scholarly journals Characteristic of Connective Tissue Fibers and Myofibroblasts Interstitium of the Kidneys in Rats Offspring Born to Females with Experimental Metabolic Syndrome

2021 ◽  
Vol 6 (2) ◽  
pp. 37-43
Author(s):  
O. A. Hryhoryeva ◽  
◽  
Ye. V. Korotchuk
Keyword(s):  
Metabolic Syndrome ◽  
Smooth Muscle Actin ◽  
Histochemical Staining ◽  
Collagen Fibers ◽  
Control Group ◽  
Albino Rats ◽  
Standard Diet ◽  
Calorie Diet ◽  
Cortical Substance ◽  
High Calorie

According to a number of studies, it is known that a woman's diet during pregnancy may be one of factors in the violation of nephrogenesis. Obesity in pregnancy may increase markers of fibrosis and the accumulation of extracellular matrix in the kidneys. The purpose of the study is to investigate the dynamics of the content of collagen fibers and myofibroblasts in the cortical and medulla of the kidneys of rat offspring. Materials and methods. The research was based according to the international bioethical regulations, 120 albino rats were involved in the study. The first group is experimental (MC-1): rats born to females with an experimental metabolic syndrome and after the start of self-feeding received a high-calorie diet up to 120 days of age. The second group is experimental (MC-2): rats that were obtained from females with an experimental metabolic syndrome, but after switching to self-feeding received a standard diet. The third group is a control group of rats with a standard diet and water regime ad libitum. Mason-tricolor histochemical staining was used to determine collagen fibers, and immunohistochemical reaction using mouse Smooth Muscle Actin monoclonal antibodies (αSMA) was used to detect myofibroblasts. Results and discussion. It was found that the content of collagen fibers in the kidneys of the studied groups gradually increases with increasing of observation period, reaching maximum values on the 120th day of the study, with a statistically significant predominance of values in animals of group MC-1 over control animals in cortical and cerebral matter. Also, control and experimental groups are characterized by a gradual increase in the relative area occupied by αSMA+ cells from the total area of the organ, with maximum values at the end of the study. At the same time, there was a statistically significant predominance of the experimental groups MC-1 and MC-2 in the cortical substance in comparison with control animals. Conclusion. The gradual growth of collagen fibers in the cortical and cerebral substance is probably associated with an increase in the content of αSMA+ myofibroblasts, which according to research are markers of fibrosis

scholarly journals MORPHOMETRIC, INSTRUMENTAL AND LABORATORY PARAMETERS OF FEMALE RATS WITH EXPERIMENTAL METABOLIC SYNDROME

2020 ◽  
pp. 20-25
Author(s):  
O. A. Hrygorieva ◽  
Y. V. Korotchuk
Keyword(s):  
Metabolic Syndrome ◽  
Water Regime ◽  
Female Rats ◽  
Control Group ◽  
Laboratory Parameters ◽  
The Metabolic Syndrome ◽  
Calorie Diet ◽  
Experimental Group ◽  
High Calorie Diet ◽  
High Calorie

The aim of the study – to learn the dynamics of changes of morphometric, instrumental and laboratory parameters in mature females rats with experimental metabolic syndrome. Material and Methods. 20 females of white, mature laboratory rats, aged 18–20 months were divided into 2 groups. The first one is an experimental group: 13 female rats with experimental metabolic syndrome; the second one  – control group: 7 intact rats, with standard food and water regime. When working with animals, the standards of the Council of Europe Bioethics Convention 1997, the European Convention for the Protection of Vertebrate Animals were observed. Instruments used during scientific research were subject to metrological control. The simulation of the metabolic syndrome occurred during 60 days. The females supported a special high-calorie diet (grain with margarine 82 % milk fat, corn and sunflower seeds). The water regime included a 20 % solution of fructose and regular water ad libitum, with change every other day. Also, during the first and the fourth weeks of the experiment, the female daily subcutaneously administered Dexamethasone solution at a dosage of 0.1 mg/kg. Results. Since the beginning of the experiment, female rats who received a special high-calorie diet showed a statistically significant increase in all morphometric and instrumental indexes compared to similar rats in the control group. An increase in body weight in the experimental group was found to be 28.93 % higher than the original weight, was observed arterial hypertension (141/85±5) mmHg, dyslipidemia: elevated total cholesterol (5.37±0.33) mmol/L and TG (2.55±0.24) mmol/L; elevated level glucose (8.52±0.17) mmol/L. The above indicators are criteria indicating the presence of metabolic syndrome in animals under study. Conclusions. The proposed model of experimental metabolic syndrome, which includes subcutaneous administration of Dexamethasone solution at a dosage of 0.1 mg/kg in the first and the fourth weeks of experiment, with a special high calorie diet and a 20 % solution of fructose, is an effective way to reproduce the metabolic syndrome in small rodents.

Effect of Propolis-Supplemented Diet on Body Composition and Endocrine Function of Adipose Tissue

2020 ◽  
Vol 19 (2) ◽  
pp. 217-221
Author(s):  
Maria Jesús Lisbona-González ◽  
Candela Reyes-Botella ◽  
Esther Muñoz-Soto ◽  
Maria Victoria Olmedo-Gaya, ◽  
Jorge Moreno-Fernandez ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Body Composition ◽  
Adipose Tissue ◽  
Endocrine Function ◽  
Control Group ◽  
Albino Rats ◽  
Standard Diet ◽  
Reduced Body ◽  
Esterified Fatty Acids ◽  
Wistar Albino Rats

Adipose tissue is an endocrine organ and has central role in interaction with other organs or tissues while propolis can induce lipolysis. Therefore, the aim of this study is to provide detailed information about adipose tissue homeostasis modifications and body composition during propolis supplement consumption. Twenty male Wistar albino rats (8 weeks) were divided into two groups of 10 animals each and fed for 90 days with two different types of diets: standard for the control group (diet C) and standard diet + 2% propolis (diet P). Thyroid hormones did not show differences, while ghrelin and adiponectin decreased in the group that was fed propolis. Insulin, leptin, and non-esterified fatty acids also increased along with reduced body weight and fat, in addition to increased lean mass when propolis was in the diet. We conclude that propolis could decrease ghrelin and adiponectin but increase non-esterified fatty acids and insulin secretion, which improves body composition.

A high calorie diet causes memory loss, metabolic syndrome and oxidative stress into hippocampus and temporal cortex of rats

Synapse ◽  
2015 ◽  
Vol 69 (9) ◽  
pp. 421-433 ◽  
Author(s):  
Samuel Treviño ◽  
Patrícia Aguilar-Alonso ◽  
Jose Angel Flores Hernandez ◽  
Eduardo Brambila ◽  
Jorge Guevara ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Metabolic Syndrome ◽  
Temporal Cortex ◽  
Memory Loss ◽  
Calorie Diet ◽  
And Oxidative Stress ◽  
High Calorie Diet ◽  
High Calorie

Comparative effects of intragastric Lys-Arg-Аrg-Lys-Pro-Gly-Pro peptides, warfarin, and acetylsalicylic acid on hemostasis indexes and blood glucose in development of metabolic syndrome in rats

2021 ◽  
pp. 52-59
Author(s):  
Л.А. Ляпина ◽  
Н.Ф. Мясоедов ◽  
Т.А. Шубина ◽  
Л.А. Андреева ◽  
Т.Ю. Оберган ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Blood Glucose ◽  
Acetylsalicylic Acid ◽  
Prothrombin Time ◽  
Carbohydrate Metabolism ◽  
Intragastric Administration ◽  
Calorie Diet ◽  
Time Test ◽  
High Calorie Diet ◽  
High Calorie

Введение. Препараты разной структуры - углеводной, пептидной, белковой оказывают значительный противосвертывающий эффект в кровотоке с одновременным улучшением углеводного обмена. Цель - изучение в сравнительном аспекте влияния препаратов разной структуры (пептида, производного диоксикумарина и ацетилсалициловой кислоты -АСК) на свертывание крови, изменение углеводного обмена при интрагастральном способе их введении крысам. Методика. Использовались стандартные коагулологические методы и способы определения уровня глюкозы крови крыс. Каждый из препаратов (пептид Lys-Arg-Arg-Lys-Pro-Gly-Pro, варфарин и АСК) вводили лабораторным крысам Wistar интрагастрально в эффективной дозе (100 мкг/кг - пептид и варфарин и 1 мг/кг - АСК) в течение 7 сут на фоне развития метаболического синдрома, индуцируемого высококалорийной диетой (ВКД). Определения производили через 20 и 168 ч после последнего введения препаратов при продолжающемся постоянном кормлении крыс ВКД. Результаты. Установлено, что как через 20 ч, так и через 168 ч после последнего введения пептида и АСК агрегация тромбоцитов имела тенденцию к снижению и составляла 72-76% (через 20 ч) и 81-66,7% (через 168 ч); фибринолиз статистически значимо повышался при действии пептида на 61-180%, АСК - на 15-41%, варфарина - на 14-34%; активированное частичное тромбопластиновое время значимо удлинялось под влиянием пептида и варфарина на 24-52 и 31-52% соответственно; свертывание крови по тесту протромбинового времени снижалось только под влиянием варфарина (на 12.3%); уровень глюкозы крови нормализовался под влиянием всех использованых препаратов и составлял 4,9-6,5 ммоль/л против 8.1-8.8 ммоль/л при метаболическом синдроме. Заключение. При сравнении действия пептида, варфарина и АСК установлены гипокоагуляционные и гипогликемические эффекты в разной степени. Максимальным антикоагулянтным и фибринолитическим действием обладал пептид; варфарин проявлял антикоагулянтное действие только по тесту протромбиновое время, ацетилсалициловая кислота обладала антитромбоцитарным и фибриндеполимеризационным действием. Drugs with different structure, carbohydrates, peptides, and proteins, can produce a significant anticoagulation effect and simultaneously improve carbohydrate metabolism. The aim of this study was to compare effects of drugs with different structure, a peptide, a dioxicoumarin derivative, and acetylsalicylic acid (ASA), on coagulation and changes of carbohydrate metabolism in intragastric administration to rats. Methods. Standard methods for studying coagulation and measuring blood glucose in rats were used. Each of the study drugs (Lys-Arg-Arg-Lys-Pro-Gly-Pro peptide, warfarin, and ASA) was administered to Wistar rats intragastrically at an effective dose (100 mcg/kg for the peptide and warfarin and 1 mg/kg for ASA) for 7 days during the development of metabolic syndrome (MS) induced by a high-calorie diet (HCD). Measurements were performed at 20 and 168 h after the last administration of the drugs with continuing HCD. Results. Both at 20 and 168 h after the last administration of the peptide and ASA, platelet aggregation showed a tendency to a decrease and was 72-76% (at 20 h) and 81-66.7% (at 168 h); fibrinolysis significantly increased under the action of the peptide, ASA, and warfarin by 61-180%, 15-41%, and 14-34%, respectively. Activated partial thromboplastin time significantly increased under the action of the peptide and warfarin by 24-52% and 31-52%, respectively; blood clotting as estimated in the prothrombin time test decreased only under the action of warfarin by 12.3%; blood glucose returned to a normal level under the action of each of the three study drugs and was 4.9-6.5 mmol/l vs. 8.1-8.8 mmol/l in MS. Conclusion. The peptide, warfarin, and ASA produced different degrees of the anticoagulation and hypoglycemic effects. The peptide had the strongest anticoagulation and fibrinolytic effects, warfarin produced an anticoagulant effect only according to the prothrombin time test, and acetylsalicylic acid exerted both antiplatelet and fibrin-depolymerizing effects.

scholarly journals The thiol-disulfide homeostasis and its role in the pathogenesis of the experimental alimentary obesity

2016 ◽  
Vol 15 (3) ◽  
pp. 419-423
Author(s):  
Mariya Marushchak ◽  
Inna Krynytska ◽  
Lyudmyla Mazur ◽  
Svitlana Yastremska ◽  
Nina Begosh
Keyword(s):  
Adipose Tissue ◽  
Medical Science ◽  
Redox System ◽  
Control Group ◽  
White Rats ◽  
The World ◽  
Calorie Diet ◽  
Alimentary Obesity ◽  
High Calorie Diet ◽  
High Calorie

Objective: According to WHO, about 30 % of people in the world are overweight that allows to characterize this disease as a new non-infection “epidemic” of the XXI century. More than 500 million people in the world are overweight and 250 million are obese. There is a clear tendency to increasing of alimentary obesity among people with different age, sex and nationality. The aim of the study is to investigate the thiol-disulfide homeostasis in liver tissue, adipose tissue and erythrocytes in the pathogenesis of experimental alimentary obesity.Materials and methods: 60 males, non-liner, white rats around 3 months of age with alimentary obesity were examined during the study. Experimental obesity was modeled by administering of sodium glutamate to the feed mixture in a ratio of 0.6:100.0 and adding high-calorie diet. The glutathione redox-system activity in erythrocytes, liver and adipose tissue were analyzed by the level of reduced glutathione (GSH), oxidized glutathione (GSSG), glutathione reductase (GR) and glutathione peroxidase (GP) activity.Results and Discussion: The data indicate a decrease in GSH level within 14 days of the experiment in all investigated tissues. The same trend was observed in animals on 28th day of the experiment: GSH index decreased in blood, adipose tissue and liver (P<0.05). The index of GSSG have increased on 28th day of the experiment in all investigated tissues vs control group (P<0.05). The ratio of the reduced and oxidized forms of glutathione contents was much lower vs control group in all the studied tissues within 28 days of the experiment. During additional investigation of the activity of thiol-disulfide system enzymes it was found that reducing the concentration of GSH in rats with alimentary obesity was due to the lack of thiol-disulfide system enzymes activity: GP and GR, which take part in the regeneration of GSH from GSSG.Conclusion: experimental alimentary obesity is characterized by a reduced redox state in blood, adipose and liver tissues, which is determinative in increasing the free radical reactions and accumulation of highly toxic lipoperoxides in the tissue substrates.Bangladesh Journal of Medical Science Vol.15(3) 2016 p.419-423

scholarly journals Aortae of Young Rats with Metabolic Syndrome Exhibit Enhanced Vasoconstrictor Activity Than Older Rats

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
R H Ali ◽  
N M B Gamil ◽  
A M Abdelrahman ◽  
M A Ahmed ◽  
G K Megahed ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Young Adult ◽  
Fasting Blood Glucose ◽  
Age Groups ◽  
Female Rats ◽  
Control Group ◽  
Albino Rats ◽  
Functional Changes ◽  
Vasoconstrictor Response ◽  
Nitrite Content

Abstract Background Metabolic syndrome (MetS) causes pathological remodeling of the heart and adjacent vessels. The functional changes in the big vessels in different age groups had not been fully delineated. Aim of the work The present study was planned to investigate aortic vasodilator and vasoconstrictor reactivity in young, adult and old female rats with MetS. Design: The experimental study was performed on 90 female albino rats randomized into 6 groups: young, adult and old rats with MetS and their respective control groups. Methods MetS was induced by feeding rats 41% fructose -containing diet and giving fructose solution (5 g fructose in 4 ml distilled water/day) by gavage in two sessions (2 ml/session). On the 8th week, all rats were sacrificed and were subjected to determination of body weight (BW), body mass index (BMI), absolute and relative visceral fat weight (VF), fasting blood glucose (FBG), plasma insulin (PI), homeostasis model of insulin resistance (HOMA-IR) and plasma lipid profile. All rats’ aortae were subjected to study of vascular reactivity to Potassium chloride (KCL), phenylephrine (PE) and acetyl choline (A.Ch) as well as estimation of nitrite content. Results On the 8th week of the study, all MetS groups developed criteria of metabolic syndrome as evidenced by the significant increase in final BW, BMI, absolute and relative VF weights, FBG, PI and HOMA-IR compared to their control group values. Also, MetS rat groups exhibited evident dyslipidemia in the form of significant increase in plasma levels of triglycerides, total cholesterol and significant decrease in HDL-cholesterol compared to their control group values. Aortae of young and adult MetS rat groups showed significant increase in their vasoconstrictor response to KCl and PE and decrease in A.Ch/KCL% and A.Ch/PE % compared to their controls, while old MetS rat group showed significantly increased vasoconstrictor response only to KCL compared to their controls. When compared to each other, young age MetS group had significantly higher vasoconstrictor response to PE compared to old MetS group despite comparable nitrite content. Conclusion Met.S causes functional vascular changes in all age groups with unexpectedly enhanced vasoconstrictor response in the young group compared to old.

scholarly journals Effects of different exercise loads on serum betatrophin (ANGPTL-8/lipasin) and cartonectin (CTRP-3) levels in metabolic syndrome

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Muhammed Emre Karaman ◽  
Cengiz Arslan ◽  
Mehmet Ferit Gürsu
Keyword(s):  
Metabolic Syndrome ◽  
Aerobic Exercise ◽  
Tap Water ◽  
Exercise Group ◽  
Anaerobic Exercise ◽  
Male Rats ◽  
Control Group ◽  
Standard Diet ◽  
Positive Effects ◽  
Significant Difference

Abstract Objectives The number of studies examining the circulating level change of betatrophin and cartonectin in metabolic syndrome applying different loads of exercise is limited. The purpose of the present study was to investigate how different loads of exercises regulate the betatrophin and cartonectin levels in metabolic syndrome induced rats. Methods A total of 24 Wistar-Albino male rats were used in the study. Rats were divided into four groups as follows; G1: control group (fed with standard diet and tap water), G2: metabolic syndrome group (without exercise application), G3: metabolic syndrome + aerobic exercise group (aerobic exercise applied), G4: metabolic syndrome + anaerobic exercise group (anaerobic exercise applied). Betatrophin and Cartonectin levels were determined by ELISA method in serum samples. Results There was a statistically significant difference in betatrophin levels between the groups and this differentiation was caused by G2 (p <0.05). Cartonectin levels were not significantly different between groups (p> 0.05). Conclusions It can be concluded that anaerobic exercises have more positive effects on glucose balance in metabolic syndrome than aerobic exercises, and by regulating betatrophin levels, anaerobic exercises indicate this effect.

scholarly journals Costus Root Extract Preserves Thyroid Hormones Levels, Thyroglobulin Expression and Thyroid Tissues in Rats Receiving Valproate Sodium

2020 ◽  
Vol 12 (4) ◽  
pp. 304-312
Author(s):  
Marwa Salah Mahmoud
Keyword(s):  
Thyroid Gland ◽  
Protective Effect ◽  
Collagen Fibers ◽  
Control Group ◽  
Albino Rats ◽  
Root Extract ◽  
Color Intensity ◽  
Valproate Sodium ◽  
Saussurea Lappa ◽  
Group I

BACKGROUND: Valproate sodium is an anticonvulsant drug. Saussurea lappa (costus) is a medicinal plant rich with antioxidants. This research aimed to assess the protective effect of costus root extract against valproate sodium-induced thyrotoxicity.METHODS: Eighty adult male albino rats were equally divided into four groups; group I: untreated control, group II: rats were given 200 mg/kg BW valproate sodium orally and daily for 8 weeks, group III: rats were given 300 mg/kg BW costus root extract orally and daily for 8 weeks, and group IV: rats were given combination of valproate sodium and costus root extract. After 8 weeks, blood samples were collected to evaluate T3, T4 and thyroid-stimulating hormone (TSH) levels. Thyroid gland samples were handled for light and electron microscopic investigation. The heights of follicular cells, area % of collagen fibers and color intensity of thyroglobulin immunoreaction were statistically analyzed. RESULTS: After being given valproate sodium as an induction, hormonal assay showed significant decrease in serum T3 and T4 and significant increase of TSH. Follicular and cellular alterations were shown by light and electron microscopes. Morphometric study revealed increased follicular cell height and area % of collagen fibers and decreased color intensity of thyroglobulin. In contrast, costus root extract appeared to have a protective role against valproate sodium-induced thyroid injury. Most of the changes induced by valproate sodium were not observed after supplementation with the plant root extract.CONCLUSION: Valproate sodium has serious effects on the function and structure of thyroid gland, and this study shows that costus root extract could have a protective effect against these effects.KEYWORDS: valproate sodium, rat, thyrotoxicity, Saussurea lappa

Effect of Propolis Administration on the Endocrine Functions and Histopathology of Pancreas in Streptozotocin-Induced Diabetic Rats

2019 ◽  
Vol 11 (12) ◽  
pp. 1155-1160
Author(s):  
Mohammed Al-Hariri ◽  
Tharwat Gamal Eldin ◽  
Mohammed Al-Harbi ◽  
Tarek Hashim ◽  
Rizwan Ahmad
Keyword(s):  
Blood Glucose ◽  
B Cells ◽  
Fasting Blood Glucose ◽  
Treated Group ◽  
Pancreatic Tissue ◽  
Negative Control ◽  
Untreated Group ◽  
Control Group ◽  
Albino Rats ◽  
Standard Diet

This study was performed to investigate the hypoglycemic properties of Propolis and their possible role on pancreatic's tissue. Diabetes mellitus was induced in 45 adult male albino rats and the animals were divided into three groups; Negative control group received standard diet; Positive group diabetic untreated group; Propolis treated group supplemented with (0.3 g/Kg/day) for 2 weeks after the induction of diabetes by streptozotocin. At the end of the experiment, blood was collected from the abdominal aorta. A heparinized tube was used for collection of plasma for measurement of lipid peroxidation products, insulin, glucagon and fasting blood glucose. Pancreas were isolated and stained with hematoxylin and eosin (HE), histoimmunological and morphometric factors were studied. The results of this study showed that Propolis was able to reduce blood glucose significantly compared with the diabetic untreated group. Hypercellularity and density of B cells increased in pancreatic tissue, islets size and percent of B cells increased significantly in Propolis treated group which may signify regeneration of islets or B cells in Propolis treated rats. In the current study, we have demonstrated that, both structural and functional improvements of pancreas. Further researches are highly needed to clarify the specific molecular and cellular targets of various constituents of Propolis.

scholarly journals Moderation of mitochondrial respiration mitigates metabolic syndrome of aging

2020 ◽  
Vol 117 (18) ◽  
pp. 9840-9850 ◽  
Author(s):  
Mojdeh Tavallaie ◽  
Ramouna Voshtani ◽  
Xinxian Deng ◽  
Yixue Qiao ◽  
Faqin Jiang ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Mitochondrial Respiration ◽  
Mitochondrial Dynamics ◽  
Atp Synthesis ◽  
Control Group ◽  
Standard Diet ◽  
Ros Production ◽  
Metabolic Complications ◽  
Age Related ◽  
Mitochondrial Functions

Deregulation of mitochondrial dynamics leads to the accumulation of oxidative stress and unhealthy mitochondria; consequently, this accumulation contributes to premature aging and alterations in mitochondria linked to metabolic complications. We postulate that restrained mitochondrial ATP synthesis might alleviate age-associated disorders and extend healthspan in mammals. Herein, we prepared a previously discovered mitochondrial complex IV moderate inhibitor in drinking water and orally administered to standard-diet-fed, wild-type C57BL/6J mice every day for up to 16 mo. No manifestation of any apparent toxicity or deleterious effect on studied mouse models was observed. The impacts of an added inhibitor on a variety of mitochondrial functions were analyzed, such as respiratory activity, mitochondrial bioenergetics, and biogenesis, and a few age-associated comorbidities, including reactive oxygen species (ROS) production, glucose abnormalities, and obesity in mice. It was found that mitochondrial quality, dynamics, and oxidative metabolism were greatly improved, resulting in lean mice with a specific reduction in visceral fat plus superb energy and glucose homeostasis during their aging period compared to the control group. These results strongly suggest that a mild interference in ATP synthesis through moderation of mitochondrial activity could effectively up-regulate mitogenesis, reduce ROS production, and preserve mitochondrial integrity, thereby impeding the onset of metabolic syndrome. We conclude that this inhibitory intervention in mitochondrial respiration rectified the age-related physiological breakdown in mice by protecting mitochondrial function and markedly mitigated certain undesired primary outcomes of metabolic syndrome, such as obesity and type 2 diabetes. This intervention warrants further research on the treatment of metabolic syndrome of aging in humans.

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