Abstract

This study was performed for the purpose of evaluation of plasma PGE2, levels in patients with gastric carcinomas. To carry out this study twenty-one gastrectomy patients with gastric carcinoma were selected. Serial plasma PGE2 levels were measured before and after operation by radioimmunoassay. Plasma PGE2 was also measured in five normal healthy volunteers or of patients with gastric ulcer. The conclusion drawn therefrom were as followed: 1) In normal healthy volunteers, plasma PGE2 level was 50.2+/-16.5 pg/ml which ws higher than that of parients with gastric ulcer, 20.7+/-15.4 pg/ml, (p<0.001). 2) In patients with diffuse type of gastric carcinoma, preoperative and postoperative plasma PGE2 levels were 25.7+/-12.1 pg/ml, and 23.1+/-8.7 pg/ml, rewpectively. In parients with intestinal type of gastric carcinoma, preoperative and postoperastive plasma PGE2 levels were 26.2+/-8.9 pg/ml and 24.1+/-11.2 pg/ml, respectively. In both types of gastric carcinoma, plasma PGE2 levels were lower than that of normal healthy volunteers and there was no significant difference compaired with the levels in patients with gastric ulcer. 3) In diffuse and intestinal types of gastric carcinoma, postoperative PGE2 levels were lower that those of preoperative state but it was not significant. 4) In early and advanced gastric carcinoma, preoperative PGE2 levels were 29.0+/-11.7 pg/ml and 24.8+/-9.9 pg/ml, respectively. There was no significant difference by the depth of invasion. From the result as mentioned above, it is concluded that plasma PGE2 levels of patients with gastric carcinoma and it is presumable that there is a factor decreasing plasma PGE2 levels in patients with gastric carcinoma or ulcer.

• Keywords: Poasma PGE2;level;Gastric carcinoma;