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de Medeiros Brito RM, Meurer YDSR, Batista JAL, de Sá AL, de Medeiros Souza CR, de Souto JT, de Andrade-Neto VF. Chronic Toxoplasma gondii infection contributes to perineuronal nets impairment in the primary somatosensory cortex. Parasit Vectors 2022; 15:487. [PMID: 36566237 PMCID: PMC9790132 DOI: 10.1186/s13071-022-05596-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 11/18/2022] [Indexed: 12/25/2022] Open
Abstract
Toxoplasma gondii is able to manipulate the host immune system to establish a persistent and efficient infection, contributing to the development of brain abnormalities with behavioral repercussions. In this context, this work aimed to evaluate the effects of T. gondii infection on the systemic inflammatory response and structure of the primary somatosensory cortex (PSC). C57BL/6 and BALB/c mice were infected with T. gondii ME49 strain tissue cysts and accompanied for 30 days. After this period, levels of cytokines IFN-γ, IL-12, TNF-α and TGF-β were measured. After blood collection, mice were perfused and the brains were submitted to immunohistochemistry for perineuronal net (PNN) evaluation and cyst quantification. The results showed that C57BL/6 mice presented higher levels of TNF-α and IL-12, while the levels of TGF-β were similar between the two mouse lineages, associated with the elevated number of tissue cysts, with a higher occurrence of cysts in the posterior area of the PSC when compared to BALB/c mice, which presented a more homogeneous cyst distribution. Immunohistochemistry analysis revealed a greater loss of PNN labeling in C57BL/6 animals compared to BALB/c. These data raised a discussion about the ability of T. gondii to stimulate a systemic inflammatory response capable of indirectly interfering in the brain structure and function.
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Affiliation(s)
- Ramayana Morais de Medeiros Brito
- grid.411233.60000 0000 9687 399XPostgraduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte Brazil ,grid.411233.60000 0000 9687 399XLaboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte Brazil
| | - Ywlliane da Silva Rodrigues Meurer
- grid.411216.10000 0004 0397 5145Postgraduate Program in Cognitive Neuroscience and Behavior, Memory and Cognition Studies Laboratory, Federal University of Paraíba, João Pessoa, Paraíba Brazil
| | - Jully Anne Lemos Batista
- grid.411233.60000 0000 9687 399XLaboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte Brazil
| | - Andréa Lima de Sá
- grid.411233.60000 0000 9687 399XLaboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte Brazil
| | - Cássio Ricardo de Medeiros Souza
- grid.411233.60000 0000 9687 399XLaboratory of Immunopharmacology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte Brazil
| | - Janeusa Trindade de Souto
- grid.411233.60000 0000 9687 399XLaboratory of Immunopharmacology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte Brazil
| | - Valter Ferreira de Andrade-Neto
- grid.411233.60000 0000 9687 399XLaboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte Brazil
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da Silva MK, Azevedo AAC, Campos DMDO, de Souto JT, Fulco UL, Oliveira JIN. Computational vaccinology guided design of multi-epitope subunit vaccine against a neglected arbovirus of the Americas. J Biomol Struct Dyn 2022; 41:3321-3338. [PMID: 35285772 DOI: 10.1080/07391102.2022.2050301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mayaro virus (MAYV) is an arbovirus found in the Americas that can cause debilitating arthritogenic disease. Although it is an emerging virus, the only current approach is vector control, as there are no approved vaccines to prevent MAYV infection nor therapeutics to treat it. In search of an effective vaccine candidate against MAYV, we used immunoinformatics and molecular modeling to attempt to identify promiscuous T-cell epitopes of the nonstructural polyproteins (nsP1, nsP2, nsP3, and nsP4) from 127 MAYV genomes sequenced in the Americas (08 Bolivia, 72 Brazil, 04 French Guiana, 05 Haiti, 20 Peru, 04 Trinidad and Tobago, and 14 Venezuela). For this purpose, consensus sequences of 360 proteins were used to identify short protein sequences that can bind to MHC I class (MHC II). Our analysis revealed 56 potential MHC-I/TCD8+ (29 MHC-II/TCD4+) epitopes, but only 6 (16) TCD8+ (TCD4+) epitopes showed high antigenicity and conservation, non-allergenicity, non-toxicity, and excellent population coverage. Finally, classical and quantum mechanical calculations (QM:MM) were used to improve the quality of the docking calculations, with the QM part of the simulations performed using the density functional theory formalism (DFT). These results provide insights for the advancement of diagnostic platforms, vaccine development, and immunotherapeutic interventions.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Maria Karolaynne da Silva
- Departamento de Biofísica e Farmacologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | | | | | - Janeusa Trindade de Souto
- Departamento de Microbiologia e Parasitologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Umberto Laino Fulco
- Departamento de Biofísica e Farmacologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | - Jonas Ivan Nobre Oliveira
- Departamento de Biofísica e Farmacologia, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
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Teixeira PC, Dorneles GP, Santana Filho PC, da Silva IM, Schipper LL, Postiga IAL, Neves CAM, Rodrigues Junior LC, Peres A, Souto JTD, Fonseca SG, Eller S, Oliveira TF, Rotta LN, Thompson CE, Romão PRT. Increased LPS levels coexist with systemic inflammation and result in monocyte activation in severe COVID-19 patients. Int Immunopharmacol 2021; 100:108125. [PMID: 34543980 PMCID: PMC8426217 DOI: 10.1016/j.intimp.2021.108125] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 07/05/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 12/23/2022]
Abstract
Mucosal barrier alterations may play a role in the pathogenesis of several diseases, including COVID-19. In this study we evaluate the association between bacterial translocation markers and systemic inflammation at the earliest time-point after hospitalization and at the last 72 h of hospitalization in survivors and non-survivors COVID-19 patients. Sixty-six SARS-CoV-2 RT-PCR positive patients and nine non-COVID-19 pneumonia controls were admitted in this study. Blood samples were collected at hospital admission (T1) (Controls and COVID-19 patients) and 0-72 h before hospital discharge (T2, alive or dead) to analyze systemic cytokines and chemokines, lipopolysaccharide (LPS) concentrations and soluble CD14 (sCD14) levels. THP-1 human monocytic cell line was incubated with plasma from survivors and non-survivors COVID-19 patients and their phenotype, activation status, TLR4, and chemokine receptors were analyzed by flow cytometry. COVID-19 patients presented higher IL-6, IFN-γ, TNF-α, TGF-β1, CCL2/MCP-1, CCL4/MIP-1β, and CCL5/RANTES levels than controls. Moreover, LPS and sCD14 were higher at hospital admission in SARS-CoV-2-infected patients. Non-survivors COVID-19 patients had increased LPS levels concomitant with higher IL-6, TNF-α, CCL2/MCP-1, and CCL5/RANTES levels at T2. Increased expression of CD16 and CCR5 were identified in THP-1 cells incubated with the plasma of survivor patients obtained at T2. The incubation of THP-1 with T2 plasma of non-survivors COVID-19 leads to higher TLR4, CCR2, CCR5, CCR7, and CD69 expression. In conclusion, the coexistence of increased microbial translocation and hyperinflammation in patients with severe COVID-19 may lead to higher monocyte activation, which may be associated with worsening outcomes, such as death.
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Affiliation(s)
- Paula C Teixeira
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Gilson P Dorneles
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil.
| | - Paulo C Santana Filho
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Igor M da Silva
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Lucas L Schipper
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Isabelle A L Postiga
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Carla Andretta Moreira Neves
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | | | - Alessandra Peres
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Graduate Program in Rehabilitation Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Janeusa Trindade de Souto
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Brazil
| | | | - Sarah Eller
- Pharmacosciences Department, Federal University of Health Sciences of Porto Alegre, Brazil
| | - Tiago F Oliveira
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Pharmacosciences Department, Federal University of Health Sciences of Porto Alegre, Brazil
| | - Liane N Rotta
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Claudia Elizabeth Thompson
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Pharmacosciences Department, Federal University of Health Sciences of Porto Alegre, Brazil
| | - Pedro R T Romão
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil; Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil.
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da Silva MHM, Moises RNC, Alves BEB, Pereira HWB, de Paiva AAP, Morais IC, Nascimento YM, Monteiro JD, de Souto JT, Nascimento MSL, de Araújo JMG, da Guedes PMM, Fernandes JV. Innate immune response in patients with acute Zika virus infection. Med Microbiol Immunol 2019; 208:703-714. [PMID: 30879197 DOI: 10.1007/s00430-019-00588-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 02/25/2019] [Indexed: 12/11/2022]
Abstract
Innate immunity receptors (Toll-like receptors/TLRs and RIG-like receptors/RLRs) are important for the initial recognition of Zika virus (ZIKV), modulation of protective immune response, and IFN-α and IFN-β production. Immunological mechanisms involved in protection or pathology during ZIKV infection have not yet been determined. In this study, we evaluated the mRNA expression of innate immune receptors (TLR3, TLR7, TLR8, TLR9, melanoma differentiation-associated protein 5/MDA-5, and retinoic acid inducible gene/RIG-1), its adapter molecules (Myeloid Differentiation Primary Response Gene 88/Myd88, Toll/IL-1 Receptor Domain-Containing Adaptor-Inducing IFN-β/TRIF), and cytokines (IL-6, IL-12, TNF-α, IFN-α, IFN-β, and IFN-γ) in the acute phase of patients infected by ZIKV using real-time PCR in peripheral blood. Patients with acute ZIKV infection had high expression of TLR3, IFN-α, IFN-β, and IFN-γ when compared to healthy controls. In addition, there was a positive correlation between TLR3 expression compared to IFN-α and IFN-β. Moreover, viral load is positively correlated with TLR8, RIG-1, MDA-5, IFN-α, and IFN-β. On the other hand, patients infected by ZIKV showed reduced expression of RIG-1, TLR8, Myd88, and TNF-α molecules, which are also involved in antiviral immunity. Similar expressions of TLR7, TLR9, MDA-5, TRIF, IL-6, and IL-12 were observed between the group of patients infected with ZIKV and control subjects. Our results indicate that acute infection (up to 5 days after the onset of symptoms) by ZIKV in patients induces the high mRNA expression of TLR3 correlated to high expression of IFN-γ, IFN-α, and IFN-β, even though the high viral load is correlated to high expression of TLR8, RIG-1, MDA-5, IFN-α, and IFN-β in ZIKV patients.
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Affiliation(s)
- Marcelo Henrique Matias da Silva
- Graduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil
| | - Raiza Nara Cunha Moises
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil
| | - Brenda Elen Bizerra Alves
- Graduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Laboratory of Virology, Institute of Tropical Medicine, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Hannaly Wana Bezerra Pereira
- Graduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Laboratory of Virology, Institute of Tropical Medicine, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Anne Aline Pereira de Paiva
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Laboratory of Virology, Institute of Tropical Medicine, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Ingryd Câmara Morais
- Laboratory of Virology, Institute of Tropical Medicine, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Yasmim Mesquita Nascimento
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Laboratory of Virology, Institute of Tropical Medicine, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Joelma Dantas Monteiro
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Laboratory of Virology, Institute of Tropical Medicine, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Janeusa Trindade de Souto
- Graduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil
| | - Manuela Sales Lima Nascimento
- Edmond and Lily Safra International Institute of Neuroscience (ELS-IIN), Santos Dumont Institute, Macaíba, RN, Brazil
| | - Josélio Maria Galvão de Araújo
- Graduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.,Laboratory of Virology, Institute of Tropical Medicine, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Paulo Marcos Matta da Guedes
- Graduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil. .,Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.
| | - José Veríssimo Fernandes
- Graduate Program in Parasitary Biology, Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil. .,Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Rio Grande Do Norte, Brazil.
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da Silva TA, Fontes FL, Coutinho LG, de Souza FRS, de Melo JTA, de Souto JT, Leib SL, Agnez-Lima LF. SNPs in DNA repair genes associated to meningitis and host immune response. Mutat Res 2011; 713:39-47. [PMID: 21651918 DOI: 10.1016/j.mrfmmm.2011.05.012] [Citation(s) in RCA: 16] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Revised: 05/11/2011] [Accepted: 05/20/2011] [Indexed: 05/30/2023]
Abstract
In vitro and in animal models, APE1, OGG1, and PARP-1 have been proposed as being involved with inflammatory response. In this work, we have investigated if the SNPs APE1 Asn148Glu, OGG1 Ser326Cys, and PARP-1 Val762Ala are associated to meningitis. The patient genotypes were investigated by PIRA-PCR or PCR-RFLP. DNA damages were detected in genomic DNA by Fpg treatment. IgG and IgA were measured from plasma and the cytokines and chemokines were measured from cerebrospinal fluid samples using Bio-Plex assays. A higher frequency (P<0.05) of APE1 Glu allele in bacterial meningitis (BM) and aseptic meningitis (AM) patients was observed. The genotypes Asn/Asn in control group and Asn/Glu in BM group was also higher. For the SNP OGG1 Ser326Cys, the genotype Cys/Cys was more frequent (P<0.05) in BM group. The frequency of PARP-1 Val/Val genotype was higher in control group (P<0.05). The occurrence of combined SNPs is significantly higher in BM patients, indicating that these SNPs may be associated to the disease. Increasing in sensitive sites to Fpg was observed in carriers of APE1 Glu allele or OGG1 Cys allele, suggesting that SNPs affect DNA repair activity. Alterations in IgG production were observed in the presence of SNPs APE1 Asn148Glu, OGG1 Ser326Cys or PARP-1 Val762Ala. Moreover, reduction in the levels of IL-6, IL-1Ra, MCP-1/CCL2 and IL-8/CXCL8 was observed in the presence of APE1 Glu allele in BM patients. In conclusion, we obtained indications of an effect of SNPs in DNA repair genes on the regulation of immune response in meningitis.
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Affiliation(s)
- Thayse Azevedo da Silva
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte (UFRN), Av. Salgado Filho s/n, 59072-970 Natal, RN, Brazil
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