scholarly journals Grape Seed Extract Positively Modulates Blood Pressure and Perceived Stress: A Randomized, Double-Blind, Placebo-Controlled Study in Healthy Volunteers

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 654
Author(s):  
Christiane Schön ◽  
Pietro Allegrini ◽  
Karin Engelhart-Jentzsch ◽  
Antonella Riva ◽  
Giovanna Petrangolini
Keyword(s):  
Blood Pressure ◽  
Healthy Volunteers ◽  
Perceived Stress ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Mild Hypertensive

It is well established that maintaining healthy blood pressure is fundamental in order to avoid disorders to the heart and blood vessels. In prevention, and alongside pharmacological therapy, the use of natural substances has been proven to be extremely helpful for pre- and mild hypertensive subjects. Our study was therefore focused on the effects, both in vitro and in humans, of a grape seed extract, Enovita (GSEe), a highly standardized extract in polyphenols of Vitis vinifera L. The in vitro human umbilical vein endothelial cells (HUVEC) model was chosen to explore the extract properties related to vascular inflammation/vasodilation. A significant reduction of both soluble Inter-Cellular Adhesion Molecule-1 (sICAM) and endothelin-1 secretion/release was induced by GSEe in HUVEC cells. A randomized, double-blind, placebo-controlled clinical study in healthy volunteers was further performed to investigate GSEe benefits. In healthy volunteers, both supplementations significantly modulated blood pressure, with a pronounced effect after GSEe tablets (300 mg/day for 16 weeks) in respect to placebo. In the male gender subgroup, no placebo effect was observed as it was for the female group. As an additional outcome, an overall GSEe positive modulation emerged on mood related to stress perception. Thus, GSEe resulted in a benefit of modulating endothelial functionality and blood pressure. It was noteworthy that GSEe relieved the perceived stress, promising new future perspectives on mood comfort.

scholarly journals Effect of polyphenol-rich grape seed extract on ambulatory blood pressure in subjects with pre- and stage I hypertension

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 ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Platelet Aggregation ◽  
Ambulatory Blood Pressure ◽  
Plasma Renin ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
Stage I ◽  
Double Blind ◽  
Dietary Polyphenols

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.

Grape Seed Extract Complex (FFM-GS) Inhibits Postmenopausal Symptoms: In Vitro and In Vivo S

2019 ◽  
Vol 48 (3) ◽  
pp. 297-305
Author(s):  
Minhee Lee ◽  
Da-Eun Nam ◽  
Soo-Jeung Park ◽  
Dakyung Kim ◽  
Jeong-Moon Yun ◽  
...  
Keyword(s):  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
Postmenopausal Symptoms

scholarly journals Efficacy of Bilberry and Grape Seed Extract Supplement Interventions to Improve Glucose and Cholesterol Metabolism and Blood Pressure in Different Populations—A Systematic Review of the Literature

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1692
Author(s):  
Teresa Grohmann ◽  
Caroline Litts ◽  
Graham Horgan ◽  
Xuguang Zhang ◽  
Nigel Hoggard ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Metabolic Syndrome ◽  
Ldl Cholesterol ◽  
Cholesterol Metabolism ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Good Evidence ◽  
Seed Extract

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.

scholarly journals Grape Seed Extract as a Potential Remineralizing Agent: A Comparative in vitro Study

2012 ◽  
Vol 13 (4) ◽  
pp. 425-430 ◽  
Author(s):  
Shiny Benjamin ◽  
Roshni LNU ◽  
Sabeena Susan Thomas ◽  
Mohan Thomas Nainan
Keyword(s):  
Laser Scanning ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Confocal Laser Scanning Microscope ◽  
Seed Extract ◽  
Confocal Laser ◽  
Scanning Microscope ◽  
Caries Lesions ◽  
Calcium Glycerophosphate

ABSTRACT Objective Remineralization is an effective treatment that may stop or reverse early tooth decay. Grape seed extract (GSE) is the potential remineralizing agent under investigation. Materials and methods Sound human tooth sections were obtained from the cervical portion of the root and stored in demineralizing solution at 37°C for 96 hours to induce artificial root caries lesions. The sections were divided into four treatment groups including 6.5% grape seed extract, sodium monofluorophosphate (220 ppm) with 0.05% calcium glycerophosphate, 0.5% calcium glycerophosphate and control (no treatment). An in vitro pH cycling model was used to cycle the demineralized specimens through treatment solutions, acidic buffer and neutral buffer for 8 days at 6 cycles per day. Subsequently, they were evaluated using confocal laser scanning microscope. Data were analyzed using analysis of variance (p < 0.05). Results GSE revealed less demineralization and more remineralization compared with other groups. Conclusion GSE promotes remineralization of artificial root caries lesions. Clinical significance The search for the perfect remineralizing agent continues to this day. GSE could be a welcome addition to the remineralization armamentarium. Abbreviations and acronyms GSE: Grape seed extract; ppm: Parts per million; CaGP: Calcium glycerophosphate; CLSM: Confocal laser scanning microscope; ANOVA: Analysis of variance; PA: Proanthocyanidin; CEJ: Cementoenamel junction; mM: Millimole; CaCl2.2H2O: Calcium chloride dihydrate; KH2PO4: Potassium dehydrate phosphate; K2HPO4: Dipotassium phosphate; dH2O: Deionized water; w/v: Weight by volume; ROD: Relative optical density; nm: Nanometer; SD: Standard deviation. How to cite this article Benjamin S, Roshni, Thomas SS, Nainan MT. Grape Seed Extract as a Potential Remineralizing Agent: A Comparative in vitro Study. J Contemp Dent Pract 2012;13(4):425-430.

Effect of grape seed extract on blood pressure in subjects with the metabolic syndrome

Metabolism ◽  
2009 ◽  
Vol 58 (12) ◽  
pp. 1743-1746 ◽  
Author(s):  
Brahmesh Sivaprakasapillai ◽  
Indika Edirisinghe ◽  
Jody Randolph ◽  
Francene Steinberg ◽  
Tissa Kappagoda
Keyword(s):  
Blood Pressure ◽  
Metabolic Syndrome ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
The Metabolic Syndrome

scholarly journals Olive and grape seed extract prevents post-traumatic osteoarthritis damages and exhibits in vitro anti IL-1β activities before and after oral consumption

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Elsa Mével ◽  
Christophe Merceron ◽  
Claire Vinatier ◽  
Stéphanie Krisa ◽  
Tristan Richard ◽  
...  
Keyword(s):  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
Oral Consumption ◽  
Before And After ◽  
Post Traumatic
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