Evidence map›Paper›PMID 19047406›Full record

ArticleInfection and immunity2009

Binding of complement factor H (fH) to Neisseria meningitidis is specific for human fH and inhibits complement activation by rat and rabbit sera.

Dan M Granoff, Jo Anne Welsch, Sanjay Ram

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 109 papers.

0numbers the graph read from it
0cells of the map it votes in
109citing papers in PubMed
9.3field-weighted citation impact, top 1% 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

109 citing papers in PubMed, 160 citations in OpenAlex.

  1. Trial
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  4. The human factor H protein family - an update.Frontiers in immunology · 2024
    Review
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49 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Dan M GranoffCenter for Immunobiology and Vaccine Development, Children's Hospital Oakland Research Institute, Oakland, California 94609, USA. dgranoff@chori.org
Jo Anne Welsch
Sanjay Ram
University of Massachusetts Chan Medical School · US

Funding

Novel vaccine strategies for prevention of N. meningitidis group B diseaseR01AI046464 · NIAID · OMVAX, INC. · PI MOE, GREGORY ROBERT · 2000 to 2024
$12.1M
Complement Activation on Neisseria meningitidisR01AI054544 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI RAM, SANJAY · 2004 to 2014
$3.4M
CONSTRUCTION OF THE VACCINE CENTERC06RR016226 · NCRR · CHILDREN'S HOSPITAL &RES CTR AT OAKLAND · PI LUCAS, ALEXANDER H. · 2002 to 2002
$2.0M
NCI NIH HHS CO6 RR-16226NCRR NIH HHS C06 RR016226NIAID NIH HHS R01 AI046464NIAID NIH HHS R01 AI054544
6 · The paper itself

Abstract

Complement factor H (fH), a molecule that downregulates complement activation, binds to Neisseria meningitidis and increases resistance to serum bactericidal activity. We investigated the species specificity of fH binding and the effect of human fH on downregulating rat (relevant for animal models) and rabbit (relevant for vaccine evaluation) complement activation. Binding to N. meningitidis was specific for human fH (low for chimpanzee fH and not detected with fH from lower primates). The addition of human fH decreased rat and rabbit C3 deposition on the bacterial surface and decreased group C bactericidal titers measured with rabbit complement 10- to 60-fold in heat-inactivated sera from human vaccinees. Administration of human fH to infant rats challenged with group B strain H44/76 resulted in an fH dose-dependent increase in CFU/ml of bacteria in blood 8 h later (P < 0.02). At the highest fH dose, 50 microg/rat, the geometric mean number of CFU per ml was higher than that in control animals (1,050 versus 43 [P < 0.005]). The data underscore the importance of binding of human fH for survival of N. meningitidis in vitro and in vivo. The species specificity of binding of human fH adds another mechanism toward our understanding of why N. meningitidis is strictly a human pathogen.

Indexed as

AnimalsBacteremiaChild, PreschoolComplement ActivationComplement C3Complement Factor HHumansImmune SeraImmunoglobulin GMeningococcal InfectionsNeisseria meningitidisPan troglodytesProtein BindingRabbitsRatsSpecies SpecificityComplement C3Complement Factor HImmune SeraImmunoglobulin G

Identifiers

PMID19047406
PMCPMC2632036
OpenAlexW2152977933

What OpenQuestion holds

Textmetadata
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.