Evidence map›Paper›PMID 26508855›Full record

ArticleInternational journal of nanomedicine2015

Design and evaluation of an intravesical delivery system for superficial bladder cancer: preparation of gemcitabine HCl-loaded chitosan-thioglycolic acid nanoparticles and comparison of chitosan/poloxamer gels as carriers.

Zeynep Ay Şenyiğit, Sinem Yaprak Karavana, Derya İlem-Özdemir, Çağrı Çalışkan, Claudia Waldner, Sait Şen, Andreas Bernkop-Schnürch, Esra Baloğlu

Open access · goldAbstract read
In one paragraph

Article in International journal of nanomedicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.5field-weighted citation impact, top 8% 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

25 citing papers in PubMed, 65 citations in OpenAlex.

  1. Review
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  8. Nanomedicine in Bladder Cancer Therapy.International journal of molecular sciences · 2024
    Review
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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

8 authors at 3 institutions in 3 countries.

Zeynep Ay ŞenyiğitFaculty of Pharmacy, Department of Pharmaceutical Technology, Ege University, Bornova, İzmir, Turkey.
Sinem Yaprak KaravanaFaculty of Pharmacy, Department of Pharmaceutical Technology, Ege University, Bornova, İzmir, Turkey.
Derya İlem-ÖzdemirFaculty of Pharmacy, Department of Radiopharmacy, Ege University, Bornova, İzmir, Turkey.
Çağrı ÇalışkanFaculty of Pharmacy, Department of Radiopharmacy, Ege University, Bornova, İzmir, Turkey.
Claudia WaldnerThioMatrix, Forschungs-Beratungs GmbH, Innsbruck, Austria.
Sait ŞenFaculty of Medicine, Department of Pathology, Ege University, Bornova, İzmir, Turkey.
Andreas Bernkop-SchnürchInstitute of Pharmacy, Department of Pharmaceutical Technology, University of Innsbruck, Innsbruck, Austria.
Esra BaloğluFaculty of Pharmacy, Department of Pharmaceutical Technology, Ege University, Bornova, İzmir, Turkey.
Ege University · TRSozialwissenschaftliche Forschung und Beratung · DEUniversität Innsbruck · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to develop an intravesical delivery system of gemcitabine HCl for superficial bladder cancer in order to provide a controlled release profile, to prolong the residence time, and to avoid drug elimination via urination. For this aim, bioadhesive nanoparticles were prepared with thiolated chitosan (chitosan-thioglycolic acid conjugate) and were dispersed in bioadhesive chitosan gel or in an in situ gelling poloxamer formulation in order to improve intravesical residence time. In addition, nanoparticle-loaded gels were diluted with artificial urine to mimic in vivo conditions in the bladder and were characterized regarding changes in gel structure. The obtained results showed that chitosanthioglycolic acid nanoparticles with a mean diameter of 174.5±3.762 nm and zeta potential of 32.100±0.575 mV were successfully developed via ionotropic gelation and that the encapsulation efficiency of gemcitabine HCl was nearly 20%. In vitro/ex vivo characterization studies demonstrated that both nanoparticles and nanoparticle-loaded chitosan and poloxamer gels might be alternative carriers for intravesical administration of gemcitabine HCl, prolonging its residence time in the bladder and hence improving treatment efficacy. However, when the gel formulations were diluted with artificial urine, poloxamer gels lost their in situ gelling properties at body temperature, which is in conflict with the aimed formulation property. Therefore, 2% chitosan gel formulation was found to be a more promising carrier system for intravesical administration of nanoparticles.

Indexed as

Drug Delivery SystemsDrug DesignAdministration, IntravesicalAntimetabolites, AntineoplasticChemistry, PharmaceuticalChitosanDeoxycytidineDrug CarriersGelsGemcitabineHumansNanoparticlesPoloxamerThioglycolatesTumor Cells, CulturedUrinary Bladder Neoplasms2-mercaptoacetateAntimetabolites, AntineoplasticChitosanDeoxycytidineDrug CarriersGelsGemcitabinePoloxamerThioglycolateschitosanchitosan-TGAgemcitabine HClintravesical administrationnanoparticlepoloxamersuperficial bladder cancer

Identifiers

PMID26508855
PMCPMC4610785
OpenAlexW1915079225

What OpenQuestion holds

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LicenceCC BY-NC
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.