Publications by authors named "Y Komisarenko"

4 Publications

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Georgian Med News 2021 Mar(312):42-46

Bogomolets National Medical University, Institute of Postgraduate Education, Department of Dentistry, Kyiv, Ukraine.

In recent years, according to the WHO, more than 1,9 billion people over the age of 18 are overweight, of whom more than 650 million are obese, with an annual trend. Studies in recent decades have shown that obese young people with generalized periodontitis have abnormalities in protein, fat and carbohydrate metabolism, which contributes to the early destruction of the periodontal tissue complex and rapid tooth loss. The aim of our study was to examine changes in serum leptin and adiponectin in patients with generalized periodontitis on the background of obesity. The study involved 94 people aged 19 to 35 years. Patients were divided into 3 groups: 32 patients with generalized periodontitis on the background of overweight, 40 patients with generalized periodontitis and obesity, and the control group - 22 healthy individuals of the same age category. The content of leptin and adiponectin in the serum was determined by enzyme-linked immunosorbent assay (ELISA) ELISA. The study was performed by analyzing venous blood (2 ml) in a BD Vacutainer tube and then centrifuging on LDN and Mediagnost GmbH analyzers and test systems (Germany). Studies allow us to conclude that in the serum of patients with generalized periodontitis on the background of overweight and obesity there is an imbalance of adipokines leptin and adiponectin. The obtained data are consistent with the literature, according to which, an increase in BMI is accompanied by an increase in leptin production and a decrease in adiponectin levels. These disorders were more pronounced in patients with generalized periodontitis on the background of obesity. Such an imbalance in adipose tissue may stimulate the production of pro-inflammatory cytokines and contribute to the progression of periodontal disease in such patients.
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March 2021

Vitamin D Deficiency and Immune Disorders in Combined Endocrine Pathology.

Front Endocrinol (Lausanne) 2018 9;9:600. Epub 2018 Oct 9.

Endocrinology Department, Bogomolets National Medical University, Kyiv, Ukraine.

Combined endocrine pathology is a serious healthcare problem in Ukraine. This prospective study assessed the blood levels of 25-hydroxyvitamin D [25(OH)D] and markers of immune function in response to vitamin D intervention in patients with type 1 and type 2 diabetes mellitus (T1DM and T2DM, respectively) and autoimmune thyroiditis (AIT). This study evaluated the relationship between the metabolic and immune status of DM + AIT patients with respect to their vitamin D status and changes after vitamin D supplementation. Patients with type 1 or type 2 DM in combination with AIT and decreased circulating levels of 25(OH)D were divided into two groups of 30 patients each. All patients with AIT were euthyroid and receiving hormonal replacement therapy. The levels of carbohydrate and fat metabolism markers, Immunologic markers, namely, Th1-type cytokines [interferon (IFN)-γ, tumor necrosis factor (TNF)-α, interleukin (IL)-2, IL-6, IL-12], Th2-type cytokines (IL-4, IL-5), IL-10, and IL-17 were measured before and after vitamin D supplementation. The vitamin D status was assessed according to the level of 25(OH)D. Patients with combined endocrine disorders (DM and AIT) with a decreased vitamin D status had significantly increased background concentrations of Th1-type cytokines and reduced concentrations of Th2-type cytokines (IL-4 and IL-5), IL-10, and IL-17. The results of our study showed that vitamin D supplementation in patients with T1DM and T2DM reduced the concentrations of the inflammatory Th1-type cytokines and increased the levels of Th2-type cytokines. The presence of two endocrine diseases, aggravated by decreased circulating levels of 25(OH)D, leads to disorders wherein the immune status is markedly changed. These decreased levels of 25(OH)D contribute to an autoimmune inflammatory process and to the progression of complications in addition to the metabolic disorders. A vitamin D intervention resulted in significant changes in the blood levels of 25(OH)D that are related to parameters of autoimmunity and glucose metabolism. Vitamin D supplementation should be considered for the prevention and treatment of combined endocrine pathology.
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October 2018

Effects of Cholecalciferol on Key Components of Vitamin D-Endo/Para/Autocrine System in Experimental Type 1 Diabetes.

Int J Endocrinol 2018 6;2018:2494016. Epub 2018 Feb 6.

Department of Biochemistry of Vitamins and Coenzymes, Palladin Institute of Biochemistry of the National Academy of Sciences of Ukraine, Kyiv, Ukraine.

Objectives: Recent prospective studies have found the associations between type 1 diabetes (T1D) and vitamin D deficiency. We investigated the role of vitamin D in the regulation of 25OHD-1-hydroxylase (CYP27B1) and VDR expression in different tissues of T1D rats.

Design: T1D was induced in male Wistar rats by streptozotocin (55 mg/k b.w.). After 2 weeks of T1D, the animals were treated orally with or without vitamin D (cholecalciferol; 100 IU/rat, 30 days).

Methods: Serum 25-hydroxyvitamin D (25OHD) was detected by ELISA. CYP27A1, CYP2R1, CYP27B1, and VDR were assayed by RT-qPCR and Western blotting or visualized by immunofluorescence staining.

Results: We demonstrated that T1D led to a decrease in blood 25OHD, which is probably due to the established downregulation of CYP27A1 and CYP2R1 expression. Vitamin D deficiency was accompanied by elevated synthesis of renal CYP27B1 and VDR. Conversely, CYP27B1 and VDR expression decreased in the liver, bone tissue, and bone marrow. Cholecalciferol administration countered the impairments of the vitamin D-endo/para/autocrine system in the kidneys and extrarenal tissues of diabetic rats.

Conclusions: T1D-induced vitamin D deficiency is associated with impairments of renal and extrarenal CYP27B1 and VDR expression. Cholecalciferol can be effective in the amelioration of diabetes-associated abnormalities in the vitamin D-endo/para/autocrine system.
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February 2018

Impact of hypoglycemia on daily life of type 2 diabetes patients in Ukraine.

J Multidiscip Healthc 2013 9;6:249-57. Epub 2013 Jul 9.

Erasmus University Rotterdam, Rotterdam, the Netherlands ; Danylo Halytsky Lviv National Medical University, Lviv ; MSD Ukraine.

This study evaluates the impact of hypoglycemia on the lives of Ukrainian patients with type 2 diabetes mellitus. The secondary objective was to explore patient-physician relationships and the attitudes of patients towards various informational resources on diabetes management. Three focus groups with 26 patients were conducted. Qualitative information was evaluated using content analysis. The results show that patients with type 2 diabetes mellitus in Ukraine are adapting to potential attacks of hypoglycemia; however, they still experience periodic manifestations of hypoglycemia that significantly affect their psychological well-being. This result is similar to observations made in other countries. Ukrainian patients >40 years old mainly receive information on disease management from endocrinologists, and rarely use internet resources on diabetes management. Information provision was especially important at the early stage of the disease, when patients lack information on hypoglycemia manifestations and could therefore fail to identify and manage it properly.
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July 2013