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1.
Nutr Metab Cardiovasc Dis ; 22(10): 843-8, 2012 Oct.
Article in English | MEDLINE | ID: mdl-21316934

ABSTRACT

BACKGROUND AND AIMS: Several studies have observed a hypocholesterolemic effect of plant sterols in hypercholesterolemic patients on a balanced diet. The aim of this study was to examine the effect of phytosterol supplementation on risk factors of coronary artery disease in metabolic syndrome patients on a Westernized type diet. METHODS AND RESULTS: In a randomized placebo-controlled design 108 patients with metabolic syndrome were assigned to consume either 2 plant sterol-enriched yogurt mini drink which provided 4 g phytosterols per day, or a yogurt beverage without phytosterols (control). The duration of the study was 2 months and the patients in both groups followed their habitual westernized type diet and recording it on food diaries. Blood samples were drawn at baseline and after 2 months of intervention. After 2 months supplementation with phytosterols, a significant reduction in total cholesterol, LDL-cholesterol, small and dense LDL (sdLDL) levels, as well as, apoB and triglycerides concentrations were observed in the intervention group (P < 0.05) compared to the control group. In addition, phytosterol supplementation lowered serum total cholesterol by 15.9%, LDL-cholesterol by 20.3% and triglyceride levels by 19.1% (P = 0.02, P < 0.001 and P < 0.001, respectively), although the patients kept their habitual westernized type diet. No differences were observed in HDL cholesterol, apoA1, glucose, C-reactive protein, fibrinogen levels and blood pressure. CONCLUSIONS: Phytosterol supplementation improves risk factors of coronary artery disease even if the diet is a westernized type.


Subject(s)
Anticholesteremic Agents/administration & dosage , Cholesterol, LDL/blood , Dietary Supplements , Metabolic Syndrome/physiopathology , Phytosterols/administration & dosage , Adult , Aged , Apolipoprotein A-I/blood , Arterial Pressure , Blood Pressure/drug effects , C-Reactive Protein , Cholesterol, HDL/blood , Coronary Artery Disease/complications , Coronary Artery Disease/physiopathology , Coronary Artery Disease/prevention & control , Diet , Diet Records , Energy Intake , Female , Fibrinogen/analysis , Humans , Male , Metabolic Syndrome/complications , Metabolic Syndrome/drug therapy , Middle Aged , Risk Factors , Single-Blind Method , Triglycerides/blood , Yogurt
2.
Diabetes Metab ; 36(6 Pt 1): 484-90, 2010 Dec.
Article in English | MEDLINE | ID: mdl-20888279

ABSTRACT

AIM: The role of animal-protein consumption on the prevalence of diabetes is not yet fully understood. For this reason, this study investigated the relationship between long-term animal-protein intake and diabetes in elderly individuals with no known cardiovascular disease. METHODS: During 2005-2007, 1190 men and women, aged 65-100 years, from Cyprus, Mitilini, Samothraki, Cephalonia, Crete, Lemnos, Corfu and Zakynthos were enrolled into the study. Diabetes was defined as fasting blood glucose ≥ 125 mg/dL or the use of antidiabetic medication. All participants were asked about their dietary habits through a semiquantitative food-frequency questionnaire. Assessment of protein and energy intakes was performed using food-composition tables. RESULTS: After adjusting for age, gender, obesity, history of hypertension, hypercholesterolaemia and dietary habits, a 5% increase in protein intake from meat and meat products was associated with a 34% (OR=1.338, 95% CI: 1.02-1.76) greater likelihood of diabetes, while a 5% increase in total protein intake was associated with a 29% (OR=1.288, 95% CI: 1.00-1.69) greater likelihood of diabetes. No significant associations between diabetes and protein intakes from vegetables and cereals were observed. CONCLUSION: Animal-protein consumption was associated with a higher prevalence of diabetes among the elderly, whereas protein intakes, especially from plant sources, within the recommended range appear to confer considerable protection. This suggests that reducing or controlling the burden of diabetes through dietary means in the elderly should include monitoring their daily protein intake.


Subject(s)
Diabetes Mellitus, Type 2/epidemiology , Dietary Proteins/adverse effects , Meat/adverse effects , Aged , Aged, 80 and over , Animals , Body Mass Index , Cross-Sectional Studies , Cyprus/epidemiology , Diabetes Mellitus, Type 2/blood , Diabetes Mellitus, Type 2/prevention & control , Diet , Female , Greece/epidemiology , Humans , Male , Mediterranean Islands/epidemiology , Prevalence , Risk Factors , Surveys and Questionnaires
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