This monocentric pilot study aimed to assess whether there are significant changes in hair cortisol levels and cognitive functioning at baseline and after 3 weeks of hospitalisation in older palliative care patients, and to ascertain whether hair cortisol can be used as a pertinent stress biomarker in this population. Hair cortisol concentration levels were measured with the use of an enzyme-linked immunosorbent assay (ELISA), while cognitive functions were assessed by using 16-point Mini-Mental State Examination 2 (MMSE-2): brief version. A statistically significant difference in mean hair cortisol levels at the start of the hospitalisation was found when compared to the 3-week follow-up (p=0.007). No statistically significant differences were observed regarding MMSE-2 scores using the same time points. These results have direct clinical implications and set the stage for further research endeavours in the field.
Keywords: biomarker; cognitive decline; hair cortisol; palliative care; stress.