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Lipoprotein Lipase Enzyme Activity Assay Validation and Clinical Assessment

University of Colorado Denver (CU Denver) logo

University of Colorado Denver (CU Denver)

Status

Completed

Conditions

Lipoprotein Lipase Deficiency

Treatments

Drug: Heparin

Study type

Observational

Funder types

Other

Identifiers

NCT02656095
UL1TR001082 (U.S. NIH Grant/Contract)
15-1412

Details and patient eligibility

About

This study plans to learn more about measuring Lipoprotein lipase (LPL) activity in humans. LPL is an enzyme in the breakdown of certain types of fats into smaller parts. Lipoprotein lipase deficiency (LPLD) is a very rare genetic disorder in which lipoprotein enzyme is no longer functional. This can cause conditions known as high triglycerides in the blood and inflammation of the pancreas.

Investigational medications to treat LPLD are currently being developed. In order to see if these medications are effective, it is necessary to be able to accurately measure LPL activity in humans.

LPL activity has been successfully measured in animal models after giving heparin. Heparin is a blood thinner which is approved by the FDA. It is originally used to prevent blood clots. This study will administer heparin to healthy adults through intravenous infusion (IV). Blood samples will be collected before and after the infusion to test LDL levels.

The purpose of this study is to develop a cheap, more reliable standard for assessment of LPLD in patients

Enrollment

12 patients

Sex

All

Ages

20 to 39 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  1. male and females between ages of 20-39

Exclusion criteria

  1. Past history of LPL deficiency

  2. Hypercholesterolemia (Cholesterol >200, LDL >160, HDL <35) hypertriglyceridemia (TG>150), any familial lipid disorder

  3. Diabetes mellitus (type 1 or 2)

  4. Uncontrolled hypertension SBP>140, DBP>90

  5. History of hemorrhagic stroke

  6. Current pregnancy

  7. History of major surgery, invasive procedure or trauma within the last 30 days, or planned major surgery within 30 days after participating in the study

  8. Exposure to heparin (unfractionated heparin or low molecular weight heparin) within 30 days prior to screening

  9. History of allergy to heparin

  10. History of heparin-induced thrombocytopenia

  11. Current smoking

  12. Active ulcerative or angiodysplastic GI diseases

  13. Thrombocytopenia or platelet disorders (Platelet count <100,000/UL)

  14. Major health issues which may affect the safety of study subject, including but not limited to:

    • History of chronic kidney disease (eGFR<60)
    • Long term use of medications which alter lipid metabolism
    • History of hepatic disease (ALT or AST more than 2 times the upper limit of normal)
    • History of clotting disorders, any type of coagulation factor deficiency, or thrombocytopenia
    • Chronic use of ASA, anticoagulants, platelet inhibitors
    • Use of NSAIDS for more than 2 weeks prior to screening
    • Anemia (hemoglobin <13 g/dL)

Trial contacts and locations

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Data sourced from clinicaltrials.gov

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