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Effects of Intralipid Versus Olive Oil Infusions on Endothelial Function, Immune Function, Inflammatory Markers

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ClinicalTrials.gov Identifier: NCT00989339
Recruitment Status : Withdrawn (Sub-investigator left facility prior to study initiation)
First Posted : October 5, 2009
Last Update Posted : July 4, 2014
Sponsor:
Collaborator:
Information provided by (Responsible Party):

Study Description
Brief Summary:

Recent evidence suggests that increased levels of a circulation fat (free fatty acids or FFAs) can cause high blood pressure and cardiac complications. Intralipid is the only type of fat approved by the FDA for clinical use. It is usually used as nutrition support in malnourished patients. The investigators' preliminary studies indicate that Intralipid results in a significant rise in blood pressure, blood vessel stiffness, and inflammation in obese subjects. Olive oil can also be used as nutrition support. The effect of olive oil intravenous (IV) on blood pressure and inflammation is not known. In this study, the investigators will compare the effect of Intralipid and olive oil on blood pressure, blood vessel stiffness and inflammation in healthy subjects. The investigators hypothesize that Olive oil emulsions will result in less vascular changes and less inflammatory response than Intralipid solutions. Accordingly, the investigators propose a systematic evaluation of the effects of Intralipid, olive oil and normal saline on blood pressure, endothelial function (vascular stiffness), inflammation in normal subjects.

A group of obese subjects will be admitted to the Clinical Research Center on 3 occasions. Subjects will receive repeated infusions of Intralipid, ClinOleic, and normal saline at 20 ml/hour for 24 hours.


Condition or disease Intervention/treatment Phase
Diabetes Hypertension Obesity Drug: Twenty-four Hour TPN and Saline Infusion Phase 2 Phase 3

Study Design

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 0 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Care Provider)
Primary Purpose: Treatment
Official Title: Effects of Intralipid and Olive Oil Infusion on Endothelial Function, Inflammatory Markers, Oxidative Stress, Immune Function, Autonomic Nervous System, Insulin Sensitivity and Carbohydrate Metabolism
Study Start Date : November 2009
Primary Completion Date : December 2011
Study Completion Date : December 2011
Arms and Interventions

Arm Intervention/treatment
Experimental: Twenty-four Hour TPN and Saline Infusion
Subjects will be admitted to the Grady research center on the evening before each study. The next morning, after an overnight fast, they will receive, in random order, Intralipid 20%, ClinOleic 20% or normal saline at 20 ml/hr for 24 hr. The interval between admissions will be 1 month.
Drug: Twenty-four Hour TPN and Saline Infusion
Infusion of Intralipid 20%, ClinOleic 20% or normal saline at 20 ml/hr for 24 hr.


Outcome Measures

Primary Outcome Measures :
  1. endothelial function [ Time Frame: 1 year ]

Secondary Outcome Measures :
  1. oxidative stress [ Time Frame: 1 year ]
  2. autonomic nervous system [ Time Frame: 1 year ]
  3. insulin sensitivity [ Time Frame: 1 year ]
  4. carbohydrate metabolism [ Time Frame: 1 year ]

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Healthy males or females
  • BMI 25 -35 kg/m2, between the ages of 18 and 65 years
  • BP < 140/80 mm Hg and no prior history of hypertension

Exclusion Criteria:

  • Pregnancy or breast feeding
  • History of diabetes, hypertension, fasting triglyceride levels > 250 mg/dL, liver disease (ALT 2.5x > upper limit of normal), serum creatinine ≥ 1.5 mg/dL, -Smokers or ex-smoker < 3 months of cessation, drug or alcohol abuse
  • Mental condition rendering the subject unable to understand the scope and possible consequences of the study
More Information

Responsible Party: Guillermo Umpierrez, Professor, Emory University
ClinicalTrials.gov Identifier: NCT00989339     History of Changes
Other Study ID Numbers: IRB00019153
First Posted: October 5, 2009    Key Record Dates
Last Update Posted: July 4, 2014
Last Verified: June 2014

Keywords provided by Guillermo Umpierrez, Emory University:
lipid emulsion
endothelial function
inflammatory markers
oxidative stress
insulin sensitivity
carbohydrate metabolism

Additional relevant MeSH terms:
Insulin Resistance
Hyperinsulinism
Glucose Metabolism Disorders
Metabolic Diseases
Insulin
Soybean oil, phospholipid emulsion
Hypoglycemic Agents
Physiological Effects of Drugs
Fat Emulsions, Intravenous
Parenteral Nutrition Solutions
Pharmaceutical Solutions