2, serine protease, virus replication, and PAD-4. Finally, NETs released by SARS-CoV-2–activated neutrophils promote lung epithelial cell death in vitro. These results unravel a possible detrimental role of NETs in the pathophysiology of COVID-19. Therefore, the inhibition of NETs represents a potential therapeutic target for COVID-19.
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Affiliation(s)
- Flavio Protasio Veras
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marjorie Cornejo Pontelli
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Camila Meirelles Silva
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Juliana E Toller-Kawahisa
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Mikhael de Lima
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Daniele Carvalho Nascimento
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ayda Henriques Schneider
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Diego Caetité
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Lucas Alves Tavares
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Isadora M Paiva
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Roberta Rosales
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - David Colón
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ronaldo Martins
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Italo Araujo Castro
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Glaucia M Almeida
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maria Isabel Fernandes Lopes
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maíra Nilson Benatti
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Letícia Pastorelli Bonjorno
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marcela Cavichioli Giannini
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rodrigo Luppino-Assad
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Sérgio Luna Almeida
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernando Vilar
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rodrigo Santana
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Valdes R Bollela
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maria Auxiliadora-Martins
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Marcos Borges
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Carlos Henrique Miranda
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Antônio Pazin-Filho
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Luis Lamberti P da Silva
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Larissa Dias Cunha
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Dario S Zamboni
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Felipe Dal-Pizzol
- Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Santa Catarina, Brazil
| | - Luiz O Leiria
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Li Siyuan
- Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Sabrina Batah
- Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre Fabro
- Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thais Mauad
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Marisa Dolhnikoff
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Amaro Duarte-Neto
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Paulo Saldiva
- Department Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Thiago Mattar Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - José Carlos Alves-Filho
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Eurico Arruda
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Paulo Louzada-Junior
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Renê Donizeti Oliveira
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernando Queiroz Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Pontelli MC, Castro IA, Martins RB, Veras FP, Serra LL, Nascimento DC, Cardoso RS, Rosales R, Lima TM, Souza JP, Caetité DB, de Lima MHF, Kawahisa JT, Giannini MC, Bonjorno LP, Lopes MIF, Batah SS, Siyuan L, Assad RL, Almeida SCL, Oliveira FR, Benatti MN, Pontes LLF, Santana RC, Vilar FC, Martins MA, Cunha TM, Calado RT, Alves-Filho JC, Zamboni DS, Fabro A, Louzada-Junior P, Oliveira RDR, Cunha FQ, Arruda E. Infection of human lymphomononuclear cells by SARS-CoV-2. bioRxiv 2020. [PMID: 34013264 PMCID: PMC8132220 DOI: 10.1101/2020.07.28.225912] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Although SARS-CoV-2 severe infection is associated with a hyperinflammatory state, lymphopenia is an immunological hallmark, and correlates with poor prognosis in COVID-19. However, it remains unknown if circulating human lymphocytes and monocytes are susceptible to SARS-CoV-2 infection. In this study, SARS-CoV-2 infection of human peripheral blood mononuclear cells (PBMCs) was investigated both in vitro and in vivo . We found that in vitro infection of whole PBMCs from healthy donors was productive of virus progeny. Results revealed that monocytes, as well as B and T lymphocytes, are susceptible to SARS-CoV-2 active infection and viral replication was indicated by detection of double-stranded RNA. Moreover, flow cytometry and immunofluorescence analysis revealed that SARS-CoV-2 was frequently detected in monocytes and B lymphocytes from COVID-19 patients, and less frequently in CD4 + T lymphocytes. The rates of SARS-CoV-2-infected monocytes in PBMCs from COVID-19 patients increased over time from symptom onset. Additionally, SARS-CoV-2-positive monocytes and B and CD4+T lymphocytes were detected by immunohistochemistry in post mortem lung tissue. SARS-CoV-2 infection of blood circulating leukocytes in COVID-19 patients may have important implications for disease pathogenesis, immune dysfunction, and virus spread within the host.
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Pontelli MC, Castro IA, Martins RB, Veras FP, Serra LL, Nascimento DC, Cardoso RS, Rosales R, Lima TM, Souza JP, Caetité DB, de Lima MHF, Kawahisa JT, Giannini MC, Bonjorno LP, Lopes MIF, Batah SS, Siyuan L, Assad RL, Almeida SCL, Oliveira FR, Benatti MN, Pontes LLF, Santana RC, Vilar FC, Martins MA, Cunha TM, Calado RT, Alves-Filho JC, Zamboni DS, Fabro A, Louzada-Junior P, Oliveira RDR, Cunha FQ, Arruda E. Infection of human lymphomononuclear cells by SARS-CoV-2. bioRxiv 2020. [PMID: 34013264 DOI: 10.1101/2020.01.07.896506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Although SARS-CoV-2 severe infection is associated with a hyperinflammatory state, lymphopenia is an immunological hallmark, and correlates with poor prognosis in COVID-19. However, it remains unknown if circulating human lymphocytes and monocytes are susceptible to SARS-CoV-2 infection. In this study, SARS-CoV-2 infection of human peripheral blood mononuclear cells (PBMCs) was investigated both in vitro and in vivo . We found that in vitro infection of whole PBMCs from healthy donors was productive of virus progeny. Results revealed that monocytes, as well as B and T lymphocytes, are susceptible to SARS-CoV-2 active infection and viral replication was indicated by detection of double-stranded RNA. Moreover, flow cytometry and immunofluorescence analysis revealed that SARS-CoV-2 was frequently detected in monocytes and B lymphocytes from COVID-19 patients, and less frequently in CD4 + T lymphocytes. The rates of SARS-CoV-2-infected monocytes in PBMCs from COVID-19 patients increased over time from symptom onset. Additionally, SARS-CoV-2-positive monocytes and B and CD4+T lymphocytes were detected by immunohistochemistry in post mortem lung tissue. SARS-CoV-2 infection of blood circulating leukocytes in COVID-19 patients may have important implications for disease pathogenesis, immune dysfunction, and virus spread within the host.
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Suárez B, Barkin D, DeWalt B, Hernández M, Rosales R. The Nutritional Impact of Rural Modernization: Strategies for Smallholder Survival in Mexico. Food Nutr Bull 2018. [DOI: 10.1177/156482658700900314] [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: 11/15/2022]
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13
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Rosales R, Lastra A, Hernández L, Fernández A. Biología del transporte axonal y síndrome de doble compresión. Rev Iberoam Cir Mano 2018. [DOI: 10.1055/s-0038-1645874] [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] [Indexed: 10/16/2022] Open
Abstract
ResumenDespués de más de 40 años desde la descripción del Síndrome de Doble Compresión por Upton y McComas en el Lancet, sigue siendo un tema debatido que ha llevado a algunos cirujanos de mano a dudar de su existencia. La evidencia científica demuestra que la alteración del transporte axonal es el mecanismo más plausible en la fisiopatología de ese síndrome de compresión nerviosa. Se ha demostrado que una cuidadosa exploración clínica junto a un buen estudio neurofisiológico bien dirigido incrementa la eficiencia diagnóstica en términos de pacientes correctamente diagnosticados en el SDC. La liberación del Ligamento Transverso del Carpo está indicada en determinados pacientes que cumplen unos criterios de inclusión y exclusión específicos. Los resultados demuestran que la liberación del canal carpiano en esa población diana específica, es capaz de mejorar la gravedad de los síntomas de manera similar a la población afecta de Síndrome del Túnel Carpiano y de manera casi similar, a nivel de la Discapacidad de MMSS. Sólo instrumentos genéricos, como el SF-36, han sido capaces de detectar la diferencia a nivel de ciertas dimensiones de la Salud en relación a la Calidad de Vida entre los resultados del tratamiento en SDC y STC.
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Affiliation(s)
- R. Rosales
- Unidad de Cirugía de La Mano y Microcirugía, GECOT, La Laguna, Tenerife, España
| | - A. Lastra
- Unidad de Cirugía de La Mano y Microcirugía, GECOT, La Laguna, Tenerife, España
| | - L. Hernández
- Servicio Neurofisiología Hospital Universitario, Santa Cruz de Tenerife, España
| | - A. Fernández
- Unidad de Cirugía de La Mano y Microcirugía, GECOT, La Laguna, Tenerife, España
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Carvajal F, Rosales R, Palma F, Manzano S, Cañizares J, Jamilena M, Garrido D. Transcriptomic changes in Cucurbita pepo fruit after cold storage: differential response between two cultivars contrasting in chilling sensitivity. BMC Genomics 2018; 19:125. [PMID: 29415652 PMCID: PMC5804050 DOI: 10.1186/s12864-018-4500-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 08/01/2017] [Accepted: 01/28/2018] [Indexed: 11/18/2022] Open
Abstract
Background Zucchini fruit is susceptible to chilling injury (CI), but the response to low storage temperature is cultivar dependent. Previous reports about the response of zucchini fruit to chilling storage have been focused on the physiology and biochemistry of this process, with little information about the molecular mechanisms underlying it. In this work, we present a comprehensive analysis of transcriptomic changes that take place after cold storage in zucchini fruit of two commercial cultivars with contrasting response to chilling stress. Results RNA-Seq analysis was conducted in exocarp of fruit at harvest and after 14 days of storage at 4 and 20 °C. Differential expressed genes (DEGs) were obtained comparing fruit stored at 4 °C with their control at 20 °C, and then specific and common up and down-regulated DEGs of each cultivar were identified. Functional analysis of these DEGs identified similarities between the response of zucchini fruit to low temperature and other stresses, with an important number of GO terms related to biotic and abiotic stresses overrepresented in both cultivars. This study also revealed several molecular mechanisms that could be related to chilling tolerance, since they were up-regulated in cv. Natura (CI tolerant) or down-regulated in cv. Sinatra (CI sensitive). These mechanisms were mainly those related to carbohydrate and energy metabolism, transcription, signal transduction, and protein transport and degradation. Among DEGs belonging to these pathways, we selected candidate genes that could regulate or promote chilling tolerance in zucchini fruit including the transcription factors MYB76-like, ZAT10-like, DELLA protein GAIP, and AP2/ERF domain-containing protein. Conclusions This study provides a broader understanding of the important mechanisms and processes related to coping with low temperature stress in zucchini fruit and allowed the identification of some candidate genes that may be involved in the acquisition of chilling tolerance in this crop. These genes will be the basis of future studies aimed to identify markers involved in cold tolerance and aid in zucchini breeding programs. Electronic supplementary material The online version of this article (10.1186/s12864-018-4500-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- F Carvajal
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain
| | - R Rosales
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain
| | - F Palma
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain
| | - S Manzano
- Department of Biology and Geology, Agrifood Campus of International Excellence (CeiA3), CIAIMBITAL, University of Almería, La Cañada de San Urbano s/n, 04120, Almería, Spain
| | - J Cañizares
- Institute for the Conservation and Breeding of Agricultural Biodiversity (COMAV-UPV), Universitat Politécnica de Valencia, Camino de Vera s/n, 46022, Valencia, Spain
| | - M Jamilena
- Department of Biology and Geology, Agrifood Campus of International Excellence (CeiA3), CIAIMBITAL, University of Almería, La Cañada de San Urbano s/n, 04120, Almería, Spain
| | - D Garrido
- Department of Plant Physiology, Facultad de Ciencias, University of Granada, Fuentenueva s/n, 18071, Granada, Spain.
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16
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Dadgardoust P, Asuncion R, Rosales R. Effects of botulinum toxin a on the improvement of dystonia among patients with oromandibular dystonia: A meta-analysis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.636] [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: 11/26/2022]
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Conrads K, Bateman N, Litzi T, Turbov J, Thaete L, Rosales R, Rodriguez G, Hamilton C, Maxwell G, Conrads T. Identification of functional progesterone response elements in the CYP24A1 promoter. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.278] [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: 11/26/2022]
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18
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Tronnier VM, Domingo A, Moll CK, Rasche D, Mohr C, Rosales R, Capetian P, Jamora RD, Lee LV, Münchau A, Diesta CC, Tadic V, Klein C, Brüggemann N, Moser A. Biochemical mechanisms of pallidal deep brain stimulation in X-linked dystonia parkinsonism. Parkinsonism Relat Disord 2015; 21:954-9. [PMID: 26093890 DOI: 10.1016/j.parkreldis.2015.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 05/17/2015] [Accepted: 06/08/2015] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Invasive techniques such as in-vivo microdialysis provide the opportunity to directly assess neurotransmitter levels in subcortical brain areas. METHODS Five male Filipino patients (mean age 42.4, range 34-52 years) with severe X-linked dystonia-parkinsonism underwent bilateral implantation of deep brain leads into the internal part of the globus pallidus (GPi). Intraoperative microdialysis and measurement of gamma aminobutyric acid and glutamate was performed in the GPi in three patients and globus pallidus externus (GPe) in two patients at baseline for 25/30 min and during 25/30 min of high-frequency GPi stimulation. RESULTS While the gamma-aminobutyric acid concentration increased in the GPi during high frequency stimulation (231 ± 102% in comparison to baseline values), a decrease was observed in the GPe (22 ± 10%). Extracellular glutamate levels largely remained unchanged. CONCLUSIONS Pallidal microdialysis is a promising intraoperative monitoring tool to better understand pathophysiological implications in movement disorders and therapeutic mechanisms of high frequency stimulation. The increased inhibitory tone of GPi neurons and the subsequent thalamic inhibition could be one of the key mechanisms of GPi deep brain stimulation in dystonia. Such a mechanism may explain how competing (dystonic) movements can be suppressed in GPi/thalamic circuits in favour of desired motor programs.
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Affiliation(s)
- V M Tronnier
- Department of Neurosurgery, University of Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - A Domingo
- Institute of Neurogenetics, University of Lübeck, Maria-Goeppert-Straße 1, D-23562 Lübeck, Germany
| | - C K Moll
- Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, D-20246 Hamburg, Germany
| | - D Rasche
- Department of Neurosurgery, University of Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - C Mohr
- Department of Neuroradiology, University Hospital Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - R Rosales
- XDP Study Group, Philippine Children's Medical Center, Quezon City, Philippines; Department of Neurology and Psychiatry, Faculty of Medicine and Surgery, University of Santo Tomas, Manila, Philippines
| | - P Capetian
- Institute of Neurogenetics, University of Lübeck, Maria-Goeppert-Straße 1, D-23562 Lübeck, Germany; Department of Neurology, University Hospital Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - R D Jamora
- XDP Study Group, Philippine Children's Medical Center, Quezon City, Philippines; Department of Neurosciences, College of Medicine-Philippine General Hospital, University of the Philippines Manila, Manila, Philippines
| | - L V Lee
- XDP Study Group, Philippine Children's Medical Center, Quezon City, Philippines
| | - A Münchau
- Institute of Neurogenetics, University of Lübeck, Maria-Goeppert-Straße 1, D-23562 Lübeck, Germany
| | - C C Diesta
- XDP Study Group, Philippine Children's Medical Center, Quezon City, Philippines
| | - V Tadic
- Institute of Neurogenetics, University of Lübeck, Maria-Goeppert-Straße 1, D-23562 Lübeck, Germany
| | - C Klein
- Institute of Neurogenetics, University of Lübeck, Maria-Goeppert-Straße 1, D-23562 Lübeck, Germany
| | - N Brüggemann
- Institute of Neurogenetics, University of Lübeck, Maria-Goeppert-Straße 1, D-23562 Lübeck, Germany; Department of Neurology, University Hospital Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - A Moser
- Department of Neurology, University Hospital Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany
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Rosales R, Abou Jaoude E, Al-Arouj M, Fawwad A, Orabi A, Shah P, DiTommaso S, Vaz J, Latif ZA. Clinical effectiveness and safety of vildagliptin in >19 000 patients with type 2 diabetes: the GUARD study. Diabetes Obes Metab 2015; 17:603-607. [PMID: 25586779 DOI: 10.1111/dom.12436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 12/01/2014] [Accepted: 12/31/2014] [Indexed: 11/29/2022]
Abstract
The present GUARD study was a prospective, non-interventional study evaluating the clinical effectiveness, safety and tolerability of vildagliptin with or without metformin in adult patients with type 2 diabetes mellitus (T2DM) studied in routine clinical practice. Patients were enrolled from countries across four geographical regions. The primary endpoint was change in glycated haemoglobin (HbA1c) concentration from baseline after 24 weeks of treatment with vildagliptin with or without metformin. Of 19 331 patients analysed, 3511 received vildagliptin and 15 820 received vildagliptin plus metformin. At week 24, the mean HbA1c was reduced significantly from baseline by -1.27% (vildagliptin: -1.17%; vildagliptin plus metformin: -1.29%; p < 0.0001). Significant reductions in HbA1c from baseline were consistently reported regardless of patient age, body mass index (BMI) or baseline HbA1c. Weight and BMI were also significantly reduced from baseline. Vildagliptin treatment with or without metformin was generally well tolerated. It provided clinically relevant glycaemic and weight control, and was well tolerated in a large multi-ethnic population of patients with T2DM studied in routine clinical practice.
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Affiliation(s)
- R Rosales
- St. Luke's Medical Center, Quezon City, Philippines
| | - E Abou Jaoude
- Department of Medicine, Middle East Institute of Health, Bsalim, Lebanon
| | - M Al-Arouj
- Dasman Diabetes Institute, Dasman, Kuwait
| | - A Fawwad
- Baqai Institute of Diabetology & Endocrinology, Baqai Medical University, Karachi, Pakistan
| | - A Orabi
- Faculty of Medicine, Zagazig University, Zagazig-Sharkia, Egypt
| | - P Shah
- Gujarat Endocrine Centre, Ahmedabad, India
| | | | - J Vaz
- Novartis Healthcare Pvt. Ltd., Hyderabad, India
| | - Z A Latif
- Ibrahim Memorial Diabetes Centre, BIRDEM Hospital, Dhaka, Bangladesh
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Rodriguez G, Turbov J, Rosales R, Syed V, Conrads T, Darcy K, Maxwell G, Hamilton C, Thaete L. Progestins inhibit calcitriol-induced CYP24A1 in endometrial and ovarian cancer cells. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.01.151] [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: 11/16/2022]
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Rosales R, González VJ, Pollwein ME, Reboso-Morales L, Hidalgo Y. Nivel de evidencia de la RICMA comparada con el JHSE y JHSA. Rev Iberoam Cir Mano 2014. [DOI: 10.1055/s-0037-1607107] [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] [Indexed: 10/18/2022] Open
Abstract
Objetivo: El propósito del presente trabajo fue evaluar el nivel de evidencia científica de artículos de investigación clínica publicados en las Revista Ineroamericana de Cirugía de la Mano (RICMA) y compararlo con las revistas Europea (JHSE) y Americana (JHSA).Material y método: Un total de 932 trabajos de investigación clínicos publicados entre 2005 y 2009 (RICMA 60, JHSE, JHSA 461 y 411) fueron revisados. Dos observadores independientes clasificaron el nivel de evidencia basado en la Clasificación Internacional de Oxford, siendo 5 el nivel más bajo y 1 el nivel más alto de evidencia científica. Las frecuencias observadas de nivel de evidencia para cada revista científica fueron comparadas con las frecuencias esperadas mediante un test de chi- cuadrado (X2) para variables categóricas con un nivel de significancia del 0.05.Resultados: Más del 80% de los trabajos publicados en la RICMA y el JHSE , y el 67.6% en el JHSA presentaron un nivel IV de evidencia. Trabajos de nivel I o II no fueron publicados en la RICMA, comparado con el JHSE (0.9% nivel I, 5% nivel II), y con el JHSA (8.3% nivel I, 10% nivel II). El porcentaje de artículos con nivel III publicados en la RICMA (16,7%) fue mayor al observado en el JHSE (11.1%) y en el JHSA (14.1%). Todos los resultados fueron estadísticamente significativos (X2=63.95; p<0.001).Conclusiones: El nivel de evidencia de las publicaciones en investigación clínica en cirugía de la mano depende del tipo de revista, siendo el mayor nivel de evidencia en aquellos trabajos publicados en el JHSA, seguido del JHSE y finalmente la RICMA.
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Affiliation(s)
- R. Rosales
- Unidad de Cirugía de la Mano y Microcirugía, GECOT, San Cristóbal de La Laguna, Tenerife, España
| | | | | | - L. Reboso-Morales
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario de Nuestra Señora de Candelaria HUNSC. Universidad de La Laguna. San Cristóbal de La Laguna, Tenerife, España
| | - Y. Hidalgo
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario de Nuestra Señora de Candelaria HUNSC. Universidad de La Laguna. San Cristóbal de La Laguna, Tenerife, España
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Rosales R, Pollwein ME, González VJ, Lorenzo CJ, González RN, Dorta A. Bases biológicas y mecánicas del tratamiento ortésico en la patología de la mano. Teoría del control de la cicatrización de Kleinert. Rev Iberoam Cir Mano 2014. [DOI: 10.1055/s-0037-1607102] [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] [Indexed: 10/18/2022] Open
Abstract
El propósito del presente trabajo es presentar la evolución histórica del uso del tratamiento ortésico en la patología de la mano, introducir la figura de Harold E Kleinert y su tratamiento primario de las lesiones de los tendones flexores en la zona II de la mano como principio de la “Teoría del Control de la Cicatrización” que sienta las bases biológicas y biomecánicas del tratamiento y fisioterapia postoperatoria de las patologías más frecuentes de la mano: fracturas, mano catastrófica, mano extrínseca post-traumática, mano reumática, etc.
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Affiliation(s)
- R. Rosales
- Unidad de Cirugía de la Mano y Microcirugía, GECOT, San Cristobal de La Laguna, Tenerife. España
| | | | | | | | - R. N. González
- Fisioterapia Integral S.L., San Cristóbal de La Laguna, Tenerife. España
| | - A. Dorta
- Unidad de Cirugía de la Mano y Microcirugía, GECOT, San Cristobal de La Laguna, Tenerife. España
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Carvajal F, Garrido D, Jamilena M, Rosales R. Cloning and characterisation of a putative pollen-specific polygalacturonase gene (CpPG1) differentially regulated during pollen development in zucchini (Cucurbita pepo L.). Plant Biol (Stuttg) 2014; 16:457-466. [PMID: 23879260 DOI: 10.1111/plb.12070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 04/11/2013] [Accepted: 06/06/2013] [Indexed: 06/02/2023]
Abstract
Studies in zucchini (Cucurbita pepo L. spp. pepo) pollen have been limited to the viability and morphology of the mature pollen grain. The enzyme polygalacturonase (PG) is involved in pollen development and pollination in many species. In this work, we study anther and pollen development of C. pepo and present the cloning and characterisation of a putative PG CpPG1 (Accession no. HQ232488) from pollen cDNA in C. pepo. The predicted protein for CpPG1 has 416 amino acids, with a high homology to other pollen PGs, such as P22 from Oenothera organensis (76%) and PGA3 from Arabidopsis thaliana (73%). CpPG1 belongs to clade C, which comprises PGs expressed in pollen, and presents a 34 amino acid signal peptide for secretion towards the cell wall. DNA-blot analysis revealed that there are at least another two genes that code for PGs in C. pepo. The spatial and temporal accumulation of CpPG1 was studied by semi-quantitative- and qRT-PCR. In addition, mRNA was detected only in anthers, pollen and the rudimentary anthers of bisexual flowers (only present in some zucchini cultivars under certain environmental conditions that trigger anther development in the third whorl of female flowers). However, no expression was detected in cotyledons, stem or fruit. Furthermore, CpPG1 mRNA was accumulated throughout anther development, with the highest expression found in mature pollen. Similarly, exo-PG activity increased from immature anther stages to mature anthers and mature pollen. Overall, these data support the pollen specificity of this gene and suggest an involvement of CpPG1 in pollen development in C. pepo.
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Affiliation(s)
- F Carvajal
- Departamento de Fisiología Vegetal, Facultad de Ciencias, Universidad de Granada, Granada, Spain
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Calò C, Schmeckebier H, Merghem K, Rosales R, Lelarge F, Martinez A, Bimberg D, Ramdane A. Frequency resolved optical gating characterization of sub-ps pulses from single-section InAs/InP quantum dash based mode-locked lasers. Opt Express 2014; 22:1742-1748. [PMID: 24515181 DOI: 10.1364/oe.22.001742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Mode-locking of single-section Fabry-Pérot InAs/InP edge emitting quantum dash based lasers at 1.56 µm under continuous wave operation is studied by second-harmonic generation frequency resolved optical gating. Self-starting pulses of a width down to 374 fs can be observed after external chirp compensation using standard single-mode fiber (SMF-28). Pulse compression using different lengths of SMF-28 and pulse shape as well as phase dependence on bias conditions are investigated. Consistency with stepped-heterodyne technique for advanced pulse characterization is shown.
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Guardiola M, Alvaro A, Vallvé JC, Rosales R, Solà R, Girona J, Serra N, Duran P, Esteve E, Masana L, Ribalta J. APOA5 gene expression in the human intestinal tissue and its response to in vitro exposure to fatty acid and fibrate. Nutr Metab Cardiovasc Dis 2012; 22:756-762. [PMID: 21489765 DOI: 10.1016/j.numecd.2010.12.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [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: 03/19/2010] [Revised: 10/05/2010] [Accepted: 12/11/2010] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND AIMS APOA5, a key gene regulating triglyceride (TG) levels, is reported to be expressed exclusively in the liver where it may regulate TG-rich particle synthesis and secretion. Since the same lipoprotein processing occurs in the intestine, we have postulated that this organ would also express APOA5. METHODS AND RESULTS We have detected the APOA5 gene expression in C57BL/6J mouse and in human small intestine samples. In humans, it is expressed mainly in the duodenum and colon, with messenger RNA (mRNA) levels four orders of magnitude lower than in the liver, and the protein product being one-sixth of the liver equivalent. Subsequently, we carried out in vitro experiments in TC-7/CaCo(2) human intestinal cells to analyse the expression of APOA5, APOC3, APOB and MTP genes after the incubation with long- and short-chain fatty acids, and a peroxisome proliferator-activated receptor alpha (PPARα) agonist (Wy 14643, a fibrate therapeutic agent). In the TC-7 cell line, APOA5 expression was significantly upregulated by saturated fatty acids. The short-chain fatty acid butyrate increased APOA5 expression almost fourfold while APOB was downregulated by increasing butyrate concentrations. When TC-7 cells were incubated with PPARα agonist, the APOA5 expression was increased by 60%, while the expression of APOB, MTP and APOC3 was decreased by 50%, 30% and 45%, respectively. CONCLUSION Our results demonstrate that APOA5 is expressed in the intestine, albeit at a much lower concentration than in the liver. While it remains to be determined whether intestinal apo A-V is functional, our in vitro experiments show that its expression is modifiable by dietary and pharmacological stimuli.
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Affiliation(s)
- M Guardiola
- Unitat de Recerca en Lípids i Arteriosclerosi, Institut d'Investigacions Sanitàries Pere, Virgili, Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas, Universitat Rovira i Virgili, Reus, Spain
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Flatmark K, Borgen E, Nesland JM, Rasmussen H, Johannessen HO, Bukholm I, Rosales R, Hårklau L, Jacobsen HJ, Sandstad B, Boye K, Fodstad Ø. Disseminated tumour cells as a prognostic biomarker in colorectal cancer. Br J Cancer 2011; 104:1434-9. [PMID: 21448171 PMCID: PMC3101945 DOI: 10.1038/bjc.2011.97] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The study was performed to determine detection rate and prognostic relevance of disseminated tumour cells (DTC) in patients receiving curatively intended surgery for colorectal cancer (CRC). METHODS The study population consisted of 235 patients with CRC prospectively recruited from five hospitals in the Oslo region. Bone marrow (BM) aspirates were collected at the time of surgery and the presence of DTC was determined by two immunological methods; immunomagnetic selection (using an anti-EpCAM antibody) and immunocytochemistry (using a pan-cytokeratin antibody). Associations between the presence of DTC and metastasis-free, disease-specific and overall survival were analysed using univariate and multivariate methods. RESULTS Disseminated tumour cells were detected in 41 (17%) and 28 (12%) of the 235 examined BM samples by immunomagnetic selection and immunocytochemistry, respectively, with only five samples being positive with both methods. The presence of DTC was associated with adverse outcome (metastasis-free, disease-specific and overall survival) in univariate and multivariate analyses. CONCLUSION The presence of DTC was associated with adverse prognosis in this cohort of patients curatively resected for CRC, suggesting that DTC detection still holds promise as a biomarker in CRC.
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Affiliation(s)
- K Flatmark
- Department of Tumor Biology, Norwegian Radium Hospital, Oslo University Hospital, Oslo 0424, Norway.
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Marin J, Castano B, Blazquez A, Rosales R, Efferth T, Monte M. Strategies for Overcoming Chemotherapy Resistance in Enterohepatic Tumours. Curr Mol Med 2010; 10:467-85. [DOI: 10.2174/156652410791608261] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Accepted: 09/24/2009] [Indexed: 11/22/2022]
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Jouni ZE, Waworuntu R, Vangari G, Slightom R, Rosales R, Ferguson P, Rai G, Ruiz‐Palacio G, Guerrero M, Morrow A, McMahon R. Concentration of transforming growth factor‐beta in an infant formula from five countries and human milk from Mexico and the US. FASEB J 2009. [DOI: 10.1096/fasebj.23.1_supplement.lb494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | - P. Ferguson
- Medical AffairMead Johnson NutritionEvansvilleIN
| | | | - G. Ruiz‐Palacio
- National Institute of Medical Sciences and NutritionMexicoMexico
| | - M. Guerrero
- National Institute of Medical Sciences and NutritionMexicoMexico
| | - A. Morrow
- Division of Biostatistics and EpidemiologyCincinnati Children's Hospital Medical CenterCincinnatiOH
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Serra N, Alvaro A, Rosales R, Masana L, Vallve J. EFFECTS OF SIMVASTATIN ON THE EXPRESSION OF FIBULINS AND METALLOPROTEINASES IN HUMAN CORONARY ARTERY SMOOTH MUSCLE CELLS. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70789-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: 10/22/2022]
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Guardiola M, Alvaro A, Vallve J, Girona J, Rosales R, Sola R, Masana L, Ribalta J. INTESTINAL APOLIPOPROTEIN A5 EXPRESSION INVERSELY CORRELATES WITH THAT OF GENES NEEDED IN LIPOPROTEIN ASSEMBLY (MTP & APOB). ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70028-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: 11/16/2022]
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Guardiola M, Alvaro A, Vallve J, Girona J, Rosales R, Masana L, Ribalta J. PO7-182 APOLIPOPROTEIN A5 IS EXPRESSED IN HUMAN SMALL INTESTINE AND IS UPREGULATED BY FIBRATES. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71192-3] [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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García-Hernández E, González-Sánchez JL, Andrade-Manzano A, Contreras ML, Padilla S, Guzmán CC, Jiménez R, Reyes L, Morosoli G, Verde ML, Rosales R. Regression of papilloma high-grade lesions (CIN 2 and CIN 3) is stimulated by therapeutic vaccination with MVA E2 recombinant vaccine. Cancer Gene Ther 2006; 13:592-7. [PMID: 16456551 DOI: 10.1038/sj.cgt.7700937] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.7] [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: 11/09/2022]
Abstract
Human papillomavirus (HPV) is the etiologic agent for cervical cancer. In Mexico, a women dies every 2 h, and since 1990 the statistics have shown that the numbers of deaths are increasing. We conducted a phase II clinical trial to evaluate the potential use of the MVA E2 recombinant vaccinia virus in treating high-grade lesions (CIN 2 and CIN 3) associated with oncogenic papillomavirus. Fifty-four female patients with high degree lesions were treated either with an MVA E2 therapeutic vaccine or with conization. Thirty-four women received the therapeutic vaccine, at a total of 10(7) virus particles per dose injected directly into the uterus once every week over a 6-week period. Twenty control patients were treated with conization. By colposcopy, 19 patients out of 34 showed no lesion, in three patients the lesions were reduced by 85-90%, in eight other lesions had reduced by 60%, and in four more patients, they were reduced by 25%. Histological analysis showed total elimination of high-grade lesions in 20 out of 34 patients after treatment with MVA E2. Eleven patients had a 50% reduction in lesion size. In two other patients, the lesion was reduced to CIN 2 and in one more patient the lesion was reduced to low grade (CIN 1). All patients developed antibodies against the MVA E2 vaccine, and generated a specific cytotoxic response against papilloma-transformed cells. DNA viral load was significantly reduced in MVA E2-treated patients. Conization eliminated the lesions in 80% of the patients, but patients did not develop cytotoxic activity specific against cancer cells and did not eliminate the papillomavirus. In addition, three patients treated with conization had recurrence of lesions 1 year later. These results show that therapeutic vaccination with MVA E2 proved to be very effective in stimulating the immune system against papillomavirus, and in generating regression of high-grade lesion.
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Affiliation(s)
- E García-Hernández
- Hospital de Gineco Obstetricia, Instituto Mexicano del Seguro Social (IMSS), and FES Zaragoza, National Autonomous University of México, Mexico City, Mexico
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Catalá S, Sachetto C, Moreno M, Rosales R, Salazar-Schetrino PM, Gorla D. Antennal phenotype of Triatoma dimidiata populations and its relationship with species of phyllosoma and protracta complexes. J Med Entomol 2005; 42:719-25. [PMID: 16363154 DOI: 10.1093/jmedent/42.5.719] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Triatoma dimidiata (Latreille 1811) Reduviidae Triatominae is the main vector of Chagas disease in several countries of Latin America. As for other vector species, the characterization of T. dimidiata subpopulations within particular geographical regions or occupying different habitats could help in better planning of vector control actions. A first objective in this study was to evaluate the antennal phenotype as a phenetic marker to characterize populations of T. dimidiata collected in different geographic areas and domestic and sylvatic habitats. A second objective was to evaluate the phenetic relationships of T. dimidiata with other species of the phyllosoma complex: longipennis, pallidipennis, and phyllosoma. The antennal sensilla of T. dimidiata specimens collected in Mexico, Central America, and Colombia were analyzed and compared with the antennal sensilla of T. longipennis, T. pallidipennis, and T. phyllosoma. T. barberi was used as an outgroup in the analysis. For each specimen, the ventral side of the three distal segments of the antennae was drawn, identifying and counting four types of sensilla. In T. dimidiata, univariate and multivariate analysis showed differences between sexes, among populations collected in different habitats within the same region, and among populations collected in different geographic regions. Two types of antennal sensilla showed a latitudinal variation. Domestic specimens showed intermediate characteristics of the antennal phenotype, between sylvatic cave- and sylvatic forest-collected specimens. The antennal phenotypes show high similarities among T. pallidipennis, T. phyllosoma, and T. longipennis, with a better differentiation of T. pallidipennis. T. dimidiata is separated from the other members of the complex by a similar distance to T. barberi, of the protracta complex.
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Affiliation(s)
- S Catalá
- Centro Regional de Investigaciones Científicas y Transferencia Tecnológica (CRILAR), Anillaco-La Rioja, Argentina
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Cuellar Ponce de Leon L, Rosales R, Rosenthal∗ V. Prospective Study To Evaluate Mechanical Ventilator-Associated Pneumonia Rate in Intensive Care Units in a Peruvian Public Hospital: Benchmark with NNIS American Rates. Am J Infect Control 2004. [DOI: 10.1016/j.ajic.2004.04.169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Vallvé J, Uliaque K, Girona J, Cabre A, Ribalta J, Rosales R, Masana L. W10.268 Unsaturated fatty acids modulate ABCA1 gene expression in human THP-1 macrophages. ATHEROSCLEROSIS SUPP 2004. [DOI: 10.1016/s1567-5688(04)90267-5] [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: 11/28/2022]
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Abstract
Toxoplasma gondii is the aetiological agent of toxoplasmosis and is the most frequent and best known of the parasitic diseases. In the United States, a serological survey from the Third National Health and Nutrition Examination Survey found that an estimated 23% of adolescents and adults have laboratory evidence of infection with T. gondii. Although toxoplasmosis is asymptomatic or shows self-limited symptoms in adults, in pregnant women infections can cause severe health problems to the fetus if the parasites are transmitted. Also, in immunodeficient patients, chronic infection with T. gondii can reactivate and produce encephalitis, which is frequently lethal. In addition, in veterinary medicine, T. gondii infection is of economic importance due to abortion and neonatal loss in sheep and goats. Recently, the development of vaccines against toxoplasmosis has progressed considerably. The live attenuated S48 strain of Toxoplasma has been broadly used for veterinary purposes. DNA vaccines containing the full-length of SAG1/P30, ROP2 or ROP1 genes have proved to be a promising candidate to induce protection against toxoplasmosis. Viral vectors have proved to be the best candidates for vaccination in different diseases. A recombinant Herpes virus carrying the ROP2 gene is able to induce protective immunity in cats. In the present work we describe the potential of the MVA ROP2 recombinant vaccinia virus as a vaccine against toxoplasmosis. MVA ROP2 induces antibodies against the ROP2 protein in similar amount and types as the thermo-sensible strain ts-4 of T. gondii, which is able to fully protect mice against challenge with the virulent RH strain of T. gondii. Also, the life-span of mice is increased in MVA ROP2 vaccinated animals. We conclude that MVA ROP2 vaccine can possibly generate an immune response, which could be useful in protection against toxoplasmosis.
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Affiliation(s)
- J L Roque-Reséndiz
- Department of Immunology, Instituto de Investigaciones Biomédicas, National Autonomous University of Mexico, Ciudad Universitaria, Mexico 04510, Mexico, DF
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37
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Paz-Bailey G, Monroy C, Rodas A, Rosales R, Tabaru R, Davies C, Lines J. Incidence of Trypanosoma cruzi infection in two Guatemalan communities. Trans R Soc Trop Med Hyg 2002; 96:48-52. [PMID: 11925991 DOI: 10.1016/s0035-9203(02)90236-1] [Citation(s) in RCA: 25] [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: 10/26/2022] Open
Abstract
The prevalence of human infection by Trypanosoma cruzi was assessed using an enzyme-linked immunosorbent assay (ELISA) in a serological survey in 1998 of 2 rural communities (SMH and PS) in Guatemala. In SMH (Department of Zacapa), where Rhodnius prolixus was the principal vector, the seroprevalence amongst 373 people tested was 38.8%. In PS (Department of Santa Rosa), where the main vector was Triatoma dimidiata, 8.9% of the 428 people tested were seropositive. The overall prevalence of seropositivity was higher in females than in males in both SMH (40% vs 36%) and PS (11.9% vs 4.9%), although this difference was significant only in PS. Historical seroconversion rates, estimated retrospectively by fitting a transmission model to the age-prevalence curves, were 3.8% per year in SMH and 0.5% per year in PS. There was some indication of a recent reduction in incidence in both villages. In PS, but not in SMH, both the observed prevalence and the estimated incidence rates were significantly higher in females than in males.
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Affiliation(s)
- G Paz-Bailey
- University of San Carlos of Guatemala, Zone 12, Guatemala City, Guatemala.
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38
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Rosales R, López-Contreras M, Cortes RR. Antibodies against human papillomavirus (HPV) type 16 and 18 E2, E6 and E7 proteins in sera: correlation with presence of papillomavirus DNA. J Med Virol 2001; 65:736-44. [PMID: 11745939 DOI: 10.1002/jmv.2098] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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: 11/08/2022]
Abstract
Human papillomavirus (HPV) infection is associated with cervical cancer. The E2 and E1 papillomavirus proteins are expressed at the early stage of infection and regulate DNA replication. The E2 protein activates and represses transcription from different HPVs promoters. At some stage when viral DNA gets integrated into the cellular genome, the E2 gene is disrupted or inactivated. This event leads to a derepression of the E6 and E7 viral oncogenes. These viral proteins are required normally for the maintenance of the malignant phenotype. Therefore, the E2, E6, and E7 proteins are present in all patients infected by papillomavirus. In this study, the association of antibody levels against E2, E6, and E7 proteins of HPV types 16, 18, and 6 was determined in relation to the presence of HPV DNA at the initial stages of HPV infection. Serum samples from 172 women with HPV infection, determined by Papanicolau (Pap) smears and colposcopy, were tested. Elevated antibody titers against E2 protein from the HPV 6 and HPV 16 were detected in 46.42 and 66.96% of the patients, respectively. Antibodies against the E7 and E6 proteins of HPV 16 were found in 51.78 and 36.60% of the patients, respectively. Antibodies against the E6 and E7 proteins of HPV 18 were 35 and 45%, respectively. A statistical difference was found for antibody titers against the E2, E6, and E7 proteins between patients with papillomavirus DNA and controls cases who had no cytological abnormalities and no HPV DNA. Sera titers were 1/500 for patients HPV positive and 1/50 for control individuals. Antibodies titers against E6 and E7 proteins were also examined in patients at 6 and 24 months after cryosurgery. In these patients, a slight decrease in the antibody level against the E2, E6, and E7 proteins was found. No correlation was found between age and number of sexual partners, with serum positivity to the E2, E6, and E7 papillomavirus proteins. These data suggest that antibodies against the E2, E6, and E7 proteins are good candidates for use as markers for monitoring cervical HPV infections.
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Affiliation(s)
- R Rosales
- Department of Molecular Biology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.
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39
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Dorn PL, Flores J, Brahney B, Gutierrez A, Rosales R, Rodas A, Monroy C. Comparison of polymerase chain reaction on fresh tissue samples and fecal drops on filter paper for detection of Trypanosoma cruzi in Rhodnius prolixus. Mem Inst Oswaldo Cruz 2001; 96:503-5. [PMID: 11391422 DOI: 10.1590/s0074-02762001000400010] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
PCR detection of Trypanosoma cruzi in Rhodnius prolixus using fresh tissue or fecal drops on filter paper showed comparable results: 38.7% infection rate using the fresh tissue sample and 37.9% by dried fecal drop.
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Affiliation(s)
- P L Dorn
- Department of Biological Sciences, Loyola University, New Orleans, LA, USA.
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40
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Abstract
Hidden Markov models have been used to restore recorded signals of single ion channels buried in background noise. Parameter estimation and signal restoration are usually carried out through likelihood maximization by using variants of the Baum-Welch forward-backward procedures. This paper presents an alternative approach for dealing with this inferential task. The inferences are made by using a combination of the framework provided by Bayesian statistics and numerical methods based on Markov chain Monte Carlo stochastic simulation. The reliability of this approach is tested by using synthetic signals of known characteristics. The expectations of the model parameters estimated here are close to those calculated using the Baum-Welch algorithm, but the present methods also yield estimates of their errors. Comparisons of the results of the Bayesian Markov Chain Monte Carlo approach with those obtained by filtering and thresholding demonstrate clearly the superiority of the new methods.
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Affiliation(s)
- R Rosales
- Pharmacology, University of Cambridge, Cambridge CB2 1QJ, United Kingdom.
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41
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Gordon AN, Granai CO, Rose PG, Hainsworth J, Lopez A, Weissman C, Rosales R, Sharpington T. Phase II study of liposomal doxorubicin in platinum- and paclitaxel-refractory epithelial ovarian cancer. J Clin Oncol 2000; 18:3093-100. [PMID: 10963637 DOI: 10.1200/jco.2000.18.17.3093] [Citation(s) in RCA: 262] [Impact Index Per Article: 10.9] [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: 11/20/2022] Open
Abstract
PURPOSE Stealth liposomal doxorubicin (Alzal Corp, Palo Alto, CA) has a slower clearance rate than free doxorubicin, resulting in sustained serum levels. Liposomal encapsulation also leads to increased concentration of drug in tumor tissue. Meta-analysis of previous studies has shown that doxorubicin has activity in epithelial ovarian cancer. The current study was developed to examine the activity of Stealth liposomal doxorubicin in platinum- and paclitaxel-refractory ovarian cancer. PATIENTS AND METHODS Patients had epithelial ovarian cancer that either progressed on or recurred within 6 months of completion of platinum and paclitaxel chemotherapy. All patients had measurable disease. Stealth liposomal doxorubicin was administered at 50 mg/m(2) every 4 weeks as a 1-hour infusion. RESULTS Eighty-nine patients were treated and included in an intent-to-treat analysis. There were 82 patients who were platinum and paclitaxel refractory and met all study criteria. There was one complete response and 14 partial responses, for a total response rate of 16.9% (95% confidence interval [CI], 9.1% to 24.6%). For platinum- and paclitaxel-refractory patients, the response rate was 18.3% (95% CI, 9.9% to 26.7%). Median time to progression was 19. 3 weeks for the entire population. Ten patients (11.2%) withdrew because of adverse events related to the drug (palmar-plantar erythrodysesthesia [PPE], n = 3; asthenia, n = 2; cardiac, n = 2; neutropenia, n = 1; stomatitis, n = 1; and edema, n = 1). There were no drug-related fatal events. There were only eight grade 4 adverse events attributable to the drug. Stomatitis, PPE, and skin lesions were managed with dose reductions and delays in most cases. CONCLUSION Stealth liposomal doxorubicin has activity in refractory epithelial ovarian cancer. PPE and stomatitis can usually be managed by dose adjustment. The ease of administration makes this an attractive agent.
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Affiliation(s)
- A N Gordon
- Physicians Reliance Network, Dallas, TX, USA.
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42
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Valdez Graham V, Sutter G, José MV, García-Carranca A, Erfle V, Moreno Mendoza N, Merchant H, Rosales R. Human tumor growth is inhibited by a vaccinia virus carrying the E2 gene of bovine papillomavirus. Cancer 2000; 88:1650-62. [PMID: 10738224 DOI: 10.1002/(sici)1097-0142(20000401)88:7<1650::aid-cncr20>3.0.co;2-l] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [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: 11/10/2022]
Abstract
BACKGROUND Papillomavirus is the etiologic agent associated with cervical carcinoma. The papilloma E2 protein is able to regulate negatively the expression of E6 and E7 papilloma oncoproteins. Therefore, a new, highly attenuated vaccinia virus known as modified vaccinia virus Ankara (MVA), which carries the papillomavirus E2 gene, was used for the treatment of tumors associated with human papillomavirus. METHODS Analysis of expression of the E2 gene from the recombinant vaccinia virus was performed by reverse transcription-polymerase chain reaction of RNA isolated from infected cells. Detection of the E2 protein was done by immunoprecipitation from proteins labeled with [(35)S]-methionine, isolated from infected cells. The therapeutic effect of the MVA E2 recombinant virus over human tumors was tested in nude mice bearing tumors generated by inoculation of HeLa cells. Series of 10 nude mice with tumors of different sizes were injected with MVA, MVA E2, or phosphate-buffered saline. Tumor size was monitored every week to assess growth. RESULTS The MVA E2 recombinant virus efficiently expressed the E2 protein in BS-C-1 cells. This protein was able to repress, in vivo, the papillomavirus P105 promoter, which controls the expression of the E6 and E7 oncoproteins. In nude mice the MVA E2 virus reduced tumor growth very efficiently. In contrast, tumors continued to grow in mice treated with MVA or PBS. The life expectancy of MVA E2-treated mice was also increased three- to fourfold compared with that of animals that received MVA or PBS. CONCLUSIONS The growth of human tumors was efficiently inhibited by the MVA E2 recombinant vaccinia virus. The absence of side effects in treated animals suggested that the MVA E2 virus is a safe biologic agent that could in the future be used in humans for the treatment of cervical carcinoma.
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Affiliation(s)
- V Valdez Graham
- Department of Molecular Biology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México City, México
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43
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Dorn PL, Engelke D, Rodas A, Rosales R, Melgar S, Brahney B, Flores J, Monroy C. Utility of the polymerase chain reaction in detection of Trypanosoma cruzi in Guatemalan Chagas' disease vectors. Am J Trop Med Hyg 1999; 60:740-5. [PMID: 10344645 DOI: 10.4269/ajtmh.1999.60.740] [Citation(s) in RCA: 36] [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: 11/07/2022] Open
Abstract
For effective control programs, accurate assessment of Trypanosoma cruzi infection in vectors is essential and has traditionally been performed by microscopic examination. For particular vectors and not others, polymerase chain reaction (PCR) analysis of fecal samples recently has been shown to be an effective means of detection. The sensitivities of the PCR and microscopy for detection of T. cruzi in different anatomic sites were compared in the two major vectors of Guatemala, Triatoma dimidiata and Rhodnius prolixus. Preliminary studies established that T. cruzi can be detected by the PCR in the presence of 90% T. rangeli. One hundred thirty-five vectors were collected, and samples were obtained from the rectum, intestines, and stomach and analyzed by microscopy and the PCR. For Triatoma dimidiata rectal samples, the PCR sensitivity (39.1% T. cruzi positive) and the microscopic sensitivity (24.6% positive) was not significantly different. However, in R. prolixus, the PCR proved significantly more sensitive than microscopy: 57.6% positive by PCR compared with 22.7% by microscopy. Rectal samples showed the highest rates of infection followed by intestine and stomach samples. However, 10.5% of the Rhodnius infections would have been missed if only the rectal sample had been analyzed. Thus, the PCR is significantly more sensitive than microscopy for detection of T. cruzi in R. prolixus. Analysis of anatomic sites in addition to the rectal sample may be necessary for accurate assessment of infection in particular vectors.
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Affiliation(s)
- P L Dorn
- Department of Biological Sciences, Loyola University, New Orleans, Louisiana 70118, USA
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44
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Wilhelmsen KC, Moskowitz CB, Weeks DE, Neystat M, Nygaard TG, Clark L, Dancoup M, Sobrevega EE, Rosales R, Gamez GL, Pacioles O, Perez M, Fahn S. Molecular genetic analysis of Lubag. Adv Neurol 1998; 78:341-8. [PMID: 9750931] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- K C Wilhelmsen
- Department of Neurology, University of California, San Francisco 94110, USA
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45
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Rosas G, Cruz-Revilla C, Fragoso G, López-Casillas F, Pérez A, Bonilla MA, Rosales R, Sciutto E. Taenia crassiceps cysticercosis: humoral immune response and protection elicited by DNA immunization. J Parasitol 1998; 84:516-23. [PMID: 9645849] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The purpose of this study was to evaluate DNA vaccination in cysticercosis prevention by using a Taenia crassiceps cDNA of a recombinant antigen (KETc7) that has been reported as protective against murine cysticercosis. The KETc7 cDNA was cloned into the pcDNA3 plasmid alone or with the betaglycan signal peptide sequence (pTc-7 and pTc-sp7, respectively). Positive expression of the pTc-sp7 product was confirmed by transfection of C33 cells and immunofluorescence using sera of mice infected with T. crassiceps. Immunization of mice with 3 injections of pTc-sp7 DNA at the higher dose (200 microg) was the most effective to induce antibody with or without bupivacaine. Immunization with pTc-sp7 induced protection against challenge with T. crassiceps cysticerci as successfully as previously observed with the KETc7 recombinant protein. Antibodies elicited by DNA immunization with pTc-sp7 specifically reacted with the native protein of 56 kDa previously reported, which is immunolocalized in the tegument of T. crassiceps cysticerci. The 56-kDa antigen is also present in Taenia solium oncospheres, cysticerci, and adult tissue. The protection induced in DNA-immunized mice and the observation that the injected plasmid remains as an episomic form within muscle cells, encouraged us to continue testing this procedure to prevent T. solium cysticercosis.
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MESH Headings
- Animals
- Antibodies, Helminth/biosynthesis
- Antibody Specificity
- Antigens, Helminth/genetics
- Cell Line
- Cysticercosis/immunology
- Cysticercosis/prevention & control
- Cysticercus/genetics
- Cysticercus/immunology
- DNA, Complementary/analysis
- DNA, Complementary/immunology
- DNA, Helminth/analysis
- DNA, Helminth/immunology
- Enzyme-Linked Immunosorbent Assay
- Female
- Fluorescent Antibody Technique, Indirect
- Gene Expression
- Helminth Proteins/genetics
- Immunization/methods
- Immunohistochemistry
- Male
- Mice
- Mice, Inbred BALB C
- Muscle, Skeletal/chemistry
- Muscle, Skeletal/cytology
- Plasmids/genetics
- Recombinant Proteins/genetics
- Transfection
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Affiliation(s)
- G Rosas
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, DF, México
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46
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Abstract
A male patient with lymphocytic hypophysitis is reported on. Lymphocytic hypophysitis is a rare disease that may mimic pituitary adenoma and occurs mostly in women in the peripartum period. Only six other cases have been reported in men. Optimal treatment is unclear from the literature, as the results have been inconsistent and the reported cases few. The patient described here was successfully treated by means of transphenoidal surgery and a one year course of treatment with cortisone acetate.
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Affiliation(s)
- A Jabre
- Division of Neurosurgery, Veterans Administration Medical Center, Boston, Massachusetts, USA
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47
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Muggia FM, Jeffers S, Muderspach L, Roman L, Rosales R, Groshen S, Safra T, Morrow CP. Phase I/II study of intraperitoneal floxuridine and platinums (cisplatin and/or carboplatin). Gynecol Oncol 1997; 66:290-4. [PMID: 9264578 DOI: 10.1006/gyno.1997.4778] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Previous studies have shown that intraperitoneal (i.p.) floxuridine (FUDR) is tolerated at a dose of 3 g x 3 days given in 1.5-2 L of normal saline (NS). In a randomized phase II trial by the Southwest Oncology Group, this treatment was selected for further study because of a favorable 1-year progression-free survival. We have now evaluated ip FUDR in full doses combined with i.p. cisplatin given on the third day at a dose of 60 mg/m2 in 500 mL of NS. Intraperitoneal carboplatin was partially or fully substituted for i.p. cisplatin in patients with symptomatic neuropathies. All patients also received i.p. leucovorin, as previously piloted for fluoropyrimidine modulation. Seven patients with symptomatic ascites or measurable tumors were entered, as were 11 asymptomatic patients with minimal residual (< or = 1 cm) epithelial ovarian cancer. Six cycles of the combination of i.p. FUDR + cisplatin were completed in three patients; however, the combination of FUDR with both platinums was particularly well tolerated. Intraperitoneal FUDR + carboplatin (AUC of 5) was associated with some grade 3 and 4 thrombocytopenia and neutropenia. Eight of these 11 patients are alive, and 3 have been continuously with no evidence of disease exceeding 32 months. The regimen of i.p. FUDR + i.p. cisplatin (or i.p. FUDR with both platinums) is suitable for a phase III trial testing i.p. therapy either from the outset (e.g., i.p. up front) or after achieving clinical complete responses from initial treatment without intervening relapse (i.e., i.p. consolidation) in comparison to i.p. cisplatin.
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Affiliation(s)
- F M Muggia
- University of Southern California-Kenneth Norris, Jr., Comprehensive Cancer Center, Los Angeles 90033, USA
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48
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Casthely PA, Shah C, Mekhjian H, Swistel D, Yoganathan T, Komer C, Miguelino RA, Rosales R. Left ventricular diastolic function after coronary artery bypass grafting: a correlative study with three different myocardial protection techniques. J Thorac Cardiovasc Surg 1997; 114:254-60. [PMID: 9270644 DOI: 10.1016/s0022-5223(97)70153-3] [Citation(s) in RCA: 36] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND This study was designed to examine the effect of myocardial protection on diastolic function after cardiac operations. METHODS Subjects were patients with normal preoperative diastolic function who were scheduled for coronary artery bypass grafting. Group I received anterograde cardioplegia; group II received anterograde and retrograde cardioplegia; and group III was protected with ventricular fibrillation and intermittent aortic crossclamping. Operations were performed with mild hypothermia and ventricular venting through the left superior pulmonary vein in all cases. Left ventricular diastolic function was evaluated with pulsed-wave Doppler transesophageal echocardiography (samples at the mitral valve leaflet: four-chamber view) and left superior pulmonary vein flow velocity. The flow patterns were stored on videotape and sent to an independent investigator for analysis. Left ventricular ejection fraction was calculated with transesophageal echocardiography (short-axis view, two-dimensional and M-mode). RESULTS Left ventricular diastolic function, as measured by the ratio between the peak velocities during early filling and atrial contraction and by systolic diastolic superior pulmonary venous flow ratio, was significantly impaired in all three groups 5 minutes after discontinuation of cardiopulmonary bypass. At 1 hour after operation, these values had returned to control levels only in group III. There was an increased incidence of supraventricular arrhythmias in group III. There were no significant hemodynamic differences among the three groups. CONCLUSIONS Left ventricular diastolic function was severely impaired after cardiopulmonary bypass. The degree of impairment depended on the myocardial protection used. The impairment in diastolic function was less when ventricular fibrillation and intermittent aortic crossclamping were used, and greater when anterograde and retrograde cardioplegia were used.
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Affiliation(s)
- P A Casthely
- Seton Hall University, Paterson, N.J. 07503, USA
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49
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Higuchi I, Hashimoto K, Matsuoka E, Rosales R, Nakagawa M, Arimura K, Izumo S, Osame M. The main HTLV-I-harboring cells in the muscles of viral carriers with polymyositis are not macrophages but CD4+ lymphocytes. Acta Neuropathol 1996; 92:358-61. [PMID: 8891067 DOI: 10.1007/s004010050530] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [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: 02/02/2023]
Abstract
We have analyzed muscle biopsy specimens from polymyositis patients who are also positive for human T cell lymphotropic virus type I (HTLV-I) using both immunohistochemistry for surface antigens of lymphocytes and macrophages and in situ polymerase chain reaction for HTLV-I proviral DNA on the same sections. We found HTLV-I in CD4+ cells but not in macrophages. This finding suggests that most of the HTLV-I-containing CD4+ cells are not macrophages but lymphocytes.
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Affiliation(s)
- I Higuchi
- Third Department of Internal Medicine, Faculty of Medicine, Kagoshima University, Japan.
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50
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Moritoyo H, Arimura K, Arimura Y, Tokimura Y, Rosales R, Osame M. Study of lower limb somatosensory evoked potentials in 96 cases of HTLV-I-associated myelopathy/tropical spastic paraparesis. J Neurol Sci 1996; 138:78-81. [PMID: 8791242 DOI: 10.1016/0022-510x(95)00351-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [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: 02/02/2023]
Abstract
Lower limb somatosensory evoked potentials (LSEPs) were performed along with neurological evaluation in 96 HTLV-I-associated myelopathy/tropical spastic paraparesis (HAM/TSP) patients. The N20 latencies were abnormal in 5 cases. Central sensory conduction time (CSCT) was abnormal in 42 cases. A highly significant correlation (p < 0.001, r = 0.418) was found between CSCT and disability score. Such a correlation was not found between CSCT and other clinical findings, onset of illness, illness duration, serum and CSF antibody titer to HTLV-I and vibratory sensation. There was no difference of the mean of CSCT between the cases with sensory impairment and those without it. This shows that LSEPs are useful to estimate the disability of HAM/TSP. Also the cases with delayed CSCT and normal sensation suggest that LSEPs are capable of detecting subclinical lesions of the spinal cord in HAM/TSP.
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Affiliation(s)
- H Moritoyo
- Third Department of Internal Medicine, Kagoshima University Faculty of Medicine, Japan
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