| Enhancing effect of Labrafac Lipophile WL 1349 on oral bioavailability of hydroxysafflor yellow A in rats. | |
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MedLine Citation:
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PMID: 18417306 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The objective of the present investigation was to clarify the mechanism by which Labrafac Lipophile WL 1349 (WL 1349) enhanced the oral bioavailability (BA) of hydroxysafflor yellow A (HSYA), the representative low permeable hydrophilic (biopharmaceutic classification system (BCS) Class III) drug. HSYA-phospholipid complex was prepared, and dissolved into WL 1349 with a certain surfactant to form a stable oil solution. Oral administration of HSYA aqueous solution at a dosage of 4.5mg/kg resulted a low plasma HSYA concentration with C(max) and AUC(0-8h) values of 0.105 microg/ml and 10.29 microg min/ml, respectively. HSYA-phospholipid complex oil solution with the same administration and dosage increased the plasma HSYA concentration significantly with C(max) and AUC(0-8h) values of 2.063 microg/ml and 381.145 microg min/ml, respectively. The results showed that WL 1349 could improve oral absorption of HSYA remarkably. Bioavailability investigations were performed to show WL 1349 dosage independent from HSYA absorption within the dosage from 1 ml/kg to 9 ml/kg. The test of bile duct ligation in rats showed that the oil solution containing WL 1349 did not result in detectable plasma HSYA concentration, but HSYA aqueous solution had the same AUC(0-8h) as the bile duct was not ligated. The in vitro lipolysis experiments of WL 1349 showed that WL 1349 was emulsified by deoxycholate, and then was hydrolyzed to fatty acids and monoglycerides by pancreatic lipase rapidly. The lipolysis products of WL 1349, caprylic acid, capric acid and caprylic and capric acid monoglycerides all improved the BA of HSYA in vivo. The results above indicated the emulsifying by bile, and hydrolysis to fatty acids and monoglycerides by pancreatic lipase was one of the enhancing mechanisms of HSYA-phospholipid complex oil solution absorption. |
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Authors:
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Shujing Wang; Minjie Sun; Qineng Ping |
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Publication Detail:
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Type: Journal Article Date: 2008-03-13 |
Journal Detail:
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Title: International journal of pharmaceutics Volume: 358 ISSN: 0378-5173 ISO Abbreviation: Int J Pharm Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-06-03 Completed Date: 2008-09-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7804127 Medline TA: Int J Pharm Country: Netherlands |
Other Details:
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Languages: eng Pagination: 198-204 Citation Subset: IM |
Affiliation:
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China Pharmaceutical University, Tong Jia Xiang No. 24, Nanjing, Jiangsu, China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Administration, Oral Animals Area Under Curve Bile Ducts / physiology Biological Availability Chalcone / administration & dosage, analogs & derivatives*, pharmacokinetics Chromatography, High Pressure Liquid Excipients Half-Life Ligation Lipolysis Male Oils Pharmaceutical Solutions Phospholipids Quinones / administration & dosage, pharmacokinetics* Rats Rats, Sprague-Dawley Reproducibility of Results Solubility Surface-Active Agents / pharmacokinetics* |
| Chemical | |
Reg. No./Substance:
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0/Excipients; 0/Oils; 0/Pharmaceutical Solutions; 0/Phospholipids; 0/Quinones; 0/Surface-Active Agents; 146087-19-6/hydroxysafflor yellow A; 94-41-7/Chalcone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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