AAPS PharmSciTech

, Volume 16, Issue 2, pp 413–427 | Cite as

Protein-Functionalized PLGA Nanoparticles of Lamotrigine for Neuropathic Pain Management

  • Jigar Lalani
  • Sushilkumar Patil
  • Atul Kolate
  • Riddhi Lalani
  • Ambikanandan Misra
Research Article


Lamotrigine (LTG), a sodium and calcium channel blocker, has demonstrated efficacy for the treatment of neuropathic pain in multiple, randomized, controlled trials. However, its potential clinical applications in neuropathic pain are limited due to the risk of dose-dependent severe rashes associated with high dose and prompt dose escalation. Further, the poor pharmacokinetic profile due to non-selective distribution to organs other than brain reduces the efficacy of dosage regimen. Therefore, the aim of present investigation is to develop surface-engineered LTG nanoparticles (NPs) using transferrin and lactoferrin as ligand to deliver higher amount of drug to brain and improve the biodistribution and pharmacokinetic profile of drug with prolonged duration of action and reduced accumulation in non-target organs. The LTG NPs were prepared by nanoprecipitation and optimized by factorial design for high entrapment and optimized particle size. The optimized NPs were surface functionalized by conjugating with the lactoferrin (Lf) and transferrin (Tf) as ligands. The developed NPs were characterized for different physicochemical parameters and stability. The in vivo biodistribution showed preferential targeting to brain and reduced accumulation in non-target organs over a prolonged duration of time. Finally, partial sciatic nerve injury model was used to demonstrate the increased pharmacodynamic response as antinociceptive effect. Both biodistribution and pharmacodynamic study in mice confirmed that the approach used for LTG can help to increase clinical applications of LTG due to brain targeting and reduced side effects.


brain targeting factorial design lactoferrin lamotrigine transferrin 


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Copyright information

© American Association of Pharmaceutical Scientists 2014

Authors and Affiliations

  • Jigar Lalani
    • 1
  • Sushilkumar Patil
    • 1
  • Atul Kolate
    • 1
  • Riddhi Lalani
    • 1
  • Ambikanandan Misra
    • 1
  1. 1.Pharmacy Department, Faculty of Technology and EngineeringThe Maharaja Sayajirao University of BarodaVadodaraIndia

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