Abstract:
:Subcutaneous liraglutide-loaded multivesicular liposomes (Lrg-MVLs) were developed as a sustained drug-delivery system for treating diabetes and their properties were characterized. The Lrg-MVLs prepared using a two-step water-in-oil-in-water double emulsification process had a spherical appearance with a mean diameter of 6.69 μm and an encapsulation efficiency of 82.23 ± 4.78% without any initial burst release. Their pharmacodynamics (PD) and pharmacokinetics (PK) were also studied after a single subcutaneous administration to Sprague-Dawley (SD) rats with diabetes. The PD results demonstrated that Lrg-MVLs presented sustained glucose-lowering effects for nearly a week, while the pharmacokinetic parameters showed that the plasma liraglutide concentration of the designed preparation produced Cmax of 81.979 ± 12.140 pg/ml and an MRT0-t of 88.224 ± 3.893 h. Furthermore, retention of Lrg-MVLs at the injection site was studied semiquantitatively by an in vivo imaging system, which can be used to evaluate the drug release from MVLs in vivo. In conclusion, MVLs are a promising carrier for liraglutide and Lrg-MVLs deserve further study for the treatment of diabetes.
journal_name
Drug Delivjournal_title
Drug deliveryauthors
Zhang L,Ding L,Tang C,Li Y,Yang Ldoi
10.1080/10717544.2016.1180723subject
Has Abstractpub_date
2016-11-01 00:00:00pages
3358-3363issue
9eissn
1071-7544issn
1521-0464journal_volume
23pub_type
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