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The Role of Lovaza? on Microvascular Function and Lipoprotein Profile in Type 2 Diabetes

This study is currently Recruiting

July 2011 By Eastern Virginia Medical School

First Recieved on June 17, 2009

Last Updated on July 8, 2011

Sponsor: Eastern Virginia Medical School
Collaborators: GlaxoSmithKline
Information provided by: Eastern Virginia Medical School
Identifier: NCT00931879

Purpose

The objective of this study is to determine the efficacy of 6 months of 4 g/day oral Lovaza? on endothelial-dependent and heat-induced vasodilation in type 2 diabetics with neuropathy and elevated triglyceride levels. Omega-3 fatty acids appear to exert beneficial effects on vascular function that are independent of the changes in serum triglycerides. The efficacy will be compared with a placebo given at the same duration. Efficacy of the drug will be evaluated after 3 and 6 months of treatment. This timeline should be adequate for evaluation of the primary neurophysiological endpoints. Previously, the investigators have demonstrated that it is feasible to pharmacologically alter nerve fiber density in as little as 18 weeks and that this correlates with subjective and objective measures of neurovascular function. The investigators are predicting an enhancement of post-ischemic hyperemia of the foot dorsum, where the dilative mechanism is primarily endothelium-dependent and a similar improvement in heat-induced hyperemia.

Study Type: Interventional
Study Design: Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment

Eligibility

Ages Eligible for Study:18 Years
Genders Eligible for Study:Both
Accepts Healthy Volunteers:No
Criteria

Inclusion Criteria: 1. Subjects may be males or non-pregnant, non-lactating females age 18-80 years. 2. Subjects must have been diagnosed with type 2 diabetes mellitus according to the current ADA criteria. 3. Triglyceride levels above 149 mg/dL 4. Minimum of 2 years after diagnosis of type 2 diabetes 5. Prior to participation in this study, each subject must sign an informed consent document. Exclusion Criteria: 1. Presence of type 1 diabetes mellitus (defined as C-peptide < 1 ng/ml or diabetes onset at < 35 years of age in a non-obese patient). 2. Presence of diabetic retinopathy that is more severe than "background" level. 3. Presence of diabetic nephropathy, defined by urine dipstick results greater than 300 mg/100 mL for protein (proteinuria). 4. Presence of clinically significant neuropathy that is clearly of non-diabetic origin, e.g. alcoholic or autoimmune. 5. Bilateral amputation of lower extremities or foot ulcers involving the great toes. Presence of neuroarthropathy (Charcot deformity) is allowable. 6. History of major macrovascular events such as myocardial infarction or stroke. 7. Participation in another clinical trial concurrently or within 30 days prior to entry into this study. 8. The use of ACE-inhibiting agents or angiotensin receptor blockade therapy (ARB) is allowed but must have been stable for at least 30 days prior to study entry and may not change during the course of the study. This is prudent due to their potential effects on blood flow. 9. Patients with moderate or severe hepatic insufficiency or abnormalities of liver function defined as any liver enzymes (AST, ALT, alkaline phosphatase) greater than 3 times the upper limit of normal. 10. Presence of pedal edema. 11. Presence or history of heart failure NYHA Class II or greater. 12. Other serious medical conditions that in the opinion of the investigator, would compromise the subject's participation in the study. 13. Concomitant use of medications known to exacerbate triglyceride levels, such as estrogens.

Investigators

  • Investigator: Aaron I Vinik, MD, PhD - Principal Investigator - Eastern Virginia Medical School
  • Investigator: Henri K Parson, PhD - Study Director - Eastern Virgina Medical School

Locations

  • Strelitz Diabetes Center

    Norfolk, Virginia 23510 United States

Conditions related to this trial:

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