Enhanced nose-to-brain delivery of tranilast using liquid crystal formulations

See GL 1 , Arce F 1 , Dahlizar S 2 , Okada A 3 , Fadli MFBM 4 , Hijikuro I 5 Show all authors , Itakura S 6 , Katakura M 6 , Todo H 6 , Sugibayashi K 7

Affiliations 

  • 1 Graduate School of Pharmaceutical Sciences, Josai University, Saitama, Japan; Department of Pharmacy, School of Health Care Professions, University of San Carlos, Cebu, the Philippines
  • 2 Graduate School of Pharmaceutical Sciences, Josai University, Saitama, Japan; Department of Pharmacy, Faculty of Health Science, Syarif Hidayatullah State Islamic University Jakarta, Banten, Indonesia
  • 3 Graduate School of Pharmaceutical Sciences, Josai University, Saitama, Japan
  • 4 School of Pharmacy, Management and Science University, Selangor, Malaysia
  • 5 Farnex Inc., Tokyo Institute of Technology, Yokohama Venture Plaza, Nagatsuta-cho, Midori-ku, Yokohama, Japan
  • 6 Graduate School of Pharmaceutical Sciences, Josai University, Saitama, Japan; School of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan
  • 7 Graduate School of Pharmaceutical Sciences, Josai University, Saitama, Japan; School of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan. Electronic address: sugib@josai.ac.jp
J Control Release, 2020 Sep 10;325:1-9.
PMID: 32598958 DOI: 10.1016/j.jconrel.2020.06.028

Abstract

Intranasal administration is poised as a competent method in delivering drugs to the brain, because the nasal route has a direct link with the central nervous system bypassing the formidable blood-brain barrier. C17-monoglycerol ester (MGE) and glyceryl monooleate (GMO) as liquid crystal (LC)-forming lipids possess desirable formulation characteristics as drug carriers for intranasally administered drugs. This study investigated the effect of LC formulations on the pharmacokinetics of tranilast (TL), a lipophilic model drug, and its distribution in the therapeutic target regions of the brain in rats. The anatomical biodistribution of LC formulations was monitored using micro-computed tomography tandem in vivo imaging systems. MGE and GMO effectively formed LC with suitable particle size, zeta potential, and viscosity supporting the delivery of TL to the brain. MGE and GMO LC formulations enhanced brain uptake by 10- to 12-fold and 2- to 2.4- fold, respectively, compared with TL solution. The olfactory bulb had the highest TL concentration and fluorescent signals among all the brain regions, indicating a direct nose-to-brain delivery pathway of LC formulations. LC-forming lipids, MGE and GMO, are potential biomaterials in formulations intended for intranasal administration.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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