[Features of endocrine function of the pancreas with aging in nonhuman primates with various types of adaptive behavior.].

An increasing number of studies are devoted to the study of the relationship of mental disorders, such as depression and anxiety, with the risk of developing type 2 diabetes mellitus. However, in the literature there are practically no publications on the study of the relationship of the features of higher nervous activity, in particular, adaptive behavior, in healthy individuals with the risk of developing age-related dysfunction of the pancreatic islet apparatus (PIA). The purpose of this study was to investigate features of the functioning of the PIA during aging in individuals with normal standard behavior (SB), as well as anxiety- and depressive-like behavior (DAB) in experiments on nonhuman primates.

Age-specific and individual features of vasopressinergic regulation of the hypothalamic-pituitary-adrenal system in primates.

Experimental study was carried out on young mature (6-8 years) and old (21-27 years) rhesus macaques with anxious and depression-like behavior and with standard (control) adaptive behavior. The responce of the adenohypophysis to arginine vasopressin depended on age and the type of adaptive behavior. Young animals with standard behavior demonstrated much higher concentrations of ACTH in the peripheral plasma in response to arginine vasopressin than old animals.

[Correction of impaired glucose tolerance using tetrapeptide (Pancragen) in old female rhesus monkeys].

The aim of the investigation was comparative study of the influence tetrapeptide Pancragen (St. Petersburg Institute of Bioregulation and Gerontology, St. Petersburg) on hormonal function of the pancreas compared to the effect of widely used hypoglycemic drug - glimepiride.

[Impact of tetrapeptide pancragen on endocrine function of the pancreas in old monkeys].

Significant increase of the elderly in the demographic structure of a modern society is one of the main reasons for increase in the number of patients with diabetes type 2 and impaired glucose tolerance. The purpose of this research was to study impact of Pancragen (tetrapeptide Lys-Glu-Asp-Trp) on endocrine function of the pancreas of non-human primates, female rhesus monkeys, and to elucidate the possibil- ity of its use for correction age-related dysfunction of pancreatic islet apparatus. In old animals after the glucose administration (standard dose) in control period, a reduced glucose "disappearance" rate and a higher values of insulin and C-peptide peaks (5 and 15 min after the glucose injection) were observed in comparison with young animals in similar experiments.

Repeated moderate stress stimulates the production of dehydroepiandrosterone sulfate (DHEAS) and reduces corticosteroid imbalance in old Macaca Mulatta.

Young (6-8 years) and old (21-30 years) Macaca mulatta females were subjected to gentle immobilization (2 h daily at 15.00) for 10 days. Blood specimens were collected before the exposure and 15, 30, 60, 120, 240 min and 24 h after the beginning of exposure on days 1, 3, and 10.