| 1. |
- Costabile, Giuseppina, et al.
(författare)
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Effects on cardiovascular risk factors of a low- vs high-glycemic index Mediterranean diet in high cardiometabolic risk individuals: the MEDGI-Carb study
- 2024
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Ingår i: European Journal of Clinical Nutrition. - 0954-3007 .- 1476-5640. ; In Press
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Tidskriftsartikel (refereegranskat)abstract
- Background : The role of dietary Glycemic Index (GI), independently of fiber intake, in modulating cardiovascular disease (CVD) risk among non-diabetic individuals has not been fully elucidated. Objective : To evaluate the effects of a low- versus a high-GI diet, based on a Mediterranean dietary pattern, on cardiometabolic risk factors in individuals at high CVD risk, participating in the MEDGI-Carb intervention study. Subjects and methods : 160 individuals, aged 30–69 years, BMI 25–37 kg/m2, with a waist circumference >102 cm (males) or >88 cm (females) and one feature of the metabolic syndrome, participated in a multi-national (Italy, Sweden, USA) randomized controlled parallel group trial. Participants were assigned to a low GI (< 55) or high-GI MedDiet (> 70) for 12 weeks. The diets were isoenergetic and similar for available carbohydrate (270 g/d) and fiber (35 g/d) content. Fasting metabolic parameters were evaluated in the whole cohort, while an 8-h triglyceride profile (after standard breakfast and lunch) was evaluated only in the Italian cohort. Results : Blood pressure and most fasting metabolic parameters improved at the end of the dietary intervention (time effect, p < 0.05 for all); however, no differences were observed between the low- and the high-GI MedDiet groups (time x group effect; p > 0.05 for all). Conversely, the low-GI diet, compared with high-GI diet, significantly reduced the 8-h triglyceride profile (p < 0.017, time*group effect) that was measured only in the Italian cohort. However, it induced a reduction of plasma triglycerides after lunch (tAUC) that was of only borderline statistically significance (p = 0.065). Conclusions : Consuming a low-GI in comparison with a high-GI MedDiet does not differentially affect the major cardiometabolic risk factors at fasting in individuals at increased cardiometabolic risk. Conversely, it could reduce postprandial plasma triglycerides. Clinical trial registry number: NCT03410719, (https://clinicaltrials.gov).
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| 2. |
- Eriksen, Anne Kirstine, et al.
(författare)
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Prediagnostic enterolactone concentrations and mortality among Danish men diagnosed with prostate cancer
- 2017
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 71:10, s. 1235-1240
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND/OBJECTIVES: Evidence on the role of diet in relation to prostate cancer progression is sparse. Foods rich in lignans have shown beneficial effects on prostate cancer progression in both animal studies and small human intervention studies, including beneficial effects on prostate-specific antigen levels and tumour growth. The lignan metabolite, enterolactone, has further shown to slow prostate cancer cell growth in vitro. The aim was to investigate the association between prediagnostic enterolactone concentrations and mortality among men with prostate cancer. SSUBLJECTS/METHODS: Prediagnostic plasma concentrations of enterolactone from 1390 men diagnosed with prostate cancer from the Danish Diet, Cancer and Health cohort were related to all-cause or prostate cancer-specific death, using Cox proportional hazards models with follow-up time (from the date of diagnose until the date of death, emigration or end of follow-up by December 2013) as the underlying time axis. RESULTS: The hazard ratios for enterolactone concentrations assessed linearly by 20 nmol/l increments was 0.95 (0.90, 1.02) for all-cause mortality and 0.98 (0.92, 1.05) for prostate cancer-specific mortality. Categorisation of enterolactone concentrations into quartiles did not reveal a different pattern. No effect modifications by smoking, body mass index or sport were observed, and the associations did not differ by prostate cancer aggressiveness. CONCLUSIONS: We found no association between enterolactone concentrations and mortality among men diagnosed with prostate cancer.
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| 3. |
- Kyrø, Cecilie, et al.
(författare)
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Dietary intake of whole grains and plasma alkylresorcinol concentrations in relation to changes in anthropometry: the Danish diet, cancer and health cohort study
- 2017
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 71, s. 944-952
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND/OBJECTIVES: Whole grain intake has been associated with a small but significant lower body weight gain in observational studies, but there is limited knowledge about the associations with specific whole grain types. The objective was to investigate the association between whole grains, different sources of whole grains and biomarkers of whole grain intake (alkylresorcinols) in relation to subsequent changes in waist circumference (WC) and body weight.SUBJECTS/METHODS: Cohort study of 57 053 participants with baseline information on whole grain intake from questionnaires (FFQ) and biomarkers of whole grain rye and wheat intake, plasma alkylresorcinols, for a subset. WC and body weight were measured at baseline and again at follow-up. The associations were estimated using multiple linear regression analyses and logistic regression.RESULTS: For women, overall whole grain intake was not related to changes in WC or body weight. For men, total whole grain intake was associated with gains in WC (Delta WC per 25 g increment: 0.44 cm, 95% CI: 0.34 cm; 0.54 cm) and body weight (Delta weight per 25 g increment: 150 g, 95% CI: 78 g; 222 g), but the results changed to null or changed direction when adjusting for baseline anthropometry. For the different sources of whole grains, rye (women) and crispbread was significantly associated with gains in WC and body weight. Plasma alkylresorcinol concentration was associated with reduced WC, but not body weight, for women (Delta WC per 50 nmol/l increment: -0.69 cm, 95% CI: -1.26 cm; -0.13 cm), but no association was found for men.CONCLUSIONS: Overall, no strong relationship between whole grain intake, measured from questionnaires or using biomarkers was found in relation to changes in body weight and WC.
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| 4. |
- Landberg, Rikard, et al.
(författare)
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Determinants of plasma alkylresorcinol concentration in Danish post-menopausal women
- 2011
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 65, s. 94-101
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Alkylresorcinols (AR), a group of phenolic lipids present in the outer parts of wheat and rye grain kernels, have been suggested as biomarkers of whole-grain wheat and rye intake. In this study, we investigated potential determinants of plasma AR concentration in a free-living population. SUBJECTS/METHODS: Non-fasting samples from post-menopausal women enrolled in the Danish Diet, Cancer and Health study (n = 360) were selected. Diet was assessed using a semi-quantitative food frequency questionnaires (FFQ) and the association between food items likely to contain AR and relevant non-dietary factors were studied by analysis of covariance models. RESULTS: The median AR concentration was 78 nmol/l (interquartile range = 106.9 nmol/l). Intake of rye bread, identified as the main determinant, was associated with 87% higher plasma total AR concentration per 100 g of bread (95% confidence interval = 46-139%). About 8-12% of the total variation (depending on the AR homologue) in plasma AR concentration was explained by the selected dietary variables. At a nutrient level, total dietary fiber and cereal fiber were significantly associated with plasma total AR concentration (P = 0.05), but only ≈2% of the total plasma AR concentration was explained by the dietary fiber or cereal fiber intake. CONCLUSIONS: In the studied population, AR plasma concentration was mainly affected by rye bread intake among investigated determinants
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| 5. |
- Landberg, Rikard, et al.
(författare)
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Long-term reproducibility of plasma alkylresorcinols as biomarkers of whole-grain wheat and rye intake within Northern Sweden Health and Disease Study Cohort
- 2013
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 67:3, s. 259-263
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND/OJBECTIVES: Alkylresorcinols (AR) have been suggested as specific biomarkers of whole-grain (WG) and bran intake from wheat and rye. Before using plasma AR as biomarkers in prospective cohort studies, the long-term reproducibility needs to be determined in order to judge how well a single plasma sample reflects the long-term concentration. The objective was therefore to estimate the reproducibility of plasma AR concentrations over 0.1-3.9 years. SUBJECTS/METHODS:The concentrations of AR homologues were analysed in plasma samples, drawn >8 h since last meal, 0.1-3.9 years apart (mean similar to 2 years) in 74 participants in the Swedish prospective Vasterbotten Intervention Project cohort. Reproducibility was estimated by calculating the intra class correlation coefficient (ICC). RESULTS: Fasting plasma AR concentrations were similar between the first and second measurements. The ICC for total AR was 0.54 (95% confidence interval (CI) = 0.38-0.69] overall, 0.34 (95% CI = 0.13-0.64) for men and 0.73 (95% CI = 0.56-0.85) for women, respectively. Somewhat higher ICCs were obtained for shorter AR homologues. CONCLUSION: In summary, the reproducibility of plasma AR over 0.1-3.9 years was high for women and moderate for men within this population. Together with previous data showing high validity of plasma AR as biomarkers of wheat and rye in different populations, the current finding suggest that this biomarker is stable over a long-time period and is therefore probably useful for assessment of long-term WG intake in populations with a wide intake range and a frequent intake.
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| 6. |
- Landberg, Rikard, 1981, et al.
(författare)
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New alkylresorcinol metabolites in spot urine as biomarkers of whole grain wheat and rye intake in a Swedish middle-aged population
- 2018
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 72:10, s. 1439-1446
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Tidskriftsartikel (refereegranskat)abstract
- Background/objectives: Studies on the health effects of whole grains typically use self-reported intakes which are prone to large measurement errors. Dietary biomarkers that can provide an objective measure of intake are needed. New alkylresorcinol (AR) metabolites (3,5-dihydroxycinnamic acid (DHCA), 2-(3,5-dihydroxybenzamido)acetic acid (DHBA-glycine) and 5-(3,5-dihydroxyphenyl) pentanoic acid (DHPPTA)) in 24 h urine samples have been suggested as biomarkers for whole grain (WG) wheat and rye intake but remain to be evaluated in spot urine samples. Subjects/methods: The reproducibility of the new AR metabolites (DHCA, DHBA-glycine and DHPPTA) was investigated in 4 repeated samples over a period of 2 wk in spot urine from 40 Swedish men and women enroled in the SCAPIS-study, after adjustment of creatinine. Metabolite concentrations were correlated with total whole grain intake estimated during the same period. Results: The medium-term reproducibility determined for DHCA, DHPPTA and DHBA-glycine varied from moderate to excellent (intra-class correlation coefficient = 0.35–0.67). Moreover, DHCA and DHBA-glycine were independently associated with self-reported total WG intake (β = 0.18, P = 0.08 and β = 0.18, P = 0.02, respectively) and all metabolites except for DHPPA were higher among women. Conclusions: This study supports the idea of using AR metabolites in one or several spot urine samples as biomarkers of whole grain intake. These findings need to be confirmed in different populations.
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| 7. |
- Landberg, Rikard, et al.
(författare)
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Reliability of fasting plasma alkylresorcinol concentrations measured 4 months apart
- 2010
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 64, s. 698-703
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Tidskriftsartikel (refereegranskat)abstract
- Background/Objectives: Alkylresorcinols (ARs) have been suggested as specific dietary biomarkers of whole-grain intake. Evaluation of long-term reliability in repeatedly collected samples in population-based studies is needed to assess whether plasma AR reflect long-term exposure and may be used to study exposure-disease relationships in large-scale epidemiologic studies. The objective of this study was to analyze the reliability (reproducibility) of AR concentrations in fasting plasma measured 4 months apart.Subjects/Methods:AR concentrations (C17:0, C19:0, C21:0, C23:0 and C25:0 and total ARs) were measured in fasting plasma samples from 100 participants from the European Prospective Investigation into Cancer and Nutrition (EPIC)-Potsdam Study with an interval of 4 months between blood sampling.Results:Fasting plasma AR concentrations were not significantly different between the first and second measurement over the 4-month period. Geometric means of total AR concentrations were 48.8 (95% confidence interval (CI) 41.5-57.3) nmol/l at the first and 48.7 (95% CI 41.4-57.4) nmol/l at the second measurement (P = 0.99). The intraclass correlation coefficients for total AR concentrations were 0.42 (95% CI = 0.25-0.57) for all, 0.55 (95% CI 0.32-0.72) for women, and 0.17 (95% CI = -0.11-0.42) for men. Comparable results were obtained for the individual homologues.Conclusions:Overall, we observed moderate reliability in concentration of total AR and individual homologues over time, although reliability was weaker in men than in women. These findings should be taken into account when using AR as blood biomarkers for whole-grain intake in large-scale epidemiologic studies. European Journal of Clinical Nutrition (2010) 64, 698-703; doi:10.1038/ejcn.2010.71; published online 26 May 2010
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| 8. |
- Landberg, Rikard, et al.
(författare)
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Reliability of fasting plasma alkylresorcinol metabolites concentrations measured 4 months apart
- 2012
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 66, s. 968-970
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Tidskriftsartikel (refereegranskat)abstract
- Alkylresorcinols (AR) have been suggested as specific dietary biomarkers of whole-grain wheat and rye intake. AR are metabolised to 3,5-dihydroxybenzoic acid (DHBA) and 3-(3,5-dihydroxyphenyl)-1-propanoic acid (DHPPA), which have longer apparent half-lives and were recently proposed to better reflect long-term whole-grain consumption than the intact AR. The objective of this study was to analyse the reliability-expressed by the intraclass correlation coefficient (ICC)-of AR metabolite concentrations among 100 participants from the European Prospective Investigation into Cancer and Nutrition (EPIC)-Potsdam study who provided two fasting plasma samples 4 months apart. DHBA and DHPPA concentrations were not significantly different between the first and second measurement over the 4-month period (P > 0.05). The ICC was 0.32 (95% confidence interval (CI) = 0.13-0.49) for DHBA and 0.37 (95%CI = 0.19-0.53) for DHPPA. These results suggest that AR metabolites cannot be considered to be better biomarkers of whole-grain wheat and rye intake than the intact AR in fasting plasma (ICC = 0.42).
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| 9. |
- Magnusdottir, O. K., et al.
(författare)
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Plasma alkylresorcinols C17:0/C21:0 ratio, a biomarker of relative whole-grain rye intake, is associated to insulin sensitivity : a randomized study
- 2014
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 68:4, s. 453-458
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND/OBJECTIVES: Few studies have used biomarkers of whole-grain intake to study its relation to glucose metabolism. We aimed to investigate the association between plasma alkylresorcinols (AR), a biomarker of whole-grain rye and wheat intake, and glucose metabolism in individuals with metabolic syndrome (MetS). SUBJECTS/METHODS: Participants were 30-65 years of age, with body mass index 27-40 kg/m(2) and had MetS without diabetes. Individuals were recruited through six centers in the Nordic countries and randomized to a healthy Nordic diet (ND, n=96), rich in whole-grain rye and wheat, or a control diet (n=70), for 18-24 weeks. In addition, associations between total plasma AR concentration and C17:0/C21:0 homolog ratio as an indication of the relative whole-grain rye intake, and glucose metabolism measures from oral glucose tolerance tests were investigated in pooled (ND + control) regression analyses at 18/24 weeks. RESULTS: ND did not improve glucose metabolism compared with control diet, but the AR C17:0/C21:0 ratio was inversely associated with fasting insulin concentrations (P=0.002) and positively associated with the insulin sensitivity indices Matsuda ISI (P=0.026) and disposition index (P=0.022) in pooled analyses at 18/24 weeks, even after adjustment for confounders. The AR C17:0/C21:0 ratio was not significantly associated with insulin secretion indices. Total plasma AR concentration was not related to fasting plasma glucose or fasting insulin at 18/24 weeks. CONCLUSIONS: The AR C17:0/C21:0 ratio, an indicator of relative whole-grain rye intake, is associated with increased insulin sensitivity in a population with MetS.
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| 10. |
- Omar, Nor Adila Mhd, et al.
(författare)
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Long-term whole-grain rye and wheat consumption and their associations with selected biomarkers of inflammation, endothelial function, and cardiovascular disease
- 2021
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 75:1, s. 123-132
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Tidskriftsartikel (refereegranskat)abstract
- Background/objectives Whole-grain (WG) intake has been associated with a lowered risk of developing type 2 diabetes, cardiovascular disease, and some cancers in epidemiological studies. Reduced subclinical inflammation could be one important mechanism behind such associations. This study investigated whether high long-term WG rye and wheat intakes were associated with lower concentrations of biomarkers of inflammation, endothelial function, and protein biomarkers associated with cardiovascular disease. Subjects/methods We assessed WG intake by food frequency questionnaire (FFQ) and by measuring alkylresorcinols (ARs) in plasma and adipose tissue, respectively. Selected biomarkers in free-living 109 women and 149 men were analyzed from two clinical subcohort studies (Swedish Mammography Cohort-Clinical (SMC-C) and Cohort of Swedish Men-Clinical (COSM-C), respectively. Total WG rye and wheat (WGRnW) and the ratio of WG rye to WG rye and wheat (WGR/WGRnW) were estimated from FFQs. ARs were measured in plasma and adipose tissue by gas chromatography-mass spectrometry (GC-MS) and the biomarkers by ELISA. Results We found no consistent associations between WG intake assessed by different methods and the selected biomarkers. However, WGRnW intake was inversely associated with cathepsin S (P-trend < 0.05) and total AR and C17:0/C21:0 in plasma were inversely associated with the endostatin concentration (P-trend < 0.05) adjusted for BMI, age, and sex. Conclusion The results give limited support to the hypothesis that a high WG wheat and rye intake is associated with lower concentrations of common biomarkers of inflammation and CVD that have previously been reported inversely associated with WG intake or an overall healthy lifestyle.
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