OBJECTIVETo evaluate the effects of perioperative total parenteral nutrition on cyclin D1, recurrence and metastasis of colorectal cancer cells.

METHODSA total of 120 patients with colorectal carcinoma were randomly divided into two groups, namely group A(total parenteral nutrition, TPN,60 cases) and group B(non total parenteral nutrition, NTPN, 60 cases). In group A, the patients were given with TPN(including glucose, intralipid, amino acid, and vitamins, etc.) for 10 days perioperation (7 days preoperatively and 3 days postoperatively). In group B, the patients did not receive any nutrition support perioperative nutrition support. The samples were obtained by colonoscopy preoperatively or during operation. Apoptosis was detected by terminal deoxynucleotidyl transferase-mediated nick end labeling (TUNEL) technique,expression of proliferating cell nuclear antigen (PCNA) by immunohistochemical staining, and the expression of cyclin D1 by in situ hybridization. The apoptotic index (AI), the proliferating index (PI), and the expression of cyclin D1 were calculated perioperatively and postoperatively.

RESULTSAfter perioperative nutrition support, the expression rates of cyclin D1, PI and AI in group A and group B were (35.23+/-5.12)% and (37.53+/-5.31)%, (7.21+/-2.56)% and (8.75+/-3.84)%, (53.45+/-7.74)% and (56.74+/-8.02)% respectively. There were no significant difference of PI, AI and the expression of cyclin D1(all P>0.05) between two groups. The 3-year recurrent rates in two groups were 16.7% and 15.0%( P>0.05).

CONCLUSIONPerioperative TPN can not promote proliferation and apoptosis of carcinoma cells, and has no significant impact on the expression of cyclin D1, recurrence or metastasis of colorectal cancer.