Cited by 235Advanced Drug Delivery SystemsNanoparticle-Based Drug DeliveryAdvancements in Transdermal Drug Delivery

Rivastigmine-loaded PLGA and PBCA nanoparticles: Preparation, optimization, characterization, in vitro and pharmacodynamic studies

Joshi, Shrinidh A., Chavhan, Sandip S., Sawant, Krutika K.·2010·European Journal of Pharmaceutics and Biopharmaceutics

Abstract

Sustained release nanoparticulate formulations of Rivastigmine tartrate (RT) were prepared, optimized (using factorial design) and characterized using the biodegradable polymers, PLGA and PBCA as carriers. The pharmacodynamic performances of the nanoparticles (NPs) were evaluated for brain targeting and memory improvement in scopolamine-induced amnesic mice using Morris Water Maze Test. PLGA NPs were prepared by nanoprecipitation technique, while PBCA NPs were prepared by emulsion polymerization technique. Effect of key formulation variables on particle size (PS) and percentage drug entrapment (PDE) of NPs was studied by using factorial design. PLGA NPs showed PS of 135.6±4.2nm and PDE of 74.46±0.76 %, whereas PBCA NPS showed PS of 146.8±2.6nm and PDE of 57.32±0.91%. FTIR and GPC characterization confirmed complete polymerization of n-butyl cyanoacrylate (nBCA) monomer into PBCA. DSC thermograms indicated that RT was dispersed as amorphous state in both PLGA and PBCA NPs. TEM studies indicated that the NPs were spherical. In vitro studies showed 30.86±2.07% and 43.59±3.80% release from PLGA and PBCA NPs in 72h, respectively. Pharmacodynamic study demonstrated faster regain of memory loss in amnesic mice with both PLGA and PBCA NPs when compared to RT solution. This indicates rapid and higher extent of transport of RT into the mice brain and thus shows the suitability of both NPs as potential carriers for providing sustained brain delivery of RT.

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Crossref · 10.1016/j.ejpb.2010.07.007

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  • In preclinical studies, RT-loaded PLGA and PBCA-80-coated poly(n-butylcyanoacrylate) nanoparticles have shown potential in brain targeting.

    “In preclinical studies, RT-loaded poly(lactide-co-gycolide) (PLGA) and polysorbate 80 (PBCA-80)-coated poly(n-butylcyanoacrylate) nanoparticles have shown potential in brain targeting.100”
  • RT-loaded PLGA and PBCA-80-coated PBCA nanoparticles improved memory faster than RT in solution in the Morris Water Maze test.

    “These nanoformulations improved the memory faster than RT in solution, as confirmed by the Morris Water Maze test.100”

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Authors
Joshi, S. A., Chavhan, S. S., & Sawant, K. K.
Affiliations
Maharaja Sayajirao University of Baroda (IN)
Corresponding author
Sawant, Krutika K.
Venue
European Journal of Pharmaceutics and Biopharmaceutics
Publisher
Elsevier BV
Published
2010-10
Volume
76
Issue
2
Pages
189-199
ISSN
0939-6411 (ISSN-L)
OpenAlex
W2054546290
Cited by
235
References
53
Citations by year
2026: 3 · 2025: 3 · 2024: 11 · 2023: 18 · 2022: 14 · 2021: 15 · 2020: 22 · 2019: 22 · 2018: 10 · 2017: 15 · 2016: 18 · 2015: 19 · 2014: 18 · 2013: 26 · 2012: 13
FWCI
10.43
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Pharmaceutics and Biopharmaceutics (publishedVersion)
  • PubMed (publishedVersion)
Funders
Sun Pharma
Topics
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advanced Drug Delivery Systems
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmaceutical Science › Advancements in Transdermal Drug Delivery
Keywords
PLGA nanoparticles, sustained drug release, brain targeting, memory enhancement, scopolamine-induced amnesia, nanoprecipitation, emulsion polymerization, encapsulation efficiency, particle size, n-butyl cyanoacrylate, amorphous drug dispersion, factorial design optimization, in vitro drug release
MeSH terms
Rivastigmine, Polylactic Acid-Polyglycolic Acid Copolymer, Amnesia, Animals, Biological Transport, Brain, Delayed-Action Preparations, Disease Models, Animal, Drug Carriers, Enbucrilate, Particle Size, Polyglycolic Acid, Scopolamine, Drug Delivery Systems, Neuroprotective Agents, Maze Learning, Lactic Acid, Phenylcarbamates, Mice, Nanoparticles

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