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Li C, Li F, Ye H, Xie X, Liang Y, Tian E, Chao Z. Molecular quantification, a new strategy for quality control of Chinese patent medicine containing animal-derived crude drug: Qi She in Jinlong capsule as an example. J Pharm Biomed Anal 2022; 207:114428. [PMID: 34710727 DOI: 10.1016/j.jpba.2021.114428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 10/10/2021] [Accepted: 10/12/2021] [Indexed: 12/16/2022]
Abstract
Quality control for Chinese patent medicine (CPM) containing animal-derived crude drug(s) is rather difficult. The methods based on chemical composition analysis, which are commonly used in CPM consisted of plant-derived crude drugs, are often not applicable for CPM containing animal-derived crude drug, because the effective constituents of most animal-derived crude drugs remain unknown. Even if there are such methods, they are usually qualitative rather than quantitative, and the specificity is generally poor. Here we proposed a molecular quantification method for CPM containing animal-derived crude drug, based upon the hypothesis that the amount of remnant DNA fragments could reflect feeding quantity of the crude drugs and thus ensure the quality of the CPM. Take Jinlong capsule [a hepatocellular carcinoma-resisting Chinese patent medicine comprising of three fresh animal drugs, i.e. Shougong (Peking gecko, Gekko swinhonis), Qi She (sharp-snouted pitviper, Deinagkistrodon acutus), and Jinqian Baihua She (many-banded krait, Bungarus multicinctus)] as an example, we established a qPCR assay for Qi She in the capsule, which verified the feasibility of the quality control method based on molecular quantification. Species-specific primers and TaqMan probe for Qi She were designed, and the qPCR assay system was then established. The assay exhibited a good specificity; there's a good linearity between Ct values and logarithm of the target amplicon copy numbers within the range of 8.8 × 101 to 8.8 × 106 copies/μL, and the limit of detection was 88 copies/μL. The method was validated through reproducibility, stability assessment. Recovery of spiked samples was between 91.59% and 101.69%. It was verified that the copy numbers reflected the original feeding amount of an animal-derived crude drug by self-made Jinlong capsules. The assay was successfully applied in Qi She-specific amplicon determination in 20 batches of Jinlong capsule. The study was expected to provide a new strategy for quality control of CPM containing animal-derived crude drug.
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Affiliation(s)
- Chan Li
- Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Faculty of Medicinal Plants and Pharmacognosy, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Fang Li
- Faculty of Medicinal Plants and Pharmacognosy, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Haoting Ye
- Faculty of Medicinal Plants and Pharmacognosy, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China; Department of Pharmacy, Guangdong Second Provincial General Hospital, Guangdong Provincial Emergency Hospital, Guangzhou, China
| | - Xuena Xie
- Faculty of Medicinal Plants and Pharmacognosy, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Yongshan Liang
- Faculty of Medicinal Plants and Pharmacognosy, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Enwei Tian
- Faculty of Medicinal Plants and Pharmacognosy, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Zhi Chao
- Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Faculty of Medicinal Plants and Pharmacognosy, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Guangzhou 510515, China.
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