Evidence map›Paper›PMID 19794959›Full record

ArticleNeoplasia (New York, N.Y.)2009

Using acetaminophen's toxicity mechanism to enhance cisplatin efficacy in hepatocarcinoma and hepatoblastoma cell lines.

Alexander J Neuwelt, Y Jeffrey Wu, Narcyz Knap, Marcin Losin, Edward A Neuwelt, Michael A Pagel, Steven Warmann, Joerg Fuchs, Piotr Czauderna, Michal Wozniak

Open access · goldAbstract read
In one paragraph

Article in Neoplasia (New York, N.Y.), 2009. 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
3.4field-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

16 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Hydroxyethyl disulfide as an efficient metabolic assay for cell viability in vitro.Toxicology in vitro : an international journal published in association with BIBRA · 2012
    Article
  13. Article
  14. The interconnectedness of cancer cell signaling.Neoplasia (New York, N.Y.) · 2011
    Article
  15. Article
  16. The War on Cancer rages on.Neoplasia (New York, N.Y.) · 2009
    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

10 authors at 3 institutions in 3 countries.

Alexander J NeuweltDepartment of Neurology, Oregon Health & Science University, Portland, OR 97239, USA.
Y Jeffrey Wu
Narcyz Knap
Marcin Losin
Edward A Neuwelt
Michael A Pagel
Steven Warmann
Joerg Fuchs
Piotr Czauderna
Michal Wozniak
Gdańsk Medical University · PLOregon Health & Science University · USUniversity Children's Hospital Tübingen · DE

Funding

Opening of the Blood Brain Barrier to Antitumor AgentsR37NS044687 · NINDS · OREGON HEALTH & SCIENCE UNIVERSITY · PI NEUWELT, EDWARD A. · 2002 to 2008
$3.5M
NINDS NIH HHS R37 NS044687NINDS NIH HHS R37-NS044687
6 · The paper itself

Abstract

BACKGROUND/

aimsAcetaminophen overdose causes hepatotoxicity mediated by toxic metabolites generated through the cytochrome P450 enzyme. The objective of this study was to investigate whether acetaminophen (AAP) can enhance cisplatin (CDDP) cytotoxicity against human hepatocarcinoma and hepatoblastoma cells in vitro and whether this effect can be prevented by N-acetylcysteine (NAC).

methodsIn vitro studies (glutathione [GSH] level, cell viability, and immunoblot assays) were performed using human hepatocarcinoma and hepatoblastoma cells cultured in AAP, CDDP, and the combination of both with or without delayed NAC administration. The pharmacology and toxicology of high-dose AAP in rats were also examined.

resultsAcetaminophen decreased GSH levels in liver cancer cells in a dose- and time-dependent manner. Acetaminophen combined with CDDP had enhanced cytotoxicity over CDDP alone. The cytotoxicity caused by AAP plus CDDP was decreased by NAC, with the effectiveness being time-dependent. The GSH level was lowered in the liver but not in the blood or the brain in rats treated with a high dose of AAP (1000 mg/kg). The expression of CYP2E1 protein, a key cytochrome P450 enzyme, varies among species but is not correlated to AAP sensitivity in liver cancer cells.

conclusionsOur results suggest that a chemotherapeutic regimen containing both AAP and CDDP with delayed NAC rescue has the potential to enhance chemotherapeutic efficacy while decreasing adverse effects. This would be a promising approach particularly for hepatoblastomas regardless of cellular CYP2E1 protein level but could also be beneficial in other malignancies.

Indexed as

AcetaminophenAcetylcysteineAnalgesics, Non-NarcoticAnimalsAntineoplastic AgentsBlotting, WesternCarcinoma, HepatocellularCell Line, TumorCell SurvivalCisplatinCytochrome P-450 CYP2E1Dose-Response Relationship, DrugDrug SynergismFree Radical ScavengersGlutathioneHepatoblastomaAcetaminophenAcetylcysteineAnalgesics, Non-NarcoticAntineoplastic AgentsCisplatinCytochrome P-450 CYP2E1Free Radical ScavengersGlutathione

Identifiers

PMID19794959
PMCPMC2745666
OpenAlexW1269276177

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.