AAPS PharmSciTech

, 20:74 | Cite as

Oral Delivery of Methylthioadenosine to the Brain Employing Solid Lipid Nanoparticles: Pharmacokinetic, Behavioral, and Histopathological Evidences

  • Pramod Kumar
  • Gajanand Sharma
  • Varun Gupta
  • Ramanpreet Kaur
  • Kanika Thakur
  • Ruchi Malik
  • Anil Kumar
  • Naveen Kaushal
  • Om Prakash Katare
  • Kaisar RazaEmail author
Research Article Theme: Lipid-Based Drug Delivery Strategies for Oral Drug Delivery
Part of the following topical collections:
  1. Theme: Lipid-Based Drug Delivery Strategies for Oral Drug Delivery


The present study aimed to orally deliver methylthioadenosine (MTA) to the brain employing solid lipid nanoparticles (SLNs) for the management of neurological conditions like multiple sclerosis. The stearic acid–based SLNs were below 100 nm with almost neutral zeta potential and offered higher drug entrapment and drug loading. Cuprizone-induced demyelination model in mice was employed to mimic the multiple sclerosis–like conditions. It was observed that the MTA-loaded SLNs were able to maintain the normal metabolism, locomotor activity, motor coordination, balancing, and grip strength of the rodents in substantially superior ways vis-à-vis plain MTA. Histopathological studies of the corpus callosum and its subsequent staining with myelin staining dye luxol fast blue proved the potential of MTA-loaded SLNs in the remyelination of neurons. The pharmacokinetic studies provided the evidences for improved bioavailability and enhanced bioresidence supporting the pharmacodynamic findings. The studies proved that SLN-encapsulated MTA can be substantially delivered to the brain and can effectively remyelinate the neurons. It can reverse the multiple sclerosis–like symptoms in a safer and effective manner, that too by oral route.


multiple sclerosis brain delivery lipid-based systems remyelination safety 


Funding information

The financial support from the Central University of Rajasthan, Bandar Sindri, Distt., Ajmer, India, is duly acknowledged.

Compliance with Ethical Standards

All the animal protocols were duly approved by the Animal Ethics Committee, Panjab University, Chandigarh, and the studies were performed in strict accordance to the guidelines laid by the University in accordance with the apt national regulations.

Conflict of Interest

The authors declare that they have no conflict of interest.


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Copyright information

© American Association of Pharmaceutical Scientists 2019

Authors and Affiliations

  1. 1.Department of Pharmacy, School of Chemical Sciences and PharmacyCentral University of RajasthanAjmerIndia
  2. 2.Department of Pharmaceutical AnalysisNational Institute of Pharmaceutical Education and Research (NIPER)GuwahatiIndia
  3. 3.Division of Pharmaceutics, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies (UGC-CAS)Panjab UniversityChandigarhIndia
  4. 4.Division of Pharmacology, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies (UGC-CAS)Panjab UniversityChandigarhIndia
  5. 5.Department of BiophysicsPanjab UniversityChandigarhIndia

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