Evidence map›Paper›PMID 19364864›Full record

ArticleAntimicrobial agents and chemotherapy2009

Prediction of the pharmacodynamically linked variable of oseltamivir carboxylate for influenza A virus using an in vitro hollow-fiber infection model system.

James J McSharry, Qingmei Weng, Ashley Brown, Robert Kulawy, George L Drusano

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

28 citing papers in PubMed, 44 citations in OpenAlex.

  1. Trial
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  3. DynamicAntibiotics (Basel, Switzerland) · 2024
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  14. Oseltamivir-zanamivir combination therapy suppresses drug-resistant H1N1 influenza A viruses in the hollow fiber infection model (HFIM) system.European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences · 2018
    Article
  15. Article
  16. Article
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  19. Oseltamivir for influenza in pregnancy.Seminars in perinatology · 2014
    Review
  20. Review
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

5 authors.

James J McSharryAntiviral Pharmacodynamics Laboratory, Center for Emerging Infections and Host Defense, Ordway Research Institute, 150 New Scotland Avenue, Albany, NY 12208, USA.
Qingmei Weng
Ashley Brown
Robert Kulawy
George L Drusano

Funding

Resistance Suppression for Influenza Virus With Combination ChemotherapyR01AI079729 · NIAID · UNIVERSITY OF FLORIDA · PI DRUSANO, GEORGE LOUIS · 2008 to 2011
$2.3M
NIAID NIH HHS R01 AI079729NIAID NIH HHS R01-AI079729-01
6 · The paper itself

Abstract

MDCK cells transfected with the human beta-galactoside alpha-2,6-sialyltransferase 1 gene (AX-4 cells) were used to determine the drug susceptibility and pharmacodynamically linked variable of oseltamivir for influenza virus. For dose-ranging studies, five hollow-fiber units were charged with 10(2) A/Sydney/5/97 (H3N2) influenza virus-infected AX-4 cells and 10(8) uninfected AX-4 cells. Each unit was treated continuously with different oseltamivir carboxylate concentrations in virus growth medium for 6 days. For dose fractionation studies, one hollow-fiber unit received no drug, one unit received a 1x 50% effective concentration (EC(50)) exposure to oseltamivir by continuous infusion, one unit received the same AUC(0-24) (area under the concentration-time curve from 0 to 24 h) by 1-h infusion every 24 h, one unit received the same total exposure in two equal fractions every 12 h, and one unit received the same total exposure in three equal fractions every 8 h. Each infusion dose was followed by a no-drug washout, producing the appropriate half-life for this drug. The effect of the drug on virus replication was determined by sampling the units daily, measuring the amount of released virus by plaque assay, and performing a hemagglutination assay. The drug concentration in the hollow-fiber infection model systems was determined at various times by liquid chromatography-tandem mass spectrometry. The dose-ranging study showed that the EC(50)s for oseltamivir carboxylate for the A/Sydney/5/97 strain of influenza virus was about 1.0 ng/ml. The dose fractionation study showed that all treatment arms suppressed virus replication to the same extent, indicating that the pharmacodynamically linked variable was the AUC(0-24)/EC(50) ratio. This implies that it may be possible to treat influenza virus infection once daily with a dose of 150 mg/day.

Indexed as

AnimalsAntiviral AgentsArea Under CurveCell LineDogsDose-Response Relationship, DrugInfluenza A Virus, H3N2 SubtypeMicrobial Sensitivity TestsModels, BiologicalOseltamivirAntiviral AgentsOseltamiviroseltamivir carboxylate

Identifiers

PMID19364864
PMCPMC2687202
OpenAlexW2121809348

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.