期刊
PLANTA MEDICA
卷 75, 期 2, 页码 132-136出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0028-1088379
关键词
Orthosiphon stamineus; Lamiaceae; adenosine A(1) receptor; methoxy flavonoid; diuretic; kidney stone
资金
- Dutch government via the Netherlands Education Support Office (NESO)
- Dutch Embassy in Indonesia
Orthosiphon stamineus Benth. (Orthosiphon grandiflorus Bold. or Clerodendranthus spicatus Thunb.) is an Indonesian medicinal herb traditionally used for diseases such as hypertension, diabetes, and kidney stones. Despite the importance of this last application, there are very few reports on it. Diuretic action is an important factor in kidney stone treatment, as an increase in the volume of fluid flowing through the kidney will help to dissolve the stones, assist their passing to avoid further retention, and flush out the deposits. Among the diverse roles of adenosine A, receptor antagonists in renal protection, many Studies have shown that they can induce diuresis and sodium excretion. A bioassay-guided fractionation of a methanol-water extract of Orthosiphon stamineus leaves using the adenosine A, receptor binding assay resulted in the isolation of seven methoxy flavonoids as active ligands with K-i values in the micromolar range. The Hill slope values are not significantly different from unity (within 0.9 - 1.4), which indicates the antagonist effect to A(1)-R. The results of this study thus provide a scientific foundation for the traditional use of Orthosiphon stamineus in kidney stone treatment, as the affinity of the active compounds isolated from it as adenosine A, receptor ligands allows them to be associated with diuretic activity, which is one possible treatment for renal lithiasis.
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