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Ramalho F, Oliveira A, Machado A, Azevedo V, Gonçalves MR, Ntoumenopoulos G, Marques A. Physiotherapists in intensive care units: Where are we? Pulmonology 2024:S2531-0437(24)00016-3. [PMID: 38413343 DOI: 10.1016/j.pulmoe.2024.02.004] [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] [Received: 12/22/2023] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 02/29/2024] Open
Affiliation(s)
- F Ramalho
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal; Hospital Professor Doutor Fernando Fonseca, Lisbon, Portugal
| | - A Oliveira
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal; iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal; School of Rehabilitation Sciences, McMaster University, Canada
| | - A Machado
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal; iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - V Azevedo
- Centro Hospitalar Lisboa Ocidental - Egas Moniz Hospital - Polyvalent Intensive Care Unit, Alcoitão School of Health Sciences, Lisbon, Portugal
| | - M R Gonçalves
- Noninvasive Ventilatory Support Unit, Emergency and Intensive Care Medicine Department, Pulmonology Department, São João University Hospital. Faculty of Medicine, University of Porto, Portugal
| | - G Ntoumenopoulos
- Department of Physiotherapy, St Vincent's Hospital, Sydney, Australia
| | - A Marques
- Lab3R - Respiratory Research and Rehabilitation Laboratory, School of Health Sciences, University of Aveiro (ESSUA), Aveiro, Portugal; iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal.
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Patrão AL, McIntyre TM, Costa ECV, Matediane E, Azevedo V. Testing the effectiveness of two psychosocial interventions - ACCENT and Didactic - to prevent HIV/AIDS behavioral risk factors in Mozambican women: a randomized controlled study. AIDS Care 2024; 36:122-129. [PMID: 37490699 DOI: 10.1080/13548506.2023.2229236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 06/20/2023] [Indexed: 07/27/2023]
Abstract
In Mozambique, women are the most affected by HIV/AIDS and heterosexual encounters remain the main route for HIV/AIDS. Condom use is the most effective method of HIV/AIDS prevention, and the intention to use and buy/get condoms has a significant role in safe sex behavior. This study aimed to evaluate the efficacy of two psychosocial interventions - the Didactic and ACCENT Interventions - to prevent HIV/AIDS among Mozambican Women. Participants were Mozambican women (n = 150), users of the gynecology clinic of the Central Hospital of Beira. The study design was a randomized controlled trial (RCT) with assignment to three groups: Didactic intervention, ACCENT intervention, and Control group. Measures were from an adaption of the Women's Health Questionnaire, which includes questions about sociodemographic, clinical, and behavioral variables related to HIV prevention/risk. There was a significant group effect on condom use and safer sex preparatory behaviors, F(2, 146) = 6.45, p = .002, with Bonferroni post-hoc tests showing differences between the ACCENT vs. Control groups and ACCENT vs. Didactic groups (all p = .022). There were no statistically significant time effects on both condom use and safer sex preparatory behaviors. Results are promising for HIV/AIDS prevention in Mozambican women at sexual risk, but replication is needed for generalizability of findings.
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Affiliation(s)
- Ana Luísa Patrão
- Center for Psychology at University of Porto (CPUP), Faculty of Psychology and Educational Sciences of the University of Porto, University of Porto, Porto, Portugal
- Institute of Collective Health, Federal University of Bahia, Salvador - BA, Brazil
| | - Teresa M McIntyre
- Andy and Barbara Gessner College of Nursing and Texas Institute for Measurement, Evaluation, and Statistics, University of Houston, Houston, TX, USA
| | - Eleonora C V Costa
- Department of Psychology, Portuguese Catholic University, Braga, Portugal
| | - Eduardo Matediane
- Department of Gynaecology, Central Hospital of Beira, Beira, Mozambique
| | - Vanessa Azevedo
- Center for Psychology at University of Porto (CPUP), Faculty of Psychology and Educational Sciences of the University of Porto, University of Porto, Porto, Portugal
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Azevedo V, Daddiego L, Cardone MF, Perrella G, Sousa L, Santos RB, Malhó R, Bergamini C, Marsico AD, Figueiredo A, Alagna F. Transcriptomic and methylation analysis of susceptible and tolerant grapevine genotypes following Plasmopara viticola infection. Physiol Plant 2022; 174:e13771. [PMID: 36053855 PMCID: PMC9826190 DOI: 10.1111/ppl.13771] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/05/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Downy mildew, caused by the biotrophic oomycete Plasmopara viticola, is one of the most economically significant grapevine diseases worldwide. Current strategies to cope with this threat rely on the massive use of chemical compounds during each cultivation season. The economic costs and negative environmental impact associated with these applications increased the urge to search for sustainable strategies of disease control. Improved knowledge of plant mechanisms to counteract pathogen infection may allow the development of alternative strategies for plant protection. Epigenetic regulation, in particular DNA methylation, is emerging as a key factor in the context of plant-pathogen interactions associated with the expression modulation of defence genes. To improve our understanding of the genetic and epigenetic mechanisms underpinning grapevine response to P. viticola, we studied the modulation of both 5-mC methylation and gene expression at 6 and 24 h post-infection (hpi). Leaves of two table grape genotypes (Vitis vinifera), selected by breeding activities for their contrasting level of susceptibility to the pathogen, were analysed. Following pathogen infection, we found variations in the 5-mC methylation level and the gene expression profile. The results indicate a genotype-specific response to pathogen infection. The tolerant genotype (N23/018) at 6 hpi exhibits a lower methylation level compared to the susceptible one (N20/020), and it shows an early modulation (at 6 hpi) of defence and epigenetic-related genes during P. viticola infection. These data suggest that the timing of response is an important mechanism to efficiently counteract the pathogen attack.
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Affiliation(s)
- Vanessa Azevedo
- Faculdade de Ciências, Plant Biology Department, Biosystems & Integrative Sciences Institute (BioISI)Universidade de LisboaLisbonPortugal
| | - Loretta Daddiego
- Energy Technologies and Renewable Sources DepartmentNational Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research CentreRotondellaMateraItaly
| | - Maria Francesca Cardone
- Research Centre for Viticulture and EnologyCouncil for Agricultural Research and Economics (CREA)TuriBariItaly
| | | | - Lisete Sousa
- Department of Statistics and Operations Research, Faculdade de Ciências; Centre of Statistics and its Applications (CEAUL)Universidade de LisboaLisbonPortugal
| | - Rita B. Santos
- Faculdade de Ciências, Plant Biology Department, Biosystems & Integrative Sciences Institute (BioISI)Universidade de LisboaLisbonPortugal
| | - Rui Malhó
- Faculdade de Ciências, Plant Biology Department, Biosystems & Integrative Sciences Institute (BioISI)Universidade de LisboaLisbonPortugal
| | - Carlo Bergamini
- Research Centre for Viticulture and EnologyCouncil for Agricultural Research and Economics (CREA)TuriBariItaly
| | - Antonio Domenico Marsico
- Research Centre for Viticulture and EnologyCouncil for Agricultural Research and Economics (CREA)TuriBariItaly
| | - Andreia Figueiredo
- Faculdade de Ciências, Plant Biology Department, Biosystems & Integrative Sciences Institute (BioISI)Universidade de LisboaLisbonPortugal
| | - Fiammetta Alagna
- Energy Technologies and Renewable Sources DepartmentNational Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Trisaia Research CentreRotondellaMateraItaly
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Dambros VL, Gasparetto C, Costella G, Azevedo V, Trevizan S, Heck LH, Deboni GP, Fonseca RD, Costa MG. ANÁLISE DOS TRANSPLANTES DE MEDULA ÓSSEA REALIZADOS NO BRASIL ENTRE 2015 E 2020. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Patrão AL, McIntyre TM, Costa ECV, Matediane E, Azevedo V. Testing the Effectiveness of Two Psychosocial Interventions on Socio-Cognitive Risk Factors for HIV/AIDS in Mozambican Women: A Randomized Controlled Trial. AIDS Educ Prev 2021; 33:169-186. [PMID: 34014113 DOI: 10.1521/aeap.2021.33.3.169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The objective of this study was to evaluate the efficacy of two psychosocial interventions (Didactic and ACCENT) on socio-cognitive risk factors, in vulnerable Mozambican women at risk for HIV/AIDS infection. The study design was a randomized controlled trial on Mozambican women at HIV/AIDS risk (n = 150). The participants were randomized into three groups: Didactic Intervention (experimental group), ACCENT intervention (experimental group), and control group. We used an adapted version of the Women's Health Questionnaire, which includes a series of scales and questionnaires assessing psychosocial relevant dimensions to female protection towards HIV/AIDS: HIV/AIDS knowledge, condom use negotiation self-efficacy, and perceived barriers against safer sex. Both interventions were equally effective in increasing HIV/AIDS knowledge. The ACCENT intervention was especially effective in promoting condom use negotiation self-efficacy and in decreasing perceived barriers against safer sex, essential variables for sexual protection. These results support the adaptation of Western interventions to the African context.
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Affiliation(s)
- Ana Luísa Patrão
- University of Porto, Portugal and Federal University of Bahia, Brazil
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Azevedo V, Sani A, Nunes LM, Paulo D. Do you Feel Safe in the Urban Space? From Perceptions to Associated Variables. Anuario de Psicología Jurídica 2021. [DOI: 10.5093/apj2021a12] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Aburjaile F, Viana M, Cerqueira J, de Jesus L, da Silva T, Carvalho R, Azevedo V. Research Article Probiotic potential of novel Brazilian <i>Lactobacillus</i> <i>crispatus</i> strains. Genet Mol Res 2021. [DOI: 10.4238/gmr18900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Souza ELS, Campos CLV, Reis DC, Cassali GD, Generoso SV, Cardoso VN, Azevedo V, Medeiros JD, Fernandes GR, Nicoli JR, Martins FS. Beneficial effects resulting from oral administration of Escherichia coli Nissle 1917 on a chronic colitis model. Benef Microbes 2020; 11:779-790. [PMID: 33191778 DOI: 10.3920/bm2020.0045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 12/14/2022]
Abstract
Inflammatory bowel diseases (IBD) are chronic processes involving a deregulated immune response against intestinal microbiota in genetically susceptible individuals. Ulcerative colitis (UC) is an IBD restricted to colonic mucosa and its chronicity is a predisposing factor for colorectal cancer (CRC). Probiotics have been investigated as an adjuvant treatment for UC, and Escherichia coli Nissle 1917 (EcN) was the focus of our investigation. The aim of this study was to investigate the preventive effect of the EcN probiotic in an experimental model of chronic colitis in germ-free (GF) and conventional (CV) mice. CV female mice were used for clinical, immunological and permeability experiments. GF mice were used for a faecal microbiota transplantation assay. To induce colitis, three cycles of 3.0% dextran sulphate sodium (DSS) were administered to the animals. For probiotic treatment, the mice received a daily intragastric gavage of 9.0 log10 cfu of EcN, beginning 10 days before colitis induction and continuing until the end of the experiment. EcN presented beneficial effects when administered preventively. Daily Disease Activity Index (DAI) evolution demonstrated significant difference in remission periods after the first two DSS cycles and during the third one. Reduction in bacterial translocation after probiotic treatment indicated protection of the intestinal barrier. Associated with mucosal preservation, restoration of secretory immunoglobulin A levels and reduction of interleukin (IL)-5, IL-13, tumour necrosis factor and interferon-γ levels were observed in EcN treatment. Finally, when microbiota modification was verified, 16S rRNA-based compositional analysis showed variation of intestinal microbiota between the control and colitis groups. After faecal transplantation using GF mice, it was observed that EcN treatment in CV mice might result in modulated intestinal microbiota. This was observed indirectly in the reduced daily DAI, when colitis was compared with treated group. In conclusion, EcN presented beneficial effects in this model, suggesting its usefulness for treating UC.
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Affiliation(s)
- E L S Souza
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - C L V Campos
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - D C Reis
- Department of General Pathology, Federal University of Minas Gerais, Presidente Antônio Carlos 6627, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - G D Cassali
- Department of General Pathology, Federal University of Minas Gerais, Presidente Antônio Carlos 6627, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - S V Generoso
- Department of Nutrition, Federal University of Minas Gerais, Alfredo Balena 190, Belo Horizonte, CEP 30130-100, MG, Brazil
| | - V N Cardoso
- Department of Clinical and Toxicological Analysis, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - V Azevedo
- Department of Genetic, Ecology and Evolution, Federal University of Minas Gerais, Belo Horizonte, CEP 31330-500, MG, Brazil
| | - J D Medeiros
- René Rachou Institute - Fiocruz Minas, Augusto de Lima 1715, Belo Horizonte, MG, Brazil
| | - G R Fernandes
- René Rachou Institute - Fiocruz Minas, Augusto de Lima 1715, Belo Horizonte, MG, Brazil
| | - J R Nicoli
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
| | - F S Martins
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, CEP 31270-901, MG, Brazil
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Elmamoun M, Eraso M, Anderson M, Maharaj A, Coates L, Chandran V, Abogamal A, Adebajo AO, Ajibade A, Ayanlowo O, Azevedo V, Bautista-Molano W, Carneiro S, Goldenstein-Schainberg C, Hernandez-Velasco F, Ima-Edomwonyi U, Lima A, Medina-Rosas J, Mody GM, Narang T, Ortega-Loayza AG, Ranza R, Sharma A, Toloza S, Vega-Espinoza L, Vega-Hinojosa O. International league of associations for rheumatology recommendations for the management of psoriatic arthritis in resource-poor settings. Clin Rheumatol 2020; 39:1839-1850. [PMID: 31950441 PMCID: PMC7237392 DOI: 10.1007/s10067-020-04934-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 09/12/2019] [Revised: 12/26/2019] [Accepted: 01/06/2020] [Indexed: 01/17/2023]
Abstract
Background Psoriatic arthritis (PsA) is a challenging heterogeneous disease. The European League Against Rheumatism (EULAR) and the Group for Research and Assessment of Psoriasis and PsA (GRAPPA) last published their respective recommendations for the management of PsA in 2015. However, these guidelines are primarily based on studies conducted in resource replete countries and may not be applicable in countries in the Americas (except Canada and USA) and Africa. We sought to adapt the existing recommendations for these regions under the auspices of the International League of Associations for Rheumatology (ILAR). Process The ADAPTE Collaboration (2009) process for guideline adaptation was followed to adapt the EULAR and GRAPPA PsA treatment recommendations for the Americas and Africa. The process was conducted in three recommended phases: set-up phase; adaptation phase (defining health questions, assessing source recommendations, drafting report), and finalization phase (external review, aftercare planning, and final production). Result ILAR recommendations have been derived principally by adapting the GRAPPA recommendations, additionally, EULAR recommendations where appropriate and supplemented by expert opinion and literature from these regions. A paucity of data relevant to resource-poor settings was found in PsA management literature. Conclusion The ILAR Treatment Recommendations for PsA intends to serve as reference for the management of PsA in the Americas and Africa. This paper illustrates the experience of an international working group in adapting existing recommendations to a resource-poor setting. It highlights the need to conduct research on the management of PsA in these regions as data are currently lacking.Key Points • The paper presents adapted recommendations for the management of psoriatic arthritis in resource-poor settings. • The ADAPTE process was used to adapt existing GRAPPA and EULAR recommendations by collaboration with practicing clinicians from the Americas and Africa. • The evidence from resource-poor settings to answer clinically relevant questions was scant or non-existent; hence, a research agenda is proposed. |
Electronic supplementary material The online version of this article (10.1007/s10067-020-04934-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- M Elmamoun
- Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Canada
| | - M Eraso
- Centre for Prognosis Studies in the Rheumatic Diseases, Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, Canada
| | - M Anderson
- Library and Information Services, University Health Network, Toronto, Canada
| | - A Maharaj
- Prince Mshiyeni Memorial Hospital, Durban, South Africa
| | - L Coates
- University of Oxford, Oxford, UK
| | - Vinod Chandran
- Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Canada. .,Centre for Prognosis Studies in the Rheumatic Diseases, Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, Canada. .,Institute of Medical Science, University of Toronto, Toronto, Canada. .,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada. .,Department of Medicine, Memorial University, St. John's, Canada.
| | | | - A Abogamal
- Al-Azhar Faculty of Medicine Cairo, Nasr City, Egypt
| | - A O Adebajo
- University of Sheffield UK, Western Bank, Sheffield, S10 2TN, UK
| | - A Ajibade
- Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Osun state, Nigeria
| | - O Ayanlowo
- College of Medicine, University of Lagos/Lagos University Teaching Hospital Nigeria, Ishaga Rd, Idi-Araba, Lagos, Nigeria
| | - V Azevedo
- Federal University of Parana, Curitiba, PR, Brazil
| | - W Bautista-Molano
- University Hospital Fundación Santa Fe de Bogotá and School of Medicine Universidad Militar Nueva Granada, Bogota, Colombia
| | - S Carneiro
- State University of Rio de Janeiro and Federal University of Rio de Janeiro, Av. Pedro Calmon, 550 - Cidade Universitária da Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-901, Brazil
| | - C Goldenstein-Schainberg
- Disciplina de Reumatologia, LIM-17, Hospital das Clinicas HCFMUSP, Faculty of Medicine - University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | - U Ima-Edomwonyi
- College of Medicine, University of Lagos/Lagos University Teaching Hospital Nigeria, Ishaga Rd, Idi-Araba, Lagos, Nigeria
| | - A Lima
- Regional University of Blumenau (FURB), Blumenau, SC, Brazil
| | - J Medina-Rosas
- Posthumous, University of Valle, University of La Sabana, Imbanaco Medical Center, Cali, Colombia
| | - G M Mody
- University of KwaZulu-Natal, Durban, South Africa
| | - T Narang
- Post Graduate Institute of Medical Education & Research, Chandigarh, 160012, India
| | - A G Ortega-Loayza
- Oregon Health & Science University, 3181 S.W. Sam Jackson Park Rd, Portland, USA
| | - R Ranza
- Rheumatology Unit, Federal University of Uberlandia, Uberlândia, MG, Brazil
| | - A Sharma
- Post Graduate Institute of Medical Education & Research, Chandigarh, 160012, India
| | - S Toloza
- Ministry of Health, Catamarca, Catamarca, Argentina
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Azevedo V, Santana A, Lima do Nascimento T, Vasconcelos S. PNS58 RESULTADOS DE UM PROGRAMA DE ATENDIMENTO EM SAÚDE EM ÁREAS REMOTAS DA AMAZÔNIA OCIDENTAL BRASILEIRA. Value Health Reg Issues 2019. [DOI: 10.1016/j.vhri.2019.08.406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Almeida M, Carmo FD, Gala-García A, Kato R, Gomide A, Drummond R, Drumond M, Agresti P, Barh D, Brening B, Ghosh P, Silva A, Azevedo V, Viana M. Research Article <i>Lactobacillus</i> <i>crispatus</i> protects against bacterial vaginosis. Genet Mol Res 2019. [DOI: 10.4238/gmr18475] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Faria NR, Kraemer MUG, Hill SC, Goes de Jesus J, Aguiar RS, Iani FCM, Xavier J, Quick J, du Plessis L, Dellicour S, Thézé J, Carvalho RDO, Baele G, Wu CH, Silveira PP, Arruda MB, Pereira MA, Pereira GC, Lourenço J, Obolski U, Abade L, Vasylyeva TI, Giovanetti M, Yi D, Weiss DJ, Wint GRW, Shearer FM, Funk S, Nikolay B, Fonseca V, Adelino TER, Oliveira MAA, Silva MVF, Sacchetto L, Figueiredo PO, Rezende IM, Mello EM, Said RFC, Santos DA, Ferraz ML, Brito MG, Santana LF, Menezes MT, Brindeiro RM, Tanuri A, Dos Santos FCP, Cunha MS, Nogueira JS, Rocco IM, da Costa AC, Komninakis SCV, Azevedo V, Chieppe AO, Araujo ESM, Mendonça MCL, Dos Santos CC, Dos Santos CD, Mares-Guia AM, Nogueira RMR, Sequeira PC, Abreu RG, Garcia MHO, Abreu AL, Okumoto O, Kroon EG, de Albuquerque CFC, Lewandowski K, Pullan ST, Carroll M, de Oliveira T, Sabino EC, Souza RP, Suchard MA, Lemey P, Trindade GS, Drumond BP, Filippis AMB, Loman NJ, Cauchemez S, Alcantara LCJ, Pybus OG. Genomic and epidemiological monitoring of yellow fever virus transmission potential. Science 2018; 361:894-899. [PMID: 30139911 PMCID: PMC6874500 DOI: 10.1126/science.aat7115] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 07/20/2018] [Indexed: 12/21/2022]
Abstract
The yellow fever virus (YFV) epidemic in Brazil is the largest in decades. The recent discovery of YFV in Brazilian Aedes species mosquitos highlights a need to monitor the risk of reestablishment of urban YFV transmission in the Americas. We use a suite of epidemiological, spatial, and genomic approaches to characterize YFV transmission. We show that the age and sex distribution of human cases is characteristic of sylvatic transmission. Analysis of YFV cases combined with genomes generated locally reveals an early phase of sylvatic YFV transmission and spatial expansion toward previously YFV-free areas, followed by a rise in viral spillover to humans in late 2016. Our results establish a framework for monitoring YFV transmission in real time that will contribute to a global strategy to eliminate future YFV epidemics.
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Affiliation(s)
- N R Faria
- Department of Zoology, University of Oxford, Oxford, UK.
| | - M U G Kraemer
- Department of Zoology, University of Oxford, Oxford, UK
- Computational Epidemiology Lab, Boston Children's Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - S C Hill
- Department of Zoology, University of Oxford, Oxford, UK
| | - J Goes de Jesus
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - R S Aguiar
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - F C M Iani
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - J Xavier
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - J Quick
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | - L du Plessis
- Department of Zoology, University of Oxford, Oxford, UK
| | - S Dellicour
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
| | - J Thézé
- Department of Zoology, University of Oxford, Oxford, UK
| | - R D O Carvalho
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - G Baele
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
| | - C-H Wu
- Department of Statistics, University of Oxford, Oxford, UK
| | - P P Silveira
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - M B Arruda
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - M A Pereira
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - G C Pereira
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - J Lourenço
- Department of Zoology, University of Oxford, Oxford, UK
| | - U Obolski
- Department of Zoology, University of Oxford, Oxford, UK
| | - L Abade
- Department of Zoology, University of Oxford, Oxford, UK
- The Global Health Network, University of Oxford, Oxford, UK
| | - T I Vasylyeva
- Department of Zoology, University of Oxford, Oxford, UK
| | - M Giovanetti
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - D Yi
- Department of Statistics, Harvard University, Cambridge, MA, USA
| | - D J Weiss
- Malaria Atlas Project, Big Data Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - G R W Wint
- Department of Zoology, University of Oxford, Oxford, UK
| | - F M Shearer
- Malaria Atlas Project, Big Data Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - S Funk
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK
| | - B Nikolay
- Mathematical Modelling of Infectious Diseases and Center of Bioinformatics, Institut Pasteur, Paris, France
- CNRS UMR2000: Génomique Évolutive, Modélisation et Santé, Institut Pasteur, Paris, France
| | - V Fonseca
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- KwaZulu-Natal Research, Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - T E R Adelino
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - M A A Oliveira
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - M V F Silva
- Laboratório Central de Saúde Pública, Instituto Octávio Magalhães, FUNED, Belo Horizonte, Minas Gerais, Brazil
| | - L Sacchetto
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - P O Figueiredo
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - I M Rezende
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - E M Mello
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - R F C Said
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - D A Santos
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - M L Ferraz
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - M G Brito
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - L F Santana
- Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - M T Menezes
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - R M Brindeiro
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - A Tanuri
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - F C P Dos Santos
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - M S Cunha
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - J S Nogueira
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - I M Rocco
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - A C da Costa
- Instituto de Medicina Tropical e Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - S C V Komninakis
- Retrovirology Laboratory, Federal University of São Paulo, São Paulo, Brazil
- School of Medicine of ABC (FMABC), Clinical Immunology Laboratory, Santo André, São Paulo, Brazil
| | - V Azevedo
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - A O Chieppe
- Coordenação de Vigilância Epidemiológica do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - E S M Araujo
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - M C L Mendonça
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - C C Dos Santos
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - C D Dos Santos
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - A M Mares-Guia
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - R M R Nogueira
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - P C Sequeira
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - R G Abreu
- Departamento de Vigilância das Doenças Transmissíveis da Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília-DF, Brazil
| | - M H O Garcia
- Departamento de Vigilância das Doenças Transmissíveis da Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília-DF, Brazil
| | - A L Abreu
- Secretaria de Vigilância em Saúde, Coordenação Geral de Laboratórios de Saúde Pública, Ministério da Saúde, Brasília-DF, Brazil
| | - O Okumoto
- Secretaria de Vigilância em Saúde, Coordenação Geral de Laboratórios de Saúde Pública, Ministério da Saúde, Brasília-DF, Brazil
| | - E G Kroon
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - C F C de Albuquerque
- Organização Pan - Americana da Saúde/Organização Mundial da Saúde - (OPAS/OMS), Brasília-DF, Brazil
| | - K Lewandowski
- Public Health England, National Infections Service, Porton Down, Salisbury, UK
| | - S T Pullan
- Public Health England, National Infections Service, Porton Down, Salisbury, UK
| | - M Carroll
- NIHR HPRU in Emerging and Zoonotic Infections, Public Health England, London, UK
| | - T de Oliveira
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
- KwaZulu-Natal Research, Innovation and Sequencing Platform (KRISP), School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), Durban, South Africa
| | - E C Sabino
- Instituto de Medicina Tropical e Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - R P Souza
- Núcleo de Doenças de Transmissão Vetorial, Instituto Adolfo Lutz, São Paulo, Brazil
| | - M A Suchard
- Department of Biostatistics, UCLA Fielding School of Public Health, University of California, Los Angeles, CA, USA
- Department of Biomathematics and Human Genetics, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA, USA
| | - P Lemey
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
| | - G S Trindade
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - B P Drumond
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - A M B Filippis
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - N J Loman
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
| | - S Cauchemez
- Mathematical Modelling of Infectious Diseases and Center of Bioinformatics, Institut Pasteur, Paris, France
- CNRS UMR2000: Génomique Évolutive, Modélisation et Santé, Institut Pasteur, Paris, France
| | - L C J Alcantara
- Laboratório de Flavivírus, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil.
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - O G Pybus
- Department of Zoology, University of Oxford, Oxford, UK.
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Souza RFS, Rault L, Seyffert N, Azevedo V, Le Loir Y, Even S. Lactobacillus casei BL23 modulates the innate immune response in Staphylococcus aureus-stimulated bovine mammary epithelial cells. Benef Microbes 2018; 9:985-995. [PMID: 30041534 DOI: 10.3920/bm2018.0010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Probiotics have been adopted to treat and prevent various diseases in humans and animals. They were notably shown to be a promising alternative to prevent mastitis in dairy cattle. This inflammation of the mammary gland is generally of infectious origin and generates extensive economic losses worldwide. In a previous study, we found that Lactobacillus casei BL23 was able to inhibit the internalisation of Staphylococcus aureus, one of the major pathogens involved in mastitis, into bovine mammary epithelial cells (bMEC). In this study, we further explored the capacity of this strain to modulate the innate immune response of bovine mammary epithelial cells during S. aureus infection. L. casei BL23 was able to decrease the expression of several pro-inflammatory cytokines, including interleukins 6, 8, 1α and 1β and tumour necrosis factor alpha, in S. aureus-stimulated bMEC, 8 h post-infection. On the other hand, L. casei did not impair the induction of defensins, such as lingual antimicrobial peptide and defensin β1 in the presence of S. aureus, and even slightly increased the induction of tracheal antimicrobial peptide during S. aureus infection. Finally, this strain did not alter the expression of the pattern recognition receptor nucleotide-binding oligomerisation domain proteins (NOD2). This study demonstrates that L. casei BL23 displayed anti-inflammatory properties on S. aureus-stimulated bMEC. These results open the way to further characterisation of the BL23 probiotic potential in a bovine mammary gland context and to a better understanding of how all these beneficial properties combine in vivo to combat mastitis pathogens.
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Affiliation(s)
- R F S Souza
- 1 INRA, UMR 1253 STLO, 65 Rue de Saint-Brieuc, 35000 Rennes, France.,2 Agrocampus Ouest, UMR 1253 STLO, 85 Rue de Saint Brieuc, 35042 Rennes, France.,3 Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, 31270-901 MG, Brazil.,4 Universidade Federal do Vale do São Francisco, Av. José de Sá Maniçoba, S/N Centro, Petrolina, 56304-917 PE, Brazil
| | - L Rault
- 1 INRA, UMR 1253 STLO, 65 Rue de Saint-Brieuc, 35000 Rennes, France.,2 Agrocampus Ouest, UMR 1253 STLO, 85 Rue de Saint Brieuc, 35042 Rennes, France
| | - N Seyffert
- 3 Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, 31270-901 MG, Brazil
| | - V Azevedo
- 3 Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, 31270-901 MG, Brazil
| | - Y Le Loir
- 1 INRA, UMR 1253 STLO, 65 Rue de Saint-Brieuc, 35000 Rennes, France.,2 Agrocampus Ouest, UMR 1253 STLO, 85 Rue de Saint Brieuc, 35042 Rennes, France
| | - S Even
- 1 INRA, UMR 1253 STLO, 65 Rue de Saint-Brieuc, 35000 Rennes, France.,2 Agrocampus Ouest, UMR 1253 STLO, 85 Rue de Saint Brieuc, 35042 Rennes, France
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15
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Azevedo V, Carvalho M, Costa F, Mesquita S, Soares J, Teixeira F, Maia Â. Interview transcription: conceptual issues, practical guidelines, and challenges. Rev Enf Ref 2017. [DOI: 10.12707/riv17018] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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16
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Sousa CS, Barros BA, Barh D, Ghosh P, Azevedo V, Barros EG, Moreira MA. In silico characterization of 1,2-diacylglycerol cholinephosphotransferase and lysophospha-tidylcholine acyltransferase genes in Glycine max L. Merrill. Genet Mol Res 2016; 15:gmr8974. [PMID: 27706605 DOI: 10.4238/gmr.15038974] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The enzymes 1,2-diacylglycerol cholinephosphotrans-ferase (CPT) and lysophosphatidylcholine acyltransferase (LPCAT) are important in lipid metabolism in soybean seeds. Thus, understand-ing the genes that encode these enzymes may enable their modification and aid the improvement of soybean oil quality. In soybean, the genes encoding these enzymes have not been completely described; there-fore, this study aimed to identify, characterize, and analyze the in silico expression of these genes in soybean. We identified two gene models encoding CPT and two gene models encoding LPCAT, one of which presented an alternative transcript. The sequences were positioned on the physical map of soybean and the promoter regions were analyzed. Cis-elements responsible for seed-specific expression and responses to biotic and abiotic stresses were identified. Virtual expression analysis of the gene models for CPT and LPCAT indicated that these genes are expressed under different stress conditions, in somatic embryos during differentiation, in immature seeds, root tissues, and calli. Putative ami-no acid sequences revealed the presence of transmembrane domains, and analysis of the cellular localization of these enzymes revealed they are located in the endoplasmic reticulum.
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Affiliation(s)
- C S Sousa
- Departamento de Bioquímica e Biologia Molecular - BIOAGRO, Universidade Federal de Viçosa, Viçosa, MG, Brasil
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - B A Barros
- Empresa Brasileira de Pesquisa Agropecuária, Sete Lagoas, MG, Brasil
| | - D Barh
- Institute of Integrative Omics and Applied Biotechnology, Medinipur, WB, India
| | - P Ghosh
- Department of Computer Science, Virginia Commonwealth University, Richmond, VA, USA
| | - V Azevedo
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - E G Barros
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brasil
- Universidade Católica de Brasília, Brasília, DF, Brasil
| | - M A Moreira
- Departamento de Bioquímica e Biologia Molecular - BIOAGRO, Universidade Federal de Viçosa, Viçosa, MG, Brasil
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Spier SJ, Azevedo V. Corynebacterium pseudotuberculosis
infection in horses: Increasing frequency and spread to new regions of North America. EQUINE VET EDUC 2016. [DOI: 10.1111/eve.12589] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- S. J. Spier
- Department of Medicine and Epidemiology; School of Veterinary Medicine; University of California; Davis USA
| | - V. Azevedo
- Institute of Biological Sciences; Federal University of Minas Gerais; Belo Horizonte Brazil
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Aburjaile F, Madec MN, Parayre S, Miyoshi A, Azevedo V, Le Loir Y, Falentin H. The long-term survival of Propionibacterium freudenreichii
in a context of nutrient shortage. J Appl Microbiol 2016; 120:432-40. [DOI: 10.1111/jam.13000] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/15/2015] [Accepted: 11/03/2015] [Indexed: 11/27/2022]
Affiliation(s)
- F.F. Aburjaile
- Department of General Biology; Federal University of Minas Gerais; Belo Horizonte Minas Gerais Brazil
- INRA; UMR 1253; Science et Technologie du Lait et de l'Oeuf; Rennes France
- AGROCAMPUS OUEST; UMR1253; UMR Science et Technologie du Lait et de l'Oeuf; Rennes France
| | - M.-N. Madec
- INRA; UMR 1253; Science et Technologie du Lait et de l'Oeuf; Rennes France
- AGROCAMPUS OUEST; UMR1253; UMR Science et Technologie du Lait et de l'Oeuf; Rennes France
| | - S. Parayre
- INRA; UMR 1253; Science et Technologie du Lait et de l'Oeuf; Rennes France
- AGROCAMPUS OUEST; UMR1253; UMR Science et Technologie du Lait et de l'Oeuf; Rennes France
| | - A. Miyoshi
- Department of General Biology; Federal University of Minas Gerais; Belo Horizonte Minas Gerais Brazil
| | - V. Azevedo
- Department of General Biology; Federal University of Minas Gerais; Belo Horizonte Minas Gerais Brazil
| | - Y. Le Loir
- INRA; UMR 1253; Science et Technologie du Lait et de l'Oeuf; Rennes France
- AGROCAMPUS OUEST; UMR1253; UMR Science et Technologie du Lait et de l'Oeuf; Rennes France
| | - H. Falentin
- INRA; UMR 1253; Science et Technologie du Lait et de l'Oeuf; Rennes France
- AGROCAMPUS OUEST; UMR1253; UMR Science et Technologie du Lait et de l'Oeuf; Rennes France
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De Azevedo MSP, Santos Rocha C, Pereira VB, De Oliveira Junior AF, De Sousa CS, Azevedo V, LeBlanc JG, Chatel JM, Miyoshi A. Prospective uses of recombinant Lactococcus lactis expressing both listeriolysin O and mutated internalin A from Listeria monocytogenes as a tool for DNA vaccination. Genet Mol Res 2015; 14:18485-93. [PMID: 26782496 DOI: 10.4238/2015.december.23.36] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, Lactococcus lactis was engineered to express mutated internalin A on its surface and to secrete large amounts of listeriolysin O (LLO) in order to improve its potential as a vehicle for DNA vaccination. Western blotting experiments demonstrated that the bacterium expressed LLO in both the cytoplasmic and extracellular compartments, with higher quantities found in the culture supernatants. A hemolytic assay showed that the recombinant strain secreted 250 ng active LLO/mg total protein. This mInlA/LLO-producing strain of L. lactis may be used as an alternative tool in DNA vaccination against a number of infectious diseases or in cancer therapy.
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Affiliation(s)
- M S P De Azevedo
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - C Santos Rocha
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - V B Pereira
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - A F De Oliveira Junior
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - C S De Sousa
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - V Azevedo
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - J G LeBlanc
- CERELA-CONICET, Chacabuco 145, Tucuman, Argentina
| | - J M Chatel
- Institut National de la Recherche Agronomique, MICALIS (UMR 1319), Domaine de Vilvert, Jouy-en-Josas, France
| | - A Miyoshi
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Ferreira LJ, Azevedo V, Maroco J, Oliveira MM, Santos AP. Salt Tolerant and Sensitive Rice Varieties Display Differential Methylome Flexibility under Salt Stress. PLoS One 2015; 10:e0124060. [PMID: 25932633 PMCID: PMC4416925 DOI: 10.1371/journal.pone.0124060] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [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: 11/25/2014] [Accepted: 02/28/2015] [Indexed: 01/20/2023] Open
Abstract
DNA methylation has been referred as an important player in plant genomic responses to environmental stresses but correlations between the methylome plasticity and specific traits of interest are still far from being understood. In this study, we inspected global DNA methylation levels in salt tolerant and sensitive rice varieties upon salt stress imposition. Global DNA methylation was quantified using the 5-methylcytosine (5mC) antibody and an ELISA-based technique, which is an affordable and quite pioneer assay in plants, and in situ imaging of methylation sites in interphase nuclei of tissue sections. Variations of global DNA methylation levels in response to salt stress were tissue- and genotype-dependent. We show a connection between a higher ability of DNA methylation adjustment levels and salt stress tolerance. The salt-tolerant rice variety Pokkali was remarkable in its ability to quickly relax DNA methylation in response to salt stress. In spite of the same tendency for reduction of global methylation under salinity, in the salt-sensitive rice variety IR29 such reduction was not statistically supported. In 'Pokkali', the salt stress-induced demethylation may be linked to active demethylation due to increased expression of DNA demethylases under salt stress. In 'IR29', the induction of both DNA demethylases and methyltransferases may explain the lower plasticity of DNA methylation. We further show that mutations for epigenetic regulators affected specific phenotypic parameters related to salinity tolerance, such as the root length and biomass. This work emphasizes the role of differential methylome flexibility between salt tolerant and salt sensitive rice varieties as an important player in salt stress tolerance, reinforcing the need to better understand the connection between epigenetic networks and plant responses to environmental stresses.
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Affiliation(s)
- Liliana J. Ferreira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Genomics of Plant Stress. Av. da República, 2780–157 Oeiras, Portugal
| | - Vanessa Azevedo
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Genomics of Plant Stress. Av. da República, 2780–157 Oeiras, Portugal
| | - João Maroco
- UIPES, ISPA-Instituto Universitário, Lisbon, Portugal
| | - M. Margarida Oliveira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Genomics of Plant Stress. Av. da República, 2780–157 Oeiras, Portugal
| | - Ana Paula Santos
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Genomics of Plant Stress. Av. da República, 2780–157 Oeiras, Portugal
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Aslam B, Ahmad J, Ali A, Paracha RZ, Tareen SHK, Khusro S, Ahmad T, Muhammad SA, Niazi U, Azevedo V. Structural modeling and analysis of dengue-mediated inhibition of interferon signaling pathway. Genet Mol Res 2015; 14:4215-37. [PMID: 25966194 DOI: 10.4238/2015.april.28.4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Dengue virus (DENV) belongs to the family Flaviviridae and can cause major health problems worldwide, including dengue fever and dengue shock syndrome. DENV replicon in human cells inhibits interferon α and β with the help of its non-structural proteins. Non-structural protein 5 (NS5) of DENV is responsible for the proteasome-mediated degradation of signal transducer and activator of transcription (STAT) 2 protein, which has been implicated in the development of resistance against interferon-mediated antiviral effect. This degradation of STAT2 primarily occurs with the help of E3 ubiquitin ligases. Seven in absentia homologue (SIAH) 2 is a host protein that can mediate the ubiquitination of proteins and is known for its interaction with NS5. In this study, comprehensive computational analysis was performed to characterize the protein-protein interactions between NS5, SIAH2, and STAT2 to gain insight into the residues and sites of interaction between these proteins. The objective of the study was to structurally characterize the NS5-STAT2, SIAH2-STAT2, and NS5-SIAH2 interactions along with the determination of the possible reaction pattern for the degradation of STAT2. Docking and physicochemical studies indicated that DENV NS5 may first interact with the host SIAH2, which can then proceed towards binding with STAT2 from the side of SIAH2. These implications are reported for the first time and require validation by wet-lab studies.
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Affiliation(s)
- B Aslam
- Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - J Ahmad
- Research Center for Modeling & Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | | | - R Z Paracha
- Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - S H K Tareen
- Research Center for Modeling & Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | - S Khusro
- Department of Computer Science, University of Peshawar, Peshawar, Pakistan
| | - T Ahmad
- Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - S A Muhammad
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University Multan, Pakistan
| | | | - V Azevedo
- Laboratório de Genética Celular e Molecular, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Sinanovic E, Ramma L, Vassall A, Azevedo V, Wilkinson L, Ndjeka N, McCarthy K, Churchyard G, Cox H. Impact of reduced hospitalisation on the cost of treatment for drug-resistant tuberculosis in South Africa. Int J Tuberc Lung Dis 2015; 19:172-8. [PMID: 25574915 PMCID: PMC4447891 DOI: 10.5588/ijtld.14.0421] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING The cost of multidrug-resistant tuberculosis (MDR-TB) treatment is a major barrier to treatment scale-up in South Africa. OBJECTIVE To estimate and compare the cost of treatment for rifampicin-resistant tuberculosis (RR-TB) in South Africa in different models of care in different settings. DESIGN We estimated the costs of different models of care with varying levels of hospitalisation. These costs were used to calculate the total cost of treating all diagnosed cases of RR-TB in South Africa, and to estimate the budget impact of adopting a fully or partially decentralised model vs. a fully hospitalised model. RESULTS The fully hospitalised model was 42% more costly than the fully decentralised model (US$13,432 vs. US$7753 per patient). A much shorter hospital stay in the decentralised models of care (44-57 days), compared to 128 days of hospitalisation in the fully hospitalised model, was the key contributor to the reduced cost of treatment. The annual total cost of treating all diagnosed cases ranged from US$110 million in the fully decentralised model to US$190 million in the fully hospitalised model. CONCLUSION Following a more decentralised approach for treating RR-TB patients could potentially improve the affordability of RR-TB treatment in South Africa.
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Affiliation(s)
- E Sinanovic
- Health Economics Unit, School of Public Health & Family Medicine, University of Cape Town, Cape Town, South Africa
| | - L Ramma
- Health Economics Unit, School of Public Health & Family Medicine, University of Cape Town, Cape Town, South Africa
| | - A Vassall
- London School of Hygiene & Tropical Medicine, London, UK
| | - V Azevedo
- City Health, Cape Town Metro, South Africa
| | - L Wilkinson
- Médecins Sans Frontières, Khayelitsha, South Africa
| | - N Ndjeka
- TB Cluster, National Department of Health, Pretoria, South Africa
| | - K McCarthy
- Aurum Institute, Johannesburg, South Africa
| | | | - H Cox
- Division of Medical Microbiology and Institute for Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
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Bakhtiar SM, Ali A, Baig SM, Barh D, Miyoshi A, Azevedo V. Identifying human disease genes: advances in molecular genetics and computational approaches. Genet Mol Res 2014; 13:5073-87. [PMID: 25061732 DOI: 10.4238/2014.july.4.23] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The human genome project is one of the significant achievements that have provided detailed insight into our genetic legacy. During the last two decades, biomedical investigations have gathered a considerable body of evidence by detecting more than 2000 disease genes. Despite the imperative advances in the genetic understanding of various diseases, the pathogenesis of many others remains obscure. With recent advances, the laborious methodologies used to identify DNA variations are replaced by direct sequencing of genomic DNA to detect genetic changes. The ability to perform such studies depends equally on the development of high-throughput and economical genotyping methods. Currently, basically for every disease whose origen is still unknown, genetic approaches are available which could be pedigree-dependent or -independent with the capacity to elucidate fundamental disease mechanisms. Computer algorithms and programs for linkage analysis have formed the foundation for many disease gene detection projects, similarly databases of clinical findings have been widely used to support diagnostic decisions in dysmorphology and general human disease. For every disease type, genome sequence variations, particularly single nucleotide polymorphisms are mapped by comparing the genetic makeup of case and control groups. Methods that predict the effects of polymorphisms on protein stability are useful for the identification of possible disease associations, whereas structural effects can be assessed using methods to predict stability changes in proteins using sequence and/or structural information.
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Affiliation(s)
- S M Bakhtiar
- Department of Bioinformatics, Mohammad Ali Jinnah University, Islamabad Expressway, Islamabad, Pakistan
| | - A Ali
- Atta-ur-Rahman School of Applied Biosciences, National University of Science and Technology, Islamabad, Pakistan
| | - S M Baig
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| | - D Barh
- Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied Biotechnology, Nonakuri, Purba Medinipur, India
| | - A Miyoshi
- Laboratório de Genética Celular e Molecular, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - V Azevedo
- Laboratório de Genética Celular e Molecular, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Cox H, Hughes J, Daniels J, Azevedo V, McDermid C, Poolman M, Boulle A, Goemaere E, van Cutsem G. Community-based treatment of drug-resistant tuberculosis in Khayelitsha, South Africa. Int J Tuberc Lung Dis 2014; 18:441-8. [DOI: 10.5588/ijtld.13.0742] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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25
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Del Carmen S, Zurita-Turk M, Lima FA, Dos Santos JC, Leclercq S, Chatel JM, Azevedo V, De Moreno De Leblanc A, Miyoshi A, Leblanc J. A Novel Interleukin-10 Dna Mucosal Delivery System Attenuates Intestinal Inflammation in a Mouse Model. EUR J INFLAMM 2013. [DOI: 10.1177/1721727x1301100308] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Inflammatory bowel diseases (IBD) describe a group of complex intestinal disorders characterized by inflammation in the gastrointestinal tract. Current treatments for IBD include the use of antiinflammatory drugs; furthermore, recombinant lactic acid bacteria have been used as a therapeutic vehicle for anti-inflammatory agents in IBD models. Interleukin-10 (IL-10) is one of the most important anti-inflammatory cytokines; however, its oral administration is limited because it is quickly degraded in the gastrointestinal tract and systemic treatments have led to undesirable side effects. In this study, an engineered invasive strain of Lactococcus (L.) lactis producing Fibronectin Binding Protein A (FnBPA+), from Staphylococcus aureus capable of delivering, directly inside eukaryotic cells, an eukaryotic DNA expression vector containing the ORF coding for IL-10 of Mus musculus (pValac: il-10) was developed and its functionality was evaluated using in vitro and in vivo assays. Functionality of the plasmid and the invasive strain was demonstrated by transfection and invasiveness assays using cell cultures and in vivo in mice by fluorescence microscopy. TNBS inoculated mice that received this novel strain showed lower damage scores in their large intestines (at both macroscopic and microscopic levels), lower microbial translocation to liver, and increased anti-inflammatory/pro-inflammatory cytokine ratios compared to mice that received L. lactis FnBPA+ without the pValac: il-10 plasmid. The effectiveness was demonstrated of this novel DNA delivery therapeutic strategy in the prevention of inflammation using a murine model of colitis.
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Affiliation(s)
- S. Del Carmen
- Centro de Referenciapara Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Argentina (T4000ILC)
| | - M. Zurita-Turk
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - F. Alvarenga Lima
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - J.S. Coelho Dos Santos
- Laboratório de Inovação Biotecnológica, Fundação Ezequiel Dias (FUNED), Belo Horizonte, Minas Gerais, Brasil
| | - S.Y. Leclercq
- Laboratório de Inovação Biotecnológica, Fundação Ezequiel Dias (FUNED), Belo Horizonte, Minas Gerais, Brasil
| | - J.-M. Chatel
- INRA, UMR1319 Micalis, Commensal and Probiotics-Host Interactions Laboratory, Jouy-en-Josas Cedex, France
| | - V. Azevedo
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - A. De Moreno De Leblanc
- Centro de Referenciapara Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Argentina (T4000ILC)
| | - A. Miyoshi
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais (ICB/UFMG), Belo Horizonte, Brazil
| | - J.G. Leblanc
- Centro de Referenciapara Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Argentina (T4000ILC)
- Cátedra de Metodologia de la Investigación Cientifíca, Facultad de Medicina, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
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26
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Santos AR, Barbosa E, Fiaux K, Zurita-Turk M, Chaitankar V, Kamapantula B, Abdelzaher A, Ghosh P, Tiwari S, Barve N, Jain N, Barh D, Silva A, Miyoshi A, Azevedo V. PANNOTATOR: an automated tool for annotation of pan-genomes. Genet Mol Res 2013; 12:2982-9. [PMID: 24065654 DOI: 10.4238/2013.august.16.2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Due to next-generation sequence technologies, sequencing of bacterial genomes is no longer one of the main bottlenecks in bacterial research and the number of new genomes deposited in public databases continues to increase at an accelerating rate. Among these new genomes, several belong to the same species and were generated for pan-genomic studies. A pan-genomic study allows investigation of strain phenotypic differences based on genotypic differences. Along with a need for good assembly quality, it is also fundamental to guarantee good functional genome annotation of the different strains. In order to ensure quality and standards for functional genome annotation among different strains, we developed and made available PANNOTATOR (http://bnet.egr.vcu.edu/iioab/agenote.php), a web-based automated pipeline for the annotation of closely related and well-suited genomes for pan-genome studies, aiming at reducing the manual work to generate reports and corrections of various genome strains. PANNOTATOR achieved 98 and 76% of correctness for gene name and function, respectively, as result of an annotation transfer, with a similarity cut-off of 70%, compared with a gold standard annotation for the same species. These results surpassed the RAST and BASys softwares by 41 and 21% and 66 and 17% for gene name and function annotation, respectively, when there were reliable genome annotations of closely related species. PANNOTATOR provides fast and reliable pan-genome annotation; thereby allowing us to maintain the research focus on the main genotype differences between strains.
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Affiliation(s)
- A R Santos
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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27
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Pereira UP, Soares SC, Blom J, Leal CAG, Ramos RTJ, Guimarães LC, Oliveira LC, Almeida SS, Hassan SS, Santos AR, Miyoshi A, Silva A, Tauch A, Barh D, Azevedo V, Figueiredo HCP. In silico prediction of conserved vaccine targets in Streptococcus agalactiae strains isolated from fish, cattle, and human samples. Genet Mol Res 2013; 12:2902-12. [PMID: 24065646 DOI: 10.4238/2013.august.12.6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Streptococcus agalactiae (Lancefield group B; group B streptococci) is a major pathogen that causes meningoencephalitis in fish, mastitis in cows, and neonatal sepsis and meningitis in humans. The available prophylactic measures for conserving human and animal health are not totally effective and have limitations. Effective vaccines against the different serotypes or genotypes of pathogenic strains from the various hosts would be useful. We used an in silico strategy to identify conserved vaccine candidates in 15 genomes of group B streptococci strains isolated from human, bovine, and fish samples. The degree of conservation, subcellular localization, and immunogenic potential of S. agalactiae proteins were investigated. We identified 36 antigenic proteins that were conserved in all 15 genomes. Among these proteins, 5 and 23 were shared only by human or fish strains, respectively. These potential vaccine targets may help develop effective vaccines that will help prevent S. agalactiae infection.
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Affiliation(s)
- U P Pereira
- AQUAVET - Laboratório de Doenças de Animais Aquáticos, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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28
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Carneiro S, Bortoluzzo A, Gonçalves C, Silva J, Ximenes A, Bértolo M, Ribeiro S, Keiserman M, Menin R, Azevedo V, Vieira W, Albuquerque E, Bianchi W, Bonfiglioli R, Campanholo C, Carvalho M, Costa I, Duarte A, Gavi M, Cohen C, Leite N, Lima S, Meirelles E, Pereira I, Pinheiro M, Polito E, Resende G, Rocha F, Santiago M, Sauma M, Skare T, Sampaio-Barros P. SAT0281 Impact of enthesitis in 1505 brazilian patients with spondyloarthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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29
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de Azevedo M, Innocentin S, Dorella F, Rocha C, Mariat D, Pontes D, Miyoshi A, Azevedo V, Langella P, Chatel JM. Immunotherapy of allergic diseases using probiotics or recombinant probiotics. J Appl Microbiol 2013; 115:319-33. [DOI: 10.1111/jam.12174] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 02/01/2013] [Accepted: 02/18/2013] [Indexed: 12/11/2022]
Affiliation(s)
- M.S.P. de Azevedo
- Laboratório de Genética Celular e Molecular; Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais (ICB/UFMG); Belo Horizonte MG, Brazil
- INRA; UMR1319 Micalis; Jouy-en-Josas France
- AgroParisTech; UMR Micalis; Jouy-en-Josas France
| | - S. Innocentin
- INRA; UMR1319 Micalis; Jouy-en-Josas France
- AgroParisTech; UMR Micalis; Jouy-en-Josas France
- Lymphocyte Signalling and Development Laboratory; Babraham Institute; Babraham Research Campus; Cambridge CB22 3AT UK
| | - F.A. Dorella
- Laboratório de Genética Celular e Molecular; Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais (ICB/UFMG); Belo Horizonte MG, Brazil
| | - C.S. Rocha
- Laboratório de Genética Celular e Molecular; Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais (ICB/UFMG); Belo Horizonte MG, Brazil
| | - D. Mariat
- INRA; UMR1319 Micalis; Jouy-en-Josas France
- AgroParisTech; UMR Micalis; Jouy-en-Josas France
| | - D.S. Pontes
- Departamento de Ciências Biológicas; Universidade Estadual da Paraíba; Campus V; João Pessoa PB, Brazil
| | - A. Miyoshi
- Laboratório de Genética Celular e Molecular; Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais (ICB/UFMG); Belo Horizonte MG, Brazil
| | - V. Azevedo
- Laboratório de Genética Celular e Molecular; Instituto de Ciências Biológicas; Universidade Federal de Minas Gerais (ICB/UFMG); Belo Horizonte MG, Brazil
| | - P. Langella
- INRA; UMR1319 Micalis; Jouy-en-Josas France
- AgroParisTech; UMR Micalis; Jouy-en-Josas France
| | - J.-M. Chatel
- INRA; UMR1319 Micalis; Jouy-en-Josas France
- AgroParisTech; UMR Micalis; Jouy-en-Josas France
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30
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Dorneles EMS, Santana JA, Andrade GI, Santos ELS, Guimarães AS, Mota RA, Santos AS, Miyoshi A, Azevedo V, Gouveia AMG, Lage AP, Heinemann MB. Molecular characterization of Corynebacterium pseudotuberculosis isolated from goats using ERIC-PCR. Genet Mol Res 2012; 11:2051-9. [PMID: 22911589 DOI: 10.4238/2012.august.6.9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Corynebacterium pseudotuberculosis, the infectious agent of caseous lymphadenitis (CLA), is responsible for substantial economic losses in goat and sheep production. Molecular characterization of C. pseudotuberculosis isolates by enterobacterial repetitive intergenic consensus (ERIC)-PCR has shown promising results in genotyping strains isolated from sheep with CLA. We evaluated the genetic diversity of C. pseudotuberculosis isolates collected from the Sertão region of the Pernambuco (PE) State, Brazil, and investigated the potential of ERIC-PCR as a tool for the molecular typing of strains of C. pseudotuberculosis isolated from goats. Thirty-two C. pseudotuberculosis strains isolated from goats in the municipalities of Floresta and Ibimirim, PE, C. pseudotuberculosis type strain ATCC 19410, the 1002 vaccine strain, and a field isolate of Rhodococcus equi were fingerprinted using the primers ERIC-1R and ERIC-2 and the primer pair ERIC- 1R+ERIC-2. Using 100% similarity as the cutoff, 8, 10, and 7 genotypes were obtained with ERIC-1-PCR, ERIC-2-PCR, and ERIC-1+2-PCR, respectively. The Hunter-Gaston discriminatory index calculated for the ERIC-1-PCR was 0.75. The index for the ERIC-2-PCR was 0.88, and the index for the ERIC-1+2-PCR was 0.79. Among goat isolates of C. pseudotuberculosis, three, two and four genotypes (found by ERIC-1-PCR, ERIC-2-PCR, and ERIC-1+2-PCR, respectively) had been previously described among sheep isolates from Minas Gerais State, Brazil. These results showed that ERIC-PCR has good discriminatory power and typeability, making it a useful tool for discrimination among C. pseudotuberculosis isolates from goats.
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Affiliation(s)
- E M S Dorneles
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Carmo FD, Guimarães A, Pauletti R, Lage A, Gonçalves V, Meyer R, Portela R, Miyoshi A, Azevedo V, Gouveia A, Heinemann M. Prevalência de anticorpos contra a linfadenite caseosa em criações comerciais de ovinos no Distrito Federal, Brasil. Arq Inst Biol 2012. [DOI: 10.1590/s1808-16572012000200020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
O objetivo deste trabalho foi determinar a prevalência de anticorpos contra linfadenite caseosa (LC) em rebanhos ovinos comerciais do Distrito Federal (DF). Foram coletadas 1.028 amostras de soro entre março e junho de 2004, de todas as propriedades (32) do Distrito Federal com pelo menos 20 fêmeas adultas no rebanho. A soroprevalência da linfadenite caseosa foi determinada por ELISA com proteínas secretadas de Corynebacterium pseudotuberculosis. Cinquenta por cento das 32 propriedades apresentaram pelo menos um animal soropositivo para o LC e a prevalência real para animais foi de 44,0% (IC 95: 41,0; 47,0), portanto, esses dados sugerem que a LC está presente em rebanhos ovinos comerciais no Distrito Federal.
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Affiliation(s)
| | - A.S. Guimarães
- Escola de Veterinária, Brasil; Embrapa Gado de Leite, Brasil
| | | | | | | | - R. Meyer
- Universidade Federal da Bahia, Brasil
| | | | - A. Miyoshi
- Universidade Federal de Minas Gerais, Brasil
| | - V. Azevedo
- Universidade Federal de Minas Gerais, Brasil
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de Azevedo MSP, Rocha CS, Electo N, Pontes DS, Molfetta JB, Gonçalves EDC, Azevedo V, Silva CL, Miyoshi A. Cytoplasmic and extracellular expression of pharmaceutical-grade mycobacterial 65-kDa heat shock protein in Lactococcus lactis. Genet Mol Res 2012; 11:1146-57. [PMID: 22614283 DOI: 10.4238/2012.april.27.14] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Lactic acid bacteria (LAB) are an attractive and safe alternative for the expression of heterologous proteins, as they are nonpathogenic and endotoxin-free organisms. Lactococcus lactis, the LAB model organism, has been extensively employed in the biotechnology field for large-scale production of heterologous proteins, and its use as a "cell factory" has been widely studied. We have been particularly interested in the use of L. lactis for production of heat shock proteins (HSPs), which reportedly play important roles in the initiation of innate and adaptive immune responses. However, this activity has been questioned, as LPS contamination appears to be responsible for most, if not all, immunostimulatory activity of HSPs. In order to study the effect of pure HSPs on the immune system, we constructed recombinant L. lactis strains able to produce and properly address the Mycobacterium leprae 65-kDa HSP (Hsp65) to the cytoplasm or to the extracellular medium, using a xylose-induced expression system. Approximately 7 mg/L recombinant Hsp65 was secreted. Degradation products related to lactococcal HtrA activity were not observed, and the Limulus amebocyte lysate assay demonstrated that the amount of LPS in the recombinant Hsp65 preparations was 10-100 times lower than the permitted levels established by the U.S. Food and Drug Administration. These new L. lactis strains will allow investigation of the effects of M. leprae Hsp65 without the interference of LPS; consequently, they have potential for a variety of biotechnological, medical and therapeutic applications.
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Affiliation(s)
- M S P de Azevedo
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Abstract
The large number of microbial genomes deposited in databanks has opened the door for in-depth studies of organisms, including post-genomics investigations. Thanks to new generation sequencing technology, these studies have made advances that have lead to extraordinary discoveries in bacterial transcriptomics. In this review, we describe bacterial RNA sequencing studies that use these new techniques. We also examined the advantages and biases of these new generation technologies; advances in bioinformatics make it possible to overcome the biases, providing interesting and surprising results.
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Affiliation(s)
- A C Pinto
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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34
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Soares SC, Dorella FA, Pacheco LGC, Hirata R, Mattos-Guaraldi AL, Azevedo V, Miyoshi A. Plasticity of Corynebacterium diphtheriae pathogenicity islands revealed by PCR. Genet Mol Res 2011; 10:1290-4. [PMID: 21732292 DOI: 10.4238/vol10-2gmr1211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Despite the existence of a vaccine against diphtheria, this disease remains endemic and is reemerging in several regions due to many factors, including variations in genes coding for virulence factors. One common feature of virulence factors is their high concentration in pathogenicity islands (PAIs), very unstable regions acquired via horizontal gene transfer, which has lead to the emergence of various bacterial pathogens. The 13 putative PAIs in Corynebacterium diphtheriae NCTC 13129 and the reemergence of this disease point to the great variability in the PAIs of this species, which may reflect on bacterial life style and physiological versatility. We investigated the relationships between the large number of PAIs in C. diphtheriae and the possible implications of their plasticity in virulence. The GenoFrag software was used to design primers to analyze the genome plasticity of two pathogenicity islands of the reference strain (PiCds 3 and 8) in 11 different strains. We found that PiCd 3 was absent in only two strains, showing genes playing putative important roles in virulence and that only one strain harbored PiCd 8, due to its location in a putative "hotspot" for horizontal gene transfer events.
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Affiliation(s)
- S C Soares
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Marinho FAV, Pacífico LGG, Miyoshi A, Azevedo V, Le Loir Y, Guimarães VD, Langella P, Cassali GD, Fonseca CT, Oliveira SC. An intranasal administration of Lactococcus lactis strains expressing recombinant interleukin-10 modulates acute allergic airway inflammation in a murine model. Clin Exp Allergy 2011; 40:1541-51. [PMID: 20412136 DOI: 10.1111/j.1365-2222.2010.03502.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Around 300 million people world-wide suffer from asthma, and the prevalence of allergic diseases has increased. Much effort has been used in the study of mechanisms involved in the immune response observed in asthma to intervene for the treatment of this condition. During inflammation in asthma, Th2 cytokines and eosinophils are essential components of the host immune system. Furthermore, for therapeutic interventions against this disease, IL-10 is an important cytokine because it has a central role in the regulation of inflammatory cascades. OBJECTIVE To evaluate the immunomodulatory effect of Lactococcus lactis strains expressing recombinant IL-10 in a mouse model of ovalbumin (OVA)-induced acute airway inflammation. METHODS L. lactis expressing recombinant IL-10 in a cytoplasmic (LL-CYT) or secreted form (LL-SEC) and wild-type (LL-WT) were used. IL-10 production by the recombinant strains was evaluated by ELISA. After an intranasal administration of L. lactis producing recombinant IL-10 and the induction of acute allergic airway inflammation in mice, blood samples were collected to detect IgE anti-OVA, and bronchoalveolar lavage (BAL) was harvested for eosinophil count. Additionally, the lungs were collected for the detection of the eosinophil peroxidase (EPO) activity, measurement of cytokines and chemokines and evaluation of pathology. RESULTS Mice that received LL-CYT and LL-SEC strains showed a significant decrease in eosinophils numbers, EPO activity, anti-OVA IgE and IgG1 levels, IL-4 and CCL3 production and pulmonary inflammation and mucus hypersecretion, compared with the asthmatic group. Only the LL-CYT/OVA group showed reduced levels of IL-5, CCL2, CCL5 and CCL11. CONCLUSION Treatment with L. lactis producing recombinant IL-10 used in this study (LL-CYT and LL-SEC) modulated experimental airway inflammation in the mouse model independently of Treg cells. Additionally, the LL-CYT strain was more efficient in the suppression of lung inflammation.
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Affiliation(s)
- F A V Marinho
- Department of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais Minas Gerais, Belo Horizonte, MG, Brazil
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Le Maréchal C, Jan G, Even S, McCulloch JA, Azevedo V, Thiéry R, Vautor E, Le Loir Y. Development of serological proteome analysis of mastitis by Staphylococcus aureus in ewes. J Microbiol Methods 2009; 79:131-6. [PMID: 19735677 DOI: 10.1016/j.mimet.2009.08.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 08/26/2009] [Accepted: 08/28/2009] [Indexed: 10/20/2022]
Abstract
Staphylococcus aureus is a major agent of mastitis in ruminants worldwide. So far, efficient measures for its prophylaxis (including vaccination) have proven to be unsuccessful and there is a need for a better understanding of the host response to udder infection by S. aureus. Serological proteome analysis (SERPA) is a promising technique that can be used to identify S. aureus immuno-dominant determinants providing that bacterial culture conditions used to grow S. aureus strains for protein sample preparation mimic the context of mastitis. A S. aureus strain was used in experimental mastitis to generate sheep serum used to determine the best growth conditions for SERPA. Sera collected in the field from different ewes suffering from mastitis by S. aureus were used to confirm experimental observations. Three different culture media (BHI, whey and iron-depleted RPMI) were tested. The influence of aeration and growth phase on protein production was also evaluated by immuno-detection of protein samples prepared from cultures grown in different conditions and obtained from different culture fractions (supernatant, cell wall, and total lysates). Our results showed that culturing in iron-depleted RPMI with (secreted proteins, prepared from stationary phase) or without aeration (cell wall proteins, prepared from early stationary phase, and total proteins, prepared from exponential phase) is the condition that best mimics growth in vivo during mastitis and this in vitro growth condition is to be used henceforth in experiments involving SERPA.
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Affiliation(s)
- C Le Maréchal
- INRA, UMR1253 STLO, 85 Rue de Saint Brieuc, 35042 Rennes Cedex, France
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37
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Seyffert N, Guimarães AS, Pacheco LGC, Portela RW, Bastos BL, Dorella FA, Heinemann MB, Lage AP, Gouveia AMG, Meyer R, Miyoshi A, Azevedo V. High seroprevalence of caseous lymphadenitis in Brazilian goat herds revealed by Corynebacterium pseudotuberculosis secreted proteins-based ELISA. Res Vet Sci 2009; 88:50-5. [PMID: 19665155 DOI: 10.1016/j.rvsc.2009.07.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 06/02/2009] [Accepted: 07/03/2009] [Indexed: 11/28/2022]
Abstract
We conducted a seroepidemiological survey to determine the prevalence of caseous lymphadenitis (CLA) in goat herds in Minas Gerais state, Brazil. Serum samples were collected from goats (n=676) from 108 rural properties in 2001, covering most of the sub-regions of this ca. 586,500 square kilometer state. Antibodies against Corynebacterium pseudotuberculosis secreted proteins were detected by an indirect enzyme-linked immunosorbent assay (ELISA). Most of the animals (78.9%) tested positive for CLA; 98% of flocks presented at least one seropositive animal. Goats managed under an extensive production system had a significantly higher seroprevalence of CLA than those in intensive and semi-intensive operations. The age distribution of the animals in the flocks affected the prevalence of this disease; however, goat breed did not. We found seropositivity against C. pseudotuberculosis to be highly prevalent in these Brazilian goat herds; consequently, appropriate management practices for the control of CLA should be implemented.
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Affiliation(s)
- N Seyffert
- Laboratório de Genética Celular e Molecular, Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, CP 486, CEP 31270-901, Belo Horizonte, MG, Brazil
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38
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Oliveira MN, Almeida KE, Damin MR, Rochat T, Gratadoux JJ, Miyoshi A, Langella P, Azevedo V. Behavior and viability of spontaneous oxidative stress-resistant Lactococcus lactis mutants in experimental fermented milk processing. Genet Mol Res 2009; 8:840-7. [PMID: 19731206 DOI: 10.4238/vol8-3gmr635] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Previously, we isolated two strains of spontaneous oxidative (SpOx2 and SpOx3) stress mutants of Lactococcus lactis subsp cremoris. Herein, we compared these mutants to a parental wild-type strain (J60011) and a commercial starter in experimental fermented milk production. Total solid contents of milk and fermentation temperature both affected the acidification profile of the spontaneous oxidative stress-resistant L. lactis mutants during fermented milk production. Fermentation times to pH 4.7 ranged from 6.40 h (J60011) to 9.36 h (SpOx2); V(max) values were inversely proportional to fermentation time. Bacterial counts increased to above 8.50 log(10) cfu/mL. The counts of viable SpOx3 mutants were higher than those of the parental wild strain in all treatments. All fermented milk products showed post-fermentation acidification after 24 h of storage at 4 degrees C; they remained stable after one week of storage.
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Affiliation(s)
- M N Oliveira
- Departamento de Tecnologia Farmacêutica e Bioquímica, Universidade de São Paulo, São Paulo, SP, Brasil.
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39
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Luvizotto MCR, Carreira VS, Ferrari HF, Ribeiro D, Vallim MA, Azevedo V, Cardoso TC. Brain and lung cryptococcoma and concurrent corynebacterium pseudotuberculosis infection in a goat: a case report. J Venom Anim Toxins Incl Trop Dis 2009. [DOI: 10.1590/s1678-91992009000300015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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40
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Alves PDD, McCulloch JA, Even S, Le Maréchal C, Thierry A, Grosset N, Azevedo V, Rosa CA, Vautor E, Le Loir Y. Molecular characterisation of Staphylococcus aureus strains isolated from small and large ruminants reveals a host rather than tissue specificity. Vet Microbiol 2008; 137:190-5. [PMID: 19157725 DOI: 10.1016/j.vetmic.2008.12.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 12/10/2008] [Accepted: 12/12/2008] [Indexed: 11/30/2022]
Abstract
Staphylococcus aureus is an important pathogen in domestic ruminants. The main objective of this study was to determine the similarity of epidemiologically unrelated S. aureus isolates from bovine, ovine, and caprine hosts regardless the locus of isolation (nares and udder). By pulsed-field gel electrophoresis, seven major pulsotypes were identified among 153 isolates recovered from 12 different regions of France as well as from Brazil, the USA and Belgium. Typing of the accessory gene regulator (agr) and capsular (cap) serotype was carried out on all the isolates and revealed the predominance of agr I and III and of cap8 regardless the ruminant host species. Screening for methicilin-resistant S. aureus (MRSA) was carried out by disk diffusion and revealed a prevalence of only 3.2% of MRSA among the strains tested. These results suggest the existence of a host rather than tissue specificity among S. aureus isolates colonising the ruminant species and suggest a limited transmission of those isolates between large (bovine) and small (ovine-caprine) ruminants. The agr class and cap types correlated with pulsotype clusters rather than with a specific host species. Antimicrobial resistance appears not to have contributed to the predominance of any given genotypes, and MRSA prevalence appears very low in ruminant isolates.
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Affiliation(s)
- P D D Alves
- INRA, UMR1253 STLO, 85 rue de Saint Brieuc, 35042 Rennes, France
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41
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Ascensão A, Azevedo V, Ferreira R, Oliveira E, Marques F, Magalhães J. Physiological, biochemical and functional changes induced by a simulated 30 min off-road competitive motocross heat. J Sports Med Phys Fitness 2008; 48:311-319. [PMID: 18974716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM Up to now, few studies regarding the impact of motocross heats on functional and physiological variables have been addressed so far. The aim of the present study was to analyze physiological and functional changes induced by a simulated off-road motocross heat. METHODS Fifteen motocross riders (28.3+/-7.9 yrs; 71.1+/-7.0 kg; 169.0+/-4.0 cm; 53.5+/-3.7 mL.kg(-1).min(-1); 14.9+/-3.3% fat) performed one treadmill running to exhaustion to determine maximal heart rate (HRmax) and maximal oxygen consumption. Thereafter, simulated 30 min competitive off-road motocross heats were performed to measure biochemical (blood lactate and urine catecholamine concentrations) and functional (upper-limb power and fatigue--Wingate and Handgrip) alterations induced by the race. Exercise intensity through HR monitoring, rating of perceived exertion and upper-limb pain were also accomplished. RESULTS During the 30 min heats, the riders spent 87% of time above 90% of their HRmax. Significant impairments were observed on maximal isometric handgrip as well as on Wingate variables after the race. Blood lactate concentrations significantly increased from rest vs 10 min, 20 min and final time of analysis (P < 0.05). However, a significant decrease was observed between 10 min vs 20 min and final of the race. A significant increase in the 24-h urine catecholamine levels was observed after the race. CONCLUSION The present data suggest that motocross heats are performed at high exercise intensity. Motocross specific effort induces significant functional alterations that may reflect muscle fatigue with consequent decrement on physical performance.
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Affiliation(s)
- A Ascensão
- Research Centre in Physical Activity, Health and Leisure, University of Porto, Porto, Portugal.
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42
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Caligiorne RB, Resende MA, Melillo PHC, Peluso CP, Carmo FHS, Azevedo V. In vitro susceptibility of chromoblastomycosis and phaeohyphomycosis agents to antifungal drugs. Med Mycol 2008. [DOI: 10.1111/j.1365-280x.1999.00245.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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43
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Mattos-Guaraldi AL, Sampaio JLM, Santos CS, Pimenta FP, Pereira GA, Pacheco LGC, Miyoshi A, Azevedo V, Moreira LO, Gutierrez FL, Costa JLF, Costa-Filho R, Damasco PV, Camello TCF, Hirata Jr R. First detection of Corynebacterium ulcerans producing a diphtheria-like toxin in a case of human with pulmonary infection in the Rio de Janeiro metropolitan area, Brazil. Mem Inst Oswaldo Cruz 2008; 103:396-400. [DOI: 10.1590/s0074-02762008000400014] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2007] [Accepted: 06/05/2008] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - JLM Sampaio
- Fleury Centro de Medicina Diagnóstica, Brasil
| | - CS Santos
- Universidade do Estado do Rio de Janeiro, Brasil; Universidade Federal do Rio de Janeiro, Brasil
| | - FP Pimenta
- Universidade do Estado do Rio de Janeiro, Brasil
| | - GA Pereira
- Universidade do Estado do Rio de Janeiro, Brasil
| | - LGC Pacheco
- Universidade Federal de Minas Gerais, Brasil
| | - A Miyoshi
- Universidade Federal de Minas Gerais, Brasil
| | - V Azevedo
- Universidade Federal de Minas Gerais, Brasil
| | - LO Moreira
- Universidade do Estado do Rio de Janeiro, Brasil
| | | | | | | | - PV Damasco
- Universidade do Estado do Rio de Janeiro, Brasil; Universidade Federal do Estado do Rio de Janeiro, Brasil
| | - TCF Camello
- Universidade do Estado do Rio de Janeiro, Brasil
| | - R Hirata Jr
- Universidade do Estado do Rio de Janeiro, Brasil
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D'Afonseca V, Moraes PM, Dorella FA, Pacheco LGC, Meyer R, Portela RW, Miyoshi A, Azevedo V. A description of genes of Corynebacterium pseudotuberculosis useful in diagnostics and vaccine applications. Genet Mol Res 2008; 7:252-60. [PMID: 18551390 DOI: 10.4238/vol7-1gmr438] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Corynebacterium pseudotuberculosis, a Gram-positive intracellular pathogen, is the etiological agent of caseous lymphadenitis or CLA. This bacterium infects goats and sheep and causes great economic losses worldwide annually, mainly for goat producers. Despite its importance, CLA is still poorly characterized. However, with advances in the genomic field, many C. pseudotuberculosis genes have already been characterized, mainly those related to virulence such as phospholipase D. Here, we examined the use of the several available genes of C. pseudotuberculosis and reviewed their applications in vaccine construction, more efficient diagnostics for CLA, and control of this disease, among other applications.
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Affiliation(s)
- V D'Afonseca
- Laboratório de Genética Celular e Molecular, Departamento de Biologia Geral, ICB-UFMG, Belo Horizonte, MG, Brasil
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45
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Stehling EG, Campos TA, Azevedo V, Brocchi M, Silveira WD. DNA sequencing of a pathogenicity-related plasmid of an avian septicemic Escherichia coli strain. Genet Mol Res 2007; 6:331-7. [PMID: 17573664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A 43-MDa conjugative plasmid isolated from an avian septicemic Escherichia coli (APEC) strain possessing genes related to the adhesion and invasion capacities of in vitro-cultured cells was sequenced. The results demonstrated that the 43-MDa plasmid harbors bacterial pathogenicity-related sequences which probably allow the wild-type pathogenic strain to adhere to and invade tissues and to cause septicemia in poultry. The existence of homology sequences to sequences belonging to other human pathogenic Enterobacteriaceae like Escherichia coli O157:H7, Shigella and Salmonella was also observed. The presence of these sequences in this plasmid could indicate that there is horizontal genetic transfer between bacterial strains isolated from different host species. In conclusion, the present study suggests that APEC strains harbor high-molecular weight plasmids that present pathogenicity-related sequences and that these are probably responsible for the pathogenicity exhibited by these strains. The presence of human pathogenicity-associated sequences in APEC conjugative plasmids suggests that these strains could represent a zoonotic risk.
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Affiliation(s)
- E G Stehling
- Departamento de Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas, SP, Brasil
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46
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Dorella FA, Fachin MS, Billault A, Dias Neto E, Soravito C, Oliveira SC, Meyer R, Miyoshi A, Azevedo V. Construction and partial characterization of a Corynebacterium pseudotuberculosis bacterial artificial chromosome library through genomic survey sequencing. Genet Mol Res 2006; 5:653-63. [PMID: 17183477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Corynebacterium pseudotuberculosis is a gram-positive bacterium that causes caseous lymphadenitis in sheep and goats. However, despite the economic losses caused by caseous lymphadenitis, there is little information about the molecular mechanisms of pathogenesis of this bacterium. Genomic libraries constructed in bacterial artificial chromosome (BAC) vectors have become the method of choice for clone development in high-throughput genomic-sequencing projects. Large-insert DNA libraries are useful for isolation and characterization of important genomic regions and genes. In order to identify targets that might be useful for genome sequencing, we constructed a C. pseudotuberculosis BAC library in the vector pBeloBAC11. This library contains about 18,000 BAC clones, with inserts ranging in size from 25 to 120 kb, theoretically representing a 390-fold coverage of the C. pseudotuberculosis genome (estimated to be 2.5-3.1 Mb). Many genomic survey sequences (GSSs) with homology to C. diphtheriae, C. glutamicum, C. efficiens, and C. jeikeium proteins were observed within a sample of 215 sequenced clones, confirming their close phylogenetic relationship. Computer analyses of GSSs did not detect chimeric, deleted, or rearranged BAC clones, showing that this library has low redundancy. This GSSs collection is now available for further genetic and physical analysis of the C. pseudotuberculosis genome. The GSS strategy that we used to develop our library proved to be efficient for the identification of genes and will be an important tool for mapping, assembly, comparative, and functional genomic studies in a C. pseudotuberculosis genome sequencing project that will begin this year.
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Affiliation(s)
- F A Dorella
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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47
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Cardoso FC, Pinho JMR, Azevedo V, Oliveira SC. Identification of a new Schistosoma mansoni membrane-bound protein through bioinformatic analysis. Genet Mol Res 2006; 5:609-18. [PMID: 17183472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Progress in schistosome genome research has enabled investigators to move rapidly from genome sequences to vaccine development. Proteins bound to the surface of parasites are potential vaccine candidates, or they can be used for diagnosis. We analyzed 4342 proteins deduced from the Schistosoma mansoni transcriptome with bioinformatic computer programs. Thirty-four proteins had membrane-bound motifs. Within this group, we selected the Sm29 protein to be further characterized by in silico analysis. Sm29 was found to have a signal peptide made up of 26 amino acids, with a cleavage site between Ser26 and Val27. The glycosylation site search revealed three threonines (39, 132 and 133) with high probability of O-glycosylation and two asparagines (58 and 115) with high probability of N-glycosylation. Only one transmembrane helix was found in the C-terminal region of the protein from Leu169 to Lis191. The search for similarities and conserved motifs show that Sm29 is a protein with high identity to proteins present in S. japonicum (53, 52, 49, and 37% of identity) and it possesses disulfide-rich conserved domains. Apparently, Sm29 is a membrane bound protein, and it may be an important molecule in host-parasite interactions.
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Affiliation(s)
- F C Cardoso
- Departamento de Bioquímica e Imunologia, Instituto de Investigação em Imunologia, Instituto do Milênio, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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48
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Cortes-Perez NG, Poquet I, Oliveira M, Gratadoux JJ, Madsen SM, Miyoshi A, Corthier G, Azevedo V, Langella P, Bermúdez-Humarán LG. Construction and characterization of a Lactococcus lactis strain deficient in intracellular ClpP and extracellular HtrA proteases. Microbiology (Reading) 2006; 152:2611-2618. [PMID: 16946256 DOI: 10.1099/mic.0.28698-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A Lactococcus lactis strain deficient in both its major proteases, intracellular (ClpP) and extracellular (HtrA), was constructed and characterized. This strain, hereafter called clpP-htrA, could be obtained only by conjugation between a clpP donor strain and an htrA recipient strain in the NZ9000 context, allowing heterologous gene expression under the control of the NICE (nisin-controlled expression) system. The clpP-htrA double mutant showed both higher stress tolerance (e.g. high temperature and ethanol resistance) and higher viability than single clpP or htrA mutant strains. In addition, the secretion rate of two heterologous proteins (staphylococcal nuclease Nuc and Nuc-E7) was also higher in clpP-htrA than in the wild-type strain. This strain should be a useful host for high-level production and quality of stable heterologous proteins.
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Affiliation(s)
- N G Cortes-Perez
- Unité d'Ecologie et de Physiologie du Système Digestif, INRA, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
| | - I Poquet
- Unité des Bactéries Lactiques et Pathogènes Opportunistes, INRA, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
| | - M Oliveira
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, Minas Gerais, Brazil
- Unité d'Ecologie et de Physiologie du Système Digestif, INRA, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
| | - J J Gratadoux
- Unité d'Ecologie et de Physiologie du Système Digestif, INRA, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
| | | | - A Miyoshi
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, Minas Gerais, Brazil
| | - G Corthier
- Unité d'Ecologie et de Physiologie du Système Digestif, INRA, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
| | - V Azevedo
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, Minas Gerais, Brazil
| | - P Langella
- Unité d'Ecologie et de Physiologie du Système Digestif, INRA, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
| | - L G Bermúdez-Humarán
- Unité d'Ecologie et de Physiologie du Système Digestif, INRA, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
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49
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Dorella FA, Estevam EM, Cardoso PG, Savassi BM, Oliveira SC, Azevedo V, Miyoshi A. An improved protocol for electrotransformation of Corynebacterium pseudotuberculosis. Vet Microbiol 2006; 114:298-303. [PMID: 16442751 DOI: 10.1016/j.vetmic.2005.12.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 01/31/2005] [Revised: 12/09/2005] [Accepted: 12/13/2005] [Indexed: 10/25/2022]
Abstract
We developed an improved protocol for the electrotransformation of Corynebacterium pseudotuberculosis, testing variations of parameters in the procedures that are routinely used for the preparation of electrocompetent cells of this species, including (i) culture conditions, (ii) cell growth phase, (iii) electroporation solutions and (iv) quantity of plasmid DNA. We obtained the greatest efficiency of transformation when the cells were grown until the stationary phase and then washed with 10% glycerol electroporation solution. The transformation efficiency was inversely proportional to the quantity of plasmid DNA. The transformation efficiency reached 10(5) colony-forming units (cfu)/mug plasmid DNA. This protocol would be useful for genetic studies of C. pseudotuberculosis.
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Affiliation(s)
- F A Dorella
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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50
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Rochat T, Miyoshi A, Gratadoux JJ, Duwat P, Sourice S, Azevedo V, Langella P. High-level resistance to oxidative stress in Lactococcus lactis conferred by Bacillus subtilis catalase KatE. Microbiology 2005; 151:3011-3018. [PMID: 16151211 DOI: 10.1099/mic.0.27861-0] [Citation(s) in RCA: 43] [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] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Lactococcus lactis, a lactic acid bacterium widely used for food fermentations, is often exposed to damaging stress conditions. In particular, oxidative stress leads to DNA, protein and membrane damages that can be lethal. As L. lactis has no catalase, the impact of production of the Bacillus subtilis haem catalase KatE on its oxidative stress resistance was tested. This cytoplasmic catalase was engineered for extracellular expression in L. lactis with an optimization strategy based on fusion to the nisin-inducible promoter and a lactococcal signal peptide (SP(Usp45)). The production of KatE by L. lactis conferred an 800-fold increase in survival after 1 h exposure to 4 mM hydrogen peroxide, and a 160-fold greater survival in long-term (3 days) survival of aerated cultures in a cydA mutant, which is unable to respire. The presence of KatE protected DNA from oxidative damage and limited its degradation after long-term aeration in a cydA/recA mutant, defective in DNA repair. L. lactis is thus able to produce active catalase that can provide efficient antioxidant activity.
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Affiliation(s)
- T Rochat
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - A Miyoshi
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, MG, Brazil
| | - J J Gratadoux
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - P Duwat
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - S Sourice
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - V Azevedo
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, MG, Brazil
| | - P Langella
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
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