Evidence map›Paper›PMID 32548889›Full record

ArticleBritish journal of pharmacology2020

The coffee ingredients caffeic acid and caffeic acid phenylethyl ester protect against irinotecan-induced leukopenia and oxidative stress response.

Sandra Kalthoff, Stefan Paulusch, Alexander Rupp, Stefan Holdenrieder, Gunther Hartmann, Christian P Strassburg

Open access · hybridAbstract read
In one paragraph

Article in British journal of pharmacology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 29% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Pooled it
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  3. Article
  4. A CommonOxidative medicine and cellular longevity · 2025
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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

6 authors at 2 institutions in 1 country.

Sandra KalthoffDepartment of Internal Medicine I, University Hospital Bonn, Bonn, Germany.
Stefan PauluschDepartment of Internal Medicine I, University Hospital Bonn, Bonn, Germany.
Alexander RuppInstitute of Laboratory Medicine, German Heart Center of the Technical University Munich, Munich, Germany.ORCID 0000-0002-2131-4581
Stefan HoldenriederInstitute of Laboratory Medicine, German Heart Center of the Technical University Munich, Munich, Germany.
Gunther HartmannInstitute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany.
Christian P StrassburgDepartment of Internal Medicine I, University Hospital Bonn, Bonn, Germany.
University Hospital Bonn · DEDeutsches Herzzentrum München · DE

Funding

Deutsche Forschungsgemeinschaft STR493/9-1
6 · The paper itself

Abstract

background and purposeIrinotecan, used in colorectal cancer therapy, is metabolized by glucuronidation involving different UDP-glucuronosyltransferase (UGT)1A isoforms leading to facilitated elimination from the body. Individuals homozygous for the genetic variants UGT1A1*28 (Gilbert syndrome) and UGT1A7*3 are more susceptible to irinotecan side effects, severe diarrhoea and leukopenia. The aim of this study was to investigate the protective effects and active constituents of coffee during irinotecan therapy using humanized transgenic (htg)UGT1A-WT and htgUGT1A-SNP (carry UGT1A1*28 and UGT1A7*3 polymorphisms) mice. EXPERIMENTAL APPROACH: HtgUGT1A mice were pretreated with coffee or caffeic acid (CA) + caffeic acid phenylethyl ester (CAPE) and injected with irinotecan. The effects of coffee and CA + CAPE were investigated using reporter gene assays, immunoblot, TaqMan-PCR, siRNA analyses and blood counts. KEY

resultsOnly the combination of the two coffee ingredients, CA and CAPE, mediates protective effects of coffee in a model of irinotecan toxicity by activation of UGT1A genes. Coffee and CA + CAPE significantly increased UGT1A expression and activity along with SN-38 glucuronide excretion in irinotecan-injected htgUGT1A mice, resulting in significant improvement of leukopenia, intestinal oxidative stress and inflammation. CONCLUSION AND IMPLICATIONS: In this study, we identify the compounds responsible for mediating the previously reported coffee-induced activation of UGT1A gene expression. CA and CAPE represent key factors for the protective properties of coffee which are capable of reducing irinotecan toxicity, exerting antioxidant and protective effects. Provided that CA + CAPE do not affect irinotecan efficacy, they might represent a novel strategy for the treatment of irinotecan toxicity.

Indexed as

Caffeic AcidsCoffeeIrinotecanLeukopeniaOxidative StressAnimalsCamptothecinEstersGlucuronosyltransferaseMicecaffeic acidCaffeic AcidsCamptothecinCoffeeEstersGlucuronosyltransferaseIrinotecan

Identifiers

PMID32548889
PMCPMC7443465
OpenAlexW3034248637

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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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.