[Helicobacter pylori in patients with disorders of hepatobiliary system].

Aim: Detection of H. pylori in gastric mucosa, bile-excreting ducts, livertissue, and bile of patients with different disorders hepatobiliary system (HBS).

Materials And Methods: Seventy-six patients (52 females and 24 males) with following diagnoses: chronic noncalculous cholecystitis (25 patients), gallstone disease (28), liver cirrhosis (12), ischemic heart disease (control group, n = 11), admitted to hospitals in Kazan and Zelenodolsk (Republic of Tatarstan), were examined.

Involvement of protein synthesis in the reconsolidation of memory at different time points after formation of conditioned reflex freezing in mice.

The aim of the present work was to study the involvement of protein synthesis in the reconsolidation of memory at different periods of time after training. In mice trained in a conditioned reflex freezing model, memory was reactivated by a reminder combined with administration of the protein synthesis inhibitor cycloheximide. The results showed that suppression of protein synthesis on reactivation of memory 3, 6, and 24 h and 14 and 30 days after training impaired acquired conditioned reflex freezing.

[The role of protein synthesis in memory reconsolidation in different time periods after fear conditioning in mice].

We have studied the role of protein synthesis in reconsolidation of memory, activated by reminder at different time period after initial acquisition. Mice were trained in a single-trial fear conditioning task and then subjected to reminder, preceded by injection of protein synthesis inhibitor cycloheximide. It was found that this procedure impaired later memory retrieval if applied at 3, 6 and 24 h as well as 14 and 30 days after initial training.

[Insulators and interaction between long-distance regulatory elements in higher eukaryotes].

Enhancers can activate a promoter located as far as several hundred kilobases away, which is specific for transcription regulation in higher eukaryotes. Notwithstanding the vast information accumulated on transcription regulation at various levels, the mechanism of long-distance enhancer-promoter interactions is still obscure. Modern views of insulators as elements modulating enhancer-promoter interactions are reviewed.