Influence of Humoral Factors on Hemostatic Properties of Blood In Vitro in Rats.

An important role in the implementation of many physiological and pathological processes is played by the functional state of the components of the hemostasis system, the activity of which is largely determined by the influence of various humoral factors. We studied the effects of lactate, nitric oxide, and sodium glutamate on aggregation activity of platelets and coagulation properties of rat plasma in vitro. The most pronounced effect was produced by lactic acid, which manifested in a dose-dependent decrease in the parameters of ADP-induced platelet aggregation and a two-phase change in blood coagulability with progressive acidification of the medium.

FIRST MOLECULAR IDENTIFICATION OF THE TULAREMIA AGENT IN THE TICKS IXODES TRIANGULICEPS BIR. IN RUSSIA.

The ticks Ixodes trianguliceps (140 nymph pool and 211 adults) collected from small forest mammals in the forests of the Middle Urals (Chusovskoy district of the Perm Region) were tested using real-time PCR for the presence of Francisella tularensis DNA. Using the target gene 16S rRNA, the locus size 1165-1170 bp Francisella DNA was detected in 12 adults and 4 pools of nymphs. DNA-positive samples from 17 individuals from 128 adults and in 16 of 89 nymph pools were additionally detected by amplification of a shorter locus of the same gene (221-222 bp).

[THE EPIZOOTIC AND EPIDEMIC ACTIVITY OF NATURAL TULAREMIA FOCI OF DIFFERENT LANDSCAPE EPIDEMIOLOGICAL TYPES IN 2009-2014].

Objective: to assess the present state of the natural tularemia foci of different landscape epidemiological types, by using individual focal areas as an example.

Materials And Methods: Epizootological monitoring and epidemiological analysis were conducted in the areas of natural tularemia foci of tundra (Wrangel Island), meadow-field (Central Federal District of the Russian Federation), flood-swamp (Arkhangelsk Region, Khanty-Mansi Autonomous District), and steppe (Mongolii) types. Small mammals (organs, blood), tularemia patients' sera, and environniental objects were examined.

[REAL TIME POLYMERASE CHAIN REACTION IN TULAREMIA LABORATORY DIAGNOSTICS].

Aim: Enhancement of tularemia laboratory diagnostics by F. tularensis DNA determination in blood sera of patients using real time polymerase chain reaction (RT-PCR).

Materials And Methods: 39 blood sera of patients obtained during transmissive epidemic outbreak of tularemia in Khanty-Mansiysk in 2013 were studied in agglutination reaction, passive hemagglutination, RT-PCR.

[The molecular and genetic characterization of Francisella tularensis strains of different taxonomic status and virulence].

Typing of Francisella strains collection by means of PCR on the basis of tul4 and RDI genes was carried out. The identification of the species and subspecies of the 112 strains of Francisella tularensis was reashed. The PCR on DNA-targets loci of type IV pili genes: pilA, pilE2, pilE3, pilE4, pilE5, pilF, pilT, pilD and pilQ for differentiation of F.