Comparative evaluation of immune response after laparoscopical and open total mesorectal excisions with anal sphincter preservation in patients with rectal cancer

Table 5 Changes of CD3⁺ CD56⁺ T lymphocyte count, CD3^-CD56⁺ NK count, and serum immunoglobulin after surgery in two groups (mean ± SD)

	LTME n = 20	OTME n = 25	P value
CD3+ CD56+ T lymphocyte (%)	-0.79 ± 3.83	0.42 ± 2.09	0.214
CD3- CD56+ NK (%)	-7.23 ± 11.33	-9.21 ± 13.93	0.609
IgG (g/L)	-2.56 ± 2.14	-1.81 ± 2.10	0.248
IgM (mg/L)	-252.35 ± 392.94	-282.72 ± 356.75	0.787
IgA (mg/L)	-506.15 ± 912.24	-252.20 ± 396.28	0.216

Numbers listed were the differences of the values of CD3⁺ CD56⁺ T lymphocyte count, CD3^- CD56⁺ NK count, and serum IgG, IgM, IgA on the fifth postoperative day subtracted those before operation, respectively.