scholarly journals Dynamics of blood morphological indicators of Wistar line rats under parenteral BLV infection

2021 ◽  
pp. 53-58
Author(s):  
A. V. Krasnikov ◽  
A. S. Belyakova ◽  
E. S. Krasnikova
Keyword(s):  
Aplastic Anemia ◽  
Wistar Rats ◽  
Lymphocytic Leukemia ◽  
Control Group ◽  
Experimental Animals ◽  
Laboratory Rats ◽  
Intraperitoneal Infection ◽  
Experimental Group

Hematological studies of Wistar rats with intraperitoneal infection of their lymphocytes from BLV-infected cows revealed markers characteristic of the leukemic process induced by the pathogen enzootic leukemia in cattle. In 75% of experimental animals, lymphocytic leukemia and neutropenia were detected. The number of lymphocytes in the blood of rats of the experimental group was 17-36 % more than in the control group, leukocytes in average by 30 %. The animals of the experimental group showed signs of erythrocyte aplasia, hemolytic or aplastic anemia. Allergy markers were observed in individual rats. This allows us to recommend an intraperitoneal method of infecting laboratory rats with suspended lymphocytes from infected livestock for rapid and informative reproduction of experimental BLV infection.

scholarly journals МОРФОМЕТРИЧНІ ОСОБЛИВОСТІ СТІНОК ШЛУНОЧКІВ ТА МІЖШЛУНОЧКОВОЇ ПЕРЕГОРОДКИ СЕРЦЯ ЩУРІВ У НОРМІ ТА ПІСЛЯ ВНУТРІШНЬОПЛІДНОЇ ДІЇ АНТИГЕНУ

2018 ◽  
Author(s):  
O. A. Hryhorieva ◽  
A. V. Cherniavskyi
Keyword(s):  
Interventricular Septum ◽  
Control Group ◽  
Serial Sections ◽  
Connective Tissues ◽  
Experimental Animals ◽  
Laboratory Rats ◽  
Morphometric Features ◽  
Experimental Group ◽  
Newborn Animals ◽  
Intact Rats

Recently diseases of cardiovascular system in children take one of the first places in Ukraine.The aim of the study – studying the morphometric features of walls and interventricular septum thickness of rat’s heart in normal conditions and after antenatal antigen impact.Materials and Methods. 144 hearts of laboratory rats were investigated. They were divided into 3 groups: I group – intact rats, ІІ – control group, that get intrauterine injection of Sodium Chloride solution 0.9 % 0.05 ml on the 18th day of antenatal development. III – the experimental group of rats, who were injected by 0.05 ml of anatoxin in a similar method. Serial sections were stained with hematoxylin and eosin.Results and Discussion. In the experimental group in newborn animals the indices of the thickness of right ventricle, left ventricle and interventricular septum are much lower than in the control. This tendency is observed until the 21st day, and on the 45th day all thickness indicators were significantly higher in experimental animals. Obtained results can be related with changes in the ratio of muscle and connective tissues by reducing of the first and increasing of the second. Wall’s thickening in experimental animals on the 45th day can be considered as a development of hypertrophic cardiomyopathy, which is one of the manifestations of UCTD in the heart.Conclusions. Intrauterine antenatal administration of the antigen may cause a disturbance in the formation of the connective tissue of the heart, which in the future may lead to decreasing of the adaptive capacity of the myocardium.

scholarly journals The oxygen-induced retinopathy as an experimental model of retinopathy of prematurity

2013 ◽  
Vol 6 (3) ◽  
pp. 37-42 ◽  
Author(s):  
Olga Aleksandrovna Konikova ◽  
Vladimir Vsevolodovich Brzheskiy ◽  
Yelena Pavlovna Fedotova ◽  
Ruslan Abdulayevich Nasyrov
Keyword(s):  
Experimental Model ◽  
Retinopathy Of Prematurity ◽  
Wistar Rats ◽  
Clinical Signs ◽  
Control Group ◽  
Experimental Animals ◽  
Oxygen Induced Retinopathy ◽  
Significant Impairment ◽  
Experimental Group

The experimental model of retinopathy of prematurity was developed on the base of an oxygen-induced retinopathy in newborn. Wistar rats. This model was meant to investigate histopathological and functional manifestations of the disease. The study was performed on 60 newborn Wistar rats. The main experimental group included 34 animals with induced retinopathy of prematurity, the control group — 26 experimental animals. The predominating morphological manifestations of the oxygen-induced retinopathy were photoreceptor apoptosis, and the development of pathological intraretinal vascularization. Histological and electrophysiological changes were also detected even before the formation of clinical signs of retinopathy. There was a significant impairment of immature retina architectonic after induced hyperoxia.

REACTION OF CD68-POSITIVE RAT LIVER AND SPLEEN CELLS ON SILICON INTAKE WITH DRINKING WATER

2021 ◽  
pp. 34-43
Author(s):  
Evgeniia A. Grigoreva ◽  
Valentina S. Gordova ◽  
Valentina E. Sergeeva ◽  
Alina T. Smorodchenko
Keyword(s):  
Drinking Water ◽  
Cytoplasmic Membrane ◽  
Unit Area ◽  
Morphological Changes ◽  
Morphological Characteristics ◽  
Control Group ◽  
Silicon Compound ◽  
Average Cell ◽  
Laboratory Rats ◽  
Experimental Group

The article presents data on the long-term effect (nine months) of a silicon compound supplied with drinking water – nonahydrate sodium metasilicate (10 mg/l in terms of silicon), on CD68-positive macrophages in the liver and spleen of laboratory rats. Changes in the morphological characteristics of this cell population were found. There was a decrease in the average cell area (in the liver of the control group of rats, the average macrophage area was 179.23±5.94 microns2, and in the group receiving silicon with drinking water – 117.04±3.35 microns2; in the spleen-136.02±3.93 microns2 and 103.44±2.8 microns2, respectively). Macrophages in the liver preparations of the experimental group of rats had a fewer processes and a darker cytoplasmic membrane. The number of macrophages in the liver per unit area was comparable, for the control group of rats it was 18.78±1.24, and for the rats that received with water with the addition of silicon – 19.41±0.75 cells. CD68+ macrophages of the red splenic pulp in laboratory rats that received silicon also underwent the following morphological changes: they were located in a denser way and had fewer processes, while the number of macrophages per unit area was 73.7±2.3 for the control group, 91.6±5.0-for the experimental group, respectively. The distance between them did not change. There was a change in the intensity of CD68 expression on the surface of the cytoplasmic membrane and in the cytoplasm of liver and spleen macrophages. These changes can be interpreted as the adaptive ability of liver and spleen macrophages to silicon introduced with drinking water. Given the heterogeneity of the macrophage population in the liver and spleen, further studies using markers for different subpopulations of macrophages are needed to clarify their role in the response of tissues to silicon supplied with drinking water.

scholarly journals ASSESSMENT OF IMMUNOMODULATORY POTENTIAL OF AN AYURVEDIC FORMULATION, NIROCIL SYRUP IN WISTAR RATS

2020 ◽  
pp. 154-158
Author(s):  
DINESH DILIP GHADIGAONKAR ◽  
MUKESH B CHAWDA ◽  
KAPIL S THAKUR
Keyword(s):  
Wistar Rats ◽  
Animal Ethics ◽  
Complete Blood Count ◽  
Treated Group ◽  
Control Group ◽  
Differential Leukocyte Count ◽  
Experimental Animals ◽  
Prior Approval ◽  
Hemagglutination Titer ◽  
Immunomodulatory Potential

Objective: This study aims to assess the immunomodulatory potential of an Ayurvedic formulation, Nirocil syrup, in Wistar rats. Methods: The experiments were conducted on Wistar rats with prior approval from the Institutional Animal Ethics Committee. Nirocil syrup was administered for 6 weeks to experimental animals. Parameters such as hemagglutination titer, histopathology of immunological organs, complete blood count, differential leukocyte count, and immunological paw edema were recorded and compared with controlled (untreated) and becozinc treated groups. Results: Nirocil treated group significantly enhanced the antibody titer in comparison to the control group. The results are supported by the increase in blood lymphocyte count and antigenic stimulation in immunological organs (spleen). Nirocil syrup enhanced antibody formation and suppressed the immunological edema in experimental animals. Conclusions: The study concludes that the Ayurvedic formulation Nirocil syrup has immunopotentiating activity.

scholarly journals Impact complexes nanokarboksylativ and drug Kvatronan-Se on hematological parameters of blood of experimental animals

2017 ◽  
Vol 19 (74) ◽  
pp. 123-126
Author(s):  
N. B. Seba ◽  
M. A. Khomenko
Keyword(s):  
Blood Cells ◽  
Hematological Parameters ◽  
Live Weight ◽  
Control Group ◽  
Experimental Animals ◽  
Group I ◽  
Control Research ◽  
Research Experiment ◽  
The Village ◽  
Experimental Group

In this paper present the results of research of influence of the preparation «Kvatronan-Se» and carboxylates of Se, Cu, Mn, Cr, Ge in different combinations on haematological parameters of blood of experimental animals. Study was carried out on the basis of PC Haleks-Agro. It is located in the village Gul'sk of Novograd Volynskiy district of Zhytomyr region. In the farm to bred of Simmental cows. For the experiment was formed four groups. We took into account age, live weight of 650–700 kg and the average milk yield 5000–6000 kg. Animals is located in identical conditions of feeding and maintenance. Research experiment was carried out on animals couples counterparts.  Preparations introduced animals three times at 10–12 days after insemination. The cows first experimental group were injected complex nanokarboksylativ Ge, Cu, Mn and Cr, second – drug Kvatronan–Se and animals third experimental group was administered a complex composed of Se, Cu, Mn, Cr. On 13 day after insemination in experimental animals were taken blood from tail vein and examined the contents of hematological parameters. Established that injection nanokarboksylativ enhance the fertility of cows in the first and third group, the figure rose to 20% in the second by 40% compared with the control. Research hematological parameters blood  animals shows that after entering content drugs of blood cells had minor changes but remained within the physiological norm. The results show that in  concentration monocyte the second group  was at 5.53% (P > 0.01) higher compared to the control group and 2.3% compared to the first and third. The content of lymphocytes in this group decreased by 26.3% (P > 0.05), 22% and 16% relative to the control, the first and third groups. Also, it should be noted that the hemoglobin in the experimental groups decreased in group I by 7.9% in the II – 3.9% and III by 7.3% compared with the control group. Also, these groups distinguished downward trend eosinophils 1.8%, 1.5%, 2.05%. Then, as the number of segment-nuclear neutrophils contrast, in the first group increased by 18.2% in the second and third at 16.9% comparatively control. The number of monocytes in the second group doslfidniy the suspicion was higher by 66.3% and 0.3% higher than the physiological norm – it may indicate a high immune response.

scholarly journals Bisphosphonate’s Effect on Tongue Mucosa: An Experimental Electron Microscopy Study

Medicina ◽  
2020 ◽  
Vol 56 (2) ◽  
pp. 51
Author(s):  
Theodora Papamitsou ◽  
Antonios Morsi-Yeroyannis ◽  
Anastasios Papanastasiou ◽  
Nikolaos Bakalopoulos ◽  
Eva-Maria Dietrich ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Intercellular Space ◽  
Wistar Rats ◽  
Middle Layer ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Control Group ◽  
The Past ◽  
Transmission Electron ◽  
Experimental Group

Background and objectives: Bisphosphonates (BPs) are selective inhibitors of osteoclasts, used for the treatment of bone disorders. The objective of this study is to investigate the possible effects of BPs on the tongue’s mucosa. Materials and Methods: Specimens of the tongue of 20 female 12-month old Wistar rats were taken. Ten were used as control group, while in the remaining alendronate (Fosamax, Merck) was administered per os from 13 weeks. Observation of the harvested samples was made by Transmission Electron Microscopy (TEM). Results: In the experimental group, focal alterations were observed to various extent in all specimens. The basement membrane was intact. Furthermore, an increase at the intercellular space was observed, predominantly at the middle layer, and the desmosomes were disorganized. In the lamina propria focal edema was observed. Conclusions: Investigation on the effect of BPs on the tongue’s mucosa through TEM hasn’t been documented in the past. According to our results, BPs seem to cause mild mucosal lesions on the tongue.

Observations on the role of nutrition in coat shedding in cattle

1958 ◽  
Vol 50 (1) ◽  
pp. 110-112 ◽  
Author(s):  
N. T. M. Yeates
Keyword(s):  
The Other ◽  
Control Group ◽  
Experimental Animals ◽  
Normal Colour ◽  
Experimental Group

The coat changes of an experimental group of four undernourished Shorthorn heifers have been compared with those of a control group of four well-fed heifers.Low nutrition impeded seasonal shedding in three of the four experimental animals, and the hair which was retained into the summer months appeared lifeless and bleached. One animal's hair and shedding were normal, despite low nutrition.Two animals of the control group also partially retained their hair in the summer, but it was of normal colour, good lustre, and vital appearance.It is concluded that plane of nutrition influences shedding, though some individuals within a breed are less affected than others. Two distinct varieties of coat retention were observed: one was of nutritional origin, the other inherent. Possible explanations of the differences are suggested.

scholarly journals Consequences of Dental Occlusion Enhancement by Means of Metal Crowns on the Animal Model

2019 ◽  
Vol 69 (12) ◽  
pp. 3517-3519
Author(s):  
Ana Ispas ◽  
Antarinia Craciun ◽  
Liana Lascu ◽  
Marcela Elisabeta Barbinta Patrascu ◽  
Mariana Constantiniuc
Keyword(s):  
Oxidative Stress ◽  
Animal Model ◽  
Free Radicals ◽  
Wistar Rats ◽  
Vertical Dimension ◽  
Dental Occlusion ◽  
Control Group ◽  
Experimental Group ◽  
Plasma Malondialdehyde

The purpose of this study was to determine whether there is a correlation between induced occlusal trauma and the occurrence of oxidative stress in the hippocampus. Twenty Wistar rats were randomized into three experimental groups and one control group. Animals in the experimental group were cemented modified crowns on molars to induce occlusal trauma in 7, 14 and 30 days. To evaluate the oxidative stress, blood was drawn from the hippocampus at 7, 14 and 30 day intervals. Oxidative stress was evaluated using the following specific tests: determination of plasma malondialdehyde and serum glutathione values. The results of the study demonstrate that malocclusion experienced by raising the vertical dimension in rats resulted in significant reductions in antioxidants and increase level of free radicals.

scholarly journals Microanatomical and biochemical changes of the cerebellum following ethanol gavage in adult Wistar rats

2019 ◽  
Vol 8 (2) ◽  
pp. 1662-1669
Author(s):  
I.M. Usman ◽  
I.A. Iliya ◽  
A.E. Ivang ◽  
F Ssempijja ◽  
A.O. Ojewale ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Sialic Acid ◽  
Purkinje Cells ◽  
Wistar Rats ◽  
Histological Study ◽  
Ethanol Exposure ◽  
Biochemical Changes ◽  
Control Group ◽  
Experimental Animals ◽  
Dose Dependent

Ethanol consumption has been linked with social and medical problems, coupled with damage of multiple organs including the cerebellum. The present study is aimed at investigating the histological and biochemical changes in the cerebellum of Wistar rats associated with ethanol exposure. The experimental animals were grouped into five groups designated as Group 1 which served as the control group and was given distilled water, Groups 2,3,4 and 5were given 40%, 25%, 12% and 5% v/v of ethanol respectively. Each of the experimental animals was administered 10mls/kg body weight of the stock solution for 42days after which the animals were sacrificed humanely. The cerebellum was removed, fixed in Bouins fluid for histological study while brain homogenates were prepared and used for the biochemical studies. Data was analyzed using one-way ANOVA and Tukey HSD Post-Hoc comparison test was used to determine where the difference lies. Oxidative stress studies showed significant increase and decrease in some oxidative stress markers when compared to the control group (p<0.05). The sialic acid studies showed a dose dependent decrease in the mean sialic acid concentration of the cerebellum across the groups when compared to the control (p<0.05). The histological studies showed the following changes; necrotic Purkinje cells with reduced linear distribution of Purkinje cells, in section of the cerebellar tissue of rats in Groups 2 and 3 with sections from Groups 4 and 5 remaining relatively normal when compared to the slide from the control group. Exposure to ethanol from the present studies showed a dose dependent effect on the cerebellum, as manifested in the histological and biochemical studies.Keywords: Ethanol gavage, Histological, Biochemical changes, Cerebellum

scholarly journals Influence of the supplement «Press-Acid» on protein-mineral metabolism and resistance of piglets

2018 ◽  
Vol 20 (83) ◽  
pp. 320-324 ◽  
Author(s):  
N.V. Chеrniy ◽  
E.V. Matsenko ◽  
Yu.A. Shchepetilnikov ◽  
Yu. V. Maslak ◽  
O.S. Machula ◽  
...  
Keyword(s):  
Blood Serum ◽  
Mineral Metabolism ◽  
The Body ◽  
Control Group ◽  
Immunological Parameters ◽  
Oxidative Reaction ◽  
Experimental Animals ◽  
Growth Energy ◽  
First Time ◽  
Experimental Group

The aim of this study was to determine the effect of supplement «Press-Acid» on some parameters of mineral and protein metabolism and resistance of piglets. The study was done in condition «Meta» on two groups of piglets of the F-1 (BWхL) genotype. There were determined indexes of bacterial and lysocim activity of blood serum, calcium and phosphorus in piglets at the age of 21–30–45–75 days. Effect of supplement on the growth rate, morbidity and safety of pigs were revealed. We used hygienic, zootechnical, hematological, biochemical, immunological and statistical methods of analysis. The influence of «Press-Acid», which consist of formic, lactic, citric and fumaric acids, was established for the first time. The concentration of calcium in blood serum of experimental group of piglets were lower than in animals of control group. The level of phosphorus increased in blood serum of experimental animals on 11.83% (30 day), on 3.74% (45%), on 17.65% (75 day) respectively. Concentration of hemoglobin and the amount of erythrocytes increased on 11.8% and on 1.82% (30 day) in animals that feed the supplement. There were established the increase of viability of the pigs with gastro-intestinal diseases which were given the supplement in comparison with that, who did not feed it. Severity of diseases was determined using the Melenberg coefficient which did not higher than 1.2–2.4 score, it was lower on 6,0–9,3 unit than in control group. Using the supplement allowed to increase the intensity of growth of piglets by 3.7% (45 day) and 9.4% (75 day) respectively. Concentration of total protein, albumines and globulins increased on 8.66%, 9.90%, 7.3% respectively. The activity of alaninaminotransphaerasae in the blood serum of experimental animals were lower on 3.45% than in control piglets. Lysocym and bacterial activity of blood serum were higher in experimental group of piglets. Feeding piglets with addition supplement Press Acid promotes higher grow rates in experimental animals, that can be explained increases of oxidative-reducing processes in them organism. Feeding piglets with acidifier «Press-Acid», «Nifulin», zinc oxide, probiotics «Lactisan Complex» promotes growth energy, increase of morphological, biochemical and immunological parameters which indicates a higher level of oxidative reaction in the body. A low coefficient of Melenberg is recorded in the piglets at the age of 1 day. Safety was within 92.1–97.0%. That indicates a more successful elimination of complexes of protein, mineral substances, humoral protection in blood of experimental group of animals.

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