scholarly journals STUDY OF THE EFFECT OF CHITOSAN EXTRACTED FROM THE MUSHROOM ON THE EXPERIMENTALLY INDUCED HYPERLIPIDEMIA IN MALE RABBITS

2021 ◽  
Vol 13 (2) ◽  
pp. 79-88
Author(s):  
إبراهيم خلف حميد الدليمي ◽  
◽  
أسماء هاشم شاكر ◽  
فهد خلف ياسين ◽  
◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Research Study ◽  
Low Density Lipoproteins ◽  
High Density Lipoproteins ◽  
Control Group ◽  
Low Density ◽  
Very Low Density Lipoproteins ◽  
Glucose Levels ◽  
Significant Difference ◽  
Therapeutic Evaluation

The present study aimed to identify the therapeutic evaluation of chitosan extracted from the fungus cushroom and pure chitosan on glucose and lipid profile in the blood of 35 male rabbits with hyperlipidemia induced experimentally by cholesterol. The tests included estimation of glucose levels, total cholesterol, triglycerides, high-density lipoproteins, low-density lipoproteins, and very low-density lipoproteins. hyperlipidemia was induced in the male rabbits used in the study which was administered orally with cholesterol 150mg/kg body weight for a week. rabbits were divided into seven groups: control, cholesterol, pure chitosan, mushroom chitosan, cholesterol and pure chitosan, cholesterol and mushroom chitosan and cholesterol and simvastatin. The results of the study showed, the hyperlipidemia induced experimentally resulted a significant increase (P<0.05) in TC, TG, LDL, and VLDL, while no significant difference in HDL compared with control group, on the otherwise the glucose level significantly increase than control. Also, groups of animals treatment with pure chitosan and mushroom chitosan showed a significant decrease (P<0.05) in glucose, TC, TG, LDL, and VLDL, and no significant difference in HDL compared with control group. While, the groups showed treatment with cholesterol and pure chitosan, cholesterol and mushroom chitosan, cholesterol and simvastatin a significant decrease (P<0.05) in glucose, TC, TG, LDL, and VLDL, and a significant increase (P<0.05) in HDL compared with the cholesterol group. The research study revealed that chitosan extracted from mushroom can control the levels of fat concentrations and their complications, in addition to its important role in biochemical variables, and treatment of most disease cases, especially cardiovascular disease.

The therapeutic effect of some drugs and vegetable juices on the lipid profiles in male rabbits induced atherosclerosis.

2019 ◽  
Vol 9 (o3) ◽  
Author(s):  
Sawsan Taha Ahmed al-Haddad ◽  
Zaid Mohammed Mubarak Almahdawi ◽  
Munife S. Ahmed Al-janabi
Keyword(s):  
Green Tea ◽  
Density Lipoprotein ◽  
Lemon Juice ◽  
Low Density Lipoproteins ◽  
High Density ◽  
High Density Lipoproteins ◽  
Control Group ◽  
Low Density ◽  
Very Low Density Lipoproteins ◽  
Group 5

This study was designed to test the therapeutic efficacy of some hypotensive drugs and vegetable drinks on some biochemical indicators in male rabbits, where atherosclerosis was developed using 1% cholesterol with food. This study was conducted in June until the end of July 2017 in the Pharmacology Department/ General Company for Pharmaceutical Industry in Samarra. In the study, 50 local rabbits were randomly distributed by 10 groups each containing 5 animals. The first group considered as the control group. The second group is the control group treated with 1% cholesterol with the food, the third group treated with cholesterol (1% and captopril 0.71 mg), group 4 (cholesterol 1% with atenolol 0.71 mg / kg), group 5 (cholesterol 1%, amlodipine 0.07 mg / kg) , group 6 treated with cholesterol 1% and aldomet (0.57 mg / kg), group 7 (cholesterol 1% and furosemide at 3.5 mg / kg), group 8 (cholesterol 1% with garlic syrup 2 ml), group 9 treatment cholesterol 1% and lemon juice), and group 10 Treatment with (1% cholesterol and green tea syrup 2 ml). The results of the study showed a significant increase (P≤0.01)) at the level of each of cholesterol triple and triglycerides, proteins and low density lipoproteins, very low density lipoproteins, also led to obtain a significant decrease in the level of high-density lipoproteins (HDL) in the treatment group with cholesterol 1% compared to control group. At the time of the treatment of anti- pressure drugs: Captopril, Atenolol, Amlodipine ,Aldomet, and Furosmide , there were no significant differences in the cholesterol level of all pharmacological groups. Moral differences were not found in LDL-C and there was a significant decrease (P≤0.01) of the level of triglycerides, proteins and very low density lipoproteins, and there was a significant increase in the level of high-density lipoproteins HDL-C, while treatment with plant juices, there was a significant decrease (P≤0.01) in the level of total cholesterol and triglycerides and LDL, and VLDL, high-density lipoprotein (HDL-C) increased when treated with garlic, lemon and green tea. We conclude pressure drugs of any kind can cure atherosclerosis or prevent high fat, unlike its counterparts OF plants, which have shown a significant effect on controlling lipid profile and reducing their effects and future risks on the heart.

scholarly journals Study of the correlations between serum iron and Hepcidin with some biochemical variables in hyperlipidemia of elderly males and females in Salah Al Deen Province

2020 ◽  
Vol 25 (2) ◽  
pp. 9
Author(s):  
Khalida Khalil Abdullah1 ◽  
Saleh Mohammed Rahim2
Keyword(s):  
Low Density Lipoproteins ◽  
High Density ◽  
High Density Lipoproteins ◽  
Control Group ◽  
Low Density ◽  
Very Low Density Lipoproteins ◽  
Correlation Relationship ◽  
Biochemical Variables ◽  
Elderly Males ◽  
Males And Females

The present research was designed to investigate the role of the relationship between Iron and hepcidin hormon with some biochemical variables in patients with hyperlipidemia in both males and females elderly in Salah al-Din governorate. The study included 40 individuals distributed into two groups. The first group was the control group, which included 20 human males and females and the second group included 20 patients (10 males and 10 females) whose ages ranged between (60-79) years. Blood was collected to estimate the hepcidine hormone, iron, cholesterol, triglycerides, high-density lipoproteins, low-density lipoproteins, and very low-density lipoproteins. The results showed a significant increase in (P≥ 0.05) in the concentration of iron and hepcidin hormone, cholesterol, triglycerides, low-density lipoproteins and very low-density lipoproteins while showed a significant decrease in (P≥ 0.05) in the concentration high-density lipoproteins in patients Males and females hyperlipidemia compared to the control group. The results also indicated a direct correlation relationship between iron and hepcidine hormone and studied variables cholesterol, triglycerides, low-density lipoproteins and very low-density lipoproteins in patients compared to the control group. It is concluded through the results that iron and the hepcidin hormon may have an important role in the development of cardiovascular diseases in hypertensive patients in elderly both males and females.            http://dx.doi.org/10.25130/tjps.25.2020.023

Selective uptake of cholesteryl esters from various classes of lipoproteins by HepG2 cells

1999 ◽  
Vol 77 (2) ◽  
pp. 157-163 ◽  
Author(s):  
Louise Brissette ◽  
Marie-Claude Charest ◽  
Louise Falstrault ◽  
Julie Lafond ◽  
David Rhainds ◽  
...  
Keyword(s):  
Total Lipid ◽  
Hepg2 Cells ◽  
Ldl Receptor ◽  
Inverse Correlation ◽  
Low Density Lipoproteins ◽  
High Density Lipoproteins ◽  
Low Density ◽  
Cholesteryl Esters ◽  
Very Low Density Lipoproteins ◽  
Selective Uptake

Selective uptake of cholesteryl esters (CE) from lipoproteins by cells has been extensively studied with high density lipoproteins (HDL). It is only recently that such a mechanism has been attributed to intermediate and low density lipoproteins (IDL and LDL). Here, we compare the association of proteins and CE from very low density lipoproteins (VLDL), IDL, LDL and HDL3 to HepG2 cells. These lipoproteins were either labelled in proteins with 125I or in CE with 3H-cholesteryl oleate. We show that, at any lipoprotein concentration, protein association to the cells is significantly smaller for IDL, LDL, and HDL3 than CE association, but not for VLDL. At a concentration of 20 µg lipoprotein/mL, these associations reveal CE-selective uptake in the order of 2-, 4-, and 11-fold for IDL, LDL, and HDL3, respectively. These studies reveal that LDL and HDL3 are good selective donors of CE to HepG2 cells, while IDL is a poor donor and VLDL is not a donor. A significant inverse correlation (r2 = 0.973) was found between the total lipid/protein ratios of the four classes of lipoproteins and the extent of CE-selective uptake by HepG2 cells. The fate of 3H-CE of the two best CE donors (LDL and HDL3) was followed in HepG2 cells after 3 h of incubation. Cells were shown to hydrolyze approximately 25% of the 3H-CE of both lipoproteins. However, when the cells were treated with 100 µM of chloroquine, a lysosomotropic agent, 85 and 40% of 3H-CE hydrolysis was lost for LDL and HDL3, respectively. The fate of LDL and HDL3-CE in HepG2 cells deficient in LDL-receptor was found to be the same, indicating that the portion of CE hydrolysis sensitive to chloroquine is not significantly linked to LDL-receptor activity. Thus, in HepG2 cells, the magnitude of CE-selective uptake is inversely correlated with the total lipid/protein ratios of the lipoproteins and CE-selective uptake from the two best CE donors (LDL and HDL3) appears to follow different pathways.Key words: lipoprotein, receptor, HepG2 cell, selective uptake, lipid, cholesterol, binding.

Comparison of the effects of escitalopram and atorvastatin on diet-induced atherosclerosis in rats

2014 ◽  
Vol 92 (3) ◽  
pp. 226-233 ◽  
Author(s):  
Amina Unis ◽  
Amany Abdelbary ◽  
Manal Hamza
Keyword(s):  
Histopathological Examination ◽  
Serum Levels ◽  
The Elderly ◽  
Low Density Lipoproteins ◽  
High Density Lipoproteins ◽  
Low Density ◽  
Model Group ◽  
Very Low Density Lipoproteins ◽  
Atorvastatin Group ◽  
Atherosclerotic Changes

Atherosclerosis is one of the most common disorders among the elderly. Depression may be associated with the development of atherosclerosis. Thus, the aim of this study is to evaluate and compare the effects of escitalopram (a selective serotonin reuptake inhibitor) with atorvastatin (a well known antihyperlipidemic drug) on high fat diet induced atherosclerosis in rats. The results of this study showed that the administration of either escitalopram or atorvastatin for 6 weeks was associated with a significant decrease in serum levels of total cholesterol, triglycerides, low density lipoproteins, very low density lipoproteins, and serum malondialdehyde, and a significant increase in high density lipoproteins when compared with the atherosclerosis model group. Histopathological examination of the aortas from the test rats revealed significant regression of atherosclerotic changes, together with a significant decrease in vascular cell adhesion molecule-1 (VCAM-1) expression in the media of both the escitalopram group and the atorvastatin group when compared with the atherosclerosis model group. This study has shown that escitalopram reduced atherosclerotic changes, thus its use as an antidepressant in elderly patients should be considered.

In chyloptysis, SP-A affects the clearance of serum lipoproteins entering the airways

1998 ◽  
Vol 274 (5) ◽  
pp. L737-L749 ◽  
Author(s):  
Antonella Alberti ◽  
Franco Ravenna ◽  
Daniela Quaglino ◽  
Maurizio Luisetti ◽  
Maurizio Muraca ◽  
...  
Keyword(s):  
Lavage Fluid ◽  
Surfactant Protein ◽  
Low Density Lipoproteins ◽  
High Density Lipoproteins ◽  
Low Density ◽  
Serum Lipoproteins ◽  
Very Low Density Lipoproteins ◽  
Lymphatic Circulation ◽  
Alveolar Surfactant ◽  
Exogenous Substances

Serum lipoproteins may enter the airways and appear in sputum (chyloptysis) when the lymphatic circulation is impaired by inflammation, neoplasia, or an abnormal proliferation of smooth muscle cells. While analyzing the bronchoalveolar lavage fluid of a patient with chyloptysis, we noticed that surfactant could not be separated from contaminating serum lipoproteins and speculated that lipoproteins might interact with surfactant components. To clarify this point we immobilized surfactant protein (SP) A on microtiter wells and incubated it with 125I-labeled very low density lipoproteins (VLDLs), low-density lipoproteins, and high-density lipoproteins. We found that SP-A binds lipoproteins. Studying in greater detail the interaction of SP-A with VLDLs, we found that the binding is time and concentration dependent; is inhibited by unlabeled lipoproteins, phospholipids, and antibodies to SP-A; is increased by Ca2+; and is unaffected by methyl α-d-mannopyranoside. Whole surfactant is a potent inhibitor of binding. Furthermore, we found that SP-A increases the degradation of VLDLs by alveolar macrophages and favors the association of VLDLs with alveolar surfactant. We conclude that SP-A influences the disposal of serum lipoproteins entering the airways and speculate that binding to alveolar surfactant might represent an important step in the interaction between exogenous substances and the lung.

scholarly journals Stimulation of triacylglycerol synthesis in rat adipocytes by plasma very-low-density lipoproteins

1978 ◽  
Vol 176 (1) ◽  
pp. 169-174 ◽  
Author(s):  
P Thomopoulos ◽  
M Berthelier ◽  
D Lagrange ◽  
M J Chapman ◽  
M H Laudat
Keyword(s):  
Fatty Acids ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Low Density Lipoproteins ◽  
High Density Lipoproteins ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
Very Low Density Lipoproteins ◽  
Rat Adipocytes ◽  
Triacylglycerol Synthesis

The effect of human plasma lipoproteins on lipogenesis from glucose has been studied in isolated rat adipocytes. The very-low-density lipoproteins increased lipogenesis specifically, whereas low-density lipoproteins and high-density lipoproteins were without effect. Such stimulation could be reproduced with partially delipidated very-low-density lipoproteins. Nod-esterified fatty acids and glycerol were also without effect. Pretreatment of the adipocytes with trypsin did not alter the effect of very-low-density lipoprotein. The presence of Ca2+ was required for the full activation of lipogenesis. The synthesis of acylglycerol fatty acids and of acylglycerol glycerol were equally increased. The effect of very-low-density lipoprotein was not additive to that of insulin. It is suggested that very-low-density lipoprotein may directly stimulate lipogenesis in fat-cells, particularly in states when the lipoproteins are present at high concentration in the circulation.

scholarly journals Role of vascular endothelial growth factor in the pathogenesis of hepatic steatosis and dyslipidemia

2020 ◽  
pp. 31-36
Author(s):  
И.Л. Гуляева ◽  
И.А. Булатова ◽  
Л.Д. Пестренин
Keyword(s):  
Metabolic Syndrome ◽  
Fatty Liver ◽  
Hepatic Steatosis ◽  
Low Density Lipoproteins ◽  
Control Group ◽  
Low Density ◽  
Very Low Density Lipoproteins ◽  
Fatty Liver Index ◽  
Nonalcoholic Hepatic Steatosis ◽  
Hepatic Steatosis Index

Цель исследования - изучение роли васкулоэндотелиального фактора роста в патогенезе неалкогольного стеатоза печени и дислипидемии при метаболическом синдроме. Методика. Обследовано 35 пациентов с неалкогольным стеатозом печени, в том числе 22 женщины и 13 мужчин. Группу контроля составили 12 сопоставимых по полу и возрасту лиц без патологии печени и признаков метаболического синдрома. Наличие жирового гепатоза подтверждали методом ультразвукового исследования. У пациентов с патологией печени рассчитывали индексы-предикторы стеатоза: Fatty Liver Index (FLI) и Hepatic Steatosis Index (HSI). У всех участников исследования определяли уровни провоспалительных цитокинов и васкулоэндотелиального фактора роста (ВЭФР), оценивали также липидный спектр крови и функциональные печеночные пробы. Результаты. У пациентов со стеатозом печени наблюдалось значимое увеличение уровней провоспалительных цитокинов, ВЭФР, общего холестерина и липопротеинов низкой и очень низкой плотности. Индекс атерогенности также был значимо выше, чем в контрольной группе. Концентрация ВЭФР положительно коррелировала с показателями окружности талии, тимоловой пробы, уровнями общего холестерина, липопротеинов низкой плотности и индексом атерогенности. Чувствительность FLI составила 91,4%, HSI - 97,1%. При этом, значения FLI и HSI значимо коррелировали с уровнем ВЭФР. Заключение. Полученные данные позволяют предположить, что ВЭФР, один из основных маркеров эндотелиальной дисфункции, может играть немаловажную роль в патогенезе неалкогольного стеатоза печени и дислипидемии у пациентов с метаболическомим синдромом The aim of the study was to assess the role of vascular endothelial growth factor (VEGF) in the pathogenesis of nonalcoholic hepatic steatosis and dyslipidemia in patients with signs of metabolic syndrome. Methods. 35 patients with nonalcoholic fatty liver disease, including 22 women and 13 men, were evaluated. The sex- and age-matched control group consisted of 12 people without liver pathology and metabolic syndrome criteria. Presence of hepatic steatosis was confirmed by an ultrasound examination. The Fatty Liver Index (FLI) and the Hepatic Steatosis Index (HSI) were calculated for patients with hepatic steatosis. Concentrations of proinflammatory cytokines and VEGF were measured for all participants. Also, blood biochemistry, including the lipid profile and liver function tests, was analyzed. Results. In patients with hepatic steatosis, levels of proinflammatory cytokines and VEGF were significantly increased. Also, concentrations of total cholesterol, low-density lipoproteins, and very low-density lipoproteins were higher in patients with the liver pathology than in the control group. Atherogenic coefficient was increased in hepatic steatosis. Significant correlations were observed between VEGF and waist circumference, thymol test, total cholesterol, low-density lipoproteins, very low-density lipoproteins, and atherogenic coefficient. Sensitivity of FLI and HIS was 91.4% and 97.1%, respectively. Also, FLI significantly correlated with HSI and VEGF level. Conclusion. The study suggested that VEGF, of the main markers of endothelial dysfunction, plays an important role in the pathogenesis of nonalcoholic hepatic steatosis and dyslipidemia in patients with signs of metabolic syndrome.

Insufficient accuracy and specificity of polyanion precipitation methods for quantifying low-density lipoproteins

1990 ◽  
Vol 36 (12) ◽  
pp. 2109-2113 ◽  
Author(s):  
R Siekmeier ◽  
W März ◽  
W Gross
Keyword(s):  
Fatty Acids ◽  
Dextran Sulfate ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Low Density Lipoproteins ◽  
High Density Lipoproteins ◽  
Low Density ◽  
Very Low Density Lipoproteins ◽  
Nonesterified Fatty Acids ◽  
High Concentrations

Abstract Recently, polyanion precipitation assays for low-density lipoprotein (LDL)-cholesterol have been found to underestimate their analyte in normolipidemic samples (Siekmeier et al., Clin Chim Acta 1988;177:221-30). Therefore, accuracy, specificity, and interference by nonesterified fatty acids have been studied for three precipitants (obtained by heparin, dextran sulfate, or polyvinyl sulfate precipitation). At normal concentrations of LDL, precipitation is incomplete, whereas it is nearly quantitative at high concentrations of LDL. The polyvinyl sulfate reagent markedly responds to variations in the amount of non-LDL protein present in the precipitation mixture. In the dextran sulfate and the polyvinyl sulfate method, but not in the heparin method, the percentages of LDL precipitated notably increase as the concentration of the polyanion compound is decreased. In either assay, very-low-density lipoproteins, but not high-density lipoproteins, are significantly coprecipitated (dextran sulfate 28%, polyvinyl sulfate and heparin 66%) in a concentration-independent fashion. Increased concentrations of nonesterified fatty acids markedly interfere with the dextran sulfate and polyvinyl sulfate assay, but do not much affect results with the heparin reagent.

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