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The Potential Role for Adenosine in the Haemodynamic Effects of Free Fatty Acids

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00184899
Recruitment Status : Completed
First Posted : September 16, 2005
Last Update Posted : March 1, 2007
ZonMw: The Netherlands Organisation for Health Research and Development
Information provided by:
Radboud University

Brief Summary:

The metabolic syndrome is associated with hyperdynamic circulation and sympathetic activation. Recently, Bakker et al. (Atherosclerosis 2002) described the hypothesis that free fatty acids are responsible for this association. The investigators hypothesize that in patients with obesity and the metabolic syndrome, an increased intracellular concentration of long-chain fatty acyl (LCFA)-CoA (the intracellular equivalent of free fatty acids) induces an increase in adenosine. Adenosine receptor stimulation, in turn, induces vasodilation and sympathetic activation.

The investigators aimed to assess this effect of free fatty acids on the adenosine system in healthy volunteers.

Condition or disease Intervention/treatment Phase
Obesity Metabolic Syndrome X Drug: Intravenous infusion of Intralipid/heparin Drug: Intravenous infusion of Glycerol/heparin Not Applicable

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Study Type : Interventional  (Clinical Trial)
Enrollment : 20 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single
Primary Purpose: Educational/Counseling/Training
Official Title: The Potential Role for Adenosine in the Haemodynamic Effects of Free Fatty Acids
Study Start Date : August 2005
Study Completion Date : August 2006

Resource links provided by the National Library of Medicine

Drug Information available for: Adenosine

Primary Outcome Measures :
  1. Forearm blood flow
  2. Vasoactive effect of caffeine
  3. Sympathetic activity (noradrenaline spillover, spectral analysis)

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy volunteers

Exclusion Criteria:

  • Pregnancy
  • Asthma
  • Use of medication
  • Cardiovascular/pulmonary disease and diabetes

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00184899

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Radboud University Nijmegen Medical Centre
Nijmegen, Netherlands, 6500HB
Sponsors and Collaborators
Radboud University
ZonMw: The Netherlands Organisation for Health Research and Development
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Principal Investigator: Paul Smits, MD, PhD Radboud University

Layout table for additonal information Identifier: NCT00184899    
Other Study ID Numbers: Intralipid-Ado
ZonMw Nr. 920-03-249
First Posted: September 16, 2005    Key Record Dates
Last Update Posted: March 1, 2007
Last Verified: February 2007
Keywords provided by Radboud University:
free fatty acids
sympathetic activity
Additional relevant MeSH terms:
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Metabolic Syndrome
Insulin Resistance
Glucose Metabolism Disorders
Metabolic Diseases
Calcium heparin
Soybean oil, phospholipid emulsion
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action
Sensory System Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Anti-Arrhythmia Agents
Vasodilator Agents
Purinergic P1 Receptor Agonists
Purinergic Agonists
Purinergic Agents
Neurotransmitter Agents
Fat Emulsions, Intravenous
Parenteral Nutrition Solutions
Pharmaceutical Solutions
Cryoprotective Agents
Protective Agents