Preventive effect of gelatinizedly-modified chitosan film on peritoneal adhesion of different types

Table 1 Comparison of peritoneal adhesive grades between experimental and control subgroups within each group

Group	Control group (n = 10)					Experimental group (n = 10)					U	P
	0	I	II	III	IV	0	I	II	III	IV
Group A: sham-operation
2 wk	9	1	0	0	0	10	0	0	0	0	45.000	0.317
4 wk	10	0	0	0	0	9	1	0	0	0	45.000	0.317
Group B: wound-induced adhesion
2 wk	0	5	4	1	0	6	3	1	0	0	14.500	0.005
4 wk	0	5	5	0	0	7	3	0	0	0	7.500	0.001
Group C: purified talc-induced adhesion
2 wk	0	0	1	3	6	0	0	1	2	7	45.500	0.687
4 wk	0	0	1	4	5	0	0	0	4	6	43.000	0.547
Group D: vascular ligation-induced adhesion
2 wk	0	4	4	2	0	3	6	1	0	0	18.000	0.009
4 wk	1	4	4	1	0	5	4	1	0	0	21.500	0.023
Group E: infection-induced adhesion
2 wk	0	0	1	4	5	0	4	5	1	0	5.500	0.001
4 wk	0	0	1	5	4	0	6	4	0	0	2.000	< 0.001

Table 2 Comparison of OHP levels between experimental and control subgroups within each group (μg/mg pr)

Group	Control group (n= 10)	Experimental group (n = 10)	t	P
Group A: sham-operation
2 wk	0.137 ± 0.026	0.141 ± 0.028	0.331	0.737
4 wk	0.150 ± 0.035	0.132 ± 0.031	1.217	0.225
Group B: wound-induced adhesion
2 wk	0.285 ± 0.041	0.199 ± 0.026	5.602	< 0.001
4 wk	0.276 ± 0.038	0.183 ± 0.034	5.768	< 0.001
Group C: purified talc-induced adhesion
2 wk	0.378 ± 0.043	0.395 ± 0.044	0.874	0.387
4 wk	0.367 ± 0.041	0.370 ± 0.032	0.182	0.853
Group D: vascular ligation-induced adhesion
2 wk	0.274 ± 0.040	0.216 ± 0.036	3.408	0.004
4 wk	0.281 ± 0.047	0.211 ± 0.044	3.438	0.003
Group E: infection-induced adhesion
2 wk	0.371 ± 0.040	0.259 ± 0.039	6.34	< 0.001
4 wk	0.355 ± 0.029	0.242 ± 0.045	6.675	< 0.001