Cited by 70Nanoparticle-Based Drug DeliveryAdvanced Drug Delivery SystemsAdvancements in Transdermal Drug Delivery

Electrosteric stealth Rivastigmine loaded liposomes for brain targeting: preparation, characterization, ex vivo, bio-distribution and in vivo pharmacokinetic studies

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Nageeb El-Helaly, Sara, Abd Elbary, Ahmed, Kassem, Mohamed A., El-Nabarawi, Mohamed A.·2017·Drug Delivery

Abstract

Being one of the highly effective drugs in treatment of Alzheimer's disease, Rivastigmine brain targeting is highly demandable, therefore liposomal dispersion of Rivastigmine was prepared containing 2 mol% PEG-DSPE added to Lecithin, Didecyldimethyl ammonium bromide (DDAB), Tween 80 in 1:0.02:0.25 molar ratio. A major challenge during the preparation of liposomes is maintaining a stable formulation, therefore the aim of our study was to increase liposomal stability by addition of DDAB to give an electrostatic stability and PEG-DSPE to increase stability by steric hindrance, yielding what we called an electrosteric stealth (ESS) liposomes. A medium nano-sized liposome (478 ± 4.94 nm) with a nearly neutral zeta potential (ZP, -8 ± 0.2 mV) and an entrapment efficiency percentage of 48 ± 6.22 was prepared. Stability studies showed no major alteration after three months storage period concerning particle size, polydispersity index, ZP, entrapment efficiency and in vitro release study confirming the successful formation of a stable liposomes. No histopathological alteration was recorded for ESS liposomes of the sheep nasal mucosa. While ESS liposomes showed higher % of drug permeating through the sheep nasal mucosa (48.6%) than the drug solution (28.7%). On completing the in vivo pharmacokinetic studies of 36 rabbits showed 424.2% relative bioavailability of the mean plasma levels of the formula ESS compared to that of RHT intranasal solution and 486% relative bioavailability of the mean brain levels.

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Crossref · 10.1080/10717544.2017.1309476

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  1. Burgess D, Wright J. (2012). Long acting injections and implants, advances in delivery science and technology. Berlin, Germany: Springer

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Authors
Nageeb El-Helaly, S., Abd Elbary, A., Kassem, M. A., & El-Nabarawi, M. A.
Affiliations
  • Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
  • Cairo University (EG)
Venue
Drug Delivery
Published
2017-01-01
Volume
24
Issue
1
Pages
692-700
ISSN
  • 1071-7544 (ISSN-L)
  • 1521-0464
OpenAlex
W2606003614
Cited by
69
References
49
Citations by year
2026: 7 · 2025: 6 · 2024: 13 · 2023: 12 · 2022: 8 · 2021: 5 · 2020: 9 · 2019: 3 · 2018: 6
FWCI
1.77
Type
journal article
Language
en
Open access
Locations
  • Drug Delivery (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advanced Drug Delivery Systems
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advancements in Transdermal Drug Delivery
Keywords
rivastigmine, liposomes, brain targeting, Alzheimer's disease, DSPE-PEG, electrostatic stabilization, steric hindrance, liposome stability, nasal bioavailability, pharmacokinetics, brain drug levels, zeta potential
MeSH terms
Rivastigmine, Animals, Brain, Liposomes, Particle Size, Phosphatidylethanolamines, Polyethylene Glycols, Sheep

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