Evidence map›Paper›PMID 16353959›Full record

ArticleAAPS PharmSciTech2005

Preparation and characterization of chitosan and trimethyl-chitosan-modified poly-(epsilon-caprolactone) nanoparticles as DNA carriers.

Jochen Haas, M N V Ravi Kumar, Gerrit Borchard, Udo Bakowsky, Claus-Michael Lehr

Abstract readComparative Study
In one paragraph

Article in AAPS PharmSciTech, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Trimethyl chitosan and its applications in drug delivery.Journal of materials science. Materials in medicine · 2009
    Review
  10. Nanovehicular intracellular delivery systems.Journal of pharmaceutical sciences · 2008
    Review
  11. 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

5 authors.

Jochen HaasDepartment of Biopharmaceutics and Pharmaceutical Technology, Saarland University, Building 8.1, 66123 Saarbrücken, Germany.
M N V Ravi Kumar
Gerrit Borchard
Udo Bakowsky
Claus-Michael Lehr

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The purpose of this research was to prepare poly-(epsilon-caprolactone) (PCL) particles by an emulsion-diffusion-evaporation method using a blend of poly-(vinyl alcohol) and chitosan derivatives as stabilizers. The chitosan derivatives used were chitosan hydrochloride and trimethyl chitosans (TMC) with varying degrees of quaternization. Particle characteristics-size, zeta potential, surface morphology, cytotoxicity, and transfection efficiency-were investigated. The developed method yields PCL nanoparticles in the size range of 250 to 300 nm with a positive surface charge (2.5 to 6.8 mV). The cytotoxicity was found to be moderate and virtually independent of the stabilizers' concentration with the exception of the highly quaternized TMC (degree of substitution 66%) being significantly more toxic. In immobilization experiments with gel electrophoresis, it could be shown that these cationic nanoparticles (NP) form stable complexes with DNA at a NP:DNA ratio of 3:1. These nanoplexes showed a significantly higher transfection efficiency on COS-1 cells than naked DNA.

Indexed as

AnimalsCaproatesCell SurvivalChitosanChlorocebus aethiopsCOS CellsDNADrug CarriersLactonesNanostructuresTechnology, PharmaceuticalCaproatescaprolactoneChitosanDNADrug CarriersLactones

Identifiers

PMID16353959
PMCPMC2750407

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.