Evidence map›Paper›PMID 32518668›Full record

ArticleTropical diseases, travel medicine and vaccines2020

Tetravalent dengue DNA vaccine is not immunogenic when delivered by retrograde infusion into salivary glands.

Guy El Helou, Todd A Ponzio, Joseph F Goodman, Maria Blevins, David L Caudell, Kanakatte S Raviprakash, Daniel Ewing, Maya Williams, Kevin R Porter, John W Sanders

Open access · goldAbstract read
In one paragraph

Article in Tropical diseases, travel medicine and vaccines, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.4field-weighted citation impact, top 34% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. 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

10 authors at 4 institutions in 1 country.

Guy El HelouDepartment of Medicine, Division of Infectious Diseases and Global Medicine, University of Florida, Gainesville, FL USA.ORCID 0000-0001-8787-5624
Todd A PonzioDepartment of Medicine, Division of Infectious Diseases, Wake Forest School of Medicine, Winston-Salem, NC USA.
Joseph F GoodmanDepartment of Otolaryngology, George Washington School of Medicine and Health Sciences, Washington, DC 20037 USA.
Maria BlevinsDepartment of Medicine, Division of Infectious Diseases, Wake Forest School of Medicine, Winston-Salem, NC USA.
David L CaudellDepartment of Pathology, Section on Comparative Medicine, Wake Forest School of Medicine, Winston-Salem, NC USA.
Kanakatte S RaviprakashNaval Medical Research Center, Silver Spring, MD USA.
Daniel EwingNaval Medical Research Center, Silver Spring, MD USA.
Maya WilliamsNaval Medical Research Center, Silver Spring, MD USA.
Kevin R PorterNaval Medical Research Center, Silver Spring, MD USA.
John W SandersDepartment of Medicine, Division of Infectious Diseases, Wake Forest School of Medicine, Winston-Salem, NC USA.
Naval Medical Research Command · USWake Forest University · USGeorge Washington University · USUniversity of Florida · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

INTRODUCTION AND

backgroundA tetravalent DNA vaccine for Dengue virus is under development but has not yet achieved optimal immunogenicity. Salivary glands vaccination has been reported efficacious in rodents and dogs. We report on a pilot study testing the salivary gland as a platform for a Dengue DNA vaccine in a non-human primate model. MATERIALS AND

methodsFour cynomolgus macaques were used in this study. Each macaque was pre-medicated with atropine and sedated with ketamine. Stensen's duct papilla was cannulated with a P10 polyethylene tube, linked to a 500ul syringe. On the first two infusions, all macaques were infused with 300ul of TVDV mixed with 2 mg of zinc. For the 3rd infusion, to increase transfection into salivary tissue, two animals received 100uL TVDV mixed with 400uL polyethylenimine 1μg/ml (PEI) and the other two animals received 500uL TVDV with zinc. Antibody titers were assessed 4 weeks following the second and third infusion. RESULTS AND

conclusionsSGRI through Stensen's duct is a well-tolerated, simple and easy to reproduce procedure. TVDV infused into macaques salivary glands elicited a significantly weaker antibody response than with different delivery methods.

Indexed as

DNA vaccineNon-human primateSalivary gland infusionTetravalent dengue vaccine

Identifiers

PMID32518668
PMCPMC7268334
OpenAlexW3033470036

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.