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Träfflista för sökning "L773:1873 1244 ;conttype:(refereed)"

Sökning: L773:1873 1244 > Refereegranskat

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  • Alshahawy, Rasha, et al. (författare)
  • Changes in plasma fatty acids and related biomarkers during transition to an exclusively plant- and fish-based diet in healthy adults
  • 2021
  • Ingår i: Nutrition (Burbank, Los Angeles County, Calif.). - : Elsevier. - 0899-9007 .- 1873-1244. ; 90
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: The aim of this study was to examine the time scale of plasma fatty acid changes during transition to an exclusively plant- and fish-based diet in healthy individuals and determine whether there are associated alterations in arachidonic acid (ARA)-derived inflammatory mediators, estimated stearoyl coenzyme A desaturase (SCD) activity, and blood pressure. Methods: In pursuit of a religious fast, 36 adults abstained from eating poultry, meat, dairy products, and eggs, while increasing fish intake for 6 wk. Participants were assessed 1 wk before (W0) and 1 (WI) and 6 (W6) weeks after the diet change. Results: By W6, fasting plasma long-chain omega-3 polyunsaturated fatty acids (omega-3 LC-PUFAs); docosahexaenoic (DHA) and eicosapentaenoic (EPA) had increased (+67% and +73%, respectively; P <= 0.001), with early rise of DHA (+22%), but not EPA at W1.The omega-3 index (sum of DHA and EPA as a percent of total fatty acids) increased from 2.1% to 3.4%. ARA decreased progressively (W1, -9%; W6, -16%; P < 0.001). ARA precursors gamma-linolenic and dihomo-gamma-linolenic acids also decreased, without changes in the ARA-derived mediators prostaglandin-E2 and leukotriene-B4. Myristic acid decreased at W1 (-37%) and W6 (-40%). There was no consistent change in SCD indices. At W6, systolic and diastolic blood pressure had declined by 8 and 5 mm Hg, respectively (P <= 0.013). Conclusions: Shifting to a plant- and fish-based diet produces rapid and sustained increases in omega-3 LC-PUFAs and decreases the omega-6 PUFA ARA and its precursors, consistent with a cardio-protective profile. The rapid response suggests that these biomarkers may be useful for assessment of diet interventions. 
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  • Axling, Ulrika, et al. (författare)
  • Metabolic effects of whole grain wheat and whole grain rye in the C57BL/6J mouse.
  • 2010
  • Ingår i: Nutrition. - : Elsevier BV. - 1873-1244 .- 0899-9007. ; 26, s. 230-239
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: A diet rich in whole grain cereals is suggested to protect against type 2 diabetes and facilitate body weight regulation. However, little is known about the impact of different cereals and the underlying mechanisms. The objective of this study was to compare the long-term metabolic effects of diets supplemented with whole grain wheat or whole grain rye in the C57BL/6J mouse. METHODS: Mice were fed the whole grain supplements in a low-fat background diet for 22 wk. Oral and intravenous glucose tolerance tests were performed during the study and in vitro insulin secretion assays were performed at the end of the study. Body weight, energy intake, body fat content, and plasma parameters were measured during the study. RESULTS: A dietary supplement of whole grain rye suppressed body weight gain and resulted in significantly decreased adiposity, plasma leptin, total plasma cholesterol, and triacylglycerols compared with a supplement of whole grain wheat. Also, a slight improvement in insulin sensitivity was observed in the rye group compared with the wheat group. The decreases in body weight and adiposity were observed in the absence of differences in energy intake. CONCLUSION: Long-term administration of whole grain rye evokes a different metabolic profile compared with whole grain wheat in the C57BL/6J mouse, the primary difference being that whole grain rye reduces body weight and adiposity compared with whole grain wheat. In addition, whole grain rye slightly improves insulin sensitivity and lowers total plasma cholesterol.
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  • Blomstrand, Eva, et al. (författare)
  • Influence of ingesting a solution of branched-chain amino acids on plasma and muscle concentrations of amino acids during prolonged submaximal exercise.
  • 1996
  • Ingår i: Nutrition (Burbank, Los Angeles County, Calif.). - 0899-9007 .- 1873-1244. ; 12:7-8, s. 485-90
  • Tidskriftsartikel (refereegranskat)abstract
    • On two occasions, seven male endurance-trained cyclists performed sustained exhaustive exercise with reduced muscle glycogen stores. During exercise, the subjects were supplied in random order with an aqueous solution of branched-chain amino acids (BCAA) or flavored water (placebo). Ingestion of BCAA caused the concentration of these amino acids to increase by 135% in the plasma and by 57% in muscle tissue during exercise, whereas in the placebo trial there was no change or a slight decrease in the concentration in plasma and a decrease of 18% in the muscle. The plasma concentration of alanine increased by 48% during exercise when BCAA were ingested, and the increase in the muscle concentration of alanine during exercise was larger (70% versus 31% in the placebo trial), suggesting an increased rate of alanine production. Also, the plasma concentration of arginine increased by 14% during exercise when BCAA were ingested, whereas there was no change during exercise in the placebo trial. There was a smaller decrease in the muscle glutamate concentration during exercise in the BCAA trial (32% versus 47% in the placebo trial; p < 0.05), but, for the remaining amino acids, there was no difference between the BCAA and placebo trials. There was a significant decrease in the muscle glycogen concentration during exercise in the placebo trial, whereas only a small decrease was found in the BCAA trial (28 and 9 mmol/kg wet wt [p < 0.05] in the placebo and BCAA trial, respectively). This might indicate that an increased supply of BCAA has a sparing effect on muscle glycogen degradation during exercise.
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  • Boccardi, Virginia, et al. (författare)
  • Consensus paper on the executive summary of the international conference on Mediterranean diet and health : a lifelong approach an Italian initiative supported by the Mediterranean Diet Foundation and the Menarini Foundation
  • 2018
  • Ingår i: Nutrition. - : Elsevier BV. - 0899-9007 .- 1873-1244. ; 51-52, s. 38-45
  • Tidskriftsartikel (refereegranskat)abstract
    • The Mediterranean Diet Foundation, in collaboration with the International Menarini Foundation, organized the International Conference on Mediterranean Diet and Health: A Lifelong Approach. The Conference was held in Ostuni (Puglia, Italy) from March 30 to April 1, 2017. The event received the endorsement of the American Federation for Aging Research, the Research Consortium Luigi Amaducci, the European Nutrition for Health Alliance, the European Union Geriatric Medicine Society, the Clinical Section of the International Association of Gerontology and Geriatrics European Region, the National Research Council Research Project on Aging, the Italian Society of Gerontology and Geriatrics, and the Italian Society of Clinical Nutrition and Metabolism.During the conference, results were presented from major studies on dietary interventions aiming to assess the efficacy of the Mediterranean diet in the prevention of chronic diseases and the potential underlying mechanisms. Twenty-six international speakers, in seven different sessions, discussed the biological basis, clinical impact, health policy, and behavioral implications of the Mediterranean diet, and its use in potential interventions for health promotion.
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  • Chen, Jie, et al. (författare)
  • Plasma phospholipid arachidonic acid in relation to non-alcoholic fatty liver disease : Mendelian randomization study
  • 2023
  • Ingår i: Nutrition (Burbank, Los Angeles County, Calif.). - : Elsevier. - 0899-9007 .- 1873-1244. ; 106
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: The role of plasma phospholipid arachidonic acid (AA) in the development of non-alcoholic fatty liver disease (NALFD), cirrhosis, and liver cancer remains unclear. This study aimed to determine the causality of the associations of plasma phospholipid AA with NALFD, cirrhosis, and liver cancer using Mendelian ran-domization analysis.Methods: Nine independent single-nucleotide polymorphisms associated with plasma phospholipid AA at the genome-wide significance were used as instrumental variables. Summary-level data for three outcomes were obtained from 1) a genome-wide association study for NAFLD, 2) the UK Biobank study, and 3) the Finn -Gen study. The sensitivity analysis excluding the pleiotropic variant rs174547 in the FADS1 gene was per-formed. Estimates from different sources were combined using the fixed-effects meta-analysis method.Results: Per standard deviation increase in AA levels, the combined odds ratio was 1.06 (95% confidence inter-val, 1.02-1.11; P = 0.008) for NAFLD, 1.05 (95% confidence interval, 1.01-1.09; P = 0.009) for cirrhosis, and 0.99 (95% confidence interval, 0.94-1.05; P = 0.765) for liver cancer. The associations remained stable in the sensitivity analysis excluding rs174547.Conclusions: This study suggests potential causal associations of high levels of plasma phospholipid AA with the risk of NAFLD and cirrhosis.
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