Intervention With Omega Fatty Acids in High-risk Patients
19 décembre 2016 mis à jour par: Haukeland University Hospital
Intervention With Omega Fatty Acids in High-risk Patients With Hypertriglyceridemic Waist
In order to reduce cardiovascular risk, current European guidelines recommend a diet low on saturated fatty acid through replacement with polyunsaturated fatty acids (PUFA).
Polyunsaturated fatty acids can be classified into omega-3 and omega-6.
However the results from recent meta-analyses investigating coronary risk outcomes did not clearly support a low intake of saturated fatty acids and a high intake of omega-3 or omega-6.
The aim of this study is to investigate the short term effects of a high intake of PUFAs on microvascular function, lipids, inflammation and other cardiovascular risk factors in inactive patients with increased waistline.
Aperçu de l'étude
Statut
Complété
Les conditions
Intervention / Traitement
Type d'étude
Interventionnel
Inscription (Réel)
40
Phase
- Phase 2
Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
30 ans à 70 ans (Adulte, Adulte plus âgé)
Accepte les volontaires sains
Oui
Sexes éligibles pour l'étude
Tout
La description
Inclusion Criteria:
- Waist circumference ≥ 94 cm in men and ≥ 80 cm in women
- Physical inactivity (< 2 h vigorous/active exercise training per week)
Exclusion Criteria:
- Regular use of certain prescription medications at baseline
- Severe psychiatric illness
- Pregnancy
- Pacemaker or implantable cardioverter defibrillator
- Cigarette smoking
- Previous coronary intervention
- Concomitant use of dietary supplements
- Use of omega-3 supplements at baseline
- Alcohol or drug abuse or any condition associated with poor compliance.
- Scheduled hospitalisation during the course of the study.
- Participation in a clinical trial in the last 12 weeks, or prior randomisation.
- Blood donation within the preceding 12 weeks.
- Diabetes Mellitus Type 1 or type 2
- Triglycerides > 5 mmol/l
- Previous bariatric surgery
- Malabsorption disorder
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: La prévention
- Répartition: Randomisé
- Modèle interventionnel: Affectation croisée
- Masquage: Tripler
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: Omega-3 fatty acid
Omega-3 fatty acids for 8 weeks, dosage are 3 and 4 g/day for women and men, respectively.
|
Experimental: Omega-3 fatty acid In the intervention period the participants will receive a daily supplement of omega-3 fatty acids for 8 weeks, where the dosage are 3 and 4 g/day for women and men, respectively.
The omega-3 supplement is a hydrolyzed and reesterified TAG fish oil, containing 33 area percent eicosapentaenoic acid and 22 area percent docosahexaenoic acid.
Autres noms:
|
|
Expérimental: Omega-6 fatty acid
Omega-6 fatty acids for 8 weeks, dosage are 20 and 27 g/day for women and men, respectively.
|
Experimental: Omega-6 fatty acid In the intervention period the participants will receive a daily supplement of omega-6 fatty acid for 8 weeks, where the dosage are 20 and 27 g/day for women and men, respectively.
The omega-6 supplement is a high-quality organic, cold pressed and filtered safflower oil, containing 68-83% linoleic acid, 5-15% saturated fatty acid, 8-21% oleic acid, 0,0-0,5% ALA and maximum 2% other fatty acids.
Autres noms:
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Changes in lipid profile
Délai: Measured at baseline and after 8 weeks
|
High-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), total cholesterol and triglycerides (TG) will be measured in plasma/serum (mmol/L).
|
Measured at baseline and after 8 weeks
|
|
Changes in particle concentrations of lipoproteins of different sizes
Délai: Measured at baseline and week 8
|
Particle concentration (nmol/L) of lipoprotein of different sizes will be calculated from the measured amplitude of their spectroscopically lipid methyl group NMR signals.
|
Measured at baseline and week 8
|
|
Changes in lipoprotein particle sizes
Délai: Measured at baseline and week 8
|
Lipoprotein particle size (nm) analysis will be performed by proton nuclear magnetic resonance (NMR) spectroscopy.
The size will be derived from the sum of diameter of each subclass multiplied by its relative mass percentage based on its methyl NMR signal.
|
Measured at baseline and week 8
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Changes in body composition
Délai: Measured at baseline and week 8
|
Body composition will be measured by bioelectrical impedance (InBody 720).
|
Measured at baseline and week 8
|
|
Changes in body weight
Délai: Measured at baseline and week 8
|
Measured at baseline and week 8
|
|
|
Changes in waist and hip circumference
Délai: Measured at baseline and week 8
|
Measured at baseline and week 8
|
|
|
Changes in circulating markers of inflammation, also including adipokines and kynurenine
Délai: Measured at baseline and week 8
|
Inflammatory markers and adipokines will be measured in serum/plasma, e.g tumor necrosis factor-α (TNF-α), interleukins, macrophage inflammatory protein 1-α (MIP-1-α) and granulocyte-macrophage colony stimulating factor (GM-CSF).
|
Measured at baseline and week 8
|
|
Changes in markers of inflammation in adipose tissue
Délai: Measured at baseline and week 8
|
Inflammatory markers like TNF-α, interleukins, GM-CSF and adiponectin in will be measured in adipose tissue (pg/mg tissue).
|
Measured at baseline and week 8
|
|
Changes in one carbon metabolites
Délai: Measured at baseline and week 8
|
Choline, betaine and related metabolites and B-vitamins involved in 1-carbon metabolism.
|
Measured at baseline and week 8
|
|
Changes in microbiota
Délai: Measured at baseline and week 8
|
Bacterial DNA in stool samples will be subjected to high-throughput barcode multiplex sequencing of the 16s ribosomal RNA gene (rRNA).
|
Measured at baseline and week 8
|
|
Changes in endothelial function
Délai: Measured at baseline and week 8
|
Vascular reactivity index (VRI) will be measured by monitoring fingertip temperature changes during a reactive hyperemia protocol.
|
Measured at baseline and week 8
|
|
Changes in carnitine and metabolites
Délai: Measured at baseline and week 8
|
Trimethylamine N-oxide (TMAO), carnitine, acylcarnitines and fatty acids will be measured in serum/plasma.
|
Measured at baseline and week 8
|
|
Changes in gene expression in adipose tissue
Délai: Measured at baseline and week 8
|
Gene expression in adipose tissue will be measured by microarray and quantitative PCR.
|
Measured at baseline and week 8
|
|
Changes in amino acids
Délai: Measured at baseline and week 8
|
Amino acids, methylated amino acids and metabolites will be measured in serum/plasma.
|
Measured at baseline and week 8
|
|
Changes in gene expression i whole blood
Délai: Measured at baseline and week 8
|
Gene expression in full blood will be measured by quantitative PCR.
|
Measured at baseline and week 8
|
|
Changes in apolipoproteins
Délai: Measured at baseline and week 8
|
Apolipoproteins A1, A2, B, C2, C3 and E will be measured in serum by a multiplex kit.
|
Measured at baseline and week 8
|
Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Parrainer
Les enquêteurs
- Chercheur principal: Espen Rostrup, MD PhD, Haukeland University Hospital, Department of Heart Disease
Publications et liens utiles
La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude
1 mars 2015
Achèvement primaire (Réel)
1 avril 2016
Achèvement de l'étude (Réel)
1 avril 2016
Dates d'inscription aux études
Première soumission
9 septembre 2015
Première soumission répondant aux critères de contrôle qualité
4 janvier 2016
Première publication (Estimation)
6 janvier 2016
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
20 décembre 2016
Dernière mise à jour soumise répondant aux critères de contrôle qualité
19 décembre 2016
Dernière vérification
1 décembre 2016
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 2014/2336
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .