[Tumnin mineral spring. History of development]. / Tumninskii mineral'nyi istochnik. Istoriya osvoeniya.

The article dwells upon the history of the discovery of the Tumnin mineral spring, the establishment and development of the Far Eastern health resort «Goryachy Klyuch,¼ located in the basin of Chope creek, a tributary of the largest river in the eastern macroslope of Sikhote Alin, Tumnin river, located 25 km from the Strait of Tartary. A historical sketch since the first mentioning of the Tumnin mineral spring from 1903 to the present day, as well as the results of hydrogeological expeditions to determine the chemical composition and α-activity of Tumnin mineral water at different periods, are presented. A contribution of a geological expedition that established a large deep-lying tectonic structure permeable to upwelling thermal water flows is described. The role of the staff of the physiotherapy and balneology department of the Khabarovsk Medical Institute in the study of the mechanism of action and clinical effectiveness of the Tumnin mineral water is addressed. A balneological characteristic of nitric and siliceous thermal water, the basic therapeutic factor of «Goryachy Klyuch¼ health resort, which has always been popular among the Far East residents, but gained special importance and appreciation of patients during the pandemic of new coronavirus infection, is given. Currently, in the health resort «Goryachy Klyuch¼, patients with skin diseases, musculoskeletal, gynecologic, neurologic diseases, digestive tract disorders, metabolic conditions, upper airways, cardiovascular disorders, occupational diseases are treated using balneotherapy and other methods of non-drug therapy. At present, the health resort «Goryachy Klyuch¼ is going through a difficult but interesting period of improvement of recreation opportunities for the Far East residents.

[Balneological resource of the 'Zharkie Vody' (Hot Waters) spring (Iturup Island)]. / Bal'neologicheskii resurs istochnika 'Zharkie vody' (o. Iturup).

BACKGROUND: It is necessary to develop a balneotherapeutic and tourist-recreational complex on Iturup Island (hereinafter referred to as Iturup Island). This investigation was conducted in the framework of the federal target program 'Socioeconomic development of the Kuril Islands, Sakhalin Region, for 2007-2015' under No. 478 dated 08.09.06. OBJECTIVE: To characterize the balneological resource of the 'Zharkie Vody' (Hot Water) spring on Iturup Island. MATERIAL AND METHODS: Expeditionary studies were conducted at the 'Zharkie Vody' spring located near the village of Raidovo (Iturup Island): its water samples were taken and chemically analyzed in a certified laboratory in Khabarovsk; the biological activity of the mineral water was studied using the Cyto-Expert portable non-invasive diagnostic equipment adapted to the expeditionary conditions. RESULTS: The mineral water from the 'Zharkie Vody' deposit (Iturup Island) is weakly mineralized siliceous sulfate-bicarbonate-chloride calcium-sodium thermal and has an activation function on living cell structures. CONCLUSION: The data obtained from the studies created the prerequisites for setting up a balneotherapy complex near the 'Zharkie Vody' on Iturup Island and provide optimistic forecasts for the further study of this deposit.

[Monitoring of selenium content in some food of residents of the Khabarovsk].

The development of about 40 diseases, including cancer and cardiovascular diseases, is associated with a lack of selenium (Se) consumption. According to the previously obtained data, Khabarovsk Krai is characterized by low human selenium status in various age groups and low content in most foods, that is the main reason for the population Se deficit in Khabarovsk territory. To study the content of Se in some foods in Khabarovsk in the comparative aspect. Study design: prospective. The content of Se in the basic products collected in the commercial network of Khabarovsk [wheat, rye-wheat bread (48 samples), chicken eggs - 24 samples] was determined, the choice of these products was justified by their maximum availability for all segments of the population. The Se level was determined by fluorimetric method. According to previous studies, we have found low Se content in donors' blood serum and basic food products in the Khabarovsk territory, which indicated the need to for monitoring and correcting Se status. Eating exclusively local products and the influence of geochemical specificity of the area were the main reasons for the development of Se deficit, because the status of a person completely depended on the inflow of nutrient from the diet. According to the monitoring data for 10 years, Se content in wheat bread decreased more than 3 fold, in rye bread - more than twice. There was 2-fold decrease in Se content in a chicken egg. On average, residents of Khabarovsk with 1 chicken egg received only 3.7-22.6% of the adequate level of Se consumption. The selenium content in an egg enriched with this trace element was 15.85±4.3 µg (or 25.5±6.4 µg/100 g), which is twice as high as the average Se content in a standard egg. The dynamic assessment of Se content in products of daily demand of residents of the Khabarovsk territory indicates a critically low content of the element in bread and chicken eggs; the established level of Se in foods does not contribute to the accumulation of the element in the human body. The obtained data should become one of the main components of the regional program of optimization of Se status of Khabarovsk population.

[Selenium content in human in Sakha Republic].

Sakha Republic is considered to be endemic selenium deficient and poorly investigated region. Analysis of selenium in human sera, hair and nails revealed strongly decreased values. Low selenium concentrations were registered also in meat of domestic animals, fresh-water fish, mushrooms weight, agaricus campester. The possibility of the human selenium content improvement is discussed via import of grain with high selenium concentration.