Ethnopharmacological Investigation and Rapid Authentication of Mongolian Patent Medicines Digeda

Objective To investigate Mongolian medicinal plants called Digeda and the prescriptions in Inner Mongolia region and to establish a molecular method for authentication of Digeda Mongolian patent medicines （MPMs）. Methods A field investigation was conducted on traditional uses of Digeda. After interviewed traditional healers in Mongolian, ethnopharmacological information of Digeda prescriptions was recorded in detail, including names, compositions, and traditional uses. And the total DNA from 10 MPMs has been amplified by three pairs of specific primers. Specific PCR products were further identified by sequence alignment with the known sequences already submitted in GenBank or own sequences. Results Fifteen Digeda plants and 29 Digeda prescriptions with their ethnopharmacological knowledge were collected. Ten MPM samples containing Lomatogonium rotatum, Viola philippica, and Corydalis bungeana were successfully evidenced by PCR with specific bands as raw materials. Conclusion Digeda should be further investigated in ethnopharmacology, which is a fundamental step toward developing efficacious natural drugs for various diseases. PCR amplification of specific allele is an easy and economical method, which can be used to identify highly processed MPMs and will assist in monitoring their qualities and legalities.

蒙成药中“地格达”类原料药材的位点特异性PCR鉴别研究

该文选择8种含有地格达类蒙药原料药材的蒙成药为对象,首先对基原植物肋柱花和苦地丁样品采用改良CTAB法提取其总DNA,使用psb A-trn H片段进行扩增、测序,与Gen Bank下载的8种蒙成药中其他原料药材psb A-trn H序列进行同源比对后根据其变异位点设计特异性鉴别引物。同时对8种蒙成药进行总DNA的提取,并使用DNA纯化试剂盒进行纯化,通过PCR反应对叶绿体rbc L序列进行扩增,再分别选择肋柱花和苦地丁鉴别引物进行扩增,并将扩增后的产物进行测序。所得序列校正、比对后,进行比对分析。结果表明,地格达-4汤、地格达-8散、地格达-4散中均含有原料药材肋柱花,苦地丁特异鉴别引物扩增分析可以鉴定出利胆八味散、伊赫哈日-12和阿嘎日-35中含有苦地丁。该研究结果说明,位点特异PCR方法用于鉴定蒙成药中原料药材具有一定的可行性。