Document Detail

Hyaluronic acid L-cysteine conjugate exhibits controlled-release potential for mucoadhesive drug delivery.
MedLine Citation:
PMID:  22530303     Owner:  NLM     Status:  In-Process    
Hyaluronic acid-L-cysteine conjugate, a novel thiolated polymer, was synthesized and characterized for mucoadhensive drug delivery. L-Cysteine was covalently attached to hyaluronic acid via the formation of an amide bond. Adhesion studies on the mucosa indicated a 4.82-fold increase in the adhesion force of the obtained conjugate (containing 210.58 micromol thiol groups per gram polymer) versus unmodified hyaluronic acid. The results of a peptidase inhibition study revealed that the inhibitory effect of hyaluronic acid toward trypsin and chymotrypsin was significantly improved compared to hyaluronic acid. Permeation studies utilizing a MDCK cell monolayer system demonstrated a sustained drug release. Based on these features the novel thiolated polymer might represent a promising multifunctional excipient for various drug delivery systems.
Xiaosi Li; Gonglong Yu; Ke Jin; Zongning Yin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Die Pharmazie     Volume:  67     ISSN:  0031-7144     ISO Abbreviation:  Pharmazie     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-04-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9800766     Medline TA:  Pharmazie     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  224-8     Citation Subset:  IM    
Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, PR China.
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