Related Experiment Video
Updated: Mar 17, 2026
12:48
Microperfusion Technique to Investigate Regulation of Microvessel Permeability in Rat Mesentery
Published on: September 12, 2015
10.2K
The influence of silica nanoparticles on small mesenteric arterial function
Ali Shukur1, Debra Whitehead2, Alexander Seifalian3
1School of Healthcare Science, Faculty of Science & Engineering, Manchester Metropolitan University, Manchester, UK.
Nanomedicine (London, England)
|August 3, 2016
Summary
Silica nanoparticles (SiNPs) can affect small artery function, particularly endothelial-dependent dilation. Safe clinical use requires understanding SiNP dosage effects on arterial responses.
Area of Science:
- Nanomaterials Science
- Vascular Biology
- Toxicology
Background:
- Silica nanoparticles (SiNPs) are increasingly used in biomedical applications.
- Understanding their impact on physiological systems, like vascular function, is crucial.
Purpose of the Study:
- To investigate the effects of SiNPs on small arterial function.
- To assess both ex vivo and in vivo responses to SiNPs.
Main Methods:
- Fabrication of mono-dispersed dye-encapsulated SiNPs (approx. 98 nm).
- Assessment of vasoconstrictor and vasodilator responses in mesenteric arteries.
- Evaluation of SiNP influence under static, flow, and in vivo conditions.
Main Results:
- SiNPs attenuated endothelial-dependent dilator responses ex vivo under static conditions.
- Attenuation was concentration-dependent and less pronounced under flow or in vivo.
- Pharmacological studies indicated potential interference with the endothelial-dependent hyperpolarizing factor pathway.
Conclusions:
- SiNP exposure can alter small arterial function, with effects varying by condition.
- Understanding dosage-dependent SiNP influence is key for safe clinical application.
- Further research into SiNP-vasculature interactions is warranted.
