Evidence map›Paper›PMID 25431653›Full record

ArticleRSC advances2014

Synthesis and Characterization of a Poly(ethylene glycol)-Poly(simvastatin) Diblock Copolymer.

Theodora A Asafo-Adjei, Thomas D Dziubla, David A Puleo

Abstract read
In one paragraph

Article in RSC advances, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Tuning Properties of Poly(ethylene glycol)-Reactive & functional polymers · 2017
    Article
  6. Review
  7. 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

3 authors.

Theodora A Asafo-AdjeiDepartment of Biomedical Engineering, University of Kentucky, Lexington, KY, USA.
Thomas D DziublaDepartment of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, USA.
David A PuleoDepartment of Biomedical Engineering, University of Kentucky, Lexington, KY, USA.

Funding

Modulating Inflammation and Fibrosis to Control Scarring in Muscle WoundsR01AR060964 · NIAMS · UNIVERSITY OF KENTUCKY · PI PULEO, DAVID A. · 2012 to 2015
$1.4M
Biodegradable Polymerized SimvastatinR21EB017902 · NIBIB · UNIVERSITY OF KENTUCKY · PI PULEO, DAVID A. · 2014 to 2015
$411k
NIAMS NIH HHS R01 AR060964NIBIB NIH HHS R21 EB017902
6 · The paper itself

Abstract

Biodegradable polyesters are commonly used as drug delivery vehicles, but their role is typically passive, and encapsulation approaches have limited drug payload. An alternative drug delivery method is to polymerize the active agent or its precursor into a degradable polymer. The prodrug simvastatin contains a lactone ring that lends itself to ring-opening polymerization (ROP). Consequently, simvastatin polymerization was initiated with 5 kDa monomethyl ether poly(ethylene glycol) (mPEG) and catalyzed via stannous octoate. Melt condensation reactions produced a 9.5 kDa copolymer with a polydispersity index of 1.1 at 150 °C up to a 75 kDa copolymer with an index of 6.9 at 250 °C. Kinetic analysis revealed first-order propagation rates. Infrared spectroscopy of the copolymer showed carboxylic and methyl ether stretches unique to simvastatin and mPEG, respectively. Slow degradation was demonstrated in neutral and alkaline conditions. Lastly, simvastatin, simvastatin-incorporated molecules, and mPEG were identified as the degradation products released. The present results show the potential of using ROP to polymerize lactone-containing drugs such as simvastatin.

Indexed as

block copolymersdrug delivery systemspolyestersring-opening polymerizationsimvastatin

Identifiers

PMID25431653
PMCPMC4242434

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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.