Document Detail

Effects of food intake on the mucoadhesive and gastroretentive properties of submicron-sized chitosan-coated liposomes.
MedLine Citation:
PMID:  23036972     Owner:  NLM     Status:  In-Data-Review    
The gastrointestinal transition of mucoadhesive drug carriers may be affected by food intake, since food changes the physiological conditions of the gastrointestinal tract, and the food content itself is a physical obstruction for the drug carriers. Here we investigated the effects of food intake on the gastrointestinal transition and mucoadhesive function of submicron-sized chitosan-coated liposomes (ssCS-Lip). The stomach and small intestine were removed after oral administration of ssCS-Lip and non-coated liposomes (ssLip) containing fluorescent dye to fasted or fed rats, and retentive properties were quantitatively confirmed by measuring the amount of dye in each part of the gastrointestinal tract. Both types of liposome were retained in the stomach at approx. 40% in the fed rats at 1 h after oral administration, whereas transitions in the intestine were reduced compared to the fasted rats. However, the transition of ssCS-Lip in intestine was prolonged compared to ssLip even, in the fed state. The mucoadhesive behavior of ssCS-Lip was evaluated by confocal laser scanning microscopy. The ssCS-Lip tended to penetrate into the mucosal part of the intestine, and in addition, ssCS-Lip was detected in the basolateral side in both conditions, and therefore the mucopenetrative function was confirmed in the fed condition. Based on these results, we confirmed that ssCS-Lip shows a predominant gastrointestinal transition and mucopenetration, even after food intake.
Hikaru Sugihara; Hiromitsu Yamamoto; Yoshiaki Kawashima; Hirofumi Takeuchi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chemical & pharmaceutical bulletin     Volume:  60     ISSN:  1347-5223     ISO Abbreviation:  Chem. Pharm. Bull.     Publication Date:  2012  
Date Detail:
Created Date:  2012-10-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0377775     Medline TA:  Chem Pharm Bull (Tokyo)     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  1320-3     Citation Subset:  IM    
Department of Drug Delivery Technology and Sciences, Laboratory of Pharmaceutical Engineering, Gifu Pharmaceutical University.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Two New Nortriterpenoid Glycosides and a New Phenylpropanoid Glycoside from the Bulbs of Scilla scil...
Next Document:  Tinospinosides D, E, and Tinospin E, Further Clerodane Diterpenoids from Tinospora sagittata.