[Polymorphism of the myogens locus in some representatives of sturgeons (Acipenseridae)].

This study investigates muscle proteins in Russian (Acipenser gueldensiaedtii Brandt), Siberian (Acipenser baerii Brandt), and Amur (Acipenser shrencki Brandt) sturgeons using the method of polyacrylamide gel electrophoresis. A group of fractions, which is presumably the product of a polyallelic duplicated MY-1* locus, is recorded among the general pool of proteins. Data from densitometric analysis makes it possible to put forward a hypothesis about an eight-gene determination of this system of proteins. The highest heterogeneity and polymorphism was revealed in the Russian sturgeon. Analysis of the genotype distribution in samples of the studied species allowed us to make an assumption that the genetic structure of spawning sturgeon stocks is significantlymetamorphosed under the influence of anthropogenic and natural factors.

[Prediction of metabolic syndrome development in patients with occupational diseases caused by exposure to physical factors].

To study the prevalence of metabolic syndrome (MS) and the possibilities of predicting the likelihood of its development, the investigators examined 127 patients with lung dust pathology and vibration disease. MS was diagnosed using the ATP III (2001), IDF (2005), and All-Russian Cardiology Research Society (ARCRS) (2008) criteria. Models of an association of the likelihood of MS development with some MS criteria described by logit regression equations (a quasi-Newton estimation method) were constructed using the logit regression analysis in each nosological group. The study showed the high prevalence of MS in various occupational diseases, the largest number of cases of the syndrome was identified applying the ARCRS criteria. The obtained logit regression models make it possible to predict the likelihood of MS occurrence in various occupational diseases, by taking into account etiological factors.

[Clinical and epidemiologic peculiarities of metabolic syndrome in patients with occupational diseases].

The article covers results of metabolic syndrome epidemiology studies in patients with occupational diseases. The authors compared occurrence of metabolic syndrome for various diagnostic criteria, analyzed prevalence of metabolic syndrome in individuals with various length of service in hazardous conditions, defined main clinical types of the metabolic syndrome manifestation in patients with occupational diseases.

[Population analysis of electrophoretic variation in blood serum albumins of European (Acipencer ruthensis L.) and Siberian (A. ruthensis marsiglii Brandt) sterlet].

We studied blood serum albumins in European (Acipencer ruthensis L.) and Siberian (A. ruthensis marsiglii Brandt) sterlet using disk electrophoresis in polyacrylamide gel. The albumins were shown to be controlled by three codominant alleles of a single locus (ALB*a, b, c). In European sterlet, all three theoretically possible genotypes were described, one of which (ALB*c/c) occurred extremely rarely (one individual). Siberian sterlet was found to be monomorphic for albumins: all fish examined had the ALB*a/a genotype. There was no correlation between albumin patterns and fish fatness. In a number of samples from the Volga River basin, spatial and temporal differentiation was found and analyzed. The results suggest that construction of hydroelectric plants may provoke massive and prolonged starlet migrations.