Cited by 49Essential Oils and Antimicrobial ActivityMedicinal Plant ResearchInflammatory Bowel Disease

Anti-inflammatory effects of thyme essential oil in mice

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Juhas, Š., Bujňáková, D., Rehák, P., Čikoš, Š., Czikková, S., Veselá, J., Iłková, G., Koppel, J.·2008·Acta Veterinaria Brno

Abstract

Plant essential oils are plant secondary metabolites possessing various pharmacological properties, primarily anti-oxidative, antimicrobial or immunomodulatory ones. The aim of this work was to study the effects of thyme essential oil dietary administration in murine DTH/ CHS reaction, carrageenan paw oedema and TNBS colitis. Thyme essential oil was added to the murine diet at three concentrations (5000, 2500 and 1250 ppm) and fed to Balb/c mice. The extent of ear swelling in DTH/CHS reaction and paw oedema induced by carrageenan application was measured using the Mitutoyo thickness gauge. In the model of TNBS colitis we evaluated the changes in body weight, the colon weight : body weight ratio, bacterial translocation to mesenteric lymph nodes, and macroscopical and histological scores. IL-1β and IL-6 messenger RNA expression in colonic samples of one experimental group were assessed using quantitative real-time reverse transcriptase PCR. Dietary supplementation with 5000 ppm of thyme essential oil significantly decreased paw oedema and ear swelling. This thyme essential oil concentration caused a significant inhibition of total mRNA IL-1β expression in the mouse colon, and markedly decreased the macroscopic and microscopic scores of colitis. On the other hand, the 1250 ppm of thyme essential oil in diet increased ear oedema induced by oxazolone application in mice. Our study indicates that thyme essential oil is able to affect murine experimental inflammatory models depending on the concentration used. It is concluded that the anti-inflammatory effects of thyme essential oil should be interpreted with a caution due to its contradictory, dose-related effects.

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Crossref · 10.2754/avb200877030327

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  • Carrageenan-induced mouse paw oedema is frequently used to determine anti-inflammatory activity of plant extracts and essential oils.

    “Carrageenan-induced mouse paw oedema is frequently used to determine the anti-inflammatory activity of diverse bioactive compounds such as plant extracts and essential oils [87,88,89,90,91,92,93,94,95].”
  • Thyme essential oil only at high concentrations (5,000 mg/L) significantly inhibits total mRNA IL-1β expression in mouse colon with TNBS-induced colitis, without significantly inhibiting IL-6 expression.

    “Thyme essential oil, mainly constituted by p-cymene and thymol, only at high concentrations (5,000 mg/L) significantly inhibited total mRNA IL-1β expression in the mouse colon in which colitis was induced by TNBS, not inhibiting significantly IL-6 expression [125].”

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Authors
Juhas, Š., Bujňáková, D., Rehák, P., Čikoš, Š., Czikková, S., Veselá, J., Iłková, G., & Koppel, J.
Affiliations
  • Slovak Academy of Sciences (SK)
  • University of Pavol Jozef Šafárik (SK)
Venue
Acta Veterinaria Brno
Published
2008
Volume
77
Issue
3
Pages
327-334
ISSN
  • 0001-7213 (ISSN-L)
  • 1801-7576
OpenAlex
W2168635116
Cited by
48
References
37
Citations by year
2025: 1 · 2024: 4 · 2023: 4 · 2022: 6 · 2021: 7 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 3 · 2016: 2 · 2015: 1 · 2014: 2 · 2013: 1 · 2012: 1
FWCI
3.21
Type
journal article
Language
en
Open access
Locations
Acta Veterinaria Brno (publishedVersion, cc-by)
Funders
Agentúra na Podporu Výskumu a Vývoja (APVT-51-015404)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Medicinal Plant Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
Keywords
thyme essential oil, anti-inflammatory activity, dietary supplementation, carrageenan-induced paw edema, TNBS-induced colitis, bacterial translocation, IL-1β, interleukin-6, dose-dependent effects, colitis

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