Bile salt-reinforced alginate-chitosan beads.
Summary of "Bile salt-reinforced alginate-chitosan beads."
A polymeric delayed release protein delivery system was investigated with albumin as the model drug. The polysaccharide chitosan was reacted with sodium alginate in the presence of calcium chloride to form beads with a polyelectrolyte. In this study, attempts were made to extend albumin release in the phosphate buffer at pH 6.8 from the alginate-chitosan beads by reinforcing the matrix with bile salts. Sodium taurocholate was able to prevent albumin release at pH 1.2, protecting the protein from the acidic environment and extending the total albumin release at pH 6.8. This effect was explained by an interaction between the permanent negatively charged sulfonic acid of sodium taurocholate with the amino groups of chitosan. Mild formulation conditions, high bovine serum albumin (BSA) entrapment efficiency, and resistance to gastrointestinal release seem to be synergic and promising factors toward the development of an oral protein delivery form.
Affiliation
Pharmaceutical Technology Department, Faculty of Pharmacy, University of Gazi, Etiler, Ankara.
Journal Details
This article was published in the following journal.
Name: Pharmaceutical development and technology
ISSN: 1097-9867
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20653409
- DOI: http://dx.doi.org/10.3109/10837450.2010.502898
Medical and Biotech [MESH] Definitions
Taurodeoxycholic Acid
A bile salt formed in the liver by conjugation of deoxycholate with taurine, usually as the sodium salt. It is used as a cholagogue and choleretic, also industrially as a fat emulsifier.
Glycochenodeoxycholic Acid
A bile salt formed in the liver from chenodeoxycholate and glycine, usually as the sodium salt. It acts as a detergent to solubilize fats for absorption and is itself absorbed. It is a cholagogue and choleretic.
Glycodeoxycholic Acid
A bile salt formed in the liver by conjugation of deoxycholate with glycine, usually as the sodium salt. It acts as a detergent to solubilize fats for absorption and is itself absorbed. It is used as a cholagogue and choleretic.
Taurochenodeoxycholic Acid
A bile salt formed in the liver by conjugation of chenodeoxycholate with taurine, usually as the sodium salt. It acts as detergent to solubilize fats in the small intestine and is itself absorbed. It is used as a cholagogue and choleretic.
Taurolithocholic Acid
A bile salt formed in the liver from lithocholic acid conjugation with taurine, usually as the sodium salt. It solubilizes fats for absorption and is itself absorbed. It is a cholagogue and choleretic.
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