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Functions of a chitosan-orotic acid salt in the gastrointestinal tract
Yoshifumi Murata1, Naoko Kojima, Susumu Kawashima
1Faculty of Pharmaceutical Science, Hokuriku University, Kanagawa-machi, Kanazawa, Japan. y-murata@hokuriku-u.ac.jp
Abstract:
A chitosan (CS)-orotic acid salt (CS-OT) was prepared, and the release of orotic acid (OT) from CS-OT as well as the adsorption of bile acids by CS-OT was investigated in vitro. The amount of OT released from CS-OT was about 2-2.7 micromol/mg CS-OT and this changed depending on the species of CS. CS-OT also adsorbed bile acids and the amount increased incrementally according to the number of amino group contained in CS. Furthermore, CS-OT was given to rats as feed in order to investigate the influence on serum cholesterol levels. A decrease in serum cholesterol levels was observed in the group, which was fed a diet containing CS-OT or CS for 1-2 weeks, but no differences in body weight changes were recognized. Therefore, CS-OT may be applied to treating hyperlipidemia.
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