Evidence map›Paper›PMID 24106427›Full record

ArticleInternational journal of nanomedicine2013

Self-aggregated nanoparticles based on amphiphilic poly(lactic acid)-grafted-chitosan copolymer for ocular delivery of amphotericin B.

Wenjun Zhou, Yuanyuan Wang, Jiuying Jian, Shengfang Song

Abstract read
In one paragraph

Article in International journal of nanomedicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed.

  1. Article
  2. Article
  3. Nanomedicine in Ophthalmology: From Bench to Bedside.Journal of clinical medicine · 2024
    Review
  4. Article
  5. Article
  6. Article
  7. Nanotechnology for Topical Drug Delivery to the Anterior Segment of the Eye.International journal of molecular sciences · 2021
    Review
  8. Review
  9. Review
  10. Review
  11. Advances and limitations of drug delivery systems formulated as eye drops.Journal of controlled release : official journal of the Controlled Release Society · 2020
    Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Wenjun ZhouDepartment of Ophthalmology, Yongchuan Hospital, Chongqing Medical University, Chongqing, People's Republic of China.
Yuanyuan Wang
Jiuying Jian
Shengfang Song

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of this study was to develop a self-aggregated nanoparticulate vehicle using an amphiphilic poly(lactic acid)-grafted-chitosan (PLA-g-CS) copolymer and to evaluate its potential for ocular delivery of amphotericin B.

methodsA PLA-g-CS copolymer was synthesized via a "protection-graft-deprotection" procedure and its structure was confirmed by Fourier transform infrared spectroscopy, (1)H nuclear magnetic resonance, and X-ray diffraction spectra. Amphotericin B-loaded nanoparticles based on PLA-g-CS (AmB/PLA-g-CS) were prepared by the dialysis method and characterized for particle size, zeta potential, and encapsulation efficiency. Studies of these AmB/PLA-g-CS nanoparticles, including their mucoadhesive strength, drug release properties, antifungal activity, ocular irritation, ocular pharmacokinetics, and corneal penetration were performed in vitro and in vivo.

resultsFourier transform infrared spectroscopy, (1)H nuclear magnetic resonance, and X-ray diffraction spectra showed that the PLA chains were successfully grafted onto chitosan molecules and that crystallization of chitosan was suppressed. The self-aggregated PLA-g-CS nanoparticles had a core-shell structure with an average particle size of approximately 200 nm and zeta potentials higher than 30 mV. Amphotericin B was incorporated into the hydrophobic core of the nanoparticles with high encapsulation efficiency. Sustained drug release from the nanoparticles was observed in vitro. The ocular irritation study showed no sign of irritation after instillation of the PLA-g-CS nanoparticles into rabbit eyes. The minimal inhibitory concentration of the AmB/PLA-g-CS nanoparticles showed antifungal activity similar to that of free amphotericin B against Candida albicans. The in vivo ocular pharmacokinetic study suggested that the PLA-g-CS nanoparticles have the advantage of prolonging residence time at the ocular surface. The corneal penetration study showed that the PLA-g-CS nanoparticles could penetrate into the cornea.

conclusionOur results suggest that this nanoparticulate vehicle based on a PLA-g-CS copolymer might be a promising system for effective ocular delivery of amphotericin B.

Indexed as

Acrylic ResinsAdministration, OphthalmicAmphotericin BAnimalsAntifungal AgentsCandidaCell SurvivalChitosanCrystallizationDiffusionDrug CompoundingEye Infections, FungalHydrophobic and Hydrophilic InteractionsNanocapsulesParticle SizeRabbitsAcrylic ResinsAmphotericin BAntifungal AgentsChitosanchitosan-poly(acrylic acid)Nanocapsulesamphotericin Bchitosannanoparticlespoly(lactic acid)

Identifiers

PMID24106427
PMCPMC3792006

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.