Evidence map›Paper›PMID 15731054›Full record

ArticleInfection and immunity2005

Identification and characterization of an immunodominant 28-kilodalton Coxiella burnetii outer membrane protein specific to isolates associated with acute disease.

Guoquan Zhang, Ho To, Kasi E Russell, Laura R Hendrix, Tsuyoshi Yamaguchi, Hideto Fukushi, Katsuya Hirai, James E Samuel

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.3field-weighted citation impact, top 13% 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

22 citing papers in PubMed, 51 citations in OpenAlex.

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  8. Interaction ofFrontiers in cellular and infection microbiology · 2017
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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

8 authors at 2 institutions in 2 countries.

Guoquan ZhangDepartment of Medical Microbiology and Immunology, 407 Reynolds Medical Building, Texas A & M University System Health Science Center, College Station, TX 77843-1114, USA.
Ho To
Kasi E Russell
Laura R Hendrix
Tsuyoshi Yamaguchi
Hideto Fukushi
Katsuya Hirai
James E Samuel
Gifu University · JPTexas A&M University System · US

Funding

WRCE Nonhuman Primate CoreU54AI057156 · NIAID · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI WALKER, DAVID H · 2003 to 2013
$102.6M
Pathogenic Roles of Coxiella burnetti ProteinsR01AI037744 · NIAID · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI SAMUEL, JAMES EVANS · 2003 to 2007
$1.8M
PATHOGENIC ROLES OF COXIELLA BURNETTI SURFACE PROTEINSR21AI037744 · NIAID · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI SAMUEL, JAMES E · 2000 to 2000
$313k
PATHOGENIC ROLES OF COXIELLA BURNETII SURFACE PROTEINSR29AI037744 · NIAID · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI SAMUEL, JAMES E · 1995 to 1999
–
NIAID NIH HHS AI057156NIAID NIH HHS AI37744NIAID NIH HHS AI448191NIAID NIH HHS R01 AI037744NIAID NIH HHS R21 AI037744NIAID NIH HHS R29 AI037744NIAID NIH HHS U54 AI057156
6 · The paper itself

Abstract

Coxiella burnetii causes acute Q fever in humans and occasional chronic infections that typically manifest as endocarditis or hepatitis. Isolates associated with acute disease were found to be distinct from a group of chronic disease isolates by a variety of biochemical parameters and in a guinea pig fever model of acute disease, suggesting a difference in virulence potential. We compared antigenic polypeptides among C. burnetii isolates and found an immunodominant 28-kDa protein in acute group isolates but not in chronic group isolates (T. Ho, A. Hotta, G. Q. Zhang, S. V. Nguyen, M. Ogawa, T. Yamaguchi, H. Fukushi, and K. Hirai, Microbiol. Immunol. 42:81-85, 1998). In order to clone the adaA gene, the N-terminal amino acid sequence of adaA was determined and a 59-bp fragment was amplified from Nine Mile phase I DNA by PCR. The putative gene fragment was used to screen a lambda ZAP II genomic DNA library, and an open reading frame expressing a 28-kDa immunoreactive protein was identified. Sequence analysis predicted a gene encoding an approximately 28-kDa mature protein with a typical signal sequence. The adaA (acute disease antigen A) gene was detected in acute group C. burnetii isolates but not identified in chronic group isolates by PCR and Southern blotting. A typical signal peptide was predicted in adaA, and specific antibody to adaA reacted with the purified membrane fraction of acute group isolates by Western blotting, suggesting that adaA is exposed on the outer surface of C. burnetii. adaA was overexpressed in pET23a as a fusion protein in Escherichia coli to develop anti-recombinant adaA (anti-radaA) specific antibody, which recognized a approximately 28-kDa band in acute group isolates but not in chronic group isolates. In addition, immunoblotting indicates that radaA reacted with sera derived from animals infected with acute group isolates but did not react with sera from animals infected with chronic group isolates. These results support the idea that an adaA gene-targeted PCR assay and an radaA antigen-based serodiagnostic test may be useful for differential diagnosis of acute and chronic Q fever.

Indexed as

Antigens, BacterialBacterial Outer Membrane ProteinsBacterial ProteinsImmunodominant EpitopesAcute DiseaseAmino Acid SequenceAnimalsBase SequenceCloning, MolecularCoxiella burnetiiHumansImmunoblottingMiceMice, Inbred BALB CMolecular Sequence DataPolymerase Chain Reactionacute disease antigen A, Coxiella burnetiiAntigens, BacterialBacterial Outer Membrane ProteinsBacterial ProteinsImmunodominant Epitopes

Identifiers

PMID15731054
PMCPMC1064944
OpenAlexW2109753782

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.