scholarly journals USING MESENCHYMAL STEM CELLS FOR TREATING GINGIVAL RECESSION IN THE EXPERIMENT

2018 ◽  
Vol 25 (5) ◽  
pp. 83-92
Author(s):  
S. P. Rubnikovich ◽  
Yu. L. Denisova ◽  
V. A. Andreeva ◽  
G. Yu. Panasenkova ◽  
I. S. Khomich
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Experimental Studies ◽  
Gingival Recession ◽  
Laboratory Animals ◽  
Control Group ◽  
Periodontal Tissues ◽  
White Rats ◽  
Clinical Changes ◽  
Complete Regeneration

Aim. This research was conducted to study the type of clinical changes in the diseased periodontal tissues by means of using mesenchymal stem cells for treating gingival recession in the experiment.Materials and methods. Adipose tissue in a volume of 1-2 ml was sampled from one specimen in sterile conditions in order to obtain allogeneic mesenchymal stem cells before the beginning of the experimental studies. Random-bred female white rats (60 specimens) were used as a model in the experiment. The surgical intervention was performed in the area of incisors on the upper and lower jaws of rats. All animals were divided into 5 groups (10 rats in each group) depending on the planned method of the treatment. The control group, intact rats, consisted of 10 laboratory animals with a healthy gingiva. The creation of a model of the experimental gingival recession was carried out by the mechanical V-shaped excision of periodontal tissues.Results. The experimental studies showed the possibility of complete regeneration of the dentogingival papillae as well as periodontal tissues regeneration in the area of the experimental gingival recession during the first 28 days. Meanwhile, there is a complete absence of inflammatory signs in the 5th group (hyperemia, edema, gingival bleeding), along with their significant decrease in the 3rd and the 4th groups that confirms the pronounced therapeutic effect of mesenchymal stem cells and sterile bioplastic collagen material «Collost» (7% gel).The conclusion. While studying the type of clinical changes in diseased periodontal tissues using mesenchymal stem cells in the treatment of gingival recession, we established the positive dynamics in the experiment. The decrease in the intensity and prevalence of gingival inflammation starts from the 14th day. On the 28th day there was noted a complete absence of inflammatory signs in the animals after injecting the transplant consisting of the cell suspension on the sterile bioplastic material Collost (7% gel). Furthermore, the significant increase in the regeneration of the gingival margin was observed on the 24th day from the moment of creating the gingival recession model. The complete regeneration of the dentogingival papillae and the absence of the gingival recession were noted on the 38th day of general observation. 

scholarly journals APPLICATION OF CELLULAR TECHNOLOGIES FOR REGENERATION OF PERIODONTAL TISSUES IN EXPERIMENT

2018 ◽  
Vol 62 (4) ◽  
pp. 463-472 ◽  
Author(s):  
Sergei P. Rubnikovich ◽  
Igor D. Volotovsky ◽  
Yulia L. Denisova ◽  
Тatiana E. Vladimirskaya ◽  
Vasilina A. Andreeva ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Adipose Tissue ◽  
Morphological Changes ◽  
Fibrous Tissue ◽  
Laboratory Animals ◽  
Control Group ◽  
Cell Transplant ◽  
Periodontal Tissues ◽  
White Rats

A promising scope of modern scientific research is the use of autologous and allogeneic mesenchymal stem cells for regeneration of periodontal tissues. The aim of the study was to evaluate the nature of morphological changes in the pathologically altered periodontal tissues after injection of a biotransplant containing mesenchymal stem cells of the adipose tissue immobilized on a collagen carrier in an animal experiment. In the experiment, 60 randobbred females of white rats were used as a model, whose adipose tissue was taken to obtain allogenic mesenchymal stem cells. All animals were divided into 5 groups, depending on the planned method of treatment – 10 rats each. The control group consisted of 10 laboratory animals with healthy gingiva. The experimental gingival recession model was created by the V-shaped excision of periodontal tissues. The bioplastic collagen material “Collost” gel 7 % in isolated form determines the fibrosis intensification and serves as a “matrix” for the formation of a fibrous tissue, ensures the adhesion of stem cells and their transformation into pro- and fibroblasts. Injection of a cell transplant suspension into physiological saline activates the processes of cell proliferation and transformation of fibroblast differentiating cells. Suspension of the cell transplant on a sterile bioplastic collagen material “Collost” gel 7 % enhances the effects of gel and stem cells, promotes the leveling of atrophic and dystrophic changes in the gum, strengthening a mechanical component, reducing the recession of the gum and the depth of the gingival pocket.

scholarly journals Clinical and roentgenological evaluation of the status of periodontal tissues of laboratory animals in the application of mesenchymal stem cells

2020 ◽  
Vol 17 (2) ◽  
pp. 178-190
Author(s):  
S. P. Rubnikovich ◽  
S. V. Sirak ◽  
Yu. L. Denisova ◽  
V. A. Andreeva ◽  
E. V. Kuzmenko ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Bone Tissue ◽  
Laboratory Animals ◽  
Control Group ◽  
Mineral Density ◽  
Regeneration Time ◽  
Periodontal Tissues ◽  
Radiological Changes ◽  
Experimental Periodontitis

The article examines the clinical and roentgenological changes in the periodontal tissues of laboratory animals when mesenchymal stem cells (MSC) are used.The aim of the study is to create a model of experimental periodontitis and identify the characteristics of clinical and radiological changes in periodontal tissues when applying a biomedical cell product based on allogeneic mesenchymal adipose stem cells (AT MSCs).During the examination of the clinical and radiological changes in the periodontal tissues ofexperimental animals with formed bone defects filled with AT MSCs, it was found that the mucous membrane regeneration time in the surgical area was comparable in all main groups of animals. Postoperative gum recession was observed in the control group animals. The significant differences between the clinical pictures in groups I–IV during all observation periods after surgery were not revealed. However, the restoration process signs in the post-resection area found during the roentgenological examination in the groups using osteoinduced MSCs, as well as a mixture of MSC cultures and osteo-induced MSCs, were most pronounced, which is confirmed by the bone mineral density.The experimental periodontitis model, which could be used for assessing the bone tissue restoration processes of a labioratory animal, was developed. Thus, the use of collagen membranes with a suspension of allogeneic osteo-induced AT MSCs cultures, as well as membranes with a suspension of a mixture of allogeneic and allogeneic osteo-induced AT MSCs in the ratio of 1:1 allows achieving higher bone tissue recovery rates.

scholarly journals Clinical reasoning of application of stem cells in the treatment of gingival recession

2019 ◽  
Vol 63 (4) ◽  
pp. 476-484 ◽  
Author(s):  
Sergei P. Rubnikovich ◽  
Igor D. Volotovsky ◽  
Yulia L. Denisova ◽  
Vasilina A. Andreeva ◽  
Galina Yu. Panasenkova
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Orthodontic Treatment ◽  
Good Condition ◽  
Gingival Recession ◽  
Long Term Results ◽  
Cell Transplant ◽  
Complex Treatment ◽  
Periodontal Tissues ◽  
Autologous Mesenchymal Stem Cells

The aim of the study is to improve the results of complex treatment of patients with gingival recession on the basis of validation of new, highly effective methods using autologous mesenchymal stem cells. A complex treatment was conducted in 93 patients with an anatomical recession of the gum in combination with dentoalveolar anomalies at the age of 20 to 29 years. Patients were divided into 3 groups depending on the treatment used. All patients underwent periodontological treatment. In the 2nd group, patients underwent periodontological treatment including orthodontic equipment, in the 3rd group, they underwent orthodontic treatment, and a cell transplant based on a mixture of autologous mesenchymal stem cells and sterile bioplastic collagen material “Collost” was used. A comprehensive assessment of the periodontal tissue of the three groups showed that among the patients who received the standard treatment complex, a good condition of the periodontal tissues in 1 to 2 years after treatment was noted only in 16.7 % of the patients of the 1st group. Inclusion of orthodontic treatment made it possible to obtain good results in 25 % of patients in the 2nd group, which is 8 % more than in the 1st group. At the same time, good treatment results were revealed in 94 % of the 3rd group patients, who underwent periodontological and orthodontic treatment using autologous mesenchymal stem cells, which confirms the need for measures aimed to normalize the position of teeth, dentition and bite with the use of small orthodontic long-acting forces, to improve the microcirculation of periodontal tissues, and to restore the contour of marginal dreams. Inclusion of autologous mesenchymal stem cells in the complex treatment of patients with gingival recession is accompanied by a 1.6-fold decrease in the prevalence and gum recession (1.15 mm), and a 2.6-fold increase in the tissue volume, by the stimulation of periodontal microcirculation processes (the capillary periodontal pressure is increased by a factor of 1.1 time and the intensity of periodontic microcirculation is increased by a factor of 3.1 times), as well as by the normalization of the position of teeth, dentition and occlusion, which allowed one to obtain good long-term results in 94 % of patients.

scholarly journals MACROSCOPIC CHANGES IN EXPERIMENTALLY DAMAGED TIBIA OF RABBITS WHEN ALLOGENEIC MESENCHYMAL STEM CELLS WERE INTRODUCED IN DIFFERENT WAYS

2020 ◽  
Vol 21 (1) ◽  
pp. 168-174
Author(s):  
T. L. Savchuk ◽  
R. R. Bokotko ◽  
Yа. О. Kharkevych ◽  
A. Y. Mazurkevych ◽  
M. O. Malyuk ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Soft Tissues ◽  
Experimental Studies ◽  
Mechanical Damage ◽  
Control Group ◽  
Tibial Defect ◽  
Complete Restoration ◽  
Bone Damage ◽  
Regeneration Processes

The article presents the results of studying macroscopic changes in the tibia of rabbits during experimental mechanical damage after leading allogeneic mesenchymal stem cells to the jugular vein and directly to the site of bone damage. Bone damage was modeled on 3-month-old chinchilla rabbits in the middle third of the tibial shaft. Macroscopic studies of the process of restoration of the tibial defect were carried out on 3, 7, 14, 21, 28 and 42 days. Our macroscopic studies of the healing of a tibial defect indicate a difference in the regeneration processes in rabbits of the control group and experimental groups after the use of allogeneic mesenchymal stem cells. It was found that the introduction of allogeneic mesenchymal stem cells, regeneration processes are faster for 3 days in the area of damage, there are no blood clots, and in the subsequent phases of regenerative osteogenesis, the reaction of adjacent soft tissues, the formation of bone corns and its reduction in volume, accelerated. Almost complete restoration of the defect due to the introduction of allogeneic mesenchymal stem cells occurs on the 28 day. While in the control group of animals, it ends only at 42 days. In addition, it was found that the introduction of allogeneic mesenchymal stem cells directly to the site of injury regeneration processes in the area of the created bone defect are more intensively expressed in the first and subsequent phases of regeneration than in animals after the use of allogeneic mesenchymal stem cells intravenously. The obtained data can be used to restore damaged bone tissue using stem cells, as well as for further experimental studies.

scholarly journals Restoration of limited defects of the cartilage with the use of cell-engineered constructs

2018 ◽  
Vol 19 (4) ◽  
pp. 97-103
Author(s):  
S. A. Gerasimov ◽  
N. A. Tenilin ◽  
D. Ia. Aleynik ◽  
S. N. Bugrov ◽  
N. Iu. Shirokova ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Recovery Factor ◽  
Long Term Results ◽  
Laboratory Animals ◽  
Control Group ◽  
Partial Recovery ◽  
Defect Region ◽  
Adhesion Properties

Aim: to develop a three-dimensional composite cell-engineered constructs (CEC) for restoration of limited defects of the cartilage in experiment.Materials and methods. To create a cell-engineered constructs (CEC), were used collagenic carriers: «Chondro Gide» impermeable bilayer membrane and «Osteoplast» permeable matrix. A comparative study of their cytotoxic and adhesion properties was made in vitro. Chondroplastic potential of prepared CECs based on collagenous matrices with allogeneic mesenchymal stem cells (MSC) of the rabbit bone marrow grown on their surface was assessed in vivo. A cylindrical defect of the cartilage of the medial femoral condyle 3.3 mm in diameter at a depth of 1.5 mm was formed on both rabbit feet. Laboratory animals were divided into 3 groups: control group; Experiment 1 group with Chondro Gide used as the MSC carrier within CEC; Experiment 2 group using Osteoplast matrix. Upon experiment completion, a morphometric and histomorphologic research of tissue specimens was made. For statistical evaluation of the results a defect region recovery factor (RF) was offered and used. Results. After a 6-month observation period the control group showed partial recovery of the defect region with the recovery factor (RF) of 0.62 ± 0.06. The RF in Experiment 1 group equalled to 0.79 ± 0.07, Experiment 2 group revealed RF at the level of 0.88 ± 0.02. Statistical analysis of the research results shows that the use of CEC used in Experiment 2 group reduces a relative risk of therapeutic failures by 92.9%, and absolute risk – by 43.3% as compared to Experiment 1 group. Histomorphologic research data are indicative of a hyaline cartilage formation in the central defect zone, which is partially close to the intact cartilage to the maximum with zonality marked.Conclusion. Results of the research of the developed three-dimension cell-engineered constructs consisting of mesenchymal stem cells of the bone marrow grown on the Osteoplast permeable collagenic matrix show the formation of a cartilaginous hyaline tissue with a high level of structural organization in the area of its implantation. The thickness of a newly formed cartilage is insignifi cantly less than that of the preceding cartilaginous tissue, thus facilitating a dynamic distribution of the axial load on the articular surface, and as a whole this holds out hope for good long-term results. Therefore, based on the data obtained, we consider it reasonable to perform next investigation phases of the offered cell-engineered constructs for chondroplasty of limited cartilage defects. 

scholarly journals Evaluation of the Effectiveness of Mesenchymal Stem Cells of the Placenta and Their Conditioned Medium in Local Radiation Injuries

Cells ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2558
Author(s):  
Vitaliy Brunchukov ◽  
Tatiana Astrelina ◽  
Daria Usupzhanova ◽  
Anna Rastorgueva ◽  
Irina Kobzeva ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Conditioned Medium ◽  
Complete Healing ◽  
Laboratory Animals ◽  
Control Group ◽  
Radiation Injuries ◽  
Wound Surface ◽  
Open Wound ◽  
Local Radiation

Background: The search for an effective therapy for local radiation injuries (LRI) is urgent; one option is mesenchymal stem cells (MSC) derived from the placenta and their conditioned medium for the regenerative processes of the skin. Methods: We used 80 animals, randomly assigned to four groups: control (C) animals that did not receive therapy; control with the introduction of culture medium concentrate (CM); introduction of MSCs (PL); introduction of CMPL. LRI modeling was performed on an X-ray machine at a dose of 110 Gy. Histological and immunohistochemical tests were performed. Results: On the 112th day, the area of the open wound surface in the CMPL group was 6.7 times less than in the control group. Complete healing of the open wound surface of the skin in the CM group was observed in 40%, in CMPL 60%, in the PL group 20%, and in the C group there were no animals with a prolonged wound defect. A decrease in inflammatory processes was observed in the CMPL group. Conclusions: the use of a concentrate of conditioned MSCs (CMPL group) in severe LRI in laboratory animals accelerates the transition of the wound process to the stage of regeneration and epithelization.

Application of cell biotechnologies in the treatment of gum recession

2019 ◽  
pp. 50-55 ◽  
Author(s):  
S.P. Rubnikovich ◽  
I.D. Volotovsky ◽  
Yu.L. Denisova ◽  
L.N. Dedova ◽  
V.A. Andreeva ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Orthodontic Treatment ◽  
Good Condition ◽  
Gingival Recession ◽  
Long Term Results ◽  
Cell Transplant ◽  
Complex Treatment ◽  
Periodontal Tissues ◽  
Autologous Mesenchymal Stem Cells

The aim of the study is to develop and scientifically justify a new method for treating patients with gingival recession using autologous mesenchymal stem cells of adipose tissue. Objects and methods. A complex treatment was conducted in 93 patients with an anatomical recession of the gums in combination with dentoalveolar anomalies at the age of 20 to 34 years. Patients were divided into 3 groups (1st, 2nd and 3rd groups) depending on the treatment used. All patients underwent periodontological treatment. In the second group, patients included periodontological treatment including orthodontic equipment, in the third group, orthodontic treatment and the use of a cell transplant on the basis of a mixture of autologous mesenchymal stem cells and sterile bioplastic collagen material “Collost”. Results and discussion. A comprehensive assessment of the periodontal tissue of the three groups showed that among the patients who received the standard treatment complex, a good condition of the periodontal tissues 1 to 2 years after treatment was noted only in 16.7% of the patients of the 1st group. Inclusion of orthodontic treatment made it possible to obtain good results in 25% of patients in the 2nd group, which is 8% more than in the 1st group. At the same time, good results of treatment were revealed in 94% of patients in group 3, who included periodontological and orthodontic treatment using autologous mesenchymal stem cells, which confirms the need for measures aimed at normalization position of teeth, dentition and bite with the use of small orthodontic long-acting forces, improving microcirculation of periodontal tissues and restoring the contour of the marginal gum. Conclusions. Inclusion of autologous mesenchymal stem cells in the complex treatment of patients with gingival recession is accompanied by a 1.6-fold decrease in the prevalence and gum recession (1.15 mm), and tissue volume increased 2.6-fold, stimulation of periodontal microcirculation processes (in terms of capillary the periodontal pressure was 1.1 times and the intensity of periodontal microcirculation was 3.1 times), as well as the normalization of the position of teeth, dentition and occlusion, which allowed to obtain good long-term results in 94% of patients.

scholarly journals Morphological changes in periodontal tissues in laboratory animals using mesenchymal stem cells

2020 ◽  
Vol 17 (4) ◽  
pp. 444-451
Author(s):  
S. P. Rubnikovich ◽  
S. V. Sirak ◽  
Yu. L. Denisova ◽  
V. A. Andreeva ◽  
E. V. Kuzmenko ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Bone Defect ◽  
Morphological Changes ◽  
Blood Clot ◽  
Bone Tissue Regeneration ◽  
Laboratory Animals ◽  
Collagen Membrane ◽  
Periodontal Tissues ◽  
Defect Area

The article presents the analysis of the morphological changes of the periodontal tissues of laboratory animals using mesenchymal stem cells (MSCs). The goal of the study is to create a model of experimental periodontitis and to identify the characteristics of morphological changes in the periodontal tissues using a biomedical cell product based on the allogeneic adipose tissue of MSCs (AT MSCs). The application of a mixture of AT MSCs and osteoinduced AT MSCs (in the ratio of 1:1) allows reducing the time of bone defect regeneration in comparison to that of bone tissue regeneration when AT MSCs and osteoinduced AT MSCs are used separately, which is expressed in the filling of the bone defect with a fibroreticular osteogenic tissue, as well as with a muscle tissue one month after surgery. In 2 months, in the defect area filled with a collagen membrane with a mixture of AT MSCs and osteoinduced AT MSCs, the initial signs of the formation of trabecula of bones were detected, which is evident of a more comprehensive osteosynthesis process compared to the blood clot use.

TOXICOLOGICAL PROFILE OF “BIOSOLBI” DRUG

1970 ◽  
pp. 67-69
Author(s):  
E. K. Rakhmatullin ◽  
O. D. Sklyarov
Keyword(s):  
Drug Toxicity ◽  
Probit Analysis ◽  
Laboratory Animals ◽  
Control Group ◽  
Hazard Class ◽  
Water Ingestion ◽  
White Rats ◽  
Poorly Soluble ◽  
And Behavior ◽  
Purebred Dogs

The article presents the results of a study of the "Bisolbi" drug toxicity (powder of light ash color, poorly soluble in water). When it is mixed with water it forms a suspension of particles that settle rapidly. Values of acute drug toxicity were determined on rats. We studied groups of six animals of the same sex, as well as similar control ones. The "Bisolbi" drug was injected to white rats intragastrically, males weighing 310 ... 320 g in doses of 2500 and 2740 mg / kg. Each dose was used in six animals; distilled water (3 ml) was used for the controls. The LD50 was calculated by the probit analysis method proposed by Litchfield and Wilcoxon modified by Z. Roth. When administered orally, an atraumatic metal probe was immersed in the stomach. Within 14 days monitored the overall health status and behavior of animals, the manifestation or absence of symptoms of intoxication; noted the features of feed and water ingestion, assessed the condition of the coat, physiological functions. Then groups of experimental rats were euthanized and pathomorphologically examined. We studied the effect of "Bisolbi" with repeated introduction and on not purebred dogs. Two groups of 3-4 years of age were completed with an average initial body weight of 13.63 ... 15.11 kg. Before use, the additive was thoroughly mixed with feed. The drug was injected during 31 days at a dose of 0.5 g / kg. Dogs of the control group (three) were fed wheat flour. After 15 and 31 days in laboratory animals in order to characterize the general condition in the blood, the amount of protein, urea, glucose, creatinine, cholesterol were determined. Based on studies it was found that the drug daily application by animals, is low toxic and safe, does not provoke the development of pathological reactions. According to the Hodge and Sterner classification "Bisolbi" can be attributed to the 6th class of toxicity - relatively harmless. Accordingto GOST 12.1.007-76 LD50 of the drug is more than 151 mg / kg, but less than 5000 mg / kg it is the 3rd hazard class (moderately hazardous).

scholarly journals Combination of umbilical cord mesenchymal stem cells and standard immunosuppressive regimen for pediatric patients with severe aplastic anemia

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yang Lan ◽  
Fang Liu ◽  
Lixian Chang ◽  
Lipeng Liu ◽  
Yingchi Zhang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Aplastic Anemia ◽  
Umbilical Cord ◽  
Pediatric Patients ◽  
Statistical Significance ◽  
Severe Aplastic Anemia ◽  
Control Group ◽  
Open Label ◽  
Cell Counts

Abstract Background Defects of bone marrow mesenchymal stem cells (BM-MSCs) in proliferation and differentiation are involved in the pathophysiology of aplastic anemia (AA). Infusion of umbilical cord mesenchymal stem cells (UC-MSCs) may improve the efficacy of immunosuppressive therapy (IST) in childhood severe aplastic anemia (SAA). Methods We conducted an investigator-initiated, open-label, and prospective phase IV trial to evaluate the safety and efficacy of combination of allogenic UC-MSCs and standard IST for pediatric patients with newly diagnosed SAA. In mesenchymal stem cells (MSC) group, UC-MSCs were injected intravenously at a dose of 1 × 106/kg per week starting on the 14th day after administration of rabbit antithymocyte globulin (ATG), for a total of 3 weeks. The clinical outcomes and adverse events of patients with UC-MSCs infusion were assessed when compared with a concurrent control group in which patients received standard IST alone. Results Nine patients with a median age of 4 years were enrolled as the group with MSC, while the data of another 9 childhood SAA were analysed as the controls. Four (44%) patients in MSC group developed anaphylactic reactions which were associated with rabbit ATG. When compared with the controls, neither the improvement of blood cell counts, nor the change of T-lymphocytes after IST reached statistical significance in MSC group (both p > 0.05) and there were one (11%) patient in MSC group and two (22%) patients in the controls achieved partial response (PR) at 90 days after IST. After a median follow-up of 48 months, there was no clone evolution occurring in both groups. The 4-year estimated overall survival (OS) rate in two groups were both 88.9% ± 10.5%, while the 4-year estimated failure-free survival (FFS) rate in MSC group was lower than that in the controls (38.1% ± 17.2% vs. 66.7% ± 15.7%, p = 0.153). Conclusions Concomitant use of IST and UC-MSCs in SAA children is safe but may not necessarily improve the early response rate and long-term outcomes. This clinical trial was registered at ClinicalTrials.gov, identifier: NCT02218437 (registered October 2013).

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