Evidence map›Paper›PMID 21736913›Full record

ArticleVaccine2011

Delta inulin polysaccharide adjuvant enhances the ability of split-virion H5N1 vaccine to protect against lethal challenge in ferrets.

R Colby Layton, Nikolai Petrovsky, Andrew P Gigliotti, Zemmie Pollock, Jennifer Knight, Nathaniel Donart, John Pyles, Kevin S Harrod, Peng Gao, Frederick Koster

Abstract read
In one paragraph

Article in Vaccine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
3.5field-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

36 citing papers in PubMed, 66 citations in OpenAlex.

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  14. Passive inhalation of dry powder influenza vaccine formulations completely protects chickens against H5N1 lethal viral challenge.European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V · 2018
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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

10 authors at 2 institutions in 2 countries.

R Colby LaytonInfectious Diseases, Lovelace Respiratory Research Institute, Albuquerque, NM 87108, USA.
Nikolai Petrovsky
Andrew P Gigliotti
Zemmie Pollock
Jennifer Knight
Nathaniel Donart
John Pyles
Kevin S Harrod
Peng Gao
Frederick Koster
Lovelace Respiratory Research Institute · USVaxine (Australia) · AU

Funding

Novel vaccine adjuvants to counter bioterrorist threatsU01AI061142 · NIAID · FLINDERS UNIVERSITY OF SOUTH AUSTRALIA · PI PETROVSKY, NIKOLAI · 2005 to 2009
$3.5M
T5000 Diagnostic System in Ferret Model of InfluenzaU01AI074561 · NIAID · LOVELACE BIOMEDICAL & ENVIRONMENTAL RESEARCH INSTITUTE · PI KOSTER, FREDERICK T · 2007 to 2009
$2.2M
NIAID NIH HHS HHSN272200800039CNIAID NIH HHS U01 AI061142NIAID NIH HHS U01AI061142NIAID NIH HHS U01 AI074561PHS HHS HHSN 266-200-400-095I
6 · The paper itself

Abstract

backgroundThe reduced immunogenicity of the H5 hemagglutinin (HA), compared to seasonal HA serotypes, has stimulated searches for effective adjuvants to improve H5 vaccine efficacy. This study examined the immunogenicity and protective efficacy in ferrets immunized with a split-virion H5N1 vaccine combined with Advax™, a novel delta inulin-based polysaccharide adjuvant technology that has previously demonstrated ability to augment humoral and cellular immunity to co-administered antigens.

methodsFerrets were vaccinated twice 21 days apart with 7.5 μg or 22.5 μg of a split-virion preparation of A/Vietnam/1203/2004 with or without adjuvant. An additional group received just one immunization with 22.5 μg HA plus adjuvant. Serum antibodies were measured by hemagglutination inhibition and microneutralization assays. Vaccinated animals were challenged intranasally 21 days after the last immunization with 10(6) EID(50) of the homologous strain. Morbidity was assessed by observed behavior, weight loss, temperature, cytopenias, histopathology, and viral load.

resultsNo serum neutralization antibody was detected after two immunizations with unadjuvanted vaccine. Two immunizations with high or low dose adjuvanted vaccine stimulated high neutralizing antibody titers. Survival was 100% in all groups receiving adjuvanted-vaccine including the single dose group, compared to 67% survival with unadjuvanted vaccine, and 0% survival in saline or adjuvant-alone controls. Minimal morbidity was seen in all animals receiving adjuvanted vaccine, and was limited to rhinorrhea and mild thrombocytopenia, without fever, weight loss, or reduced activity. H5N1 virus was cleared from the nasal wash by day 4 post-challenge only in animals receiving adjuvanted vaccine which also prevented viral invasion of the brain in most animals.

conclusionsIn this initial study, Advax™ adjuvant formulations improved the protective efficacy of a split-virion H5N1 vaccine as measured by significantly enhanced immunogenicity, survival, and reduced morbidity.

Indexed as

Adjuvants, ImmunologicAnimalsAntibodies, NeutralizingAntibodies, ViralFerretsHemagglutinin Glycoproteins, Influenza VirusImmunization, SecondaryInfluenza A Virus, H5N1 SubtypeInfluenza VaccinesInulinOrthomyxoviridae InfectionsViral LoadAdjuvants, ImmunologicAntibodies, NeutralizingAntibodies, Viralhemagglutinin, avian influenza A virusHemagglutinin Glycoproteins, Influenza VirusInfluenza VaccinesInulin

Identifiers

PMID21736913
PMCPMC3156374
OpenAlexW1996779770

What OpenQuestion holds

Textmetadata
LicenceTDM
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.