Evidence map›Paper›PMID 16192289›Full record

ArticleAnnals of the rheumatic diseases2006

Synovial Chlamydia trachomatis up regulates expression of a panel of genes similar to that transcribed by Mycobacterium tuberculosis during persistent infection.

H C Gérard, J A Whittum-Hudson, H R Schumacher, A P Hudson

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in Annals of the rheumatic diseases, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Review
  3. The molecular basis for disease phenotype in chronic Chlamydia-induced arthritis.International journal of clinical rheumatology · 2012
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Persistent infection of Chlamydia in reactive arthritis.Annals of the rheumatic diseases · 2006
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

H C GérardDepartment of Immunology and Microbiology, Wayne State University School of Medicine, Gordon H Scott Hall, 540 East Canfield Avenue, Detroit, MI 48201, USA.
J A Whittum-Hudson
H R Schumacher
A P Hudson
Wayne State University · USVeterans Health Administration · US

Funding

REITERS SYNDROME--MECHANISM OF CHLAMYDIA PATHOGENESISR01AR042541 · NIAMS · WAYNE STATE UNIVERSITY · PI HUDSON, ALAN PAUL · 1993 to 2008
$2.6M
ANTICHLAMYDIAL PROTECTION BY MOLECULAR MIMCRYR01AI044493 · NIAID · WAYNE STATE UNIVERSITY · PI WHITTUM-HUDSON, JUDITH A · 1998 to 2002
$781k
ROLE OF APOE IN THE PATHOGENESIS OF CHLAMYDIA PNEUMONIAER03AR047186 · NIAMS · WAYNE STATE UNIVERSITY · PI GERARD, HERVE C · 2000 to 2002
$217k
NIAID NIH HHS AI-44493NIAMS NIH HHS AR-42541NIAMS NIH HHS AR-47186
6 · The paper itself

Abstract

backgroundSynovial tissues in patients with Chlamydia associated arthritis are persistently infected by C trachomatis, an organism for which genetic manipulation is not possible. M tuberculosis also engages in persistent infection, and because this bacterium is genetically tractable many groups have been able to define transcriptional characteristics of mycobacterial growth and persistence.

objectiveTo investigate whether the pattern of gene expression underlying chlamydial persistence is similar to that underlying mycobacterial persistence.

methods194 genes in M tuberculosis that are transcriptionally up regulated to support in vivo growth and persistence of that organism have previously been identified. Each of those genes was compared with the C trachomatis genome to identify orthologues. Expression of selected chlamydial orthologues so identified was assessed by real time RT-PCR in an in vitro model of chlamydial persistence and synovial tissues from patients who were PCR positive for C trachomatis at that site.

results67 C trachomatis genes were identified as being orthologous to mycobacterial persistence related genes, representing 35% of the genes tested. The chlamydial orthologues fell into similar metabolic and other categories as those in M tuberculosis. Expression of a majority of selected chlamydial orthologues was strongly up regulated in an in vitro model of chlamydial persistence and in synovial tissues of relevant patients, compared with their expression during active infection.

conclusionsThese observations provide new insight into the molecular genetic basis underlying chlamydial persistence, and indicate that this information can be obtained, in some instances, by extrapolating observations made in other biological systems and/or organisms.

Indexed as

Genes, BacterialArthritis, ReactiveCell Line, TumorChlamydia InfectionsChlamydia trachomatisChronic DiseaseGene Expression Regulation, BacterialHumansMycobacterium tuberculosisReverse Transcriptase Polymerase Chain ReactionSpecies SpecificitySynovial MembraneUp-Regulation

Identifiers

PMID16192289
PMCPMC1798071
OpenAlexW2117900404

What OpenQuestion holds

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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.