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Controlling drug delivery kinetics from mesoporous titania thin films by pore size and surface energy

Overview of attention for article published in International Journal of Nanomedicine, July 2015
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28 Mendeley
Title
Controlling drug delivery kinetics from mesoporous titania thin films by pore size and surface energy
Published in
International Journal of Nanomedicine, July 2015
DOI 10.2147/ijn.s83005
Pubmed ID
Authors

Johan Karlsson, Saba Atefyekta, Martin Andersson

Abstract

The osseointegration capacity of bone-anchoring implants can be improved by the use of drugs that are administrated by an inbuilt drug delivery system. However, to attain superior control of drug delivery and to have the ability to administer drugs of varying size, including proteins, further material development of drug carriers is needed. Mesoporous materials have shown great potential in drug delivery applications to provide and maintain a drug concentration within the therapeutic window for the desired period of time. Moreover, drug delivery from coatings consisting of mesoporous titania has shown to be promising to improve healing of bone-anchoring implants. Here we report on how the delivery of an osteoporosis drug, alendronate, can be controlled by altering pore size and surface energy of mesoporous titania thin films. The pore size was varied from 3.4 nm to 7.2 nm by the use of different structure-directing templates and addition of a swelling agent. The surface energy was also altered by grafting dimethylsilane to the pore walls. The drug uptake and release profiles were monitored in situ using quartz crystal microbalance with dissipation (QCM-D) and it was shown that both pore size and surface energy had a profound effect on both the adsorption and release kinetics of alendronate. The QCM-D data provided evidence that the drug delivery from mesoporous titania films is controlled by a binding-diffusion mechanism. The yielded knowledge of release kinetics is crucial in order to improve the in vivo tissue response associated to therapeutic treatments.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 28 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 28 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 11 39%
Student > Master 5 18%
Researcher 5 18%
Student > Doctoral Student 1 4%
Professor > Associate Professor 1 4%
Other 0 0%
Unknown 5 18%
Readers by discipline Count As %
Chemistry 7 25%
Materials Science 5 18%
Chemical Engineering 4 14%
Biochemistry, Genetics and Molecular Biology 2 7%
Engineering 2 7%
Other 3 11%
Unknown 5 18%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 31 July 2015.
All research outputs
#6,562,122
of 8,613,749 outputs
Outputs from International Journal of Nanomedicine
#1,432
of 1,891 outputs
Outputs of similar age
#161,109
of 232,104 outputs
Outputs of similar age from International Journal of Nanomedicine
#132
of 143 outputs
Altmetric has tracked 8,613,749 research outputs across all sources so far. This one is in the 13th percentile – i.e., 13% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,891 research outputs from this source. They receive a mean Attention Score of 2.5. This one is in the 15th percentile – i.e., 15% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 232,104 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 16th percentile – i.e., 16% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 143 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.