scholarly journals Enterosgel role in neurodegenerative changes in the retina rats under the influence of Cr (VI) - induced retinopathy by study morphological changes in dynamic

2021 ◽  
pp. 14-20
Author(s):  
Olena Kuzenko ◽  
Yevhen Kuzenko ◽  
Yuri Demin
Keyword(s):  
Drinking Water ◽  
Morphological Changes ◽  
White Male ◽  
Degenerative Changes ◽  
Male Rats ◽  
Control Group ◽  
Fiber Layer ◽  
Experimental Conditions ◽  
Typical Structure ◽  
Ganglion Neurons

Chromium galvanic production have leaded to biosphere pollution. Therefore advisable to study of role in the neurodegenerative development in retinal diseases under experimental conditions. The aim is to study the Enterosgel effect on morphological changes in rats retina with Cr(VI) – induced retinopathy. Materials and methods. An experimental study had carried out on 72 outbred white male rats. The rats had divided into 3 groups: I – control group of intact rats (n = 24). Control rats were received drinking water, II group – rats (n = 24), were received drinking water with Cr (VI) (K2Cr2O7) – 0.02 mol/L, III group – animals (n = 24) were received drinking water with K2Cr2O7– 0.02 mol/L and hydrogel methylsilicic acid (Enterosgel) at a dose of 0.8 mg/kg per day as a corrector. The animals had been decapitated under ether anesthesia. The retina had been studied on days 20, 40 and 60 of the experiment. Morphologically and morphometrically they had analyzed. Results. According to histological studies, it has proved that Cr (VI) causes dystrophic and degenerative changes in all rats retina layers. They increase as the duration of the experiment. The use of Enterosgel as a corrective therapy showed positive results in restoring the morphological structure of rats retina. After Enterosgel 20 days using as a corrector of Cr (VI) exposure, there is a barely noticeable swelling of the outer and inner nuclear layers. Other layers of the retina, morphologically, look undamaged. Forty days Enterosgel treatment have outer and inner nuclear layer edema of retina of animals persists but does not increase. It is easy noticeable swelling of the outer and inner layers of mesh, but no signs of damage processes of cell populations nuclear layers. State ganglionic layer and nerve fiber layer entirely satisfactory. These pathological changes are not critical. After 60 days from the beginning of loading of Cr (VI) and application of Enterosgel in the retina of rats there are initial degenerative changes in the photosensory layer. Cystic dilated outer segments of rods and cones were visible throughout, and areas of their fragmentation were observed. Ganglion neurons are not damaged, but their axons appear somewhat thickened and fluffy. But in general, the typical structure of the retina is preserved. Conclusions. Chromium-induced toxicity in rats is characterized by pronounced histological and morphometric changes and retinal thickness, which appear after 20 days, increase by 40 days and acquire maximum transformations after 60 days of the experiment. The use of Enterosgel improves picture morphological structures of the retina in rats under the influence of Cr (VI). The changes were expressed on days 20 and 40, which indicates the presence of protective properties for the retina

Oxidative stress and antioxidant enzyme levelsin the blood serum of white mice when exposed to iron and manganese in drinking water under experimental conditions

2021 ◽  
Author(s):  
O.V. Frolova ◽  
S.V. Ermolaeva ◽  
I.A. Tumozov
Keyword(s):  
Oxidative Stress ◽  
Drinking Water ◽  
Blood Serum ◽  
Antioxidant Defense ◽  
Glutathione Transferase ◽  
White Male ◽  
Control Group ◽  
Enzymatic Antioxidants ◽  
Experimental Conditions ◽  
Iron And Manganese

The object of the study of enzymatic antioxidants in the blood serum of white mice were 30 outbred white male and female mice of the same age and approximately of the same weight. The animals were divided into 3 groups: one control group and two experimental ones in which the mice consumed water with a high content of total iron and manganese (II) ion (over 5 MPC).This study revealed that the activity of glutathione transferase as a marker of antioxidant defense increased among the male mice in the experimental group after experiencing a 12-week-long intoxication, however the level of malondialdehyde in their blood serum indicated insignificant oxidative stress. Keywords: iron, manganese, drinking water, glutathione transferase, malondialdehyde, antioxidant defense, oxidative stress.

scholarly journals Morphological Changes in the Hepatic Tissue at the Impact of Industrial Copper-bearing Dust in the Experiment

2020 ◽  
Vol 8 (E) ◽  
pp. 653-656
Author(s):  
Khamida R. Abdikadirova ◽  
Kymbat Ye. Amreyeva ◽  
Saule B. Zhautikova ◽  
Olga A. Kostyleva ◽  
Fatima S. Abikenova ◽  
...  
Keyword(s):  
Liver Tissue ◽  
Morphological Changes ◽  
White Male ◽  
Male Rats ◽  
Hepatic Tissue ◽  
Control Group ◽  
Cu Content ◽  
Group 2 ◽  
The Impact ◽  
Dual Core

BACKGROUND: It is known that an increased intake of copper (Cu) has an adverse effect, and above all leads to the defeat of parenchymal organs, including liver tissue. AIM: This study the morphological changes in the hepatic tissue at the impact of polymetallic Cu dust. METHODS: An experimental study was carried out on the outbred white male rats. Dust was injected once intratracheally at a dose of 50 mg. For dynamic observation, the animals were killed in 1, 3, and 6 months with the control group using instant decapitation. The Balkhash industrial polymetallic dust with a predominant Cu content (Cu-0.6%) was used for the study. Morphological changes were assessed using histological and morphometric methods. RESULTS: Morphometric examination of liver tissue at 30 days showed Vv necrosis increasing in 320 times in Group 2 (p < 0.001), Vv infiltrates – in 121 times (p < 0.001), Vv dystrophic altered hepatocytes – in 19.91 times (p < 0.001), Vv dual-core cells – in 23 times (p < 0.01), and Vv fibrosis – in 2.82 times (p < 0.001) in comparison with Group 1. Vv portal tracts are not reliably changed. In 90 days, there were also the following morphometric parameters increasing in comparison with the control group: Vv necrosis – in 522 times (p < 0.001), Vv infiltrates – in 395 times (p < 0.001), Vv dystrophic altered hepatocytes – in 26.7 times (p < 0.001), Vv dual-core cells – in 314 times (p < 0.01), and Vv fibrosis – in 13.27 times (p < 0.001). On the 180 day of the experiment, there was the increasing of Vv infiltrates in 421 times (p < 0.001), Vv dystrophic altered hepatocytes – in 34.09 times (p < 0.001), Vv dual-core cells – in 411 times (p < 0.001), and Vv fibrosis – in 54.09 times (p < 0.001) CONCLUSION: The impact of polymetallic dust with 0.6% Cu concentration at the early stages leads to the changes in the liver in the form of reactive hepatitis with the following transformation into portal-type hepatitis.

scholarly journals STRUCTURAL CHANGES OF LONG TUBULAR BONES OF MATURE RATS UNDER THE HYPERGLYCEMIA

2021 ◽  
Vol 74 (9) ◽  
pp. 2052-2059
Author(s):  
Alina O. Ponyrko ◽  
Valentyna I. Bumeister ◽  
Serhii M. Dmytruk ◽  
Olha S. Yarmolenko ◽  
Tetiana P. Teslyk ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Structural Changes ◽  
Morphological Changes ◽  
White Male ◽  
Male Rats ◽  
Control Group ◽  
Cross Sectional ◽  
Left Femur ◽  
Increased Risk ◽  
Tubular Bones

The aim: To evaluate morphological changes in long tubular bones of mature rats under the influence of experimental hyperglycemia. Materials and methods: The study was conducted on 140 nonlinear white male rats divided into two groups. The experimental group included rats that were introduced into a state of hyperglycemia by a single intraperitoneal injection of an alloxan dihydrate solution at a dose of 150 mg / kg body weight in 0.9% sodium chloride. The control group included rats that were injected with a similar volume of 0.9% sodium chloride one time intraperitoneally. The animals were taken out of the experiment on the 2nd, 30th, 60th, 90th, 120th, 150th and 180th day. Right and left femur and humerus were studied by morphometric and histological methods. Results: Under conditions of prolonged uncontrolled hyperglycemia in mature rats, there is a slowdown in the growth rate of length and thickness of femur and humerus. This is indicated by a significant decrease in the length of bone and its diaphyses, as well as by a decrease in the cross-sectional area of the diaphysis, the width of the proximal and distal epiphyses, starting from 120 and 90 days of the experiment, respectively. The relative area of trabecular tissue, thickness of trabeculae and epiphyseal cartilage decreases in comparison with animals of the control group. The diameter of osteons and their channels increases in cortical tissue. Changes in the microarchitecture of the trabecular and cortical compartments of femur and humerus under conditions of hyperglycemia are similar and are characterized by a reduced bone mass, bone disorder progression and remodeling disorders. Conclusions: Prolonged uncontrolled experimental hyperglycemia leads to slow growth of femur and humerus in mature rats, which is accompanied by an increase in microarchitecture disorder of the trabecular and cortical compartments, causing miniaturization of bones and, consequently, violation of their biomechanical properties and increased risk of fractures.

Effect of Turmeric and Ginger on Lipid Profile in Male Rats Exposed to Oxidative Stress

2019 ◽  
Vol 10 (01) ◽  
Author(s):  
Eman A. Al-Rekabi ◽  
Dheyaa K. Alomer ◽  
Rana Talib Al-Muswie ◽  
Khalid G. Al-Fartosi
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Drinking Water ◽  
Lipid Profile ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Male Rats ◽  
Control Group ◽  
Very Low Density Lipoprotein ◽  
Low Density

The present study aimed to investigate the effect of turmeric and ginger on lipid profile of male rats exposed to oxidative stress induced by hydrogen peroxide H2O2 at a concentration of 1% given with consumed drinking water to male rats. Methods: 200 mg/kg from turmeric and ginger were used, and the animals were treatment for 30 days. Results: the results showed a significant increase in cholesterol, triglycerides, low density lipoprotein (LDL), very low density lipoprotein (VLDL), whereas it explained a significant decrease in high density lipoprotein (HDL) of male rats exposed to oxidative stress when compared with control group. the results showed a significant decrease in cholesterol, triglycerides, (LDL), (VLDL), whereas it explained a significant increase in (HDL) of rats treated with turmeric and ginger at dose 200 mg/kg when compared with male rats exposed to oxidative stress.

PROTECTIVE EFFECT OF SOME SALTS 2-AMINOETHANESULFONIC ACID IN AN EXPERIMENTAL MODEL OF DEGENERATIVE SPINAL CORD INJURY

2020 ◽  
pp. 41-47
Author(s):  
Semeleva E.V. ◽  
Blinova E.V. ◽  
Zaborovsky A.V. ◽  
Vasilkina O.V. ◽  
Shukurov A.S.
Keyword(s):  
Spinal Cord ◽  
Morphological Changes ◽  
Male Rats ◽  
Zinc Salt ◽  
Control Group ◽  
Morphological Studies ◽  
Cord Injury ◽  
The Central Nervous System ◽  
Acid Compound ◽  
Lateral Sclerosis

In this work, we studied the pharmacological activity of zinc and magnesium salts of 2-aminoethanesulfonic acid in white non-linear male rats with amyotrophic lateral sclerosis, which was modeled by neurotoxicantsimplication into the pelvic part of spinal cord. After the reproduction of the pathology in animals, the indices of motor activity were recorded in the Rotarod test, and morphological studies of spinal cord sections stained according to Nisl in the Belshovsky modification were carried out. It was shown that the magnesium salt of 2-aminoethanesulfonic acid (compound LHT-317) to a greater extent reduces the development of motor disorders in experimental animals compared with the control group on the 4th day of observation. The course of intravenous administration of the studied compounds of 2-aminoethanesulfonic acid did not inhibit morphological changes in the spinal cord that develop in degenerative-dystrophic pathology of the central nervous system: connections. Moreover, if, against the background of treatment with zinc salt, the total area of motor zones in animals of the experimental group exceeded that of control rats, then the number of motoneurons did not differ from the control.

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 Morphological changes of gastric and colonic mucosa in rats of different ages under the action of nanocrystalline cerium dioxide

2014 ◽  
Vol 68 (3) ◽  
pp. 46-50
Author(s):  
O. Iefimenko ◽  
O. Savchenko ◽  
T. Falalyeyeva ◽  
O. Kyric ◽  
M. Spivak
Keyword(s):  
Cerium Dioxide ◽  
Plasma Cells ◽  
Morphological Changes ◽  
Degenerative Changes ◽  
Control Group ◽  
Gastric Glands ◽  
Different Ages ◽  
Nanocrystalline Cerium Dioxide ◽  
Old Rats ◽  
Differentiation And Proliferation

We have studied the effect of nanocrystalline cerium dioxide (NCD) on the morphological state of the gastric mucosa and colon in rats of different ages. It was found the degenerative changes and dysregeneration (violation the ratio of value of major and parietal cells), atrophic or hyperplastic changes. NCD restored the processes of differentiation and proliferation of epithelial cells of gastric glands. In the control group of old rats mucosa of the colon was focal thinner, the cells had degenerative changes, it was observed the change in nuclear-cytoplasmic ratio of cells, were found foci of infiltration of lymphocytes, macrophages, plasma cells. NCD in old rats caused a decrease in the number of cells in a state of degeneration and apoptosis, increased proliferative activity of cells increased the number of goblet cells. Thus, NCD restored morpho-functional structure of the mucous of the stomach and colon.

scholarly journals Nanoparticles of zinc oxide defeat chlorpyrifos-induced immunotoxic effects and histopathological alterations

2019 ◽  
Vol 12 (3) ◽  
pp. 440-448 ◽  
Author(s):  
Sara S. Essa ◽  
Eiman M. El-Saied ◽  
Osama S. El-Tawil ◽  
Inas M. Gamal ◽  
Sahar S. Abd El-Rahman
Keyword(s):  
Zinc Oxide ◽  
Drinking Water ◽  
Interleukin 2 ◽  
Potential Effect ◽  
Male Rats ◽  
Control Group ◽  
Organophosphate Insecticide ◽  
Zno Nps ◽  
Macrophage Activity ◽  
Serum Lysozyme

Background and Aim: Chlorpyrifos (CPF) is a widely used organophosphate insecticide. Nanoparticles of zinc oxide (ZnO NPs) physically showed effective adsorbing property for some insecticides. The study was conducted to estimate the potential effect of ZnO NPs against CPF toxicity. Materials and Methods: Four groups of male rats were used; control group and three groups received drinking water contained 75 mg/L CPF, combined 75 mg/L CPF and 200 mg/L ZnO NPs, and 200 mg/L ZnO NPs, respectively. Results: CPF significantly decreased macrophage activity, serum lysozyme activity, and levels of interleukin-2 (IL-2) and IL-6; increased the percentage of DNA degeneration on comet assay of lymphocytes and significantly elevated hepatic and splenic malondialdehyde contents; and decreased their glutathione contents. The liver and spleen showed marked histological alterations after exposure to CPF with decreased expression of acetylcholinesterase. The coadministration of ZnO NPs ameliorated most of the undesirable effects of CPF, through elevation of macrophage and serum lysozyme activities, increased the levels of IL-2 and IL-6, corrected the oxidative stress markers, and alleviated most of the adverse effect exerted by CPF in liver and spleen tissues. Conclusion: The addition of ZnO NPs to CPF-contaminated drinking water may be useful as a powerful antioxidant agent against toxic damage induced by CPF particularly in individuals who are on daily occupational exposure to low doses of CPF.

New approach for reproductive toxicity assessment: chromatoid bodies as a target for methylmercury and polychlorinated biphenyls in prepubertal male rats

2020 ◽  
Vol 32 (10) ◽  
pp. 914
Author(s):  
M. S. Garcia ◽  
W. A. Orcini ◽  
R. L. Peruquetti ◽  
J. E. Perobelli
Keyword(s):  
Corn Oil ◽  
Morphological Changes ◽  
Synergistic Effects ◽  
Reproductive Toxicity ◽  
Treated Group ◽  
Male Rats ◽  
Seminiferous Tubules ◽  
Control Group ◽  
High Dose ◽  
Long Term Effects

This study investigated the reproductive toxicity of methylmercury (MeHg) and Aroclor (Sigma-Aldrich), alone or in combination, following exposure of prepubertal male rats considering the chromatoid body (CB) as a potential target. The CB is an important molecular regulator of mammalian spermatogenesis, primarily during spermatid cytodifferentiation. Male Wistar rats were exposed to MeHg and/or Aroclor , according the following experimental design: control group, which was administered in corn oil (vehicle) only; MeHg-treated group, which was administered 0.5mg kg−1 day−1 MeHg; Aroclor-treated group, which was administered 1mg kg−1 day−1 Aroclor; Mix-LD, group which was administered a low-dose mixture of MeHg (0.05mg kg−1 day−1) and Aroclor (0.1mg kg−1 day−1); and Mix-HD group, which was administered a high-dose mixture of MeHg (0.5mg kg−1 day−1) and Aroclor (1.0mg kg−1 day−1). MeHg was diluted in distilled water and Aroclor was made up in corn oil (volume 1mL kg−1). Rats were administered the different treatments from PND23 to PND53 by gavage, . The morphophysiology of CBs was analysed, together with aspects of steroid hormones status and regulation, just after the last treatment on PND53. In addition, the long-term effects on sperm parameters were assessed in adult animals. MeHg exposure increased mouse VASA homologue (MVH) protein levels in seminiferous tubules, possibly affecting the epigenetic status of germ cells. Aroclor produced morphological changes to CB assembly, which may explain the observed morphological defects to the sperm flagellum and the consequent decrease in sperm motility. There were no clear additive or synergistic effects between MeHg and Aroclor when administered in combination. In conclusion, this study demonstrates that MeHg and Aroclor have independent deleterious effects on the developing testis, causing molecular and morphological changes in CBs. To the best of our knowledge, this is the first study to show that CBs are targets for toxic agents.

scholarly journals Omega-3 Oil Ameliorate Histological and Ultrastructural Alterations Induced by Cadmium Chloride in Rats Testis

2020 ◽  
Vol 4 (1) ◽  
pp. 62-69
Author(s):  
Treefa F. Ismail ◽  
Falah M. Aziz
Keyword(s):  
Drinking Water ◽  
Tap Water ◽  
Occupational Exposures ◽  
Testicular Tissue ◽  
Male Rats ◽  
Control Group ◽  
Albino Rats ◽  
Omega 3 ◽  
Potential Threat ◽  
Ultrastructural Alterations

Cadmium (Cd) is considered to be one of the major environmental pollutants which have potential threat to human health. Reports of declining male fertility have renewed interest in the role of environmental and occupational exposures in the etiology of human infertility. Cd exposure led to obvious degenerative changes in testicular tissue. This study was performed to investigate the Cd-induced structural effects on the testes and to evaluate the possible protective effect of omega-3 oil in adult albino rats. Thirty adult male rats were used in the present work, divided randomly into five groups, six rats in each group; the first group was considered as a control group and left without treatment except the standard rat chow and tap water. The second group was given 40 mg/L of CdCl2 in drinking water while the third group was given 60 mg/L of CdCl2 in drinking water. The fourth group was given 40 mg/L of CdCl2 in drinking water plus omega-3 oil (4 g/kg diet), while the fifth group was given 60 mg/L of CdCl2 in drinking water plus omega-3 oil (4 g/kg diet), the Cd-treated rats showed dose-dependent histological and ultrastructural alterations which have been ameliorated after exposure to omega-3 oil. The present investigation concluded that omega-3 played a protective role against Cd-induced histopathological changes in rat testis.

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