Evidence map›Paper›PMID 19668343›Full record

ArticlePloS one2009

Sterile protection against Plasmodium knowlesi in rhesus monkeys from a malaria vaccine: comparison of heterologous prime boost strategies.

George Jiang, Meng Shi, Solomon Conteh, Nancy Richie, Glenna Banania, Harini Geneshan, Anais Valencia, Priti Singh, Joao Aguiar, Keith Limbach and 11 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.9field-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

27 citing papers in PubMed, 49 citations in OpenAlex.

  1. Trial
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  6. Development of a cell-free protein synthesis system for practical use.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2021
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  13. The March Toward Malaria Vaccines.American journal of preventive medicine · 2015
    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

21 authors at 6 institutions in 3 countries.

George JiangNaval Medical Research Center, Malaria Program, Silver Spring, MD, USA.
Meng Shi
Solomon Conteh
Nancy Richie
Glenna Banania
Harini Geneshan
Anais Valencia
Priti Singh
Joao Aguiar
Keith Limbach
Kurt I Kamrud
Jonathan Rayner
Jonathan Smith
Joseph T Bruder
C Richter King
Takafumi Tsuboi
Satoru Takeo
Yaeta Endo
Denise L Doolan
Thomas L Richie
Walter R Weiss
Naval Medical Research Command · USAlphaVax (United States) · USEhime University · JPGenVec · USJackson Foundation · USQIMR Berghofer Medical Research Institute · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Using newer vaccine platforms which have been effective against malaria in rodent models, we tested five immunization regimens against Plasmodium knowlesi in rhesus monkeys. All vaccines included the same four P. knowlesi antigens: the pre-erythrocytic antigens CSP, SSP2, and erythrocytic antigens AMA1, MSP1. We used four vaccine platforms for prime or boost vaccinations: plasmids (DNA), alphavirus replicons (VRP), attenuated adenovirus serotype 5 (Ad), or attenuated poxvirus (Pox). These four platforms combined to produce five different prime/boost vaccine regimens: Pox alone, VRP/Pox, VRP/Ad, Ad/Pox, and DNA/Pox. Five rhesus monkeys were immunized with each regimen, and five Control monkeys received a mock vaccination. The time to complete vaccinations was 420 days. All monkeys were challenged twice with 100 P. knowlesi sporozoites given IV. The first challenge was given 12 days after the last vaccination, and the monkeys receiving the DNA/Pox vaccine were the best protected, with 3/5 monkeys sterilely protected and 1/5 monkeys that self-cured its parasitemia. There was no protection in monkeys that received Pox malaria vaccine alone without previous priming. The second sporozoite challenge was given 4 months after the first. All 4 monkeys that were protected in the first challenge developed malaria in the second challenge. DNA, VRP and Ad5 vaccines all primed monkeys for strong immune responses after the Pox boost. We discuss the high level but short duration of protection in this experiment and the possible benefits of the long interval between prime and boost.

Indexed as

AnimalsAntibodies, ProtozoanAntigens, ProtozoanEnzyme-Linked Immunosorbent AssayFluorescent Antibody TechniqueGenetic VectorsMacaca mulattaMalariaMalaria VaccinesPlasmodium knowlesiT-LymphocytesVirusesAntibodies, ProtozoanAntigens, ProtozoanMalaria Vaccines

Identifiers

PMID19668343
PMCPMC2720458
OpenAlexW2011312797

What OpenQuestion holds

Textmetadata
LicenceCC0
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.