Abstract
The ability to quantify partial pressure of oxygen (pO2) is of primary importance for studies of metabolic processes in health and disease. Here, we present a protocol for imaging of oxygen distributions in tissue and vasculature of the cerebral cortex of anesthetized and awake mice. We describe in vivo two-photon phosphorescence lifetime microscopy (2PLM) of oxygen using the probe Oxyphor 2P. This minimally invasive protocol outperforms existing approaches in terms of accuracy, resolution, and imaging depth.
For complete details on the use and execution of this protocol, please refer to Esipova et al. (2019).
Two-photon phosphorescence imaging of Oxyphor 2P allows for oxygen measurement in vivo
Oxygen imaging can be performed in anesthetized or awake, behaving mice
Intravenous injection enables oxygen imaging in the vasculature
Cisterna magna injection enables extra- and intravascular oxygen imaging in the brain
Collapse