The Efficacy of Red Grape Seed Extract on Lipid Profile and Oxidized Low-Density Lipoprotein (OX-LDL)

NCT ID: NCT00713167

Last Updated: 2009-05-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2/PHASE3

Total Enrollment

55 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-07-31

Study Completion Date

2009-02-28

Brief Summary

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Antioxidants are potent scavengers of free radicals and serve as inhibitors of neoplastic processes. A large number of synthetic and natural antioxidants are known to induce beneficial effects on human health and disease prevention. Cardioprotective ability of grape seed extract polyphenols (GSEP) was studied in animals and humans. It has been suggested that grape seed proanthocyanidins have cardioprotective effects against reperfusion-induced injury of free radicals after ischemia. In another study, it is suggested that proanthocyanidins, the major polyphenols in red wine, might trap reactive oxygen species in aqueous series such as plasma and interstitial fluid of the arterial wall; thereby inhibiting oxidation of low-density lipoprotein (LDL) and showing an antiatherosclerotic activity. The only human model study designed to evaluate the effect of a standardized formulation of a GSEP (leucoselect-phytosome \[LP\]) on the susceptibility of LDL to oxidation in a group of heavy smokers, revealed that the antioxidant potential of GSEP may be effective in oxidative stress (smoking); however more investigational data are needed before wider use in clinical settings. Based on these observations, the investigators decided to evaluate the effect of GSEP in reducing OX-LDL in patients diagnosed with mild hyperlipidemia.

Detailed Description

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Conditions

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Hyperlipidemia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Grape Seed Extract

Enrolled patients who are randomly assigned to receive Grape Seed Extract capsules

Group Type EXPERIMENTAL

Grape Seed Extract (Vitagrape)

Intervention Type DRUG

Drug {Each Containing: Grape Seed Extract100 mg +...}

1 capsule twice daily for 2 months

Placebo

Placebo enrolled patients who are randomly assigned to receive placebo of Grape Seed Extract

Group Type PLACEBO_COMPARATOR

Placebo of Grape Seed Extract

Intervention Type DRUG

Placebo {Each Containing: Gelatin 17mg + Cellulose Microcrystalline (Avicel) 67 mg + Dicalcium Phosphate 216mg}

1 capsule twice daily for 2 months

Interventions

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Grape Seed Extract (Vitagrape)

Drug {Each Containing: Grape Seed Extract100 mg +...}

1 capsule twice daily for 2 months

Intervention Type DRUG

Placebo of Grape Seed Extract

Placebo {Each Containing: Gelatin 17mg + Cellulose Microcrystalline (Avicel) 67 mg + Dicalcium Phosphate 216mg}

1 capsule twice daily for 2 months

Intervention Type DRUG

Other Intervention Names

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Vitagrape Iran Ministry of Health Registration Number: 5/92/43198

Eligibility Criteria

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Inclusion Criteria

1. Triglyceride \> 150 mg/dl
2. Total Cholesterol \> 200 mg/dl

Exclusion Criteria

1. Severe hyperlipidemia (Triglyceride \> 300 mg/dl,Total Cholesterol \> 250 mg/dl)
2. Usage of antilipid drugs
3. Herbivore Diet
4. Alcoholism
5. Heart failure
6. Known cases of any malignancy
7. BMI \> 30 kg/M2
8. Chronic Hepatic Diseases
9. Smoking
10. Chronic Renal Failure
Minimum Eligible Age

21 Years

Maximum Eligible Age

64 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Tabriz University

OTHER

Sponsor Role collaborator

Shahid Beheshti University of Medical Sciences

OTHER

Sponsor Role lead

Responsible Party

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Shahid Beheshti University (MC)

Principal Investigators

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Maryam Keshtkar-Jahromi, MD,

Role: STUDY_DIRECTOR

Shahid Beheshti University (MC)

Hassan Argani, MD

Role: STUDY_CHAIR

Shahid Beheshti University (MC)

Abbas Delazar, PhD

Role: PRINCIPAL_INVESTIGATOR

Tabriz University

Ali Eskandari, MD

Role: PRINCIPAL_INVESTIGATOR

Shahid Beheshti University (MC)

Sharareh Gholamin, MD

Role: PRINCIPAL_INVESTIGATOR

Shahid Beheshti University (MC)

Seyed Mostafa Razavi, MD

Role: PRINCIPAL_INVESTIGATOR

Shahid Beheshti University (MC)

Locations

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Ghorbanihaghjo

Tabriz, East Azarbayejan, Iran

Site Status

Maryam

Tehran, Tehran Province, Iran

Site Status

Countries

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Iran

References

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Bagchi D, Bagchi M, Stohs SJ, Das DK, Ray SD, Kuszynski CA, Joshi SS, Pruess HG. Free radicals and grape seed proanthocyanidin extract: importance in human health and disease prevention. Toxicology. 2000 Aug 7;148(2-3):187-97. doi: 10.1016/s0300-483x(00)00210-9.

Reference Type BACKGROUND
PMID: 10962138 (View on PubMed)

Bagchi D, Sen CK, Ray SD, Das DK, Bagchi M, Preuss HG, Vinson JA. Molecular mechanisms of cardioprotection by a novel grape seed proanthocyanidin extract. Mutat Res. 2003 Feb-Mar;523-524:87-97. doi: 10.1016/s0027-5107(02)00324-x.

Reference Type BACKGROUND
PMID: 12628506 (View on PubMed)

Pataki T, Bak I, Kovacs P, Bagchi D, Das DK, Tosaki A. Grape seed proanthocyanidins improved cardiac recovery during reperfusion after ischemia in isolated rat hearts. Am J Clin Nutr. 2002 May;75(5):894-9. doi: 10.1093/ajcn/75.5.894.

Reference Type BACKGROUND
PMID: 11976164 (View on PubMed)

Joshi SS, Kuszynski CA, Bagchi D. The cellular and molecular basis of health benefits of grape seed proanthocyanidin extract. Curr Pharm Biotechnol. 2001 Jun;2(2):187-200. doi: 10.2174/1389201013378725.

Reference Type BACKGROUND
PMID: 11480422 (View on PubMed)

Bagchi D, Garg A, Krohn RL, Bagchi M, Bagchi DJ, Balmoori J, Stohs SJ. Protective effects of grape seed proanthocyanidins and selected antioxidants against TPA-induced hepatic and brain lipid peroxidation and DNA fragmentation, and peritoneal macrophage activation in mice. Gen Pharmacol. 1998 May;30(5):771-6. doi: 10.1016/s0306-3623(97)00332-7.

Reference Type BACKGROUND
PMID: 9559333 (View on PubMed)

Yamakoshi J, Kataoka S, Koga T, Ariga T. Proanthocyanidin-rich extract from grape seeds attenuates the development of aortic atherosclerosis in cholesterol-fed rabbits. Atherosclerosis. 1999 Jan;142(1):139-49. doi: 10.1016/s0021-9150(98)00230-5.

Reference Type BACKGROUND
PMID: 9920515 (View on PubMed)

Zhang FL, Gao HQ, Wu JM, Ma YB, You BA, Li BY, Xuan JH. Selective inhibition by grape seed proanthocyanidin extracts of cell adhesion molecule expression induced by advanced glycation end products in endothelial cells. J Cardiovasc Pharmacol. 2006 Aug;48(2):47-53. doi: 10.1097/01.fjc.0000242058.72471.0c.

Reference Type BACKGROUND
PMID: 16954821 (View on PubMed)

Vigna GB, Costantini F, Aldini G, Carini M, Catapano A, Schena F, Tangerini A, Zanca R, Bombardelli E, Morazzoni P, Mezzetti A, Fellin R, Maffei Facino R. Effect of a standardized grape seed extract on low-density lipoprotein susceptibility to oxidation in heavy smokers. Metabolism. 2003 Oct;52(10):1250-7. doi: 10.1016/s0026-0495(03)00192-6.

Reference Type BACKGROUND
PMID: 14564675 (View on PubMed)

Other Identifiers

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SBMU 87-01-106-5694

Identifier Type: -

Identifier Source: org_study_id

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