Table 1.

Time course of changes in plasma levels of intestinal hormones after abdominal surgery in rats

	Hormone Plasma Level, pg/ml
	GLP-1		PYY		PP
Time point, h	Sham	Surgery	Sham	Surgery	Sham	Surgery
0	39.6 ± 3.4	42.3 ± 3.5	75.0 ± 7.4	78.1 ± 13.5	66.0 ± 9.7	80.0 ± 10.5
2	37.6 ± 2.6	36.8 ± 3.7	65.0 ± 7.0	41.9 ± 3.6*	55.5 ± 8.4	50.4 ± 7.6
5	37.4 ± 4.9	39.9 ± 2.5	73.4 ± 13.8	51.8 ± 4.6	64.2 ± 11.4	97.3 ± 8.1*
24	37.2 ± 5.3	27.8 ± 1.8	110.4 ± 45.2	113.2 ± 26.1	105.1 ± 10.2	100.9 ± 18.2

Rats were fasted overnight and underwent abdominal surgery consisting of laparotomy and cecal palpation (1 min) or anesthesia alone (sham) and levels of glucagon-like peptide 1 (GLP-1), peptide YY (PYY), and pancreatic polypeptide (PP) were assessed before, and at 2, 5, 7, and 24 h postsurgery. Data are presented as means ± SE of 5 rats/group;

^*P < 0.05 vs. sham.