Autonomic dysfunction in patients with irritable bowel syndrome evidenced by alterations of salivary alpha-amylase secretion.
BACKGROUND: Patients with irritable bowel syndrome (IBS) frequently present with alterations of autonomic activity, especially higher sympathetic activity. Salivary alpha-amylase (sAA) has been implicated as a non-invasive biomarker to reflect the sympathetic activity. Thus, the current study aimed to determine if alterations o.....