Evidence map›Paper›PMID 25690616›Full record

ArticleJournal of materials science. Materials in medicine2015

Nanoporous silica nanoparticles as biomaterials: evaluation of different strategies for the functionalization with polysialic acid by step-by-step cytocompatibility testing.

Sina Williams, Anne Neumann, Imke Bremer, Yi Su, Gerald Dräger, Cornelia Kasper, Peter Behrens

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In one paragraph

Article in Journal of materials science. Materials in medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.1field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 42 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

7 authors at 2 institutions in 2 countries.

Sina WilliamsCluster of Excellence "Hearing4all", Institut für Anorganische Chemie, Leibniz Universität Hannover, Callinstraße 9, 30167, Hannover, Germany.
Anne Neumann
Imke Bremer
Yi Su
Gerald Dräger
Cornelia Kasper
Peter Behrens
Leibniz University Hannover · DEBOKU University · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nanoporous silica materials have become a prominent novel class of biomaterials which are typically applied as nanoparticles or thin films. Their large surface area combined with the rich surface chemistry of amorphous silica affords the possibility to equip this material with variable functionalities, also with several different ones on the same particle or coating. Although many studies have shown that nanoporous silica is apparently non-toxic and basically biocompatible, any surface modification may change the surface properties considerably and, therefore, the modified materials should be checked for their biocompatibility at every step. Here we report on different silane-based functionalization strategies, firstly a conventional succinic anhydride-based linker system and, secondly, copper-catalyzed click chemistry, to bind polysialic acid, a polysaccharide important in neurogenesis, onto nanoporous silica nanoparticles (NPSNPs) of MCM-41 type. At each of the different modification steps, the materials are characterized by cell culture experiments. The results show that polysialic acid can be immobilized on the surface of NPSNPs by using different strategies. The cell culture experiments show that the kind of surface immobilization has a strong influence on the toxicity of the material versus the cells. Whereas most modifications appear inoffensive, NPSNPs modified by click reactions are toxic, probably due to residues of the Cu catalyst used in these reactions.

Indexed as

Biocompatible MaterialsNanoparticlesNanoporesClick ChemistryHep G2 CellsHumansMicroscopy, Electron, ScanningPowder DiffractionSialic AcidsSilicon DioxideSpectrophotometry, AtomicSpectrophotometry, InfraredBiocompatible Materialspolysialic acidSialic AcidsSilicon Dioxide

Identifiers

PMID25690616
OpenAlexW1996421129

What OpenQuestion holds

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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.