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Founou LL, Khan UB, Medugu N, Pinto TCA, Darboe S, Chendi Z, Founou RC, To KN, Jamrozy D, Karampatsas K, Carr VR, Pepper K, Dangor Z, Ip M, Le Doare K, Bentley SD. Molecular epidemiology of Streptococcus agalactiae in non-pregnant populations: a systematic review. Microb Genom 2023; 9. [PMID: 38019122 DOI: 10.1099/mgen.0.001140] [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] [Indexed: 11/30/2023] Open
Abstract
Streptococcus agalactiae (group B Streptococcus, GBS) has recently emerged as an important pathogen among adults. However, it is overlooked in this population, with all global efforts being directed towards its containment among pregnant women and neonates. This systematic review assessed the molecular epidemiology and compared how the lineages circulating among non-pregnant populations relate to those of pregnant and neonatal populations worldwide. A systematic search was performed across nine databases from 1 January 2000 up to and including 20 September 2021, with no language restrictions. The Joanna Briggs Institute (JBI) Prevalence Critical Appraisal Tool (PCAT) was used to assess the quality of included studies. The global population structure of GBS from the non-pregnant population was analysed using in silico typing and phylogenetic reconstruction tools. Twenty-four articles out of 13 509 retrieved across 9 databases were eligible. Most studies were conducted in the World Health Organization European region (12/24, 50 %), followed by the Western Pacific region (6/24, 25 %) and the Americas region (6/24, 25 %). Serotype V (23%, 2310/10240) and clonal complex (CC) 1 (29 %, 2157/7470) were the most frequent serotype and CC, respectively. The pilus island PI1 : PI2A combination (29 %, 3931/13751) was the most prevalent surface protein gene, while the tetracycline resistance tetM (55 %, 5892/10624) was the leading antibiotic resistance gene. This study highlights that, given the common serotype distribution identified among non-pregnant populations (V, III, Ia, Ib, II and IV), vaccines including these six serotypes will provide broad coverage. The study indicates advanced molecular epidemiology studies, especially in resource-constrained settings for evidence-based decisions. Finally, the study shows that considering all at-risk populations in an inclusive approach is essential to ensure the sustainable containment of GBS.
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Affiliation(s)
- Luria Leslie Founou
- Reproductive, Maternal, Newborn and Child Health (ReMARCH) Research Unit, Centre of Expertise and Biological Diagnostic of Cameroon Research Institute (CEDBCAM-RI), Yaoundé, Cameroon
- Bioinformatics and Applied Machine Learning Research Unit, EDEN Biosciences Research Institute (EBRI), EDEN Foundation, Yaoundé, Cameroon
- Antimicrobial Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4041, South Africa
| | - Uzma Basit Khan
- Parasites and Microbes, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK
| | - Nubwa Medugu
- Department of Medical Microbiology and Parasitology, National Hospital Abuja, Abuja, Nigeria
| | - Tatiana C A Pinto
- Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Saffiatou Darboe
- Medical Research Council Unit at London School of Hygiene and Tropical Medicine, Banjul, Gambia
| | - Zhu Chendi
- Department of Microbiology, the Chinese University of Hong Kong, Hong Kong, PR China
| | - Raspail Carrel Founou
- Antibiotic Resistance Infectious Diseases (ARID) Research Unit, Centre of Expertise and Biological Diagnostic of Cameroon Research Institute (CEDBCAM-RI), Yaoundé, Cameroon
- Antimicrobial Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban, 4041, South Africa
- Department of Microbiology, Hematology and Immunology, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon
| | - Ka-Ning To
- Institute of Infection and Immunity, St George's University of London, London, UK
| | - Dorota Jamrozy
- Parasites and Microbes, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK
| | | | - Victoria R Carr
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, SE1 9RT, UK
- Parasites and Microbes, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK
| | - Kevin Pepper
- Parasites and Microbes, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK
| | - Ziyaad Dangor
- Vaccines and Infectious Diseases Analytics (VIDA) Research Unit, University of the Witwatersrand, Johannesburg, South Africa
| | - Margaret Ip
- Department of Microbiology, the Chinese University of Hong Kong, Hong Kong, PR China
| | - Kirsty Le Doare
- Medical Research Council Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, Entebbe, Uganda
| | - Stephen D Bentley
- Department of Pathology, University of Cambridge, Cambridge, UK
- Parasites and Microbes, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK
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Pinto TN, Kohn A, da Costa GL, Oliveira LMA, Pinto TCA, Oliveira MME. Candida guilliermondii as an agent of postpartum subacute mastitis in Rio de Janeiro, Brazil: Case report. Front Microbiol 2022; 13:964685. [PMID: 36212821 PMCID: PMC9537450 DOI: 10.3389/fmicb.2022.964685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Candida spp. can cause mild-to-severe human infections. Certain species have been described as the etiologic agent of human mastitis, inflammation of the breast tissue. Mastitis affects millions of lactating women and can be a source of disease transmission to the infant. In this work, we report the detection of the unusual etiologic agent of human mastitis, Candida guilliermondii, isolated from the milk of a puerperal woman with subacute mastitis in Rio de Janeiro, Brazil. Species identification was performed by MALDI-TOF MS and genetic sequencing. The patient had a full recovery after antifungal therapy.
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Affiliation(s)
- Tatiane Nobre Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alana Kohn
- Instituto Fernandes Figueira, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Laura M. A. Oliveira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tatiana C. A. Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Manoel M. E. Oliveira
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
- *Correspondence: Manoel M. E. Oliveira, ;
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Oliveira LMA, Simões LC, Costa NS, Zadoks RN, Pinto TCA. The landscape of antimicrobial resistance in the neonatal and multi-host pathogen group B Streptococcus: review from a One Health perspective. Front Microbiol 2022; 13:943413. [PMID: 35966683 PMCID: PMC9365930 DOI: 10.3389/fmicb.2022.943413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/12/2022] [Indexed: 11/13/2022] Open
Abstract
Group B Streptococcus (GBS) stands out as a major agent of pediatric disease in humans, being responsible for 392,000 invasive disease cases and 91,000 deaths in infants each year across the world. Moreover, GBS, also known as Streptococcus agalactiae, is an important agent of infections in animal hosts, notably cattle and fish. GBS population structure is composed of multiple clades that differ in virulence, antimicrobial resistance (AMR), and niche adaptation; however, there is growing evidence of interspecies transmission, both from evolutionary analysis and from disease investigations. The prevention of GBS infections through vaccination is desirable in humans as well as animals because it reduces the burden of GBS disease and reduces our reliance on antimicrobials, and the risk of adverse reactions or selection for AMR. In this perspective article, we navigate through the landscape of AMR in the pediatric and multi-host pathogen GBS under the One Health perspective and discuss the use of antimicrobials to control GBS disease, the evolution of AMR in the GBS population, and the future perspectives of resistant GBS infections in the post-pandemic era.
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Affiliation(s)
- Laura M. A. Oliveira
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- *Correspondence: Laura M. A. Oliveira,
| | - Leandro C. Simões
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Natalia S. Costa
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ruth N. Zadoks
- Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Camden, NSW, Australia
| | - Tatiana C. A. Pinto
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Petersen E, Lee SS, Blumberg L, Kramer LD, Obiero C, Al-Abri S, Abubakar A, Pinto TCA, Yapi BR, Tambyah PA, Holmes AH. International Journal of Infectious Diseases: from the past quarter-century to the next. Int J Infect Dis 2021; 109:36-37. [PMID: 34217873 PMCID: PMC7613580 DOI: 10.1016/j.ijid.2021.06.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- E Petersen
- International Society for Infectious Diseases, Boston, United States.; Institute for Clinical Medicine, Aarhus University, Denmark..
| | - S S Lee
- International Society for Infectious Diseases, Boston, United States.; Stanley Ho Centre for Emerging Infectious Diseases, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - L Blumberg
- International Society for Infectious Diseases, Boston, United States.; Centre for Emerging, Zoonotic and Parasitic Diseases, National Institute for Communicable Diseases, Johannesburg 2195, South Africa
| | - L D Kramer
- International Society for Infectious Diseases, Boston, United States.; School of Public Health, State University of New York at Albany, Albany, NY, USA
| | - C Obiero
- International Society for Infectious Diseases, Boston, United States.; Clinical Research Department, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya; Department of Global Health, University of Amsterdam, Faculty of Medicine, Amsterdam, Noord-Holland, The Netherlands
| | - S Al-Abri
- International Society for Infectious Diseases, Boston, United States.; Directorate General for Disease Surveillance and Control, Ministry of Health, Muscat, Oman
| | - A Abubakar
- International Society for Infectious Diseases, Boston, United States.; Department of Community Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - T C A Pinto
- International Society for Infectious Diseases, Boston, United States.; Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Brazil
| | - B R Yapi
- International Society for Infectious Diseases, Boston, United States.; Centre d'Entomologie Médicale et Vétérinaire, CEMV - Université Alassane Ouattara, Bouaké, Côte d'Ivoire
| | - P A Tambyah
- International Society for Infectious Diseases, Boston, United States.; Infectious Diseases Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - A H Holmes
- International Society for Infectious Diseases, Boston, United States.; Department of Infectious Disease, Faculty of Medicine, Imperial College London, United Kingdom
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Petersen E, Schlagenhauf P, Lee SS, Blumberg L, Kramer L, Obiero C, Al-Abri S, Cunha F, Petrosillo N, Di Caro A, Gautret P, Shafi S, Abubakar A, Pinto TCA, Memish Z, Hui DSC, Zumla A, Grobusch MP. Mandatory immunization against SARS-CoV-2 of athletes, companions and supporters for the Tokyo Olympics. Int J Infect Dis 2021; 108:156-158. [PMID: 34089881 PMCID: PMC8170875 DOI: 10.1016/j.ijid.2021.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- E Petersen
- European Society for Clinical Microbiology and Infectious Diseases, Emerging Infections Task Force, ESCMID, Basel, Switzerland; International Society for Infectious Diseases, Boston, United States; Institute for Clinical Medicine, Aarhus University, Denmark; European Travel Medicine Network, Méditerranée Infection Foundation, Marseille, France.
| | - P Schlagenhauf
- European Travel Medicine Network, Méditerranée Infection Foundation, Marseille, France; University of Zürich Centre for Travel Medicine, WHO Collaborating Centre for Travellers' Health, Institute for Epidemiology, Biostatistics and Prevention, Zürich, Switzerland
| | - S S Lee
- International Society for Infectious Diseases, Boston, United States; Stanley Ho Centre for Emerging Infectious Diseases, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - L Blumberg
- International Society for Infectious Diseases, Boston, United States; Centre for Emerging, Zoonotic and Parasitic Diseases, National Institute for Communicable Diseases, Johannesburg 2195, South Africa
| | - L Kramer
- International Society for Infectious Diseases, Boston, United States; School of Public Health, State University of New York at Albany, Albany, NY, United States
| | - C Obiero
- International Society for Infectious Diseases, Boston, United States; Clinical Research Department, KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya; Department of Global Health, University of Amsterdam, Faculty of Medicine, Amsterdam, Noord-Holland, The Netherlands
| | - S Al-Abri
- International Society for Infectious Diseases, Boston, United States; Directorate General for Disease Surveillance and Control, Ministry of Health, Muscat, Oman
| | - F Cunha
- European Society for Clinical Microbiology and Infectious Diseases, Emerging Infections Task Force, ESCMID, Basel, Switzerland; Department of Infectious Diseases, Coimbra Hospital and University Centre, Coimbra, Portugal
| | - N Petrosillo
- European Society for Clinical Microbiology and Infectious Diseases (ESCMID), International Affairs Subcommittee, Basel, Switzerland; Clinical and Research Department, National Institute for Infectious Diseases 'Lazzaro Spallanzani', Rome, Italy
| | - A Di Caro
- European Society for Clinical Microbiology and Infectious Diseases, Emerging Infections Task Force, ESCMID, Basel, Switzerland; Clinical and Research Department, National Institute for Infectious Diseases 'Lazzaro Spallanzani', Rome, Italy
| | - P Gautret
- European Travel Medicine Network, Méditerranée Infection Foundation, Marseille, France; IHU-Méditerranée Infection, Marseille Cedex 05, France
| | - S Shafi
- Mass Gatherings and Global Health Network, London, United Kingdom
| | - A Abubakar
- International Society for Infectious Diseases, Boston, United States; Department of Community Medicine, Ahmadu Bello University Zaria, Nigeria
| | - T C A Pinto
- International Society for Infectious Diseases, Boston, United States; Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Brazil
| | - Z Memish
- Research & Innovation Centre, King Saud Medical City, Ministry of Health & College of Medicine, Al Faisal University, Riyadh, Saudi Arabia
| | - D S C Hui
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong
| | - A Zumla
- Center for Clinical Microbiology, Division of Infection and Immunity, University College London, and NIHR Biomedical Research Centre, UCL Hospitals NHS Foundation Trust, London, United Kingdom
| | - M P Grobusch
- European Travel Medicine Network, Méditerranée Infection Foundation, Marseille, France; Center of Tropical Medicine and Travel Medicine, Department of Infectious Diseases, Amsterdam University Medical Centers, location AMC, Amsterdam Infection & Immunity, Amsterdam Public Health, University of Amsterdam, The Netherlands
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Oliveira LMA, Souza ARV, Pinto TCA, Teixeira LM. Characterization of Streptococcus pneumoniae serotype 19F-variants occurring in Brazil uncovers a predominant lineage that can lead to misinterpretation in capsular typing. Int J Infect Dis 2021; 104:580-583. [PMID: 33476756 DOI: 10.1016/j.ijid.2021.01.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/09/2021] [Accepted: 01/13/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Streptococcus pneumoniae (S. pneumoniae) of serogroup 19 are mainly represented by serotypes 19A and 19F, which are associated with antimicrobial resistance and disease. The wzy gene, a component of the pneumococcal capsular locus, is the target to differentiate serotypes 19A and 19F by PCR-based capsular typing. In the last decade, allelic variants of the wzy19F gene have been described, leading to misinterpretation of capsular typing results. METHODS A collection of 154 serotype 19F S. pneumoniae strains recovered from carriage and disease in Brazil was evaluated to identify and characterize wzy19F variant isolates. RESULTS Eleven (7%) wzy19F variant isolates were detected and identified as belonging to ST810 (n = 10) or ST13673 (n = 1; single-locus variant of ST810). They were mostly recovered from diseased patients, susceptible to the antimicrobial agents tested (except for one multidrug-resistant strain) and did not harbor pili genes. Sequences of the wzy19F gene of these variants were identical to each other and to those previously described in Brazil, but slightly different from wzy19F variants identified in other countries. CONCLUSION This study indicated that wzy19F variants present a geographically driven distribution and was the first to uncover phenotypic and genetic features of a wzy19F variant lineage occurring in Brazil since 1989.
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Affiliation(s)
- Laura M A Oliveira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Aline R V Souza
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tatiana C A Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucia M Teixeira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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Pinto TCA, Costa NS, Pina SECM, Souza ARV, Oliveira LMA, Moura CAB, Kegele FCO, Merquior VLC, Botelho ACN, Peralta JM, Teixeira LM. Virulence-Associated Characteristics of Serotype 14 and Serogroup 9 Streptococcus pneumoniae Clones Circulating in Brazil: Association of Penicillin Non-susceptibility With Transparent Colony Phenotype Variants. Front Microbiol 2020; 11:2009. [PMID: 32983022 PMCID: PMC7479199 DOI: 10.3389/fmicb.2020.02009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/29/2020] [Indexed: 12/05/2022] Open
Abstract
Streptococcus pneumoniae remains a major agent of invasive diseases, especially in children and the elderly. The presence of pneumococcal capsule, pneumococcal surface protein A (PspA), and pilus type 1 (PI-1) and the ability of colony phase variation are assumed to play important roles in the virulence potential of this microorganism. Differences in the capsular polysaccharide allow the characterization of more than 90 pneumococcal serotypes; among them, serotype 14 and serogroup 9 stand out due to their prevalence in the pre- pneumococcal conjugate vaccine era and frequent association with penicillin non-susceptibility. Here we investigated the distribution of PI-1 and pspA genes and colony phase variants among 315 S. pneumoniae isolates belonging to serotype 14 and serogroup 9, recovered over 20 years in Brazil, and correlated these characteristics with penicillin susceptibility and genotype as determined by multilocus sequence typing. All strains were shown to carry pspA genes, with those of family 2 (pspA2) being the most common, and nearly half of the strains harbored P1-1 genes. The pspA gene family and the presence of PI-1 genes were conserved features among strains belonging to a given clone. A trend for increasing the occurrence of pspA2 and PI-1 genes over the period of investigation was observed, and it coincided with the dissemination of CC156 (Spain9V-3) clone in Brazil, suggesting a role for these virulence attributes in the establishment and the persistence of this successful clone. Opaque variant was the colony phenotype most frequently observed, regardless of clonal type. On the other hand, the transparent variant was more commonly associated with penicillin-non-susceptible pneumococci and with strains presenting evidence of recombination events involving the genes coding for polysaccharide capsule and PspA, suggesting that pneumococcal transparent variants may present a higher ability to acquire exogenous DNA. The results bring to light new information about the virulence potentials of serotype 14 and serogroup 9 S. pneumoniae isolates representing the major clones that have been associated with the emergence and the dissemination of antimicrobial resistance in our setting since the late 1980s.
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Affiliation(s)
- Tatiana C. A. Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Natália S. Costa
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sandrine E. C. M. Pina
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Aline R. V. Souza
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Laura M. A. Oliveira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Camille A. B. Moura
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fabíola C. O. Kegele
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Fernandes Figueira, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Vânia L. C. Merquior
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Caroline N. Botelho
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - José M. Peralta
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lúcia M. Teixeira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- *Correspondence: Lúcia M. Teixeira,
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M. F. Matos A, M. Moreira L, F. Barczewski B, X. de Matos L, B. V. de Oliveira J, F. Pimentel MI, Almeida-Paes R, G. Oliveira M, C. A. Pinto T, Lima N, de O. Matos M, de M. e Costa LG, Santos C, Marques Evangelista Oliveira M. Identification by MALDI-TOF MS of Sporothrix brasiliensis Isolated from a Subconjunctival Infiltrative Lesion in an Immunocompetent Patient. Microorganisms 2019; 8:microorganisms8010022. [PMID: 31877698 PMCID: PMC7023001 DOI: 10.3390/microorganisms8010022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 10/28/2019] [Revised: 12/17/2019] [Accepted: 12/17/2019] [Indexed: 11/16/2022] Open
Abstract
Sporotrichosis is a globally distributed subcutaneous fungal infection caused by dimorphic fungi belonging to the Sporothrix species complex that affects the skin of limbs predominantly, but not exclusively. A rare case of ocular sporotrichosis in an immunocompetent Brazilian patient from the countryside of Rio de Janeiro State is reported. A 68-year-old woman presented with a subconjunctival infiltrative lesion in the right eye with pre-auricular lymphadenopathy of onset 4 months ago that evolved to suppurative nodular lesions on the eyelids. Conjunctival secretion was evaluated by histopathological examination and inoculated on Sabouraud Dextrose Agar (SDA). Histopathology showed oval bodies within giant cells and other mononucleated histiocytes. Fungus grown on SDA was identified as Sporothrix sp. by morphological observations. The isolated strain was finally identified by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) associated with an in-house database enriched with reference Sporothrix complex spectra. The strain presented a MALDI spectrum with the ion peaks of the molecular mass profile of S. brasiliensis. The patient was adequately treated with amphotericin B subsequently replaced by itraconazole. Due to scars left by the suppurative process, the patient presented poor final visual acuity. The present work presents an overview of ocular sporotrichosis and discusses the diagnostic difficulty that can lead to visual sequelae in these cases.
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Affiliation(s)
- Aline M. F. Matos
- Department of Ophthalmology, University Hospital of the Federal University of Juiz de Fora, Juiz de Fora 36038-330, Brazil; (A.M.F.M.); (B.F.B.); (L.X.d.M.); (J.B.V.d.O.)
| | - Lucas M. Moreira
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (L.M.M.); (R.A.-P.)
| | - Bianca F. Barczewski
- Department of Ophthalmology, University Hospital of the Federal University of Juiz de Fora, Juiz de Fora 36038-330, Brazil; (A.M.F.M.); (B.F.B.); (L.X.d.M.); (J.B.V.d.O.)
| | - Lucas X. de Matos
- Department of Ophthalmology, University Hospital of the Federal University of Juiz de Fora, Juiz de Fora 36038-330, Brazil; (A.M.F.M.); (B.F.B.); (L.X.d.M.); (J.B.V.d.O.)
| | - Jordane B. V. de Oliveira
- Department of Ophthalmology, University Hospital of the Federal University of Juiz de Fora, Juiz de Fora 36038-330, Brazil; (A.M.F.M.); (B.F.B.); (L.X.d.M.); (J.B.V.d.O.)
| | - Maria Ines F. Pimentel
- Laboratório de Pesquisa Clínica e Vigilância em Leishmanioses, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil;
| | - Rodrigo Almeida-Paes
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (L.M.M.); (R.A.-P.)
| | - Murilo G. Oliveira
- Department of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora 36036-900, Brazil;
| | - Tatiana C. A. Pinto
- Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil;
| | - Nelson Lima
- CEB—Biological Engineering Centre, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal;
| | - Magnum de O. Matos
- Imaging Department of Instituto Oncológico, Hospital Nove de Julho, Juiz de Fora 36010-510, Brazil;
| | - Louise G. de M. e Costa
- Department of Pathology, Faculty of Medicine of Federal University of Juiz de Fora, Juiz de Fora 36038-330, Brazil;
| | - Cledir Santos
- Department of Chemical Science and Natural Resources, BIOREN-UFRO, Universidad de La Frontera, 4811-230 Temuco, Chile
- Correspondence: (C.S.); (M.M.E.O.)
| | - Manoel Marques Evangelista Oliveira
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
- Correspondence: (C.S.); (M.M.E.O.)
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9
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Assumpção YDM, Teixeira IM, Paletta ACC, Ferreira EDO, Pinto TCA, Penna BDA. Matrix-assisted laser desorption ionization-time of flight mass spectrometry-based method for accurate discrimination of Staphylococcus schleiferi subspecies. Vet Microbiol 2019; 240:108472. [PMID: 31902510 DOI: 10.1016/j.vetmic.2019.108472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 07/30/2019] [Revised: 10/14/2019] [Accepted: 10/21/2019] [Indexed: 11/19/2022]
Abstract
S. schleiferi is one of the main species isolated from canine otitis externa, pyoderma and from apparently healthy dogs. The species is divided into two subspecies, S. schleiferi schleiferi and S. schleiferi coagulans. MALDI-TOF MS does not distinguish correctly these two subspecies. This study aimed to identify biomarkers that could possibly discriminate Staphylococcus schleiferi subspecies by MALDI-TOF MS. Twelve strains (eight S. schleiferi schleiferi and four S. schleiferi coagulans) were firstly identified. Each isolate was submitted to a protein extraction protocol and subjected to spectrometry on Bruker Microflex LT mass spectrometer. Spectra were analyzed with the BioNumerics software v7.6. Our results showed that spectra clustered according to subspecies, and a set of five MALDI-TOF MS biomarkers were selected to enable the discrimination of S. schleiferi subspecies. In addition, these biomarkers were predicted to represent highly conserved proteins, which could contribute to the identification of subspecies-specific proteins that could be used for improved subspecies identification in clinical samples.
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Affiliation(s)
- Yasmim de Moraes Assumpção
- Universidade Federal Fluminense, Instituto Biomédico, Niterói, RJ (Rua Professor Hernani Melo No 101, São Domingos, Niterói, RJ, CEP: 24210-130, Brazil
| | - Izabel M Teixeira
- Universidade Federal Fluminense, Instituto Biomédico, Niterói, RJ (Rua Professor Hernani Melo No 101, São Domingos, Niterói, RJ, CEP: 24210-130, Brazil; Universidade Federal Do Rio De Janeiro, Instituto De Microbiologia Paulo De Góes, Rio De Janeiro, RJ (Av. Carlos Chagas Filho, 373, Bloco I, 2° Andar, CEP 21941-902, Brazil
| | - Ana Clara Cabral Paletta
- Universidade Federal Fluminense, Instituto Biomédico, Niterói, RJ (Rua Professor Hernani Melo No 101, São Domingos, Niterói, RJ, CEP: 24210-130, Brazil
| | - Eliane de Oliveira Ferreira
- Universidade Federal Do Rio De Janeiro, Instituto De Microbiologia Paulo De Góes, Rio De Janeiro, RJ (Av. Carlos Chagas Filho, 373, Bloco I, 2° Andar, CEP 21941-902, Brazil
| | - Tatiana C A Pinto
- Universidade Federal Do Rio De Janeiro, Instituto De Microbiologia Paulo De Góes, Rio De Janeiro, RJ (Av. Carlos Chagas Filho, 373, Bloco I, 2° Andar, CEP 21941-902, Brazil
| | - Bruno de A Penna
- Universidade Federal Fluminense, Instituto Biomédico, Niterói, RJ (Rua Professor Hernani Melo No 101, São Domingos, Niterói, RJ, CEP: 24210-130, Brazil.
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10
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Neves FPG, Cardoso NT, Souza ARV, Snyder RE, Marlow MM, Pinto TCA, Teixeira LM, Riley LW. Population structure of Streptococcus pneumoniae colonizing children before and after universal use of pneumococcal conjugate vaccines in Brazil: emergence and expansion of the MDR serotype 6C-CC386 lineage. J Antimicrob Chemother 2019; 73:1206-1212. [PMID: 29401243 DOI: 10.1093/jac/dky001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 12/28/2017] [Indexed: 01/06/2023] Open
Abstract
Objectives To determine the population structure and change in drug resistance of pneumococci colonizing children before and after the introduction of the 10-valent and 13-valent pneumococcal conjugate vaccines (PCV10/13) in Brazil. Methods We used MLST to analyse 256 pneumococcal isolates obtained from children aged <6 years before (2009-10; n = 125) and after (2014; n = 131) the introduction of the PCV10 and PCV13. Antimicrobial susceptibility and capsular types were previously determined. Results We identified 97 different STs. Ninety (35.2%) isolates were related to international clones. The most frequent lineages were serogroup 6-CC724 (where CC stands for clonal complex) and the MDR serotype 6C-CC386 in the pre- and post-PCV10/13 periods, respectively. Penicillin-non-susceptible pneumococci (PNSP) formed 24% and 38.9% of the pre- and post-PCV10/13 isolates, respectively (P = 0.01). In the pre-PCV10/13 period, serotype 14-ST156 was the predominant penicillin-non-susceptible lineage, but it was not detected in the post-PCV10/13 period. Serotype 14-ST156 and serotype 19A-ST320 complex isolates had the highest penicillin and ceftriaxone MICs in the pre- and post-PCV10/13 periods, respectively. In turn, serotype 6C-CC386 comprised almost 30% of the PNSP and over 40% of the erythromycin-resistant isolates (MIC >256 mg/L) in the post-PCV10/13 period. Conclusions Although PNSP strains were polyclonal, most resistant isolates belonged to a single genotype from each period. Higher erythromycin resistance prevalence (42%) in the post-PCV10/13 period was mainly attributed to MDR serotype 6C-CC386. Ongoing surveillance of pneumococcal clonal composition is important to evaluate PCV use outcomes and to identify factors other than PCVs that drive pneumococcal drug resistance evolution.
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Affiliation(s)
- Felipe P G Neves
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California Berkeley, 530E Li Ka Shing Center, Berkeley, CA 94720, USA.,Instituto Biomédico, Universidade Federal Fluminense, Rua Professor Hernani Melo, 101 São Domingos, Niterói, RJ 24210-130, Brazil
| | - Nayara T Cardoso
- Instituto Biomédico, Universidade Federal Fluminense, Rua Professor Hernani Melo, 101 São Domingos, Niterói, RJ 24210-130, Brazil
| | - Aline R V Souza
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Robert E Snyder
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California Berkeley, 530E Li Ka Shing Center, Berkeley, CA 94720, USA
| | - Mariel M Marlow
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California Berkeley, 530E Li Ka Shing Center, Berkeley, CA 94720, USA
| | - Tatiana C A Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Lúcia M Teixeira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Lee W Riley
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California Berkeley, 530E Li Ka Shing Center, Berkeley, CA 94720, USA
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11
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Shewmaker PL, Whitney AM, Gulvik CA, Humrighouse BW, Gartin J, Moura H, Barr JR, Moore ERB, Karlsson R, Pinto TCA, Teixeira LM. Vagococcus bubulae sp. nov., isolated from ground beef, and Vagococcus vulneris sp. nov., isolated from a human foot wound. Int J Syst Evol Microbiol 2019; 69:2268-2276. [PMID: 31125302 DOI: 10.1099/ijsem.0.003459] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two unusual catalase-negative, Gram-stain-positive, Vagococcus-like isolates that were referred to the CDC Streptococcus Laboratory for identification are described. Strain SS1994T was isolated from ground beef and strain SS1995T was isolated from a human foot wound. Comparative 16S rRNA gene sequence analysis of isolates SS1994T and SS1995T against Vagococcus type strain sequences supported their inclusion in the genus Vagococcus. Strain SS1994T showed high sequence similarity (>97.0 %) to the two most recently proposed species, Vagococcus martis (99.2 %) and Vagococcus teuberi (99.0 %) followed by Vagococcus penaei (98.8 %), strain SS1995T (98.6 %), Vagococcus carniphilus (98.0 %), Vagococcus acidifermentans (98.0 %) and Vagococcus fluvialis (97.9 %). The 16S rRNA gene sequence of strain SS1995T was most similar to V. penaei (99.1 %), followed by SS1994T (98.6 %), V. martis (98.4 %), V. teuberi (98.1 %), V. acidifermentans (97.8 %), and both V. carniphilus and V. fluvialis (97.5 %). A polyphasic taxonomic study using conventional biochemical and the rapid ID 32 STREP system, MALDI-TOF MS, cell fatty acid analysis, pairwise sequence comparisons of the 16S rRNA, rpoA, rpoB, pheS and groL genes, and comparative core and whole genome sequence analyses revealed that strains SS1994T and SS1995T were two novel Vagococcus species. The novel taxonomic status of the two isolates was confirmed with core genome phylogeny, average nucleotide identity <84 % and in silico DNA-DNA hybridization <28 % to any other Vagococcus species. The names Vagococcusbubulae SS1994T=(CCUG 70831T=LMG 30164T) and Vagococcusvulneris SS1995T=(CCUG 70832T=LMG 30165T) are proposed.
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Affiliation(s)
- Patricia L Shewmaker
- Division of Bacterial Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - Anne M Whitney
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - Christopher A Gulvik
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - Ben W Humrighouse
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - Jarrett Gartin
- Division of High-Consequence Pathogens and Pathology, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - Hercules Moura
- Division of Laboratory Sciences, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - John R Barr
- Division of Laboratory Sciences, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - Edward R B Moore
- Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-41346 Region Västra Götaland, Sweden.,Culture Collection University of Gothenburg (CCUG), Gothenburg, Sweden.,Department of Infectious Disease, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg SE-41346, Sweden
| | - Roger Karlsson
- Department of Clinical Microbiology, Sahlgrenska University Hospital, SE-41346 Region Västra Götaland, Sweden.,Department of Infectious Disease, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg SE-41346, Sweden.,Nanoxis Consulting AB, SE-40016 Gothenburg, Sweden
| | - Tatiana C A Pinto
- Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucia M Teixeira
- Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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12
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Botelho ACN, Ferreira AFM, Fracalanzza SEL, Teixeira LM, Pinto TCA. A Perspective on the Potential Zoonotic Role of Streptococcus agalactiae: Searching for a Missing Link in Alternative Transmission Routes. Front Microbiol 2018; 9:608. [PMID: 29643850 PMCID: PMC5882794 DOI: 10.3389/fmicb.2018.00608] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 03/15/2018] [Indexed: 01/03/2023] Open
Affiliation(s)
| | | | | | | | - Tatiana C. A. Pinto
- Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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13
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Macedo-Ramos H, Ruiz-Mendoza S, Mariante RM, Guimarães EV, Quadros-de-Souza LC, Paiva MM, Ferreira EDO, Pinto TCA, Teixeira LM, Allodi S, Baetas-da-Cruz W. Streptococcus pneumoniae resists intracellular killing by olfactory ensheathing cells but not by microglia. Sci Rep 2016; 6:36813. [PMID: 27827453 PMCID: PMC5101813 DOI: 10.1038/srep36813] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 10/10/2016] [Indexed: 12/19/2022] Open
Abstract
Olfactory ensheathing cells (OECs) are a type of specialized glial cell currently considered as having a double function in the nervous system: one regenerative, and another immune. Streptococcus pneumoniae is a major agent of severe infections in humans, including meningitis. It is commonly found in the nasopharynx of asymptomatic carriers, and, under certain still unknown conditions, can invade the brain. We evaluated whether pneumococcal cells recovered from lysed OECs and microglia are able to survive by manipulating the host cell activation. An intracellular-survival assay of S. pneumoniae in OECs showed a significant number of bacterial CFU recovered after 3 h of infection. In contrast, microglia assays resulted in a reduced number of CFU. Electron-microscopy analysis revealed a large number of pneumococci with apparently intact morphology. However, microglia cells showed endocytic vesicles containing only bacterial cell debris. Infection of OEC cultures resulted in continuous NF-κB activation. The IFN-γ-induced increase of iNOS expression was reversed in infected OECs. OECs are susceptible to S. pneumoniae infection, which can suppress their cytotoxic mechanisms in order to survive. We suggest that, in contrast to microglia, OECs might serve as safe targets for pneumococci, providing a more stable environment for evasion of the immune system.
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Affiliation(s)
- Hugo Macedo-Ramos
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Programa de Pós-Graduação em Ciências Biológicas (Fisiologia), Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Laboratório de Neurobiologia Comparativa e do Desenvolvimento, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Susana Ruiz-Mendoza
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Programa de Pós-Graduação em Ciências Biológicas (Fisiologia), Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Rafael M Mariante
- Laboratório de Neurogênese, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Erick V Guimarães
- Laboratório de Biologia Estrutural, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Lucas C Quadros-de-Souza
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Eliane de O Ferreira
- Universidade Federal do Rio de Janeiro - Polo Xerém, Duque de Caxias, Rio de Janeiro, RJ, Brazil
| | - Tatiana C A Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Lucia M Teixeira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Silvana Allodi
- Programa de Pós-Graduação em Ciências Biológicas (Fisiologia), Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Laboratório de Neurobiologia Comparativa e do Desenvolvimento, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Wagner Baetas-da-Cruz
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Programa de Pós-Graduação em Ciências Biológicas (Fisiologia), Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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14
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Costa NS, Pinto TCA, Merquior VLC, Castro LFS, da Rocha FSP, Morais JM, Peralta JM, Teixeira LM. MLVA Typing of Streptococcus pneumoniae Isolates with Emphasis on Serotypes 14, 9N and 9V: Comparison of Previously Described Panels and Proposal of a Novel 7 VNTR Loci-Based Simplified Scheme. PLoS One 2016; 11:e0158651. [PMID: 27391462 PMCID: PMC4938579 DOI: 10.1371/journal.pone.0158651] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 06/20/2016] [Indexed: 11/18/2022] Open
Abstract
Streptococcus pneumoniae remains as an important cause of community-acquired bacterial infections, and the nasopharynx of asymptomatic carriers is the major reservoir of this microorganism. Pneumococcal strains of serotype 14 and serogroup 9 are among the most frequently isolated from both asymptomatic carriers and patients with invasive disease living in Brazil. Internationally disseminated clones belonging to such serotypes have been associated with the emergence and spread of antimicrobial resistance in our setting, highlighting the need for epidemiological tracking of these isolates. In this scenario, Multiple Loci VNTR Analysis (MLVA) has emerged as an alternative tool for the molecular characterization of pneumococci, in addition to more traditional techniques such as Multi-Locus Sequence Typing (MLST) and Pulsed-Field Gel Electrophoresis (PFGE). In the present study, 18 VNTR loci, as well as other previously described reduced MLVA panels (7 VNTR loci), were evaluated as tools to characterize pneumococcal strains of serotypes 14, 9N and 9V belonging to international and regional clones isolated in Brazil. The 18 VNTR loci panel was highly congruent with MLST and PFGE, being also useful for indicating the genetic relationship with international clones and for discriminating among strains with indistinguishable STs and PFGE profiles. Analysis of the results also allowed deducing a novel shorter 7 VNTR loci panel, keeping a high discriminatory power for isolates of the serotypes investigated and a high congruence level with MLST and PFGE. The newly proposed simplified panel was then evaluated for typing pneumococcal strains of other commonly isolated serotypes. The results indicate that MLVA is a faster and easier to perform, reliable approach for the molecular characterization of S. pneumoniae isolates, with potential for cost-effective application, especially in resource-limited countries.
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Affiliation(s)
- Natália S. Costa
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
- Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Tatiana C. A. Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Vânia L. C. Merquior
- Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Luciana F. S. Castro
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Filomena S. P. da Rocha
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Jaqueline M. Morais
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - José M. Peralta
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Lúcia M. Teixeira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
- * E-mail:
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15
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Ruiz-Mendoza S, Macedo-Ramos H, Santos FA, Quadros-de-Souza LC, Paiva MM, Pinto TCA, Teixeira LM, Baetas-da-Cruz W. Streptococcus pneumoniae infection regulates expression of neurotrophic factors in the olfactory bulb and cultured olfactory ensheathing cells. Neuroscience 2016; 317:149-61. [PMID: 26791522 DOI: 10.1016/j.neuroscience.2016.01.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 12/31/2015] [Accepted: 01/05/2016] [Indexed: 12/22/2022]
Abstract
Streptococcus pneumoniae is the causative agent of numerous diseases including severe invasive infections such as bacteremia and meningitis. It has been previously shown that strains of S. pneumoniae that are unable to survive in the bloodstream may colonize the CNS. However, information on cellular components and pathways involved in the neurotropism of these strains is still scarce. The olfactory system is a specialized tissue in which olfactory receptor neurons (ORNs) are interfacing with the external environment through several microvilli. Olfactory ensheathing cells (OECs) which also form the glial limiting membrane at the surface of the olfactory bulb (OB) are the only cells that ensheathe the ORNs axons. Since previous data from our group showed that OECs may harbor S. pneumoniae, we decided to test whether infection of the OB or OEC cultures modulates the expression levels of neurotrophic factor's mRNA and its putative effects on the activation and viability of microglia. We observed that neurotrophin-3 (NT-3) and glial cell-line-derived neurotrophic factor (GDNF) expression was significantly higher in the OB from uninfected mice than in infected mice. A similar result was observed when we infected OEC cultures. Brain-derived neurotrophic factor (BNDF) expression was significantly lower in the OB from infected mice than in uninfected mice. In contrast, in vitro infection of OECs resulted in a significant increase of BDNF mRNA expression. An upregulation of high-mobility group box 1 (HMGB1) expression was observed in both OB and OEC cultures infected with S. pneumoniae. Moreover, we found that conditioned medium from infected OEC cultures induced the expression of the pro-apoptotic protein cleaved-caspase-3 and an apparently continuous nuclear factor-kappa B (NF-κB) p65 activation in the N13 microglia. Altogether, our data suggest the possible existence of an OEC-pathogen molecular interface, through which the OECs could interfere on the activation and viability of microglia, favoring the access of non-hematogenous S. pneumoniae strains to the CNS in the absence of bacteremia.
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Affiliation(s)
- S Ruiz-Mendoza
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto de Biofísica Carlos Chagas Filho, Programa de Pós-Graduação em Ciências Biológicas (Fisiologia), Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - H Macedo-Ramos
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto de Biofísica Carlos Chagas Filho, Programa de Pós-Graduação em Ciências Biológicas (Fisiologia), Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - F A Santos
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - L C Quadros-de-Souza
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - M M Paiva
- Instituto Nacional de Tecnologia, Rio de Janeiro, RJ, Brazil
| | - T C A Pinto
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - L M Teixeira
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - W Baetas-da-Cruz
- Laboratório Translacional em Fisiologia Molecular, Centro de Cirurgia Experimental, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto de Biofísica Carlos Chagas Filho, Programa de Pós-Graduação em Ciências Biológicas (Fisiologia), Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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16
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Dutra VG, Alves VMN, Olendzki AN, Dias CAG, de Bastos AFA, Santos GO, de Amorin ELT, Sousa MÂB, Santos R, Ribeiro PCS, Fontes CF, Andrey M, Magalhães K, Araujo AA, Paffadore LF, Marconi C, Murta EFC, Fernandes PC, Raddi MSG, Marinho PS, Bornia RBG, Palmeiro JK, Dalla-Costa LM, Pinto TCA, Botelho ACN, Teixeira LM, Fracalanzza SEL. Streptococcus agalactiae in Brazil: serotype distribution, virulence determinants and antimicrobial susceptibility. BMC Infect Dis 2014; 14:323. [PMID: 24919844 PMCID: PMC4061772 DOI: 10.1186/1471-2334-14-323] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 06/06/2014] [Indexed: 01/11/2023] Open
Abstract
Background Group B Streptococcus (GBS) remains a major cause of neonatal sepsis and is also associated with invasive and noninvasive infections in pregnant women and non-pregnant adults, elderly and patients with underlying medical conditions. Ten capsular serotypes have been recognized, and determination of their distribution within a specific population or geographical region is important as they are major targets for the development of vaccine strategies. We have evaluated the characteristics of GBS isolates recovered from individuals with infections or colonization by this microorganism, living in different geographic regions of Brazil. Methods A total of 434 isolates were identified and serotyped by conventional phenotypic tests. The determination of antimicrobial susceptibility was performed by the disk diffusion method. Genes associated with resistance to erythromycin (ermA, ermB, mefA) and tetracycline (tetK, tetL, tetM, tetO) as well as virulence-associated genes (bac, bca, lmb, scpB) were investigated using PCR. Pulsed-field gel electrophoresis (PFGE) was used to examine the genetic diversity of macrolide-resistant and of a number of selected macrolide-susceptible isolates. Results Overall, serotypes Ia (27.6%), II (19.1%), Ib (18.7%) and V (13.6%) were the most predominant, followed by serotypes IV (8.1%) and III (6.7%). All the isolates were susceptible to the beta-lactam antimicrobials tested and 97% were resistant to tetracycline. Resistance to erythromycin and clindamycin were found in 4.1% and 3% of the isolates, respectively. Among the resistance genes investigated, tetM (99.3%) and tetO (1.8%) were detected among tetracycline-resistant isolates and ermA (39%) and ermB (27.6%) were found among macrolide-resistant isolates. The lmb and scpB virulence genes were detected in all isolates, while bac and bca were detected in 57 (13.1%) and 237 (54.6%) isolates, respectively. Molecular typing by PFGE showed that resistance to erythromycin was associated with a variety of clones. Conclusion These findings indicate that GBS isolates circulating in Brazil have a variety of phenotypic and genotypic characteristics, and suggest that macrolide-resistant isolates may arise by both clonal spread and independent acquisition of resistance genes.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Sérgio Eduardo L Fracalanzza
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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