Enhancing effect of Ulex europaeus agglutinin I modified liposomes on oral insulin absorption in mice / 药学学报
Acta Pharmaceutica Sinica
;
(12): 1006-1010, 2004.
Article
Dans Chinois
| WPRIM
| ID: wpr-241372
ABSTRACT
<p><b>AIM</b>To investigate the enhancing effect on insulin absorption through GI. tract in mice by using the Ulex europaeus agglutinin I (UEA1) modified liposomes as the carrier.</p><p><b>METHODS</b>UEA1 modified phosphatidylethanolamine (PE) was prepared by conjugating method of 1-ethyl-3-(3'-dimethylaminopropyl) carbodiimide (EDC), then the modified compound (PE-UEA1) was incorporated into the conventional liposomes of insulin to obtain UEA1 modified liposomes. The agglutination test was performed to examine the UEA1 biological activities after synthesis and modification. When liposomes were applied to healthy mice or diabetic mice at insulin dose of 350 u x kg(-1) orally, the hypoglycemic effect was investigated according to the blood glucose level determination.</p><p><b>RESULTS</b>The blood glucose levels of the healthy mice reduced by UEA1 modified liposomes were (84 +/- 15)% at 4 h, (78 +/- 11)% at 8 h and (90 +/- 12)% at 12 h after oral administration. The conventional liposomes and saline showed no effect. The blood glucose levels of the diabetic mice reduced by UEA1 modified liposomes were (73 +/- 7)% at 4 h, (74 +/- 9)% at 8 h, (86 +/- 9)% at 12 h after oral administration.</p><p><b>CONCLUSION</b>The UEA1 modified liposomes promote the oral absorption of insulin due to the specific-site combination on M cell membrane.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pharmacologie
/
Phosphatidyléthanolamine
/
Plantes médicinales
/
Sang
/
Glycémie
/
Vecteurs de médicaments
/
Pharmacocinétique
/
Chimie
/
Administration par voie orale
/
Systèmes de délivrance de médicaments
Limites du sujet:
Animaux
langue:
Chinois
Texte intégral:
Acta Pharmaceutica Sinica
Année:
2004
Type:
Article
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