Résumé
This study was aimed to investigate rules of medicine selections of four Meng-He (MH) medical schools. Based on frequency analysis and Apriori algorithm of association rules, data mining was conducted on 60 cases of four MH medical schools in the treatment of Chuan syndrome. The results showed that among 60 cases, Xing-Ren (XR), Ban-Xia (BX), Fu-Ling (FL), Hua-Ju-Hong (HJH), Su-Zi (SZ) and Bu-Gu-Zhi (BGZ) were the most com-monly used single medicine. The most commonly used medicine groups were SZ-HJH-FL, XR-Y i-Y i-Ren (YYR), XR-HJH, XR-SZ and so on. It was concluded that four MH medical schools in the treatment of Chuan syndrome mainly used antitussive and antiasthmatic Chinese medicines such as YR, BX, SZ, and complemented with BGZ for deficiency-nourishing, FL for dampness-removing, HJH for qi-regulating. It provided references for the clinical practice and treatment of Chuan syndrome.
Résumé
This study was aimed to establish a method for assay of 4-terpineol, α-terpineol, bornyl acetate and methyl-n-nonylketone in Houttuynia cordata with gas chromatography-mass spectrometry (GS/MS) for the first time in order to provide experimental evidences for its quality control. Undecylen was analyzed quantitatively. GC/MS method was used in the content determination of 4 kinds of components in Houttuynia cordata. GC conditions were that the temperature was firstly increased to 70oC for 5 min, and then 5oC·min-1 to 140oC for 5 min. Then, the temperature was increased by 10oC·min-1 to 250oC for 10 min. The temperature of the injection port was 230oC. The carrier gas was high purity helium. The flow rate was 1.0 mL·min-1. The split ratio was 10:1. The sample quantity was 1 μl. MS conditions were that the detector was MS, EI was 70ev, the temperature of four poles was 150oC, the temperature of ion source was 230oC. The results showed that there was good linearity of four components, which were 4-terpineol, α-terpineol, bornyl acetate and methyl-n-nonylketone obtained within the ranges of 6.492~129.84μg·min-1, 1.097~21.944 μg·min-1, 12.128~242.56 μg·min-1, and 84.76~169.52 μg·min-1, respectively. The average recoveries of the four components were 81.2%, 80.6%, 88.3%, and 84.6%, respectively. The RSDs were 1.5%, 2.3%, 1.1%, and 0.7%, respectively. It was concluded that the method was simple, sensitive, and easy to operate. The simultaneous measurement of multiple indexes on the component for quality evaluation of Houttuynia cordata can effectively reflect the quality of Houttuynia cordata. It can also be used in the quality assessment of fresh Houttuynia c ordate .