Autoantibodies against oxidized low-density lipoprotein (ox-LDL) and LDL oxidation status

2004 ◽  
Vol 42 (2) ◽  
Author(s):  
Patrizia Brizzi ◽  
Giancarlo Tonolo ◽  
Graziano Bertrand ◽  
Francesca Carusillo ◽  
Cristiana Severino ◽  
...  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Inverse Correlation ◽  
Thalassemia Major ◽  
Ldl Oxidation ◽  
Control Group ◽  
Low Density ◽  
Oxidation Degree ◽  
Atorvastatin Treatment ◽  
Type 2 Diabetic Mellitus

AbstractOxidized low-density lipoproteins (ox-LDLs) and their autoantibodies (OLAB) are involved in the development of atherosclerosis in animal models, but their role in humans is still not clear. For this reason we studied 54 patients with β-thalassemia major (TM), as a model of chronically low circulating LDLs with a high level of oxidation; 44 patients with primary hypercholesterolemia, as model of chronically high circulating LDLs; 24 type 2 diabetic mellitus patients (T2DM) before and after 3 months of atorvastatin treatment (20 mg/day), as a model of acute changes in circulating LDLs; and 41 normolipidemic subjects as a control group. ox-LDLs were measured by the determination of baseline diene concentration in the plasma LDL lipidic fraction after 12 hours fasting and were expressed as the amount of conjugated dienes/liter (BDC/l) or BDC/LDL-cholesterol (LDL-C), which indicate respectively LDL oxidation degree and status. OLABwere determined using an enzyme immunoassay and related to LDL oxidation degree (BDC/l). In TM, BDC/l was lower, while BDC/LDL-C was significantly higher, compared to both hypercholesterolemia and normolipidemic subjects. Patients with hypercholesterolemia had higher BDC/l, but lower BDC/LDL-C and OLAB/BDC-l, than normolipidemic subjects. In T2DM patients at diet, BDC/LDL-C and OLAB/BDC-l were lower than in normolipidemic subjects. After 3 months of atorvastatin treatment, BDC/LDL-C and OLAB/BDC-l ratios increased. When all patients were evaluated together, a significant inverse correlation was evident between OLABand either LDL or BDC/l. Our findings suggest that a relationship between OLABtiter and oxidation indices (BDC/l and BDC/LDL-C) does exist and we may speculate that an increase in OLAB/BDC-l ratio might be protective against the risk of atherosclerosis.

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.

Drug related metabolites and genetic polymorphisms predict low low-density lipoprotein cholesterol response to atorvastatin treatment in patients with coronary heart disease

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J Munkhaugen ◽  
E Sverre ◽  
O Kristiansen ◽  
M.W Fagerland ◽  
K Peersen ◽  
...  
Keyword(s):  
Coronary Heart Disease ◽  
Genetic Polymorphisms ◽  
Individual Variation ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Statin Treatment ◽  
Funding Source ◽  
Low Density ◽  
Low Density Lipoprotein Cholesterol ◽  
Atorvastatin Treatment

Abstract Background There is considerable individual variation in the low-density lipoprotein cholesterol (LDL-C) reduction at all classes and doses of statins. Knowledge of the determinants of individual variation LDL-C response upon statin treatment may pave the way for personalized and optimized statin treatment. Purpose We aimed to determine clinical and drug related predictors of variability of LDL-C response to atorvastatin 40 mg in patients with coronary heart disease. Methods This is an explorative study among 70 patients enrolled in the MUscle Side-Effects of atorvastatin in coronary patients (MUSE) randomized double blinded cross-over trial. Absolute and relative changes in LDL-C after 7 weeks treatment with atorvastatin 40 mg/day and 7 weeks treatment with placebo, were calculated for each patient. Linear regression analyses were applied to investigate the association between clinical (10 variables) and drug related (atorvastatin and/or metabolites, 18 variables) predictors and changes in LDL-C. Results Adherence to allocated treatment was high as confirmed by atorvastatin levels in blood and a mean proportion of days covered of 99% (range 91–100%). Mean reduction in LDL-C on atorvastatin treatment (LDL-C atorvastatin – LDL-C placebo) was 2.1 (SD 0.7, range 0.3 to 3.4) mmol/L. Mean percentage reduction in LDL-C was 51.1 (SD 11.2, range 29 to 60)%, and 37 patients (52.9%) had <50% LDL-C reduction. Genetic polymorphisms in SLCO1B1 or CYP3A (B 0.06, 95% CI 0.01 to 0.12, p=0.026), increasing number of coronary events (B 0.06, 95% CI 0.002 to 0.10, p=0.005), increasing trough concentration of 4-OH atorvastatin lactone (B 0.05, 95% CI 0.01 to 0.08, p=0.005) and increasing trough concentration of 4-OH atorvastatin acid (B 0.05, 95% CI 0.01 to 0.08, p=0.006) were the significant determinants of lower relative change (%) in LDL-C, in adjusted analyses. Age, gender, somatic comorbidity, cardiovascular risk factors, statin dependent muscle side-effects and other clinical and drug related determinants were not associated with changes in LDL-C. Conclusions There is considerable inter-individual variation in the LDL-C response upon treatment with atorvastatin despite confirmed high statin adherence. This is the first study reporting that genetic polymorphisms involved in the metabolism of statins and atorvastatin metabolites predict lower LDL-C response. Funding Acknowledgement Type of funding source: Public Institution(s). Main funding source(s): National Association of Health, Grant/Award

scholarly journals Effect of Whole Quail (Coturnix japonica) Egg Consumption on some Reproductive Parameters and Lipid Profile of Male Albino Rat (Rattus norvegicus)

2017 ◽  
Vol 9 (3) ◽  
pp. 315-320 ◽  
Author(s):  
Chidozie N. OKOYE ◽  
Samuel O. EKERE ◽  
Onyinyechukwu A. AGINA ◽  
Ikechukwu J. UDEANI ◽  
Chukwunonso K. EZEASOR
Keyword(s):  
Lipid Profile ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Control Group ◽  
Low Density ◽  
Epididymal Sperm ◽  
Treatment Groups ◽  
Egg Consumption ◽  
Group A ◽  
The Mean

The present study evaluated the effect of whole egg consumption on the liver, testes, cauda epididymal sperm reserve and lipid profile of male rats. These evaluations were carried out on adult twenty (20) male albino rats, which were randomly selected into four groups of 5 rats each, designated groups A, B, C and D. Group A was the control group and received only equivalent volume of distilled water, while groups B, C and D received 0.25mg/kg, 0.5mg/kg; and 1.0mg/kg body weight of the quail egg respectively. Standard procedures were carried out in the tissue processing, cauda epididymal sperm reserve and in lipid profile determinations. On days 35 and 49, the mean serum total cholesterol value of group D was significantly lower than that of the control group. On day 35, the mean serum low density lipoprotein and high density lipoprotein (LDL and HDL cholesterol) values of all the treatment groups were significantly lower and higher than that of the control group, respectively. However, on days 49 and 63, the mean serum very low density lipoprotein (VLDL cholesterol) and triglyceride values of all the treatment groups were significantly higher than that of the control group. A significant increase in cadual epididymal sperm count (CESR) was recorded on day 63 at the mid and high doses. No obvious pathological lesions were observed in the histomorphology of the testes and liver when compared to the control. Therefore, whole quail egg consumption caused an increase in serum triglyceride and very low density lipoprotein concentration, and also improved fertility. In other words, prolonged consumption of quail egg should be done with caution as it may predispose one to cardiovascular disease.

scholarly journals Study the Effects of Methotrexate with and without Vitamin A on Some Biochemical and Histological Parameters in Male Rabbits

2017 ◽  
Vol 11 (1) ◽  
pp. 45-53
Author(s):  
Makarim Q. Al-Lami ◽  
Asmaa I. Sail ◽  
Salah M. Al-Chalabi ◽  
Ferial A. Al-Mahdawi
Keyword(s):  
Vitamin A ◽  
Histological Examination ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Treated Group ◽  
Control Group ◽  
Low Density ◽  
Typical Structure ◽  
Histological Changes ◽  
Sinusoidal Dilatation

The present study aims to evaluate the effects of methotrexate (MTX) with and without vitamin A (Vit. A) on some biochemical parameters and histological structure in male rabbits liver. Twenty male rabbits weighing 1250-1480 gm were divided into four equal number groups. The first group was given 2 ml distilled water as control group. The second group was given MTX (20 mg/kg), the third group was given Vit. A (5000 IU), while the fourth group was given MTX (20 mg/kg) +Vit. A (5000 IU) in alternative days. Following four weeks of treatment, lipid profile total cholesterol (TC), triglycerides (TG), high-density lipoprotein (HDL), [low-density lipoprotein (LDL) and very low-density lipoprotein (VLDL)]; in addition to thyroid hormones triiodothyronine (T3) and thyroxin (T4)] and liver enzymes [glutamic pyruvic transaminase (GPT) and glutamic oxaloacetic transaminase (GOT)] were determined in the serum. Also, the histological examination of liver of all the experimental groups were carried out. The results were revealed that the treatment with MTX caused a significant P≤0.05 increases in TC, HDL, LDL, T4, and GPT when compared with the control group. The treatment with Vit. A did not cause any significant P≥0.05 differences in all the studied parameters. The MTX+Vit. A treated group showed a significant P≤0.05 increases only in GPT compared with the control group; while a significant P≤0.05 decreases was found in TC, HDL, T3, T4, and GOT when compared with the MTX treated group. The histological examination of the liver sections showed that MTX administration caused major histological changes in comparison with the control such as inflammatory cell infiltrations, vascular congestion, sinusoidal dilatation and granular degeneration of hepatocytes. Treatment with Vit. A showed a typical structure in liver tissue. While in MTX+Vit. A group, the histological changes were less severe than those in the MTX treated group; these changes were granular degeneration of hepatocytes and sinusoidal dilatation at low levels. The overall results of this study confirmed that administration of Vit. A decreased the side effects of MTX; this protective effect of Vit. A may have clinical applications in chemotherapy.

scholarly journals Effect of Some Strains of Lactic Acid Bacteria and Their Mixture on the Level of Fats and Cholesterol in Albino Rats (Rattus norvegicus) Male with Hypothyroidism Induced Using Carbimazole

2021 ◽  
Vol 34 (1) ◽  
pp. 139-146
Author(s):  
Elham K. Nasser ◽  
Kithar R. Majeed ◽  
Hayder I. Ali
Keyword(s):  
High Density Lipoprotein ◽  
Low Density Lipoprotein ◽  
Control Sample ◽  
Density Lipoprotein ◽  
High Density ◽  
Control Group ◽  
Albino Rats ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
Fortified Milk

Fortified milk containing Lactobacillus plantarum, L. casei, and L. acidophilus isolates and their mixture were used in dosing the male albino rats at an age of 9-12 weeks at an average of 23 g with induced hypothyroidism at a concentration of 0.6 g.kg-1 of carbimazole. Total cholesterol, triglycerides, high-density lipoprotein (HDL), low-density lipoprotein (LDL), and very-low-density lipoprotein (VLDL) were estimated. The results showed a significant increase in the level of triglycerides (TG), cholesterol and triglycerides. Low-density lipoprotein (LDL) and very-low-density lipoprotein (VLDL), with a significant decrease in the level of high-density lipoprotein (HDL) in infected male mice, compared to the control sample, and upon dosing with liquid milk fortified, it returned to its normal level without significant differences from the control group.

scholarly journals Evaluation of Lipid Lowering Effect of Milk Thistle (Silybum Marianum) in Comparison with Rosuvastatin in Rats by Using Ace-alera® Analyzer

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Lipid Lowering ◽  
Control Group ◽  
Milk Thistle ◽  
High Dose ◽  
Hypolipidemic Effect ◽  
Low Density ◽  
Therapeutic Protocols

Dyslipidemia is a metabolic disorder that is characterized with an elevation in the cholesterol serum levels that can be treated with various hypolipidemic drugs like rosuvastatin. The present study was undertaken to determine and evaluate the hypolipidemic effect of milk thistle seeds extract in comparison with rosuvastatin and the combination of both for the treatment of dyslipidemia in rats. Also its effect on blood glucose levels on experimentally induced dyslipidemic rats. In vivo studies were conducted on wister albino laboratory rats, in which 49 rats were induced to be dyslipidemic by a daily intragastric administration of cholesterol (2 g/kg). The induction of dyslipidemia was evaluated by comparing these rats with a negative control group that was composed of 10 healthy rats. Then, after one month dyslipidemia was induced in 49 rats that were divided into 6 groups, as the following; positive control group (n=9) received cholesterol (2 g/kg) for another one month, and the other five groups each of 8 rats continued to receive cholesterol (2 g/kg) for one month along with therapy as; rosuvastatin low dose (RL) group received 10 mg/kg, rosuvastatin high dose (RH) group received 20 mg/kg, milk thistle (MT) group received 7.15 mg/kg, (RL+MT) group received a combination of 10 mg/kg of rosuvastatin and 7.15 mg/kg of milk thistle, and (RH+MT) group received a combination of 20 mg/kg of rosuvastatin and 7.15 mg/kg of milk thistle. The statistical results of biochemical analysis showed that all the studied therapeutic protocols whether given alone; RL, RH, and MT or in a combination; RL+MT and RH+MT led to a significant (p≤0.05) hypolipidemic effect that reduced the total cholesterol (TC), triglyceride (TG), low density lipoprotein (LDL) and very low density lipoprotein (VLDL) and increased the high density lipoprotein (HDL) cholesterol levels. In conclusion, all therapeutic protocols were effective in treating dyslipidemia, as they all reduced the TC, TG, LDL, and VLDL, and increased the HDL cholesterol significantly (p≤0.05). Furthermore, we found that milk thistle can be used in the management of dyslipidemia, as it has a hypolipidemic effect. Also, the addition of milk thistle to rosuvastatin therapy reduced the risk of developing diabetes mellitus (DM), as it has a glucose modulating activity either when it was given alone or in combination with rosuvastatin. Moreover, the combination of milk thistle and rosuvastatin was of a great benefit, as it gave an intensive goal of therapy than each one alone in altering all lipid profile parameters.

scholarly journals Effects of Ethanolic Extract of Metracaria chamomela on Some Physiological Parameters in Male Rabbits

2015 ◽  
Vol 39 (2) ◽  
pp. 26-31
Author(s):  
Alia Hussein Ali
Keyword(s):  
Blood Cell ◽  
Cell Count ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Ethanolic Extract ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Low Density ◽  
Low Density Lipoprotein Cholesterol ◽  
Blood Cell Count

     The aim of this study is to explain the effect of Ethanolic extract 70% of Metracaria chamomella on some physiological parameters in male rabbits. Twelve adult male rabbits were used in this study and were divided equally into two groups: First group was control (C) and received normal saline for four weeks, the second group (Treated group) was intubated orally with ethanolic extract of Metracaria chamomella in a dose 70 mg/kg B.W. for four weeks. Blood samples were collected by heart puncture from each animal at the end of experiment. Blood sample was divided into a part for hematological study and a part for biochemical analysis. The value of serum urea, and creatinine were reduced in animals that received Metracaria chamomella extract at dose of 70 mg/ kg B.W. as compared with the control group. Significant decrease in serum activity of aspartate aminotransferase alanine aminotransferase and alkaline phosphatase activity was observed in Metracaria treated animal as compared with the control group. This study explained that there was significant increase in serum total protein, serum albumin and serum globulin in treated animals as compared with the control group. The value of total cholesterol, serum triacylglycerol, serum low density lipoprotein cholesterol and very low density lipoprotein cholesterol concentration were reduced significantly in animal received Metracaria chamomella extract while the high density lipoprotein cholesterol was elevated significantly as compared with control group. While the effect of Metracaria chamomella extract on blood picture showed no changes in red blood cell count, hemoglobin concentration and hematocrit value but showed significant decrease in platelet count, and significant   increase in white blood cell count as compared with control group. Over all this study explained that Metracaria chamomella extract had Reno protective and hypolipidimic effect in male rabbit.  

Hypocholesterolaemic and antioxidant efficiency of chickpea (Cicer arietinum) protein hydrolysates depend on its degree of hydrolysis in cholesterol-fed rat

2017 ◽  
Vol 47 (2) ◽  
pp. 254-269 ◽  
Author(s):  
Sanaa Yahia ◽  
Souhila Benomar ◽  
Faiza Dehiba ◽  
Amine Allaoui ◽  
Natalia Guillen ◽  
...  
Keyword(s):  
Cicer Arietinum ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Protein Hydrolysates ◽  
Control Group ◽  
Degree Of Hydrolysis ◽  
Low Density ◽  
Acyltransferase Activity ◽  
Antioxidant Efficiency ◽  
Content Type

Purpose The purpose of this study was to determine the effects of chickpea (Cicer arietinum) protein hydrolysates prepared at two degrees of hydrolysis (DH) on lipoprotein profile and on oxidant status in cholesterol-fed rats. Design/methodology/approach Eighteen male Wistar rats (220 ± 10 g) were divided into three groups and fed for 30 days a diet containing 20 per cent casein supplemented with 1 per cent cholesterol and 0.5 per cent cholic acid. During the experimentation, the first and the second groups received daily by gavage 250 mg of chickpea protein hydrolysates/rat at DH = 8 per cent (CPH8) and DH = 17 per cent (CPH17), respectively. The third group, named control group (CG), received water under the same conditions. Findings Serum total cholesterol concentrations were reduced in CPH8 (p < 0.0073) and CPH17 (p < 0.0004) groups versus CG. This reduction corresponded to a lower very-low-density lipoprotein (VLDL)-cholesterol (p < 0,0019). CPH17 reduced low-density lipoprotein- and high-density lipoprotein (HDL)-cholesterol (p < 0.0001) but increased apolipoprotein A4 (p < 0.002) concentrations and lecithin-cholesterol acyltransferase activity (p < 0.0001). APOA1 remained unchanged in the treated groups. Liver total and esterified cholesterol contents were twofold lower in both treated groups versus CG. CPH8 increased triacylglycerols and phospholipids (p < 0.0001) contents, while CPH17 decreased those of unesterified cholesterol (p < 0.0016). Compared with CG, CPH8 and CPH17 reduced serum (p < 0.0001) and lipoprotein hydroperoxides by stimulating paraoxonase activity (p < 0.0001). However, only CPH17 treatment reduced serum, VLDL- and HDL-malondialdehyde contents and improved glutathione peroxidase activity (p < 0.061). Originality/value Thus, chickpea protein hydrolysates and especially hydrolysed at DH = 17 per cent may have a great potential for use as a nutraceutical to reduce hypercholesterolaemia and, by consequence, oxidative stress. Therefore, the degree of enzymatic hydrolysis has a significant influence on the production of potent bioactive peptides.

Sign in / Sign up

Export Citation Format

Share Document