Intervention With Omega Fatty Acids in High-risk Patients
19 december 2016 bijgewerkt door: 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.
Studie Overzicht
Toestand
Voltooid
Conditie
Interventie / Behandeling
Studietype
Ingrijpend
Inschrijving (Werkelijk)
40
Fase
- Fase 2
Deelname Criteria
Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
30 jaar tot 70 jaar (Volwassen, Oudere volwassene)
Accepteert gezonde vrijwilligers
Ja
Geslachten die in aanmerking komen voor studie
Allemaal
Beschrijving
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
Studie plan
Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Preventie
- Toewijzing: Gerandomiseerd
- Interventioneel model: Crossover-opdracht
- Masker: Verdrievoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: Omega-3 fatty acid
Omega-3 fatty acids for 8 weeks, dosage are 3 and 4 g/day for women and men, respectively.
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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.
Andere namen:
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Experimenteel: Omega-6 fatty acid
Omega-6 fatty acids for 8 weeks, dosage are 20 and 27 g/day for women and men, respectively.
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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.
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Changes in lipid profile
Tijdsspanne: 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).
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Measured at baseline and after 8 weeks
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Changes in particle concentrations of lipoproteins of different sizes
Tijdsspanne: 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.
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Measured at baseline and week 8
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Changes in lipoprotein particle sizes
Tijdsspanne: 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.
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Measured at baseline and week 8
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Changes in body composition
Tijdsspanne: Measured at baseline and week 8
|
Body composition will be measured by bioelectrical impedance (InBody 720).
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Measured at baseline and week 8
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Changes in body weight
Tijdsspanne: Measured at baseline and week 8
|
Measured at baseline and week 8
|
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Changes in waist and hip circumference
Tijdsspanne: Measured at baseline and week 8
|
Measured at baseline and week 8
|
|
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Changes in circulating markers of inflammation, also including adipokines and kynurenine
Tijdsspanne: 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
|
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Changes in markers of inflammation in adipose tissue
Tijdsspanne: 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).
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Measured at baseline and week 8
|
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Changes in one carbon metabolites
Tijdsspanne: 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
|
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Changes in microbiota
Tijdsspanne: 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
Tijdsspanne: 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
|
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Changes in carnitine and metabolites
Tijdsspanne: 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
|
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Changes in gene expression in adipose tissue
Tijdsspanne: 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
Tijdsspanne: 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
|
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Changes in gene expression i whole blood
Tijdsspanne: Measured at baseline and week 8
|
Gene expression in full blood will be measured by quantitative PCR.
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Measured at baseline and week 8
|
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Changes in apolipoproteins
Tijdsspanne: Measured at baseline and week 8
|
Apolipoproteins A1, A2, B, C2, C3 and E will be measured in serum by a multiplex kit.
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Measured at baseline and week 8
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Medewerkers en onderzoekers
Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.
Sponsor
Onderzoekers
- Hoofdonderzoeker: Espen Rostrup, MD PhD, Haukeland University Hospital, Department of Heart Disease
Publicaties en nuttige links
De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.
Studie record data
Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.
Bestudeer belangrijke data
Studie start
1 maart 2015
Primaire voltooiing (Werkelijk)
1 april 2016
Studie voltooiing (Werkelijk)
1 april 2016
Studieregistratiedata
Eerst ingediend
9 september 2015
Eerst ingediend dat voldeed aan de QC-criteria
4 januari 2016
Eerst geplaatst (Schatting)
6 januari 2016
Updates van studierecords
Laatste update geplaatst (Schatting)
20 december 2016
Laatste update ingediend die voldeed aan QC-criteria
19 december 2016
Laatst geverifieerd
1 december 2016
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 2014/2336
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