Therapeutic effects study on the contents of dihydromyricetin in ampelopsis grossedentata from different places and their compatibility with fructus arctiine / 药学实践杂志

ABSTRACT

Objective To study the content differences of Dihydromyricetin in Ampelopsis grossedentata from different origins, parts and processing techniques, and improve the therapeutic effects by optimizing the compatibility of Ampelopsis grossedentata with Fructus arctiine. Methods The HPLC separation of Dihydromyricetin was performed on an Agilent ZORBAX SB-C18 column with methanol, 0.05 % phosphoric acid (30∶70) as the mobile phase. The flow rate was 1 ml/min, the detection wavelength was 291 nm, and the column temperature was 25 °C. Compatibility efficacy verification was performed with the inflammation model caused by cotton ball implantation in rats and ear swelling in mice. The net granulomatosis in the rats with cotton ball implantation and the swelling rate of mouse ears were recorded. Results Dihydromyricetin had a good liner recovery between 0.019 9-0.318 mg/ml (r=0.999). The extracted recovery was in the range of 95.04 %-100.4 %. The sample was stable within 24 h. This method had good repeatability. The combination of optimized high-dose Ampelopsis grossedentata with Fructus arctiine resulted in significantly lower net granuloma in rats and ear swelling rate in mice compared to the blank control group. Conclusion This method is simple and accurate. The content of dihydromyricetin varies greatly with different origins, parts, and processing techniques. Among them, the natural sun-dried vine tea in Jiangkou County, Guizhou Province has the highest content. The combination use of Ampelopsis grossedentata and Fructus Arctiine can significantly alleviate the pharyngeal symptoms, reduce the degree of inflammation, and achieve the therapeutic effect of clearing pharynx.