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Machado RRG, Candido ÉD, Aguiar AS, Chalup VN, Sanches PR, Dorlass EG, Amgarten DE, Pinho JRR, Durigon EL, Oliveira DBL. Immune Evasion of SARS-CoV-2 Omicron Subvariants XBB.1.5, XBB.1.16 and EG.5.1 in a Cohort of Older Adults after ChAdOx1-S Vaccination and BA.4/5 Bivalent Booster. Vaccines (Basel) 2024; 12:144. [PMID: 38400128 PMCID: PMC10892985 DOI: 10.3390/vaccines12020144] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/15/2023] [Accepted: 01/03/2024] [Indexed: 02/25/2024] Open
Abstract
The recently emerged SARS-CoV-2 Omicron sublineages, including the BA.2-derived XBB.1.5 (Kraken), XBB.1.16 (Arcturus), and EG.5.1 (Eris), have accumulated several spike mutations that may increase immune escape, affecting vaccine effectiveness. Older adults are an understudied group at significantly increased risk of severe COVID-19. Here we report the neutralizing activities of 177 sera samples from 59 older adults, aged 62-97 years, 1 and 4 months after vaccination with a 4th dose of ChAdOx1-S (Oxford/AstraZeneca) and 3 months after a 5th dose of Comirnaty Bivalent Original/Omicron BA.4/BA.5 vaccine (Pfizer-BioNTech). The ChAdOx1-S vaccination-induced antibodies neutralized efficiently the ancestral D614G and BA.4/5 variants, but to a much lesser extent the XBB.1.5, XBB.1.16, and EG.5.1 variants. The results showed similar neutralization titers between XBB.1.16 and EG.5.1 and were lower compared to XBB.1.5. Sera from the same individuals boosted with the bivalent mRNA vaccine contained higher neutralizing antibody titers, providing a better cross-protection against Omicron XBB.1.5, XBB.1.16 and EG.5.1 variants. Previous history of infection during the epidemiological waves of BA.1/BA.2 and BA.4/BA.5, poorly enhanced neutralization activity of serum samples against XBBs and EG.5.1 variants. Our data highlight the continued immune evasion of recent Omicron subvariants and support the booster administration of BA.4/5 bivalent vaccine, as a continuous strategy of updating future vaccine booster doses to match newly emerged SARS-CoV-2 variants.
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Affiliation(s)
- Rafael Rahal Guaragna Machado
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
| | - Érika Donizetti Candido
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
| | - Andressa Simoes Aguiar
- Dom Pedro II Geriatric and Convalescent Hospital, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo 02265-002, SP, Brazil
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
| | - Vanessa Nascimento Chalup
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
| | - Patricia Romão Sanches
- Dom Pedro II Geriatric and Convalescent Hospital, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo 02265-002, SP, Brazil
| | - Erick Gustavo Dorlass
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
- Hospital Israelita Albert Einstein, São Paulo 05652-900, SP, Brazil
| | | | - João Renato Rebello Pinho
- Hospital Israelita Albert Einstein, São Paulo 05652-900, SP, Brazil
- Laboratório de Medicina Laboratorial (LIM03), Department of Pathology, School of Medicine, University of São Paulo, São Paulo 01246-903, SP, Brazil
- Laboratório de Gastroenterologia Clínica e Experimental (LIM07), Department of Gastroenterology, School of Medicine, University of São Paulo, São Paulo 01246-903, SP, Brazil
| | - Edison Luiz Durigon
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
- Scientific Platform Pasteur-USP, São Paulo 05508-020, SP, Brazil
| | - Danielle Bruna Leal Oliveira
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
- Hospital Israelita Albert Einstein, São Paulo 05652-900, SP, Brazil
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Silva Souza M, Pires Farias J, Barros Luiz W, Birbrair A, Durães-Carvalho R, de Souza Ferreira LC, Amorim JH. Immune targets to stop future SARS-CoV-2 variants. Microbiol Spectr 2023; 11:e0289223. [PMID: 37966210 PMCID: PMC10714790 DOI: 10.1128/spectrum.02892-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 10/08/2023] [Indexed: 11/16/2023] Open
Abstract
IMPORTANCE The emergence of SARS-CoV-2 had a major impact across the world. It is true that the collaboration of scientists from all over the world resulted in a rapid response against COVID-19, mainly with the development of vaccines against the disease. However, many viral genetic variants that threaten vaccines have emerged. Our study reveals highly conserved antigenic regions in the vaccines have emerged. Our study reveals highly conserved antigenic regions in the spike protein in all variants of concern (Alpha, Beta, Gamma, Delta, and Omicron) as well as in the wild-type virus. Such immune targets can be used to fight future SARS-CoV-2 variants.
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Affiliation(s)
- Milena Silva Souza
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
- Department of Biological Sciences, Laboratory of Applied Pathology and Genetics, State University of Santa Cruz, Ilhéus, Bahia, Brazil
| | - Jéssica Pires Farias
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
| | - Wilson Barros Luiz
- Department of Biological Sciences, Laboratory of Applied Pathology and Genetics, State University of Santa Cruz, Ilhéus, Bahia, Brazil
| | - Alexander Birbrair
- Department of Dermatology, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, Wisconsin, USA
- Department of Radiology, Columbia University Medical Center, New York, New York, USA
| | - Ricardo Durães-Carvalho
- Department of Microbiology, Immunology and Parasitology, São Paulo School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Luís Carlos de Souza Ferreira
- Department of Microbiology, Vaccine Development Laboratory, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | - Jaime Henrique Amorim
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
- Department of Biological Sciences, Laboratory of Applied Pathology and Genetics, State University of Santa Cruz, Ilhéus, Bahia, Brazil
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Pires Farias J, Andreata-Santos R, Dalety da Silva Brito R, Silva Souza M, Moreira Costa Fogaça M, Ramos Pinheiro J, Ferreira da Cruz E, Liang W, Simões RDC, Barros Luiz W, Birbrair A, Oliveira Vidal P, Terzi Maricato J, Torres Braconi C, Ferreira LCDS, Ramos Janini LM, Amorim JH. The fourth COVID-19 vaccine dose increased the neutralizing antibody response against the SARS-CoV-2 Omicron (B.1.1.529) variant in a diverse Brazilian population. Microbiol Spectr 2023; 11:e0285723. [PMID: 37909777 PMCID: PMC10714775 DOI: 10.1128/spectrum.02857-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/25/2023] [Indexed: 11/03/2023] Open
Abstract
IMPORTANCE Several additional COVID-19 vaccine doses were administered in the Brazilian population to prevent the disease caused by the B.1.1.529 (Omicron) variant. The efficacy of a third dose as a booster is already well described. However, it is important to clarify the humoral immune response gain induced by a fourth dose. In this study, we evaluate the effect of the fourth COVID-19 vaccine dose in a diverse Brazilian population, considering a real-life context. Our study reveals that the fourth dose of the COVID-19 vaccine increased the neutralizing antibody response against SARS-CoV-2 Omicron and significantly contributed in the reduction of the disease caused by this variant.
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Affiliation(s)
- Jéssica Pires Farias
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
| | - Robert Andreata-Santos
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, São Paulo, Brazil
| | - Ruth Dalety da Silva Brito
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
| | - Milena Silva Souza
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
- Department of Biological Sciences, State University of Santa Cruz, Ilhéus, Bahia, Brazil
| | - Mayanna Moreira Costa Fogaça
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
| | - Josilene Ramos Pinheiro
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
| | - Edgar Ferreira da Cruz
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, São Paulo, Brazil
| | - Willian Liang
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, São Paulo, Brazil
| | - Rafael da Conceição Simões
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
| | - Wilson Barros Luiz
- Department of Biological Sciences, State University of Santa Cruz, Ilhéus, Bahia, Brazil
| | - Alexander Birbrair
- Department of Dermatology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Department of Radiology, Columbia University Medical Center, New York, New York, USA
| | - Paloma Oliveira Vidal
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
| | - Juliana Terzi Maricato
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, São Paulo, Brazil
| | - Carla Torres Braconi
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, São Paulo, Brazil
| | - Luís Carlos de Souza Ferreira
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, São Paulo, Brazil
- Scientific Platform Pasteur USP, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Luiz Mário Ramos Janini
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, São Paulo, Brazil
- Department of Medicine, Division of Infectology, Federal University of São Paulo, São Paulo, São Paulo, Brazil
| | - Jaime Henrique Amorim
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Bahia, Brazil
- Department of Biological Sciences, State University of Santa Cruz, Ilhéus, Bahia, Brazil
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, São Paulo, Brazil
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Gutman EG, Fernandes RA, Raposo-Vedovi JV, Salvio AL, Duarte LA, Tardim CF, Costa VGC, Pereira VCSR, Bahia PRV, da Silva MM, Fontes-Dantas FL, Alves-Leon SV. Molecular Mimicry between SARS-CoV-2 Proteins and Human Self-Antigens Related with Autoimmune Central Nervous System (CNS) Disorders. Microorganisms 2023; 11:2902. [PMID: 38138047 PMCID: PMC10745528 DOI: 10.3390/microorganisms11122902] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 12/24/2023] Open
Abstract
SARS-CoV-2 can trigger autoimmune central nervous system (CNS) diseases in genetically susceptible individuals, a mechanism poorly understood. Molecular mimicry (MM) has been identified in other viral diseases as potential triggers of autoimmune CNS events. This study investigated if MM is the process through which SARS-CoV-2 induces the breakdown of immune tolerance. The frequency of autoimmune CNS disorders was evaluated in a prospective cohort with patients admitted to the COVID-19 Intense Care Unity (ICU) in Rio de Janeiro. Then, an in silico analysis was performed to identify the conserved regions that share a high identity between SARS-CoV-2 antigens and human proteins. The sequences with significant identity and antigenic properties were then assessed for their binding capacity to HLA subtypes. Of the 112 patients included, 3 were classified as having an autoimmune disorder. A total of eleven combinations had significant linear and three-dimensional overlap. NMDAR1, MOG, and MPO were the self-antigens with more significant combinations, followed by GAD65. All sequences presented at least one epitope with strong or intermediate binding capacity to the HLA subtypes selected. This study underscores the possibility that CNS autoimmune attacks observed in COVID-19 patients, including those in our population, could be driven by MM in genetically predisposed individuals.
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Affiliation(s)
- Elisa Gouvea Gutman
- Translational Neuroscience Laboratory (LabNet), Biomedical Institute, Federal University of the State of Rio de Janeiro, Rio de Janeiro 20211-030, RJ, Brazil; (E.G.G.); (R.A.F.); (J.V.R.-V.); (A.L.S.); (L.A.D.)
- Clinical Medicine Post-Graduation Program, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, RJ, Brazil
| | - Renan Amphilophio Fernandes
- Translational Neuroscience Laboratory (LabNet), Biomedical Institute, Federal University of the State of Rio de Janeiro, Rio de Janeiro 20211-030, RJ, Brazil; (E.G.G.); (R.A.F.); (J.V.R.-V.); (A.L.S.); (L.A.D.)
| | - Jéssica Vasques Raposo-Vedovi
- Translational Neuroscience Laboratory (LabNet), Biomedical Institute, Federal University of the State of Rio de Janeiro, Rio de Janeiro 20211-030, RJ, Brazil; (E.G.G.); (R.A.F.); (J.V.R.-V.); (A.L.S.); (L.A.D.)
| | - Andreza Lemos Salvio
- Translational Neuroscience Laboratory (LabNet), Biomedical Institute, Federal University of the State of Rio de Janeiro, Rio de Janeiro 20211-030, RJ, Brazil; (E.G.G.); (R.A.F.); (J.V.R.-V.); (A.L.S.); (L.A.D.)
| | - Larissa Araujo Duarte
- Translational Neuroscience Laboratory (LabNet), Biomedical Institute, Federal University of the State of Rio de Janeiro, Rio de Janeiro 20211-030, RJ, Brazil; (E.G.G.); (R.A.F.); (J.V.R.-V.); (A.L.S.); (L.A.D.)
- Clinical Medicine Post-Graduation Program, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, RJ, Brazil
| | - Caio Faria Tardim
- Department of Neurology, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, RJ, Brazil; (C.F.T.); (V.C.S.R.P.); (M.M.d.S.)
| | | | - Valéria Coelho Santa Rita Pereira
- Department of Neurology, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, RJ, Brazil; (C.F.T.); (V.C.S.R.P.); (M.M.d.S.)
| | - Paulo Roberto Valle Bahia
- Department of Radiology, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, RJ, Brazil;
| | - Marcos Martins da Silva
- Department of Neurology, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, RJ, Brazil; (C.F.T.); (V.C.S.R.P.); (M.M.d.S.)
| | - Fabrícia Lima Fontes-Dantas
- Department of Pharmacology, Institute of Biology, Rio de Janeiro State University, Rio de Janeiro 20950-000, RJ, Brazil
| | - Soniza Vieira Alves-Leon
- Translational Neuroscience Laboratory (LabNet), Biomedical Institute, Federal University of the State of Rio de Janeiro, Rio de Janeiro 20211-030, RJ, Brazil; (E.G.G.); (R.A.F.); (J.V.R.-V.); (A.L.S.); (L.A.D.)
- Department of Neurology, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro 21941-913, RJ, Brazil; (C.F.T.); (V.C.S.R.P.); (M.M.d.S.)
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de França Cirilo MV, Pour SZ, de Fatima Benedetti V, Farias JP, Fogaça MMC, da Conceição Simões R, Vidal PO, Birbrair A, de Andrade Zanotto PM, Luiz WB, Amorim JH. Co-circulation of Chikungunya virus, Zika virus, and serotype 1 of Dengue virus in Western Bahia, Brazil. Front Microbiol 2023; 14:1240860. [PMID: 37680530 PMCID: PMC10482036 DOI: 10.3389/fmicb.2023.1240860] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/03/2023] [Indexed: 09/09/2023] Open
Abstract
Chikungunya, mayaro, dengue, zika, and yellow fever are mosquito-borne viral diseases caused, respectively, by Chikungunya virus, Mayaro virus (CHIKV and MAYV, respectively: Togaviridae: Alphavirus), Dengue virus, Zika virus, and Yellow fever virus (DENV, ZIKV, and YFV, respectively: Flaviviridae: Flavivirus). These viruses have an important epidemiological impact worldwide, especially in Brazil. Western Bahia is one of the less studied regions in that country regarding the circulation of these pathogens. In this study, we aimed to apply molecular biology assays to better know the mosquito-borne viruses circulating in Barreiras and Luís Eduardo Magalhães, two main cities of Western Bahia. From March to June 2021, we enrolled 98 patients with the clinical diagnosis of dengue. Personal information (gender and age) were retrieved at the moment of enrollment. Serum samples were obtained from volunteers and used in molecular detection of CHIKV, MAYV, DENV, ZIKV, and YFV by reverse transcription followed by real-time polymerase chain reaction as well as in genome sequencing aiming phylogenetic analysis. As the main result, we found that from the 98 patients 45 were infected by CHIKV, 32 were infected by serotype 1 of DENV (DENV-1) and six were infected by ZIKV, while 15 were negative for all arboviruses tested. In addition, phylogenetic analysis revealed that all CHIKV-positive samples were of the East/Central/South African (ECSA) genotype, while all DENV-1-positive samples were of the V genotype. These results clearly show that epidemiological surveillance cannot be based only on clinical evaluations. Laboratory diagnosis is important in arbovirus infection that are prevalent in a particular area. These findings also demonstrate the co-circulation of many arboviruses in Western Bahia in 2021.
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Affiliation(s)
- Marcus Vinicius de França Cirilo
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Brazil
| | - Shahab Zaki Pour
- Laboratory of Molecular Evolution and Bioinformatics, Department of Microbiology, University of Sao Paulo, Sao Paulo, Brazil
| | - Viviane de Fatima Benedetti
- Laboratory of Molecular Evolution and Bioinformatics, Department of Microbiology, University of Sao Paulo, Sao Paulo, Brazil
| | - Jéssica Pires Farias
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Brazil
| | - Mayanna Moreira Costa Fogaça
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Brazil
| | - Rafael da Conceição Simões
- Laboratory of Biochemistry and Plant Physiology, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Brazil
| | - Paloma Oliveira Vidal
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Brazil
| | - Alexander Birbrair
- Department of Dermatology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | | | - Wilson Barros Luiz
- Laboratory of Applied Pathology and Genetics, Department of Biological Sciences, State University of Santa Cruz, Ilhéus, Brazil
| | - Jaime Henrique Amorim
- Western Bahia Virology Institute, Center of Biological Sciences and Health, Federal University of Western Bahia, Barreiras, Brazil
- Laboratory of Molecular Evolution and Bioinformatics, Department of Microbiology, University of Sao Paulo, Sao Paulo, Brazil
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6
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Ramos MFDP, Monteiro de Barros ADCM, Razvickas CV, Borges FT, Schor N. Xanthine oxidase inhibitors and sepsis. Int J Immunopathol Pharmacol 2018; 32:2058738418772210. [PMID: 29786457 PMCID: PMC5967155 DOI: 10.1177/2058738418772210] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 03/08/2018] [Indexed: 12/13/2022] Open
Abstract
Xanthine oxidase activation occurs in sepsis and results in the generation of uric acid (UrAc) and reactive oxygen species (ROS). We aimed to evaluate the effect of xanthine oxidase inhibitors (XOis) in rats stimulated with lipopolysaccharide (LPS). LPS (10 mg/kg) was administered intraperitoneally (i.p.) immediately after allopurinol (Alo, 2 mg/kg) or febuxostat (Feb, 1 mg/kg) every 24 h for 3 days. To increase UrAc levels, oxonic acid (Oxo) was administered by gavage (750 mg/kg per day) for 5 days. Animals were divided into the following 10 groups (n = 6 each): (1) Control, (2) Alo, (3) Feb, (4) LPS, (5) LPSAlo, (6) LPSFeb, (7) Oxo, (8) OxoLPS, (9) OxoLPSAlo, and (10) OxoLPSFeb. Feb with or without Oxo did not aggravate sepsis. LPS administration (with or without Oxo) significantly decreased the creatinine clearance (ClCr) in LPSAlo (60%, P < 0.01) versus LPS (44%, P < 0.05) and LPSFeb (35%, P < 0.05). Furthermore, a significant increase in mortality was observed with LPSAlo (28/34, 82%) compared to LPS treatment alone (10/16, 63%) and LPSFeb (11/17, 65%, P < 0.05). In addition, increased levels of thiobarbituric acid reactive substances (TBARS), tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-10 were observed at 72 h compared to the groups that received LPS and LPSFeb with or without Oxo. In this study, coadministration of Alo in LPS-induced experimental sepsis aggravated septic shock, leading to mortality, renal function impairment, and high ROS and proinflammatory IL levels. In contrast, administration of Feb did not potentiate sepsis, probably because it did not interfere with other metabolic events.
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Affiliation(s)
- Maria Fátima de Paula Ramos
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
| | | | - Clara Versolato Razvickas
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
| | - Fernanda T Borges
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
- Universidade Cruzeiro do Sul, São Paulo,
Brazil
| | - Nestor Schor
- Division of Nephrology, Department of
Medicine, Escola Paulista De Medicina (EPM), Universidade Federal de São Paulo
(UNIFESP), São Paulo, Brazil
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