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Author Shelma, R. ♦ Sharma, C. P.
Source Sree Chitra Tirunal Institute for Medical Sciences & Technology
Content type Text
Publisher Journal of Materials Science-materials In Medicine
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Pharmacology and therapeutics
Subject Domain (in MeSH) Therapeutics ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment
Subject Keyword Drug Delivery
Abstract In the present investigation, bioadhesive property of chitosan (CS) was enhanced by the N-acylation with hexanoyl, lauroyl and oleoyl chlorides. The chemical structure of the modified polymer was characterized by FTIR and zeta potential measurements. The swelling ability was evaluated at alkaline pH. Mucin interactions and mucoadhesion experiments were performed under in vitro experimental conditions. Cytotoxicity experiments were employed to confirm the applicability of these particles as drug carriers. Finally in vitro evaluation of hydrophobic and hydrophilic drug release profile at acidic and alkaline pH was also conducted. A strong interaction between CS acyl derivatives and mucin was detected, which was further confirmed by an in situ mucoadhesion experiments with excised intestinal tissue. CS modified with oleoyl chloride showed better mucoadhesion property, as compared to the one modified with lower fatty acid groups. CS derivatives were found non-toxic on L-929 cell lines and provided sustained release of hydrophobic drugs under in vitro experimental conditions. From these studies it seems that hydrophobically modified CS is an interesting system for drug delivery applications.
Education Level UG and PG
Learning Resource Type Article
Educational Framework Medical Council of India (MCI)
Volume Number 21
Issue Number 7
Page Count 8
Starting Page 2133
Ending Page 2140