Epidemiology Helicobacter pylori infection in children in the Tyva Republic (Russia).

Background: Tyva Republic is a small mountainous area at the geographical center of Asia in southern Siberia, with a high incidence of gastric cancer.

Aim: We examined the prevalence of H. pylori and associated risk factors among children in Tyva.

Biomarkers CDX2, CK20, CK7 in Schoolchildren with Gastritis in the Realization of Familial Predisposition of Stomach Cancer.

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.

Efficiency of Very Low Doses of Antibodies to S100 Protein in the Complex Therapy of Functional Dyspepsia in Children.

We showed the data on clinical efficiency of low doses of antibodies to brain-specific protein S100 in the complex therapy of schoolchildren with painful variant of functional dyspepsia syndrome. Significant positive effects of the substance on the dynamics of epigastric pain, in particular, its duration, were found. The maximum clinical effect was observed in children with emotional disorders (~1/3 of all examined children).

[Prevalence of H. pylori CagA strain and characteristics of associated gastritis in schoolchildren with dyspepsia syndrome in Tyva Republic].

Aim: To study the prevalence of H. pylori CagA strain and the activity of associated gastritis in schoolchildren of Tyva Republic (Russia).

Materials And Methods: The cohorts had been formed out of 1064 native and alien schoolchildren picked up by random in Tyva Republic in the ages from 7 to 17 years.

Electron acceleration by few-cycle laser pulses with single-wavelength spot size.

Generation of relativistic electrons from the interaction of a laser pulse with a high density plasma foil, accompanied by an underdense preplasma in front of it, has been studied with two-dimensional particle-in-cell (PIC) simulations for pulse durations comparable to a single cycle and for single-wavelength spot size. The electrons are accelerated predominantly in forward direction for a preplasma longer than the pulse length. Otherwise, both forward and backward electron accelerations occur.