The Göttingen minipig as a model for postprandial hyperlipidaemia in man: experimental observations

Lab Anim. 2002 Oct;36(4):438-44. doi: 10.1258/002367702320389116.

Abstract

Postprandial hyperlipidaemia is believed to be atherogenic. This study aimed to establish a minipig model to investigate determinants of postprandial lipid metabolism. In a randomized cross-over design seven minipigs were subjected to six different feeding regimens: intragastric fat loads of 1, 2, and 4 g fat (Intralipid, 20%) kg(-1) in two fractions 1.5 h apart (1/3 first, 2/3 second), 2 g fat (Intralipid kg(-1) in one fraction, and 2 g olive oil kg(-1) in two fractions, all after pre-feeding with standard diet, and finally 2 g fat (Intralipid kg(-1) in two fractions without pre-feeding. Blood was sampled before and hourly for 7 h after gavaging, and plasma triglycerides were measured. Triglycerides increased significantly in all the feeding regimens (P < 0.001), except when olive oil was used as the fat source. A borderline significant dose-response effect of the Intralipid dose on the triglyceride response was observed. We found no significant differences in triglyceride response whether 2 g fat (Intralipid kg(-1) was given in one or two fractions, with or without pre-feeding. We conclude that postprandial hyperlipidaemia in minipigs can be induced by gavaging an emulgated lipid solution (1-4 g fat/kg, Intralipid, while olive oil is not applicable. There is no need to administer the fat fractionated or to withhold food prior to administration.

Publication types

  • Comparative Study

MeSH terms

  • Administration, Oral
  • Animals
  • Area Under Curve
  • Dietary Fats / administration & dosage
  • Dietary Fats / adverse effects
  • Disease Models, Animal*
  • Dose-Response Relationship, Drug
  • Fat Emulsions, Intravenous / administration & dosage
  • Fat Emulsions, Intravenous / adverse effects
  • Hyperlipidemias / blood*
  • Hyperlipidemias / etiology
  • Olive Oil
  • Plant Oils / administration & dosage
  • Plant Oils / adverse effects
  • Postprandial Period*
  • Swine
  • Swine, Miniature / physiology*
  • Time Factors
  • Triglycerides / blood

Substances

  • Dietary Fats
  • Fat Emulsions, Intravenous
  • Olive Oil
  • Plant Oils
  • Triglycerides