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Tetrahydrocurcumin, a major metabolite of curcumin, ameliorates allergic airway inflammation by attenuating Th2 response and suppressing the IL-4Rα-Jak1-STAT6 and Jagged1/Jagged2 -Notch1/Notch2 pathways in asthmatic mice.
- Source :
-
Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology [Clin Exp Allergy] 2018 Nov; Vol. 48 (11), pp. 1494-1508. Date of Electronic Publication: 2018 Sep 12. - Publication Year :
- 2018
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Abstract
- Background: Curcumin (Cur), derived from Curcuma species, exhibits anti-inflammatory, antioxidant, and anticancer effects. Although Cur has some beneficial effects on asthma, its clinical application is limited by its low bioavailability. Tetrahydrocurcumin (THC), the major active metabolite of Cur, has multiple biological functions, similarly to Cur, and importantly, it showed enhanced bioavailability in tissues and plasma. However, the effect of THC on asthma has not been reported.<br />Objective: The current study sought to investigate the efficacy of dietary THC on allergic asthma compared to that of Cur in an animal model.<br />Methods: The anti-inflammatory effects of Cur and THC were evaluated in an ovalbumin-induced asthmatic mouse model. The nasal symptoms, pathological alterations of the lung tissues, oxidants and antioxidants, cytokine production, T cell subsets, and Th2-related signalling pathway activity were assessed.<br />Results: Both THC and Cur had beneficial effects on asthmatic mice with regard to nasal symptoms, pathological changes (eosinophils and mucus hyper-production), oxidative stress (malondialdehyde), cytokine production (IL-13), Th17 and cytotoxic T cell subsets, and Th2 signalling pathway (IL-4Rα-Jak1-STAT6 and Jagged1/Jagged2-Notch1/Notch2 axis) activity. THC was more effective than Cur in suppressing tissue eosinophilia, mucus production, and IL-4Rα/Jak1/STAT6 pathway activity. Furthermore, only THC inhibited peripheral eosinophil levels, Th2 cytokines (IL-4 and IL-5), and Th2 cell subsets and enhanced an antioxidant enzyme (glutathione).<br />Conclusion and Clinical Relevance: The above results demonstrated for the first time that THC was superior to Cur in modulating allergic asthmatic phenotypes, especially attenuating the Th2 response. THC might be a potentially effective agent for asthma treatment.<br /> (© 2018 John Wiley & Sons Ltd.)
- Subjects :
- Allergens immunology
Animals
Asthma drug therapy
Curcumin pharmacology
Cytokines metabolism
Disease Models, Animal
Female
Inflammation Mediators metabolism
Jagged-1 Protein metabolism
Jagged-2 Protein metabolism
Janus Kinase 1 metabolism
Leukocytes immunology
Leukocytes metabolism
Mice
Oxidative Stress
Receptor, Notch1 metabolism
Receptor, Notch2 metabolism
Receptors, Cell Surface metabolism
STAT6 Transcription Factor metabolism
Asthma immunology
Asthma metabolism
Biomarkers
Curcumin analogs & derivatives
Signal Transduction drug effects
Th2 Cells immunology
Th2 Cells metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1365-2222
- Volume :
- 48
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology
- Publication Type :
- Academic Journal
- Accession number :
- 30137697
- Full Text :
- https://doi.org/10.1111/cea.13258