scholarly journals DYNAMICS OF HEMATOLOGICAL INDICES IN RATS AFTER ADMINISTRATION OF DIAMOND-CARBON COATED STEEL IMPLANTS INTO THE FEMUR

Author(s):  
V.B. Makarov ◽  
D.V. Morozenko ◽  
K. B. Gliebova

Introduction. The pathological body response to metal implants is considered to be well known. There are a lot of studies devoted to this issue. This work is devoted to investigating the dynamic changes of haematological indicators as markers reflecting body response to the insertion of steel implants with diamond-carbon coating in rats. The purpose of the study is to assess the effects caused by steel implant with a diamond-coated coating on rat’s body by assessing hematological parameters. Materials and methods. The study involved 61 male rats: five of which were intact animals, and the rest was divided into two groups (28 animals in each). The first group was the control group, in which rats were inserted non-coated steel implants into the femoral metaphysic; the second group was test group, in which rats were inserted steel diamond-coated implants). The age of animals at the beginning of the experiment was 5–6 months, the body weight was 300–400 g. Blood for research was taken from the animals after decapitation in 7, 14, 30 and 90 days following the implantation. The blood samples were measured for the red blood cell, white blood cells, haemoglobin, leukogram. The findings obtained were processed by statistical analysis methods. Results and conclusions. The first group of the rats with inserted steel implants without coating showed the number of erythrocytes and haemoglobin did not differ from those in the intact rats, the leukocyte count on the 7th and 14th days was reduced by 31.8 % to 39.4 %, respectively; on the 7th day the percentage of lymphocytes and monocytes increased by 13.0 % and 5.0 % due to the toxic immunosuppressive effect of steel implants on the body of the experimental animals. The 2nd group of rats, which were inserted diamond-coated steel implants in their femurs, the rates of erythrocytopoiesis, the leukocyte number and leukogram characteristics remained unchanged during all the observation periods, except for an increase in the percentage of eosinophils on the 7th day and lymphocytes on the 90th day of follow- by 3 % that indicates a less pronounced body response in comparison with the animals of I group.

2020 ◽  
Vol 64 (2) ◽  
pp. 83-87 ◽  
Author(s):  
Valery N. Rakitskii ◽  
E.G. Chkhvirkiya ◽  
T.M. Epishina

Introduction. Technical products that are part of pesticides recommended for use in agriculture must undergo a comprehensive sanitary and Toxicological examination, which is the basis for preventing the adverse effects of pesticides on the health of workers and the population, as well as on the sanitary state of the environment. Purpose of research - the study of the biological effect of the technical product derived triazolinthionov, with its repeated oral intake in mammals (rats), justification of the permissible daily dose (DSD) for humans. Material and methods. Chronic (12 months) experiment was conducted on male rats with a body weight of 200-210 g tested doses: 5.0; 50.0 and 500.0 mg/kg body weight (1 control and 3 experimental groups and 20 individuals each). In the dynamics of the experiment, we observed the condition and behavior of animals, water and food consumption, fixed the timing of death, recorded changes in body weight, physiological, biochemical and hematological parameters. Results. It was found that the dose of 5.0 mg/kg body weight does not cause significant changes in all studied parameters, doses of 50.0 and 500.0 mg/kg body weight had a polytropic effect on the body of experimental animals. Discussion. The studied technical product at repeated intake in doses of 50,0 and 500,0 mg/kg of body weight causes changes in the state of the Central nervous system of animals (statistically significant changes in SPP, total activity, path length, rest time), as well as changes in carbohydrate, lipid, and lipoprotein metabolism in the body, as evidenced by statistically significant changes in biochemical and hematological indicators. Consequently, doses of 50,0 and 500,0 mg/kg of body weight have a polytropic effect on the body of male rats and are effective. The dose of 5.0 mg/kg of body weight, when administered in animals of the experimental group in comparison with animals of the control group, there are no changes in all the studied parameters throughout the experiment, is accepted as invalid. On the basis of an inactive dose of 5.0 mg/kg of body weight and a reserve factor of 100, we have scientifically justified DSD for humans at the level of 0.05 mg/kg. Conclusion. Studies have shown that long-term repeated oral administration of the studied product into the body of animals (male rats) at a dose of 5.0 mg per 1 kg of body weight does not cause statistically significant changes in all the studied parameters, so the indicated dose is invalid. Doses of 50,0 and 500,0 mg/kg MT have a polytropic effect on the body of male rats and are effective. DSD for humans at the level of 0.05 mg/kg is justified based on the inactive dose at the level of 5.0 mg per 1 kg of body weight, established in a 12-month chronic experiment conducted on male rats, and the reserve coefficient of 100 (taking into account the unexpressed specific and long-term effects).


2020 ◽  
Vol 384 (2) ◽  
pp. 22-28 ◽  
Author(s):  
N. V. Gaponov ◽  
S. V. Svistunov ◽  
N. N. Bondarenko ◽  
I. A. Romanenko

The use of water with a modified isotopic composition in the diet of humans and animals, for example, with a reduced deuterium content, affects the rate of biological processes. In this regard, the targeted formation of the isotopic D / H gradient in the body can be used to increase its adaptive properties to external influences. Primates have a high anatomical and physiological similarity with humans, therefore, are an indispensable model for reproducing various pathological and toxic conditions in humans. The aim of the study was to study the effect of water with a low deuterium content on the hematological and biochemical blood parameters of rhesus monkeys and on the digestibility of nutrients of the diet. In the control group, primates consumed water with a natural regional content of deuterium equal to 150 mg / l, and in the experimental group - with reduced to 50 mg/l. The duration of the experiment was 35 days. The material for the study was venous blood, serum and feces of primates. Blood was drawn from monkeys before the use of deuterium depleted water and after the completion of the experiment. All blood samples (2.5-3.0 ml) were taken from the cubital or femoral veins of animals on an empty stomach and stabilized with a heparin solution. Laboratory studies of animal blood were performed on an automatic hematological analyzer (Beckman Coulter, USA) of the CoulterAcT 5diffCP brand. In order to study the effect of water with a reduced deuterium content on hematological parameters, we determined the number of red blood cells, white blood cells, platelets, hemoglobin concentration, hematocrit, the average volume of red blood cells, red blood cell anisocytosis, and erythrocyte sedimentation rate (ESR). The metabolism trial was divided into two periods. Preliminary - to exclude the influence of previous feeding and accustoming primates to cage conditions of keeping. Experimental - conducting a thorough accounting of consumed feed, excreted excrement. Feces were collected daily at the same time (morning and evening), weighed and ground in a mortar. At each collection, 50% of the homogenized mass was taken for analysis. The collected portions were stored in the refrigerator. After the end of the experimental (accounting) period in the collected feces, the initial moisture was determined by drying at 60-70 ℃ to constant weight. The resulting air-dry mass was thoroughly ground and analyzed. It has been found that the introduction of water with a reduced deuterium content into the diet of primates has a positive effect on feed conversion rate and blood biochemical parameters.


2021 ◽  
Vol 15 (3) ◽  
pp. 101-106
Author(s):  
R. K. Kurbanov ◽  
B. M. Bahamaev ◽  
E. V. Gorchakov ◽  
N. A. Gvozdetsky

The purpose of the research is study of the animal's body clinical status and changes in hematological parameters before and after treatment against sarcoptoidosis of cattle. Materials and methods. The experiment was performed on bull calves and heifers aged 6–10 months, medium finish, of 100–120 kg of body weight. The test animals were divided into three groups: two test groups and one control group of 15 animals each. Before the experiment and at 7, 14 and 21 days after treatment with acaricides, scrapings from the affected skin and blood were taken from animals of all groups for research. The first test group animals were treated with ivermectin subcutaneously at a dose of 5 ml per animal, and the second test group was treated with cydectin subcutaneously at a dose of 5 ml per animal. The control animals were not treated. Results and discussion. The conducted hematological studies found a decrease in erythrocytes and hemoglobin in sarcoptoidosis, which indicated a decrease in oxygen supply to the body, and, consequently, organs and tissues. The white blood cell differential was observed to have a noticeable decrease in monocytes and lymphocytes.


2017 ◽  
Vol 19 (74) ◽  
pp. 24-28
Author(s):  
N. I. Hradovych

Many authors noticed the actuality of fish hematological parameters usage as indices of anthropogenic influence. Blood system reflects the reaction of the body on the action of different ecological factors. The problem of heavy metals influence on hematological parameters of silver cap (Hypopthalmichtys molitrix) needs to be investigated. The aim of the work was studying of ecotoxical Plumbum and Cadmium influence on hematological indices of silver carp (Hypopthalmichtys molitrix) during the period exposition. The results of the investigations concerning the influence of Plumbum and Cadmium on some hematological indices of silver carp (Hypopthalmichtys molitrix) for 12 days exposition up to the action of these heavy metals are given in this article. Experimental part was realized at the Lviv research station of Institute of fisheries NAAS (Lviv oblast, Horodok region, Velykyi Lyubin). Experimental groups contained 10 two-years individuals each. Fish were adopted to laboratory conditions for 5 days under the temperature 19 ± 2ºС, рН = 7.3 ± 0.2, oxygen content 7–8 mg/l. Blood parameters were measured on the sixth and twelfth days at the control group and groups which were under the influence on the level of 2 and 5 MPC of the appropriate metal. It was proved that the influence of Plumbum and Cadmium causes the lowering of erythrocytes number, hemoglobin and corpuscular volume: the effect becomes stronger when he concentration increases and in time. The effect from intoxication by Cadmium comes faster than by Plumbum.


2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Khadijeh Mansouri-Habibabadi ◽  
Mahnoosh Fatemi ◽  
Fereshteh Ghandehari

Background: The reaction of immune cells to the introduction of pathogens into the body is an increase in reactive oxygen species, which leads to the induction of oxidative stress. Reducing the level of oxidative stress through the use of antioxidants strengthens the immune system. Objectives: This study aimed to investigate the antioxidant effects of Saccharomyces cerevisiae and selenium-enriched S. cerevisiae against the oxidative stress induced by Pseudomonas aeruginosa in rats. Methods: A total of 36 rats were randomly divided into six groups, including control (A), S. cerevisiae (B), S. cerevisiae enriched with selenium (C), P. aeruginosa infection treated with S. cerevisiae (D), P. aeruginosa infection treated with S. cerevisiae enriched with selenium (E), and P. aeruginosa infection (F). At the end of the treatment period, the blood samples were collected to evaluate hematological parameters, total antioxidant capacity, glutathione concentration, and glutathione peroxidase activity. Results: The concentration and activity of antioxidant agents in group F were significantly decreased compared to those of the control group; however, in groups D and E, the levels of the aforementioned factors showed a significant increase compared to those of the infected group. The number of white blood cells in group F showed a significant increase, compared to that of the control group. In other groups, the observed differences in antioxidant factors and blood parameters were not significant, compared to those reported for the control group. Conclusions: The results showed that the induction of oxidative stress by P. aeruginosa was partially reduced by treatment with yeast and selenium-enriched yeast. Further studies are essential to confirm the aforementioned results.


2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.


Author(s):  
Anastasiya G. Khotuleva ◽  
Mariya S. Kozyreva

Introduction. The most susceptible to lead is the hematopoietic system of hematopoietic organs due to lead inhibition of heme and globin synthesis and cytotoxic effect on the membrane of Mature red blood cells. The aim of study was to evaluate the informative value of the study of erythrocyte and reticulocyte parameters determined on modern hematological analyzers in patients working in contact with lead during medical and biological monitoring. Materials and methods. 45 employees of the lead battery processing plant and 30 persons of control group were examined. The level of lead in the blood was determined by atomic absorption spectrometry, δ-ALA in the urine-by the reaction of pyrol formation with acetylacetone in terms of gram of creatinine, the study of hematological parameters was performed on a Sysmex HT-2000i analyzer. Statistical processing of the results was performed using the program STATISTICA 10.0. Results. Significant changes in erythrocytic (RDW) and reticulocytic (RET, IRF, LFR, MFR, HFR, RET-He) parameters, erythropoietin in workers in contact with lead compared to the control group, changes in MCV, MCH, RDW, RET indicators in the group working in dynamics after 2 years were revealed. Associations of hematological parameters with biomarkers of exposure and effect (lead level in blood and ALA in urine) were revealed. Conclusions. Assessment of erythrocyte (MCV, MCH, RDW) and reticulocyte parameters (RET% and their distribution by maturity) in dynamics during periodic medical examinations of workers in contact with lead allows us to detect the development of hematological disorders at early stages.


Author(s):  
Ю.А. Бондарчук ◽  
О.В. Алексеева ◽  
И.И. Шахматов ◽  
Ю.Б. Лебедева ◽  
Е.Ю. Медведева

Введение. Психоэмоциональный стресс, связанный с риском для жизни и здоровья (витальный стресс), вызывает комплексную ответную реакцию всего организма. Система гемостаза, обеспечивающая жидкостные характеристики циркулирующей крови, играет существенную роль в формировании процессов адаптации или дезадаптации. Нарушения равновесия в процессах свертывания и противосвертывания вместе с изменениями микроциркуляции являются основой патогенеза острых и хронических заболеваний с развитием тромботических либо геморрагических осложнений. Цель исследования: оценить состояние системы гемостаза у крыс с разным уровнем двигательной активности после острой психогенной травмы в виде витального стресса. Материалы и методы. Исследования выполнены на 44 лабораторных половозрелых крысахсамцах линии Wistar, которые составили 2 экспериментальные группы с низкой (n 15) и высокой (n 15) двигательной активностью и контрольную группу интактных животных (n 14). Спонтанную двигательную активность оценивали с помощью теста открытое поле . В качестве острого психотравмирующего воздействия использовали модель психической травмы у крыс в виде витального стресса, вызванного переживанием гибели партнера от действий хищника. Результаты. Острое психотравмирующее воздействие у животных с низкой двигательной активностью вызывало угнетение агрегации тромбоцитов. В группе животных с высокой двигательной активностью была выявлена гиперкоагуляция по внешнему пути активации плазменного гемостаза, а также на конечных этапах коагуляции. В обеих экспериментальных группах наблюдали укорочение времени полимеризации фибринмономера, снижение уровня фибриногена, а также активности антитромбина III на фоне активации фибринолиза. Заключение. Изменения состояния системы гемостаза у крыс с разным уровнем двигательной активности после острого психоэмоционального стресса имели одинаковую направленность, но различную степень выраженности ответной реакции. Полученные результаты позволяют охарактеризовать однократное психоэмоциональное воздействие как не выходящее за рамки эустресса (по данным коагулограммы). Introduction. Psychoemotional stress associated with the risk to life and health (vital stress) causes a complex total body response. Hemostasis supports fluid characteristics of circulating blood and plays a significant role in the formation of adaptation or disadaptation processes. Imbalance in the processes of coagulation and anticoagulation with microcirculation changes are the basis of pathogenesis of acute and chronic diseases with the development of thrombotic or hemorrhagic complications. Aim: to assess hemostasis state in rats with different levels of motor activity after acute psychogenic trauma (vital stress). Materials and methods. The studies were performed on 44 laboratory matured Wistar male rats that were divided into 2 experimental groups with low (n 15) and high (n 15) motor activity and a control group of intact animals (n 14). Spontaneous motor activity was assessed using the open field test. A model of mental trauma was used for the formation of acute psychotraumatic effect in rats in the form of vital stress caused by the experience of partner death from a predator. Results. Acute psychotraumatic effect in animals with low motor activity caused inhibition of platelet aggregation. In animals with high motor activity, hypercoagulation was revealed in the external pathway of plasma hemostasis activation, as well as at the final stages of coagulation. Shortening of fibrin monomer polymerization time, decreasing of fibrinogen level and antithrombin III activity with fibrinolysis activation were observed in both experimental groups. Conclusion. After acute psychoemotional stress hemostasis changes in rats with different levels of motor activity had the same direction, but different intensity of response. The obtained results allow to characterize a single psychoemotional effect as not exceeding the limits of eustress (according to the coagulogram data).


2021 ◽  
Vol 6 (2) ◽  
pp. 227-235
Author(s):  
O. Litovchenko ◽  
◽  
I. Perova ◽  

In modern conditions there is a high need to improve methods for establishing the nature of the combined influence of factors using modern approaches for further development of prevention measures against the negative impact of factors on the body. The purpose of the study was to investigate the combined effect of electromagnetic radiation and low temperatures with subsequent determination of the level of contribution of each factor in the formation of biological effects within the experiment by mathematical analysis of data using the method of artificial intelligence. Materials and methods. The subchronic experiment (30 days) was performed on male rats. The animals were divided into groups: combined exposure to electromagnetic radiation (70 kHz, 600 V/m) and reduced temperature (40C), isolated exposure to reduced temperature, isolated exposure to electromagnetic radiation and a control group. The establishment of biological effects was performed at stages 5, 15 and 30 days of the experiment. Changes in the body were assessed by physiological, biochemical and immunological parameters of the blood (30 indicators). Data processing was performed using computational intelligence methods (Neuro-fuzzy system). Results and discussion. The combined effect of the factors was manifested by the following biological effects: intensification of peroxidation processes with simultaneous moderate suppression of antioxidant protection, intensification of lipid metabolism was characterized by dyslipoproteinemia, manifesting in: increase in triglycerides, cholesterol and its fractions. Changes of the immune system were decrease in the ability of neutrophils to phagocytosis at different stages of the experiment, imbalance of the activation of the system of reducing the concentration of C4 at the background of increased intensity of IgM and IgG synthesis. The method of determining the intensity of the factors, developed on the basis of factor and cluster analysis, allowed to determine that during the experiment the ratios between the factors changed, but the greatest contribution was made by reduced temperature by both biochemical parameters (63%) and immunological (53%) at the same time, the level of electromagnetic radiation contribution was 37% and 47%, respectively. Thus, the reduced temperature was the leading factor in the combined effect, which added 60% to the overall biological effect throughout the study, against the effect of electromagnetic radiation for which the level of contribution was only 40%. By means of the factor analysis informative indicators, making it possible to establish the characteristics of biological effects, and therefore leading indicators in formation of biological effects were the increase in concentration of DC with simultaneous decrease in concentration of SH-groups, increase in VLDL and suppression of oxygen-dependent metabolism of neutrophil-test. Conclusion. Thus, the tested mathematical approach allowed to determine the leading role of each of the studied factors under the conditions of their combined influence in different systems, which allows to predict probable appropriate reactions of the whole organism and gives a reasonable approach to the development of preventive measures


2022 ◽  
Vol 354 (11-12) ◽  
pp. 20-23
Author(s):  
S. V. Dezhatkina ◽  
N. A. Feoktistova ◽  
E. V. Pankratova ◽  
N. A. Provorova ◽  
E. S. Salmina

Relevance. Modern turkey crosses have a genetically determined high growth rate. These farm birds are very sensitive to even minor fluctuations in their diet, are susceptible to a deficiency of amino acids, protein, mineral elements and vitamins, which can contribute to a decrease in their productivity, the development of pathological processes and diseases. The use of modern technologies and scientific achievements has made it possible to prepare a new product — modified zeolite. This natural mineral is already free of impurities and microbes, with open pore windows, has a high ability to selectively exchange, and is obtained by various methods of activating zeolite in industrial conditions. At the same time, Ulyanovsk specialists have mastered the technology of enriching modified zeolite with useful substances.Methods. The aim of the work was to study the effect on the body of turkeys and the level of their productivity of additives based on modified zeolite enriched with amino acids. The experiment was organized for 60 days on 250 turkeys of the breed Hybrid Cread-mayker aged 55–60 days in the conditions of the Ulyanovsk region. The control group received the main ration (MR), the experimental group was given once a day in addition to the MR in the morning feeding in a mixture with mixed feed 5% additives of modified zeolite enriched with amino acids.Results. The inclusion of a supplement based on modified zeolite enriched with amino acids in the diet of turkeys does not have a negative effect on the hematological parameters of their blood, all indicators corresponded to the physiological norm. During the experiment in the 2nd group, the live weight of poultry was obtained larger by 8.70%, which amounted to 12,296 kg, respectively, more profit was obtained from the sale of turkey meat, total revenue was 133,210, and additional profit was 27,960 rubles, 2.41 rubles of profit was received for 1 ruble of costs. Тhe data indicate the normalization of mineral homeostasis in the body of turkeys and better absorption of nutrients in the feed diet.


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