Jump to main content
Jump to site search

Issue 2, 2011
Previous Article Next Article

In vivo sodium concentration continuously monitored with fluorescent sensors

Author affiliations


Sodium balance is vital to maintaining normal physiological function. Imbalances can occur in a variety of diseases, during certain surgical operations or during rigorous exercise. There is currently no method to continuously monitor sodium concentration in patients who may be susceptible to hyponatremia. Our approach was to design sodium specific fluorescent sensors capable of measuring physiological fluctuations in sodium concentration. The sensors are submicron plasticized polymer particles containing sodium recognition components that are coated with biocompatible poly(ethylene) glycol. Here, the sensors were brought up in saline and placed in the subcutaneous area of the skin of mice by simple injection. The fluorescence was monitored in real time using a whole animal imager to track changes in sodium concentrations. This technology could be used to monitor certain disease states or warn against dangerously low levels of sodium during exercise.

Graphical abstract: In vivo sodium concentration continuously monitored with fluorescent sensors

Back to tab navigation

Publication details

The article was received on 31 Mar 2010, accepted on 17 Sep 2010 and first published on 19 Nov 2010

Article type: Technical Innovation
DOI: 10.1039/C0IB00020E
Citation: Integr. Biol., 2011,3, 142-148

Search articles by author