Abstract
Background: Linagliptin (LNG) exhibits poor bioavailability and numerous side effects, significantly limiting its use. Transdermal drug delivery systems (TDDS) offer a potential solution to overcome the first-pass effect and gastrointestinal reactions associated with oral formulations.
Objective: The aim of this study was to develop LNG microparticle gels to enhance drug bioavailability and mitigate side effects.
Methods: Linagliptin hyaluronic acid (LNG-HA) microparticles were prepared by spray drying method and their formulation was optimized via a one-factor method. The solubility and release were investigated using the slurry method. LNG-HA microparticle gels were prepared and optimised using in vitrotransdermal permeation assay. The hypoglycaemic effect of the LNG-HA microparticle gel was examined on diabetic mice.
Results: The results indicated that the LNG-HA microparticle encapsulation rate was 84.46%. Carbomer was selected as the gel matrix for the microparticle gels. Compared to the oral API, the microparticle gel formulation demonstrated a distinct biphasic release pattern. In the first 30 minutes, only 43.56% of the drug was released, followed by a gradual release. This indicates that the formulation achieved a slow-release effect from a dual reservoir system. Furthermore, pharmacodynamic studies revealed a sustained hypoglycemic effect lasting for 48 hours with the LNG microparticle gel formulation.
Conclusion: These findings signify that the LNG microparticle gel holds significant clinical value for providing sustained release and justifies its practical application.
[http://dx.doi.org/10.7897/2230-8407.09567]
[http://dx.doi.org/10.2165/11630900-000000000-00000] [PMID: 22568694]
[http://dx.doi.org/10.1007/s13346-020-00839-9] [PMID: 32804301]
[http://dx.doi.org/10.1016/j.diabres.2019.107843] [PMID: 31518657]
[http://dx.doi.org/10.1016/j.ijpharm.2021.121290] [PMID: 34788674]
[http://dx.doi.org/10.1016/j.ijpharm.2018.11.032] [PMID: 30448309]
[http://dx.doi.org/10.1016/j.jddst.2022.103939]
[http://dx.doi.org/10.1016/j.ijpharm.2013.02.040] [PMID: 23462366]
[http://dx.doi.org/10.1517/17425247.2014.875528] [PMID: 24392787]
[http://dx.doi.org/10.1039/c2nr11606e] [PMID: 22334401]
[http://dx.doi.org/10.1016/j.ijpharm.2005.07.014] [PMID: 16246513]
[http://dx.doi.org/10.1016/j.ejps.2018.03.020] [PMID: 29572160]
[http://dx.doi.org/10.1016/j.polymer.2008.01.027]
[http://dx.doi.org/10.1358/mf.2008.30.7.1159653] [PMID: 18985178]
[http://dx.doi.org/10.1016/S0378-5173(01)00634-2] [PMID: 11337170]
[http://dx.doi.org/10.1016/j.jconrel.2016.03.011] [PMID: 26965956]
[http://dx.doi.org/10.1016/S0168-3659(02)00137-2] [PMID: 12175744]
[http://dx.doi.org/10.1021/mp060041n] [PMID: 17274668]
[http://dx.doi.org/10.1016/j.ejps.2010.02.002] [PMID: 20149868]
[http://dx.doi.org/10.1111/j.1468-3083.2004.01180.x] [PMID: 15857456]
[http://dx.doi.org/10.1016/j.ijpharm.2020.119127] [PMID: 32036009]
[http://dx.doi.org/10.1016/j.jddst.2021.102775]
[http://dx.doi.org/10.1016/j.ijpharm.2019.118847] [PMID: 31759994]
[http://dx.doi.org/10.3390/pharmaceutics4010071] [PMID: 24300181]
[http://dx.doi.org/10.1016/j.addr.2003.10.025] [PMID: 15019749]
[http://dx.doi.org/10.1002/jps.21603]