Evidence map›Paper›PMID 31026260›Full record

ArticlePLoS neglected tropical diseases2019

Vaccination with a chikungunya virus-like particle vaccine exacerbates disease in aged mice.

Maria T Arévalo, Ying Huang, Cheryl A Jones, Ted M Ross

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

15 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
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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

4 authors at 1 institution in 1 country.

Maria T ArévaloCenter for Vaccines and Immunology, University of Georgia, Athens, GA, United States of America.
Ying HuangCenter for Vaccines and Immunology, University of Georgia, Athens, GA, United States of America.
Cheryl A JonesCenter for Vaccines and Immunology, University of Georgia, Athens, GA, United States of America.
Ted M RossCenter for Vaccines and Immunology, University of Georgia, Athens, GA, United States of America.ORCID 0000-0003-1947-7469
University of Georgia · US

Funding

Development of a Chikungunya Vaccine CandidateR21AI124132 · NIAID · ACCESS TO ADVANCED HEALTH INSTITUTE · PI BALDWIN, SUSAN LOUISE · 2017 to 2018
$461k
NIAID NIH HHS R21 AI124132
6 · The paper itself

Abstract

introductionChikungunya virus (CHIKV) is a re-emerging pathogen responsible for causing outbreaks of febrile disease accompanied with debilitating joint pain. Symptoms typically persist for two weeks, but more severe and chronic chikungunya illnesses have been reported, especially in the elderly. Currently, there are no licensed vaccines or antivirals against CHIKV available. In this study, we combined a CHIK virus-like particle (VLP) vaccine with different adjuvants to enhance immunogenicity and protection in both, adult and aged mice.

methodsCHIK VLP-based vaccines were tested in 6-8-week-old (adult) and 18-24-month-old (aged) female C57BL/6J mice. Formulations contained CHIK VLP alone or adjuvants: QuilA, R848, or Imject Alum. Mice were vaccinated three times via intramuscular injections. CHIKV-specific antibody responses were characterized by IgG subclass using ELISA, and by microneutralization assays. In addition, CHIKV infections were characterized in vaccinated and non-vaccinated adult mice and compared to aged mice.

resultsIn adult mice, CHIKV infection of the right hind foot induced significant swelling, which peaked by day 7 post-infection at approximately 170% of initial size. Viral titers peaked at 2.53 × 1010 CCID50/ml on day 2 post-infection. Mice vaccinated with CHIK VLP-based vaccines developed robust anti-CHIKV-specific IgG antibody responses that were capable of neutralizing CHIKV in vitro. CHIK VLP alone or CHIK plus QuilA administered by IM injections protected 100% of mice against CHIKV. In contrast, the antibody responses elicited by the VLP-based vaccines were attenuated in aged mice, with negligible neutralizing antibody titers detected. Unvaccinated, aged mice were resistant to CHIKV infection, while vaccination with CHIKV VLPs exacerbated disease.

conclusionsUnadjuvanted CHIK VLP vaccination elicits immune responses that protect 100% of adult mice against CHIKV infection. However, an improved vaccine/adjuvant combination is still necessary to enhance the protective immunity against CHIKV in the aged.

Indexed as

Adjuvants, ImmunologicAge FactorsAlum CompoundsAnimalsAntibodies, NeutralizingAntibodies, ViralChikungunya FeverChikungunya virusDisease Models, AnimalEnzyme-Linked Immunosorbent AssayFemaleImmunoglobulin GInjections, IntramuscularMice, Inbred C57BLVaccines, Virus-Like ParticleViral VaccinesAdjuvants, ImmunologicAlum Compoundsaluminum sulfateAntibodies, NeutralizingAntibodies, ViralImmunoglobulin GVaccines, Virus-Like ParticleViral Vaccines

Identifiers

PMID31026260
PMCPMC6485612
OpenAlexW2942250568

What OpenQuestion holds

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LicenceCC BY
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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.