Evidence map›Paper›PMID 19384468›Full record

ArticlePharmaceutical research2009

Calcein release from polymeric vesicles in blood plasma and PVA hydrogel.

S Litvinchuk, Z Lu, P Rigler, T D Hirt, W Meier

Abstract read
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Article in Pharmaceutical research, 2009. 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
2.0field-weighted citation impact, top 14% of its field
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, 36 citations in OpenAlex.

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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 at 2 institutions in 1 country.

S LitvinchukDepartment of Chemistry, University of Basel, Klingelbergstr. 80, 4056 Basel, Switzerland.
Z Lu
P Rigler
T D Hirt
W Meier
University of Basel · CHUnion Bank of Switzerland · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe main goal of this study was to show the long-term stability of vesicles from poly(2-methyl oxazoline-block-polydimethylsiloxane-block poly(2-methyl oxazoline) (PMOXA-PDMS-PMOXA) in PBS, blood plasma and the feasibility to use these vesicles for drug release from PVA hydrogels.

methodsThe vesicle formation properties and loading efficiency was evaluated using fluorescent dyes. The stability of the vesicles was evaluated in buffer at pH 7 at room temperature and in 50% blood plasma at 37 degrees C. The calcein loaded vesicles were dispersed in a UV crosslinked PVA hydrogel. The stability of the vesicles in the hydrogel was observed over one week, before the vesicles were ruptured with Triton X-100.

resultsThe vesicles are very stable in buffer, blood plasma, and the PVA hydrogel. In plasma 50% of the calcein is released in 48 h in the presence of sodium azide. The vesicles can be evenly dispersed in PVA and are stable. The release can be triggered and the calcein diffuses afterwards quickly throughout the gel.

conclusionPolymeric vesicles can be used as diffusion barrier in hydrogels for the controlled release of water soluble drugs.

Indexed as

AnimalsCross-Linking ReagentsDiffusionFluoresceinsHydrogelsNanocapsulesOxazolesPlasmaPolymersPolyvinyl AlcoholSolventsUltraviolet RaysCross-Linking ReagentsFluoresceinsfluorexonHydrogelsNanocapsulesOxazolespoly(2-methyl oxazoline)-block polydimethylsiloxane-block-poly(2-methyl oxazoline)PolymersPolyvinyl AlcoholSolvents

Identifiers

PMID19384468
OpenAlexW2084427897

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.