Objective: The aim of this study was to evaluate the relationship between apelin-36 and oxidative parameters and Generalized Anxiety Disorder (GAD). Apelin which prevents hippocampal neuronal death is an endogenous ligand for G protein bound APJ receptors in the central nervous system. Oxidative Stress were occurred by free radicals which caused apoptosis in the hypothlamus, hippocampus and amygdala regions of the Central Nervous System (CNS).
Methods: In this study, 61 patients diagnosed generalized anxiety disorder at psychiatry polyclinic and 55 control subjects were enrolled. The Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I) and the Hamilton Anxiety Rating Scale (HARS) were used in this study and they were filled by the patients and healthy individuals. Serum apelin-36 level was measured by using an ELISA kit. Total antioxidant status (TAS) and Total Oxidant Status (TOS) in the serum was measured by an automated system. The data were analyzed by using the SPSS.
Results: It was found that serum apelin-36, TOS and Oxidative stress index (OSI) levels were significantly lower in patients’ group than controls. In addition, negative correlation was detected between apelin 36 levels and HARS scores, TOS and OSI values in patients’ group. TAS values were found as similar between the patient and control group. There was no correlation between TAS and Apelin 36 in the patient group.
Conclusion: In this study it was found that serum apelin-36, TOS and OSI levels were low in GAD. According to the results, Apelin-36 and oxidative stress may play a role in the etiopathogenesis of Generalized Anxiety Disorder.