Evidence map›Paper›PMID 21715580›Full record

ArticleClinical and vaccine immunology : CVI2011

Development of an automated, high-throughput bactericidal assay that measures cellular respiration as a survival readout for Neisseria meningitidis.

Puiying A Mak, George F Santos, Kelly-Anne Masterman, Jeff Janes, Bill Wacknov, Kay Vienken, Marzia Giuliani, Ann E Herman, Michael Cooke, M Lamine Mbow and 1 more

Abstract readEvaluation Study
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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

17 citing papers in PubMed.

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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

11 authors.

Puiying A MakLead Discovery, Genomics Institute of Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, California 92121, USA.
George F Santos
Kelly-Anne Masterman
Jeff Janes
Bill Wacknov
Kay Vienken
Marzia Giuliani
Ann E Herman
Michael Cooke
M Lamine Mbow
John Donnelly

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Complement-mediated bactericidal activity has long been regarded as the serological correlate of protective immunity against Neisseria meningitidis. This was affirmed in 2005 at a WHO-sponsored meningococcal serology standardization workshop. The assay currently employed by most laboratories involves determining surviving bacterial colony counts on agar as a readout which is labor-intensive, time-consuming, and not amendable to rapid data analysis for clinical trials. Consequently, there is an acute need to develop a sensitive, high-throughput bactericidal assay to enable a rapid and robust assessment of the effectiveness of vaccine candidates. To this end, we have developed an automated, kinetic assay based on the fluorescent respiration product of resazurin which reduces assay volume, shortens assay time, and facilitates automation of data analysis. We demonstrate proof of concept for applicability of this high-throughput system with multiple meningococcal strains and utilizing different lots of human complement. The assay is robust and highly reproducible. Titers obtained by the fluorescence readout method are strongly correlated with the data obtained using the conventional, agar plate-based assay. These results demonstrate that the detection of bacteria that have survived the bactericidal reaction by measuring metabolic activity using a fluorescent dye as an alternative readout is a promising approach for the development of a high-throughput bactericidal assay.

Indexed as

Blood Bactericidal ActivityAntibodies, BacterialAutomationFluorescent DyesHigh-Throughput Screening AssaysHumansImmunoassayMeningococcal VaccinesMicrobial ViabilityNeisseria meningitidisOxazinesReproducibility of ResultsStaining and LabelingXanthenesAntibodies, BacterialFluorescent DyesMeningococcal VaccinesOxazinesresazurinXanthenes

Identifiers

PMID21715580
PMCPMC3147359

What OpenQuestion holds

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Registered trials

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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.