期刊
MOLECULES
卷 26, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/molecules26030695
关键词
Phyllantus amarus; antiallergic; beta-hexosaminidase; histamine; radioligand; molecular docking
资金
- Universiti Kebangsaan Malaysia [GUP-2018-138]
Phyllanthus amarus and its compound hypophyllanthin have shown potential antiallergic activity by inhibiting the activation of the H1 receptor, as revealed through the study's findings on mast cell degranulation and histamine binding assays.
Phyllanthus amarus Schum. & Thonn. (Phyllanthaceae) is a medicinal plant that is commonly used to treat diseases such as asthma, diabetes, and anemia. This study aimed to examine the antiallergic activity of P. amarus extract and its compounds. The antiallergic activity was determined by measuring the concentration of allergy markers release from rat basophilic leukemia (RBL-2H3) cells with ketotifen fumarate as the positive control. As a result, P. amarus did not stabilize mast cell degranulation but exhibited antihistamine activity. The antihistamine activity was evaluated by conducting a competition radioligand binding assay on the histamine 1 receptor (H1R). Four compounds were identified from the high performance liquid chromatography (HPLC) analysis which were phyllanthin (1), hypophyllanthin (2), niranthin (3), and corilagin (4). To gain insights into the binding interactions of the most active compound hypophyllanthin (2), molecular docking was conducted and found that hypophyllanthin (2) exhibited favorable binding in the H1R binding site. In conclusion, P. amarus and hypophyllanthin (2) could potentially exhibit antiallergic activity by preventing the activation of the H1 receptor.
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