Home | About PM | Editorial board | Search | Ahead of print | Current Issue | Archives | Instructions | Subscribe | Advertise | Contact us |  Login 
Pharmacognosy Magazine
Search Article 
Advanced search 
Year : 2014  |  Volume : 10  |  Issue : 37  |  Page : 9-17

Effect of various absorption enhancers based on tight junctions on the intestinal absorption of forsythoside A in Shuang-Huang-Lian, application to its antivirus activity

1 College of Pharmacy, Nanjing University of Chinese Medicine; Jiangsu Engineering Research Center for Efficient Delivery System of TCM; Nanjing Engineering Research Center for Industrialization of Chinese Medicine Pellets, Nanjing, China
2 Department of Pharmacology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
3 College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
4 First Medicine College, Nanjing University of Chinese Medicine, Nanjing, China

Correspondence Address:
Liuqing Di
College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210046
Login to access the Email id

Source of Support: Supported fi nancially by “Qing Lan” Project from Jiangsu Provincial Technology Innovation Team Support Scheme, the priority Academic Program Development of Jiangsu Higher Education Institution (No.ysxk-2010) and 2012 program sponsored for scientifi c innovation research of college graduate in Jiangsu province (623), Conflict of Interest: None

DOI: 10.4103/0973-1296.126651

Rights and Permissions

Background: Forsythoside A (FTA), one of the main active ingredients in Shuang-Huang-Lian (SHL), possesses strong antibacterial, antioxidant and antiviral effects, and its pharmacological effects was higher than that of other ingredients, but the absolute bioavailability orally was approximately 0.72%, which was significantly low, influencing clinical efficacies of its oral preparations seriously. Materials and Methods: In vitro Caco-2 cell and in vivo pharmacokinetics study were simultaneously performed to investigate the effects of absorption enhancers based on tight junctions: sodium caprate and water-soluble chitosan on the intestinal absorption of FTA, and the eventual mucosal epithelial damage resulted from absorption enhancers was evaluated by MTT test and morphology observation, respectively. The pharmacological effects such as antivirus activity improvement by absorption enhancers were verified by MDCK damage inhibition rate after influenza virus propagation. Results: The observations from in vitro Caco-2 cell showed that the absorption of FTA in SHL could be improved by absorption enhancers. Meanwhile, the absorption enhancing effect of water-soluble chitosan may be almost saturable up to 0.0032% (w/v), and sodium caprate at concentrations up to 0.64 mg/mL was safe, but water-soluble chitosan at different concentrations was all safe for these cells. In pharmacokinetics study, water-soluble chitosan at dosage of 50 mg/kg improved the bioavailability of FTA in SHL to the greatest extent, and was safe for gastrointestine from morphological observation. Besides, treatment with SHL with water-soluble chitosan at dosage of 50 mg/kg prevented MDCK damage after influenza virus propagation better significantly than that of control. Conclusion: Water-soluble chitosan at dosage of 50 mg/kg might be safe and effective absorption enhancer for improving the bioavailability of FTA and the antivirus activity in vitro in SHL.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded147    
    Comments [Add]    
    Cited by others 3    

Recommend this journal