AN EXPLORATORY STUDY OF PHYSIOLOGICAL AND BIOCHEMICAL PARAMETERS TO IDENTIFY SIMPLE, ROBUST AND RELEVANT BIOMARKERS FOR THERAPEUTIC INTERVENTIONS FOR PTSD: STUDY RATIONALE, KEY ELEMENTS OF DESIGN AND A CONTEXT OF WAR IN UKRAINE

Introduction. The incidence of post-traumatic stress disorder (PTSD) is increasing due to war in Ukraine is of growing importance as this disorder is a serious risk factor for alcohol/drug abuse, depression, suicide and functional dysregulation of internal organs, in particular cardiovascular, endocrine, immune systems. PTSD can also lead to social inadaptation in family and at work. This makes PTSD a very important social problem in Ukraine that causes significant economic damage, since most of the PTSD patients are young and in working age. Objectives. The purpose of this paper is to describe the rationale, key elements of design, methodology and future prospects of the ongoing project “Exploratory study of health related physiological and biochemical parameters to identify simple, robust and relevant biomarkers for therapeutic interventions for PTSD patients”. Methods. Short time ECG records (5 minutes in supine position and 6 minutes in orthostatic test) recorded by “CARDIOLAB” (Kharkiv, Ukraine) digital ECG device with software to analyze HRV was used to calculate time-domain and frequency-domain parameters of HRV. Results. The pattern of HRV changes indicates suppression of parasympathetic activity, low overall spectral power and dominance of sympathetic branch of autonomic nervous system in participants with PTSD. Conclusions. PTSD has no effective treatment so far and the best clinical practices rarely reach efficacy of 50%. The realization of the exploratory clinical study described in this paper will provide insights in the mechanisms underlying systemic consequences of PTSD and will build the evidence enabling clinical trial(s) for studying treatment intervention for patients with PTSD.