Simultaneous Evaluation of Dissolution and Absorption Study of Compound Danshen Tablets and Capsules Based on Cellular Electrical Sensing Model

This study explores the dissolution mechanism and absorption process of compound Danshen tablets (CDTs) and compound Danshen capsules (CDCs) in vitro. Taking the cell index as the evaluation index of dissolution and absorption of multi-component solid preparations of CDTs and CDCs, it breaks through the idea of traditional research. We used real-time cell-based assay (RTCA) to provide a new idea and method for the consistency evaluation of traditional Chinese medicine (TCM) compound preparations. The drug dissolution and absorption simulation system (DDASS) was established to obtain the dissolution and absorption samples of compound Danshen solid preparations at different time points. The cell index (CI) of the sample to H9C2 cells was detected by RTCA technology, and the dissolution and absorption percentage were calculated based on this index to obtain the dissolution and absorption kinetics model. Meanwhile, one batch of tablets and one batch of capsules (batch numbers ZKC1816 and 202101001) were selected to conduct the overall animal pharmacodynamic experiment to verify the feasibility of drug effect evaluation with cell index as an indicator. The best fitting model of dissolution curves of each batch of CDTs and CDCs is the Weibull model. There was a good correlation (r > 0.86) between the dissolution-absorption-pharmacodynamic curve. Based on RTCA technology, we have established the comprehensive evaluation method for cell biology of compound Danshen solid preparations in line with the overall concept of TCM and a synchronous evaluation system of dissolution and absorption in vitro of new TCM compound solid preparations.