[Immunohistochemical localization of p53 protein in smoking patients with chronic pancreatitis].

Epidemiological studies show that smokers are at a significantly higher (70%) risk of getting affected by chronic pancreatitis and tumours of pancreas than non-smokers. The aim of the study was to assess the effect of cigarette smoking on the expression of gene p53 in pancreas by defining immunohistochemical localization of p53 protein in tissue specimens of the pancreases derived from healthy persons and smoking and non-smoking patients with diagnosed chronic pancreatitis (CP). Patients underwent surgery in which tissue material was collected. Immunohistochemical localization of 53 protein in paraffin tissue specimens of the pancreas was performed using the LSAB2-HRP visual test (DAKO K0673) with monoclonal p53 protein (DAKO N1581) antibodies. Exposure to tobacco smoke was assessed by determining cotinine in the patients' serum using the ELISA method. The study revealed a expression of p53 protein in smoking CP patients. In non-smoking patients and healthy persons wasn't showed expression of protein. Smoking patients above the twenty cigarettes for day showed significantly higher expression of p53 protein in the pancreas compared to smoking patients less. Cigarette smoking increases the expression p53 protein in pancreas of smoking patients with chronic pancreatitis. Impairment of the gene p53 in pancreas is frequently manifested by complications in pancreatitis resulting among others from long-term smoking, and conducted by tumour proliferation.