Evidence map›Paper›PMID 25811024›Full record

ArticleBioMed research international2015

Direct effects of (-)-epicatechin and procyanidin B2 on the respiration of rat heart mitochondria.

Dalia M Kopustinskiene, Arunas Savickas, David Vetchý, Ruta Masteikova, Arturas Kasauskas, Jurga Bernatoniene

Open access · hybridAbstract read
In one paragraph

Article in BioMed research international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
5.7field-weighted citation impact, top 5% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Response of VOPhysiological reports · 2025
    Pooled it
  2. Cocoa-flavanols enhance moderate-intensity pulmonaryEuropean journal of applied physiology · 2021
    Trial
  3. Article
  4. Review
  5. Review
  6. Catechins and Proanthocyanidins Involvement in Metabolic Syndrome.International journal of molecular sciences · 2023
    Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Achacha (Nutrients · 2018
    Article
  20. 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

6 authors at 2 institutions in 2 countries.

Dalia M KopustinskieneDepartment of Pharmaceutical Technology and Social Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Eiveniu 4, LT-50161 Kaunas, Lithuania.
Arunas SavickasDepartment of Pharmaceutical Technology and Social Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Eiveniu 4, LT-50161 Kaunas, Lithuania.
David VetchýDepartment of Pharmaceutics, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, 612 42 Brno, Czech Republic.
Ruta MasteikovaDepartment of Pharmaceutics, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1/3, 612 42 Brno, Czech Republic.
Arturas KasauskasDepartment of Biochemistry, Medical Academy, Lithuanian University of Health Sciences, Kaunas, A. Mickeviciaus 9, LT-44307 Kaunas, Lithuania.
Jurga BernatonieneDepartment of Pharmaceutical Technology and Social Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Eiveniu 4, LT-50161 Kaunas, Lithuania.
Lithuanian University of Health Sciences · LTUniversity of Veterinary Sciences Brno · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Flavonol (-)-epicatechin and its derived dimer procyanidin B2, present in high amounts in cocoa products, have been shown to exert beneficial effects on the heart and cardiovascular system; however, their mechanism of action has not been fully elucidated. We studied effects of (-)-epicatechin and procyanidin B2 on the oxidative phosphorylation of isolated rat heart mitochondria. (-)-Epicatechin and procyanidin B2 had stimulating effect (up to 30% compared to control) on substrate-driven (State 2) mitochondrial respiration. Their effect was dependent on the respiratory substrates used. (-)-Epicatechin at higher concentrations (from 0.27 µg/mL) significantly decreased (up to 15%) substrate- and ADP-driven (State 3) mitochondrial respiration in case of pyruvate and malate oxidation only. Procyanidin B2 (0.7-17.9 ng/mL) inhibited State 3 respiration rate up to 19%, the most profound effect being expressed with succinate as the substrate. (-)-Epicatechin at concentrations of 0.23 µg/mL and 0.46 µg/mL prevented loss of the cytochrome c from mitochondria when substrate was succinate, supporting the evidence of membrane stabilizing properties of this flavonol. Thus, both (-)-epicatechin and procyanidin B2 directly influenced mitochondrial functions and the observed effects could help to explain cardiometabolic risk reduction ascribed to the consumption of modest amounts of cocoa products.

Indexed as

Adenosine DiphosphateAnimalsBiflavonoidsCatechinCell RespirationCytochromes cMitochondria, HeartOxidation-ReductionProanthocyanidinsRatsSubstrate SpecificitySuccinatesAdenosine DiphosphateBiflavonoidsCatechinCytochromes cProanthocyanidinsprocyanidin B2Succinates

Identifiers

PMID25811024
PMCPMC4354975
OpenAlexW2017584670

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.