Hyperlipidemia Clinical Trial
Official title:
Regulation of Intestinal and Hepatic Lipoprotein Production by Glucose and Fructose
Increased postprandial plasma triglycerides are associated with increased cardiovascular risk. Chronic consumption of carbohydrates is associated with increased levels of triglycerides. Very few studies have assessed the effect of acute consumption of carbohydrates on plasma triglycerides and lipoprotein production and clearance. The present study aims to assess the effects of acute administration of glucose and fructose on hepatic and intestinal lipoprotein production.
Each subject will be studied twice 4-6 weeks apart in random order in this single blinded study. A nasoduodenal tube will be sited under fluoroscopic guidance the day prior to the study.In study A they will receive intraduodenal intralipid (20% at 60 ml/hour) alongside 60 ml/hour of 20% dextrose or fructose for 15 hours starting at 4am. In study B they will receive 60 ml/hour of intraduodenal intralipid with 60ml/hour of normal saline for 15 hours from 4am. A pancreatic clamp (octreotide with replacement glucose, insulin, glucagon and growth hormone) will be started at 7am. From 9am an iv bolus of deuterated-glycerol (d5-glycerol) along with a regular infusion of deuterated leucine (L-[5,5,5-2H3]. Regular blood samples will be drawn to assess lipoprotein kinetics. ;
Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Single Blind (Subject), Primary Purpose: Basic Science
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