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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Liu, Qi-yuan Zhang, Zhen-hai Jin, Xin Jiang, Yan-Rong Jia, Xiao-Bin |
| Description | Country affiliation: China Author Affiliation: Liu QY ( Key Laboratory of New Drug Delivery System of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Nanjing, China.) |
| Abstract | OBJECTIVES: The aim of this study is to improve the dissolution and oral bioavailability of tanshinone IIA (TAN). METHODS: Solid dispersions of TAN with low-molecular-weight chitosan (LMC) were prepared and the in-vitro dissolution and in-vivo performance were evaluated. KEY FINDINGS: At 1 h, the extent of dissolution of TAN from the LMC-TAN system (weight ratio 9 : 1) increased about 368.2% compared with the pure drug. Increasing the LMC content from 9 : 1 to 12 : 1 in this system did not significantly increase the rate and the extent of dissolution. Differential scanning calorimetry, X-ray diffraction and scanning electron microscopy demonstrated the formation of amorphous tanshinone IIA and the absence of crystallinity in the solid dispersion. Fourier transform infrared spectroscopy revealed that there was no interaction between drug and carrier. In-vivo test showed that LMC-TAN solid dispersion system presented significantly larger AUC0-t , which was 0.67 times that of physical mixtures and 1.17 times that of TAN. Additionally, the solid dispersion generated obviously higher Cmax and shortened Tmax compared with TAN and physical mixtures. CONCLUSIONS: In conclusion, the LMC -based solid dispersions could achieve complete dissolution, accelerated absorption rate and superior oral bioavailability. |
| File Format | HTM / HTML |
| ISSN | 00223573 |
| Issue Number | 6 |
| Volume Number | 65 |
| e-ISSN | 20427158 |
| Journal | Journal of Pharmacy and Pharmacology |
| Language | English |
| Publisher | Wiley |
| Publisher Date | 2013-06-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Pharmacology Chitosan Chemistry Pharmacokinetics Diterpenes, Abietane Administration, Oral Animals Area Under Curve Biological Availability Administration & Dosage Drug Carriers Male Molecular Weight Rats Rats, Sprague-dawley Solubility Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pharmacology Pharmaceutical Science |
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