[Dynamics and structure of primary disability in persons of retirement age when applying to the Bureau of Medical and Social Expertise of Saint Petersburg from 2006 to 2017.]

The article presents data on primary disability in elderly and able-bodied people and older than able-bodied (retirement) age as a result of the survey of citizens in the Bureau of Medical and Social Expertise of Saint Petersburg in the period 2006-2017. The features of the level, structure, dynamics and distribution by groups of disability in retirement age are reflected. There was a significant increase in the level of disability in 2007, with a progressive decline to 2011 and a gradual decline until 2017. During the study period, there was a redistribution of persons of a retirement age for the first time recognized as disabled by groups of disabilities - an increase in the proportion of individuals in Groups I and III of disability due to a decrease in II disability groups.

Effect of tripeptide Lys-Glu-Asp on physiological activity of neuroimmunoendocrine system cells

Tripeptide Lys-Glu-Asp stimulates proliferation and inhibits apoptosis in organotypic cultures of neuroimmunoendocrine system cells. Lys-Glu-Asp accelerates cell renewal processes (decrease of apoptosis marker p53 and increase of proliferation marker Ki-67) in the pineal gland; this effect is more pronounced in cultures derived from old animals than in young cultures. The tripeptide induces the expression of low-differentiated lymphocyte marker CD5 and macrophage marker CD68, but in "old" cultures this effect is less pronounced than in "young" ones. Thus, in tissue culture Lys-Glu-Asp primarily affects the nervous and endocrine tissues during aging and produces a less pronounced effect on the nervous tissue. Physiological activity of the tripeptide consists in modulation of associative learning of honey bee in the model of short-term and the long-term memory.

Tetrapeptide H-Ala-Glu-Asp-Arg-OH stimulates expression of cytoskeletal and nuclear matrix proteins

Tetrapeptide H-Ala-Glu-Asp-Arg-OH enhances the expression of cytoskeletal (actin, tubulin, vimentin) and nuclear matrix proteins (lamin A, lamin C) in cultured mouse embryonic fibroblasts by 2-5 and 2-3 times, respectively. Thus, the previously reported cardioprotective activity of this tetrapeptide is determined by its capacity to activate synthesis of cytoskeletal and nuclear matrix proteins, which stimulates cell proliferation and reduces apoptosis.

HLA antigens in borderline and essential hypertension

The subject of investigation was the comparison of HLA antigen distribution in people with borderline hypertension (BH) and essential hypertension (EH). One hundred twenty-one men with BH and 60 men with EH were studied. The HLA frequency was compared with that in 858 healthy men, who were blood donors. In BH the increase of B16, B18, and Cw4 and the decrease of A11 and B5 antigen frequency were found. In comparison with St. Petersburg's healthy population, patients with EH were characterized by increasing antigens B18, B41, Cw2, and Cw4 frequency. The coincidence of increased antigen B18 and Cw4 representation in BH and EH allows us to consider them to be immunogenetic markers or predictors of development of EH.