1
|
Rocha PK, Rickard CM, Gales AC, Sincero TCM, Ray-Barruel G, Ullman AJ, Dalcin CB, Pedreira MLG. Disinfection of needleless connectors to reduce Staphylococcus aureus bacterial load. Br J Nurs 2022; 31:S26-S31. [PMID: 36306235 DOI: 10.12968/bjon.2022.31.19.s26] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
HIGHLIGHTS Compare effectiveness of chemical disinfectants in reducing S. aureus. Five disinfectants reduced the bacterial load, especially chlorhexidine solutions. Focus on Brazilian clinical practice of needleless connector disinfection. PURPOSE This study aimed to gain further knowledge about the comparative effectiveness of chemical disinfectants in reducing the bacterial load of NCs inoculated with S. aureus. METHODS Disinfection of needleless connectors was undertaken in vitro against S. aureus comparing 70% isopropyl alcohol (IPA), 70% ethanol, 0.5% and 2% chlorhexidine in 70% IPA applied with gauze, and 70% IPA single-use cap (Site-Scrub®). RESULTS All disinfectants reduced the bacterial load (P<0.001), especially the chlorhexidine solutions. Mechanical friction should follow guidelines. CONCLUSION This study found that all tested disinfectants effectively reduced the bacterial load and more clinical studies must be developed with a focus on the Brazilian clinical practice of needleless connector disinfection.
Collapse
Affiliation(s)
- Patrícia Kuerten Rocha
- Universidade Federal de Santa Catarina, Nursing Department, Paediatric Area, Gepesca Laboratory, Florianópolis, Brazil; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil; Alliance for Vascular Access Teaching and Research, School of Nursing and Midwifery, Griffith University, Brisbane, Australia
| | - Claire M Rickard
- Alliance for Vascular Access Teaching and Research, School of Nursing and Midwifery, Griffith University, Brisbane, Australia; School of Nursing, Midwifery and Social Work, The University of Queensland, Brisbane, Australia; Nursing and Midwifery Research Centre, Herston Infectious Diseases Institute, Metro North Health, Brisbane, Australia
| | - Ana Cristina Gales
- Universidade Federal de São Paulo, Paulista School of Medicine, Internal Medicine Department, Division of Infectious Diseases, Alert Laboratory, São Paulo, Brazil
| | - Thaís Cristine Marques Sincero
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil; Universidade Federal de Santa Catarina, Health Sciences Centre, Clinical Analysis Department, Molecular Microbiology Laboratory, Florianópolis, Brazil
| | - Gillian Ray-Barruel
- Alliance for Vascular Access Teaching and Research, School of Nursing and Midwifery, Griffith University, Brisbane, Australia; QEII Jubilee Hospital, Brisbane, Australia
| | - Amanda J Ullman
- Alliance for Vascular Access Teaching and Research, School of Nursing and Midwifery, Griffith University, Brisbane, Australia; School of Nursing, Midwifery and Social Work, The University of Queensland, Brisbane, Australia; Queensland Children's Hospital, Brisbane, Australia
| | - Camila Biazus Dalcin
- Universidade Federal de Santa Catarina, Nursing Department, Paediatric Area, Gepesca Laboratory, Florianópolis, Brazil; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brasília, Brazil
| | - Mavilde L Gonçalves Pedreira
- National Council for Scientific and Technological Development (CNPq), Brazil; Alliance for Vascular Access Teaching and Research, School of Nursing and Midwifery, Griffith University, Brisbane, Australia; Universidade Federal de São Paulo, Paediatric Nursing Department, LEEnf Laboratory, SEGTEC Research Group, Sao Paulo, Brazil
| |
Collapse
|
2
|
Beltrame LC, Zamparette CP, Feltrin C, da Cunha CR, Coltro EP, Athayde GSDS, Filho VB, Tápparo DC, Monteiro J, Kich JD, Palmeiro JK, Wagner G, Fongaro G, Zárate-Bladés CR, Sincero TCM. Different Swine Production Systems Can Shape Slurry Resistome at Mechanism and Class Levels Based on Swine Manure Evaluation. Front Cell Infect Microbiol 2022; 12:879656. [PMID: 35860383 PMCID: PMC9289446 DOI: 10.3389/fcimb.2022.879656] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/30/2022] [Indexed: 11/14/2022] Open
Abstract
Antimicrobial resistance is a major threat to public health. Antimicrobial use in animal husbandry is a major concern since it can favor an increase in antimicrobial resistance among farms. Herein, we aim to better understand and characterize the main resistome profiles in microbial communities found in pig farms. Sampling of swine manure was performed in two different timepoints (October 2019 and January 2020) in each of the 14 different swine farms, located in the mesoregion of Western Santa Catarina state in Brazil, a pole of swine product production of worldwide importance. Samples were divided into three groups: farms with the opened regimen and no usage of antimicrobials (F1; n = 10), farms with the closed regimen and usage of antimicrobials (F2; n = 16), and farms with the closed regimen and no usage of antimicrobials (F3; n = 2). The metagenomic evaluation was performed to obtain and identify genetic elements related to antimicrobial resistance using nanopore sequencing. We used ResistoXplorer software to perform composition, alpha and beta diversity, and clustering analysis. In addition, PCR reactions were performed to confirm the presence or absence of seven different beta-lactamase family genes and five phosphoethanolamine transferase gene variants clinically relevant. Our findings based on the identification of resistance genes at the mechanism level showed a prevalence of alteration of the drug target (72.3%) profile, followed by drug inactivation (17.5%) and drug efflux (10.1%). We identified predominantly aminoglycosides (45.3%), tetracyclines (15.9%), and multiclass (11,2%) resistance genes. PCoA analysis indicates differences between F1 and F2 profiles. F2 samples showed increased diversity when compared to the F1 group. In addition, herein we first report the identification of mcr-4 in a slurry sample (C1F1.1) in Santa Catarina State. In general, our findings reinforce that many factors on the practices of animal husbandry are involved in the resistome profile at the mechanism and class levels. Further studies to better understand microbiome and mobilome aspects of these elements are necessary to elucidate transmission pathways between different bacteria and environments.
Collapse
Affiliation(s)
- Lucas Cafferati Beltrame
- Laboratory of Immunoregulation, iREG, Department of Microbiology, Immunology, and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
- Laboratory of Applied Molecular Microbiology, MIMA, Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Caetana Paes Zamparette
- Laboratory of Applied Molecular Microbiology, MIMA, Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Clarissa Feltrin
- Laboratory of Applied Molecular Microbiology, MIMA, Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Caroline Ribeiro da Cunha
- Laboratory of Applied Molecular Microbiology, MIMA, Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Elisa Pires Coltro
- Laboratory of Immunoregulation, iREG, Department of Microbiology, Immunology, and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Gabriel Saldanha da Silva Athayde
- Laboratory of Applied Molecular Microbiology, MIMA, Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Vilmar Benetti Filho
- Laboratory of Bioinformatics, Department of Microbiology, Immunology, and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | - Jamir Monteiro
- Faculty of Veterinary Medicine, University of Southern Santa Catarina, Tubarão, Brazil
| | | | - Jussara Kasuko Palmeiro
- Laboratory of Applied Molecular Microbiology, MIMA, Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Glauber Wagner
- Laboratory of Bioinformatics, Department of Microbiology, Immunology, and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Gislaine Fongaro
- Laboratory of Applied Virology, LVA, Department of Microbiology, Immunology, and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Carlos Rodrigo Zárate-Bladés
- Laboratory of Immunoregulation, iREG, Department of Microbiology, Immunology, and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Thaís Cristine Marques Sincero
- Laboratory of Applied Molecular Microbiology, MIMA, Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil
- *Correspondence: Thaís Cristine Marques Sincero,
| |
Collapse
|
3
|
Feltrin C, Oliveira Simões CM, Marques Sincero TC. Development of a cell-based reporter assay for detection of Human alphaherpesviruses. Mol Cell Probes 2022; 62:101806. [DOI: 10.1016/j.mcp.2022.101806] [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] [Received: 12/04/2021] [Revised: 02/13/2022] [Accepted: 03/02/2022] [Indexed: 11/28/2022]
|
4
|
Sereia AFR, Christoff AP, Cruz GNF, da Cunha PA, da Cruz GCK, Tartari DC, Zamparette CP, Klein TCR, Masukawa II, Silva CI, E Vieira MLV, Scheffer MC, de Oliveira LFV, Sincero TCM, Grisard EC. Healthcare-Associated Infections-Related Bacteriome and Antimicrobial Resistance Profiling: Assessing Contamination Hotspots in a Developing Country Public Hospital. Front Microbiol 2021; 12:711471. [PMID: 34484149 PMCID: PMC8415557 DOI: 10.3389/fmicb.2021.711471] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/02/2021] [Indexed: 11/13/2022] Open
Abstract
Hospital-built environment colonization by healthcare-associated infections-related bacteria (HAIrB) and the interaction with their occupants have been studied to support more effective tools for HAI control. To investigate HAIrB dynamics and antimicrobial resistance (AMR) profile we carried out a 6-month surveillance program in a developing country public hospital, targeting patients, hospital environment, and healthcare workers, using culture-dependent and culture-independent 16S rRNA gene sequencing methods. The bacterial abundance in both approaches shows that the HAIrB group has important representativeness, with the taxa Enterobacteriaceae, Pseudomonas, Staphylococcus, E. coli, and A. baumannii widely dispersed and abundant over the time at the five different hospital units included in the survey. We observed a high abundance of HAIrB in the patient rectum, hands, and nasal sites. In the healthcare workers, the HAIrB distribution was similar for the hands, protective clothing, and mobile phones. In the hospital environment, the healthcare workers resting areas, bathrooms, and bed equipment presented a wide distribution of HAIrB and AMR, being classified as contamination hotspots. AMR is highest in patients, followed by the environment and healthcare workers. The most frequently detected beta-lactamases genes were, blaSHV–like, blaOXA–23–like, blaOXA–51–like, blaKPC–like, blaCTX–M–1, blaCTX–M–8, and blaCTX–M–9 groups. Our results demonstrate that there is a wide spread of antimicrobial resistance due to HAIrB in the hospital environment, circulating among patients and healthcare workers. The contamination hotspots identified proved to be constant over time. In the fight for patient safety, these findings can reorient practices and help to set up new guidelines for HAI control.
Collapse
Affiliation(s)
- Aline Fernanda Rodrigues Sereia
- Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil.,BiomeHub, Florianópolis, Brazil
| | | | | | - Patrícia Amorim da Cunha
- Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | | | - Caetana Paes Zamparette
- Department of Clinical Analysis, Federal University of Santa Catarina, Florianopólis, Brazil
| | - Taise Costa Ribeiro Klein
- Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Ivete Ioshiko Masukawa
- Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Clarice Iomara Silva
- Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Maria Luiza Vieira E Vieira
- Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Mara Cristina Scheffer
- Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | | | - Edmundo Carlos Grisard
- Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, Brazil
| |
Collapse
|
5
|
Tartari DC, Zamparette CP, Martini G, Christakis S, Costa LH, Silveira ACDO, Sincero TCM. Genomic analysis of an extensively drug-resistant Pseudomonas aeruginosa ST312 harbouring IncU plasmid-mediated bla KPC-2 isolated from ascitic fluid. J Glob Antimicrob Resist 2021; 25:151-153. [PMID: 33789205 DOI: 10.1016/j.jgar.2021.03.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/17/2020] [Accepted: 03/13/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES The Klebsiella pneumoniae carbapenemase (KPC) is disseminated worldwide mostly by plasmids. However, in Pseudomonas aeruginosa chromosomal mutations are more frequently responsible for resistance to carbapenems than the acquisition of mobile elements harbouring carbapenemases genes. Indeed, although uncommon, KPC-2-producing P. aeruginosa has appeared more frequently, including in Brazil. Here we report the first genomic analysis of a plasmid-mediated KPC-2 in an extensively drug-resistant (XDR) P. aeruginosa isolated in Santa Catarina, Brazil. METHODS Antimicrobial susceptibility testing was performed according to CLSI 2020 guidelines. The genome was sequenced using an Illumina MiSeq platform and the data were analysed using SPAdes and Prokka. In silico predictions were fulfilled using curated bioinformatics tools. RESULTS Pseudomonas aeruginosa strain MIMA_PA2.1 (JACGTM000000000) was classified as XDR, belongs to sequence type 312 (ST312) and harbours the blaKPC-2 gene located on a small (7975 bp) IncU plasmid. This plasmid showed 86.3% identity with a non-conjugative plasmid (KC609322) carrying the blaKPC-2 gene from a multidrug-resistant P. aeruginosa (ST1006) from Colombia isolated in 2006. Besides the blaKPC-2 gene, other resistance genes to β-lactams, aminoglycosides, phenicol, fosfomycin and quinolones were detected, the last two also associated with mobile genetic elements other than the IncU plasmid described here. CONCLUSION This is the first genomic report of the presence of the blaKPC-2 gene carried by Pseudomonas in Southern Brazil and highlights the adaptability of blaKPC-2 to different mobile elements. This draft genome might be useful for comparative genomic analyses to monitor the spread of plasmid-mediated blaKPC in P. aeruginosa in Latin America.
Collapse
Affiliation(s)
- Daniela Cristina Tartari
- Departamento de Análises Clínicas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina (UFSC), Setor E, Bloco K, Florianópolis, Santa Catarina 88040-970, Brazil
| | - Caetana Paes Zamparette
- Departamento de Análises Clínicas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina (UFSC), Setor E, Bloco K, Florianópolis, Santa Catarina 88040-970, Brazil
| | - Graciele Martini
- Laboratório Central de Saúde Pública de Santa Catarina (LACEN/SC), Florianópolis, Santa Catarina, Brazil
| | - Sandra Christakis
- Laboratório Central de Saúde Pública de Santa Catarina (LACEN/SC), Florianópolis, Santa Catarina, Brazil
| | - Luiz Henrique Costa
- Departamento de Ciências Farmacêuticas, Universidade Regional de Blumenau (FURB), Blumenau, Santa Catarina, Brazil
| | | | - Thaís Cristine Marques Sincero
- Departamento de Análises Clínicas, Centro de Ciências da Saúde, Universidade Federal de Santa Catarina (UFSC), Setor E, Bloco K, Florianópolis, Santa Catarina 88040-970, Brazil.
| |
Collapse
|
6
|
Pamplona-Cunha H, Medeiros MF, Sincero TCM, Back IDC, Silva ELD. Compound Heterozygous Familial Hypercholesterolemia Caused by LDLR Variants. Arq Bras Cardiol 2020; 115:587-589. [PMID: 33027386 PMCID: PMC9363081 DOI: 10.36660/abc.20190582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 09/08/2019] [Accepted: 01/22/2020] [Indexed: 11/18/2022] Open
Abstract
A hipercolesterolemia familiar (HF) é uma doença genética causada por um defeito primário no gene que codifica o receptor da LDL. Mutações diferentes no mesmo gene caracterizam um heterozigoto composto, mas pouco se sabe sobre o fenótipo dos portadores. Portanto, neste estudo, descrevemos o rastreamento em cascata de uma família brasileira com essa característica. O caso-índice é um homem de 36 anos, com colesterol total (CT) de 360 mg/dL (9,3 mmol/L) e concentração de LDL-c de 259 mg/dL (6,7 mmol/L), além de xantomas de tendão de Aquiles, obesidade e pré-hipertensão. A genotipagem identificou as mutações 661G>A, 670G>A e 682G>A, no exon 4, e 919G>A, no exon 6. A mesma mutação no exon 4 foi observada no filho do caso-índice (7 anos), que também tem hipercolesterolemia e xantomas tendinosos, ao passo que a filha do caso-índice (9 anos) apresenta mutação no exon 6 e hiperlipidemia, sem xantomas. Em suma, este relato permite uma melhor compreensão acerca da base molecular da HF no Brasil, um país multirracial, onde é esperada uma população heterogênea.
Collapse
|
7
|
Silveira ACO, Caierão J, Silva CI, Anzai EK, McCulloch JA, d'Azevedo PA, Sincero TCM. Impact of mutations in hVISA isolates on decreased susceptibility to vancomycin, through population analyses profile - area under curve (PAP-AUC). Diagn Microbiol Infect Dis 2019; 95:114854. [PMID: 31366440 DOI: 10.1016/j.diagmicrobio.2019.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 04/10/2019] [Accepted: 06/06/2019] [Indexed: 10/26/2022]
Abstract
We analyzed sequences of graSR, vraSR, walKR and rpoB genes in hVISA from Brazil. Five isolates showed mutations in at least one gene. rpoB H481N and graS T224I were the most frequent mutations, followed by graR D148Q and walK A468T. Our study reinforces the heterogeneity of genetic patterns among hVISA.
Collapse
Affiliation(s)
- A C O Silveira
- UFSC - Federal University of Santa Catarina, Florianópolis, - SC, Brazil; FURB - Regional University of Blumenau, Blumenau, - SC, Brazil.
| | - J Caierão
- UFRGS - Federal University of Rio Grande do Sul, Porto Alegre, - RS, Brazil
| | - C I Silva
- UFSC - Federal University of Santa Catarina, Florianópolis, - SC, Brazil
| | - E K Anzai
- FURB - Regional University of Blumenau, Blumenau, - SC, Brazil
| | - J A McCulloch
- USP - University of São Paulo, São Paulo, - SP, Brazil
| | - P A d'Azevedo
- UFCSPA - Federal University of Health Sciences of Porto Alegre, Porto Alegre, - RS, Brazil
| | - T C M Sincero
- UFSC - Federal University of Santa Catarina, Florianópolis, - SC, Brazil
| |
Collapse
|
8
|
Golfetto L, Alves EV, Martins TR, Sincero TCM, Castro JBS, Dannebrock C, Oliveira JG, Levi JE, Onofre ASC, Bazzo ML. PCR-RFLP assay as an option for primary HPV test. Braz J Med Biol Res 2018; 51:e7098. [PMID: 29590262 PMCID: PMC5886552 DOI: 10.1590/1414-431x20177098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 12/18/2017] [Indexed: 11/22/2022] Open
Abstract
Persistent human papillomavirus (HPV) infection is an essential factor of cervical cancer. This study evaluated the analytical performance of restriction fragment length polymorphism polymerase chain reaction (PCR-RFLP) assay compared to PapilloCheck® microarray to identify human papilloma virus (HPV) in cervical cells. Three hundred and twenty-five women were analyzed. One sample was used for conventional cytology and another sample was collected using BD SurePath™ kit for HPV tests. Eighty samples (24.6%) were positive for HPV gene by PCR-Multiplex and were then submitted to PCR-RFLP and PapilloCheck® microarray. There was a genotyping agreement in 71.25% (57/80) on at least one HPV type between PCR-RFLP and PapilloCheck® microarray. In 22 samples (27.5%), the results were discordant and those samples were additionally analyzed by DNA sequencing. HPV 16 was the most prevalent HPV type found in both methods, followed by HPVs 53, 68, 18, 39, and 66 using PCR-RFLP analysis, and HPVs 39, 53, 68, 56, 31, and 66 using PapilloCheck® microarray. In the present study, a perfect agreement using Cohen's kappa (κ) was found in HPV 33 and 58 (κ=1), very good for HPV 51, and good for types 16, 18, 53, 59, 66, 68, 70, and 73. PCR-RFLP analysis identified only 25% (20/80) HPV coinfection, and PapilloCheck® microarray found 62.5% (50/80). Our Cohen's kappa results indicate that our in-house HPV genotyping testing (PCR-RFLP analysis) could be applied as a primary HPV test screening, especially in low income countries. If multiple HPV types are found in this primary test, a more descriptive test, such as PapilloCheck® microarray, could be performed.
Collapse
Affiliation(s)
- L Golfetto
- Laboratório de Biologia Molecular, Microbiologia e Sorologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | - E V Alves
- Laboratório de Biologia Molecular, Microbiologia e Sorologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | - T R Martins
- Laboratório de Virologia, Instituto de Medicina Tropical, Universidade de São Paulo, São Paulo, SP, Brasil
| | - T C M Sincero
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | - J B S Castro
- Posto Central, Secretaria Municipal de Saúde, São Miguel do Oeste, SC, Brasil
| | - C Dannebrock
- Laboratório Prevent Citopatologia, São Miguel do Oeste, SC, Brasil
| | - J G Oliveira
- Grupo de Pesquisa em Imunologia Celular e Molecular, Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil
| | - J E Levi
- Laboratório de Virologia, Instituto de Medicina Tropical, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A S C Onofre
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | - M L Bazzo
- Laboratório de Biologia Molecular, Microbiologia e Sorologia, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil.,Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| |
Collapse
|
9
|
Burnatt G, Licínio MA, Gaspar PC, Ferreira AS, Reis ML, Moraes ACRD, Sincero TCM, Santos-Silva MC. Analysis of the presence of FLT3 gene mutation and association with prognostic factors in adult and pediatric acute leukemia patients. BRAZ J PHARM SCI 2017. [DOI: 10.1590/s2175-97902017000216105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
10
|
Sincero TCM, Stoco PH, Steindel M, Vallejo GA, Grisard EC. Trypanosoma rangeli displays a clonal population structure, revealing a subdivision of KP1(-) strains and the ancestry of the Amazonian group. Int J Parasitol 2015; 45:225-35. [PMID: 25592964 DOI: 10.1016/j.ijpara.2014.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 11/12/2014] [Accepted: 11/24/2014] [Indexed: 12/13/2022]
Abstract
Assessment of the genetic variability and population structure of Trypanosoma rangeli, a non-pathogenic American trypanosome, was carried out through microsatellite and single-nucleotide polymorphism analyses. Two approaches were used for microsatellite typing: data mining in expressed sequence tag /open reading frame expressed sequence tags libraries and PCR-based Isolation of Microsatellite Arrays from genomic libraries. All microsatellites found were evaluated for their abundance, frequency and usefulness as markers. Genotyping of T. rangeli strains and clones was performed for 18 loci amplified by PCR from expressed sequence tag/open reading frame expressed sequence tags libraries. The presence of single-nucleotide polymorphisms in the nuclear, multi-copy, spliced leader gene was assessed in 18 T. rangeli strains, and the results show that T. rangeli has a predominantly clonal population structure, allowing a robust phylogenetic analysis. Microsatellite typing revealed a subdivision of the KP1(-) genetic group, which may be influenced by geographical location and/or by the co-evolution of parasite and vectors occurring within the same geographical areas. The hypothesis of parasite-vector co-evolution was corroborated by single-nucleotide polymorphism analysis of the spliced leader gene. Taken together, the results suggest three T. rangeli groups: (i) the T. rangeli Amazonian group; (ii) the T. rangeli KP1(-) group; and (iii) the T. rangeli KP1(+) group. The latter two groups possibly evolved from the Amazonian group to produce KP1(+) and KP1(-) strains.
Collapse
Affiliation(s)
- Thaís Cristine Marques Sincero
- Universidade Federal de Santa Catarina (UFSC), Centro de Ciências da Saúde (CCS), Departamento de Análises Clínicas (ACL), Setor E, Bloco K, Florianópolis, SC 88.040-970, Brazil.
| | - Patricia Hermes Stoco
- Universidade Federal de Santa Catarina (UFSC), Centro de Ciências Biológicas (CCB), Departamento de Microbiologia, Imunologia e Parasitologia (MIP), Setor F, Bloco A, Florianópolis, SC 88.040-970, Brazil
| | - Mário Steindel
- Universidade Federal de Santa Catarina (UFSC), Centro de Ciências Biológicas (CCB), Departamento de Microbiologia, Imunologia e Parasitologia (MIP), Setor F, Bloco A, Florianópolis, SC 88.040-970, Brazil
| | - Gustavo Adolfo Vallejo
- Laboratorio de Investigaciones en Parasitología Tropical, Universidad del Tolima, Altos de Santa Helena, A.A. 546, Ibagué, Colombia
| | - Edmundo Carlos Grisard
- Universidade Federal de Santa Catarina (UFSC), Centro de Ciências Biológicas (CCB), Departamento de Microbiologia, Imunologia e Parasitologia (MIP), Setor F, Bloco A, Florianópolis, SC 88.040-970, Brazil.
| |
Collapse
|
11
|
Caon T, Kaiser S, Feltrin C, de Carvalho A, Sincero TCM, Ortega GG, Simões CMO. Antimutagenic and antiherpetic activities of different preparations from Uncaria tomentosa (cat's claw). Food Chem Toxicol 2014; 66:30-5. [PMID: 24447975 DOI: 10.1016/j.fct.2014.01.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 12/31/2013] [Accepted: 01/06/2014] [Indexed: 10/25/2022]
Abstract
Uncaria tomentosa have been used to treat viral diseases such as herpes due to multiple pharmacological effects, but its therapeutic efficacy against this virus have not been reported yet. Thus, in vitro antiherpetic activity of hydroethanolic extract from barks, purified fractions of quinovic acid glycosides and oxindole alkaloids was evaluated by plaque reduction assay, including mechanistic studies (virucidal, attachment and penetration action). Once exposure to physical agents might lead to reactivation of the herpetic infection, antimutagenic effect (pre-, simultaneous and post-treatment protocols) was also evaluated by Comet assay. The antiherpetic activity from the samples under investigation seemed to be associated with the presence of polyphenols or their synergistic effect with oxindole alkaloids or quinovic acid glycosides, once both purified fractions did not present activity when evaluated alone. Inhibition of viral attachment in the host cells was the main mechanism of antiviral activity. Although both purified fractions displayed the lowest antimutagenic activity in pre and simultaneous treatment, they provided a similar effect to that of cat's claw hydroethanolic extract in post-treatment. Given that purified fractions may result in a reduced antiherpetic activity, the use of cat's claw hydroethanolic extract from barks should be prioritized in order to obtain a synergistic effect.
Collapse
Affiliation(s)
- Thiago Caon
- Laboratório de Virologia Aplicada, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900 Florianópolis-SC, Brazil
| | - Samuel Kaiser
- Laboratório de Desenvolvimento Galênico, Departamento de Controle e Produção de Medicamentos, Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Farmácia, Santana, 90610-000 Porto Alegre-RS, Brazil
| | - Clarissa Feltrin
- Laboratório de Virologia Aplicada, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900 Florianópolis-SC, Brazil
| | - Annelise de Carvalho
- Laboratório de Virologia Aplicada, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900 Florianópolis-SC, Brazil
| | - Thaís Cristine Marques Sincero
- Laboratório de Virologia Aplicada, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900 Florianópolis-SC, Brazil; Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900 Florianópolis-SC, Brazil
| | - George González Ortega
- Laboratório de Desenvolvimento Galênico, Departamento de Controle e Produção de Medicamentos, Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Farmácia, Santana, 90610-000 Porto Alegre-RS, Brazil
| | - Cláudia Maria Oliveira Simões
- Laboratório de Virologia Aplicada, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900 Florianópolis-SC, Brazil; Departamento de Ciências Farmacêuticas, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, 88040-900 Florianópolis-SC, Brazil.
| |
Collapse
|
12
|
Prestes EB, Bayer-Santos E, Hermes Stoco P, Sincero TCM, Wagner G, Umaki A, Fragoso SP, Bordignon J, Steindel M, Grisard EC. Trypanosoma rangeli protein tyrosine phosphatase is associated with the parasite's flagellum. Mem Inst Oswaldo Cruz 2013; 107:713-9. [PMID: 22990958 DOI: 10.1590/s0074-02762012000600002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 05/27/2012] [Indexed: 12/11/2022] Open
Abstract
Protein tyrosine phosphatases (PTPs) play an essential role in the regulation of cell differentiation in pathogenic trypanosomatids. In this study, we describe a PTP expressed by the non-pathogenic protozoan Trypanosoma rangeli (TrPTP2). The gene for this PTP is orthologous to the T. brucei TbPTP1 and Trypanosoma cruzi (TcPTP2) genes. Cloning and expression of the TrPTP2 and TcPTP2 proteins allowed anti-PTP2 monoclonal antibodies to be generated in BALB/c mice. When expressed by T. rangeli epimastigotes and trypomastigotes, native TrPTP2 is detected as a ~65 kDa protein associated with the parasite's flagellum. Given that the flagellum is an important structure for cell differentiation in trypanosomatids, the presence of a protein responsible for tyrosine dephosphorylation in the T. rangeli flagellum could represent an interesting mechanism of regulation in this structure.
Collapse
Affiliation(s)
- Elisa Beatriz Prestes
- Laboratórios de Protozoologia e de Bioinformática, Departamento de Microbiologia, Imunologia e Parasitologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Stoco PH, Aresi C, Lückemeyer DD, Sperandio MM, Sincero TCM, Steindel M, Miletti LC, Grisard EC. Trypanosoma rangeli expresses a β-galactofuranosyl transferase. Exp Parasitol 2011; 130:246-52. [PMID: 22210157 DOI: 10.1016/j.exppara.2011.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 12/12/2011] [Accepted: 12/13/2011] [Indexed: 01/23/2023]
Abstract
Glycoconjugates play essential roles in cell recognition, infectivity and survival of protozoan parasites within their insect vectors and mammalian hosts. β-galactofuranose is a component of several glycoconjugates in many organisms, including a variety of trypanosomatids, but is absent in mammalian and African trypanosomes. Herein, we describe the presence of a β(1-3) galactofuranosyl transferase (GALFT), an important enzyme of the galactofuranose biosynthetic pathway, in Trypanosoma rangeli. The T. rangeli GALFT gene (TrGALFT) has an ORF of 1.2 Kb and is organized in two copies in the T. rangeli genome. Antibodies raised against an internal fragment of the transferase demonstrated a 45 kDa protein coded by TrGALFT was localized in the whole cytoplasm, mainly in the Golgi apparatus and equally expressed in epimastigotes and trypomastigotes from T. rangeli. Despite the high sequence similarity with Trypanosoma cruzi and Leishmania spp. orthologous TrGALFT showed a substitution of the metal-binding DXD motif, conserved amongst glycosyltransferases, for a DXE functionally analogous motif. Moreover, a reduced number of GALFT genes were present in T. rangeli when compared with other pathogenic kinetoplastid species.
Collapse
Affiliation(s)
- Patrícia Hermes Stoco
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-970, Brazil.
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Sincero TCM, Levin DB, Simões CMO, Barardi CRM. Detection of hepatitis A virus (HAV) in oysters (Crassostrea gigas). Water Res 2006; 40:895-902. [PMID: 16457870 DOI: 10.1016/j.watres.2005.12.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2005] [Revised: 12/02/2005] [Accepted: 12/06/2005] [Indexed: 05/06/2023]
Abstract
Because shellfish (oysters, clams, and mussels) are filter-feeders, pathogens become concentrated within them, and human consumption of raw, or under-cooked shellfish can result in disease outbreaks. Identification of hepatitis A virus (HAV) in shellfish has been difficult for several reasons: the concentration of virions in shellfish tissues are very low, detection methods based on in vitro propagation are unreliable, recovery of virions from shellfish tissues is inefficient, and PCR inhibitors in shellfish tissues limit the success of RT-PCR. These facts underlie difficulties in determining cause and effect relationships between hepatitis A outbreaks and detection of HAV contamination in shellfish samples. We have developed a reliable and highly sensitive method for detection of HAV in oyster tissues at low levels (0.001 FFU/ml-fluorescent focus units per milliliter). Our method combines dissection of the gastrointestinal oyster tract, organic extraction before PEG precipitation, and RNA extraction with Trizol LS, followed by RT-PCR and hybridization using a digoxigenin-labeled HAV cDNA probe. Our results will benefit both public health officials concerned about hepatitis A infections caused by consumption of HAV-contaminated oysters and shellfish producers who require reliable methods for quality control of commercial oyster production.
Collapse
Affiliation(s)
- T C M Sincero
- Laboratório de Virologia Aplicada, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, CEP 88040-900, Florianópolis, Santa Catarina, Brazil
| | | | | | | |
Collapse
|
15
|
Andrighetti-Fröhner CR, Sincero TCM, da Silva AC, Savi LA, Gaido CM, Bettega JMR, Mancini M, de Almeida MTR, Barbosa RA, Farias MR, Barardi CRM, Simões CMO. Antiviral evaluation of plants from Brazilian Atlantic Tropical Forest. Fitoterapia 2005; 76:374-8. [PMID: 15890472 DOI: 10.1016/j.fitote.2005.03.010] [Citation(s) in RCA: 40] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2003] [Accepted: 03/08/2005] [Indexed: 12/01/2022]
Abstract
The antiviral activity of six medicinal plants from Brazilian Atlantic Tropical Forest was investigated against two viruses: herpes simplex virus type 1 (HSV-1) and poliovirus type 2 (PV-2). Cuphea carthagenensis and Tillandsia usneoides extracts showed the best antiherpes activity. T. usneoides dichloromethane, ethyl acetate and n-butanol extracts, and Lippia alba n-butanol extract showed inhibition of HSV-1, strain 29R/acyclovir resistant. In addition, only L. alba ethyl acetate extract showed antipoliovirus activity. These results corroborate that medicinal plants can be a rich source of potential antiviral compounds.
Collapse
Affiliation(s)
- C R Andrighetti-Fröhner
- Laboratório de Virologia Aplicada, Universidade Federal de Santa Catarina, Campus Universitário Trindade, Florianópolis, SC, Brazil
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Rigotto C, Sincero TCM, Simões CMO, Barardi CRM. Detection of adenoviruses in shellfish by means of conventional-PCR, nested-PCR, and integrated cell culture PCR (ICC/PCR). Water Res 2005; 39:297-304. [PMID: 15644238 DOI: 10.1016/j.watres.2004.10.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2004] [Revised: 09/21/2004] [Accepted: 10/04/2004] [Indexed: 05/24/2023]
Abstract
We tested three PCR based methodologies to detect adenoviruses associated with cultivated oysters. Conventional-PCR, nested-PCR, and integrated cell culture-PCR (ICC/PCR) were first optimized using oysters seeded with know amounts of Adenovirus serotype 5 (Ad5). The maximum sensitivity for Ad5 detection was determined for each method, and then used to detect natural adenovirus contamination in oysters from three aquiculture farms in Florianopolis, Santa Catarina State, Brazil, over a period of 6 months. The results showed that the nested-PCR was more sensitive (limit of detection: 1.2 PFU/g of tissue) than conventional-PCR and ICC-PCR (limit of detection for both: 1.2 x 10(2)PFU/g of tissue) for detection of Ad5 in oyster extracts. Nested-PCR was able to detect 90% of Ad5 contamination in harvested oyster samples, while conventional-PCR was unable to detect Ad5 in any of the samples. The present work suggests that detection of human adenoviruses can be used as a tool to monitor the presence of human viruses in marine environments where shellfish grow, and that nested-PCR is the method of choice.
Collapse
Affiliation(s)
- C Rigotto
- Laboratório de Virologia Aplicada, Departamento de Microbiologia e Parasitologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitario Trindade 88040-900, Florianópolis, Santa Catarina, Brazil
| | | | | | | |
Collapse
|