Magnesium and Vascular Stiffness

NCT02235805 | Completed

• 1 other identifier: MEC 14-3-021
• Study Type: interventional
• Target: 52
• Locations: 1 country
• Sites: 1

Brief Summary

Observational epidemiologic studies have observed an inverse relationship between daily dietary magnesium intake and blood pressure (BP). Except for BP, magnesium may also beneficially affect other cardiovascular risk markers. Whether all these effects translate into improved vascular function is not known. Different vascular function markers at various stages on the pathway between diet and disease exist. One of these markers, vascular stiffness, is closely related to the process of atherosclerosis, an independent cardiovascular risk factor, and predictive of future cardiovascular events and mortality. To examine the integrated effects of interventions on cardiovascular risk, vascular stiffness may therefore serve as a marker at the later stage of cardiovascular disease development. Therefore, it is imperative to examine in a 24-week, randomized, double-blind, placebo-controlled, two-way parallel-group human intervention study, the effect of magnesium on vascular stiffness. Focus will be on carotid-femoral pulse wave velocity (PWV), the gold standard for the evaluation of vascular elasticity, to quantify vascular stiffness. Urinary excretion of magnesium will be used to assess dietary magnesium uptake. Furthermore, time courses of an increased magnesium intake on changes in BP, other markers reflecting vascular function, and plasma biomarkers related to low-grade inflammation and vascular activity will be measured to unravel possible cause-effect relationships.

Conditions

Metabolic Syndrome; Obesity

Keywords

Metabolic Syndrome; Obesity; Magnesium Supplementation; Vascular Stiffness; Vascular Function

Outcome Measures

Primary Outcomes (1)

• Vascular stiffness: effects of magnesium citrate supplementation

  Carotid-femoral pulse wave velocity (PWV)

  Baseline (0 weeks) and after medium-term (12 weeks) and long-term (24 weeks) magnesium citrate supplementation

Secondary Outcomes (3)

• Vascular function markers: effects of magnesium citrate supplementation

  Baseline (0 weeks) and after long-term (24 weeks) magnesium citrate supplementation

• Metabolic risk markers related to the metabolic syndrome: effects of magnesium citrate supplementation

  Baseline (0 weeks) and after medium-term (12 weeks) and long-term (24 weeks) magnesium citrate supplementation

• Blood pressure: effects of magnesium citrate supplementation

  Baseline (0 weeks) and after long-term (24 weeks) magnesium citrate supplementation

Other Outcomes (1)

• Dietary magnesium uptake

  Baseline (0 weeks) and after long-term (24 weeks) magnesium citrate supplementation

Study Arms (2)

Magnesium Citrate

EXPERIMENTAL

Dietary Supplement: Magnesium Citrate

Placebo

PLACEBO COMPARATOR

Dietary Supplement: Placebo

Interventions

Magnesium Citrate DIETARY_SUPPLEMENT

One capsule thrice daily that contains magnesium citrate (total daily dose: 350 mg elemental magnesium) at breakfast, lunch and dinner for 24 weeks

Magnesium Citrate

Placebo DIETARY_SUPPLEMENT

One capsule thrice daily that contains placebo at breakfast, lunch and dinner for 24 weeks

Placebo

Eligibility Criteria

• Age: 45 Years - 70 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Aged between 45-70 years
• Women postmenopausal: two or more years after last menstruation
• BMI between 25-35 kg/m2 (overweight and slightly obese)
• Plasma glucose \< 7.0 mmol/L
• Serum total cholesterol \< 8.0 mmol/L
• Serum triacylglycerol \< 4.5 mmol/L
• No current smoker
• No diabetic patients
• No familial hypercholesterolemia
• No abuse of drugs
• Less than 21 alcoholic consumptions per week
• Stable body weight (weight gain or loss \< 3 kg in the past three months)
• No use of proton pump inhibitors or medication known to treat blood pressure, serum lipid or glucose metabolism
• No use of dietary supplements or an investigational product within another biomedical within the previous 1-month
• No severe medical conditions that might interfere with the study, such as epilepsy, asthma, kidney failure or renal insufficiency, chronic obstructive pulmonary disease, inflammatory bowel diseases, auto inflammatory diseases and rheumatoid arthritis

You may not qualify if:

• High habitual dietary magnesium intake
• Plasma glucose ≥ 7.0 mmol/L
• Serum total cholesterol ≥ 8.0 mmol/L
• Serum triacylglycerol ≥ 4.5 mmol/L
• Current smoker, or smoking cessation \< 12 months
• Diabetic patients
• Familial hypercholesterolemia
• Abuse of drugs
• More than 21 alcoholic consumptions per week
• Unstable body weight (weight gain or loss \> 3 kg in the past three months)
• Use of proton pump inhibitors or medication known to treat blood pressure, serum lipid or glucose metabolism
• Use of dietary supplements or an investigational product within another biomedical within the previous 1-month
• Severe medical conditions that might interfere with the study, such as epilepsy, asthma, kidney failure or renal insufficiency, chronic obstructive pulmonary disease, inflammatory bowel diseases, auto inflammatory diseases and rheumatoid arthritis
• Active cardiovascular disease like congestive heart failure or cardiovascular event, such as an acute myocardial infarction or cerebro vascular accident
• Not willing to give up being a blood donor (or having donated blood) from 8 weeks before the start of the study and during the study

Sponsors & Collaborators

• Maastricht University Medical Center: lead
• Top Institute Food and Nutrition: collaborator

Study Sites (1)

Maastricht University Medical Center

Maastricht, Netherlands

Location

Related Publications (2)

• Schutten JC, Joris PJ, Minovic I, Post A, van Beek AP, de Borst MH, Mensink RP, Bakker SJL. Long-term magnesium supplementation improves glucocorticoid metabolism: A post-hoc analysis of an intervention trial. Clin Endocrinol (Oxf). 2021 Feb;94(2):150-157. doi: 10.1111/cen.14350. Epub 2020 Oct 26.

  PMID: 33030273 DERIVED

• Joris PJ, Plat J, Bakker SJ, Mensink RP. Long-term magnesium supplementation improves arterial stiffness in overweight and obese adults: results of a randomized, double-blind, placebo-controlled intervention trial. Am J Clin Nutr. 2016 May;103(5):1260-6. doi: 10.3945/ajcn.116.131466. Epub 2016 Apr 6.

  PMID: 27053384 DERIVED

MeSH Terms

Conditions

Metabolic Syndrome; Obesity

Interventions

magnesium citrate

Condition Hierarchy (Ancestors)

Insulin Resistance; Hyperinsulinism; Glucose Metabolism Disorders; Metabolic Diseases; Nutritional and Metabolic Diseases; Overweight; Overnutrition; Nutrition Disorders; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Ronald P Mensink, PhD

  Maastricht University Medical Center

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: September 8, 2014
• First Posted: September 10, 2014
• Study Start: September 1, 2014
• Primary Completion: September 1, 2015
• Study Completion: September 1, 2015
• Last Updated: September 15, 2015

Record last verified: 2015-09

Locations

NL (1)