Abstract
We studied the association of expression of CDX2, CK20, CK7 proteins with familial predisposition to stomach cancer in schoolchildren with gastritis and its activity. Gastroscopy with biopsy of the gastric mucosa was performed in 89 schoolchildren aged 7-17 years with gastrointestinal complaints. The morphological study included the diagnosis of gastritis (Sydney classification) and the presence of Helicobacter pylori. The expression of CDX2, CK20, and CK7 was evaluated immunohistochemically. In children with familial predisposition to stomach cancer, the expression of CK20 in the stomach body was significantly increased (p=0.0225). In addition, the expression of CK20 (p=0.0979) and CDX2 (p=0.0849) tended to insrease in the antral compartment. No significant differences in the expression of CK7 in the gastric antrum and body were found. Some features of the expression of CDX2, CK20, and CK7 proteins in children with family predisposition to stomach cancer were revealed.
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