Table 1: Acute and chronic unpredictable stress-induced alterations in dopamine, prostaglandin E2 levels, histopathological changes, and mean ulcer score in gastric tissues.

Parameters in gastric tissues Models Nonstress Acute stress Chronic unpredictable stress Dopamine levels 0 ↓ ↓↓ Prostaglandin E2 0 0 ↓ Histopathological changes 0 ↑ ↑↑ Mean ulcer score 0 ↑ ↑↑ Plasma corticosterone 0 ↑↑ ↑

This information was obtained from our previous paper [39]. Plasma corticosterone was shown as stress marker. Symbols represent the following: 0: no effect, ↓: small decrease, ↓↓: large decrease, ↑: small increase, and ↑↑: large increase.