MORPHOLOGICAL CHANGES IN PERIODONTAL TISSUES OF RATS IN THE EXPERIMENTAL MODEL OF TYPE 2 DIABETES MELLITUS

2021 ◽  
Vol 17 (78) ◽  
pp. 190
Author(s):  
A. V. Artemchuk ◽  
O. V. Savychuk ◽  
O. I. Ostapko ◽  
V. A. Krychkevych ◽  
O. I. Koval
2021 ◽  
pp. 37-43
Author(s):  
A. V. Samoilenko ◽  
L. M. Matvyeyenko

The most significant periodontal disorders associated with diabetes mellitus are due to changes in bone tissue. It has become necessary for specific osteotropic therapy that can normalize metabolic processes in the alveolar bone. In turn, currently the most promising in terms of improving osteogenic activity are strontium ions. Strontium ranelate is used to treat osteoporosis due to its antiresorptive and osteoanabolic action. However, its effectiveness against alveolar bone has not been sufficiently studied. The purpose of the work is to conduct a clinical study of complex treatment of generalized periodontitis, supplemented with strontium ranelate, in patients with type 2 diabetes mellitus. Materials and methods of the research. The study included 60 patients with generalized periodontitis of I-II degree of severity, chronic course, aged 35-45 years. Type 2 diabetes mellitus was diagnosed and two groups were formed. The traditional treatment regimen was used in the group of comparison (main group) where Strontium Ranelate was prescribed additionally. The treatment was evaluated according to the dynamics of clinical observations, orthopantomography and computed tomography data, the results of biochemical studies. As markers of bone resorption, tartrate-resistant acid phosphatase (TRAP) activity was determined in blood serum and the content of β-CrossLaps fragments was determined in urine. As markers of osteogenesis, the concentration of C-terminal propeptide type I procollagen (CICP) was detected in blood plasma, bone alkaline phosphatase (BAP) and osteocalcin were detected in serum. Serum parathyroid hormone concentrations, total blood calcium and total inorganic phosphorus in the blood were studied as indicators of mineral metabolism. Results of the research. In the earliest possible timeframe the complex treatment of generalized periodontitis was conducted during the observation which led to clinical stabilization of the inflammatorydestructive process in the periodontal tissues without a significant difference between the experimental groups (p ˃ 0.05). However, the condition of periodontal tissues in patients of the experimental groups differed in a year after treatment. In 16.7% of patients from the comparison group, recurrence of the inflammatory-destructive process in periodontal tissues was diagnosed, while the cases the deterioration of the pathological process was not detected in the main group. A significant difference was found for complex periodontal indices (Ramfjord, PI and SPITN) (p <0.05). Clinical and radiological stabilization was observed in 83.3% of patients of the comparison group and in 100% in the main group. According to the results of computed tomography of the alveolar bone, an increase in bone mineral density was established in both groups, but only in the main group the difference between indices before and after treatment was significant (p˂0.05). In patients of the main group a more pronounced decrease in the activity of tartrate-resistant acid phosphatase (TRAP) was found in the serum and the concentration of β-CrossLaps was found in the urine, indicating inhibition of bone resorption, as well as markers of bone formation the concentration of C-terminal propeptide (CICP) was found in blood plasma, bone alkaline phosphatase (BAP) was found in serum, osteocalcin (p <0.05). Indicators of mineral metabolism in bone tissue, both during treatment and for experimental groups, almost did not differ (p> 0.05). Thus, the use of strontium drugs in the complex treatment of generalized periodontitis in patients with type 2 diabetes mellitus provides a longer and more stable clinical and radiological stabilization of the pathological process in periodontal tissues, primarily by inhibiting bone resorption and enhancing osteogenesis. So, they can be recommended for the wide use in stomatological practice.


2021 ◽  
Vol 66 (11) ◽  
pp. 678-683
Author(s):  
I. P. Balmasova ◽  
V. N. Tsarev ◽  
K. G. Unanyan ◽  
E. V. Ippolitov ◽  
T. V. Tsareva ◽  
...  

The place of high-tech methods of molecular biology in clinical laboratory diagnostics of various diseases and the development of a system of biomarkers as an important component of diagnostic research is currently attracting the closest attention of the scientific community. In this paper, an attempt is made to use high-tech metagenomic analysis to solve problems that arise due to the high frequency of association of periodontal diseases with systemic pathology, in particular, with type 2 diabetes mellitus. The aim of the study was to determine the taxonomic and metabolic features of the microbiome of periodontal tissues in periodontal diseases associated with type 2 diabetes mellitus, as a model of the ratio of local and systemic effects of periodontal pathogenic bacteria. The study included 16S shotgun sequencing of bacterial DNA as part of biological material from periodontal pockets/dentoalveolar furrows of 46 people - 15 patients with chronic periodontitis associated with type 2 diabetes mellitus, 15 patients with chronic periodontitis unrelated to systemic pathology, as well as 16 healthy people in the control group, followed by bioinformatic processing of the data obtained. The obtained data allowed us to establish the taxonomic features of the periodontal microbiome in the association of chronic periodontitis with type 2 diabetes mellitus, which included the predominance of representatives of the families Prevotellaceae and Spirochaetaceae in its composition. The features of metabolic processes in periodontal tissues with the participation of the microbiome were also revealed, which consisted in an increase in the exchange of cysteine and methionine against the background of a decrease in the metabolism of pyrimidine, methane, sphingolipids, and the synthesis of fatty acids, which are of diagnostic value in assessing the condition of patients with type 2 diabetes mellitus.


2018 ◽  
Vol 32 (0) ◽  
Author(s):  
Mônica Fernandes GOMES ◽  
Maria da Graças Vilela GOULART ◽  
Lilian Chrystiane GIANNASI ◽  
Cybelle Mori HIRAOKA ◽  
Gabriela de Fátima Santana MELO ◽  
...  

2020 ◽  
Vol 24 (4) ◽  
pp. 325-337
Author(s):  
K. G. Unanyan ◽  
I. P. Balmasova ◽  
V. N. Tsarev ◽  
A. M. Mkrtumyan ◽  
K. S. Elbekyan ◽  
...  

Relevance . The association of chronic periodontitis with type 2 diabetes mellitus is one of the most frequent manifestations of systemic effects that are etiologically associated with periodontopathogenic bacteria in the biofilm of the gingival sulcus. In this regard, the study of the metabolic mechanisms leading to such systemic effects and serving their markers is an urgent problem. Aim . Study of the features of sphingolipid/ceramide metabolism, both produced by etiologically significant microflora, and present in periodontal tissues of patients on the example of the association of chronic periodontitis with type 2 diabetes. Materials and methods . The observation groups included 58 patients with chronic periodontitis in association with type 2 diabetes, 39 patients with chronic periodontitis without concomitant systemic pathology, and 27 conditionally healthy people. All the examined patients underwent molecular genetic studies of the taxonomic and metabolic profiles of the dental sulcus/ periodontal pockets microbiota using 16S sequencing and evaluation of phosphorylated ceramides in saliva by the activity of the ceramid kinase enzyme. Results . It was found that in the Association of chronic periodontitis with type 2 diabetes mellitus, there are features of the taxonomic composition of the dental sulcus/periodontal pockets microbiota, which are combined with a decrease in sphingolipid metabolism. In addition, in these patients, depending on the duration of diabetes mellitus, there was an increasing drop in the saliva of ceramide kinase, which determines the phosphorylation of sphingolipids/ceramides. Conclusion . In the Association of chronic periodontitis with type 2 diabetes mellitus, the systemic effects of the dental sulcus/ periodontal pockets microbiota are manifested by a decrease in sphingolipid metabolism, including a decrease in ceramide kinase in periodontal tissues, which can serve as a marker of the combined pathological process.


2020 ◽  
Vol 115 (1) ◽  
pp. 37-46
Author(s):  
Yulia Osadchuk ◽  
Roman Dovhan ◽  
Olexandr Vershuta

One of the popular approaches to reproducing the model of type 2 diabetes mellitus (T2D) in experimental animals is a food load with a high content of natural fat since the long-term effect of increased levels of fatty acids (FA) plays a key role in the development of insulin resistance. Study of the features of the fatty acid composition of rat liver and brain tissue in an experimental model of T2D was the purpose of the work. An experimental model was reproduced on white Wistar rats by a 3-month high-fat diet (45% animal fat) supplemented with fructose and subsequent induction with streptozotocin (STZ) 25 mg/kg once. The control group (CG) consisted of intact animals that received standard vivarium food throughout the experiment. The study of the composition of FA was carried out by gas-liquid chromatography. Statistical data processing was performed using a license package IBM SPSS Statistics 23.  In rats with T2D, in comparison with CG, in the liver tissue and in brain tissue the content of saturated FAs increased 1.3 times (P <0.05), due to C16: 0 - palmitic, the content of unsaturated FA decreased by 1.3 times (P <0.05), and the proportion of polyunsaturated FA decreased by 1.8 times (P <0.05). Moreover, a change in the liver and brain FA composition the development of T2D was revealed. In the liver of rats with T2D compared with CG revealed an increase of 4 times myristin (P <0,05), 1,4 times of pentadecan (P <0,05) and 2 times (P <0,05) of margarine FA, a reduction of 3.5 times (P <0.05) arachidonic and a 2-fold increase (P <0.05) of linolenic. In the brain of rats with T2D, the content of myristin and pentadecan FA increased by 2-fold (P <0.05), and margarine appeared, which was not detected in the CG rats. Found a 2-fold (P <0.05) decrease in linoleic, a 2-fold increase in arachidone (P <0.05), and determined a linolenic that was not characteristic of CG rats. Modeling T2DM by feeding of HFD with the addition of fructose and the induction of STZ causes not the same redistribution of the fatty acid composition of the organs of experimental animals. This must be taken into account for prescribing a therapeutic scheme (diet) that is targeted correction of the FA, since the treatment results can affect the functioning of organs differently and body systems.


2020 ◽  
Vol 19 (2) ◽  
pp. 41-47
Author(s):  
O. A. Kaydash ◽  
V. V. Ivanov ◽  
A. I. Vengerovsky ◽  
E. E. Buyko ◽  
I. A. Schepetkin

Sign in / Sign up

Export Citation Format

Share Document