One of the ways the endothelium controls blood flow is through the release of a chemical called nitric oxide. But nitric oxide is a double-edged sword – while it is essential in normal endothelial function (and is also involved in the central nervous system), too much can be damaging and lead to prolonged inflammation.
Dr Westermeier is exploring this complicated relationship in more detail by looking at whether the cellular mechanisms that control nitric oxide production are altered in ME/CFS.
Using blood samples obtained from the UK ME/CFS Biobank, he will assess levels of nitric oxide and the proteins involved in its production (Sirt1, eNOS and Arg1). He will also investigate whether this is altered in endothelial cells that have been exposed to blood plasma from people with ME/CFS.
The researchers hope their findings will throw new light onto the role of these complex mechanisms in ME/CFS, and possibly identify new biomarkers of endothelial dysfunction in the illness.