Evidence map›Paper›PMID 18551180›Full record

ArticleInfectious diseases in obstetrics and gynecology2008

The metabolism and transplacental transfer of oseltamivir in the ex vivo human model.

Kevin C Worley, Scott W Roberts, Roger E Bawdon

Open access · hybridAbstract read
In one paragraph

Article in Infectious diseases in obstetrics and gynecology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.4field-weighted citation impact, top 6% 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

16 citing papers in PubMed, 43 citations in OpenAlex.

  1. Review
  2. Article
  3. Observational
  4. Oseltamivir for influenza in pregnancy.Seminars in perinatology · 2014
    Review
  5. Review
  6. Influenza in pregnancy.Influenza and other respiratory viruses · 2013
    Review
  7. Review
  8. Transplacental transfer of oseltamivir carboxylate.The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2012
    Article
  9. Article
  10. Review
  11. Pharmacokinetics of oseltamivir according to trimester of pregnancy.American journal of obstetrics and gynecology · 2011
    Article
  12. Review
  13. Review
  14. Article
  15. Safety of neuraminidase inhibitors against novel influenza A (H1N1) in pregnant and breastfeeding women.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2009
    Review
  16. Article
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.

Kevin C WorleyDepartment of Obstetrics and Gynecology, University of Texas Southwestern Medical Center Dallas, TX 75390-9032, USA. kevin.worley@mac.com
Scott W Roberts
Roger E Bawdon
The University of Texas Southwestern Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledOseltamivir phosphate is extensively metabolized in the ex vivo human placenta model, and the transplacental passage of the metabolite oseltamivir carboxylate is incomplete.

objectiveTo evaluate the metabolism and transplacental transfer of oseltamivir (Tamiflu) in the ex vivo human placental model. STUDY

designPerfusion studies were performed in six placentas from term, uncomplicated deliveries. Concentrations of oseltamivir phosphate (OP) that were 5-6 fold, 20-30 fold, and 600-800 fold above the therapeutic peak were tested, as neither OP nor its active metabolite, oseltamivir carboxylate (OC), could be detected at near-therapeutic concentrations. The transplacental transfer and accumulation of OC were assessed using the (14)C antipyrine reference method.

resultsOP was extensively metabolized to OC. In the 4 placentas with the highest concentration of OP, OC had a mean clearance index of 0.13 +/- 0.08, suggesting that transplacental passage occurs at a relatively low rate. Measurable fetal accumulation occurred in the two placentas with the highest initial concentrations.

conclusionsOseltamivir phosphate was extensively metabolized in the ex vivo model. Transplacental transfer of the metabolite was incomplete and accumulation was minimal.

Indexed as

AntipyrineAntiviral AgentsFemaleFetusHumansMaternal-Fetal ExchangeModels, BiologicalOseltamivirPerfusionPlacentaPregnancyAntipyrineAntiviral AgentsOseltamivir

Identifiers

PMID18551180
PMCPMC2413047
OpenAlexW2055386800

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.