Evidence map›Paper›PMID 15616318›Full record

ArticleAntimicrobial agents and chemotherapy2005

Real-time in vivo bioluminescent imaging for evaluating the efficacy of antibiotics in a rat Staphylococcus aureus endocarditis model.

Yan Q Xiong, Julie Willard, Jagath L Kadurugamuwa, Jun Yu, Kevin P Francis, Arnold S Bayer

Abstract readEvaluation Study
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

61 citing papers in PubMed, 101 citations in OpenAlex.

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  12. Sanguiin H-6 Fractionated from Cloudberry (Antibiotics (Basel, Switzerland) · 2021
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  13. Development of a Murine Model of Pyogenic Flexor Tenosynovitis.The Journal of bone and joint surgery. American volume · 2021
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  14. Review
  15. Article
  16. Positron Emission Tomography Imaging ofACS infectious diseases · 2020
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  17. Article
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  19. Review
  20. Antimicrobial agents and chemotherapy · 2018
    Article

1 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

6 authors at 2 institutions in 1 country.

Yan Q XiongDivision of Infectious Diseases, St. John's Cardiovascular Research Center, Harbor-UCLA Research and Education Institute, 1124 W. Carson St., Torrance, CA 90502, USA. yxiong@ucla.edu
Julie Willard
Jagath L Kadurugamuwa
Jun Yu
Kevin P Francis
Arnold S Bayer
UCLA Medical Center · USUniversity of California, Los Angeles · US

Funding

Staphylococcal Adaptations to Platelet Microbicidal ProteinR01AI039108 · NIAID · LUNDQUIST INSTITUTE FOR BIOMEDICAL INNOVATION AT HARBOR-UCLA MEDICAL CENTER · PI BAYER, ARNOLD S · 1997 to 2016
$5.1M
NIAID NIH HHS AI-39108NIAID NIH HHS R01 AI039108
6 · The paper itself

Abstract

Therapeutic options for invasive Staphylococcus aureus infections have become limited due to rising antimicrobial resistance, making relevant animal model testing of new candidate agents more crucial than ever. In the present studies, a rat model of aortic infective endocarditis (IE) caused by a bioluminescently engineered, biofilm-positive S. aureus strain was used to evaluate real-time antibiotic efficacy directly. This strain was vancomycin and cefazolin susceptible but gentamicin resistant. Bioluminescence was detected and quantified daily in antibiotic-treated and control animals with IE, using a highly sensitive in vivo imaging system (IVIS). Persistent and increasing cardiac bioluminescent signals (BLS) were observed in untreated animals. Three days of vancomycin therapy caused significant reductions in both cardiac BLS (>10-fold versus control) and S. aureus densities in cardiac vegetations (P < 0.005 versus control). However, 3 days after discontinuation of vancomycin therapy, a greater than threefold increase in cardiac BLS was observed, indicating relapsing IE (which was confirmed by quantitative culture). Cefazolin resulted in modest decreases in cardiac BLS and bacterial densities. These microbiologic and cardiac BLS differences during therapy correlated with a longer time-above-MIC for vancomycin (>12 h) than for cefazolin ( approximately 4 h). Gentamicin caused neither a reduction in cardiac S. aureus densities nor a reduction in BLS. There were significant correlations between cardiac BLS and S. aureus densities in vegetations in all treatment groups. These data suggest that bioluminescent imaging provides a substantial advance in the real-time monitoring of the efficacy of therapy of invasive S. aureus infections in live animals.

Indexed as

Image Processing, Computer-AssistedLuminescent MeasurementsAnimalsAnti-Bacterial AgentsEndocarditis, BacterialFemaleHeartHumansMicrobial Sensitivity TestsRatsRats, Sprague-DawleyStaphylococcal InfectionsStaphylococcus aureusTreatment OutcomeAnti-Bacterial Agents

Identifiers

PMID15616318
PMCPMC538900
OpenAlexW2015317905

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.