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Department of *Nursing,
Anesthesiology, and
First Department of Physiology, Hirosaki University School of Health Sciences, Japan
Address correspondence and reprint requests to Kazuyoshi Hirota, MD, FRCA, Department of Anesthesiology, Hirosaki University School of Medicine, Hirosaki 0368563, Japan. Address e-mail to masuika{at}cc.hirosaki-u.ac.jp.
Measurement of stress hormones is a common objective method for assessment of mental stress. However, the stress of blood sampling alone may also increase stress hormone levels. In the present study, we sampled salivary biomarkers from healthy volunteers under noninvasive conditions and determined their efficacy to assess mental stress. Specifically, we examined the relationship between State Anxiety Inventory score (STAI-s) in subjects exposed to arithmetic stress and salivary chromogranin-A,
-amylase, or cortisol. The STAI-s was significantly correlated to salivary
-amylase (r = 0.589; P < 0.01) but not to salivary chromogranin-A or cortisol. Therefore, salivary
-amylase is a useful indicator of psychosocial stress.
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