Evidence map›Paper›PMID 11724850›Full record

ArticleJournal of clinical microbiology2001

Enzyme-linked immunosorbent assay for serological diagnosis of Chagas' disease employing a Trypanosoma cruzi recombinant antigen that consists of four different peptides.

A W Ferreira, Z R Belem, E A Lemos, S G Reed, A Campos-Neto

Open access · greenAbstract readEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
1.3field-weighted citation impact, top 19% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Assessment of Alinity s ChagasLife (Basel, Switzerland) · 2024
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  6. Analysis ofVeterinary sciences · 2024
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  7. Characterization of NovelInternational journal of molecular sciences · 2024
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  8. Frontiers in microbiology · 2024
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  11. Molecular Characterization of Tc964, A Novel Antigenic Protein fromInternational journal of molecular sciences · 2020
    Article
  12. The American journal of tropical medicine and hygiene · 2018
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

A W FerreiraBiolab-Mérieux S/A-Sao Paulo, Sao Paulo, Brazil. clawsmbf@usp.br
Z R Belem
E A Lemos
S G Reed
A Campos-Neto
Corixa Corporation · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Serological tests to detect Trypanosoma cruzi antibodies have been used for screening blood donors, for epidemic studies, and for diagnosis of probably infected persons. Among different tests, the enzyme-linked immunosorbent assay (ELISA) with total, semipurified, or synthetic antigens has been widely used, mainly due to its easy automation. Aiming to improve serological studies concerning Chagas' disease, we have developed and evaluated a new test, the TcF-ELISA, using an artificially engineered recombinant antigen, which contains tandem sequences of different T. cruzi-specific peptides. The sensibility of the TcF-ELISA was determined with 101 serum samples from chagasic patients well-defined by clinical and epidemiological criteria. The specificity was determined with 39 serum samples from leishmaniasis or kala-azar patients and 150 serum samples from nonchagasic blood donors from Sao Paulo, Brazil. The TcF-ELISA showed 100% sensitivity and 98.94% of specificity. Compared with conventional ELISA (with semipurified T. cruzi epimastigote antigens), the TcF-ELISA showed advantages; for example, it distinguishes better between reagent and nonreagent serum and provides better precision and a lower occurrence of leishmaniasis cross-reactions. Our studies demonstrate high reproducibility between two different lots of the TcF ELISA and its applicability for the serological diagnosis of Chagas' disease.

Indexed as

AnimalsAntibodies, ProtozoanAntigens, ProtozoanChagas DiseaseEnzyme-Linked Immunosorbent AssayHumansPeptidesRecombinant ProteinsReproducibility of ResultsSensitivity and SpecificityTrypanosoma cruziAntibodies, ProtozoanAntigens, ProtozoanPeptidesRecombinant Proteins

Identifiers

PMID11724850
PMCPMC88554
OpenAlexW2132737217

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.