Joint contribution of alcohol abuse and the rs6580502 polymorphism of the SPINK1 gene to the risk of acute alcoholic pancreatitis

The main risk factor for the acute non-biliary pancreatitis is alcohol abuse. Alcohol initiates exocrine hypersecretion of the pancreas, creates the prerequisites for increasing pressure in the ducts. Enzymes activate proteolytic enzymes and cause autolysis of pancreatic cells. With an excessive accumulation of trypsin in the tissues, the digestion of the tissues of the gland by its own enzymes begins. SPINK1, a pancreatic secretory trypsin inhibitor, prevents premature activation of zymogens. Aim: to determine the contribution of the rs6580502 polymorphism of the SPINK1 gene and alcohol abuse in the development of acute pancreatitis and its complications. DNA samples obtained from 471 unrelated patients with acute non-biliary pancreatitis and 573 unrelated individuals without gastrointestinal diseases. Genotyping was performed using the PCR method with discrimination of alleles using TaqMan probes. The χ2 criterion and the odds ratio (OR) with 95% confidence intervals (CI) were used to assess the associations of alleles and genotypes of genes with the risk of developing the disease. Statistical analysis was carried out using the Statistica 6.0 software (StatSoft, USA). We found an association of the T/T SPINK1 rs6580502 genotype with an increased risk of developing acute non-biliary pancreatitis (corOR (95% CI)= 1.69 (1.22-2.33); p=0,0015R). In carriers of the TT genotype, the risk of developing SNP was increased by such risk factors as the frequency of drinking more than 2 times per week (corOR (95% CI)= 1,66(1,08-2,57); p=0,02R) and the volume of alcohol consumption more than 200 grams per week (corOR (95% CI)= 6,04(1,81-20,17); p= 0,001R). An association of the T/T genotype with an increased risk of developing edematous pancreatitis was also revealed (corOR (95% CI)= 2.10 (1.44-3.05); Р= 1×10-4 R).

acute non-biliary pancreatitis, rs6580502 polymorphism of the SPINK1 gene

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