Effects of vagus nerve preservation and vagotomy on peptide YY and body weight after subtotal gastrectomy

Table 1 Baseline characteristics of patients in two groups

Operative procedure	Vagus nerve preservation (n = 9)	Vagotomy (n = 7)	P
Age (yr)	59.01 ± 13.12	52.74 ± 6.40	NS
Sex (male/female)	6/3	4/3	NS
Body weight (kg)	62.01 ± 11.22	63.13 ± 6.01	NS
BMI (kg/m2)	23.21 ± 2.40	24.41 ± 3.53	NS
TNM stage			NS
II	5 (55.5)	3 (42.8)
IIIa	4 (45.5)	4 (57.2)
Pathologic type			NS
Differentiated	6 (66.6)	4 (57.2)
Undifferentiated	3 (33.4)	3 (42.8)
Reconstruction			NS
Billroth-1	5 (55.5)	5 (71.4)
Roux-en-Y	4 (45.5)	2 (28.6)
Laboratory values
Peptide YY3-36 (ng/mL)	0.38 ± 0.10	0.42 ± 0.07	NS
Ghrelin (pg/mL)	693.71 ± 211.25	703.90 ± 238.89	NS
Leptin (ng/mL)	3.88 ± 4.59	5.50 ± 7.99	NS
Insulin (mIU/L)	6.36 ± 3.95	6.47 ± 4.66	NS
Growth hormone (ng/mL)	1.51 ± 2.34	1.4 ± 0.18	NS
HOMA index	1.70 ± 1.24	1.68 ± 1.38	NS
Albumin (g/dL)	3.71 ± 0.43	3.63 ± 0.52	NS
Total protein (g/dL)	6.93 ± 0.50	6.92 ± 1.04	NS
Total cholesterol (mg/dL)	204.91 ± 25.23	209.63 ± 21.11	NS
Triglyceride (mg/dL)	171.72 ± 49.21	140.41 ± 45.24	NS

Data were expressed as mean ± SD or n (%). BMI: Body mass index; TNM: Tumor, node, metastasis; HOMA: Homeostatic model assessment; NS: Not significant.