ArticlePloS one2016
Performance Assessment of Four Chimeric Trypanosoma cruzi Antigens Based on Antigen-Antibody Detection for Diagnosis of Chronic Chagas Disease.
Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 3 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
40 citing papers in PubMed, 3 syntheses or guidelines pooled it, 49 citations in OpenAlex.
- Rapid diagnostic tests and ELISA for diagnosing chronic Chagas disease: Systematic revision and meta-analysis.PLoS neglected tropical diseases · 2022Pooled it
- Technological advances in the serological diagnosis of Chagas disease in dogs and cats: a systematic review.Parasites & vectors · 2022Pooled it
- Relevance of Trypanothione Reductase Inhibitors onOxidative medicine and cellular longevity · 2018Pooled it
- Trial
- Double-antigen sandwich ELISA based on chimeric antigens for detection of antibodies to Trypanosoma cruzi in human sera - A phase II study.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026Article
- Assessment of the Performance of Indirect Immunofluorescence Assay for Chagas Disease in Dogs Using a Reference Panel of Four Chimeric Proteins.Veterinary medicine and science · 2026Article
- Seroepidemiology of Chagas Disease Among Brazilian Indigenous Populations: Insights and Implications.Journal of epidemiology and global health · 2026Article
- Standardization of Serodiagnostic Methods for Trypanosoma cruzi.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Seroepidemiological survey and seropositivity rate for Trypanosoma cruzi infection in a community-based cardiac screening initiative in Feira de Santana, Bahia, Brazil.PLoS neglected tropical diseases · 2026Article
- Development of an ELISA Using Recombinant Chimeric SM Protein for Serological Detection of SARS-CoV-2 Antibodies.Methods and protocols · 2025Article
- Evaluation of four chimeric Trypanosoma cruzi recombinant antigens for serological diagnosis of chronic Chagas disease in dogs: a phase II study.Parasites & vectors · 2025Article
- Development of chimeric multivalent proteins for serological diagnosis of African animal trypanosomosis.Parasitology · 2025Article
- Diagnostic Performance of Chimeric Recombinant Antigens of Trypanosoma cruzi for Identifying Chagas Disease in Samples From Rio Grande do Sul.Tropical medicine & international health : TM & IH · 2025Article
- Prevalence of anti-Trypanosoma cruzi and anti-Leishmania infantum antibodies in domestic dogs from Tremedal, Bahia: insights from the Oxente Chagas Bahia Project.Parasites & vectors · 2025Article
- Comparison of Four Chimeric Antigens and Commercial Serological Assays for the Diagnosis of Trypanosoma cruzi Infection.The American journal of tropical medicine and hygiene · 2025Article
- Identification of highly conservedEmerging microbes & infections · 2024Article
- Evaluation of chimeric recombinant antigens for the serodiagnosis of Trypanosoma cruzi in dogs: a promising tool for Chagas disease surveillance.Parasites & vectors · 2024Article
- Design and expression of a chimeric recombinant antigen (SsIR-Ss1a) for the serodiagnosis of human strongyloidiasis: Evaluation of performance, sensitivity, and specificity.PLoS neglected tropical diseases · 2024Article
- IgG Isotypes Targeting a Recombinant Chimeric Protein of Trypanosoma cruzi in Different Clinical Presentations of Chronic Chagas Disease.The American journal of tropical medicine and hygiene · 2024Article
- Recombinant proteins as promising antigens applied to the immunodiagnosis of Chagas disease: a scoping review.Frontiers in microbiology · 2024Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The performance of serologic tests in chronic Chagas disease diagnosis largely depends on the type and quality of the antigen preparations that are used for detection of anti-Trypanosoma cruzi antibodies. Whole-cell T. cruzi extracts or recombinant proteins have shown variation in the performance and cross-reactivity. Synthetic chimeric proteins comprising fragments of repetitive amino acids of several different proteins have been shown to improve assay performances to detect Chagasic infections. Here, we describe the production of four chimeric T. cruzi proteins and the assessment of their performance for diagnostic purposes. Circular Dichroism spectra indicated the absence of well-defined secondary structures, while polydispersity evaluated by Dynamic Light Scattering revealed only minor aggregates in 50 mM carbonate-bicarbonate (pH 9.6), demonstrating that it is an appropriate buffering system for sensitizing microplates. Serum samples from T. cruzi-infected and non-infected individuals were used to assess the performance of these antigens for detecting antibodies against T. cruzi, using both enzyme-linked immunosorbent assay and a liquid bead array platform. Performance parameters (AUC, sensitivity, specificity, accuracy and J index) showed high diagnostic accuracy for all chimeric proteins for detection of specific anti-T. cruzi antibodies and differentiated seropositive individuals from those who were seronegative. Our data suggest that these four chimeric proteins are eligible for phase II studies.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.