Abstract:
CONTEXT:Intraoral drug delivery as mucosal delivery pathway provides a huge platform in the pharmaceutical field. OBJECTIVE:Combining mucoadhesiveness and controlled release of thio-poly acrylic acid as advanced excipient for buccal drug delivery. MATERIALS AND METHODS:Mediated by carbodiimide, cysteine was covalently attached to poly acrylic acid. This thiomer was assessed with regard to cytotoxicity, stability, mucoadhesion, and rheology as well as release behavior of Lidocaine. RESULTS:Stability assays of thio-poly acrylic acid were complying with United States Pharmacopeia requirements. Mucoadhesion assay such as tensile (total work of adhesion), bioadhesion, rotating cylinder revealed as this thiomer was superior in comparison to non-thiolated poly acrylic acid with 7.61-fold, 2.8-fold, 5.61-fold improvement, respectively without any toxic effect. The cell viability exhibited over 90% after incubation time of 3 h and 24 h respectively. Lidocaine release showed 1.98-fold more controlled release over 3 h in comparison to unmodified poly acrylic acid. CONCLUSION:Taken the findings in consideration, thio-poly acrylic acid provides excellent stability, controlled release, and superior mucoadhesive features. The prolonged residence time of thio-poly acrylic acid represents a pillar in the buccal drug delivery.
journal_name
Drug Delivjournal_title
Drug deliveryauthors
Laffleur F,Leder N,Barthelmes Jdoi
10.3109/10717544.2015.1122673subject
Has Abstractpub_date
2016-07-01 00:00:00pages
2065-73issue
6eissn
1071-7544issn
1521-0464journal_volume
23pub_type
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