Association of serum lipids and apolipoprotein E gene polymorphism with the risk of colorectal adenomas.
OBJECTIVE
To investigate the relationship of serum lipids and apolipoprotein (apoE) gene polymorphism to colorectal adenomas.


METHODS
This study took place in the Department of Gastroenterology, Renmin Hospital of Wuhan University, PR China from June 2003 to March 2005. Ninety-eight patients with colorectal adenomas and 40 healthy subjects were enrolled, and their serum levels of triglyceride (TG), total cholesterol (TC), high density lipoprotein cholesterol (HDL-C), and low density lipoprotein cholesterol (LDL-C) were determined. The apoE gene polymorphism was identified by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP).


RESULTS
Serum TC levels of colorectal adenomas group (5.32 +/- 0.85 mmol/L), distal colorectal adenomas group (5.58 +/- 0.63 mmol/L), and villous adenoma group (5.49 +/- 0.69 mmol/L) were higher than the control group (4.28 +/- 0.62 mmol/L, p=0.016), proximal colorectal adenomas group (4.82 +/- 0.58 mmol/L, p=0.038) and non-villous adenoma group (4.76 +/- 0.58 mmol/L, p=0.03). Serum HDL-C levels of colorectal adenomas group (1.39 +/- 0.25 mmol/L) were lower than the control group (1.51 +/- 0.29 mmol/L) (p=0.035). Serum lipids levels of each genotype in colorectal adenomas group were not statistically significant. Apolipoprotein E3/E4 genotypic frequency in colorectal adenomas group (7.1%) was lower than the control group (17.5%) (p=0.012).


CONCLUSIONS
The findings suggest that altered lipid metabolism may be differentially associated with colorectal adenomas and the persons with apoE E3/E4 genotype have lower risk suffering from colorectal adenomas than those with other genotypes.
Zhongyin
Zhou
Z
Department of Gastroenterology, Renmin Hospital, Wuhan University, HuBei, Peoples Republic of China.
Hesheng
Luo
L
Jun
Liu
L
Jihong
Chen
C
D000236:Adenoma / Q000097:blood* / Q000235:genetics*; D001057:Apolipoproteins E / Q000235:genetics*; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D015179:Colorectal Neoplasms / Q000097:blood* / Q000235:genetics*; D005260:Female; D006801:Humans; D008055:Lipids / Q000097:blood*; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D014280:Triglycerides / Q000097:blood
D001057:Apolipoproteins E; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D008055:Lipids; D014280:Triglycerides; D002784:Cholesterol