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Costa-Oliveira CND, Paiva-Cavalcanti MD, Barros MDS, Nakazawa M, Melo MGND, Pessoa-E-Silva R, Torres DJL, Oliveira KKDS, Moreira LR, Morais RCSD, Goes TCD, Oliveira GMDA, Júnior WDO, Silva MMDME, Batista FP, Montenegro D, Lorena VMBD. Outbreak of Chagas disease in Brazil: Validation of a molecular diagnostic method. Exp Parasitol 2023; 247:108478. [PMID: 36731642 DOI: 10.1016/j.exppara.2023.108478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/01/2023]
Abstract
Chagas disease (CD), caused by the protozoan Trypanosoma cruzi (T. cruzi), affects millions of people worldwide. Polymerase Chain Reaction (PCR) and real-time quantitative PCR (qPCR) have been used as tools to monitor parasitic levels in the bloodstream of individuals exposed to infection, thus enabling the monitoring of relapses and the effectiveness of therapy, for example. The aim of this study was to evaluate the TcSAT-IAM system, developed by our research group, on samples from patients with suspected Chagas disease infection. Initially, primer systems were developed for the detection of the nuclear DNA (SAT-DNA) from T. cruzi (TcSAT-IAM). The Cruzi system, predicted in the literature, and TcSAT-IAM were then evaluated in relation to their analytical sensitivity, specificity and efficiency. Afterwards, the applicability of the qPCR technique using both systems (separately) for the diagnosis of acute CD was evaluated in samples from 77 individuals exposed to the outbreak that occurred in Pernambuco-Brazil, relating the results obtained to those of the classical diagnostic methods recommended for this stage of the infection. TcSAT-IAM and Cruzi had a detection limit of 1 fg of target DNA (0,003 parasites). Thirty-eight cases were recorded, 28 by laboratory criteria and 10 by clinical and epidemiological criteria. Blood samples from 77 subjects were submitted to qPCR by both systems, reaching an agreement of 89.61% between them. After analyzes between systems and diagnostic criteria, the TcSAT-IAM showed sensitivity and specificity of 52.36% (CI 37.26-67.52) and 92.31% (CI 79.68-97.35), respectively, accuracy of 72.73% and moderate agreement. The TcSAT-IAM showed an accuracy of 72.58% and 75% in relation to parasitological and serological tests (IgM anti-T. cruzi), respectively. Therefore, quantitative PCR should be incorporated into the diagnosis of suspected acute cases of Chagas disease.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Filipe Prohaska Batista
- University Hospital Oswaldo Cruz (HUOC) - Pernambuco University (UPE), Recife, Pernambuco, Brazil
| | - Demetrius Montenegro
- University Hospital Oswaldo Cruz (HUOC) - Pernambuco University (UPE), Recife, Pernambuco, Brazil
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Medeiros CDA, Silva MBA, Oliveira ALSD, Alves SMM, Oliveira Júnior WD, Medeiros ZMD. Spatial analysis of the natural infection index for Triatomines and the risk of Chagas disease transmission in Northeastern Brazil. Rev Inst Med Trop Sao Paulo 2023; 65:e32. [PMID: 37098920 PMCID: PMC10124779 DOI: 10.1590/s1678-9946202365032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 02/23/2023] [Indexed: 04/27/2023] Open
Abstract
This study aimed to analyze the spatial pattern of natural infection index (NII) for triatomines and the risk of Chagas disease transmission in an endemic area of Northeastern Brazil. An ecological study was conducted, based on 184 municipalities in five mesoregions. The NII for triatomines was evaluated in the Pernambuco State, Brazil, from 2016 to 2018. Spatial autocorrelations were evaluated using Global Moran Index (I) and Local Moran Index (II) and were considered positive when I > 0 and p < 0.05, respectively. In total, 7,302 triatomines belonging to seven different species were detected. Triatoma brasiliensis had the highest frequency (53%; n = 3,844), followed by Triatoma pseudomaculata (25%; n = 1,828) and Panstrongylus lutzi (18.5%; n=1,366). The overall NII was 12%, and the higher NII values were P. lutzi (21%) and Panstrongylus megistus (18%). In the mesoregions of Zona da Mata, Agreste, Sertao, and Sertao do Sao Francisco, 93% of triatomines were detected indoors. The global spatial autocorrelation of I to NII was positive (0.2; p = 0.01), and II values calculated using BoxMap, MoranMap, Lisa Cluster Map were statistically significant for natural infections. With regard to the risk areas for the presence of triatomines, Zone 2 (the Agreste and Sertao regions) presented a relative risk of 3.65 compared to other areas in the state. Our study shows the potential areas of vector transmission of Chagas disease. In this study, the application of different methods of spatial analysis made it possible to locate these areas, which would not have been identified by only applying epidemiological indicators.
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Affiliation(s)
- Carolina de Araújo Medeiros
- Universidade de Pernambuco, Programa de Pós-Graduação em Ciências da Saúde, Recife, Pernambuco, Brazil
- Universidade de Pernambuco, Pronto Socorro Cardiológico de Pernambuco, Ambulatório de Doença de Chagas e Insuficiência Cardíaca, Recife, Pernambuco, Brazil
- Universidade de Pernambuco, Faculdade de Enfermagem Nossa Senhora das Graças, Recife, Pernambuco, Brazil
| | - Maria Beatriz Araújo Silva
- Universidade de Pernambuco, Faculdade de Enfermagem Nossa Senhora das Graças, Recife, Pernambuco, Brazil
- Secretaria Estadual de Saúde de Pernambuco, Laboratório Central de Saúde Pública "Dr. Milton Bezerra Sobral", Recife, Pernambuco, Brazil
| | - André Luiz Sá de Oliveira
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Núcleo de Estatística e Geoprocessamento Recife, Pernambuco, Brazil
| | - Sílvia Marinho Martins Alves
- Universidade de Pernambuco, Pronto Socorro Cardiológico de Pernambuco, Ambulatório de Doença de Chagas e Insuficiência Cardíaca, Recife, Pernambuco, Brazil
| | - Wilson de Oliveira Júnior
- Universidade de Pernambuco, Pronto Socorro Cardiológico de Pernambuco, Ambulatório de Doença de Chagas e Insuficiência Cardíaca, Recife, Pernambuco, Brazil
| | - Zulma Maria de Medeiros
- Universidade de Pernambuco, Programa de Pós-Graduação em Ciências da Saúde, Recife, Pernambuco, Brazil
- Fundação Oswaldo Cruz, Instituto Aggeu Magalhães, Departamento de Parasitologia Recife, Pernambuco, Brazil
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Caminha MA, de Lorena VMB, de Oliveira Júnior W, Perales J, Carvalho PC, Lima DB, Cavalcanti MDGAM, Martins SM, Valente RH, Menna-Barreto RFS. Data on antigen recognition hindrance by antibodies covalently immobilized to Protein G magnetic beads by dimethyl pimelimidate (DMP) cross-linking. Data Brief 2018; 22:516-521. [PMID: 30671503 PMCID: PMC6327068 DOI: 10.1016/j.dib.2018.12.057] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/14/2018] [Accepted: 12/17/2018] [Indexed: 11/25/2022] Open
Abstract
The data presented herein is related to the article entitled "Trypanosoma cruzi immunoproteome: calpain-like CAP5.5 differentially detected throughout distinct stages of human Chagas disease cardiomyopathy" [1]. Electrophoretic analyses under denaturing and reducing conditions indicate that covalent immobilization of human IgG to Protein G magnetic beads by cross-linking with 50 mM dimethyl pimelimidate hinders the recognition of T. cruzi antigens in immunoprecipitation assays.
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Affiliation(s)
- Marcelle A Caminha
- Laboratório de Biologia Celular, IOC, Fiocruz, Rio de Janeiro, RJ, Brazil.,Laboratório de Toxinologia, IOC, Fiocruz, Rio de Janeiro, RJ, Brazil
| | | | | | - Jonas Perales
- Laboratório de Toxinologia, IOC, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Paulo C Carvalho
- Computational Mass Spectrometry & Proteomics Group, ICC, Fiocruz, Curitiba, PR, Brazil
| | - Diogo B Lima
- Computational Mass Spectrometry & Proteomics Group, ICC, Fiocruz, Curitiba, PR, Brazil.,Mass Spectrometry for Biology Unit, CNRS USR 2000, Institut Pasteur, Paris, France
| | | | | | - Richard H Valente
- Laboratório de Toxinologia, IOC, Fiocruz, Rio de Janeiro, RJ, Brazil
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Medeiros CDA, Secundo IV, Silveira CADM, del Castilho JM, de Albuquerque ALT, Martins SM, de Oliveira Júnior W, Lorenzi-Filho G, Drager LF, Pedrosa RP. Obstructive Sleep Apnea is Common and Associated with Heart Remodeling in Patients with Chagas Disease. Arq Bras Cardiol 2018; 111:364-372. [PMID: 30088557 PMCID: PMC6173344 DOI: 10.5935/abc.20180131] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 05/09/2018] [Accepted: 05/09/2018] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Chagas Disease (CD) is an important cause of morbimortality due to heart failure and malignant arrhythmias worldwide, especially in Latin America. OBJECTIVE To investigate the association of obstructive sleep apnea (OSA) with heart remodeling and cardiac arrhythmias in patients CD. METHODS Consecutive patients with CD, aged between 30 to 65 years old were enrolled. Participants underwent clinical evaluation, sleep study, 24-hour Holter monitoring, echocardiogram and ambulatory blood pressure monitoring. RESULTS We evaluated 135 patients [age: 56 (45-62) years; 30% men; BMI: 26 ± 4 kg/m2, Chagas cardiomyopathy: 70%]. Moderate to severe OSA (apnea-hypopnea index, AHI, ≥ 15 events/h) was present in 21% of the patients. OSA was not associated with arrhythmias in this population. As compared to patients with mild or no OSA, patients with moderate to severe OSA had higher frequency of hypertension (79% vs. 72% vs. 44%, p < 0.01) higher nocturnal systolic blood pressure: 119 ± 17 vs. 113 ± 13 vs. 110 ± 11 mmHg, p = 0.01; larger left atrial diameter [37 (33-42) vs. 35 (33-39) vs. 33 (30-36) mm, p < 0.01]; and a greater proportion of left ventricular dysfunction [LVEF < 50% (39% vs. 28% vs. 11%), p < 0.01], respectively. Predictor of left atrial dimension was Log10 (AHI) (b = 3.86, 95% CI: 1.91 to 5.81; p < 0.01). Predictors of ventricular dysfunction were AHI > 15 events/h (OR = 3.61, 95% CI: 1.31 - 9.98; p = 0.01), systolic blood pressure (OR = 1.06, 95% CI: 1.02 - 1.10; p < 0.01) and male gender (OR = 3.24, 95% CI: 1.31 - 8.01; p = 0.01). CONCLUSIONS OSA is independently associated with atrial and ventricular remodeling in patients with CD.
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MESH Headings
- Adult
- Aged
- Analysis of Variance
- Anthropometry
- Arrhythmias, Cardiac/etiology
- Arrhythmias, Cardiac/pathology
- Arrhythmias, Cardiac/physiopathology
- Blood Pressure Monitoring, Ambulatory
- Chagas Cardiomyopathy/complications
- Chagas Cardiomyopathy/pathology
- Chagas Cardiomyopathy/physiopathology
- Echocardiography
- Electrocardiography, Ambulatory
- Female
- Heart Atria/pathology
- Heart Atria/physiopathology
- Humans
- Male
- Middle Aged
- Multivariate Analysis
- Reference Values
- Severity of Illness Index
- Sleep Apnea, Obstructive/etiology
- Sleep Apnea, Obstructive/pathology
- Sleep Apnea, Obstructive/physiopathology
- Statistics, Nonparametric
- Ventricular Dysfunction, Left/etiology
- Ventricular Dysfunction, Left/physiopathology
- Ventricular Remodeling
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Affiliation(s)
- Carolina de Araújo Medeiros
- Laboratório do Sono e Coração do Pronto
Socorro Cardiológico de Pernambuco (PROCAPE) da Universidade de Pernambuco,
Recife, PE - Brazil
- Ambulatório de Doença de Chagas e
insuficiência Cardíaca - PROCAPE da Universidade de Pernambuco,
Recife, PE - Brazil
| | - Isaac Vieira Secundo
- Laboratório do Sono e Coração do Pronto
Socorro Cardiológico de Pernambuco (PROCAPE) da Universidade de Pernambuco,
Recife, PE - Brazil
| | - Carlos Antônio da Mota Silveira
- Laboratório do Sono e Coração do Pronto
Socorro Cardiológico de Pernambuco (PROCAPE) da Universidade de Pernambuco,
Recife, PE - Brazil
| | - José Maria del Castilho
- Laboratório do Sono e Coração do Pronto
Socorro Cardiológico de Pernambuco (PROCAPE) da Universidade de Pernambuco,
Recife, PE - Brazil
| | | | - Sílvia Marinho Martins
- Ambulatório de Doença de Chagas e
insuficiência Cardíaca - PROCAPE da Universidade de Pernambuco,
Recife, PE - Brazil
| | - Wilson de Oliveira Júnior
- Ambulatório de Doença de Chagas e
insuficiência Cardíaca - PROCAPE da Universidade de Pernambuco,
Recife, PE - Brazil
| | - Geraldo Lorenzi-Filho
- Instituto do Coração (InCor) - Hospital das
Clínicas da Faculdade de Medicina da Universidade de São Paulo
(HCFMUSP), São Paulo, SP - Brazil
| | - Luciano F. Drager
- Instituto do Coração (InCor) - Hospital das
Clínicas da Faculdade de Medicina da Universidade de São Paulo
(HCFMUSP), São Paulo, SP - Brazil
| | - Rodrigo Pinto Pedrosa
- Laboratório do Sono e Coração do Pronto
Socorro Cardiológico de Pernambuco (PROCAPE) da Universidade de Pernambuco,
Recife, PE - Brazil
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de Oliveira Júnior W. [Complete attention to Chagas' disease patient. A proposal for the caring]. Arq Bras Cardiol 2005; 84:1-2. [PMID: 15841836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
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