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Gouveia-Eufrasio L, de Freitas GJC, Costa MC, Peres-Emidio EC, Carmo PHF, Rodrigues JGM, de Rezende MC, Rodrigues VF, de Brito CB, Miranda GS, de Lima PA, da Silva LMV, Oliveira JBS, da Paixão TA, da Glória de Souza D, Fagundes CT, Peres NTDA, Negrão-Correa DA, Santos DA. The Th2 Response and Alternative Activation of Macrophages Triggered by Strongyloides venezuelensis Is Linked to Increased Morbidity and Mortality Due to Cryptococcosis in Mice. J Fungi (Basel) 2023; 9:968. [PMID: 37888224 PMCID: PMC10607621 DOI: 10.3390/jof9100968] [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: 08/01/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/28/2023] Open
Abstract
Cryptococcosis is a systemic mycosis that causes pneumonia and meningoencephalitis. Strongyloidiasis is a chronic gastrointestinal infection caused by parasites of the genus Strongyloides. Cryptococcosis and strongyloidiasis affect the lungs and are more prevalent in the same world regions, i.e., Africa and tropical countries such as Brazil. It is undeniable that those coincidences may lead to the occurrence of coinfections. However, there are no studies focused on the interaction between Cryptococcus spp. and Strongyloides spp. In this work, we aimed to investigate the interaction between Strongyloides venezuelensis (Sv) and Cryptococcus gattii (Cg) in a murine coinfection model. Murine macrophage exposure to Sv antigens reduced their ability to engulf Cg and produce reactive oxygen species, increasing the ability of fungal growth intracellularly. We then infected mice with both pathogens. Sv infection skewed the host's response to fungal infection, increasing lethality in a murine coinfection model. In addition to increased NO levels and arginase activity, coinfected mice presented a classic Th2 anti-Sv response: eosinophilia, higher levels of alternate activated macrophages (M2), increased concentrations of CCL24 and IL-4, and lower levels of IL-1β. This milieu favored fungal growth in the lungs with prominent translocation to the brain, increasing the host's tissue damage. In conclusion, our data shows that primary Sv infection promotes Th2 bias of the pulmonary response to Cg-infection and worsens its pathological outcomes.
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Affiliation(s)
- Ludmila Gouveia-Eufrasio
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
| | - Gustavo José Cota de Freitas
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
| | - Marliete Carvalho Costa
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
| | - Eluzia Castro Peres-Emidio
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
| | - Paulo Henrique Fonseca Carmo
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
| | - João Gustavo Mendes Rodrigues
- Departamento de Parasitologia, Laboratório de Esquistossomose, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.A.N.-C.)
| | - Michelle Carvalho de Rezende
- Departamento de Parasitologia, Laboratório de Esquistossomose, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.A.N.-C.)
| | - Vanessa Fernandes Rodrigues
- Departamento de Parasitologia, Laboratório de Esquistossomose, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.A.N.-C.)
| | - Camila Bernardo de Brito
- Departamento de Microbiologia, Laboratório de Interação Microrganismo-Hospedeiro, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.d.G.d.S.); (C.T.F.)
| | - Guilherme Silva Miranda
- Departamento de Parasitologia, Laboratório de Esquistossomose, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.A.N.-C.)
| | - Pâmela Aparecida de Lima
- Departamento de Patologia, Laboratório de Patologia Celular e Molecular, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (T.A.d.P.)
| | - Lívia Mara Vitorino da Silva
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
| | - Jefferson Bruno Soares Oliveira
- Departamento de Patologia, Laboratório de Patologia Celular e Molecular, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (T.A.d.P.)
| | - Tatiane Alves da Paixão
- Departamento de Patologia, Laboratório de Patologia Celular e Molecular, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (T.A.d.P.)
| | - Daniele da Glória de Souza
- Departamento de Microbiologia, Laboratório de Interação Microrganismo-Hospedeiro, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.d.G.d.S.); (C.T.F.)
| | - Caio Tavares Fagundes
- Departamento de Microbiologia, Laboratório de Interação Microrganismo-Hospedeiro, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.d.G.d.S.); (C.T.F.)
| | - Nalu Teixeira de Aguiar Peres
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
| | - Deborah Aparecida Negrão-Correa
- Departamento de Parasitologia, Laboratório de Esquistossomose, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil (D.A.N.-C.)
| | - Daniel Assis Santos
- Departamento de Microbiologia, Laboratório de Micologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (L.G.-E.); (N.T.d.A.P.)
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de Brito CB, Ascenção FR, Arifa RDN, Lima RL, Menezes Garcia Z, Fagundes M, Resende BG, Bezerra RO, Queiroz-Junior CM, Dos Santos ACPM, Oliveira MAP, Teixeira MM, Fagundes CT, Souza DG. FcᵧRIIb protects from reperfusion injury by controlling antibody and type I IFN-mediated tissue injury and death. Immunol Suppl 2022; 167:428-442. [PMID: 35831251 DOI: 10.1111/imm.13547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 07/05/2022] [Indexed: 11/30/2022]
Abstract
Intestinal ischemia and reperfusion (I/R) is accompanied by an exacerbated inflammatory response characterized by deposition of IgG, release of inflammatory mediators, and intense neutrophil influx in the small intestine, resulting in severe tissue injury and death. We hypothesized that FcᵧRIIb activation by deposited IgG could inhibit tissue damage during I/R. Our results showed that I/R induction led to the deposition of IgG in intestinal tissue during the reperfusion phase. Death upon I/R occurred earlier and was more frequent in FcᵧRIIb-/- than WT mice. The higher lethality rate was associated with greater tissue injury and bacterial translocation to other organs. FcᵧRIIb-/- mice presented changes in the amount and repertoire of circulating IgG, leading to increased IgG deposition in intestinal tissue upon reperfusion in these mice. Depletion of intestinal microbiota prevented antibody deposition and tissue damage in FcᵧRIIb-/- mice submitted to I/R. We also observed increased production of ROS on neutrophils harvested from the intestines of FcᵧRIIb-/- mice submitted to I/R. In contrast, FcᵧRIII-/- mice presented reduced tissue damage and neutrophil influx after reperfusion injury, a phenotype reversed by FcᵧRIIb blockade. In addition, we observed reduced IFN-β expression in the intestines of FcᵧRIII-/- mice after I/R, a phenotype that was also reverted by blocking FcᵧRIIb. IFNAR-/- mice submitted to I/R presented reduced lethality and TNF release. Altogether our results demonstrate that antibody deposition triggers FcᵧRIIb to control IFN-β and IFNAR activation and subsequent TNF release, tailoring tissue damage, and death induced by reperfusion injury.
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Affiliation(s)
- Camila Bernardo de Brito
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fernando Roque Ascenção
- Centro de Pesquisa e Desenvolvimento de Fármacos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Raquel Duque Nascimento Arifa
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Renata Lacerda Lima
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Zélia Menezes Garcia
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Micheli Fagundes
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,Centro de Pesquisa e Desenvolvimento de Fármacos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Brenda Gonçalves Resende
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rafael Oliveira Bezerra
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Celso Martins Queiroz-Junior
- Centro de Pesquisa e Desenvolvimento de Fármacos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Anna Clara Paiva Menezes Dos Santos
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Milton A P Oliveira
- Department of Microbiology, Immunology, Parasitology and Pathology, Tropical Pathology and Public Health Institute, Federal University of Goiás, Goiania, Goiás, Brazil
| | - Mauro Martins Teixeira
- Centro de Pesquisa e Desenvolvimento de Fármacos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Caio Tavares Fagundes
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,Centro de Pesquisa e Desenvolvimento de Fármacos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniele G Souza
- Laboratório de Interação Microrganismo-Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Ávila TV, Menezes-Garcia Z, do Nascimento Arifa RD, Soriani FM, Machado ADMV, Teixeira MM, Fagundes CT, Souza DG. Mitochondrial DNA as a Possible Ligand for TLR9 in Irinotecan-induced Small Intestinal Mucositis. Immunol Invest 2022; 51:1756-1771. [PMID: 35152824 DOI: 10.1080/08820139.2022.2026379] [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: 01/17/2023]
Abstract
Cancer chemotherapy and radiotherapy may result in mucositis characterized by stem cell damage and inflammation in the gastrointestinal tract. The molecular mechanisms underlying this pathology remain unknown. Based on the assumption that mitochondrial CPG-DNA (mtDNA) released and sensed by TLR9 could underlie mucositis pathology, we analyzed the mtDNA levels in sera as well as inflammatory and disease parameters in the small intestine from wild-type (WT) and TLR9-deficient mice (TLR9-/-) in an experimental model of intestinal mucositis induced by irinotecan. Additionally, we verified the ability of WT and TLR9-/- macrophages to respond to CpG-DNA in vitro. WT mice injected with irinotecan presented a progressive increase in mtDNA in the serum along with increased hematocrit, shortening of small intestine length, reduction of intestinal villus:crypt ratio and increased influx of neutrophils, which were followed by higher expression of Nlrp3 and Casp1 mRNA and increased IL-1β levels in the ileum when compared to vehicle-injected mice. TLR9-deficient mice were protected in all these parameters when compared to WT mice. Furthermore, TLR9 was required for the production of IL-1β and NO after macrophage stimulation with CpG-DNA. Overall, our findings show that the amount of circulating free CpG-DNA is increased upon chemotherapy and that TLR9 activation is important for NLRP3 inflammasome transcription and further IL-1β release, playing a central role in the development of irinotecan-induced intestinal mucositis. We suggest that TLR9 antagonism may be a new therapeutic strategy for limiting irinotecan-induced intestinal inflammation.
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Affiliation(s)
- Thiago Vinicius Ávila
- Department of Pharmacology, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
| | - Zélia Menezes-Garcia
- Department of Microbiology and Biochemistry, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Raquel Duque do Nascimento Arifa
- Laboratório de Interação Microorganismo-Hospedeiro, Department de Microbiology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Caio Tavares Fagundes
- Laboratório de Interação Microorganismo-Hospedeiro, Department de Microbiology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Daniele G Souza
- Laboratório de Interação Microorganismo-Hospedeiro, Department de Microbiology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Baltazar LM, Ribeiro GF, Freitas GJ, Queiroz-Junior CM, Fagundes CT, Chaves-Olórtegui C, Teixeira MM, Souza DG. Protective Response in Experimental Paracoccidioidomycosis Elicited by Extracellular Vesicles Containing Antigens of Paracoccidioides brasiliensis. Cells 2021; 10:1813. [PMID: 34359982 PMCID: PMC8304155 DOI: 10.3390/cells10071813] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 07/10/2021] [Accepted: 07/13/2021] [Indexed: 01/22/2023] Open
Abstract
Paracoccidioidomycosis (PCM) is a systemic disease caused by Paracoccidioides spp. PCM is endemic in Latin America and most cases are registered in Brazil. This mycosis affects mainly the lungs, but can also spread to other tissues and organs, including the liver. Several approaches have been investigated to improve treatment effectiveness and protection against the disease. Extracellular vesicles (EVs) are good antigen delivery vehicles. The present work aims to investigate the use of EVs derived from Paracoccidioides brasiliensis as an immunization tool in a murine model of PCM. For this, male C57BL/6 were immunized with two doses of EVs plus adjuvant and then infected with P. brasiliensis. EV immunization induced IgM and IgG in vivo and cytokine production by splenocytes ex vivo. Further, immunization with EVs had a positive effect on mice infected with P. brasiliensis, as it induced activated T lymphocytes and NKT cell mobilization to the infected lungs, improved production of proinflammatory cytokines and the histopathological profile, and reduced fungal burden. Therefore, the present study shows a new role for P. brasiliensis EVs in the presence of adjuvant as modulators of the host immune system, suggesting their utility as immunizing agents.
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Affiliation(s)
- Ludmila Matos Baltazar
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil; (L.M.B.); (G.F.R.); (C.T.F.)
| | - Gabriela Fior Ribeiro
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil; (L.M.B.); (G.F.R.); (C.T.F.)
| | - Gustavo J. Freitas
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil;
| | - Celso Martins Queiroz-Junior
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil;
| | - Caio Tavares Fagundes
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil; (L.M.B.); (G.F.R.); (C.T.F.)
| | - Carlos Chaves-Olórtegui
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil; (C.C.-O.); (M.M.T.)
| | - Mauro Martins Teixeira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil; (C.C.-O.); (M.M.T.)
| | - Daniele G. Souza
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627, Antonio Carlos Ave, Belo Horizonte, Minas Gerais 31270-901, Brazil; (L.M.B.); (G.F.R.); (C.T.F.)
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Arifa RDN, de Paula TP, Lima RL, Brito CB, Andrade MER, Cardoso VN, Pinheiro MVB, Ladeira LO, Krambrock K, Teixeira MM, Fagundes CT, Souza DG. Anti-inflammatory and antioxidant effects of the nanocomposite Fullerol decrease the severity of intestinal inflammation induced by gut ischemia and reperfusion. Eur J Pharmacol 2021; 898:173984. [PMID: 33647256 DOI: 10.1016/j.ejphar.2021.173984] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 02/15/2021] [Accepted: 02/23/2021] [Indexed: 12/12/2022]
Abstract
Intestinal ischemia is a vascular emergency that arises when blood flow to the intestine is compromised. Reperfusion is necessary to restore intestinal function but might lead to local and systemic inflammatory responses and bacterial translocation, with consequent multiple organ dysfunction syndrome (MODS). During reperfusion occurs production of reactive oxygen species. These species contribute to intestinal injury through direct toxicity or activation of inflammatory pathways. Fullerol is a nanacomposite which has been shown to act as reactive oxygen species and reactive nitrogen species (RNS) scavengers. Thus, our aim was to evaluate whether Fullerol confer anti-inflammatory activity during intestinal ischemia and reperfusion (IIR). Intestinal ischemia was induced by total occlusion of the superior mesenteric artery. Groups were treated with vehicle or Fullerol 10 min before reperfusion. Mice were euthanized after 6 h of reperfusion, and small intestines were collected for evaluation of plasma extravasation, leukocyte influx, cytokine production and histological damage. Bacterial translocation to the peritoneal cavity and reactive oxygen and nitrogen species production by lamina propria cells were also evaluated. Our results showed that treatment with Fullerol inhibited bacterial translocation to the peritoneal cavity, delayed and decreased the lethality rates and diminished neutrophil influx and intestinal injury induced by IIR. Reduced severity of reperfusion injury in Fullerol-treated mice was associated with blunted reactive oxygen and nitrogen species production in leukocytes isolated from gut lamina propria and decreased production of pro-inflammatory mediators. Thus, the present study shows that Fullerol is a potential therapy to treat inflammatory bowel disorders associated with bacterial translocation, such as IIR.
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Affiliation(s)
| | - Talles Prosperi de Paula
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Belo Horizonte, MG, Brazil
| | - Renata Lacerda Lima
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Belo Horizonte, MG, Brazil
| | - Camila Bernardo Brito
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Belo Horizonte, MG, Brazil
| | | | | | | | - Luiz Orlando Ladeira
- Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Klaus Krambrock
- Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Mauro Martins Teixeira
- Laboratório de Imunofarmacologia, Departamento de Bioquímica e Imunologia, Belo Horizonte, MG, Brazil; Centro de Pesquisa e Desenvolvimento de Fármacos, Instituto de Ciências Biológicas, Belo Horizonte, MG, Brazil
| | - Caio Tavares Fagundes
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Belo Horizonte, MG, Brazil; Centro de Pesquisa e Desenvolvimento de Fármacos, Instituto de Ciências Biológicas, Belo Horizonte, MG, Brazil
| | - Daniele Gloria Souza
- Laboratório de Interação Microrganismo Hospedeiro, Departamento de Microbiologia, Belo Horizonte, MG, Brazil.
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Amaral FA, Fagundes CT, Miranda AS, Costa VV, Resende L, Gloria de Souza DD, Prado VF, Teixeira MM, Maximo Prado MA, Teixeira AL. Endogenous Acetylcholine Controls the Severity of Polymicrobial Sepsisassociated Inflammatory Response in Mice. Curr Neurovasc Res 2016; 13:4-9. [PMID: 26500102 DOI: 10.2174/1567202612666151026105915] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 10/03/2015] [Accepted: 10/09/2015] [Indexed: 11/22/2022]
Abstract
Acetylcholine (ACh) is the main mediator associated with the anti-inflammatory cholinergic pathway. ACh plays an inhibitory role in several inflammatory conditions. Sepsis is a severe clinical syndrome characterized by bacterial dissemination and overproduction of inflammatory mediators. The aim of the current study was to investigate the participation of endogenous ACh in the modulation of inflammatory response induced by a model of polymicrobial sepsis. Wild type (WT) and vesicular acetylcholine transporter knockdown (VAChT(KD)) mice were exposed to cecal ligation and perforation- induced sepsis. Levels of Tumor Necrosis Factor Alpha (TNF-α) and bacterial growth in peritoneal cavity and serum, and neutrophil recruitment into peritoneal cavity were assessed. The concentration of TNF-α in both compartments was higher in VAChT(KD) in comparison with WT mice. VAChT(KD) mice presented elevated burden of bacteria in peritoneum and blood, and impairment of neutrophil migration to peritoneal cavity. This phenotype was reversed by treatment with nicotine salt. These findings suggest that endogenous ACh plays a major role in the control of sepsis-associated inflammatory response.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Antonio Lucio Teixeira
- Laboratório Interdisciplinar de Investigação Médica, Room 281, Faculdade de Medicina, UFMG. Av. Alfredo Balena, 190. Santa Efigênia, Belo Horizonte, Brasil. 30130-100.
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Lima CX, Souza DG, Amaral FA, Fagundes CT, Rodrigues IPS, Alves-Filho JC, Kosco-Vilbois M, Ferlin W, Shang L, Elson G, Teixeira MM. Therapeutic Effects of Treatment with Anti-TLR2 and Anti-TLR4 Monoclonal Antibodies in Polymicrobial Sepsis. PLoS One 2015; 10:e0132336. [PMID: 26147469 PMCID: PMC4492955 DOI: 10.1371/journal.pone.0132336] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 06/14/2015] [Indexed: 12/27/2022] Open
Abstract
Introduction Toll-like receptors (TLRs) play an important role in the recognition of microbial products and in host defense against infection. However, the massive release of inflammatory mediators into the bloodstream following TLR activation following sepsis is thought to contribute to disease pathogenesis. Methods Here, we evaluated the effects of preventive or therapeutic administration of monoclonal antibodies (mAbs) targeting either TLR2 or TLR4 in a model of severe polymicrobial sepsis induced by cecal ligation and puncture in mice. Results Pre-treatment with anti-TLR2 or anti-TLR4 mAb alone showed significant protection from sepsis-associated death. Protective effects were observed even when the administration of either anti-TLR2 or anti-TLR4 alone was delayed (i.e., 3 h after sepsis induction). Delayed administration of either mAb in combination with antibiotics resulted in additive protection. Conclusion Although attempts to translate preclinical findings to clinical sepsis have failed so far, our preclinical experiments strongly suggest that there is a sufficient therapeutic window within which patients with ongoing sepsis could benefit from combined antibiotic plus anti-TLR2 or anti-TLR4 mAb treatment.
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Affiliation(s)
- Cristiano Xavier Lima
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, sala 203, 30130–100, Belo Horizonte, MG, Brasil
- * E-mail:
| | - Danielle Gloria Souza
- Instituto de Ciências Biologicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, 31270–901, Belo Horizonte, MG, Brasil
| | - Flavio Almeida Amaral
- Instituto de Ciências Biologicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, 31270–901, Belo Horizonte, MG, Brasil
| | - Caio Tavares Fagundes
- Instituto de Ciências Biologicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, 31270–901, Belo Horizonte, MG, Brasil
| | - Irla Paula Stopa Rodrigues
- Instituto de Ciências Biologicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, 31270–901, Belo Horizonte, MG, Brasil
| | - Jose Carlos Alves-Filho
- Faculdade de Medicina de Ribeirão Preto, USP Avenida dos Bandeirantes, 3.900, Monte Alegre, 14049–900, Ribeirão Preto, SP, Brasil
| | - Marie Kosco-Vilbois
- NovImmune SA, 14 Chemin des Aulx, 1228 Plan-Les-Ouates, Geneva, CH1228, Switzerland
| | - Walter Ferlin
- NovImmune SA, 14 Chemin des Aulx, 1228 Plan-Les-Ouates, Geneva, CH1228, Switzerland
| | - Limin Shang
- NovImmune SA, 14 Chemin des Aulx, 1228 Plan-Les-Ouates, Geneva, CH1228, Switzerland
| | - Greg Elson
- NovImmune SA, 14 Chemin des Aulx, 1228 Plan-Les-Ouates, Geneva, CH1228, Switzerland
| | - Mauro Martins Teixeira
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, sala 203, 30130–100, Belo Horizonte, MG, Brasil
- Instituto de Ciências Biologicas, Universidade Federal de Minas Gerais, Av. Presidente Antônio Carlos 6627, 31270–901, Belo Horizonte, MG, Brasil
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Barbosa IG, Nogueira CRC, Rocha NP, Queiroz ALL, Vago JP, Tavares LP, Assis F, Fagundes CT, Huguet RB, Bauer ME, Teixeira AL, de Sousa LP. Altered intracellular signaling cascades in peripheral blood mononuclear cells from BD patients. J Psychiatr Res 2013; 47:1949-54. [PMID: 24075327 DOI: 10.1016/j.jpsychires.2013.08.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 08/23/2013] [Accepted: 08/26/2013] [Indexed: 01/17/2023]
Abstract
Bipolar disorder (BD) is a severe psychiatric disorder of complex physiopathology that has been associated with a pro-inflammatory state. The aim of the present study was to investigate intracellular pathways associated with inflammatory signaling, assessing the phosphorylation levels of transcription factor nuclear factor kappa B (NF-κB) and mitogen-activated protein kinase (MAPKs) in peripheral blood mononuclear cells of euthymic BD patients and healthy controls. Fifteen BD euthymic type I patients, and 12 healthy controls matched by age and gender were enrolled in this study. All subjects were assessed by the Mini-International Neuropsychiatry Interview and the patients also by the Young Mania Rating Scale and the Hamilton Depression Rating Scale. Phosphorylation levels of p65 NF-κB subunit, and MAPK ERK1/2, and p38 were assessed by Western blot and flow cytometry. Plasma cytokines (IL-2, IL-4, IL6, IL-10, IFN-γ, TNF-α, and IL-17A) were measured using cytometric bead arrays. Western blot and flow cytometry analyses showed increased phosphorylation levels of p65 NF-κB subunit, and MAPKs ERK1/2, and p38 in BD patients in euthymia in comparison with controls. BD patients presented increased pro-inflammatory cytokines levels in comparison with controls, and TNF-α correlated with the levels of phosphorylated p65 NF-κB. The present study found increased activation of MAPK and NF-κB pathways in BD patients, which is in line with a pro-inflammatory status.
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Affiliation(s)
- Izabela Guimarães Barbosa
- Programa de Pós Graduação em Neurociências, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Laboratório Interdisciplinar de Investigação Médica (LIIM), Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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9
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Santos PC, Santos DA, Ribeiro LS, Fagundes CT, de Paula TP, Avila TV, Baltazar LDM, Madeira MM, Cruz RDC, Dias ACF, Machado FS, Teixeira MM, Cisalpino PS, Souza DG. The pivotal role of 5-lipoxygenase-derived LTB4 in controlling pulmonary paracoccidioidomycosis. PLoS Negl Trop Dis 2013; 7:e2390. [PMID: 23991239 PMCID: PMC3749973 DOI: 10.1371/journal.pntd.0002390] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 07/17/2013] [Indexed: 01/30/2023] Open
Abstract
Leukotrienes (LTs) produced from arachidonic acid by the action of 5-lipoxygenase (5-LO) are classical mediators of inflammatory responses. However, studies published in the literature regarding these mediators are contradictory and it remains uncertain whether these lipid mediators play a role in host defense against the fungal pathogen Paracoccidioides brasiliensis. To determine the involvement of LTs in the host response to pulmonary infection, wild-type and LT-deficient mice by targeted disruption of the 5-lipoxygenase gene (knockout mice) were studied following intratracheal challenge with P. brasiliensis yeasts. The results showed that infection is uniformly fatal in 5-LO-deficient mice and the mechanisms that account for this phenotype are an exacerbated lung injury and higher fungal pulmonary burden. Genetic ablation or pharmacological inhibition of LTs resulted in lower phagocytosis and fungicidal activity of macrophages in vitro, suggesting that deficiency in fungal clearance seems to be secondary to the absence of activation in 5-LO(-/-) macrophages. Exogenous LTB4 restored phagocytosis and fungicidal activity of 5-LO(-/-) macrophages. Moreover, P. brasiliensis killing promoted by LTB4 was dependent on nitric oxide (NO) production by macrophages. Taken together, these results reveal a fundamental role for 5-LO-derived LTB4 in the protective response to P. brasiliensis infection and identify relevant mechanisms for the control of fungal infection during the early stages of the host immune response.
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Affiliation(s)
- Patrícia Campi Santos
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Daniel Assis Santos
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Lucas Secchim Ribeiro
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Caio Tavares Fagundes
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Inflammation Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Talles Prosperi de Paula
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Thiago Vinícius Avila
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Ludmila de Matos Baltazar
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Mila Moreira Madeira
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Rosana de Carvalho Cruz
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Ana Carolina Fialho Dias
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Fabiana Simão Machado
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Mauro Martins Teixeira
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Patrícia Silva Cisalpino
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
| | - Danielle G. Souza
- Laboratory of Microorganism-Host Interaction, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- Laboratory of Immunopharmacology/Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Minas Gerais, Brazil
- * E-mail:
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10
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Costa VV, Fagundes CT, Souza DG, Teixeira MM. Inflammatory and innate immune responses in dengue infection: protection versus disease induction. Am J Pathol 2013; 182:1950-61. [PMID: 23567637 DOI: 10.1016/j.ajpath.2013.02.027] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 02/01/2013] [Accepted: 02/05/2013] [Indexed: 01/28/2023]
Abstract
Dengue disease is a mosquito-borne viral disease of expanding geographical range and incidence. Infection by one of the four serotypes of dengue virus induces a spectrum of disease manifestations, ranging from asymptomatic to life-threatening Dengue hemorrhagic fever/dengue shock syndrome. Many efforts have been made to elucidate several aspects of dengue virus-induced disease, but the pathogenesis of disease is complex and remains unclear. Understanding the mechanisms involved in the early stages of infection is crucial to determine and develop safe therapeutics to prevent the severe outcomes of disease without interfering with control of infection. In this review, we discuss the dual role of the innate and inflammatory pathways activated during dengue disease in mediating both protection and exacerbation of disease. We show that some mediators involved in each of these responses differ substantially, suggesting that interfering in disease-associated immune pathways may represent a potential therapeutic opportunity for the treatment of severe dengue.
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Affiliation(s)
- Vivian Vasconcelos Costa
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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11
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Rodrigues DH, Lacerda-Queiroz N, de Miranda AS, Fagundes CT, Campos RDDL, Arantes RE, Vilela MDC, Rachid MA, Teixeira MM, Teixeira AL. Absence of PAF receptor alters cellular infiltrate but not rolling and adhesion of leukocytes in experimental autoimmune encephalomyelitis. Brain Res 2011; 1385:298-306. [PMID: 21338585 DOI: 10.1016/j.brainres.2011.02.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 02/06/2011] [Accepted: 02/14/2011] [Indexed: 11/24/2022]
Abstract
Experimental autoimmune encephalomyelitis (EAE) is a condition induced in some susceptible species to the study of multiple sclerosis (MS). The platelet activating factor (PAF) is an important mediator of immune responses and seems to be involved in MS. However, the participation of PAF in EAE and MS remains controversial. Thus, in this study, we aimed to evaluate the role of PAF receptor in the pathogenesis of EAE. EAE was induced using an emulsion containing MOG(35-55). EAE-induced PAF receptor knock out (PAFR(-/-)) mice presented milder disease when compared to C57BL/6 wild type (WT) animals. PAFR(-/-) animals had lower inflammatory infiltrates in central nervous system (CNS) tissue when compared to WT mice. However, intravital microscopy in cerebral microvasculature revealed similar levels of rolling and adhering leukocytes in both WT and PAFR(-/-) mice. Interleukine (IL)-17 and chemokines C-C motif legends (CCL)2 and CCL5 were significantly lower in PAFR(-/-) mice when compared to WT mice. Brain infiltrating cluster of differentiation (CD)4(+) leukocytes and IL-17(+) leukocytes was diminished in PAFR(-/-) when compared to WT mice. Taken together, our results suggest that PAF receptor is important in the induction and development of EAE, although it has no influence in rolling and adhesion steps of cell recruitment. The absence of PAF receptor results in milder disease by altering the type of inflammatory mediators and cells that are present in CNS tissue.
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