Effect of structured lipids as energy substrate after hepatectomy in rats with streptozocin-induced diabetes.
The suitability of energy substrates for use by the remnant liver after 70% hepatectomy was studied in relation to the hepatic energy status in diabetic rats. Rats with streptozocin-induced diabetes underwent 70% hepatectomy and were divided into five groups receiving total parenteral nutrition (TPN) for 24 h. One group received standard TPN without fat, and four groups respectively received standard TPN with long-chain triglycerides (LCTs), medium-chain triglycerides (MCTs), mixed triglycerides (MIX), or structured lipids (SLs) as a 10% lipid emulsion. The latter groups received 60% of nonprotein calories per day with fat emulsion (LCT, MCT, MIX, or SL), and the remaining 40% with glucose. The group that received 100% of nonprotein calories per day with glucose was defined as the TPN group. All rats in the TPN group died from nonketotic hyperosmolarity within 24 h. The blood ketone body ratio (acetoacetate/beta-hydroxybutyrate), the energy charge level of the remnant liver, and the cumulative excretion of 14CO2 in expired breath during 6 h after [14C]glucose administration were all significantly higher in the SL group than in the other groups 24 h after hepatectomy. These findings suggest that SL may be a superior energy substrate to other triglyceride preparations during the immediate posthepatectomy phase in diabetic patients.
Mitsuyoshi
K
K
Department of Surgery, Kansai Medical University, Moriguchi, Osaka, Japan.
Hiramatsu
Y
Y
Nakagawa
M
M
Yamamura
M
M
Hioki
K
K
Yamamoto
M
M
D000818:Animals; D001786:Blood Glucose / Q000032:analysis; D003921:Diabetes Mellitus, Experimental / Q000378:metabolism*; D004734:Energy Metabolism; D005217:Fat Emulsions, Intravenous / Q000378:metabolism*; D005947:Glucose / Q000008:administration & dosage / Q000378:metabolism; D006498:Hepatectomy / Q000009:adverse effects*; D007328:Insulin / Q000097:blood; D007657:Ketone Bodies / Q000097:blood; D008099:Liver / Q000378:metabolism*; D008112:Liver Glycogen / Q000032:analysis; D008297:Male; D009994:Osmolar Concentration; D010289:Parenteral Nutrition, Total; D051381:Rats; D011919:Rats, Inbred Strains; D014280:Triglycerides / Q000378:metabolism
D001786:Blood Glucose; D005217:Fat Emulsions, Intravenous; D007328:Insulin; D007657:Ketone Bodies; D008112:Liver Glycogen; D014280:Triglycerides; D005947:Glucose