1
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Tavares ER, de Lima TF, Bartolomeu-Gonçalves G, de Castro IM, de Lima DG, Borges PHG, Nakazato G, Kobayashi RKT, Venancio EJ, Tarley CRT, de Almeida ERD, Pelisson M, Vespero EC, Simão ANC, Perugini MRE, Kerbauy G, Fornazieri MA, Tognim MCB, Góes VM, de Souza TDACB, Oliveira DBL, Durigon EL, Faccin-Galhardi LC, Yamauchi LM, Yamada-Ogatta SF. Development of a Melting-Curve-Based Multiplex Real-Time PCR Assay for the Simultaneous Detection of Viruses Causing Respiratory Infection. Microorganisms 2023; 11:2692. [PMID: 38004704 PMCID: PMC10672821 DOI: 10.3390/microorganisms11112692] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 09/25/2023] [Revised: 10/19/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
The prompt and accurate identification of the etiological agents of viral respiratory infections is a critical measure in mitigating outbreaks. In this study, we developed and clinically evaluated a novel melting-curve-based multiplex real-time PCR (M-m-qPCR) assay targeting the RNA-dependent RNA polymerase (RdRp) and nucleocapsid phosphoprotein N of SARS-CoV-2, the Matrix protein 2 of the Influenza A virus, the RdRp domain of the L protein from the Human Respiratory Syncytial Virus, and the polyprotein from Rhinovirus B genes. The analytical performance of the M-m-qPCR underwent assessment using in silico analysis and a panel of reference and clinical strains, encompassing viral, bacterial, and fungal pathogens, exhibiting 100% specificity. Moreover, the assay showed a detection limit of 10 copies per reaction for all targeted pathogens using the positive controls. To validate its applicability, the assay was further tested in simulated nasal fluid spiked with the viruses mentioned above, followed by validation on nasopharyngeal swabs collected from 811 individuals. Among them, 13.4% (109/811) tested positive for SARS-CoV-2, and 1.1% (9/811) tested positive for Influenza A. Notably, these results showed 100% concordance with those obtained using a commercial kit. Therefore, the M-m-qPCR exhibits great potential for the routine screening of these respiratory viral pathogens.
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Affiliation(s)
- Eliandro Reis Tavares
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (E.R.T.); (D.G.d.L.)
| | - Thiago Ferreira de Lima
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
| | - Guilherme Bartolomeu-Gonçalves
- Graduate Program in Clinical and Laboratory Pathophysiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Londrina 86038-350, Brazil; (G.B.-G.); (E.J.V.); (M.P.); (E.C.V.); (A.N.C.S.); (M.R.E.P.)
| | - Isabela Madeira de Castro
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
| | - Daniel Gaiotto de Lima
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (E.R.T.); (D.G.d.L.)
| | - Paulo Henrique Guilherme Borges
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
| | - Gerson Nakazato
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
| | - Renata Katsuko Takayama Kobayashi
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
| | - Emerson José Venancio
- Graduate Program in Clinical and Laboratory Pathophysiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Londrina 86038-350, Brazil; (G.B.-G.); (E.J.V.); (M.P.); (E.C.V.); (A.N.C.S.); (M.R.E.P.)
| | | | | | - Marsileni Pelisson
- Graduate Program in Clinical and Laboratory Pathophysiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Londrina 86038-350, Brazil; (G.B.-G.); (E.J.V.); (M.P.); (E.C.V.); (A.N.C.S.); (M.R.E.P.)
| | - Eliana Carolina Vespero
- Graduate Program in Clinical and Laboratory Pathophysiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Londrina 86038-350, Brazil; (G.B.-G.); (E.J.V.); (M.P.); (E.C.V.); (A.N.C.S.); (M.R.E.P.)
| | - Andrea Name Colado Simão
- Graduate Program in Clinical and Laboratory Pathophysiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Londrina 86038-350, Brazil; (G.B.-G.); (E.J.V.); (M.P.); (E.C.V.); (A.N.C.S.); (M.R.E.P.)
| | - Márcia Regina Eches Perugini
- Graduate Program in Clinical and Laboratory Pathophysiology, Department of Pathology, Clinical and Toxicological Analysis, State University of Londrina, Londrina 86038-350, Brazil; (G.B.-G.); (E.J.V.); (M.P.); (E.C.V.); (A.N.C.S.); (M.R.E.P.)
| | - Gilselena Kerbauy
- Graduate Program in Nursing, Department of Nursing, State University of Londrina, Londrina 86038-350, Brazil;
| | - Marco Aurélio Fornazieri
- Graduate Program in Health Sciences, Department of Clinical Surgery, State University of Londrina, Londrina 86038-350, Brazil;
| | | | | | | | - Danielle Bruna Leal Oliveira
- Albert Einstein Hospital, São Paulo 05652-900, Brazil;
- Laboratory of Clinical and Molecular Virology, University of São Paulo, São Paulo 05508-000, Brazil;
| | - Edison Luiz Durigon
- Laboratory of Clinical and Molecular Virology, University of São Paulo, São Paulo 05508-000, Brazil;
| | - Lígia Carla Faccin-Galhardi
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
| | - Lucy Megumi Yamauchi
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (E.R.T.); (D.G.d.L.)
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
| | - Sueli Fumie Yamada-Ogatta
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (E.R.T.); (D.G.d.L.)
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (T.F.d.L.); (I.M.d.C.); (P.H.G.B.); (G.N.); (R.K.T.K.); (L.C.F.-G.)
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2
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Hideko Tatakihara VL, Malvezi AD, Pereira RS, Lucchetti BFC, Dos Santos LF, Cecchini R, Yamauchi LM, Yamada-Ogatta SF, Miranda KM, Verri WA, Martins-Pinge MC, Pinge-Filho P. The Therapeutic Potential of Angeli's Salt in Mitigating Acute Trypanosoma cruzi Infection in Mice. Pathogens 2023; 12:1063. [PMID: 37624023 PMCID: PMC10458646 DOI: 10.3390/pathogens12081063] [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: 06/20/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023] Open
Abstract
Chagas disease (CD), caused by Trypanosoma cruzi, is a neglected tropical disease prevalent in Latin America. Infected patients are treated to eliminate the parasite, reduce the cardiomyopathy risk, and interrupt the disease transmission cycle. The World Health Organization recognizes benznidazole (BZ) and nifurtimox as effective drugs for CD treatment. In the chronic phase, both drugs have low cure rates and serious side effects. T. cruzi infection causes intense tissue inflammation that controls parasite proliferation and CD evolution. Compounds that liberate nitric oxide (NO) (NO donors) have been used as anti-T. cruzi therapeutics. Currently, there is no evidence that nitroxyl (HNO) affects T. cruzi infection outcomes. This study investigated the effects of the HNO donor Angeli's salt (AS) on C57BL/6 mice infected with T. cruzi (Y strain, 5 × 103 trypomastigotes, intraperitoneally). AS reduced the number of parasites in the bloodstream and heart nests and increased the protective antioxidant capacity of erythrocytes in infected animals, reducing disease severity. Furthermore, in vitro experiments showed that AS treatment reduced parasite uptake and trypomastigote release by macrophages. Taken together, these findings from the murine model and in vitro testing suggest that AS could be a promising therapy for CD.
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Affiliation(s)
- Vera Lúcia Hideko Tatakihara
- Laboratório de Imunopatologia Experimental, Departamento de Imunologia, Parasitologia e Patologia Geral, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil (L.F.D.S.)
| | - Aparecida Donizette Malvezi
- Laboratório de Imunopatologia Experimental, Departamento de Imunologia, Parasitologia e Patologia Geral, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil (L.F.D.S.)
| | - Rito Santo Pereira
- Laboratório de Imunopatologia Experimental, Departamento de Imunologia, Parasitologia e Patologia Geral, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil (L.F.D.S.)
| | - Bruno Fernando Cruz Lucchetti
- Laboratório de Fisiologia e Fisiopatologia Cardiovascular, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil
- Departamento de Fisioterapia, Centro Universitário do Vale do Araguaia, Barra do Garças 78603-209, Mato Grosso, Brazil
| | - Lucas Felipe Dos Santos
- Laboratório de Imunopatologia Experimental, Departamento de Imunologia, Parasitologia e Patologia Geral, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil (L.F.D.S.)
| | - Rubens Cecchini
- Laboratório de Fisiopatologia e Radicais Livres, Departamento de Imunologia, Parasitologia e Patologia Geral, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil
| | - Katrina M. Miranda
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, AZ 85721, USA
| | - Waldiceu A. Verri
- Laboratório de Pesquisa em Dor, Inflamação, Neuropatia e Câncer, Departamento de Imunologia, Parasitologia e Patologia Geral, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil
| | - Marli Cardoso Martins-Pinge
- Departamento de Fisioterapia, Centro Universitário do Vale do Araguaia, Barra do Garças 78603-209, Mato Grosso, Brazil
| | - Phileno Pinge-Filho
- Laboratório de Imunopatologia Experimental, Departamento de Imunologia, Parasitologia e Patologia Geral, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, Paraná, Brazil (L.F.D.S.)
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3
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Pereira PML, Fernandes BT, dos Santos VR, Cabral WRC, Lovo-Martins MI, Alonso L, Lancheros CAC, de Paula JC, Camargo PG, Suzukawa HT, Alonso A, Macedo F, Nakamura CV, Tavares ER, de Lima Ferreira Bispo M, Yamauchi LM, Pinge-Filho P, Yamada-Ogatta SF. Antiprotozoal Activity of Benzoylthiourea Derivatives against Trypanosoma cruzi: Insights into Mechanism of Action. Pathogens 2023; 12:1012. [PMID: 37623972 PMCID: PMC10457850 DOI: 10.3390/pathogens12081012] [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: 06/30/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023] Open
Abstract
For decades, only two nitroheterocyclic drugs have been used as therapeutic agents for Chagas disease. However, these drugs present limited effectiveness during the chronic phase, possess unfavorable pharmacokinetic properties, and induce severe adverse effects, resulting in low treatment adherence. A previous study reported that N-(cyclohexylcarbamothioyl) benzamide (BTU-1), N-(tert-butylcarbamothioyl) benzamide (BTU-2), and (4-bromo-N-(3-nitrophenyl) carbamothioyl benzamide (BTU-3) present selective antiprotozoal activity against all developmental forms of Trypanosoma cruzi Y strain. In this study, we investigated the mechanism of action of these compounds through microscopy and biochemical analyses. Transmission electron microscopy analysis showed nuclear disorganization, changes in the plasma membrane with the appearance of blebs and extracellular arrangements, intense vacuolization, mitochondrial swelling, and formation of myelin-like structures. Biochemical results showed changes in the mitochondrial membrane potential, reactive oxygen species content, lipid peroxidation, and plasma membrane fluidity. In addition, the formation of autophagic vacuoles was observed. These findings indicate that BTU-1, BTU-2, and BTU-3 induced profound morphological, ultrastructural, and biochemical alterations in epimastigote forms, triggering an autophagic-dependent cell death pathway.
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Affiliation(s)
- Patrícia Morais Lopes Pereira
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (P.M.L.P.); (B.T.F.); (W.R.C.C.); (H.T.S.); (P.P.-F.)
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
| | - Bruna Terci Fernandes
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (P.M.L.P.); (B.T.F.); (W.R.C.C.); (H.T.S.); (P.P.-F.)
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
| | - Vitória Ribeiro dos Santos
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
| | - Weslei Roberto Correia Cabral
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (P.M.L.P.); (B.T.F.); (W.R.C.C.); (H.T.S.); (P.P.-F.)
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
| | - Maria Isabel Lovo-Martins
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, State University of Londrina, Londrina 86057-970, Brazil;
| | - Lais Alonso
- Institute of Physics, Federal University of Goiás, Goiania 74690-900, Brazil; (L.A.); (A.A.)
| | | | | | - Priscila Goes Camargo
- Laboratory of Medicinal Molecules Synthesis, Department of Chemistry, State University of Londrina, Londrina 86057-970, Brazil; (P.G.C.); (M.d.L.F.B.)
| | - Helena Tiemi Suzukawa
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (P.M.L.P.); (B.T.F.); (W.R.C.C.); (H.T.S.); (P.P.-F.)
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
| | - Antônio Alonso
- Institute of Physics, Federal University of Goiás, Goiania 74690-900, Brazil; (L.A.); (A.A.)
| | - Fernando Macedo
- Laboratory of Medicinal Molecules Synthesis, Department of Chemistry, State University of Londrina, Londrina 86057-970, Brazil; (P.G.C.); (M.d.L.F.B.)
| | - Celso Vataru Nakamura
- Laboratory of Technological Innovation in the Development of Drugs and Cosmetics, Department of Basic Health Sciences, State University of Maringá, Maringa 87020-900, Brazil;
| | - Eliandro Reis Tavares
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
| | - Marcelle de Lima Ferreira Bispo
- Laboratory of Medicinal Molecules Synthesis, Department of Chemistry, State University of Londrina, Londrina 86057-970, Brazil; (P.G.C.); (M.d.L.F.B.)
| | - Lucy Megumi Yamauchi
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (P.M.L.P.); (B.T.F.); (W.R.C.C.); (H.T.S.); (P.P.-F.)
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
| | - Phileno Pinge-Filho
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (P.M.L.P.); (B.T.F.); (W.R.C.C.); (H.T.S.); (P.P.-F.)
- Laboratory of Experimental Immunopathology, Department of Immunology, Parasitology and General Pathology, State University of Londrina, Londrina 86057-970, Brazil;
| | - Sueli Fumie Yamada-Ogatta
- Graduate Program in Microbiology, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (P.M.L.P.); (B.T.F.); (W.R.C.C.); (H.T.S.); (P.P.-F.)
- Laboratory of Molecular Biology of Microorganisms, Department of Microbiology, State University of Londrina, Londrina 86057-970, Brazil; (V.R.d.S.); (E.R.T.)
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Morguette AEB, Bartolomeu-Gonçalves G, Andriani GM, Bertoncini GES, Castro IMD, Spoladori LFDA, Bertão AMS, Tavares ER, Yamauchi LM, Yamada-Ogatta SF. The Antibacterial and Wound Healing Properties of Natural Products: A Review on Plant Species with Therapeutic Potential against Staphylococcus aureus Wound Infections. Plants (Basel) 2023; 12:plants12112147. [PMID: 37299127 DOI: 10.3390/plants12112147] [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] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/20/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023]
Abstract
Wounds of an acute or chronic etiology affect millions of people worldwide, with increasing prevalence every year. Microbial infections are one of the main causes that impair the wound healing process, and Staphylococcus aureus, a commensal member of the skin microbiota, is one of the main causative agents of wound infections. Crucially, a high proportion of these infections are caused by methicillin-resistant Staphylococcus aureus, which, in addition to β-lactams, has acquired resistance to almost all the antibacterial agents used to treat it, limiting therapeutic options. Studies on the antimicrobial and healing activities of extracts, essential oils, or metabolites obtained from native plants have been reported in many countries that have a diverse flora and traditions with the use of medicinal plants for the treatment of wound infections. Due to their great chemical diversity, plants have proven to be promising sources of bioactive molecules for the discovery and development of new drugs or strategies for the treatment of wounds. This review highlights the main herbal preparations that have antimicrobial and healing activities with potential for the treatment of wound infections caused by Staphylococcus aureus.
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Affiliation(s)
- Ana Elisa Belotto Morguette
- Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
| | - Guilherme Bartolomeu-Gonçalves
- Programa de Pós-Graduação em Fisiopatologia Clínica e Laboratorial, Universidade Estadual de Londrina, Londrina 86038-350, PR, Brazil
| | - Gabriella Maria Andriani
- Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
| | | | - Isabela Madeira de Castro
- Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
| | - Laís Fernanda de Almeida Spoladori
- Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
| | | | - Eliandro Reis Tavares
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
- Programa de Pós-Graduação em Fisiopatologia Clínica e Laboratorial, Universidade Estadual de Londrina, Londrina 86038-350, PR, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina 86057-970, PR, Brazil
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5
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Spoladori LFDA, Andriani GM, Castro IMD, Suzukawa HT, Gimenes ACR, Bartolomeu-Gonçalves G, Ishida K, Nakazato G, Pinge-Filho P, Machado RRB, Nakamura CV, Andrade G, Tavares ER, Yamauchi LM, Yamada-Ogatta SF. Synergistic Antifungal Interaction between Pseudomonas aeruginosa LV Strain Metabolites and Biogenic Silver Nanoparticles against Candida auris. Antibiotics (Basel) 2023; 12:antibiotics12050861. [PMID: 37237764 DOI: 10.3390/antibiotics12050861] [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: 03/30/2023] [Revised: 04/29/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Candida auris has been found to be a persistent colonizer of human skin and a successful pathogen capable of causing potentially fatal infection, especially in immunocompromised individuals. This fungal species is usually resistant to most antifungal agents and has the ability to form biofilms on different surfaces, representing a significant therapeutic challenge. Herein, the effect of metabolites of Pseudomonas aeruginosa LV strain, alone and combined with biologically synthesized silver nanoparticles (bioAgNP), was evaluated in planktonic and sessile (biofilm) cells of C. auris. First, the minimal inhibitory and fungicidal concentration values of 3.12 and 6.25 μg/mL, respectively, were determined for F4a, a semi-purified bacterial fraction. Fluopsin C and indolin-3-one seem to be the active components of F4a. Like the semi-purified fraction, they showed a time- and dose-dependent fungicidal activity. F4a and bioAgNP caused severe changes in the morphology and ultrastructure of fungal cells. F4a and indolin-3-one combined with bioAgNP exhibited synergistic fungicidal activity against planktonic cells. F4a, alone or combined with bioAgNP, also caused a significant decrease in the number of viable cells within the biofilms. No cytotoxicity to mammalian cells was detected for bacterial metabolites combined with bioAgNP at synergistic concentrations that presented antifungal activity. These results indicate the potential of F4a combined with bioAgNP as a new strategy for controlling C. auris infections.
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Affiliation(s)
| | - Gabriella Maria Andriani
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Isabela Madeira de Castro
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Helena Tiemi Suzukawa
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Ana Carolina Ramos Gimenes
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Guilherme Bartolomeu-Gonçalves
- Programa de Pós-Graduação em Fisiopatologia Clínica e Laboratorial, Universidade Estadual de Londrina, Londrina CEP 86038-350, Brazil
| | - Kelly Ishida
- Laboratório de Quimioterapia Antifúngica, Universidade de São Paulo, São Paulo CEP 05508-000, Brazil
| | - Gerson Nakazato
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
- Laboratório de Bacteriologia Básica e Aplicada, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Phileno Pinge-Filho
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
- Laboratório de Imunopatologia Experimental, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Rayanne Regina Beltrame Machado
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Universidade Estadual de Maringá, Maringá CEP 87020-900, Brazil
| | - Celso Vataru Nakamura
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Universidade Estadual de Maringá, Maringá CEP 87020-900, Brazil
| | - Galdino Andrade
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
- Laboratório de Ecologia Microbiana, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Eliandro Reis Tavares
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, Londrina CEP 86057-970, Brazil
- Programa de Pós-Graduação em Fisiopatologia Clínica e Laboratorial, Universidade Estadual de Londrina, Londrina CEP 86038-350, Brazil
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6
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da Silva RS, Duarte FC, Danelli T, Olak APS, Magalhães GLG, Pelisson M, Cardim SL, Gonçalves GB, Vespero EC, Tavares ER, Yamauchi LM, Perugini MRE, Yamada-Ogatta SF. High Prevalence of Panton-valentine Leukocidin-encoding Genes in Methicillin-resistant Staphylococcus aureus Isolated from Inpatients with Invasive Infections at a University Hospital in Southern Brazil. Infect Disord Drug Targets 2023; 23:37-45. [PMID: 36125822 DOI: 10.2174/1871526522666220823164600] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 06/13/2022] [Accepted: 06/30/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Staphylococcus aureus is a major cause of a wide diversity of infections in humans, and the expression of Panton-Valentine Leukocidin (PVL) has been associated with severe clinical syndromes. OBJECTIVES The present study aimed to investigate the prevalence of PVL-encoding genes in S. aureus isolated from clinical samples of inpatients with invasive infections in a teaching hospital in Southern Brazil. Furthermore, phenotypic and genotypic characteristics of bacterial isolates were analyzed. METHODS A total of 98 S. aureus isolates recovered from different body sites were characterized according to their antimicrobial susceptibility profile, methicillin-resistance and SCCmec typing, genetic relatedness and occurrence of virulence-encoding genes, such as icaA, lukS-PV/lukF-PV, and tst. RESULTS Sixty-eight (69.4%) isolates were classified as methicillin-resistant, and among them, four (5.9%) did not harbor the mecA gene. The mecA-harboring methicillin-resistant S. aureus (MRSA) isolates were grouped into SCCmec types I (6.3%), II (64.1%), III (6.3%), IV (15.6%), V (4.7%), and VI (1.6%). One isolate (1.6%) was classified as non-typeable (NT). Seventy isolates (71.4%) were classified as multidrug-resistant. The overall prevalence of virulence-encoding genes was as follows: icaA, 99.0%; tst, 27.5%; and lukS-PV/lukF-PV, 50.0%. The presence of tst gene was significantly higher (p < 0.001) in methicillin-susceptible S. aureus (MSSA) compared to MRSA isolates. CONCLUSION The present study reports a high prevalence of multidrug-resistant S. aureus harboring lukS-PV/lukF-PV and tst genes in invasive infections. The continuous monitoring of the antimicrobial susceptibility profile and virulence of S. aureus is an important measure for the control of infections caused by this bacterium.
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Affiliation(s)
- Raquel Soares da Silva
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Felipe Crepaldi Duarte
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Tiago Danelli
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Anna Paula Silva Olak
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Gerusa Luciana Gomes Magalhães
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Marsileni Pelisson
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Stefani Lino Cardim
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Guilherme Bartolomeu Gonçalves
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Eliana Carolina Vespero
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | | | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Programa de Pós-graduação em Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Marcia Regina Eches Perugini
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.,Departamento de Microbiologia, Programa de Pós-graduação em Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
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7
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Andriani GM, Spoladori LFDA, Fabris M, Camargo PG, Pereira PML, Santos JP, Bartolomeu-Gonçalves G, Alonso L, Lancheros CAC, Alonso A, Nakamura CV, Macedo F, Pinge-Filho P, Yamauchi LM, Bispo MDLF, Tavares ER, Yamada-Ogatta SF. Synergistic antifungal interaction of N-(butylcarbamothioyl) benzamide and amphotericin B against Cryptococcus neoformans. Front Microbiol 2023; 14:1040671. [PMID: 36960287 PMCID: PMC10028264 DOI: 10.3389/fmicb.2023.1040671] [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: 09/09/2022] [Accepted: 02/20/2023] [Indexed: 03/09/2023] Open
Abstract
Introduction Cryptococcus neoformans is one of the leading causes of invasive fungal infections worldwide. Cryptococcal meningoencephalitis is the main challenge of antifungal therapy due to high morbidity and mortality rates, especially in low- and middle-income countries. This can be partly attributed to the lack of specific diagnosis difficulty accessing treatment, antifungal resistance and antifungal toxicity. Methods In the present study, the effect of the synthetic thiourea derivative N-(butylcarbamothioyl) benzamide (BTU-01), alone and combined with amphotericin B (AmB), was evaluated in planktonic and sessile (biofilm) cells of C. neoformans. Results BTU-01 alone exhibited a fungistatic activity with minimal inhibitory concentrations (MICs) ranging from 31.25 to 62.5 μg/mL for planktonic cells; and sessile MICs ranging from 125.0 to 1000.0 μg/mL. BTU-01 caused a concentration-dependent inhibitory activity on cryptococcal urease and did not interfere with plasma membrane fluidity. Molecular docking was performed on Canavalia ensiformis urease, and BTU-01 showed relevant interactions with the enzyme. The combination of BTU-01 and AmB exhibited synergistic fungicidal activity against planktonic and sessile cells of C. neoformans. Microscopic analysis of C. neoformans treated with BTU-01, alone or combined with AmB, revealed a reduction in cell and capsule sizes, changes in the morphology of planktonic cells; a significant decrease in the number of cells within the biofilm; and absence of exopolymeric matrix surrounding the sessile cells. Neither hemolytic activity nor cytotoxicity to mammalian cells was detected for BTU-01, alone or combined with AmB, at concentrations that exhibited antifungal activity. BTU-01 also displayed drug-likeness properties. Conclusion These results indicate the potential of BTU-01, for the development of new strategies for controlling C. neoformans infections.
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Affiliation(s)
- Gabriella Maria Andriani
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lais Fernanda de Almeida Spoladori
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Marciéli Fabris
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Priscila Goes Camargo
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Patrícia Morais Lopes Pereira
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Jussevania Pereira Santos
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Guilherme Bartolomeu-Gonçalves
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Departamento de Patología, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lais Alonso
- Instituto de Física, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Cesar Armando Contreras Lancheros
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Antonio Alonso
- Instituto de Física, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Celso Vataru Nakamura
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Fernando Macedo
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Phileno Pinge-Filho
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Marcelle de Lima Ferreira Bispo
- Laboratório de Síntese de Moléculas Medicinais, Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Eliandro Reis Tavares
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Departamento de Patología, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- *Correspondence: Sueli Fumie Yamada-Ogatta,
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8
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Andriani GM, Morguette AEB, Spoladori LFA, Pereira PML, Cabral WRC, Fernandes BT, Tavares ER, Almeida RS, Lancheros CAC, Nakamura CV, Mello JCP, Yamauchi LM, Yamada-Ogatta SF. Antifungal Combination of Ethyl Acetate Extract of Poincianella pluviosa (DC.) L. P. Queiros Stem Bark With Amphotericin B in Cryptococcus neoformans. Front Microbiol 2021; 12:660645. [PMID: 34177839 PMCID: PMC8222688 DOI: 10.3389/fmicb.2021.660645] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/29/2021] [Accepted: 05/06/2021] [Indexed: 12/03/2022] Open
Abstract
Cryptococcus neoformans is the leading cause of cryptococcosis, an invasive and potentially fatal infectious disease. Therapeutic failures are due to the increase in antifungal resistance, the adverse effects of drugs, and the unavailability of therapeutic regimens in low-income countries, which limit the treatment of cryptococcosis, increasing the morbidity and mortality associated with these infections. Thus, new antifungal drugs and innovative strategies for the cryptococcosis treatment are urgently needed. The aim of the present study was to evaluate the effect of ethyl acetate fraction (EAF) of Poincianella pluviosa stem bark on planktonic and biofilm mode of growth of C. neoformans. Furthermore, the interaction between the EAF and amphotericin B (AmB) was evaluated in vitro and in Galleria mellonella infection model. Minimal inhibitory concentrations (MICs) of EAF ranged from 125.0 to >1,000.0 μg/ml and >1,000.0 μg/ml for planktonic and sessile cells, respectively. The combination between EAF and AmB exhibited a synergistic fungicidal activity toward C. neoformans, with a fractional inhibitory concentration index (FICI) ranging from 0.03 to 0.06 and 0.08 to 0.28 for planktonic and sessile cells, respectively. Microscopy analyses of planktonic C. neoformans cells treated with EAF, alone or combined with AmB, revealed morphological and ultrastructural alterations, including loss of integrity of the cell wall and cell membrane detachment, suggesting leakage of intracellular content, reduction of capsule size, and presence of vacuoles. Moreover, EAF alone or combined with AmB prolonged the survival rate of C. neoformans-infected G. mellonella larvae. These findings indicate that P. pluviosa may be an important source of new compounds that can be used as a fungus-specific adjuvant for the treatment of cryptococcosis.
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Affiliation(s)
- Gabriella Maria Andriani
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Ana Elisa Belotto Morguette
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Laís Fernanda Almeida Spoladori
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Patrícia Morais Lopes Pereira
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Weslei Roberto Correia Cabral
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Bruna Terci Fernandes
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Eliandro Reis Tavares
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Programa Nacional de Pós-Doutorado, CAPES, Londrina, Brazil
| | - Ricardo Sérgio Almeida
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Cesar Armando Contreras Lancheros
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Brazil
| | - Celso Vataru Nakamura
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Brazil
| | - João Carlos Palazzo Mello
- Laboratório de Biologia Farmacêutica, Departamento de Farmácia, Universidade Estadual de Maringá, Maringá, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
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9
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Tomiotto-Pellissier F, Alves DR, Morais SMD, Bortoleti BTDS, Gonçalves MD, Silva TF, Tavares ER, Yamauchi LM, Costa IN, Marinho ES, Marinho MM, Conchon-Costa I, Miranda-Sapla MM, Pavanelli WR. Caryocar coriaceum Wittm. fruit extracts as Leishmania inhibitors: in-vitro and in-silico approaches. J Biomol Struct Dyn 2021; 40:8040-8055. [PMID: 33769210 DOI: 10.1080/07391102.2021.1905557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/21/2022]
Abstract
Leishmaniasis is a group of neglected diseases caused by parasites of the Leishmania genus. The treatment of Leishmaniasis represents a great challenge, because the available drugs present high toxicity and none of them is fully effective. Caryocar is a botanical genus rich in phenolic compounds, which leaves extracts have already been described by its antileishmanial action. Thus, we investigated the effect of pulp and peel extracts of the Caryocar coriaceum fruit on promastigote and amastigote forms of Leishmania amazonensis. Both extracts had antipromastigote effect after 24, 48, and 72 h, and this effect was by apoptosis-like process induction, with reactive oxygen species (ROS) production, damage to the mitochondria and plasma membrane, and phosphatidylserine exposure. Knowing that the fruit extracts did not alter the viability of macrophages, we observed that the treatment reduced the infection of these cells. Thereafter, in the in vitro infection context, the extracts showed antioxidant proprieties, by reducing NO, ROS, and MDA levels. Besides, both peel and pulp extracts up-regulated Nrf2/HO-1/Ferritin expression and increase the total iron-bound in infected macrophages, which culminates in a depletion of available iron for L. amazonensis replication. In silico, the molecular modeling experiments showed that the three flavonoids presented in the C. coriaceum extracts can act as synergistic inhibitors of Leishmania proteins, and compete for the active site. Also, there is a preference for rutin at the active site due to its greater interaction binding strength.
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Affiliation(s)
- Fernanda Tomiotto-Pellissier
- Biosciences and Biotechnology Graduate Program, Carlos Chagas Institute (ICC), Fiocruz, Curitiba, Paraná, Brazil.,Department of Pathology Science, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | - Daniela Ribeiro Alves
- Department of Natural Sciences, Ceará State University, Fortaleza, Ceará, Brazil.,Theoretical and Electrochemical Chemistry Group, Faculty of Philosophy Dom Aureliano Matos, State University of Ceará, Limoeiro do Norte, Ceará, Brazil
| | | | - Bruna Taciane da Silva Bortoleti
- Biosciences and Biotechnology Graduate Program, Carlos Chagas Institute (ICC), Fiocruz, Curitiba, Paraná, Brazil.,Department of Pathology Science, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | - Manoela Daiele Gonçalves
- Department of Chemistry, Center of Exact Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | - Taylon Felipe Silva
- Department of Pathology Science, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | - Eliandro Reis Tavares
- Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | - Idessania Nazareth Costa
- Department of Pathology Science, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | - Emmanuel Silva Marinho
- Theoretical and Electrochemical Chemistry Group, Faculty of Philosophy Dom Aureliano Matos, State University of Ceará, Limoeiro do Norte, Ceará, Brazil
| | - Marcia Machado Marinho
- Iguatu Faculty of Education, Science and Letters, State University of Ceará, Iguatu, Ceará, Brazil
| | - Ivete Conchon-Costa
- Department of Pathology Science, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
| | | | - Wander Rogério Pavanelli
- Biosciences and Biotechnology Graduate Program, Carlos Chagas Institute (ICC), Fiocruz, Curitiba, Paraná, Brazil.,Department of Pathology Science, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brazil
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10
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Dier-Pereira AP, Trevizani Thihara IR, Duarte FC, da Silva RS, Santos JP, Tavares ER, de Oliveira CF, Pinge-Filho P, Kerbauy G, Perugini MRE, Yamauchi LM, Yamada-Ogatta SF. Methicillin-Resistant Staphylococcus haemolyticus Displaying Reduced Susceptibility to Vancomycin and High Biofilm-Forming Ability. Infect Disord Drug Targets 2021; 21:e160921191517. [PMID: 33596813 DOI: 10.2174/1871526521666210217151807] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/25/2020] [Accepted: 12/14/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Staphylococcus haemolyticus is one of the most frequently coagulase-negative staphylococci isolated from healthcare-associated infections, mainly those related to implanted medical devices. OBJECTIVES This study aimed to determine the antimicrobial susceptibility profile and biofilm forming capacity of S. haemolyticus isolated from bloodstream infections. METHODS A total of 40 S. haemolyticus isolates were characterized according to their genetic relatedness by repetitive element sequence based-PCR (REP-PCR), antimicrobial susceptibility profile, SCCmec typing, ability to form biofilm on abiotic surface and occurrence of putative genes related to biofilm formation. RESULTS One S. haemolyticus was susceptible to all antimicrobials. The other isolates (n=39) were resistant to cefoxitin; and among them 34 (87.2%) harbored the mecA gene into the SCCmec type I (5.9%), type III (29.4%), type IV (5.9%) and type V (20.6%); and 38.2% isolates were designated as NT. Apart from cefoxitin, 94.9% of the isolates were resistant to at least four antimicrobial classes, and 32.5% displayed minimal inhibitory concentration (MIC) values higher than 4.0 µg/mL for vancomycin. All isolates formed biofilm on polystyrene surface and were classified as strong biofilm-producers, except for one isolate. All isolates were negative for icaA gene, and the prevalence of the other genes was as follows: atl, 100%; fbp, 92.5%; aap, 90.0%; and bap, 20.0%. CONCLUSION This study reports a high prevalence of methicillin-resistant S. haemolyticus displaying decreased susceptibility to vancomycin with the ability to form strong biofilms on abiotic surface. The results support the importance of controlling the adequate use of antimicrobials for the treatment of staphylococcal infections.
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Affiliation(s)
- Ana Paula Dier-Pereira
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Isabella Ramos Trevizani Thihara
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Felipe Crepaldi Duarte
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Raquel Soares da Silva
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Jussevania Pereira Santos
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Eliandro Reis Tavares
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Caio Ferreira de Oliveira
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Phileno Pinge-Filho
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Gilselena Kerbauy
- Departamento de Enfermagem, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Márcia Regina Eches Perugini
- Programa de Pós-graduação em Fisiopatologia Clínica e Laboratorial, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná. Brazil
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11
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Sakai AM, Iensue TNAN, Pereira KO, Silva RLD, Pegoraro LGDO, Salvador MSDA, Rodrigues R, Capobiango JD, Souza NAAD, Pelisson M, Vespero EC, Yamauchi LM, Perugini MRE, Yamada-Ogatta SF, Rossetto EG, Kerbauy G. Colonization profile and duration by multi-resistant organisms in a prospective cohort of newborns after hospital discharge. Rev Inst Med Trop Sao Paulo 2020; 62:e22. [PMID: 32236389 PMCID: PMC7178810 DOI: 10.1590/s1678-9946202062022] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 02/18/2020] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to determine the spontaneous decolonization period and characteristics in a prospective cohort of newborns colonized by multidrug-resistant organisms, after their discharge from the neonatal intensive care unit. Multidrug resistance is defined as bacterial non-susceptibility to ≥ 1 agent of ≥ 3 antimicrobial categories. In total, 618 newborns were included in the study, of which 173 (28.0%) presented a positive culture for multidrug-resistant microorganisms, and of these, 52 (30.1%) were followed up in this study. The most frequent intrinsic factors were be born by cesarean section (86.5%), prematurity (84.6%), and very low birth weight (76.9%). The extrinsic factors were having remained hospitalized for an average of 27 days, during which 67.3% were submitted to invasive procedures and 88.5% received antimicrobials. The intrinsic and extrinsic factors of newborns were not associated to a decolonization period longer or shorter than 3 months, which was the average period of decolonization found in the present study. From the totality of colonization cultures sampled at hospital discharge, the Gram-negative Extended Spectrum β-lactamase producing bacteria were the most common, with 28.9% of babies colonized by Klebsiella spp. The median period of decolonization by multidrug-resistant microorganisms in the newborns population after hospital discharge was 3 months, but was highly dependent on the microbial species, and this period was not associated to any intrinsic and extrinsic factors of the newborn.
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Affiliation(s)
- Andressa Midori Sakai
- Universidade Estadual de Londrina, Departamento de Enfermagem, Londrina, Paraná, Brazil
| | | | - Kauana Olanda Pereira
- Universidade Estadual de Londrina, Departamento de Enfermagem, Londrina, Paraná, Brazil
| | - Renata Lima da Silva
- Universidade Estadual de Londrina, Departamento de Enfermagem, Londrina, Paraná, Brazil
| | | | - Marta Silva de Almeida Salvador
- Universidade Estadual de Londrina, Departamento de Microbiologia, Laboratório de Ecologia Microbiana, Londrina, Paraná, Brazil
| | - Renne Rodrigues
- Universidade Estadual de Londrina, Departamento de Saúde Coletiva, Londrina, Paraná, Brazil
| | - Jaqueline Dario Capobiango
- Universidade Estadual de Londrina, Departamento de Pediatria e Cirurgia Pediátrica, Londrina, Paraná, Brazil
| | | | - Marsileni Pelisson
- Universidade Estadual de Londrina, Departamento de Patologia, Análises Clínicas e Toxicológicas, Londrina, Paraná, Brazil
| | - Eliana Carolina Vespero
- Universidade Estadual de Londrina, Departamento de Patologia, Análises Clínicas e Toxicológicas, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Universidade Estadual de Londrina, Departamento de Microbiologia, Londrina, Paraná, Brazil
| | - Marcia Regina Eches Perugini
- Universidade Estadual de Londrina, Departamento de Patologia, Análises Clínicas e Toxicológicas, Londrina, Paraná, Brazil
| | | | | | - Gilselena Kerbauy
- Universidade Estadual de Londrina, Departamento de Enfermagem, Londrina, Paraná, Brazil
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12
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Morguette AEB, Bigotto BG, Varella RDL, Andriani GM, Spoladori LFDA, Pereira PML, de Andrade FG, Lancheros CAC, Nakamura CV, Syogo Arakawa N, Bruschi ML, Carlos Tomaz J, Lonni AASG, Kerbauy G, Tavares ER, Yamauchi LM, Yamada-Ogatta SF. Hydrogel Containing Oleoresin From Copaifera officinalis Presents Antibacterial Activity Against Streptococcus agalactiae. Front Microbiol 2019; 10:2806. [PMID: 31866975 PMCID: PMC6904337 DOI: 10.3389/fmicb.2019.02806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 05/10/2019] [Accepted: 11/19/2019] [Indexed: 12/25/2022] Open
Abstract
Streptococcus agalactiae or Group B Streptococcus (GBS) remains a leading cause of neonatal infections worldwide; and the maternal vaginal-rectal colonization increases the risk of vertical transmission of GBS to neonates and development of infections. This study reports the in vitro antibacterial effect of the oleoresin from Copaifera officinalis Jacq. L. in natura (copaiba oil) and loaded into carbomer-hydrogel against planktonic and sessile cells of GBS. First, the naturally extracted copaiba oil was tested for the ability to inhibit the growth and metabolic activity of planktonic and sessile GBS cells. The time-kill kinetics showed that copaiba oil exhibited a dose-dependent bactericidal activity against planktonic GBS strains, including those resistant to erythromycin and/or clindamycin [minimal bactericidal concentration (MBC) ranged from 0.06 mg/mL to 0.12 mg/mL]. Copaiba oil did not inhibit the growth of different Lactobacillus species, the indigenous members of the human microbiota. The mass spectral analyses of copaiba oil showed the presence of diterpenes, and the kaurenoic acid appears to be one of the active components of oleoresin from C. officinalis related to antibacterial activity against GBS. Microscopy analyses of planktonic GBS cells treated with copaiba oil revealed morphological and ultrastructural alterations, displaying disruption of the cell wall, damaged cell membrane, decreased electron density of the cytoplasm, presence of intracellular condensed material, and asymmetric septa. Copaiba oil also exhibited antibacterial activity against established biofilms of GBS strains, inhibiting the viability of sessile cells. Low-cost and eco-friendly carbomer-based hydrogels containing copaiba oil (0.5% – CARB-CO 0.5; 1.0% – CARB-CO 1.0) were then developed. However, only CARB-CO 1.0 preserved the antibacterial activity of copaiba oil against GBS strains. This formulation was homogeneous, soft, exhibited a viscoelastic behavior, and showed good biocompatibility with murine vaginal mucosa. Moreover, CARB-CO 1.0 showed a slow and sustained release of the copaiba oil, killing the planktonic and sessile (established biofilm) cells and inhibiting the biofilm formation of GBS on pre-coated abiotic surface. These results indicate that carbomer-based hydrogels may be useful as topical systems for delivery of copaiba oil directly into de vaginal mucosa and controlling S. agalactiae colonization and infection.
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Affiliation(s)
- Ana Elisa Belotto Morguette
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Briani Gisele Bigotto
- Laboratório de Habilidades Farmacêuticas, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Brazil
| | - Renata de Lima Varella
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Gabriella Maria Andriani
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Laís Fernanda de Almeida Spoladori
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Patrícia Moraes Lopes Pereira
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Fabio Goulart de Andrade
- Laboratório de Análise Histopatológica, Departamento de Histologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Cesar Armando Contreras Lancheros
- Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Brazil
| | - Celso Vataru Nakamura
- Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Inovação Tecnológica no Desenvolvimento de Fármacos e Cosméticos, Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Brazil
| | - Nilton Syogo Arakawa
- Programa de Pós-Graduação em Ciências Farmacêuticas, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Brazil
| | - Marcos Luciano Bruschi
- Laboratório de Pesquisa e Desenvolvimento de Sistemas de Liberação de Fármacos, Departamento de Farmácia, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, Brazil
| | - José Carlos Tomaz
- Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Audrey Alesandra Stinghen Garcia Lonni
- Laboratório de Habilidades Farmacêuticas, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Brazil.,Programa de Pós-Graduação em Ciências Farmacêuticas, Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Brazil
| | - Gilselena Kerbauy
- Departamento de Enfermagem, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Brazil
| | - Eliandro Reis Tavares
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Lucy Megumi Yamauchi
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Programa de Pós-Graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
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13
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Contreras Lancheros CA, Pelegrino MT, Kian D, Tavares ER, Hiraiwa PM, Goldenberg S, Nakamura CV, Yamauchi LM, Pinge-Filho P, Seabra AB, Yamada-Ogatta SF. Selective Antiprotozoal Activity of Nitric Oxide-releasing Chitosan Nanoparticles Against Trypanosoma cruzi: Toxicity and Mechanisms of Action. Curr Pharm Des 2019; 24:830-839. [PMID: 29424305 DOI: 10.2174/1381612824666180209105625] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 10/11/2017] [Revised: 01/18/2018] [Accepted: 02/01/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Chagas' disease, caused by Trypanosoma cruzi, was described for the first time over a hundred years ago. Nonetheless, clinically available drugs still lack effective and selective properties. Nitric oxide (NO) produced by activated macrophages controls the progression of disease by killing the parasite. METHODS AND RESULTS Here, chitosan nanoparticles (CS NPs) were synthesized and mercaptosuccinic acid (MSA), the NO donor precursor, was encapsulated into CS NPs, forming MSA-CS NPs, which had hydrodynamic size of 101.0±2.535 nm. Encapsulated MSA was nitrosated forming NO donor S-nitrosomercaptosuccinic acid-containing nanoparticles (S-nitroso-MSA-CS NPs). Kinetic data revealed a sustained release of NO from the nanoparticles. S-nitroso-MSA-CS NPs inhibited epimastigote proliferation and trypomastigote viability of T. cruzi, with IC50=75.0±6.5 µg·mL-1 and EC50=25.0±5.0 µg·mL-1, respectively. Treatment of peritoneal macrophages with nanoparticles decreased the number of T. cruzi-infected cells and the average number of intracellular replicative amastigotes per infected cells. Besides, the results have showed a selective behaviour of S-nitroso-MSA-CS NPs to parasites. Morphological and biochemical changes induced by these NO-releasing nanoparticles, such as cell shrinkage, cell cycle arrest, mitochondrial membrane depolarization and phosphatidylserine exposure on cell surface indicate that epimastigotes death is associated to the apoptotic pathway. CONCLUSION S-nitroso-MSA-CS NPs are promising nanocarriers for the treatment of Chagas's disease.
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Affiliation(s)
- Cesar Armando Contreras Lancheros
- Departamento de Microbiologia, Centro de Ciencias Biologicas, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid s/n, Campus Universitario, 86051-980, Londrina, Parana, Brazil
| | - Milena Trevisan Pelegrino
- Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC. Avenida dos Estados 5001, Santa Terezinha, 09210-580, Santo Andre, Sao Paulo, Brazil
| | - Danielle Kian
- Departamento de Microbiologia, Centro de Ciencias Biologicas, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid s/n, Campus Universitario, 86051-980, Londrina, Parana, Brazil
| | - Eliandro Reis Tavares
- Bolsista do Programa Nacional de Pos-Doutorado da Coordenacao de Aperfeicoamento de Pessoal de Nível Superior - PNPD/CAPES. Ministry of Education, Rio de Janeiro, RJ, Brazil
| | - Priscila Mazzochi Hiraiwa
- Instituto Carlos Chagas, FIOCRUZ. Rua Professor Algacyr Munhoz Mader, 3775, Cidade Industrial, 81350- 010, Curitiba, Parana, Brazil
| | - Samuel Goldenberg
- Instituto Carlos Chagas, FIOCRUZ. Rua Professor Algacyr Munhoz Mader, 3775, Cidade Industrial, 81350- 010, Curitiba, Parana, Brazil
| | - Celso Vataru Nakamura
- Departamento de Ciencias Basicas da Saude, Centro de Ciencias da Saude, Universidade Estadual de Maringa. Avenida Colombo 5790, 87020-900, Maringa, Parana, Brazil
| | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Centro de Ciencias Biologicas, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid s/n, Campus Universitario, 86051-980, Londrina, Parana, Brazil
| | - Phileno Pinge-Filho
- Departamento de Ciencias Patologicas, Centro de Ciencias Biologicas, Rodovia Celso Garcia Cid s/n, Campus Universitario, 86051-980, Londrina, Parana, Brazil
| | - Amedea Barozzi Seabra
- Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC. Avenida dos Estados 5001, Santa Terezinha, 09210-580, Santo Andre, Sao Paulo, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Departamento de Microbiologia, Centro de Ciencias Biologicas, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid s/n, Campus Universitario, 86051-980, Londrina, Parana, Brazil
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14
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Fávaro LDS, de Paula-Petroli SB, Romanin P, Tavares EDR, Ribeiro RA, Hungria M, Oliveira AGD, Yamauchi LM, Yamada-Ogatta SF, Carrara-Marroni FE. Detection of OXA-58-producing Acinetobacter bereziniae in Brazil. J Glob Antimicrob Resist 2019; 19:53-55. [PMID: 31449966 DOI: 10.1016/j.jgar.2019.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/19/2019] [Accepted: 08/17/2019] [Indexed: 12/01/2022] Open
Affiliation(s)
- Larissa Dos Santos Fávaro
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Patológicas, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil
| | - Suelen Balero de Paula-Petroli
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Patológicas, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil
| | - Priscila Romanin
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Patológicas, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil
| | - Eliandro Dos Reis Tavares
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil
| | | | - Mariangela Hungria
- Laboratório de Biotecnologia do Solo, EMPRAPA Soja, Londrina - PR, Brazil
| | - Admilton Gonçalves de Oliveira
- Laboratório de Biotecnologia Microbiana, Departamento de Microbiologia, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil
| | - Lucy Megumi Yamauchi
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil
| | - Floristher Elaine Carrara-Marroni
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Patológicas, Universidade Estadual de Londrina - UEL, Londrina - PR, Brazil.
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15
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Romanin P, Palermo RL, Cavalini JF, Fávaro LDS, De Paula-Petroli SB, Fernandes EV, Dos Anjos Szczerepa MM, Tognim MCB, Yamada-Ogatta SF, Carrara-Marroni FE, Yamauchi LM. Multidrug- and Extensively Drug-Resistant Acinetobacter baumannii in a Tertiary Hospital from Brazil: The Importance of Carbapenemase Encoding Genes and Epidemic Clonal Complexes in a 10-Year Study. Microb Drug Resist 2019; 25:1365-1373. [PMID: 31361565 DOI: 10.1089/mdr.2019.0002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
This study aimed to characterize the main mechanisms of acquired antimicrobial resistance of 103 multidrug-resistant Acinetobacter baumannii isolated from bloodstream from 2006 to 2016 from a hospital in Londrina, Brazil. All 103 isolates were identified as A. baumannii by amplification of the blaOXA-51-like and rpoB genes. Mortality was observed in the majority (81.6%) of the patients. High non-susceptibility rates (100.0-10.7%) were obtained for the evaluated antimicrobials, including colistin, polymyxin B, and tigecycline, and most isolates were classified as extensively drug-resistant (78.6%). Carbapenemase production was observed in 92.2% of the isolates. All carbapenem-resistant isolates showed a carbapenem-hydrolyzing class D β-lactamase being either blaOXA-23-like (97.9%) or blaOXA-143-like (2.1%). None of the isolates had the genes blaOXA-24-like, blaOXA-58-like, blaOXA-48, blaKPC, blaNDM, blaSPM-1, blaSIM-1, blaVIM, blaIMP, blaGIM, blaGES, mcr-1, qnrA, qnrB, qnrC, qnrS, and qnrVc. As a genetic context of the blaOXA-23-like gene, Tn2006 was predominated (86.0%), and Tn2008 was less frequent (12.9%). Isolates harboring the blaOXA-143-like gene showed the blaOXA-253-like variant. A polyclonal profile was observed among the A. baumannii isolates. The presence of the international clonal complexes CC113/79, CC109/1, CC110/25, and CC103/15 was detected, with prevalence of CC113/79 (38.8%). This study provides essential information to understand the antimicrobial resistance patterns of A. baumannii and can be used to strengthen infection control measures in our hospital. Also, the study reinforces the urgent need to develop stewardship programs to avoid the spread and potential outbreaks by this pathogen.
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Affiliation(s)
- Priscila Romanin
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Toxicológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, Brazil
| | - Raquel Lima Palermo
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Toxicológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, Brazil
| | - Jônatas Fernando Cavalini
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Toxicológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Larissa Dos Santos Fávaro
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Toxicológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Suelen Balero De Paula-Petroli
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Toxicológicas, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, Brazil
| | - Eduardo Vignoto Fernandes
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Toxicológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | | | - Maria Cristina Bronharo Tognim
- Laboratório de Microbiologia, Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá, Maringá, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, Brazil
| | - Floristher Elaine Carrara-Marroni
- Laboratório de Estudos Moleculares e Resistência aos Antimicrobianos, Departamento de Patologia, Análises Clínicas e Toxicológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Lucy Megumi Yamauchi
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, Brazil
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16
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Miranda-Sapla MM, Tomiotto-Pellissier F, Assolini JP, Carloto ACM, Bortoleti BTDS, Gonçalves MD, Tavares ER, Rodrigues JHDS, Simão ANC, Yamauchi LM, Nakamura CV, Verri WA, Costa IN, Conchon-Costa I, Pavanelli WR. trans-Chalcone modulates Leishmania amazonensis infection in vitro by Nrf2 overexpression affecting iron availability. Eur J Pharmacol 2019; 853:275-288. [DOI: 10.1016/j.ejphar.2019.03.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 03/25/2019] [Accepted: 03/27/2019] [Indexed: 12/20/2022]
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17
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Cataneo AHD, Tomiotto-Pellissier F, Miranda-Sapla MM, Assolini JP, Panis C, Kian D, Yamauchi LM, Colado Simão AN, Casagrande R, Pinge-Filho P, Costa IN, Verri WA, Conchon-Costa I, Pavanelli WR. Quercetin promotes antipromastigote effect by increasing the ROS production and anti-amastigote by upregulating Nrf2/HO-1 expression, affecting iron availability. Biomed Pharmacother 2019; 113:108745. [DOI: 10.1016/j.biopha.2019.108745] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 02/15/2019] [Accepted: 02/25/2019] [Indexed: 12/23/2022] Open
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18
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Pinge‐Filho P, Pereira RS, Malvezi AD, Lucchetti BFC, Cecchini R, Yamauchi LM, Yamada‐Ogatta SF, Verri WA, Martins‐Pinge MC, Tatakihara VLH. Actions of Angeli's salt, a nitroxyl (HNO) donor, on
Trypanosoma cruzi
infection. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.662.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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)
| | | | | | | | - Rubens Cecchini
- Pathological SciencesState University of LondrinaLondrinaBrazil
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19
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Duarte FC, Danelli T, Tavares ER, Morguette AEB, Kerbauy G, Grion CMC, Yamauchi LM, Perugini MRE, Yamada-Ogatta SF. Fatal sepsis caused by mecA-positive oxacillin-susceptible Staphylococcus aureus: First report in a tertiary hospital of southern Brazil. J Infect Chemother 2018; 25:293-297. [PMID: 30482697 DOI: 10.1016/j.jiac.2018.09.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 09/11/2018] [Accepted: 09/19/2018] [Indexed: 11/17/2022]
Abstract
mecA-positive oxacillin phenotypically susceptible Staphylococcus aureus (OS-MRSA) is increasingly reported worldwide. This bacterium poses a therapeutic threat, as it can be misidentified as an oxacillin-susceptible organism by phenotypic methods that are routinely used in the majority of clinical microbiology laboratories. Herein, we report the first case of fatal sepsis in a 43-year-old female patient caused by an OS-MRSA SCCmec type IVa/ST1/CC1 in a tertiary hospital in southern Brazil, which highlights the difficulties involved in diagnosing this bacterium. Blood cultures and phenotypic susceptibility tests on admission yielded a penicillin-resistant S. aureus. Although vancomycin therapy was initiated, this antibacterial was replaced by oxacillin, based on the susceptibility result. However, the clinical conditions of the patient deteriorated rapidly evolving to fatal septic shock. Clinical microbiology laboratories should consider the use of additional tests to accurately distinguish between various antimicrobial phenotypes of S. aureus.
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Affiliation(s)
- Felipe Crepaldi Duarte
- Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Brazil
| | - Tiago Danelli
- Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Brazil
| | - Eliandro Reis Tavares
- Bolsista do Programa Nacional de Pós-Doutorado do Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil; Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil
| | - Ana Elisa Belotto Morguette
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil
| | - Gilselena Kerbauy
- Departamento de Enfermagem, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Brazil
| | | | - Lucy Megumi Yamauchi
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil; Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil
| | - Marcia Regina Eches Perugini
- Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Brazil; Laboratório de Microbiologia Clínica, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Brazil.
| | - Sueli Fumie Yamada-Ogatta
- Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Brazil; Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil; Programa de Pós-graduação em Microbiologia, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Brazil.
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20
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Thomazelli APFDS, Tomiotto-Pellissier F, Miranda-Sapla MM, da Silva SS, Alvarenga DS, Panis C, Cataneo AHD, Bordignon J, Silveira GF, Yamauchi LM, de Sá JPSR, Felipe I, Pavanelli WR, Conchon-Costa I. Concanavalin-A displays leishmanicidal activity by inducing ROS production in human peripheral blood mononuclear cells. Immunopharmacol Immunotoxicol 2018; 40:387-392. [DOI: 10.1080/08923973.2018.1510960] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
| | - Fernanda Tomiotto-Pellissier
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | - Milena Menegazzo Miranda-Sapla
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | - Suelen Santos da Silva
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | - Daniele Sapede Alvarenga
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | - Carolina Panis
- Laboratory of Inflammatory Mediators, University of Western Paraná, UNIOESTE, Francisco Beltrão, Paraná, Brasil
| | - Allan Henrique Depieri Cataneo
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | | | | | - Lucy Megumi Yamauchi
- Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | | | - Ionice Felipe
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | - Wander Rogério Pavanelli
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
| | - Ivete Conchon-Costa
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, Paraná, Brasil
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21
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Duarte FC, Tavares ER, Danelli T, Ribeiro MAG, Yamauchi LM, Yamada-Ogatta SF, Perugini MRE. Disseminated Clonal Complex 5 (CC5) methicillin-resistant Staphylococcus aureus SCCmec type II in a tertiary hospital of Southern Brazil. Rev Inst Med Trop Sao Paulo 2018; 60:e32. [PMID: 30043936 PMCID: PMC6056895 DOI: 10.1590/s1678-9946201860032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 06/07/2018] [Indexed: 12/03/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the leading causes of human infections worldwide, with major dominant lineage circulating in particular geographical regions. The Brazilian Epidemic Clone (BEC, SCCmec III, ST 239) has been predominant in most Brazilian hospitals. Here, we report the prevalence of MRSA SCCmec type II exhibiting different STs, most of them belonging to CC5 in a tertiary hospital in Southern Brazil.
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Affiliation(s)
- Felipe Crepaldi Duarte
- Universidade Estadual de Londrina, Centro de Ciências da Saúde, Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Londrina, Paraná, Brazil
| | - Eliandro Reis Tavares
- Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Microbiologia, Programa de Pós-Graduação em Microbiologia, Londrina, Paraná, Brazil.,Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Microbiologia, Laboratório de Biologia Molecular de Microrganismos, Londrina, Paraná, Brazil
| | - Tiago Danelli
- Universidade Estadual de Londrina, Centro de Ciências da Saúde, Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Londrina, Paraná, Brazil
| | - Maria Alice Galvão Ribeiro
- Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Microbiologia, Programa de Pós-Graduação em Microbiologia, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Microbiologia, Programa de Pós-Graduação em Microbiologia, Londrina, Paraná, Brazil.,Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Microbiologia, Laboratório de Biologia Molecular de Microrganismos, Londrina, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Universidade Estadual de Londrina, Centro de Ciências da Saúde, Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Londrina, Paraná, Brazil.,Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Microbiologia, Programa de Pós-Graduação em Microbiologia, Londrina, Paraná, Brazil.,Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Microbiologia, Laboratório de Biologia Molecular de Microrganismos, Londrina, Paraná, Brazil
| | - Marcia Regina Eches Perugini
- Universidade Estadual de Londrina, Centro de Ciências da Saúde, Departamento de Patologia, Análises Clínicas e Toxicológicas, Programa de Mestrado em Fisiopatologia Clínica e Laboratorial, Londrina, Paraná, Brazil.,Universidade Estadual de Londrina, Centro de Ciências da Saúde, Departamento de Patologia, Análises Clínicas e Toxicológicas, Laboratório de Microbiologia Clínica, Londrina, Paraná, Brazil
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22
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Morguette AEB, Biasi-Garbin RP, Otaguiri ES, Perugini MRE, Pelisson M, Carrara-Marroni FE, Vespero EC, Belei RA, Kerbauy G, Capobiango JD, Yamauchi LM, Yamada-Ogatta SF. Prevalence and antimicrobial susceptibility profile of Streptococcus agalactiae in pregnant women seen at the University Hospital of Londrina, Paraná, Brazil. Semin Cienc Biol Saude 2018. [DOI: 10.5433/1679-0367.2018v39n1p77] [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: 01/20/2023]
Abstract
A retrospective study of pregnant women seen at the University Hospital of Londrina, Paraná, Brazil was performed to determine the prevalence of Group B Streptococcus (GBS) vaginal-rectal colonization, and the GBS susceptibility for antimicrobials used in intrapartum antibiotic prophylaxis. A vaginal-rectal swab was collected from 2,901 women between 35 and 37 weeks of gestation. Of these, 528 (18.2%) had a positive culture for GBS, and 0.4%, 10.2% and 10% of the isolates were resistant to penicillin, erythromycin and clindamycin, respectively. These results highlight the importance of continuous surveillance of GBS colonization in pregnant women for preventing GBS infections in neonates.
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23
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Duarte FC, Danelli T, Ribeiro MAG, Perugini LF, Vespero EC, Carrara-Marroni FE, Pelisson M, Yamauchi LM, Yamada-Ogatta SF, Eches Perugini MR. Bacteremia causada por Staphylococcus aureus: Uma análise de quinze anos da sensibilidade a antimicrobianos em um hospital terciário do Brasil. Rev Epidemiol Control Infect 2018. [DOI: 10.17058/reci.v8i3.11245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Justificativa e Objetivo: Infecções da corrente sanguínea por Staphylococcus aureus constituem uma das principais causas de morbidade e mortalidade em todo mundo. O tratamento de infecções por S. aureus é complicado pela elevada prevalência de resistência a antimicrobianos. Compreender a epidemiologia e os padrões de resistência deste microrganismo é um ponto crítico para a prescrição empírica adequada de antimicrobianos. Desta maneira, este estudo teve por objetivo avaliar a evolução de resistência antimicrobiana de S. aureus num período de quinze anos. Metodologia: Foram analisados os testes de sensibilidade aos antimicrobianos de 720 S. aureus isolados de hemoculturas de um hospital terciário do sul do Brasil. Os dados foram obtidos do Sistema de Informação AGTA Healthcare, módulo LABHOS®. Resultados: A frequência média de S. aureus resistentes a meticilina foi de 43,74%. Com exceção de penicilina, ocorreu variação significativa da resistência para todos os antimicrobianos no período avaliado (< 0,001). Ciprofloxacina, Eritromicina e Clindamicina apresentaram os maiores índices de resistência com tendência de aumento. Surpreendentemente, Gentamicina e Sulfametoxazol-Trimetoprim apresentaram queda significativa nos percentuais de resistência. Analisando-se vancomicina do ano 2011 a 2015 pode-se evidenciar um aumento das concentrações inibitórias mínimas. Conclusão: Embora a resistência a antimicrobianos tenha aumentado nos quinze anos para a maioria dos antimicrobianos, para Sulfametoxazol-Trimetoprim e Gentamicina ocorreu redução significativa, indicando uma possível alteração clonal. Este estudo evidenciou, ainda, a emergência do fenótipo S. aureus intermediário a vancomicina.
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24
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Kian D, Lancheros CAC, Assolini JP, Arakawa NS, Veiga-Júnior VF, Nakamura CV, Pinge-Filho P, Conchon-Costa I, Pavanelli WR, Yamada-Ogatta SF, Yamauchi LM. Trypanocidal activity of copaiba oil and kaurenoic acid does not depend on macrophage killing machinery. Biomed Pharmacother 2018; 103:1294-1301. [PMID: 29864911 DOI: 10.1016/j.biopha.2018.04.164] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 11/07/2017] [Revised: 04/19/2018] [Accepted: 04/23/2018] [Indexed: 12/11/2022] Open
Abstract
Activity, mechanisms of action, and toxicity of natural compounds have been investigated in a context in which knowledge on which pathway is activated remains crucial to understand the action mechanism of these bioactive substances when treating an infected host. Herein, we showed an ability of copaiba oil and kaurenoic acid to eliminate Trypanosoma cruzi forms by infected macrophages through other mechanisms in addition to nitric oxide, reactive oxygen species, iron metabolism, and antioxidant defense. Both compounds induced an anti-inflammatory response with an increase in IL-10 and TGF-β as well as a decrease in IL-12 production. Despite being able to modulate the immune response in host cells, the antimicrobial activity of copaiba oil and kaurenoic acid seems to be a direct action of the compounds on the parasites, causing their death.
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Affiliation(s)
- Danielle Kian
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | | | - João Paulo Assolini
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Nilton Syogo Arakawa
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | | | - Celso Vataru Nakamura
- Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - Phileno Pinge-Filho
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Ivete Conchon-Costa
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Wander Rogério Pavanelli
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil.
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25
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Otaguiri ES, Morguette AEB, Morey AT, Tavares ER, Kerbauy G, de Almeida Torres RSL, Chaves Júnior M, Tognim MCB, Góes VM, Krieger MA, Perugini MRE, Yamauchi LM, Yamada-Ogatta SF. Development of a melting-curve based multiplex real-time PCR assay for simultaneous detection of Streptococcus agalactiae and genes encoding resistance to macrolides and lincosamides. BMC Pregnancy Childbirth 2018; 18:126. [PMID: 29724169 PMCID: PMC5934892 DOI: 10.1186/s12884-018-1774-5] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 04/25/2018] [Indexed: 01/25/2023] Open
Abstract
Background Streptococcus agalactiae or Group B Streptococcus (GBS) remains the leading cause of infections in newborns worldwilde. Prenatal GBS screening of pregnant women for vaginal-rectal colonization is recommended in many countries to manage appropriate intrapartum antimicrobial prophylaxis for those identified as carriers. In this study, a novel melting-curve based multiplex real-time PCR assay for the simultaneous detection of GBS and macrolide and lincosamide resistance markers was developed. The usefulness of the assay was evaluated for rapid and accurate prenatal GBS screening. Methods One hundred two pregnant women who were at 35–37 weeks of gestation were enrolled in this study. The analytical performance of the multiplex real-time PCR was first tested using a panel of reference and clinical bacterial and fungal strains. To test the clinical performance, vaginal-rectal swabs were obtained from pregnant women who were seen at the teaching hospital for regular prenatal care. The results of real-time were compared with those obtained from microbiological analyses. Results The real-time PCR assay showed 100% specificity and a limit of detection of 104 colony forming units equivalent per reaction. The prevalence of GBS colonization among the population studied was 15.7% (16/102) based on a positive culture and the real-time PCR results. Agreement between the two assays was found for 11 (68.75%) GBS colonized women. Using the culture-based results as a reference, the multiplex real-time PCR had a sensitivity of 91.7% (11/12, CI 59.7–99.6%), a specificity of 95.5% (86/90, CI 89.8–98.7%), a positive predictive value of 73.3% (11/15, CI 44.8–91.1%) and a negative predictive value of 98.9% (86/87, CI 92.9–99.9%). Conclusion The multiplex real-time PCR is a rapid, affordable and sensitive assay for direct detection of GBS in vaginal-rectal swabs. Electronic supplementary material The online version of this article (10.1186/s12884-018-1774-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Eliane Saori Otaguiri
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Ana Elisa Belotto Morguette
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Alexandre Tadachi Morey
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Eliandro Reis Tavares
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Gilselena Kerbauy
- Departamento de Enfermagem, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Rosângela S L de Almeida Torres
- Laboratory of Bacteriology, Epidemiology Laboratory and Disease Control Division, Laboratório Central do Estado do Paraná - LACEN, Curitiba, PR, Brazil
| | - Mauricio Chaves Júnior
- Departamento de Medicina, Hospital Universitário de Maringá, Universidade Estadual de Maringá, Maringá, Brazil
| | | | | | | | - Marcia Regina Eches Perugini
- Departamento de Patologia, Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil. .,Departamento de Microbiologia, Universidade Estadual de Londrina, Centro de Ciências Biológicas, Rodovia Celso Garcia Cid, PR 445, km 380. CEP, Londrina, 86057-970, Brazil.
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26
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Pereira RS, Malvezi AD, Lucchetti BFC, Tatakihara VLH, Suzukawa HT, Lovo‐Martins MI, Almeida Araujo EJ, Yamauchi LM, Yamada‐Ogatta SF, Martins‐Pinge MC, Pinge‐Filho P. Benznidazole and aspirin association for the treatment of chronic experimental
Trypanosoma cruzi
infection. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.819.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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]
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Tomiotto-Pellissier F, Alves DR, Miranda-Sapla MM, de Morais SM, Assolini JP, da Silva Bortoleti BT, Gonçalves MD, Cataneo AHD, Kian D, Madeira TB, Yamauchi LM, Nixdorf SL, Costa IN, Conchon-Costa I, Pavanelli WR. Caryocar coriaceum extracts exert leishmanicidal effect acting in promastigote forms by apoptosis-like mechanism and intracellular amastigotes by Nrf2/HO-1/ferritin dependent response and iron depletion. Biomed Pharmacother 2018; 98:662-672. [DOI: 10.1016/j.biopha.2017.12.083] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 11/27/2017] [Accepted: 12/18/2017] [Indexed: 01/26/2023] Open
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Carvalho de Freitas R, Lonien SCH, Malvezi AD, Silveira GF, Wowk PF, da Silva RV, Yamauchi LM, Yamada-Ogatta SF, Rizzo LV, Bordignon J, Pinge-Filho P. Trypanosoma cruzi: Inhibition of infection of human monocytes by aspirin. Exp Parasitol 2017; 182:26-33. [PMID: 28939444 DOI: 10.1016/j.exppara.2017.09.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 07/18/2017] [Accepted: 09/17/2017] [Indexed: 01/04/2023]
Abstract
Cell invasion by Trypanosoma cruzi and its intracellular replication are essential for progression of the parasite life cycle and development of Chagas disease. Prostaglandin E2 (PGE2) and other eicosanoids potently modulate host response and contribute to Chagas disease progression. In this study, we evaluated the effect of aspirin (ASA), a non-selective cyclooxygenase (COX) inhibitor on the T. cruzi invasion and its influence on nitric oxide and cytokine production in human monocytes. The pretreatment of monocytes with ASA or SQ 22536 (adenylate-cyclase inhibitor) induced a marked inhibition of T. cruzi infection. On the other hand, the treatment of monocytes with SQ 22536 after ASA restored the invasiveness of T. cruzi. This reestablishment was associated with a decrease in nitric oxide and PGE2 production, and also an increase of interleukin-10 and interleukin-12 by cells pre-treated with ASA. Altogether, these results reinforce the idea that the cyclooxygenase pathway plays a fundamental role in the process of parasite invasion in an in vitro model of T. cruzi infection.
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Affiliation(s)
- Rafael Carvalho de Freitas
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Sandra Cristina Heim Lonien
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Aparecida Donizette Malvezi
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Guilherme Ferreira Silveira
- Laboratório de Virologia Molecular, Instituto Carlos Chagas - ICC/Fiocruz, Curitiba, 81350-010, Paraná, Brazil
| | - Pryscilla Fanini Wowk
- Laboratório de Virologia Molecular, Instituto Carlos Chagas - ICC/Fiocruz, Curitiba, 81350-010, Paraná, Brazil
| | - Rosiane Valeriano da Silva
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Luiz Vicente Rizzo
- Hospital Israelita Albert Einstein, Avenida Albert Einstein 627-701, Subsolo Bloco A., 05651-901, São Paulo, São Paulo, Brazil
| | - Juliano Bordignon
- Laboratório de Virologia Molecular, Instituto Carlos Chagas - ICC/Fiocruz, Curitiba, 81350-010, Paraná, Brazil
| | - Phileno Pinge-Filho
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil.
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Cossentini LA, Da Silva RV, Yamada-Ogatta SF, Yamauchi LM, De Almeida Araújo EJ, Pinge-Filho P. Aspirin treatment exacerbates oral infections by Trypanosoma cruzi. Exp Parasitol 2016; 164:64-70. [PMID: 26826555 DOI: 10.1016/j.exppara.2016.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 08/07/2015] [Revised: 01/08/2016] [Accepted: 01/20/2016] [Indexed: 01/05/2023]
Abstract
Oral transmission of the protozoan parasite Trypanosoma cruzi, the etiological agent of Chagas disease, has been documented in Latin American countries. The reported cases of infection were due to the ingestion of contaminated fresh fruit, juices, or sugar cane juice. There have been few studies on the physiopathology of the disease in oral transmission cases. Gastritis is a common ailment that can be caused by poor dietary habits, intake of alcohol or other gastric irritants, bacterial infection, or by the widespread use of non-steroidal anti-inflammatory drugs (NSAIDs). This study investigated in a mouse model whether gastric mucosal injury, induced by aspirin, would affect the course of disease in animals infected with T. cruzi by the oral route. The CL14 and G strains of T. cruzi, both of low infectivity, were used. To this end, groups of BALB/c mice were treated during 5 days with aspirin (100 mg kg(-1)) before oral infection with T. cruzi metacyclic forms (4 × 10(5) or 5 × 10(7) parasites/mouse). Histological analysis and determination of nitric oxide and TNF-α were performed in gastric samples obtained 5 days after infection. Parasitemia was monitored from the thirteenth day after infection. The results indicate that aspirin treatment of mice injured their gastric mucosa and facilitated invasion by both CL14 and G strains of T. cruzi. Strain CL14 caused more severe infection compared to the G strain, as larger numbers of amastigote nests were found in the stomach and parasitemia levels were higher. Our study is novel in that it shows that gastric mucosal damage caused by aspirin, a commonly used NSAID, facilitates T. cruzi infection by the oral route.
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Affiliation(s)
- Luana Aparecida Cossentini
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | | | | | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Eduardo José De Almeida Araújo
- Laboratório de Neurogastroenterologia, Departamento de Histologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Phileno Pinge-Filho
- Laboratório de Imunopatologia Experimental, Departamento de Ciências Patológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
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Paula SBD, Morey AT, Santos JP, Santos PMCD, Gameiro DG, Kerbauy G, Sena EM, Ueda LT, Carneiro M, Pinge-Filho P, Yamauchi LM, Yamada-Ogatta SF. Oral Candida colonization in HIV-infected patients in Londrina-PR, Brazil: antifungal susceptibility and virulence factors. J Infect Dev Ctries 2015; 9:1350-9. [PMID: 26719941 DOI: 10.3855/jidc.6970] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 05/05/2015] [Accepted: 05/21/2015] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Host colonization by Candida species is an important predisposing factor to candidiasis, which seems to be more frequent in human immunodeficiency virus (HIV)-infected patients. Knowledge about the distribution, antifungal susceptibility, and virulence of oral Candida isolates is important for effective management of candidiasis. METHODOLOGY Oral rinses were collected from 242 HIV-infected patients without clinical evidence of candidiasis seen at the AIDS referral center in Londrina, Brazil. Species were identified by standard phenotypic and molecular methods, and characterized in vitro according to antifungal susceptibility, cell surface hydrophobicity, biofilm formation, and enzyme activities. RESULTS Oral Candida colonization was detected in 50.4% of patients and combined use of antiretroviral therapy and protease inhibitor had a protective effect against colonization. Candida albicans (75.2%) was the most prevalent species. A high proportion of Candida spp. (39.9%) showed decreased susceptibility to fluconazole. Five isolates were resistant to nystatin. Protease and phospholipase activities were detected in 100% and 36.8% of isolates, respectively. Most isolates displayed a hydrophobic property that was associated with biofilm formation ability. CONCLUSIONS A significant number of oral Candida species exhibiting decreased susceptibility to fluconazole were isolated from colonized HIV-infected individuals. Furthermore, all isolates expressed potential virulence attributes in vitro. Given the high incidence and severity of fungal infections in HIV-infected individuals, the results of this study reinforce the importance of antifungal susceptibility testing, which contributes to therapeutic strategies and highlights the need for continuous surveillance of Candida colonization in this population.
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Tavares ER, Azevedo CS, Panagio LA, Pelisson M, Pinge-Filho P, Venancio EJ, Barros TF, Yamada-Ogatta SF, Yamauchi LM. Accurate and sensitive real-time PCR assays using intergenic spacer 1 region to differentiate Cryptococcus gattii sensu lato and Cryptococcus neoformans sensu lato. Med Mycol 2015; 54:89-96. [PMID: 26392390 DOI: 10.1093/mmy/myv078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 07/14/2015] [Indexed: 12/21/2022] Open
Abstract
In this work, two accurate and sensitive real-time polymerase chain reaction (PCR) assays to differentiate pathogenic Cryptococcus gattii sensu lato (s.l.) and C. neoformans sensu lato (s.l.) targeting the intergenic spacer 1 (IGS1) region from rDNA locus were developed. Specific primers were designed based on their IGS1 sequence analyses and the optimal real-time PCR assays showed that the dissociation curves generated two different melting peaks, at 82.8 and 84.2ºC for C. gattii s.l. and C. neoformans s.l., respectively. No amplifications were observed in the negative template control. The minimum limit of detection of both primers was 100 plasmid copies per reaction, and they were highly specific when tested with a range of fungal DNAs. Overall, the results showed that the designed primers completely differentiated C. gattii s.l. and C. neoformans s.l. from clinical and environmental sources with great accuracy when compared to phenotypic identification, with no cross-reactivity to other fungal DNA.
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Affiliation(s)
| | | | - Luciano Aparecido Panagio
- Departamento de Microbiologia, Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Marsileni Pelisson
- Departamento de Patologia Aplicada, Análise Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Phileno Pinge-Filho
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Emerson José Venancio
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Tânia Fraga Barros
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, BA, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Departamento de Microbiologia, Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
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Kian D, Lancheros CAC, Damiani IAC, Fernandes TZO, Pinge-Filho P, dos Santos MRM, da Silveira JF, Nakamura CV, da Silva JS, Yamada-Ogatta SF, Yamauchi LM. Molecular Characterization of <i>Trypanosoma cruzi Tc8.2</i> Gene Indicates Two Differential Locations for the Encoded Protein in Epimastigote and Trypomastigote Forms. Korean J Parasitol 2015; 53:483-8. [PMID: 26323848 PMCID: PMC4566500 DOI: 10.3347/kjp.2015.53.4.483] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 07/18/2015] [Accepted: 07/21/2015] [Indexed: 11/24/2022]
Abstract
This report describes the molecular characterization of the Tc8.2 gene of Trypanosoma cruzi. Both the Tc8.2 gene and its encoded protein were analyzed by bioinformatics, while Northern blot and RT-PCR were used for the transcripts. Besides, immunolocalization of recombinant protein was done by immunofluorescence and electron microscopy. Analysis indicated the presence of a single copy of Tc8.2 in the T. cruzi genome and 2-different sized transcripts in epimastigotes/amastigotes and trypomastigotes. Immunoblotting showed 70 and 80 kDa polypeptides in epimastigotes and trypomastigotes, respectively, and a differential pattern of immunolocalization. Overall, the results suggest that Tc8.2 is differentially expressed during the T. cruzi life cycle.
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Affiliation(s)
- Danielle Kian
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | | | - Igor Alexandre Campos Damiani
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | | | - Phileno Pinge-Filho
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | | | - José Franco da Silveira
- Departamento de Microbiologia, Imunobiologia e Parasitologia, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Celso Vataru Nakamura
- Departamento de Ciências Básicas da Saúde, Centro de Ciências da Saúde, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - João Santana da Silva
- Departamento de Parasitologia, Microbiologia e Imunologia, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Lucy Megumi Yamauchi
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
- Corresponding author ()
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de Oliveira CF, Morey AT, Santos JP, Gomes LVP, Cardoso JD, Pinge-Filho P, Perugini MRE, Yamauchi LM, Yamada-Ogatta SF. Molecular and phenotypic characteristics of methicillin-resistant Staphylococcus aureus isolated from hospitalized patients. J Infect Dev Ctries 2015; 9:743-51. [PMID: 26230125 DOI: 10.3855/jidc.5868] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 12/09/2014] [Accepted: 12/16/2014] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Methicillin-resistant Staphylococcus aureus (MRSA) is one of the leading causes of infections acquired in both community and hospital settings. In this study, MRSA isolated from different sources of hospitalized patients was characterized by molecular and phenotypic methods. METHODOLOGY A total of 123 S. aureus isolates were characterized according to their genetic relatedness by repetitive element sequence based-PCR (REP-PCR), in vitro antimicrobial susceptibility profile, SCCmec typing and presence of seven virulence factor-encoding genes. RESULTS REP-PCR fingerprinting showed low relatedness between the isolates, and the predominance of one specific lineage or clonal group was not observed. All isolates were susceptible to teicoplanin and linezolide. All isolates were resistant to cefoxitin and penicillin, and the majority were also resistant to one or more other antimicrobials. Fifty isolates (41.7%) were intermediately resistant to vancomycin. Most isolates harbored SCCmec type II (53.7%), followed by type I (22.8%), type IV (8.1%) and type III (1.6%). All isolates harbored at least two virulence factor-encoding genes, and the prevalence was as follows: coa, 100%; icaA, 100%; hla, 13.0%; hlb, 91.1%, hld, 91.1%; lukS-PV and lukF-PV, 2.4%; and tst, 34.1%. A positive association with the presence of hla and SCCmec type II, and tst and SCCmec type I was observed. CONCLUSION This study showed the high virulence potential of multidrug-resistant MRSA circulating in a teaching hospital. A high prevalence of MRSA showing intermediate vancomycin resistance was also observed, indicating the urgent need to improve strategies for controlling the use of antimicrobials for appropriate management of S. aureus infections.
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Longhi C, Santos JP, Morey AT, Marcato PD, Durán N, Pinge-Filho P, Nakazato G, Yamada-Ogatta SF, Yamauchi LM. Combination of fluconazole with silver nanoparticles produced by Fusarium oxysporum improves antifungal effect against planktonic cells and biofilm of drug-resistant Candida albicans. Med Mycol 2015; 54:428-32. [PMID: 26092103 DOI: 10.1093/mmy/myv036] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [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: 04/22/2015] [Accepted: 04/25/2015] [Indexed: 11/13/2022] Open
Abstract
Silver nanoparticles (AgNPs) have been extensively studied because of their anti-microbial potential. Here, we evaluated the effect of biologically synthesized silver nanoparticles (AgNPbio) alone and in combination with fluconazole (FLC) against planktonic cells and biofilms of FLC-resistant Candida albicans AgNPbio exhibited a fungicidal effect, with a minimal inhibitory concentration (MIC) and fungicidal concentration ranging from 2.17 to 4.35 μg/ml. The combination of AgNPbio and FLC reduced the MIC of FLC around 16 to 64 times against planktonic cells of allC. albicans There was no significant inhibitory effect of AgNPbio on biofilm cells. However, FLC combined with AgNPbio caused a significant dose-dependent decrease in the viability of both initial and mature biofilm. All concentrations of AgNPbio, alone or in combination with FLC, were not cytotoxic to mammalian cells.The results highlight the effectiveness of the combination of AgNPbio with FLC against FLC-resistant C. albicans.
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Affiliation(s)
- Carline Longhi
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Jussevania Pereira Santos
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Alexandre Tadachi Morey
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil Programa Nacional de Pós Doutorado (PNPD), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brazil
| | - Priscyla Daniely Marcato
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Nelson Durán
- Instituto de Química, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Phileno Pinge-Filho
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Gerson Nakazato
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, PR, Brazil Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, PR, Brazil Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, PR, Brazil Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, PR, Brazil
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Seabra AB, Kitice NA, Pelegrino MT, Lancheros CAC, Yamauchi LM, Pinge-Filho P, Yamada-Ogatta SF. Nitric oxide-releasing polymeric nanoparticles against Trypanosoma cruzi. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1742-6596/617/1/012020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kanoshiki RL, de Paula SB, Santos JP, Morey AT, Souza NB, Yamauchi LM, Filho BPD, Yamada-Ogatta SF. Effects of fluconazole treatment of mice infected with fluconazole-susceptible and -resistant Candida tropicalis on fungal cell surface hydrophobicity, adhesion and biofilm formation. Indian J Med Microbiol 2015; 33 Suppl:97-101. [DOI: 10.4103/0255-0857.148834] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gomes LVP, Morey AT, Santos JP, Cardoso JD, Oliveira CF, Perugini MRE, Yamauchi LM, Ogatta SFY. Commensal and environmental vancomycin-resistant Enterococcus faecium isolated in hospital settings: genotypic diversity, antimicrobial resistance and virulence traits. Indian J Med Microbiol 2014; 32:345-7. [PMID: 25008838 DOI: 10.4103/0255-0857.136603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
| | | | | | | | | | | | | | - S F Y Ogatta
- Departamento de Microbiologia, Laboratório de Biologia Molecular de Microrganismos, Universidade Estadual de Londrina, PR, Brazil
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Otaguiri ES, Morguette AEB, Tavares ER, dos Santos PMC, Morey AT, Cardoso JD, Perugini MRE, Yamauchi LM, Yamada-Ogatta SF. Commensal Streptococcus agalactiae isolated from patients seen at University Hospital of Londrina, Paraná, Brazil: capsular types, genotyping, antimicrobial susceptibility and virulence determinants. BMC Microbiol 2013; 13:297. [PMID: 24359590 PMCID: PMC3878097 DOI: 10.1186/1471-2180-13-297] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [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] [Received: 05/26/2013] [Accepted: 12/16/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Streptococcus agalactiae or Group B Streptococci (GBS) have the ability to access various host sites, which reflects its adaptability to different environments during the course of infection. This adaptation is due to the expression of virulence factors that are involved with survival, invasion and bacterial persistence in the host. This study aimed to characterize GBS isolates from women of reproductive age seen at University Hospital of Londrina, according to capsular typing, genetic relatedness, antimicrobial susceptibility profile and occurrence of virulence determinants. RESULTS A total of 83 GBS isolates were enrolled in this study. Capsular types Ia (42.2%), II (10.8%), III (14.5%) and V (30.1%) were identified in most GBS. One isolate each was classified as type IX and non-typeable.A total of 15 multiple locus variable number of tandem repeat analysis (MLVA) types were identified among the isolates, seven were singletons and eight were represented by more than four isolates. All isolates were susceptible to penicillin, ampicillin, cefepime, cefotaxime, chloramphenicol, levofloxacin and vancomycin. Resistance to erythromycin and clindamycin was observed in 19.3 and 13.3% of isolates, respectively. All isolates resistant to clindamycin were simultaneously resistant to erythromycin and were distributed in the capsular types III and V. One isolate showed the constitutive macrolide-lincosamide-streptogramin B (cMLS(B)) phenotype and ten showed the inducible MLS(B) (iMLS(B)) phenotype. The mechanism of resistance to erythromycin and clindamycin more prevalent among these isolates was mediated by the gene ermA, alone or in combination with the gene ermB. The isolates displaying resistance only to erythromycin belonged to capsular type Ia, and showed the M phenotype, which was mediated by the mefA/E gene. All isolates harbored the gene hylB and at least one pilus variant, PI-1, PI-2a or PI-2b. Although cylE was observed in all GBS, four isolates were classified as gamma-hemolytic and carotenoid pigment non-producers. CONCLUSIONS Our results indicate the potential virulence of commensal GBS isolates, reinforcing the need for continued screening for this bacterium to prevent infections. The distribution of capsular and pili antigens, and MLVA profiles was also identified, which may contribute to the development of new strategies for the prevention and treatment of GBS infection.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Sueli Fumie Yamada-Ogatta
- Laboratório de Biologia Molecular de Microrganismos, Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445, km 380, Londrina, Paraná, CEP 86057-970, Brazil.
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Corrêa PRC, Miranda RRS, Duarte LP, Silva GDF, Filho SAV, Okuma AA, Carazza F, Morgado-Díaz JA, Pinge-Filho P, Yamauchi LM, Nakamura CV, Yamada-Ogatta SF. Antimicrobial activity of synthetic bornyl benzoates against Trypanosoma cruzi. Pathog Glob Health 2013; 106:107-12. [PMID: 22943546 DOI: 10.1179/2047773212y.0000000002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We report here for the first time the in vitro effects of (1S,2R,4S)-1,7,7-trimethyl-bicyclo[2·2·1]heptan-2-yl-3',4',5'-trimethoxy benzoate (1) and (1S,2R,4S)-1,7,7-trimethyl-bicyclo[2·2·1]heptan-2-yl benzoate (2) on the growth and ultrastructure of Trypanosoma cruzi. These two synthetic compounds exerted an antiproliferative effect on the epimastigote forms of the parasite. The ICs(50/72h) of two synthetic L-bornyl benzoates, 1 and 2, was 10·1 and 12·8 μg/ml, respectively. Both compounds were more selective against epimastigotes than HEp-2 cells. Ultrastructural analysis revealed intense cytoplasmic vacuolization and the appearance of cytoplasmic materials surrounded by membranes. The treatment of peritoneal macrophages with compounds 1 and 2 caused a significant decrease in the number of T. cruzi-infected cells. L-Bornyl benzoate derivatives may serve as a potential source for the development of more effective and safer chemotherapeutic agents against T. cruzi infections.
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Affiliation(s)
- P R C Corrêa
- Universidade Estadual de Londrina, Londrina, Paraná, Brazil
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Valdez RH, Tonin LTD, Ueda-Nakamura T, Silva SO, Dias Filho BP, Kaneshima EN, Yamada-Ogatta SF, Yamauchi LM, Sarragiotto MH, Nakamura CV. In vitro and in vivo trypanocidal synergistic activity of N-butyl-1-(4-dimethylamino)phenyl-1,2,3,4-tetrahydro-β-carboline-3-carboxamide associated with benznidazole. Antimicrob Agents Chemother 2012; 56:507-12. [PMID: 22037851 PMCID: PMC3256043 DOI: 10.1128/aac.05575-11] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 10/20/2011] [Indexed: 01/15/2023] Open
Abstract
American trypanosomiasis, or Chagas' disease, is caused by Trypanosoma cruzi and affects around 15 million people throughout the American continent. The available treatment is based on two nitroheterocyclic drugs, nifurtimox and benznidazole, both only partially effective and toxic. In this context, new drugs must be found. In our previous work, the tetrahydro-β-carboline compound N-butyl-1-(4-dimethylamino)phenyl-1,2,3,4-tetrahydro-β-carboline-3-carboxamide, named C4, showed a potent in vitro trypanocidal effect. The goal of this study was to evaluate the in vitro and in vivo trypanocidal effects of the compound C4 associated with other drugs (benznidazole, ketoconazole, and amphotericin B). For this, we used the checkerboard technique to analyze the effect of combinations of C4 reference drugs. C4 was assayed in a murine model alone as well as in association with benznidazole. We also evaluated the parasitemia, mortality, weight, and presence of amastigote nests in cardiac tissue. A synergic effect of C4 plus benznidazole against epimastigote and trypomastigote forms was observed in vitro, and in the murine model, we observed a substantial reduction in parasitemia levels and lowered mortality rates. These findings encourage supplementary investigations of carboline compounds as potential new trypanocidal drugs.
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Affiliation(s)
- Rodrigo Hinojosa Valdez
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | | | - Tânia Ueda-Nakamura
- Departamento de Ciências Básicas da Saúde, Laboratório de Microbiologia Aplicada aos Produtos Naturais e Sintéticos, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Sueli Oliveira Silva
- Departamento de Ciências Básicas da Saúde, Laboratório de Microbiologia Aplicada aos Produtos Naturais e Sintéticos, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Benedito Prado Dias Filho
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Departamento de Ciências Básicas da Saúde, Laboratório de Microbiologia Aplicada aos Produtos Naturais e Sintéticos, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Edilson Nobuyoshi Kaneshima
- Departamento de Ciências Básicas da Saúde, Laboratório de Microbiologia Aplicada aos Produtos Naturais e Sintéticos, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Sueli Fumie Yamada-Ogatta
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Lucy Megumi Yamauchi
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | | | - Celso Vataru Nakamura
- Programa de Pós-Graduação em Microbiologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
- Departamento de Ciências Básicas da Saúde, Laboratório de Microbiologia Aplicada aos Produtos Naturais e Sintéticos, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
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Botelho NS, de Paula SB, Panagio LA, Pinge-Filho P, Yamauchi LM, Yamada-Ogatta SF. Candida species isolated from urban bats of Londrina-Paraná, Brazil and their potential virulence. Zoonoses Public Health 2011; 59:16-22. [PMID: 21824363 DOI: 10.1111/j.1863-2378.2011.01410.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aim of this study was to isolate yeasts from the faeces of urban bats inhabiting the city of Londrina, Paraná, Brazil and to determine their potential virulence attributes. Seven (12.3%) of 57 bats screened in this study showed yeasts in their faeces. Five species of the genus Candida were isolated: C. guilliermondii, C. krusei, C. lusitaniae, C. parapsilosis, and C. pelliculosa. No phospholipase activity was detected in the egg yolk plate assay; however, all isolates demonstrated protease secretion in skim milk agar. Yeasts isolated from bats produced biofilm on the surface of polystyrene plates and all were classified as intermediate biofilm producers. Minimal inhibitory concentration (MIC) values for fluconazole in the yeasts varied according to the species. Only one isolate (M34 - C. lusitaniae) was considered susceptible dose-dependent to fluconazole. The yeasts were injected intravenously into Swiss mice, and at 15 days post-infection, the animals were killed and portions of their kidneys cultured on Sabouraud dextrose agar medium. All tissues analysed showed positive cultures of Candida spp. This is the first study evaluating the presence of fungi in the faeces of bats in an urban region, where the yeast species found were shown to be potentially pathogenic. As bats are commonly found in cities, these findings indicate the need for continuous surveillance concerning environmental contamination by their excreta.
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Affiliation(s)
- N S Botelho
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
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Arruda Campos Brasil de Souza T, Graça-de Souza VK, Lancheros CAC, Monteiro-Góes V, Krieger MA, Goldenberg S, Yamauchi LM, Yamada-Ogatta SF. Identification, Molecular and Functional Characterization of Calmodulin Gene of Phytomonas serpens 15T that Shares High Similarity with its Pathogenic Counterparts Trypanosoma cruzi. Protein J 2011; 30:212-9. [DOI: 10.1007/s10930-011-9322-4] [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: 10/18/2022]
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Panis C, Mazzuco TL, Costa CZF, Victorino VJ, Tatakihara VLH, Yamauchi LM, Yamada-Ogatta SF, Cecchini R, Rizzo LV, Pinge-Filho P. Trypanosoma cruzi: Effect of the absence of 5-lipoxygenase (5-LO)-derived leukotrienes on levels of cytokines, nitric oxide and iNOS expression in cardiac tissue in the acute phase of infection in mice. Exp Parasitol 2011; 127:58-65. [DOI: 10.1016/j.exppara.2010.06.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Revised: 06/25/2010] [Accepted: 06/28/2010] [Indexed: 10/19/2022]
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Benevides L, Milanezi CM, Yamauchi LM, Benjamim CF, Silva JS, Silva NM. CCR2 receptor is essential to activate microbicidal mechanisms to control Toxoplasma gondii infection in the central nervous system. Am J Pathol 2008; 173:741-51. [PMID: 18688032 DOI: 10.2353/ajpath.2008.080129] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Chemokines comprise a structurally related family of cytokines that regulate leukocyte trafficking. Because infection with Toxoplasma gondii can induce an important inflammatory reaction that, if left uncontrolled, can lead to death, we investigated the role of the chemokine receptor CCR2 in T. gondii infection. We orally infected CCR2(-/-) mice with five ME-49 T. gondii cysts and monitored morbidity, survival, and immune response thereafter. The CCR2(-/-) mice displayed higher susceptibility to infection as all mice died on day 28 after infection. Despite similar Th1 responses, a more evident anti-inflammatory response was induced in the peripheral organs of CCR2(-/-) mice compared with wild-type C57BL/6 mice. Additionally, CCR2(-/-) mice presented greater parasitism and a milder inflammatory reaction in their peripheral organs with lesser CD4(+) and MAC-1(+) and greater CD8(+) cell migration. The parasite load decreased in these organs in CCR2(-/-) mice but remained uncontrolled in the central nervous system. Additionally, we observed down-regulated inducible nitric oxide synthase expression in peripheral organs from CCR2(-/-) mice that was associated with a small nitric oxide production by spleen macrophages. In conclusion, in the absence of CCR2, another mechanism is activated to control tissue parasitism in peripheral organs. Nevertheless, CCR2 is essential for the activation of microbicidal mediators that control T. gondii replication in the central nervous system.
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Affiliation(s)
- Luciana Benevides
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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Affiliation(s)
- Lucy Megumi Yamauchi
- Department of Medical Parasitology, New York University School of Medicine341 East 25th Street, New York, NY 10010, USA
| | - Alida Coppi
- Department of Medical Parasitology, New York University School of Medicine341 East 25th Street, New York, NY 10010, USA
| | - Georges Snounou
- Parasitolgie Comparée et Modèle Expérimentaux, USM 0307, CNRS IFR101, Muséum National d'Histoire NaturelleCP52, 61 Rue Buffon, 75231 Paris Cedex 05, France
| | - Photini Sinnis
- Department of Medical Parasitology, New York University School of Medicine341 East 25th Street, New York, NY 10010, USA
- For correspondence. E-mail ; Tel. (+1) 212 263 6818; Fax (+1) 212 263 8116
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Abstract
Plasmodium sporozoites make a remarkable journey from the skin, where they are deposited by an infected Anopheline mosquito, to the liver, where they invade hepatocytes and develop into exoerythrocytic stages. Although much work has been done to elucidate the molecular mechanisms by which sporozoites invade hepatocytes, little is known about the interactions between host and parasite before the sporozoite enters the blood circulation. It has always been assumed that sporozoites rapidly exit the injection site, making their interactions with the host at this site, brief and difficult to study. Using quantitative PCR, we determined the kinetics with which sporozoites leave the injection site and arrive in the liver and found that the majority of infective sporozoites remain in the skin for hours. We then performed sub-inoculation experiments which confirmed these findings and showed that the pattern of sporozoite exit from the injection site resembles a slow trickle. Last, we found that drainage of approximately 20% of the sporozoite inoculum to the lymphatics is associated with a significant enlargement of the draining lymph node, a response not observed after intravenous inoculation. These findings indicate that there is ample time for host and parasite to interact at the inoculation site and are of relevance to the pre-erythrocytic stage malaria vaccine effort.
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Affiliation(s)
- Lucy Megumi Yamauchi
- Department of Medical Parasitology, New York University School of Medicine341 East 25th Street, New York, NY 10010, USA.
| | - Alida Coppi
- Department of Medical Parasitology, New York University School of Medicine341 East 25th Street, New York, NY 10010, USA.
| | - Georges Snounou
- Parasitolgie Comparée et Modèle Expérimentaux, USM 0307, CNRS IFR101, Muséum National d'Histoire NaturelleCP52, 61 Rue Buffon, 75231 Paris Cedex 05, France.
| | - Photini Sinnis
- Department of Medical Parasitology, New York University School of Medicine341 East 25th Street, New York, NY 10010, USA.
- *For correspondence. E-mail ; Tel. (+1) 212 263 6818; Fax (+1) 212 263 8116
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Carmo MS, Santos MR, Cummings LM, Araya JE, Yamauchi LM, Yoshida N, Mortara RA, Franco da Silveira J. Isolation and characterisation of genomic and cDNA clones coding for a serine-, alanine-, and proline-rich protein of Trypanosoma cruzi. Int J Parasitol 2001; 31:259-64. [PMID: 11226452 DOI: 10.1016/s0020-7519(00)00170-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We report here the isolation and characterisation of genomic and cDNA clones encoding a Serine-, Alanine-, and Proline-rich protein (SAP) of Trypanosoma cruzi metacyclic trypomastigotes. The deduced peptides translated from these clones were characterised by a high content of residues of alanine, proline, serine, glycine, valine, and threonine distributed in several repeats: P(2-4), S(2-3), A(2-3), AS, SA, PA, AP, SP, PS, and TP. The repeats are partially homologous to the serine-, alanine-, and proline-containing motifs of Leishmania major and Leishmania mexicana proteophosphoglycans. Genes coding for SAP are part of a polymorphic family whose members are linked to members of gp85/sialidase and mucin-like gene families. This is consistent with the hypothesis that this genetic organisation could be a means by which T. cruzi co-ordinates the expression of major surface proteins.
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Affiliation(s)
- M S Carmo
- Escola Paulista de Medicina, UNIFESP, Departamento de Microbiologia, Imunologia e Parasitologia, R. Botucatu, 862, CEP 04023-062, S. Paulo, Brazil
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Ramirez MI, Yamauchi LM, de Freitas LH, Uemura H, Schenkman S. The use of the green fluorescent protein to monitor and improve transfection in Trypanosoma cruzi. Mol Biochem Parasitol 2000; 111:235-40. [PMID: 11087935 DOI: 10.1016/s0166-6851(00)00309-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- M I Ramirez
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo, R. Botucatu, 862 8A, 04023-062 Sao Paulo S.P., Brazil
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Umezawa ES, Bastos SF, Camargo ME, Yamauchi LM, Santos MR, Gonzalez A, Zingales B, Levin MJ, Sousa O, Rangel-Aldao R, da Silveira JF. Evaluation of recombinant antigens for serodiagnosis of Chagas' disease in South and Central America. J Clin Microbiol 1999; 37:1554-60. [PMID: 10203520 PMCID: PMC84826 DOI: 10.1128/jcm.37.5.1554-1560.1999] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The commercially available diagnostic tests for Chagas' disease employ whole extracts or semipurified fractions of Trypanosoma cruzi epimastigotes. Considerable variation in the reproducibility and reliability of these tests has been reported by different research laboratories, mainly due to cross-reactivity with other pathogens and standardization of the reagents. The use of recombinant antigens for the serodiagnosis of Chagas' disease is recommended to increase the sensitivity and specificity of serological tests. Expressed in Escherichia coli, as fusion products with glutathione S-transferase, six T. cruzi recombinant antigens (H49, JL7, A13, B13, JL8, and 1F8) were evaluated in an enzyme-linked immunosorbent assay for Chagas' disease. The study was carried out with a panel of 541 serum samples of chagasic and nonchagasic patients from nine countries of Latin America (Argentina, Bolivia, Brazil, Chile, Colombia, El Salvador, Guatemala, Honduras, and Venezuela). The optimal concentration of each recombinant antigen for coating of plates was determined with the help of 125I-labelled recombinant proteins. While the specificity of the epimastigote antigen was 84% because of false positives from leishmaniasis cases, for the recombinant antigens it varied from 96.2 to 99.6%. Recombinant antigens reacted with 79 to 100% of serum samples from chronic chagasic patients. In this way, it is proposed that a mixture of a few T. cruzi recombinant antigens should be employed in a diagnostic kit to minimize individual variation and promote high sensitivity in the diagnosis of Chagas' disease.
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Affiliation(s)
- E S Umezawa
- Instituto de Medicina Tropical de São Paulo, FMUSP, São Paulo, Brazil.
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Pereira CM, Yamauchi LM, Levin MJ, da Silveira JF, Castilho BA. Mapping of B cell epitopes in an immunodominant antigen of Trypanosoma cruzi using fusions to the Escherichia coli LamB protein. FEMS Microbiol Lett 1998; 164:125-31. [PMID: 9675858 DOI: 10.1111/j.1574-6968.1998.tb13077.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The JL8 protein antigen from Trypanosoma cruzi, a dominant immunogen in man, has been characterized as containing tandem amino acid repeats. Here, we describe the use of the LamB protein of Escherichia coli as a carrier of JL8 derived sequences in order to map the immunodominant B cell epitopes in this antigen. Five different sequences of JL8 were inserted in the LamB protein and the JL8-LamB fusion proteins were tested by ELISA with human chronic chagasic sera. The fusion carrying the sequence AEKQKAAEATKVAE was recognized by most sera. This protein was also capable of inhibiting the binding of human chagasic antibodies to GST-JL8 in competitive ELISA suggesting that it contains an immunodominant B cell epitope of JL8.
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Affiliation(s)
- C M Pereira
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, UNIFESP, São Paulo, Brazil
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