scholarly journals The effect of red grape seed extract on serum paraoxonase activity in patients with mild to moderate hyperlipidemia

2016 ◽  
Vol 134 (3) ◽  
pp. 234-239 ◽  
Author(s):  
Hassan Argani ◽  
Amir Ghorbanihaghjo ◽  
Hamid Vatankhahan ◽  
Nadereh Rashtchizadeh ◽  
Sina Raeisi ◽  
...  

ABSTRACT: CONTEXT AND OBJECTIVE: Red grape seed extract (RGSE) contains oligomeric proanthocyanidin complexes as a class of flavonoids. These compounds are potent antioxidants and exert many health-promoting effects. This study aimed to determine the effects of RGSE on serum levels of triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), apolipoprotein AI (apo-AI) levels and paraoxonase (PON) activity in patients with mild to moderate hyperlipidemia (MMH). DESIGN AND SETTINGS: A randomized double-blind placebo-controlled clinical trial was conducted at Shahid-Modarres Hospital (Tehran, Iran) and Tabriz University of Medical Sciences. Seventy MMH patients were randomly assigned to receive treatment (200 mg/day of RGSE) or placebo for eight weeks. RESULTS: Significant elevation in serum levels of apo-AI (P = 0.001), HDL-C (P = 0.001) and PON activity (P = 0.001) and marked decreases in concentrations of TC (P = 0.015), TG (P = 0.011) and LDL-C (P = 0.014) were found in the cases. PON activity was significantly correlated with apo-AI (r = 0.270; P < 0.01) and HDL-C (r = 0.45; P < 0.001). Significant differences between the RGSE and control groups (before and after treatment) for TC (P = 0.001), TG (P = 0.001), PON (P = 0.03), apo-AI (P = 0.001) and LDL-C (P = 0.002) were seen. CONCLUSION: It is possible that RGSE increases PON activity mostly through increasing HDL-C and apo-AI levels in MMH patients. It may thus have potential beneficial effects in preventing oxidative stress and atherosclerosis in these patients.

2013 ◽  
Vol 16 (3) ◽  
pp. 255-258 ◽  
Author(s):  
Seyed-Mostafa Razavi ◽  
Sharareh Gholamin ◽  
Ali Eskandari ◽  
Nakta Mohsenian ◽  
Amir Ghorbanihaghjo ◽  
...  

2021 ◽  
Vol 12 ◽  
Author(s):  
Rana Turgut ◽  
Murat Kartal ◽  
Esra Küpeli Akkol ◽  
İlker Demirbolat ◽  
Hakkı Taştan

Detoxification enzymes involved in human metabolism works to minimize the potential xenobiotic-induced damage constantly. Studies have revealed that toxin accumulation plays an important role in the etiology of cardiovascular disease. This study has been designed to provide evidence of medicinal use of bentonite, turmeric (Curcuma longa L.), grape (Vitis vinifera L.) seed, flaxseed (Linum usitatissimum L.), and psyllium (Plantago ovata L.) as detoxification and cholesterol-lowering agents using a hypercholesterolemic model in mice. The potential hypocholesterolemic effects and detoxification ability of these ingredients were evaluated at the same time: Total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglyceride, glucose, aspartate aminotransferase, alanine aminotransferase, malondialdehyde, plasma total antioxidant activity, nitric acid, leptin levels and glutathione, glutathione peroxidase, lipid peroxidation, superoxide dismutase and catalase values were measured. It was determined that GBTF group (grape seed extract, bentonite, turmeric, and flaxseed), GBTP group (grape seed extract, bentonite, turmeric, and psyllium), and GBT group (grape seed extract, bentonite, and turmeric) of the tested materials decreased the serum total cholesterol concentration by 64.8, 57.5, and 48.9%, respectively, in mice fed a high cholesterol diet. In addition, it was determined that some detoxification parameters such as superoxide dismutase, catalase, glutathione, and glutathione peroxidase were statistically significantly reversed in GBTF, GBTP, and GBT groups. Flaxseed, psyllium, and bentonite clay did not show significant effects in reducing total cholesterol; however, GBTF, GBTP, and GBT groups interventions had a significant effect in reducing total cholesterol levels. Moreover, it was observed that adding flaxseed or psyllium to the GBT group increased the cholesterol-lowering effect. Therefore, it can be thought that this significant effect is due to the synergistic effect of the raw materials. When the results obtained were evaluated, it was seen that the cholesterol-lowering and detoxification effects of the combinations were higher than from the effect of natural material used alone. As a result, combinations of some of these ingredients have a positive effect on reducing the risk of cardiovascular disease.


2020 ◽  
Author(s):  
Saber Jafari-Maskouni ◽  
Mansour Shahraki ◽  
Milad Daneshi-Maskooni ◽  
Alireza Dashipour ◽  
Ali Shamsi-Goushki ◽  
...  

Abstract Background: Diabetes mellitus is the most common metabolic disorder worldwide. Our aim was to determine the effects of bunium persicum (BP) on serum glucose indices, lipid profile, and nesfatin-1 levels among overweight or obese T2DM patients.Methods: The place of participant recruitment was the diabetic clinic of Bu-Ali hospital in Zahedan. Based on the eligibility criteria, 60 participants were randomly divided into two groups as BP (n=30) or placebo (n=30). The supplementation was one 1000 mg capsules 2 times/day BP with launch and dinner for 8 weeks. Bodyweight, Waist circumference, serum nesfatin-1, fasting blood sugar (FBS), insulin (FBI), total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were measured. Quantitative insulin sensitivity checks index (QUICKI), homeostasis model assessment-insulin resistance (HOMA-IR) and Body Mass Index (BMI) were also calculated.Results: In comparison with placebo, PB significantly increased QUICKI and decreased FBS, HOMA-IR, BMI and WC (P<0.05). At the end of the study after adjustment for confounders, the changes were similar (P<0.05) with an exception for QUICKI which had a trend (P=0.054) and WC (P > 0.05). The differences in the FBI, TG, TC, LDL, HDL and Nesfatin-1 were not significant (P>0.05).Conclusion: PB supplement improved serum glucose indices and decreased BMI among overweight or obese T2DM patients; though, further trials are suggested to confirm results.


Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1692
Author(s):  
Teresa Grohmann ◽  
Caroline Litts ◽  
Graham Horgan ◽  
Xuguang Zhang ◽  
Nigel Hoggard ◽  
...  

Intervention with fruit extracts may lower glucose and lipid levels, as well as blood pressure. We reviewed the efficacy of bilberry and grape seed extracts to affect these outcomes across populations with varying health status, age and ethnicity, across intervention doses and durations, in 24 intervention studies with bilberry and blackcurrant (n = 4) and grape seed extract (n = 20). Bilberry and blackcurrant extract lowered average levels of glycated hemoglobin (HbA1c), at least in Chinese subjects, especially in those who were older, who were diagnosed with Type 2 Diabetes Mellitus (T2DM) and who were participating in longer-term studies. We also found good evidence that across studies and in subjects with hypercholesterolemia, T2DM or metabolic syndrome, intervention with bilberry and blackcurrant extract, and to some extent grape seed extract, significantly lowered total and low density lipoprotein (LDL) cholesterol levels after four weeks. Intervention with grape seed extract may reduce systolic and diastolic blood pressure in subjects with hypertension or metabolic syndrome. Differential responsiveness in cholesterol and blood pressure outcomes between stratified populations could not be explained by age, dose or study duration. In conclusion, bilberry and blackcurrant extract appears effective in lowering HbA1c and total and LDL cholesterol, whereas grape seed extract may lower total and LDL cholesterol, and blood pressure, in specific population groups.


2013 ◽  
Vol 110 (12) ◽  
pp. 2234-2241 ◽  
Author(s):  
Rouyanne T. Ras ◽  
Peter L. Zock ◽  
Yvonne E. M. P. Zebregs ◽  
Neil R. Johnston ◽  
David J. Webb ◽  
...  

Dietary polyphenols, such as those from grape products, may exert beneficial effects on cardiovascular health, including anti-hypertensive effects. We investigated the effect of a specific grape seed extract (GSE) rich in low-molecular-weight polyphenolic compounds on ambulatory blood pressure (ABP) in untreated subjects with pre- and stage I hypertension. In addition, potential mechanisms that could underlie the hypothesised effect of GSE on blood pressure (BP), and platelet aggregation, were explored. The study was designed as a double-blind, placebo-controlled, randomised, parallel-group intervention study including seventy healthy subjects with systolic BP between 120 and 159 mmHg. A 1-week run-in period was followed by an 8-week intervention period, during which subjects consumed capsules containing either 300 mg/d of GSE or a placebo (microcrystalline cellulose). Before and after the intervention, daytime ABP readings, 24 h urine samples and fasting and non-fasting blood samples were taken. The mean baseline systolic BP was 135·8 (se 1·3) mmHg and diastolic BP was 81·5 (se 0·9) mmHg. BP values were modestly, but not significantly, affected by the polyphenol-rich GSE treatment v. placebo with an effect of − 3·0 mmHg for systolic BP (95 % CI − 6·5, 0·5) and − 1·4 mmHg for diastolic BP (95 % CI − 3·5, 0·6). Vasoactive markers including endothelin-1, NO metabolites and asymmetric dimethylarginine, plasma renin activity and platelet aggregation were not affected by the GSE intervention. Our findings show that consumption of polyphenol-rich GSE does not significantly lower ABP in untreated subjects with pre- and stage I hypertension.


2020 ◽  
Author(s):  
Saber Jafari-Maskouni ◽  
Mansour Shahraki ◽  
Milad Daneshi-Maskooni ◽  
Alireza Dashipour ◽  
Ali Shamsi-Goushki ◽  
...  

Abstract Background: Diabetes mellitus is the most common metabolic disorder worldwide. We aimed to determine the effects of Bunium Persicum (BP) on serum glucose indices, lipid profile, and nesfatin-1 levels in overweight or obese T2DM patients.Methods: Participant recruitment took place in the diabetic clinic of Bu-Ali hospital in Zahedan. Based on the eligibility criteria, 60 participants were randomly divided into two groups, namely BP (n=30) and placebo (n=30). The supplementation was one 1000 mg capsule 2 times /day BP with meals (lunch and dinner) for 8 weeks. Bodyweight, waist circumference, serum nesfatin-1, fasting blood sugar (FBS) and insulin (FBI), total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were measured. Quantitative insulin sensitivity checks index (QUICKI), homeostasis model assessment-insulin resistance (HOMA-IR), and Body Mass Index (BMI) were also calculated.Results: In comparison with placebo, BP significantly decreased FBS, HOMA-IR, and BMI (P<0.05). The differences in the FBI, QUICKI, TG, TC, LDL, HDL, WC, and Nesfatin-1 were not significant (P>0.05).Conclusion: BP supplement improved serum glucose indices and decreased BMI among overweight or obese T2DM patients; though, further trials are suggested to confirm results.Trial Registration: Iranian Registry of Clinical Trials (IRCT), IRCT20181207041876N1, Registered 18/01/2019, https://irct.ir/trial/35752


2000 ◽  
Vol 28 (2) ◽  
pp. 47-68 ◽  
Author(s):  
W Insull ◽  
J Isaacsohn ◽  
P Kwiterovich ◽  
P Ma ◽  
R Brazg ◽  
...  

This pivotal, multicentre, double-blind, parallel-group study evaluated the efficacy and safety of cerivastatin 0.8 mg. Patients with primary hypercholesterolaemia were randomized, after 10 weeks' dietary stabilization on an American Heart Association (AHA) Step I diet, to treatment with cerivastatin 0.8 mg ( n = 776), cerivastatin 0.4 mg ( n = 195) or placebo ( n = 199) once daily for 8 weeks. Cerivastatin 0.8 mg reduced mean low density lipoprotein-cholesterol (LDL-C) by 41.8% compared with cerivastatin 0.4 mg (–35.6%, P < 0.0001) or placebo. In 90% of patients receiving cerivastatin 0.8 mg LDL-C was reduced by 23.9–58.4% (6th–95th percentile). Overall attainment of the National Cholesterol Education Program (NCEP) goal was achieved by 84% of patients receiving cerivastatin 0.8 mg and by 59% of those with coronary heart disease (CHD). In the sub-population meeting the NCEP criteria for pharmacological therapy for LDL-C reduction, 74.6% of patients, including the 59% with CHD, reached the goal with cerivastatin 0.8 mg. Cerivastatin 0.8 mg also reduced mean total cholesterol by 29.9%, apolipoprotein B by 33.2% and median triglycerides by 22.9% (all P < 0.0001). Mean high density lipoprotein-cholesterol (HDL-C) and apolipoprotein A1 were elevated 8.7% ( P < 0.0001) and 4.5% ( P < 0.0001), respectively, by cerivastatin 0.8 mg. Reductions of triglyceride and elevation in HDL-C were dependent upon triglyceride baseline levels; in patients having baseline triglyceride levels 250–400 mg/dl, cerivastatin 0.8 mg reduced median triglycerides by 29.5% and elevated HDL-C by 13.2%. Cerivastatin 0.8 mg was well tolerated. The most commonly reported adverse events included headache, pharyngitis and rhinitis (4–6%). Symptomatic creatine kinase elevations > 10 times upper limit of normal occurred in 0%, 1% and 0.9% of patients receiving placebo, cerivastatin 0.4 mg or cerivastatin 0.8 mg, respectively. Cerivastatin 0.8 mg is an effective and safe treatment for patients with primary hypercholesterolaemia who need aggressive LDL-C lowering in order to achieve NCEP-recommended levels.


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