Abstract Title:

The Protective Role of Garlic on Allergen-Induced Airway Inflammation in Mice.

Abstract Source:

Am J Chin Med. 2019 ;47(5):1099-1112. Epub 2019 Jul 31. PMID: 31366207

Abstract Author(s):

Chia-Chen Hsieh, Wen-Huang Peng, Hsien-Hao Tseng, Shan-Yuan Liang, Li-Jen Chen, Jen-Chieh Tsai

Article Affiliation:

Chia-Chen Hsieh


Asthma is the most prevalent chronic respiratory disease worldwide. Garlic extracts have long been used as a food source and in traditional medicine. Crude extracts of garlic are used as an anti-inflammatory agent and have been reported to exhibit antiasthmatic properties. However, molecular mechanisms of garlic extracts in the context of antiasthmatic airway inflammation are still unclear. In this study, the antiasthmatic effect of garlic extracts on Th1, Th2, and Th3 cytokine profiles and immunoregulatory mechanism were explored using an animal model of allergic asthma. Garlic extracts significantly reduced total inflammatory cell counts and eosinophil infiltration and decreased the production ofIgE in serum and Th1/Th2/Th3 cytokine in bronchoalveolar fluid. Enzyme-linked immunosorbent assay analysis demonstrated that garlic extracts downregulated the levels of cytokines and chemokines, namely Th2-related IL-4, IL-5, and IL-13; but they simultaneously upregulated Th1-related IFN-, IL-12, and Th3-related IL-10 and TGF-expression in BALF. The mechanism may be ascribed to the modulation of Th1-, Th2-, and Th3-related cytokine imbalance.

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