Lower activity of salivary alpha-amylase in youths with depression.

Stress : the International Journal on the Biology of Stress
Daniela JezovaNatasa Hlavacova

Abstract

Measurement of basal and stress-induced salivary alpha-amylase activity may help to understand autonomic nervous system disturbance in mental disorders. The potential sympathetic nervous system dysregulation in children and adolescent psychopathologies is mostly unknown. The present study was aimed to test the hypothesis that salivary alpha-amylase activity is higher in youths diagnosed with depression than in healthy subjects considering a part of the daily rhythm of enzyme activity and its morning to midday slope. A total of 30 children aged 15 ± 0.46 years (15 patients with depression, 4 boys, 11 girls, and 15 sex- and age-matched healthy controls) participated in the study. Two saliva samples were collected from each subject to measure activity of alpha-amylase in the morning and midday. The results of the present study revealed that the midday but not morning alpha-amylase activity was lower in patients with depression than in healthy controls. The diurnal increase in enzyme activity present in healthy subjects was absent in patients. The children and adolescents with depression exhibited flatter morning to midday slopes of alpha-amylase activity. In conclusion, the present results indicate a disturbance of alpha-amylase d...Continue Reading

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Citations

Dec 19, 2020·Stress : the International Journal on the Biology of Stress·Daniela Jezova, James P Herman

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