Evidence map›Paper›PMID 29792194›Full record

ArticleBMC complementary and alternative medicine2018

Comparison of aqueous, polyethylene glycol-aqueous and ethanolic propolis extracts: antioxidant and mitochondria modulating properties.

Loreta Kubiliene, Aiste Jekabsone, Modestas Zilius, Sonata Trumbeckaite, Daiva Simanaviciute, Rima Gerbutaviciene, Daiva Majiene

Open access · goldAbstract read
In one paragraph

Article in BMC complementary and alternative medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.1field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 65 citations in OpenAlex.

  1. Trial
  2. Article
  3. Pathogens (Basel, Switzerland) · 2025
    Article
  4. Article
  5. Review
  6. The Effectiveness of Aqueous Propolis Extract in Reducing theInternational journal of dentistry · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Review
  14. Propolis Efficacy: The Quest for Eco-Friendly Solvents.Molecules (Basel, Switzerland) · 2022
    Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. 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

7 authors at 1 institution in 1 country.

Loreta KubilieneDepartment of Drug technology and Social Pharmacy, Lithuanian university of Health Sciences, Sukileliu st. 13, LT-50166, Kaunas, Lithuania.
Aiste JekabsoneLaboratory of Molecular Neurobiology, Neuroscience Institute, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50009, Kaunas, Lithuania.
Modestas ZiliusDepartment of Clinical Pharmacy, Lithuanian university of Health Sciences, Sukileliu st. 13, LT-50166, Kaunas, Lithuania.
Sonata TrumbeckaiteLaboratory of Biochemistry, Neuroscience Institute, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50009, Kaunas, Lithuania.
Daiva SimanaviciuteClinical Department, Lithuanian university of Health Sciences, Eiveniu st. 2, LT-50166, Kaunas, Lithuania.
Rima GerbutavicieneDepartment of Drug technology and Social Pharmacy, Lithuanian university of Health Sciences, Sukileliu st. 13, LT-50166, Kaunas, Lithuania.
Daiva MajieneDepartment of Drug technology and Social Pharmacy, Lithuanian university of Health Sciences, Sukileliu st. 13, LT-50166, Kaunas, Lithuania. daiva.majiene@lsmuni.lt.ORCID http://orcid.org/0000-0003-3956-5298
Lithuanian University of Health Sciences · LT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPropolis is multicomponent substance collected by honeybees from various plants. It is known for numerous biological effects and is commonly used as ethanolic extract because most of active substances of propolis are ethanol-soluble. However, water-based propolis extracts could be applied more safely, as this solvent is more biocompatible. On the other hand, water extracts has significantly smaller range and quantity of active compounds. The extraction power of water could be enhanced by adding co-solvent which increases both solubility and penetration of propolis compounds. However, variation of solvents results in different composition of active substances that might have distinct effects. The majority of biological effects of propolis are attributed to the antioxidant properties of its active compounds. Antioxidant effect might be a result of either direct scavenging of ROS or modulation of ROS producing organelle activity. Therefore, the aim of this study was to investigate and compare chemical composition, antioxidant properties and effects on mitochondrial respiration of aqueous (AqEP), polyethylene glycol-aqueous (Pg-AqEP) and ethanolic (EEP) propolis extracts.

methodsChemical composition of propolis extracts was determined using HPLC and Folin-Ciocalteu method. Ability to neutralize H

resultsOur data revealed that phenolic acids and aldehydes make up 40-42% of all extracted and identified compounds in AqEP and Pg-AqEP and only 16% in EEP. All preparations revealed similar antioxidant activity in cell culture medium but Pg-AqEP and EEP demonstrated better mitochondrial superoxide and total intracellular ROS decreasing properties. At higher concentrations, AqEP and EEP inhibited mitochondrial respiration, but Pg-AqEP had concentration-dependent mitochondria-uncoupling effect.

conclusionsAqueous and non-aqueous propolis extracts differ by composition, but all of them possess antioxidant properties and neutralize H

Indexed as

AnimalsAntioxidantsBeesCell Line, TumorEthanolHydrogen PeroxideMitochondriaPolyethylene GlycolsPropolisRatsAntioxidantsEthanolHydrogen PeroxidePolyethylene GlycolsPropolisC6 glioma cell cultureEthanolExtract of propolisMitochondrial respirationPolyethylene glycolPolyphenolsRadical scavenging activitySuperoxideWater

Identifiers

PMID29792194
PMCPMC5966891
OpenAlexW2806800464

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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.