Evidence map›Paper›PMID 17021246›Full record

ArticleClinical and vaccine immunology : CVI2006

Antibodies specific for the high-molecular-weight adhesion proteins of nontypeable Haemophilus influenzae are opsonophagocytic for both homologous and heterologous strains.

Linda E Winter, Stephen J Barenkamp

Open access · diamondAbstract read
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2006. 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
1.5field-weighted citation impact, top 20% 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

17 citing papers in PubMed, 31 citations in OpenAlex.

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  5. Recognition of conserved antigens by Th17 cells provides broad protection against pulmonaryProceedings of the National Academy of Sciences of the United States of America · 2018
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  9. Vaccines for Nontypeable Haemophilus influenzae: the Future Is Now.Clinical and vaccine immunology : CVI · 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

2 authors at 2 institutions in 1 country.

Linda E WinterDepartment of Pediatrics, St. Louis University School of Medicine, Saint Louis, MO 63104-1095, USA.
Stephen J Barenkamp
Cardinal Glennon Children’s Medical Center · USSaint Louis University · US

Funding

H. INFLUENZAE HMW ADHESION PROTEINS IN HOST IMMUNITYR01AI048066 · NIAID · SAINT LOUIS UNIVERSITY · PI BARENKAMP, STEPHEN J. · 2000 to 2002
$777k
NIAID NIH HHS AI 48066NIAID NIH HHS R01 AI048066
6 · The paper itself

Abstract

The HMW1/HMW2-like adhesion proteins of nontypeable Haemophilus influenzae (NTHI) are expressed by 75% of NTHI strains. Antibodies directed against these proteins are opsonophagocytic in vitro and are protective in an animal model of infection. The objective of the present study was to determine the opsonophagocytic activity of high-titer anti-HMW1/HMW2 immune sera against both homologous and heterologous NTHI strains. Chinchillas were immunized with purified HMW1/HMW2-like proteins from five prototype NTHI strains. Serum opsonophagocytic activity was monitored in an assay that uses a human promyelocytic cell line, HL-60, as the source of phagocytic cells. Preimmune sera did not demonstrate opsonophagocytic killing of any strains. In contrast, the immune sera demonstrated killing of the five homologous NTHI strains at titers ranging from 1:320 to 1:640. The immune sera also demonstrated killing of eight heterologous NTHI strains that express HMW1/HMW2-like proteins at titers ranging from 0 to 1:640. Killing of heterologous strains sometimes demonstrated a prozone phenomenon. None of the immune sera killed NTHI strains that did not express HMW1/HMW2-like proteins. Adsorption of immune sera with HMW1/HMW2-like proteins purified from either homologous or heterologous NTHI strains eliminated opsonophagocytic killing of homologous strains in most cases. These data demonstrate that antibodies produced following immunization with the HMW1/HMW2-like proteins are opsonophagocytic for both homologous and heterologous NTHI and strongly suggest that common epitopes recognized by functionally active antibodies exist on the HMW1/HMW2-like proteins of unrelated NTHI strains. The results argue for the continued investigation of the HMW1/HMW2-like proteins as potential vaccine candidates for the prevention of NTHI disease.

Indexed as

Adhesins, BacterialAnimalsAntibodies, BacterialAntibody SpecificityChinchillaHaemophilus influenzaeHL-60 CellsHumansImmune SeraImmunizationOpsonin ProteinsPhagocytosisAdhesins, BacterialAntibodies, BacterialHMW1 protein, bacteriaHMW2 protein, bacteriaImmune SeraOpsonin Proteins

Identifiers

PMID17021246
PMCPMC1694446
OpenAlexW2123983151

What OpenQuestion holds

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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.