The influence of Helicobacter pylori on the level of endotheline-1 and nitrogen oxide in the blood of children with the duodenal ulcer

Abstract

The most serious pathology of the of gastrointestinal tract in children remains duodenal ulcer (DU). Interesting is the study of the role of endothelin-1 and nitrogen oxide in the formation of DU.The aim. To evaluate the nature of changes in the level of nitrogen oxide (NO) and endothelin-1 (Et-1) in the blood of children with H pylori-associated DU.Methods. A single-center study was conducted in 42 children with DU aged 6–18 years and 20 children comparison group. Diagnostics of H. pylori was performed primary endoscopy and 4 weeks after the end of treatment. Blood samples were collected in each visit to measure plasma Et-1 using an enzyme immunoassay kit and NO (nitrate/nitrite) levels Golikov's method.Results. In 37 (92.5%) the ulcers went through re-epithelialization, while successful eradication of H. pylori was achieved in 32 people (80%). The NO level in the blood plasma of the children of the main group was 9.78 ± 1.13 mmol/l, after treatment –11.09 ± 1.2 mmol/l. After eradication of H. pylori, the level of Et-1 decreased from 2.39 ± 0.08 to 1.14 ± 0.07 pg / ml.Conclusion. Levels of endothelin-1 (Et-1) and nitrogen oxide (NO) in children with duodenal ulcer vary depending on the stage of the disease. After H-pylori eradication, ulcer defect healing is associated with decreased of Et-1 inplasma and increased NO activity.