Rat Low Density Lipoprotein Research Articles

Pengaruh Pemberian Fraksi n-Heksan Ekstrak Etanol Daun Kelor (Moringa oleifera L.) Terhadap Kadar Low-Density Lipoprotein (LDL) Tikus Jantan Galur Sprague dawley

Introduction: Moringa leaves are a plant that has many benefits. Moringa leaf ethanol extract contains several chemical compounds, such as alkaloids, flavonoids, phenolics, triterpenoids, and tannins. Flavonoids function to reduce total cholesterol and LDL cholesterol. Objectives: Study This aims to determine the effect of giving fraction-hexane ethanol extract of Moringa leaves (Moringa oleifera L.) against the rate of low-density lipoprotein (LDL) on male rat strain Sprague Dawley given high-fat feed. Methods: This research uses a pre-test and post-test control group design. Thirty-six male white mice Sprague Dawley were given high-fat meals and then divided into six groups: group I was the standard group; Group II, the negative control, was assigned CMC Na 1%. Group III, the positive control, was given 10 mg of simvastatin. Groups IV, V, and VI were given the n-hexane fraction of the ethanol extract of the leaves Moringa (FHDK) with successive doses of 3.722 mg/kg BW; 7.444 mg/kg BW, and 14,888 mg/kg BW, which had previously been screened for phytochemicals. Results: The results of the phytochemical screening of the n-hexane fraction showed it was positive for containing alkaloids, flavonoids, tannins, and beta-sitosterol. Based on level measurements of low-density lipoprotein (LDL) in test animals measured before (pre-test) and after 14 days of intervention (post-test). The results showed that the n-hexane fraction of Moringa leaf ethanol extract was able to reduce LDL levels in groups IV, V, and VI respectively by as much as29,95 % ± 5,13; 75,61 % ± 8,63 and88,22 % ± 5.75. Simvastatin (group 3) amounted to 89,13 % ± 5.88. Based on statistical analysis after this LSD test showed that group VI could reduce LDL levels comparable to group III (Sig.0.792 > 0.05) Conclusion: This research concludes that the n-hexane fraction of the ethanol extract of Moringa leaves can reduce LDL levels with an optimal dose of 14.888 mg/kgBB in mice, which is comparable to 10 mg simvastatin.

The therapeutic effect of alcoholic extract of Fumaria parviflora on high-fat diet-induced nonalcoholic fatty liver in rats: an animal experiment.

Nonalcoholic fatty liver disease (NAFLD) is a growing problem with a significant burden. Lifestyle modification is the recommended treatment, but researchers are exploring other options. This study focused on the effects of Fumaria parviflora (FP) extracts on NAFLD induced by a high-fat diet in rats. Thirty-five 10-week-old male Wister-Albino rats were divided into seven groups: normal diet control, high fat diet control, high fat diet with oral normal saline gavage, high fat diet with oral Atorvastatin gavage, and three groups receiving high fat diet with FP extract in 200mg/kg, 400mg/kg, and 700mg/kg.Blood samples of rats were used for the measurement of total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglyceride (TG), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP).1×1cm Liver biopsies were taken, stained with Trichrome Stain (Masson) and Hematoxylin and eosin (H&E) stain for evaluation by a pathologist. Lab results showed that FP extract inhibits weight gain, has positive effects on triglyceride and alkaline phosphatase levels, and reduces hepatocyte ballooning and inflammation in rats. FP extract may lower liver enzymes and have a positive impact on triglyceride, LDL, and HDL levels in rats with NAFLD.

Effect of <em>arum manis</em> mango peel extract on cholesterol and triglyceride levels in dyslipidemic Sprague-Dawley rats

BACKGROUND Dyslipidemia is characterized by an increase in low-density lipoprotein (LDL) and triglyceride (TG) levels and a decrease in high-density lipoprotein (HDL). Cholestyramine as an antidyslipidemia has several side effects, so an alternative is needed. Pectin is a natural substance with a mechanism of action similar to that of cholestyramine. Mango peel is one of the sources of pectin, containing 10–15% of this substance. This study aimed to prove the effect of arum manis mango (Mangifera indica L.) peel extract on LDL, HDL, and TG levels in dyslipidemic Sprague-Dawley rats.
 METHODS 25 Sprague-Dawley rats were divided into 5 groups. All groups were given high-fat diet for the first 18 days, followed by standard feed (negative control group), cholestyramine (Sequest®) 80 mg/200 g body weight (standard treatment group), and mango peel extract (M-90 [90 mg/day], M-180 [180 mg/day], and M-360 [360 mg/day] groups) for the next 15 days. LDL and HDL levels were analyzed using the cholesterol oxidase-phenyl aminopyrazolone method and TG level using the glycerol-3-phosphate-oxidase-phenol-aminophenazone method.
 RESULTS The M-360 group reduced the LDL level (p = 0.015), while the standard treatment group increased the HDL level (p = 0.042). Although significant TG level changes were found in the negative control, standard treatment, and M-360 groups (p = 0.042), the mean differences of LDL, HDL, and TG levels between groups were not significantly different (p = 0.245, 0.328, and 0.454, respectively).
 CONCLUSIONS M. indica peel extract reduced LDL and TG levels at 360 mg/day.

Nanocurcumin Improves Lipid Status, Oxidative Stress, and Function of the Liver in Aluminium Phosphide-Induced Toxicity: Cellular and Molecular Mechanisms

Background The present study aimed to evaluate the effect of nanocurcumin and curcumin on liver transaminases, lipid profile, oxidant and antioxidant system, and pathophysiological changes in aluminium phosphide (ALP) induced hepatoxicity. Material and Methods. In this experimental study, thirty-six male Wistar rats were randomly divided into six groups curcumin (Cur), nanocurcumin (Nanocur), ALP, ALP+Cur, and ALP+Nanocur. All treatments were performed by oral gavage for seven days. After treatment, animals were sacrificed, and liver and blood samples were taken. Serum levels of aspartate aminotransferase (AST), alanine transaminase (ALT), alkaline phosphatase (AP), total bilirubin, cholesterol, triglyceride, high-density lipoprotein (HDL), low-density lipoprotein (LDL), and very-low-density lipoprotein (VLDL) were measured by photometric methods. Total antioxidant capacity (TAC) and malondialdehyde (MDA) as parameters of oxidative stress and mRNA expression of the nonenzyme protein including Sirtuin 1 (STR1), Forkhead box protein O1 (FOXO1) and protein O3 (FOXO3), catalase (CAT), and glutathione peroxidase (GPX) as the enzyme protein in homogenized tissues have been investigated. A histologist analyzed liver tissue sections after staining with hematoxylin-eosin. Results In the aluminium phosphide group, there was a significant increase in MDA, ALT, AST, and AP and total bilirubin, cholesterol, triglyceride, LDL, and VLDL; AST, ALT, total bilirubin, LDL, VLDL, cholesterol, and MDA were significantly decreased; and HDL and TAC were significantly increased compared to ALP (P < 0.05). In the ALP+Nanocur group, ALT, AST, ALP, total bilirubin, cholesterol, LDL, VLDL, triglyceride, and MDA were significantly decreased and HDL and TAC were increased significantly (P < 0.05). The effect of nanocurcumin on controlling serum levels of LDL, VLDL, triglyceride, and MDA in ALP-poisoned rats was significantly more than curcumin (P < 0.05). The ALP group had significant changes in genes SIRT1, FOXO1a, FOXO3a, CAT, and GPX compared to healthy controls (P < 0.05). Nanocurcumin mice expressed more SIRT1, FOXO1a, CAT, and GPX genes than controls, and curcumin-treated mice expressed more SIRT1 and FOXO1a genes (P < 0.05). Histopathological findings also indicated a more significant protective effect of nanocurcumin relative to curcumin against ALP-induced hepatotoxicity. Conclusion Nanocurcumin significantly protects the liver against aluminum phosphide toxicity. It is suggested that nanocurcumin-based drugs be developed to reduce the toxic effects of ALP in poisoned patients.

The effect of Sorghum Tempeh (Sorghum bicolor L. Moench) on low-density lipoprotein (LDL) and malondialdehyde (MDA) levels in atherogenic diet-induced rats

An atherogenic diet induces oxidative stress leading to hypercholesterolemia. This condition causes atherosclerosis followed by increased LDL and MDA. Sorghum tempeh contains fiber and antioxidants that can protectively improve LDL and MDA levels. Therefore, this research aims to determine the effect of sorghum tempeh on LDL and MDA levels in atherogenic diet-induced rats compared to sorghum flour. It used a randomized pre-post test with a control group design. The test subjects were 30 male Sprague Dawley rats, consisting of 6 normal conditioned rats (C1), and 24 that were induced by an atherogenic diet (C2, T1, T2, T3) for 2 weeks. Sorghum flour was administered at a dose of 4.095 g (T1) and the sorghum tempeh at 3.041 g (T2) and 6.081 g (T3) for 4 weeks. Furthermore, C2 was constantly induced through an atherogenic diet. Total cholesterol and LDL levels were then analyzed using the CHOD-PAP method, and MDA levels, using the ELISA method. Meanwhile, statistical analysis for these variables was carried out using IBM SPSS Statistics 21 software. The results showed that the administration of sorghum flour and tempeh significantly reduced total cholesterol, LDL, MDA levels in each group (p = 0.001). Furthermore, it showed that there was a significantly strong correlation between LDL and MDA levels before and after treatment (r = 0.610, r = 0.805, and p = 0.001). The administration of sorghum tempeh at a dose of 6.081 g caused the greatest reduction (∆) in LDL levels at -44.19 ±2.58 mg.dL-1, although, it was not the same as normal control. Meanwhile, sorghum flour at a dose of 4.095 g was the most influential in reducing MDA levels to the same as normal control with delta (∆) at -7.67 ±0.37 ng.mL-1. In conclusion, sorghum tempeh and flour were the most effective at reducing LDL and MDA levels, respectively.

The Antioxidant Effect of Noni Fruits Extract on HDL and LDL Level of Wistar Rat Induced by High Fat Diet

Dyslipidemia is an important risk factor for myocardial infarction, cardiovascular diseases, and Nonalcoholic Fatty Liver (NAFLD) disorders. Inflammatory conditions, oxidative stress, and insulin resistance,as well as several risk factors for cardiovascular disease, are also risk factors for this disease. This study aimsto determine the effect of noni (Morinda citrifolia) extract on the improvement of dyslipidemia condition,based on the Low Density Lipoprotein (LDL) and High Density Lipoprotein (HDL) level. This research is alaboratory experimental study with a post-test only control group design. Male Wistar rat (Rattus norvegicus)were divided into four groups: negative control group with no induction and treatment (K-), positive controlgroup given high-fat diet induction for 14 days (K+), noni extract treatment group given a high-fat diet anda noni extract at a dose of 100 mg/kg BB per day for 7 days (P1), and noni extract at a dose of 200 mg/kgBB per day for seven days (P2). Low Density Lipoprotein and High Density Lipoprotein serum levels weremeasured using the ELISA method. The results showed that there was a significant increase in LDL and adecrease in HDL in both treatment groups (P1 and P2) compared with K(+) group. Therefore, we concludethat noni extract (Morinda citrifolia) played a role as an antioxidant which can increase LDL and decreaseHDL serum levels in rats induced by a high fat diet.

Bisflavonoids fraction from Araucaria bidwilli Hook., reverses hyperlipidemia induced atherosclerosis in high-fat diet induced hyperlipidemia

BackgroundHyperlipidemia is a major cause for atherosclerosis which is a frontline cause for mortality in the world. Bisflavonoids are dimeric flavonoids abundant in few medicinal herbs with various pharmacological effects. However, in vivo anti-hyperlipidemic role of bisflavonoids (BFR) is limited. The present investigation is aimed to study BFR from the leaf extract of Araucaria bidwillii Hook. in rat model of hyperlipidemia.ResultsAdministration of HFD was significantly (p < 0.0001) shown to increase total cholesterol (TC), low-density lipoprotein (LDL), and triglycerides (TG) associated with decrease in HDL. BFR at two doses significantly decreased TC, LDL, and TG in HFD-fed rats. In addition, BFR significantly (p < 0.0001) decreased the MDA and significantly (p < 0.0001) increased the impaired anti-oxidant enzyme SOD and CAT in heart tissue induced by HFD. Further, 28 days administration of BFR significantly (p < 0.001) decreased HFD-induced aortic wall thickness.ConclusionIt can be concluded that bisflavonoids from A. bidwillii Hook. leaf extract administered to high fat-fed rats showed beneficial anti-hyperlipidemic effect by reducing lipid profiles and protecting the heart tissue from oxidative stress.

Evaluation of Sclerorhachis leptoclada hydroalcoholic extract on glucose and cholesterol levels, triglyceride, Serum HDL and LDL in male diabetic rats

Background and Aim: Diabetes is a metabolic disorder in the body. Sclerorhachis leptoclada belongs to the chicory family, is used to treat aids and cancer due to the antioxidant compounds in the root. Therefore, in this study, the effect of hydroalcoholic extract of Sclerorhachis leptoclada on glucose and cholesterol, triglyceride, high density lipoprotein (HDL) and low density lipoprotein (LDL) levels in diabetic rats was investigated. Materials and Methods: In this experimental study, 60 male Wistar rats were randomly divided into 10 groups of 6: Control group, treatment groups 1, 2, and 3 (healthy, treated with 150 mg/kg and 300 and 600 extracts), Diabetic control group, experimental groups 1, 2 and 3 (diabetic, treated with doses of 150 mg/kg and 300 and 600 extracts), Positive control group (diabetic+glibenclamide), The healthy group (healthy+glibenclamide) was divided. After one month of gavage, blood samples were taken from the rats, and glucose, urea, creatinine, and albumin levels were measured. A comparison was made between the effect of hydroalcoholic extract of Sclerorhachis leptoclada and the common drug glibenclamide and the results of the groups were compared by using t-test and ANOVA. Results: The results showed that the administration of hydroalcoholic extract of Sclerorhachis leptoclada can significantly reduce glucose levels in experimental groups (diabetic+extract at doses of 150, 300, 600) compared with the diabetic group (p&lt;0.001) Also, the consumption of hydroalcoholic extract of Sclerorhachis leptoclada in diabetic patients causes a significant reduction in triglyceride, HDL and LDL levels in diabetic rats and has hypoglycemic effects. Conclusion: The results of this study showed that the consumption of hydroalcoholic extract of Sclerorhachis leptoclada in diabetic rats significantly reduces serum levels of glucose, triglyceride and creatinine in diabetic rats and has hypoglycemic effects

Rosemary Leaf Extract Inhibits Glycation, Breast Cancer Proliferation, and Diabetes Risks

Advanced glycation end products (AGEs) generated from glycation can cause inflammation-related diseases such as diabetes and cancer. The bioactive compounds of rosemary extract (RE) were extracted and incubated with sugar-protein rich food and breast cancer cell MCF-7 to investigate its inhibitory effect on glycation and cancer cell proliferation, respectively. The diabetic rat was dosed with RE to investigate its effect on blood glucose, serum malondialdehyde (MDA), cholesterol (CHO), triglycerides (TG), low-density lipoproteins (LDLs), anti-oxidation capacity (T-AOC), superoxide dismutase (SOD) activity, anti-oxidation capacity alkaline phosphatase (ALP), glutamate pyruvate transaminase (GPT), and glutamate oxaloacetate transaminase (GOT). The results show that RE contained seven major phenolics ranging from 17.82 mg/g for rosemarinic acid to 0.01 mg/g for ferulic acid on dry weight basis. It significantly lowered AGEs, carboxymethyl lysine (CML), and protein glycation in a sugar-protein rich intermediate-moisture-food (IMF) model. Furthermore, the survival rates of MCF-7 cells decreased to 6.02 and 2.16% after 96 h of incubation with 1.0 and 2.0 mg/mL of RE, respectively. The blood glucose, MDA, CHO, TG, and LDLs in diabetic rats of RE treatment were decreased. The RE treatment also enhanced the T-AOC and SOD activity. Furthermore, the RE treatment improved liver function through improving ALP, GPT, and GOT activities in diabetic rats. The results provide important information for the nutriaceutical and pharmaceutical application of rosemary extract.

Preparation of a Functional Rat LDL Receptor Minigene

The majority of the low-density lipoprotein (LDL) receptors present in the body are expressed in the liver. Therefore, plasma LDL levels significantly correlate with changes in the activity of the hepatic LDL receptor. Based on this, there is a need to understand the regulatory mechanisms that control the hepatic expression of the low-density lipoprotein (LDL) receptor. Herein, we have prepared a functional rat LDL receptor minigene construct that can produce mRNA after splicing. Sequence analysis suggests that this construct has the potential to code for a truncated version of LDL receptor protein. This minigene could be used as a research tool to identify small molecules, natural products, and regulators of the LDL receptor gene that could be developed into LDL receptor-specific activators for therapeutic use.

Monotherapy of experimental metabolic syndrome: I. Efficacy and safety.

Elevated plasma cholesterol, especially low density lipoprotein (LDL) cholesterol, is one of the major risk factors for atherosclerosis and coronary heart disease. Hereditary hypertriglyceridemic rats (hHTG) were developed as a new inbred model for the study of relationships between blood pressure and metabolic abnormalities. The aim of this work was to determine the cholesterol-lowering and antioxidant effects of the novel pyridoindol derivative SMe1EC2, compared to the cholesterol-lowering drug atorvastatin, in rats fed either standard or high-fat and high-cholesterol diet (HFC; 1% cholesterol and 7.5% lard fat). Male hHTG rats fed HFC (HTG+HFC) were administered with SMe1EC2 or atorvastatin (both 50 mg/kg/day p.o.) for 4 weeks. Physiological status of animals was monitored by the measurement of preprandial glucose levels and blood pressure. Lipid profile was characterized by the serum levels of total cholesterol (TC), HDL-, LDL-cholesterol and triglycerides (TRG). The concentration of thiobarbituric acid reactive substances (TBARS) was evaluated in the kidney, liver and serum. Further, the assessment of pro-inflammatory cytokines TNF-α, IL-1 and IL-6 in the serum was completed. Feeding the animals with HFC diet resulted in increased serum levels of TC, LDL and TRG. SMe1EC2 ameliorated serum levels of LDL in hHTG rats, both on standard and HFC diet. These effects were comparable with those of the standard hypolipidemicum atorvastatin. SMe1EC2 lowered blood pressure, tissue TBARS concentrations and serum IL-1 levels of HTG+HFC rats. Beneficial effects together with very good toxicity profile predestinate SMe1EC2 to be promising agent for further surveys related to metabolic syndrome features.

Toxicological Profile of Carbamazepine and Levetiracetam on Some Biochemical and Haematological Parameters in Rats

The prolonged usage of antiepileptic drugs has necessitated the need to study their toxicological profiles using in experimental animals. The toxicological effects of carbamazepine (CBZ) and levetiracetam (LEV) on some biochemical and haematological parameters were evaluated in rats. Haematological parameters evaluated include packed cell volume (PCV), Haemoglobin (Hb) and white blood cell (WBC), while some biochemical parameters studied were liver enzyme tests such as alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST), and lipid profiles tests such as total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL) and low density lipoprotein (LDL). In addition, the body weight and morphological assessment of the vital body organs were determined. Results showed that CBZ and LEV did not significantly affect the haematological parameters. Animals treated with CBZ showed a significant increase in TC and HDL levels at 400 and 1000 mg/kg doses. There was no significant increase in the TC, HDL, LDL and TG in rats treated with LEV. CBZ and LEV treated animals at the doses of 400 and 1000 mg/kg showed a significant increase in body weights from the 6th day after commencement of treatment. There was also a significant increase in the weights of the liver, kidney and heart of the animals treated with CBZ and LEV. The colour and texture of the organs did not change. However, no appreciable weight increase was observed with the lung.

Effects of aerobic exercise and dieting on chemerin and its receptor CMKLR1 in the livers of type 2 diabetic rats

To investigate the effects of aerobic exercise and dieting on chemerin and its receptor chemokine like receptor-1 (CMKLR1) in the livers of type 2 diabetes mellitus (DM) rats and its possible roles on the improvements of blood glucose and lipid metabolism. Fifty male SD rats were randomly divided into control group (Con, n=6) fed with normal diet and DM model group (n=44) fed with high fat diet. After 8-week feeding, DM model rats were intraperitoneal injected streptozocin (STZ) at the dose of 30 mg/kg body weight to establish DM rats. The successfully established diabetes rats were randomly divided into 4 groups (n=6):diabetes control group (DM), diabetes exercise group (EDM), diabetes dieting group by feeding normal diet (NDM) and diabetes exercise plus dieting group (ENDM). During the following 4 weeks, exercise rats participated in moderate intensity aerobic exercise on a treadmill with a progressing increasing load for 4 weeks. Fasting blood glucose (FBG) was determined by Roche glucometer. Serum levels of triglyceride (TG), total cholesterol (TC) and low-density lipoprotein (LDL)) were detected by using full automatic biochemical analyzer. The mRNA and protein expressions of chemerin and CMKLR1 in the livers were detected by real time PCR and Western blot, respectively. Accompanied with the increased serum levels of TC, TG, LDL and FBG in DM rats, the mRNA and protein levels of chemerinand CMKLR1 in the livers of DM rats were significant up-regulated. The serum levels of TC, TG, LDL and FBG were reduced in EDM, NDM and ENDM rats compared with those of DM rats, meanwhile,decreased protein levels of chemerin were found in the livers of EDM, NDM and ENDM rats with most significant in ENDM rats while increased protein levels of CMKLR1 in the livers of NDM and ENDM rats. Four weeks of aerobic exercise with or without dieting decreased chemerin and increased CMKLR1 in the livers of DM rats at the protein levels, which might be attributed to the improvement of blood glucose and lipid metabolism of DM rats.

Lowering effects of aspirin eugenol ester on blood lipids in rats with high fat diet.

BackgroundAspirin and eugenol were esterified to synthesize aspirin eugenol ester (AEE). As a pale yellow and odourless crystal, AEE reduced the gastrointestinal damage of aspirin and vulnerability of eugenol. The study was conducted to evaluate the preventive effects of AEE on blood lipids in rats with high fat diet (HFD).MethodsSuspensions of AEE and simvastatin were prepared in 5% carboxymethyl cellulose sodium (CMC-Na). In order to observe the intervention effects, the drugs and HFD were administrated at the same time. Based on individual weekly body weight (BW), AEE was intragastrically administrated at the dosage of 18, 36 and 54 mg/kg. Simvastatin (10 mg/kg) and CMC-Na (20 mg/kg) were used as control drug. After 6 weeks of administration, the changes of BW and blood lipid indices including triglyceride (TG), low density lipoprotein (LDL), high density lipoprotein (HDL) and total cholesterol (TCH) were determined in the experiment.ResultsThe rat blood lipids profile in model group was remarkably different after feeding 6-weeks HFD. TG, TCH and LDL indexes in model group were increased significantly compared with those in control group (p < 0.01). AEE at the dosage of 54 mg/kg significantly decreased levels of TG, TCH and LDL (p < 0.01), and slowed the rate of BW gain in comparison with model group (p < 0.05). Moreover, high dose AEE showed better effects than simvastatin on reducing TCH level and similar effects on TG, HDL and LDL.ConclusionAEE could remarkably reduce levels of TG, TCH and LDL in rats with high fat diet, and slow the rate of body weight gain. It was conducted that AEE was a potential candidate on reducing blood lipids level. The mechanism of action of AEE should be investigated in further studies.

Effect of Moringa Oleifera on Lipid Profile in Rats

Background: Coronary heart disease, stroke, atherosclerosis and hyperlipidemia are primary causes of death worldwide. Moringa Oleifera tree was used as a health supplement introduced to Africa from India. Its leaves have various biological activities, including hypolipidemic effect. Objective(s): The aim of present study was to assess the effect of Moringa Oleifera consumption on lipid profile and histopathology of the liver in hyperlipidemic rats. Methods: A total of 50 male albino rats were divided into five equal groups. Group I was left as control and fed on standard diet only. Group II was fed on standard diet and orally injected with 400 mg/kg of rat body weight extract of Moringa Oleifera. Hyperlipidemia was induced in the remaining 30 rats by feeding an atherogenic diet for four weeks. Group III was fed on atherogenic diet only. Group IV was fed on atherogenic diet and orally injected with 400 mg/kg of rat body weight extract of Moringa Oleifera. Group V was fed on atherogenic diet with 2mg/kg of rat body weight Atorvastatin drug. Lipid profile of rat blood was measured including total cholesterol (TC), triglyceride (TG), low density lipoprotein (LDL), high density lipoprotein (HDL), and very low density lipoprotein (VLDL). Liver tissue was evaluated by carrying out histopathological examination. Results: The rats fed on Moringa Oleifera showed a significant decrease in total cholesterol and LDL by 26.8% and 40.6% respectively compared to baseline values after 4 weeks. Although VLDL and TG showed slight increase by 5.6% and 5.1% respectively, they were still within the normal range. Otherwise, there was a significant increase in LDL, VLDL, TC, and total TG levels in rats fed on atherogenic diet only by 17.13%, 195.4%, 29.2%, and 193% respectively compared to baseline values after 4 weeks. Atorvastatin drug affected the HDL level, as it increased by 16.4% % 28% from baseline after two and four weeks respectively. Atorvastatin and Moringa Oleifera decreased VLDL level by 53.9% & 36.5% respectively when compared to rats fed on atherogenic diet. Conclusion: Moringa Oleifera was comparable to hypolipidemic medication (Atorvastatin) in improving the lipid profile of rats fed on atherogenic diet. Moringa Oleifera intake is more effective in prevention than in treatment of hyperlipidemia. Keywords: lipid profile, atherosclerosis, Moringa Oleifera, atherogenic diet, atorvastatin.

Protective effect of dietary fenugreek (Trigonella foenum-graecum) seeds and garlic (Allium sativum) on induced oxidation of low-density lipoprotein in rats.

Dietary fenugreek seeds (Trigonella foenum-graecum) and garlic (Allium sativum) have been previously observed to have cardioprotective influence in experimentally induced myocardial infarction in rats. Since low-density lipoprotein (LDL) oxidation is a key factor in the arteriosclerotic process, we evaluated their potential in minimizing the LDL oxidation in rats. Fenugreek seeds, garlic, and their combination were included along with a high-cholesterol diet for 8 weeks. Iron-induced oxidation of LDL in vivo was considerably lowered by dietary fenugreek and garlic. The extent of copper-induced oxidation of isolated LDL in vitro was also significantly lesser in fenugreek-fed or fenugreek+garlic-fed rats. Anodic electrophoretic mobility of the oxidized LDL on agarose gel in case of spice-fed animals was decreased and hence consistent with the observed protective influence on LDL oxidation. Dietary fenugreek, garlic, and their combination significantly lowered lipid peroxide levels in plasma, liver, and heart in iron (II)-administered rats. The results suggest that these two dietary spices have protective effect on LDL oxidation under normal situation as well as in hypercholesterolemic situation. The protective effect of the combination of dietary fenugreek and garlic on LDL oxidation both in vivo and in vitro was greater than that of the individual spices. The protective effect of dietary fenugreek and garlic on LDL oxidation both in vivo and in vitro as evidenced in the present study is suggestive of their cardioprotective potential since LDL oxidation is a key factor in the arteriosclerotic process.

Houttuynia cordata alleviates high-fat diet-induced non-alcoholic fatty liver in experimental rats

Context: Houttuynia cordata Thunb. (Saururaceae) is used traditionally in Asian countries to treat various disease symptoms.Objective: To study the effect of H. cordata ethyl acetate (HC-EA) extract on high-fat diet (HFD)-induced hepatic steatosis.Materials and methods: HFD fed rats were orally dosed with HC-EA (100, 200, or 300 mg/kg) once daily for 8 weeks and the lipid profiles and protein expressions in hepatocytes were evaluated.Results: HFD rats showed an increase (p < 0.05) in the plasma lipid levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), free fatty acids (FFAs), and reduced the high-density lipoprotein (HDL) levels. Treatment with HC-EA extract (300 mg/kg) restored the changes in plasma lipid levels of TC, TG, LDL, FFA, and HDL in HFD-fed rats by 34.8, 31.1, 51.4, 32.4, and 56.3%, respectively, compared with control rats (p < 0.01). HC-EA treatment also decreased the hepatic lipid accumulation (p < 0.001 at 300 mg/kg) and improved hepatic histological lesions. HC-EA extract enhanced AMPK phosphorylation and its primary downstream targeting enzyme, acetyl-CoA carboxylase (ACC), up-regulated the gene expression of carnitine palmitoyl transferase-1 (CPT-1), and down-regulated sterol regulatory element binding protein 1, fatty acid synthase, and glutamate pyruvate transaminase protein levels in the livers of HFD-fed rats. Further, the increased expression of hepatic cytochrome P450 (CYP) composition such as CYP2E1 and CYP4A was also suppressed.Discussion and conclusion: Data suggest that HC-EA extract might act by regulating the AMPK-dependent pathway and related mediators and might be used in treating obesity-related liver diseases.

Experimental study on effect of hydroalcoholic extract of Emblica officinalis fruits on glucose homeostasis and metabolic parameters

Polyphenols from natural source are potential therapeutics that act alone or supplement anti-diabetic drugs in the prevention and treatment of diabetes. The present investigation was undertaken to study the effect of hydroalcoholic extract (HE) of fruits of Emblica officinalis on type 1 diabetic rats. Diabetes was induced by streptozotocin (STZ) (45 mg/kg i.v.). HE (100 mg/kg, p.o.) was administered for 4 weeks and at the end of treatment, blood samples were collected and analyzed for various biochemical parameters. STZ produced a diabetic state exhibiting all the cardinal symptoms such as loss of body weight, polydipsia, polyuria, glucosuria, polyphagia, hypoinsulinemia, and hyperglycemia associated with hypercholesterolemia and hypertriglyceridemia. Treatment with HE prevented cardinal symptoms and caused significant decrease in fasting serum glucose, AUCglucose, cholesterol, triglyceride, low-density lipoprotein (LDL) and very LDL in diabetic rats. However, insulin, AUCinsulin, and serum high-density lipoprotein level were not significantly altered by treatment. Treatment also reduced lipid peroxidation and increased anti-oxidant parameters in the liver homogenates of diabetic rats. Polyphenol enriched fraction of HE significantly improved disarranged carbohydrate and lipid metabolism of chemically induced diabetes in rats. The mechanism of its anti-diabetic activity appears to be either improvement in peripheral glucose utilization, increased insulin sensitivity, or anti-oxidant property.

Effect of α-lipoic acid and exercise training on cardiovascular disease risk in obesity with impaired glucose tolerance

Obese subjects with impaired glucose tolerance (IGT) are more susceptible than healthy individuals to oxidative stress and cardiovascular disease. This randomised controlled investigation was designed to test the hypothesis that α-lipoic acid supplementation and exercise training may elicit favourable clinical changes in obese subjects with IGT. All data were collected from 24 obese (BMI ≥ 30 kg/m2) IGT patients. Following participant randomisation into two groups, fasting venous blood samples were obtained at baseline, and before and following intervention. The first group consisted of 12 participants who completed a 12 week control phase followed by 12 weeks of chronic exercise at 65% HRmax for 30 minutes a day, 5 days per week, while ingesting 1 gram per day of α-lipoic acid for 12 weeks. The second group consisted of 12 participants who completed the same 12 week control phase, but this was followed by 12 weeks of 1 gram per day of α-lipoic acid supplementation only (no exercise). The main findings show a comparatively greater rate of low density lipoprotein (LDL) oxidation in the group consisting of α-lipoic acid only (p < 0.05 vs. pre intervention), although total oxidant status was lower post intervention (p < 0.05 vs. baseline) in this group. However, exercise and α-lipoic acid in combination attenuates LDL oxidation. Furthermore, in the α-lipoic acid supplement plus exercise training group, total antioxidant capacity was significantly increased (p < 0.05 vs. baseline and pre intervention). Body fat percentage and waist and hip circumference decreased following exercise training (p < 0.05 vs. post intervention). There were no selective treatment differences for a range of other clinical outcomes including glycaemic regulation (p > 0.05). These findings report that α-lipoic acid ingestion may increase the atherogenicity of LDL when ingested in isolation of exercise, suggesting that in IGT the use of this antioxidant treatment does not ameliorate metabolic disturbances, but instead may detrimentally contribute to the pathogenesis of atherosclerosis and development of CVD. However, when α-lipoic acid is combined with exercise, this atherogenic effect is abolished.

P2-57 Diabetes, obesity and some risk factors among adults in Mongolia: a nationwide cross-sectional survey

IntroductionTo determine the population-based prevalence of diabetes, impaired fasting glucose (IFG), obesity and non-communicable disease risk factors in Mongolia.MethodsA national sample involving 2280 participants aged ≥40 years were examined in...