Evidence map›Paper›PMID 21199573›Full record

ArticleBMC complementary and alternative medicine2011

Ascorbic acid partly antagonizes resveratrol mediated heme oxygenase-1 but not paraoxonase-1 induction in cultured hepatocytes - role of the redox-regulated transcription factor Nrf2.

Anika E Wagner, Christine Boesch-Saadatmandi, Dorothea Breckwoldt, Charlotte Schrader, Constance Schmelzer, Frank Döring, Koji Hashida, Osamu Hori, Seiichi Matsugo, Gerald Rimbach

Open access · goldAbstract read
In one paragraph

Article in BMC complementary and alternative medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
12.9field-weighted citation impact, top 1% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 219 citations in OpenAlex.

  1. Pooled it
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  6. Expected and Unexpected Effects of Pharmacological Antioxidants.International journal of molecular sciences · 2023
    Review
  7. Natural Nrf2 Inhibitors: A Review of Their Potential for Cancer Treatment.International journal of biological sciences · 2023
    Review
  8. Review
  9. The Relationship between Cancer and Paraoxonase 1.Antioxidants (Basel, Switzerland) · 2022
    Review
  10. Perspectives on the Clinical Development of NRF2-Targeting Drugs.Handbook of experimental pharmacology · 2021
    Review
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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 2 institutions in 2 countries.

Anika E WagnerInstitute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Germany.
Christine Boesch-Saadatmandi
Dorothea Breckwoldt
Charlotte Schrader
Constance Schmelzer
Frank Döring
Koji Hashida
Osamu Hori
Seiichi Matsugo
Gerald Rimbach
Kiel University · DEKanazawa University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBoth resveratrol and vitamin C (ascorbic acid) are frequently used in complementary and alternative medicine. However, little is known about the underlying mechanisms for potential health benefits of resveratrol and its interactions with ascorbic acid.

methodsThe antioxidant enzymes heme oxygenase-1 and paraoxonase-1 were analysed for their mRNA and protein levels in HUH7 liver cells treated with 10 and 25 μmol/l resveratrol in the absence and presence of 100 and 1000 μmol/l ascorbic acid. Additionally the transactivation of the transcription factor Nrf2 and paraoxonase-1 were determined by reporter gene assays.

resultsHere, we demonstrate that resveratrol induces the antioxidant enzymes heme oxygenase-1 and paraoxonase-1 in cultured hepatocytes. Heme oxygenase-1 induction by resveratrol was accompanied by an increase in Nrf2 transactivation. Resveratrol mediated Nrf2 transactivation as well as heme oxygenase-1 induction were partly antagonized by 1000 μmol/l ascorbic acid.

conclusionsUnlike heme oxygenase-1 (which is highly regulated by Nrf2) paraoxonase-1 (which exhibits fewer ARE/Nrf2 binding sites in its promoter) induction by resveratrol was not counteracted by ascorbic acid. Addition of resveratrol to the cell culture medium produced relatively low levels of hydrogen peroxide which may be a positive hormetic redox-signal for Nrf2 dependent gene expression thereby driving heme oxygenase-1 induction. However, high concentrations of ascorbic acid manifold increased hydrogen peroxide production in the cell culture medium which may be a stress signal thereby disrupting the Nrf2 signalling pathway.

Indexed as

AntioxidantsAryldialkylphosphataseAscorbic AcidCarcinoma, HepatocellularCell Line, TumorDrug InteractionsGene Expression Regulation, EnzymologicHeme Oxygenase-1HepatocytesHumansHydrogen PeroxideNF-E2-Related Factor 2Plant ExtractsResveratrolRNA, MessengerStilbenesAntioxidantsAryldialkylphosphataseAscorbic AcidHeme Oxygenase-1Hydrogen PeroxideNF-E2-Related Factor 2Plant ExtractsResveratrolRNA, MessengerStilbenes

Identifiers

PMID21199573
PMCPMC3020228
OpenAlexW2047435448

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.