Evidence map›Paper›PMID 30041676›Full record

ArticleVirology journal2018

Enzyme-linked immunosorbent assay using recombinant envelope protein 2 antigen for diagnosis of Chikungunya virus.

Marcílio Jorge Fumagalli, William Marciel de Souza, Danillo Lucas Alves Espósito, Angélica Silva, Marilia Farignoli Romeiro, Edson Zangiacomi Martinez, Benedito Antônio Lopes da Fonseca, Luiz Tadeu Moraes Figueiredo

Open access · goldAbstract read
In one paragraph

Article in Virology journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 8% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

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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

8 authors at 1 institution in 1 country.

Marcílio Jorge FumagalliVirology Research Center, Ribeirão Preto Medical School of University of São Paulo, Ribeirão Preto, São Paulo, Brazil. marcilio_jorge@hotmail.com.ORCID 0000-0002-0207-5423
William Marciel de SouzaVirology Research Center, Ribeirão Preto Medical School of University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Danillo Lucas Alves EspósitoVirology Research Center, Ribeirão Preto Medical School of University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Angélica SilvaVirology Research Center, Ribeirão Preto Medical School of University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Marilia Farignoli RomeiroVirology Research Center, Ribeirão Preto Medical School of University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Edson Zangiacomi MartinezSocial Medicine, Ribeirão Preto Medical School of University of São Paulo, Ribeirao Preto, São Paulo, Brazil.
Benedito Antônio Lopes da FonsecaVirology Research Center, Ribeirão Preto Medical School of University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Luiz Tadeu Moraes FigueiredoVirology Research Center, Ribeirão Preto Medical School of University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Universidade de São Paulo · BR

Funding

Fundação de Amparo à Pesquisa do Estado de São Paulo 2014/20851-8Fundação de Amparo à Pesquisa do Estado de São Paulo 2017/13981-0Fundação de Amparo à Pesquisa do Estado de São Paulo (BR) 2012/24150-9Fundação de Amparo à Pesquisa do Estado de São Paulo (BR) 2016/01414-1
6 · The paper itself

Abstract

backgroundChikungunya (CHIKV) virus is an important mosquito-borne virus causing outbreaks of acute febrile illness with arthropathy. The detection of specific antibodies against CHIKV is used for diagnosis after the acute viremic phase of the disease. However, a major challenge for serologic diagnosis of CHIKV and other alphaviruses is the cross-reactivity of antibodies to common antigens among these viruses. In the present study, we have developed an enzyme-linked immunosorbend assay using a recombinant envelope protein 2 of CHIKV produced in Escherichia coli system, as a capture antigen.

resultsHigh titers (1600 to 12,800) of anti-CHIKV antibodies were detected in human sera analyzed by the CHIKV assay, suggesting it may detect low levels of the antibodies presence. On the other side, cross-reactivity was not observed in mouse hyperimmune sera to Mayaro virus and other alphaviruses analyzed by the CHIKV immunosorbend assay, suggesting it is a CHIKV-specific test. Fifty-nine human serum samples of CHIKV infection suspected cases were tested for immunoglobulin G (IgG) and M (IgM) antibodies detection using the CHIKV immunosorbend assay. A total of 44% (26/59) of samples were positive for IgG to CHIKV, determining 89.66% sensitivity and 100% specificity when the assay is compared to a CHIKV-specific neutralization assay. In addition, 40.6% (24/59) of samples were positive for IgM, determining 92.48% sensitivity and 79.04% specificity by a Bayesian method in the absence of a gold standard. Moreover, CHIKV immunosorbend assay showed similar sensibilities to a commercial immunochromatography assay (Lumiquick, USA) for CHIKV IgG and IgM detection.

conclusionIn short, we have developed a rapid, simple, specific and sensitive CHIKV immunosorbend assay for IgG and IgM detection and our results showed potential applicability on the diagnosis of infections by this virus.

Indexed as

Enzyme-Linked Immunosorbent AssayAntibodies, NeutralizingAntibodies, ViralAntigens, ViralChikungunya FeverChikungunya virusHumansImmunoglobulin GImmunoglobulin MNeutralization TestsRecombinant ProteinsSensitivity and SpecificityViral Envelope ProteinsAntibodies, NeutralizingAntibodies, ViralAntigens, ViralImmunoglobulin GImmunoglobulin MRecombinant ProteinsViral Envelope ProteinsAntibodies detectionChikungunya virusEnvelope protein 2Serology

Identifiers

PMID30041676
PMCPMC6056935
OpenAlexW2884067958

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.