scholarly journals Effect of Ligand Peptides on Post-Burn Inflammation of Damaged Corneal Tissue in Experiment

2019 ◽  
Vol 4 (4) ◽  
pp. 30-35
Author(s):  
A. V. Tereshchenko ◽  
I. G. Trifanenkova ◽  
A. M. Kodunov ◽  
A. A. Temnov ◽  
A. N. Sklifas
Keyword(s):  
Stem Cells ◽  
Burn Injury ◽  
Histological Study ◽  
Normal Structure ◽  
Control Treatment ◽  
Control Group ◽  
Corneal Tissue ◽  
Thermal Burn ◽  
Treatment And Prevention ◽  
Experimental Group

Background. In case of a corneal burn injury, cell transplantation into the damaged area must be performed within the first 12 hours, which makes it impossible to use autologous stem cells. One solution to this problem may be the use of peptides, derived from cultured stem cells in the treatment and prevention of complications in a burn eye disease. Aims: To study the dynamics of corneal tissue repair under the influence of a peptide solution on a corneal thermal burn model.Materials and methods. The study included 20 rabbits (20 eyes) of the gray Chinchilla breed weighing from 2.5 to 3.2 kg with a corneal thermal burn model. Depending on the method of treatment used, the animals were divided in two groups of 10 rabbits (10 eyes). In the experimental group, instillations of a peptide solution were used to treat corneal thermal burns; in the control treatment was carried out with a solution of moxifloxacin and gel “Solcoseryl”. On the 1st, 3rd, 7th, 14th, 30th days in each group, two animals were sacrificed to conduct a morphological study of the cornea. Results. In the experimental group, by the 30th day, according to a histological study, the inflammatory process was completed both on the surface and inside the cornea, with a tendency to restore its normal structure. In the control group of animals, significantly longer periods of corneal recovery and preservation of inflammation, despite the received therapy, were observed.Conclusions. The use of the peptide preparation is promising in the treatment of corneal thermal burn. Further research is needed in this area.

scholarly journals Experimental study of the effectiveness of 6-methyl-3-(thietane-3-yl)uracil-containing eye ­ointment in the treatment of corneal thermal burns

2019 ◽  
Vol 100 (4) ◽  
pp. 657-661
Author(s):  
A F Gabdrakhmanova ◽  
S A Meshcheryakova ◽  
R F Gaynutdinova ◽  
F Kh Kil’diyarov ◽  
S A Kurbanov ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Normal Structure ◽  
Control Group ◽  
Thermal Burn ◽  
Results Of Treatment ◽  
Cell Reproduction ◽  
Experimental Group ◽  
Toxic Reactions ◽  
Inflammatory Effect

Aim. To evaluate the effectiveness of wound healing eye ointment with 6-methyl-3- (thietane-3-yl) uracil in the treatment of corneal thermal burn in the experiment. Methods. The study was conducted on 6 rabbits of the chinchilla breed. The results of treatment and histomorphological studies of the rabbits’ cornea are presented after experimental thermal burn by instillation of water with a temperature of 80–85 °C with 20-second exposure to the cornea. In the experimental group (right eyes of rabbits) the animals were treated with developed 6-methyl-3-(thietane-3-yl)uracil eye ointment, in the control group (left eyes of rabbits) 20% gel of solcoseryl was applied. Animals were observed daily for 14 days. The condition and the morphological changes of the cornea were compared on days 1, 3, 7, 10, and 14 after the experimental thermal burn. Results. The features of reparative processes after corneal thermal burn depending on used treatment were determined. The study revealed that 6-methyl-3-(thietane-3-yl)uracil improved trophics more repidly, increased cell growth and cell reproduction, stimulated the regeneration process in damaged corneal tissues, accelerated wound and burn healing, and also provided anti-inflammatory effect. Positive dynamics was registered on days 4–5 in the experimental group, and by the 7th day in the control group. With 6-methyl-3-(thietane-3-yl)uracil no toxic reactions in the form of destruction of the collagen skeleton, maceration, pronounced edema and hyperemia were observed. On day 14 of follow-up, the microscopic picture of rabbits’ cornea had the usual normal structure. Conclusion. Treatment with 6-methyl-3-(thietane-3-yl)uracil resulted in faster and more structured and anatomically correct healing of corneal thermal burn compared to the treatment with alternative medication solcoseryl in the control group.

scholarly journals Clinical and imaging outcomes after intrathecal injection of umbilical cord tissue mesenchymal stem cells in cerebral palsy: a randomized double-blind sham-controlled clinical trial

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Man Amanat ◽  
Anahita Majmaa ◽  
Morteza Zarrabi ◽  
Masoumeh Nouri ◽  
Masood Ghahvechi Akbari ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Cerebral Palsy ◽  
Umbilical Cord ◽  
Intrathecal Injection ◽  
Control Group ◽  
Umbilical Cord Tissue ◽  
The Mean ◽  
And Control ◽  
Experimental Group

Abstract Background This study assessed the safety and efficacy of intrathecal injection of umbilical cord tissue mesenchymal stem cells (UCT-MSC) in individuals with cerebral palsy (CP). The diffusion tensor imaging (DTI) was performed to evaluate the alterations in white-matter integrity. Methods Participants (4–14 years old) with spastic CP were assigned in 1:1 ratio to receive either UCT-MSC or sham procedure. Single-dose (2 × 107) cells were administered in the experimental group. Small needle pricks to the lower back were performed in the sham-control arm. All individuals were sedated to prevent awareness. The primary endpoints were the mean changes in gross motor function measure (GMFM)-66 from baseline to 12 months after procedures. The mean changes in the modified Ashworth scale (MAS), pediatric evaluation of disability inventory (PEDI), and CP quality of life (CP-QoL) were also assessed. Secondary endpoints were the mean changes in fractional anisotropy (FA) and mean diffusivity (MD) of corticospinal tract (CST) and posterior thalamic radiation (PTR). Results There were 36 participants in each group. The mean GMFM-66 scores after 12 months of intervention were significantly higher in the UCT-MSC group compared to baseline (10.65; 95%CI 5.39, 15.91) and control (β 8.07; 95%CI 1.62, 14.52; Cohen’s d 0.92). The increase was also seen in total PEDI scores (vs baseline 8.53; 95%CI 4.98, 12.08; vs control: β 6.87; 95%CI 1.52, 12.21; Cohen’s d 0.70). The mean change in MAS scores after 12 months of cell injection reduced compared to baseline (−1.0; 95%CI −1.31, −0.69) and control (β −0.72; 95%CI −1.18, −0.26; Cohen’s d 0.76). Regarding CP-QoL, mean changes in domains including friends and family, participation in activities, and communication were higher than the control group with a large effect size. The DTI analysis in the experimental group showed that mean FA increased (CST 0.032; 95%CI 0.02, 0.03. PTR 0.024; 95%CI 0.020, 0.028) and MD decreased (CST −0.035 × 10-3; 95%CI −0.04 × 10-3, −0.02 × 10-3. PTR −0.045 × 10-3; 95%CI −0.05 × 10-3, −0.03 × 10-3); compared to baseline. The mean changes were significantly higher than the control group. Conclusions The UCT-MSC transplantation was safe and may improve the clinical and imaging outcomes. Trial registration The study was registered with ClinicalTrials.gov (NCT03795974).

scholarly journals MORPHOLOGICAL CHANGES IN THE TISSUES OF THE RABBIT KNEE JOINT DUE TO EXPERIMENTAL OSTEOARTHRITIS AFTER THE USE OF MESENCHYMAL STEM CELLS

2021 ◽  
Vol 359 (58) ◽  
pp. 13-24
Author(s):  
Nikolai MALYUK ◽  
◽  
Yuliia DEMIANTSEVA ◽  
Yuriy KHARKEVYCH ◽  
Roman BOKOTKO ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Articular Cartilage ◽  
Knee Joint ◽  
Traditional Method ◽  
Control Group ◽  
Osteoarthritis Of The Knee ◽  
Allogeneic Bone ◽  
Experimental Osteoarthritis ◽  
Experimental Group

The purpose of the study was to investigate the regenerative processes in the knee joint of rabbits with experimental osteoarthritis after using of allogeneic bone marrow stem cells and a traditional treatment with the non-steroidal anti-inflammatory drug Meloxicam. For the experiment were used 27 male California rabbits (males). Three groups of animals were formed: a control group; the first experimental group treated by the traditional method; the second experimental group treated with allogeneic mesenchymal stem cells (MSC). Animals in the three groups were subjected to osteoarthritis of the knee joint by double injection of 3.44% retinol acetate into the joint cavity at a dose of 1 ml at intervals of 7 days. Tissue from the affected site was sampled for histological examination at 7, 14 and 28 days. The histological sections were stained with haematoxylin-eosin and examined under a microscope. It has been established that intra-articular administration of 3.5 × 106 cells of allogeneic MSCs in experimental osteoarthritis contributes to the restoration of the superficial layer of cartilage, as evidenced by the formation of columns of chondrocytes in the middle layer of articular cartilage and the appearance of isogenic groups of cartilage cells with basophilic cytoplasm in the matrix, uniform articular surface. The use of the traditional method of treating rabbits using the drug Meloxicam is accompanied by incomplete chondrogenesis: part of the chondrocytes is localized in typical chambers, in some cases chondrocyte chambers did not differentiate; articular cartilage had unequal thickness, cell placement was uneven.

Effect of Astragaloside IV On Precartilaginous Stem Cells to Promote Bone Development in Rats

2021 ◽  
Author(s):  
Zhizhou Jiang ◽  
Hang Yin ◽  
Lei Zhao ◽  
Jianyong Jiang ◽  
Jinbo Ni ◽  
...  
Keyword(s):  
Stem Cells ◽  
Cultured Cells ◽  
Bone Development ◽  
Biological Characteristics ◽  
Control Group ◽  
Astragaloside Iv ◽  
Tibial Length ◽  
Antibody Staining ◽  
Precartilaginous Stem Cells ◽  
Experimental Group

Abstract Objective To explore the effect of astragaloside IV in promoting bone development by promoting the proliferation of precartilaginous stem cells. Methods To co-cultured the cells from the resting chondrocyte of growth plate and LaCroix of 24-hours old rats,and identified by FGFR-3 staining. Choosing astragaloside IV induce precartilaginous stem cells cultured in vitro, using Collagen type Ⅱ monoclonal antibody staining and MTT to test cell biological characteristics. Four 4 weeks old SD rats were selected and divided into an experimental group and control group, 24 rats in each group. The rats in the experimental group were injected with astragalus injection in a dose of 8.0g / kg once a day. The rats in the other group were injected with the same amount of normal saline. The 3rd and 5th week after feeding, 12 rats were killed, and the tibial length was measured by vernier caliper.Rusults The FGFR-3 staining was positive, which proved that the cultured cells were precartilaginous stem cells. Collagen typeⅡmonoclonal antibody staining is positive and the OD value detected by MTT test was higher, after astragaloside IV induced the precartilaginous stem cells. After astragaloside IV injection, the tibial length of experimental group measured by vernier caliper was significantly higher than that of the control group.Conclusion astragaloside IV can promote the proliferation and biological characteristics of precartilaginous stem cells, and then promote bone development.

scholarly journals Healing of abdominal wall aponeurosis of rats after incision with either cold scalpel or electrocautery

2007 ◽  
Vol 22 (suppl 1) ◽  
pp. 12-15 ◽  
Author(s):  
Ademar Garcia ◽  
José Eduardo Aguilar-Nascimento ◽  
Eduardo Mulinari Darold ◽  
Rodolfo Edson de Franco Pimentel ◽  
Eloísa Almeida Curvo ◽  
...  
Keyword(s):  
Abdominal Wall ◽  
Histological Study ◽  
Control Group ◽  
Hydroxyproline Content ◽  
Tissue Samples ◽  
Significant Difference ◽  
Experimental Group

PURPOSE: To compare the healing of abdominal wall aponeurosis of rats after incision with either cold scalpel or electrocautery. METHODS: Twelve male adults Wistar inbreed rats weightin 258-362g entered the experiment. They were randomly divided in two groups, control group (N= 6) and experimental group (N= 6). All animals underwent anesthesia followed abdominal wall incision with either cold scalpel (controls) or electrocautery (experimental group). The animals were killed on the 10th day and necropsied. Tissue samples containig the abdominal wall aponeurosis were sent for both histological study and hydroxyproline content assay. RESULTS: The histological study showed no significant difference between the two groups. Hydroxiproline content in experimenral group (128,56 [78,98-198,92] µg /100m) was not significantly different from control group (140,27 [116,20-166,59] mg /100ml; p = 0.53). CONCLUSION: Healing of abdominal wall after dieresis with either cold scalpel or electrocautery are equivalent and do not differ.

Adaptive timing of detachment in a tick parasitizing hole-nesting birds

Parasitology ◽  
2011 ◽  
Vol 139 (2) ◽  
pp. 264-270 ◽  
Author(s):  
J. WHITE ◽  
D. J. A. HEYLEN ◽  
E. MATTHYSEN
Keyword(s):  
Experimental Treatment ◽  
Control Treatment ◽  
Control Group ◽  
Suitable Habitat ◽  
Nest Boxes ◽  
Tree Holes ◽  
Ixodes Arboricola ◽  
Experimental Treatments ◽  
Experimental Group ◽  
Engorgement Weight

SUMMARYIn non-permanent parasites with low intrinsic mobility such as ticks, dispersal is highly dependent on host movements as well as the timing of separation from the hosts. Optimal detachment behaviour is all the more crucial in nidicolous ticks as the risk of detaching in non-suitable habitat is high. In this study, we experimentally investigated the detachment behaviour of Ixodes arboricola, a nidicolous tick that primarily infests birds roosting in tree-holes. We infested great tits with I. arboricola larvae or nymphs, and submitted the birds to 2 experimental treatments, a control treatment in which birds had normal access to nest boxes and an experimental treatment, in which the birds were prevented access to their nest boxes for varying lengths of time. In the control group, most ticks detached within 5 days, whereas in the experimental group, ticks remained on the bird for as long as the bird was prevented access (up to 14 days). This prolonged attachment caused a decrease in survival and engorgement weight in nymphs, but not in larvae. The capacity of I. arboricola larvae to extend the duration of attachment in non-suitable environments with no apparent costs, may be an adaptation to unpredictable use of cavities by roosting hosts during winter, and at the same time may facilitate dispersal of the larval instars.

scholarly journals Experimental study action autostrains Aerococcus viridans on the model Pseudomonas infection

2017 ◽  
Vol 8 (3) ◽  
pp. 313-316
Author(s):  
D. O. Stepanskyi ◽  
G. M. Kremenchutskyi ◽  
I. P. Koshova
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Clinical Signs ◽  
Solution Concentration ◽  
Control Group ◽  
Infection Model ◽  
Treatment And Prevention ◽  
Aerococcus Viridans ◽  
Group A ◽  
Recovery Dynamics ◽  
Experimental Group

The paper presents the results of a study of the action of Aerococcus autostrains on the model of a chronic blue pus infection. For the study of the action of Aerococcus autosymbiont strains on Pseudomonas aeruginosa, three of the most biochemically and antagonistically active isolates were selected: 1) 5m2015 (isolated from mice); 2) 3k2015 (isolated from rats); 3) 3ch2015 (isolated from humans). Experiments were conducted on 84 white outbred mice weighing 16–17 g, 60 were used as the experimental, and 24 as the control group. In the experimental group of animals, infected wounds were treated by Aerococcus autosymbiont strains once daily (0.2 billion ml–1) till recovery. The drug was administered under the eschar with a syringe. In the control animals the wound was treated by isotonic sodium chloride solution (concentration 0.9%) with the same route of administration and for the same period of time. It was found that from the very first days of application of Aerococci autosymbiont strains, perifocal inflammation was less severe in most animals in the research group compared with the control group. Starting from the fourth day of usage of Aerococcus autosymbiont strains the number of pseudomonades, contained in secretions from wounds in the experimental group of mice was significantly lower than in the control animals. It was revealed that in case of application of Aerococcus strain (5m2015) isolated from mice, the animals had better indicators of recovery, dynamics of local clinical signs of inflammation and the number of pseudomonades contained in the wound in comparison with other Aerococcus autostrains isolated from rats and humans. The wounds purified from pus and covered with dry eschar faster. For example, wounds completely healed with dry eschar rejection by the 11th day of observation in 44 of 58 surviving mice (75.9%). In the control group a similar pattern was observed in only 3 of 17 mice (17.6%) by the that period. The number of Pseudomonas aeruginosa (equivalent to 1 ml of secretions wounds), expressed in logarithms, was 5.00 ± 0.16 on average on the 4th day in the treated mice, while the control group had the same amount of pseudomonades detected in the wounds (lg 5.22 ± 0.38; lg 5.12 ± 0.30) only on the 13–14th days of observation. We found different activity of strains, depending on the origin of microorganism and type host. Aerococcus viridians autosymbionts showed higher rates in the study of their activity in terms of the blue pus infection model in the treatment of the host and lower activity in treatment.of other species. The obtained data may warrant further study of application of Aerococcus autostrains for treatment and prevention of wound infection caused by pseudomonades. 

scholarly journals Influence of milk thistle, methifene and sylimevit on the morphological parameters of laying hens in experimental chronic cadmium toxicosis

2020 ◽  
Vol 3 (1) ◽  
pp. 42-46
Author(s):  
A. Y. Ostapyuk ◽  
B. V. Gutyj
Keyword(s):  
Body Weight ◽  
Laying Hens ◽  
Modern Science ◽  
The Body ◽  
Control Group ◽  
Milk Thistle ◽  
Morphological Parameters ◽  
Treatment And Prevention ◽  
Physiological Processes ◽  
Experimental Group

One of the most pressing problems of modern science is the systematic study of natural processes, forecasting and complex assessment of changes in the environment under the influence of anthropogenic load. Blood composition is a relatively constant indicator, which is at the same time one of the labile systems of laying hens. Physiological processes that occur in the body, largely affect the quality of blood. Hematological studies make it possible to study in more detail the effect of cadmium on the body of chickens, on the basis of which a more specific development of the scheme of treatment and prevention of cadmium toxicosis in poultry is possible. The aim of this study was to investigate the effect of milk thistle, methifene and silymevitis on the morphological indices of laying hens in the development of chronic cadmium toxicosis. 32 laying hens, 78 weeks of age, were selected for the study. Four experimental groups were formed: control and three experimental. The control group (C) chickens and the three experimental groups were cadmium sulfate 4 mg/kg body weight in water. The chickens of the experimental group E1 with feed were fed the fruits of milk thistle spotted at a dose of 2.0 g/kg of feed once a day for 30 days. The chickens of the E2 experimental group were fed methifene at a dose of 0.28 g/kg of feed once a day for 30 days with feed. The chickens of the E3 experimental group were fed a sylimevit at a dose of 0.36 g/kg of feed once a day for 30 days. Drinking cadmium sulphate to laying hens at a dose of 4 mg/kg body weight contributed to a decrease in red blood cell count, hemoglobin level and an increase in leukocyte counts. With cadmium load of laying hens, milk thistle, methifene and sylimevit have a positive effect on the morphological parameters of the blood. In chronic cadmium toxicosis in laying hens, the best normalizing effect on the morphological parameters of the blood of experimental chickens is sylimevit, compared with methifene and milk thistle.

scholarly journals The impact of humic acid additives on mineral metabolism of rabbits in the postnatal period of ontogenesis

2020 ◽  
Vol 11 (2) ◽  
pp. 289-293
Author(s):  
M. A. Rybalka ◽  
L. M. Stepchenko ◽  
O. O. Shuleshko ◽  
L. V. Zhorina
Keyword(s):  
Alkaline Phosphatase ◽  
Humic Acid ◽  
Blood Serum ◽  
Bone Tissue ◽  
Mineral Metabolism ◽  
Histological Study ◽  
Postnatal Period ◽  
Control Group ◽  
Copper And Zinc ◽  
Experimental Group

Humic acids are characterized by chelating properties due to which they are able to influence the mineral metabolism in animals. Rabbits have species-specific characteristics of mineral metabolism, which distinguishes them from most species of mammals. For the experiment, 16 rabbits of 45-day-old of Hyplus breed were divided into the experimental and control group of 8 rabbits in each. The animals were 15 days in the preparatory period. The rabbits of the experimental group received humic acid additive individually with water in the amount of 5 mg/kg, the rabbits of the control group received pure water in the same amount. The ability of humic acid additive to increase the content of calcium, ionized calcium, iron, to correct the content of copper and zinc, and also to increase the activity of alkaline phosphatase in the blood serum of rabbits of the experimental group has been proved. We observed the early effect of the humic acid additive on increasing the content of iron and calcium ionized and a later effect on the activity of alkaline phosphatase and an increase in the content of copper in the blood serum. The influence of humic acid additive on the distribution of calcium, phosphorus, manganese, copper and zinc in bone tissue is determined. According to a histological study, there was a significant increase in the number of layers of osteons and osteoblasts in the bone tissue of the femur, an increase in the number of osteons and osteoblasts in the bone tissue of the sternum and an increase in the number of columns of chondrocytes and an increase in the number of chondrocytes in the column in the cartilaginous tissue of the sternum. The results of a histological study of bone tissue, together with an increase in structural macroelements in it and redistribution of osteotropic trace elements in the blood and bone tissue suggest the possibility of using a humic acid additive to intensify the growth and mineralization of bone tissue, which can improve the state of bone tissue of rabbits in the postnatal period ontogenesis.

Partial hepatectomy against the background of superinvasive opisthorchiasis does not provoke carcinogenesis

2021 ◽  
Vol 22 (2) ◽  
pp. 29-35
Author(s):  
S. D. Lazarev ◽  
◽  
E. D. Khadieva ◽  
V. G. Bychkov ◽  
L. V. Vikhareva ◽  
...  
Keyword(s):  
Partial Hepatectomy ◽  
Microscopic Analysis ◽  
Normal Structure ◽  
Regenerative Process ◽  
Middle Lobe ◽  
Control Group ◽  
Electron Microscopic ◽  
Ki 67 ◽  
Research Goal ◽  
Experimental Group

Research goal: identification of the risk of oncogenesis in the liver under the influence of 2 promoter factors – partial hepatectomy (PHE) performed against the background of superinvasive opisthorchiasis (SO) in Syrian hamsters. Material and methods. SO was modeled by infecting animals (n = 86) with 50 metacercariae of O. felineus. Superinvasions (50 metacercariae) were repeated 6 and 16 days after primary infection. PHE – removal of the middle lobe of the liver – 17.3-17.7% of the organ weight was performed according to the method of G. M. Higgins, K. M. Andersson 16 days after the last superinvasion. The quantitative assessment of the regenerative process after PHE was determined by the coefficients of regeneration completeness (%) by the formula Кпрп = (М1 – М2) / М3 × 100. The histological specimens were stained with hematoxylin and eosin and by the methods of Van Gieson, Slinchenko, Samsonov, Kupriyanov. IHC–reactions were carried out with antibodies to Ki–67, CD31, CD34, CD117, Oct 4, and α–fetoprotein. Electron microscopic analysis was performed on a “JEM – 100CX” microscope (JEOL, Ltd., Japan). The quantitative characteristics were processed using the statistical software Microsoft Excel (2019) and the Statistica package (version 12.6). Results. Analysis of the obtained data indicates that by the 16th day after PHE, 3 zones have formed in the liver: zone A – the stump, zone B – is adjacent to the wound zone A, zone C – is adjacent to zone B. By the 16th day after PHE, expressed proliferation processes of the CD31, CD34, Oct 4, CD117–positive cells and differentiation into endothelial cells, cholangiocytes, hepatocytes with the formation of vessels are noted. At a later date of the experiment, hepatocyte fields with the presence of α–fetoprotein in the cytoplasm, cholangiocellular tubules were formed; at a later date (23 days), ducts lined with a cylindrical epithelium of normal structure were identified. The epithelial lining of the preexisting ducts is multi–row by the end of the experiment; no tumors were found in the liver in the experimental group. An increase in liver mass was noted in the control group (SO) by 8.2%, in the experimental group – 24.7%. Conclusion. The liver with partial hepatectomy against the background of superinvasive opisthorchiasis is an organ with permanent proliferation of CCD and HCD cells, hyperregeneration and a significant increase in mass. In the presence of 2 promoters without initiators, the risk of carcinogenesis does not increase.

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