Evidence map›Paper›PMID 33126179›Full record

ArticleBiosensors & bioelectronics2021

Dual lateral flow optical/chemiluminescence immunosensors for the rapid detection of salivary and serum IgA in patients with COVID-19 disease.

Aldo Roda, Simone Cavalera, Fabio Di Nardo, Donato Calabria, Sergio Rosati, Patrizia Simoni, Barbara Colitti, Claudio Baggiani, Matilde Roda, Laura Anfossi

Open access · greenAbstract read
In one paragraph

Article in Biosensors & bioelectronics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
3.7field-weighted citation impact, top 4% 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

78 citing papers in PubMed, 189 citations in OpenAlex.

  1. Article
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  3. Predicting SARS-CoV-2-specific CD4Clinical and experimental medicine · 2025
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  19. A chemical timer approach to delayed chemiluminescence.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  20. Review

18 more citing papers are in PubMed but not listed here.

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

10 authors at 2 institutions in 1 country.

Aldo RodaDepartment of Chemistry G. Ciamician, University of Bologna, Italy; INBB, Biostructures and Biosystems National Institute, Rome, Italy. Electronic address: aldo.roda@unibo.it.
Simone CavaleraDepartment of Chemistry, University of Turin, Italy.
Fabio Di NardoDepartment of Chemistry, University of Turin, Italy.
Donato CalabriaDepartment of Chemistry G. Ciamician, University of Bologna, Italy.
Sergio RosatiDepartment of Veterinary Science, University of Turin, Italy.
Patrizia SimoniDepartment of Medical and Surgical Sciences, University of Bologna, Italy.
Barbara ColittiDepartment of Veterinary Science, University of Turin, Italy.
Claudio BaggianiDepartment of Chemistry, University of Turin, Italy.
Matilde RodaDepartment of Medical and Surgical Sciences, University of Bologna, Italy.
Laura AnfossiDepartment of Chemistry, University of Turin, Italy. Electronic address: laura.anfossi@unito.it.
University of Turin · ITUniversity of Bologna · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To accurately diagnose COVID-19 infection and its time-dependent progression, the rapid, sensitive, and noninvasive determination of immunoglobulins A specific to SARS-CoV-2 (IgA) in saliva and serum is needed to complement tests that detect immunoglobulins G and M. We have developed a dual optical/chemiluminescence format of a lateral flow immunoassay (LFIA) immunosensor for IgA in serum and saliva. A recombinant nucleocapsid antigen specifically captures SARS-CoV-2 antibodies in patient specimens. A labelled anti-human IgA reveals the bound IgA fraction. A dual colorimetric and chemiluminescence detection enables the affordable and ultrasensitive determination of IgA to SARS-CoV-2. Specifically, a simple smartphone-camera-based device measures the colour signal provided by nanogold-labelled anti-human IgA. For the ultrasensitive chemiluminescence transduction, we used a contact imaging portable device based on cooled CCD, and measured the light signal resulting from the reaction of the HRP-labelled anti-human IgA with a H

Indexed as

Antibodies, ViralAntibody SpecificityBiosensing TechniquesColorimetryCOVID-19COVID-19 Serological TestingEquipment DesignHumansImmunoglobulin AImmunoglobulin A, SecretoryLuminescent MeasurementsSalivaSARS-CoV-2Antibodies, ViralImmunoglobulin AImmunoglobulin A, SecretoryChemiluminescenceCOVID-19Immunoglobulin aRapid serological testsSalivaSARS-CoV-2

Identifiers

PMID33126179
PMCPMC7586100
OpenAlexW3095920756

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.