[The study of the relationship between interleukin gene polymorphism and the morbidity of patients with acute pancreatitis].
OBJECTIVE
To explore interleukin-1 beta (IL-1 beta) and IL-6 gene polymorphism, and investigate the relationship between their gene polymorphism and the morbid state of patients with acute pancreatitis (AP).


METHODS
The polymorphism of IL-1 beta gene 511C/T and IL-6 gene 634C/G site was analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in patients (74 patients) with AP, including mild acute pancreatitis (MAP, 36 patients) and severe acute pancreatitis (SAP, 38 patients), and also a group of normal control (78 patients). The plasma concentrations of IL-1 beta and IL-6 were measured by enzyme linked immunosorbent assay (ELISA). The patients with SAP were divided into groups on the basis of different genotypes, and the clinical data were compared among different groups.


RESULTS
The plasma levels of IL-1 beta and IL-6 in patients with AP were significantly higher than normal control group [IL-1 beta: (13.16+/-2.82) ng/L vs. (6.21+/-1.57) ng/L; IL-6: (84.86+/-32.92) ng/L vs. (9.95+/-2.49) ng/L, both P<0.05]. There was no statistical significance between IL-1 beta gene 511 site and IL-6 gene 634 site genotype or allele frequency between the patients with AP and the normal control. In patients with SAP, IL-1 beta gene 511 site T/T genotype and T allele frequency were significantly higher than that of MAP group (both P<0.05). There was no statistically significant difference in plasma levels of IL-1 beta between C/C group and C/T+T/T group, and the plasma levels of IL-6 in patients with IL-6 gene 634 site C/G were significantly higher than C/C group [(97.23+/-35.49) ng/L vs. (72.14+/-24.55) ng/L, P<0.05]. In patients with SAP, the scores of clinical evaluation in IL-1 beta gene 511 site C/T+T/T group and IL-6 gene 634 site C/G group were significantly higher than that in IL-1 beta gene 511 site C/C group and IL-6 gene 634 site C/C group (all P<0.05).


CONCLUSIONS
IL-1 beta gene 511 site C/T and IL-6 gene 634 site C/G polymorphism may be genetic susceptibility factors for exacerbation of AP.
Chen
Xian-qiang
XQ
Department of General Surgery, Union Hospital, Fujian Medical University, Fuzhou 350001, Fujian, China.
Huang
He-guang
HG
Zhou
Yi-nong
YN
Li
Yun
Y
Chen
Yan-chang
YC
D000208:Acute Disease; D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D053583:Interleukin-1beta / Q000097:blood / Q000235:genetics*; D015850:Interleukin-6 / Q000097:blood / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D010195:Pancreatitis / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide; D055815:Young Adult
C508600:IL6 protein, human; D053583:Interleukin-1beta; D015850:Interleukin-6