Abstract 171: Impact of the Mediterranean Diet on Apolipoprotein AI Kinetic in Men with Metabolic Syndrome

The impact of the Mediterranean diet (MedDiet) on HDL metabolism has not been extensively studied to date. The objective of the study was to investigate the effect of the MedDiet consumed under controlled isoenergetic feeding conditions on HDL as well as on apolipoprotein (apo) AI kinetic in men with metabolic syndrome (MetS). The diet of 26 men aged between 24 to 62 years with the MetS (NCEP-ATP III) was first standardized to a North American control diet, which was consumed for 5 weeks. MedDiet was then consumed over a subsequent period of 5 weeks. Both diets were consumed under isoenergetic feeding conditions with all foods, including red wine, provided to participants. During the last week of each diet, participants received a single bolus of [5,5,5- 2 H 3 ] L -leucine and fasting blood samples were collected at predetermined time points over a period of 96 hours. Kinetic parameters were derived using multicompartmental modeling of the enrichment data over time. Although no change in plasma HDL-C concentrations was observed, consumption of the MedDiet led to a significant reduction in plasma apoAI concentration and pool size (both P <0.05) compared with the control diet. The MedDiet was also associated with a trend towards a reduction in apoAI production rate (PR, P =0.07) but had no impact on apoAI fractional catabolic rate (FCR, P =0.64). However, only variations in apoAI FCR correlated with diet-induced variations in plasma HDL-C and in apoAI concentrations ( r = -0.50 and r = -0.49 respectively, P <0.02). Based on the individual HDL-C response to MedDiet, responders and non-responders were identified. Participants among whom HDL-C concentrations were increased with MedDiet (mean ΔHDL-C: +9.9 ± 3.2 %) showed significantly greater reductions in apoAI FCR and in apoB and VLDL-TG concentrations (all P <0.04) than those among whom HDL-C levels were reduced after the MedDiet (mean ΔHDL-C: -11.1 ± 4.5 %). Data from this controlled feeding study suggest that the heterogeneous response of HDL-C and apoAI to MedDiet is primarily determined by variations in apoAI FCR, which in turn may be due to concurrent changes in plasma TG concentrations.

Download Full-text

Effect of the Mediterranean diet with and without weight loss on surrogate markers of cholesterol homeostasis in men with the metabolic syndrome

British Journal Of Nutrition ◽

10.1017/s0007114511003436 ◽

2011 ◽

Vol 107 (5) ◽

pp. 705-711 ◽

Cited By ~ 43

Author(s):

Caroline Richard ◽

Patrick Couture ◽

Sophie Desroches ◽

Suzanne Benjannet ◽

Nabil G. Seidah ◽

...

Keyword(s):

Metabolic Syndrome ◽

Weight Loss ◽

Body Weight ◽

Control Diet ◽

Cholesterol Absorption ◽

Energy Restriction ◽

Surrogate Markers ◽

The Metabolic Syndrome ◽

The Mediterranean ◽

The Impact

The mechanisms implicated in the LDL-cholesterol (LDL-C)-lowering effects of the Mediterranean-type diet (MedDiet) are unknown. The present study assessed the impact of the MedDiet consumed under controlled feeding conditions, with and without weight loss, on surrogate markers of cholesterol absorption, synthesis and clearance using plasma phytosterols, lathosterol and proprotein convertase subtilisin/kexin-9 (PCSK9) concentrations, respectively, in men with the metabolic syndrome. The subjects' diet (n19, 24–62 years) was first standardised to a baseline North American control diet (5 weeks) followed by a MedDiet (5 weeks), both under weight-maintaining isoenergetic feeding conditions. The participants then underwent a 20-week free-living energy restriction period (10 (sd3) % reduction in body weight,P < 0·01), followed by the consumption of the MedDiet (5 weeks) under controlled isoenergetic feeding conditions. The LDL-C-lowering effect of the MedDiet in the absence of weight loss ( − 9·9 %) was accompanied by significant reductions in plasma PCSK9 concentrations ( − 11·7 %,P < 0·01) and in the phytosterol:cholesterol ratio ( − 9·7 %,P < 0·01) compared with the control diet. The addition of weight loss to the MedDiet had no further impact on plasma LDL-C concentrations and on these surrogate markers of LDL clearance and cholesterol absorption. The present results suggest that the MedDiet reduces plasma LDL-C concentrations primarily by increasing LDL clearance and reducing cholesterol absorption, with no synergistic effect of body weight loss in this process.

Download Full-text

Pilot Study on the Impact of the Mediterranean Diet and Intermittent Fasting

Case Medical Research ◽

10.31525/ct1-nct04185948 ◽

2019 ◽

Author(s):

Keyword(s):

Pilot Study ◽

Mediterranean Diet ◽

Intermittent Fasting ◽

The Mediterranean ◽

The Impact

Download Full-text

Association of the Chronotype Score with Circulating Trimethylamine N-Oxide (TMAO) Concentrations

Nutrients ◽

10.3390/nu13051671 ◽

2021 ◽

Vol 13 (5) ◽

pp. 1671

Author(s):

Luigi Barrea ◽

Giovanna Muscogiuri ◽

Gabriella Pugliese ◽

Chiara Graziadio ◽

Maria Maisto ◽

...

Keyword(s):

Mediterranean Diet ◽

Metabolic Profile ◽

Cardiometabolic Risk ◽

Linear Regression Analysis ◽

Biological Rhythms ◽

Unhealthy Lifestyle ◽

Gut Dysbiosis ◽

Study Population ◽

The Mediterranean ◽

The Individual

Individual differences in the chronotype, an attitude that best expresses the individual circadian preference in behavioral and biological rhythms, have been associated with cardiometabolic risk and gut dysbiosis. Up to now, there are no studies evaluating the association between chronotypes and circulating TMAO concentrations, a predictor of cardiometabolic risk and a useful marker of gut dysbiosis. In this study population (147 females and 100 males), subjects with the morning chronotype had the lowest BMI and waist circumference (p < 0.001), and a better metabolic profile compared to the other chronotypes. In addition, the morning chronotype had the highest adherence to the Mediterranean diet (p < 0.001) and the lowest circulating TMAO concentrations (p < 0.001). After adjusting for BMI and adherence to the Mediterranean diet, the correlation between circulating TMAO concentrations and chronotype score was still kept (r = −0.627, p < 0.001). Using a linear regression analysis, higher chronotype scores were mostly associated with lower circulating TMAO concentrations (β = −0.479, t = −12.08, and p < 0.001). Using a restricted cubic spline analysis, we found that a chronotype score ≥59 (p < 0.001, R2 = −0.824) demonstrated a more significant inverse linear relationship with circulating TMAO concentrations compared with knots <59 (neither chronotype) and <41 (evening chronotype). The current study reported the first evidence that higher circulating TMAO concentrations were associated with the evening chronotype that, in turn, is usually linked to an unhealthy lifestyle mostly characterized by low adherence to the MD.

Download Full-text

Impact of the Level of Adherence to Mediterranean Diet on the Parameters of Metabolic Syndrome: A Systematic Review and Meta-Analysis of Observational Studies

Nutrients ◽

10.3390/nu13051514 ◽

2021 ◽

Vol 13 (5) ◽

pp. 1514

Author(s):

Dimitra Rafailia Bakaloudi ◽

Lydia Chrysoula ◽

Evangelia Kotzakioulafi ◽

Xenophon Theodoridis ◽

Michail Chourdakis

Keyword(s):

Metabolic Syndrome ◽

Mediterranean Diet ◽

Observational Studies ◽

Positive Impact ◽

Fasting Blood Glucose ◽

Density Lipoprotein ◽

Hdl Cholesterol ◽

Central Registry ◽

High Adherence ◽

The Impact

High adherence to the Mediterranean diet (MD) has been associated with a lower prevalence of Metabolic Syndrome (MetS). The present study aimed to investigate the impact of MD adherence on parameters of MetS. A systematic literature search was performed in PubMed, Cochrane Central Registry of Clinical Trials (CENTRAL), Scopus, EMBASE, Web of Science and Google Scholar databases. Observational studies that recorded adherence to MD and components/measures of the MetS, such as waist circumference (WC), blood pressure (BP), fasting blood glucose (FBG), high-density lipoprotein (HDL) cholesterol and triglycerides (TG), were included in this study. A total of 58 studies were included in our study. WC and TG were significantly lower in the high adherence MD group (SMD: −0.20, (95%CI: −0.40, −0.01), SMD: −0.27 (95%CI: −0.27, −0.11), respectively), while HDL cholesterol was significantly higher in the same group (SMD: −0.28 (95%CI: 0.07, 0.50). There was no difference in FBG and SBP among the two groups (SMD: −0.21 (95%CI: −0.54, 0.12) & SMD: −0.15 (95%CI: −0.38, 0.07), respectively). MD may have a positive impact on all parameters of MetS. However, further research is needed in this field.

Download Full-text

Sex-Related Differences in the Effects of the Mediterranean Diet on Glucose and Insulin Homeostasis

Journal of Nutrition and Metabolism ◽

10.1155/2014/424130 ◽

2014 ◽

Vol 2014 ◽

pp. 1-9 ◽

Cited By ~ 6

Author(s):

Alexandra Bédard ◽

Louise Corneau ◽

Benoît Lamarche ◽

Sylvie Dodin ◽

Simone Lemieux

Keyword(s):

Sex Differences ◽

Insulin Sensitivity ◽

Mediterranean Diet ◽

Sex Difference ◽

Premenopausal Women ◽

Nonesterified Fatty Acids ◽

Time Interaction ◽

Insulin Homeostasis ◽

The Mediterranean ◽

The Impact

Objective. To document sex differences in the impact of the Mediterranean diet (MedDiet) on glucose/insulin homeostasis and to verify whether these sex-related effects were associated with changes in nonesterified fatty acids (NEFA).Methods. All foods were provided to 38 men and 32 premenopausal women (24–53 y) during 4 weeks. Variables were measured during a 180 min OGTT before and after the MedDiet.Results. A sex-by-time interaction for plasma insulin iAUC was found (men: −17.8%,P=0.02; women: +9.4%,P=0.63;Pfor sex-by-time interaction = 0.005). A sex-by-time interaction was also observed for insulin sensitivity (Cederholm index,P=0.03), for which only men experienced improvements (men: +8.1%,P=0.047; women: −5.9%,P=0.94). No sex difference was observed for glucose and C-peptide responses. Trends toward a decrease in NEFA AUC (P=0.06) and an increase in NEFA suppression rate (P=0.06) were noted, with no sex difference. Changes in NEFA were not associated with change in insulin sensitivity.Conclusions. Results suggest that the more favorable changes in glucose/insulin homeostasis observed in men compared to women in response to the MedDiet are not explained by sex differences in NEFA response. This clinical trial is registered with clinicaltrials.govNCT01293344.

Download Full-text

Self-Perceived Physical Activity and Adherence to the Mediterranean Diet in Healthy Adolescents during COVID-19: Findings from the DIMENU Pilot Study

Healthcare ◽

10.3390/healthcare9060622 ◽

2021 ◽

Vol 9 (6) ◽

pp. 622

Author(s):

Angelo Galluccio ◽

Giovanna Caparello ◽

Ennio Avolio ◽

Emanuele Manes ◽

Simona Ferraro ◽

...

Keyword(s):

Physical Activity ◽

Mediterranean Diet ◽

Eating Habits ◽

Wellness Programs ◽

Health Impact ◽

The Self ◽

Global Pandemic ◽

Mediterranean Diet Adherence ◽

The Mediterranean ◽

The Impact

The global pandemic coronavirus disease (COVID-19) resulted in restrictions which forced adolescents to stay at home and influenced their food habits and lifestyles with potential negative health impact. This study aims to investigate the self-reported physical activity (PA) and eating habits related to the consumption of Mediterranean foods in a sample of adolescents during the COVID-19 lockdown enrolled into the DIMENU study. A web survey was launched for 91 adolescents (aged 15–17 years) to assess their adherence to the Mediterranean Diet using the KIDMED test and lifestyle habits using a questionnaire designed following recommendations by Italian National Institute of Health (ISS score). Our results indicate that most of the sample declared no changes in eating habits and PA without sex differences. After dividing the sample into active and sedentary groups based on the self-perceived PA, we found that KIDMED and ISS scores were significantly higher (p = 0.0028 and p = 0.0001, respectively) in active adolescents. Moreover, KIDMED was positively correlated with ISS only in active adolescents (r = 0.311, p = 0.0185). In conclusion, our data underline the impact of the PA on the Mediterranean diet adherence in adolescents during the lockdown, suggesting the usefulness of promoting wellness programs directed towards inactive individuals to increase their awareness on the importance of healthy lifestyles.

Download Full-text