Abstract
Changes of noradrenaline (NA) and prostaglandin (PG) E2 in gastric mucosa and gastric wall blood flow (GWBF) were investigated after stress load in rats with obstructive jaundice. We found that water immersion and restraint stress more easily increased the ulcer index and decreased GWBF, corresponding to a decrease of the NA and PGE2 contents in the gastric mucosa, as the duration of jaundice increased. Administration of PGE2 reduced the increase of the ulcer index and the decrease of the GWBF and NA contents in the gastric mucosa. It is suspected that the rapid decrease of NA and PGE2 is connected with the rapid decrease of GWBF after stress load in obstructive jaundice, and we reached the hypothesis that both PGE2 and NA mutually regulate local GWBF.
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