Insulin-dependent glucose utilization in intensively milk-fed veal calves is modulated by supplemental lactose in an age-dependent manner

Details

Serval ID
serval:BIB_2693F6836481
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Insulin-dependent glucose utilization in intensively milk-fed veal calves is modulated by supplemental lactose in an age-dependent manner
Journal
Journal of Nutrition
Author(s)
Hugi  D., Tappy  L., Sauerwein  H., Bruckmaier  R. M., Blum  J. W.
ISSN
0022-3166 (Print)
Publication state
Published
Issued date
06/1998
Volume
128
Number
6
Pages
1023-30
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Jun
Abstract
Postprandial insulin resistance with excessive hyperinsulinemia, hyperglycemia and glucosuria develops with increasing age in veal calves intensively fed milk replacers. We tested the age dependency of insulin resistance, modulated by high lactose intake, glucose oxidation and insulin receptor number and affinity after an overnight period without food. Male calves were fed a milk replacer containing 290 or 423 g lactose and 310 and 541 g total sugar/kg from 69-195 kg body weight. At mean body weights of 95 and 170 kg, insulin-dependent glucose metabolism was studied in euglycemic-hyperinsulinemic glucose clamps (EGC), and glucose-dependent insulin responses were tested in hyperglycemic clamps (HGC). EGC were combined with infusions of [13C6]glucose to measure glucose kinetics and glucose oxidation by determination of 13CO2 exhalation. During EGC and HGC, insulin concentrations were similar in both groups, indicating comparable insulin secretion and metabolic clearance rates. On the basis of glucose infusion rates required to maintain eu- or hyperglycemia in EGC and HGC, respectively, insulin-dependent glucose utilization was not age dependent. However, in calves receiving a high lactose intake, insulin-dependent glucose utilization was enhanced in the early phases, but was reduced in the late stages of the growth trial. Insulin-dependent glucose utilization behaved inversely with atom % excess of [13C6]glucose, but changed in a manner similar to that of the rate of glucose appearance. Inhibition of endogenous glucose output, exhalation of 13CO2 and amounts of oxidized glucose exhibited no group differences. More glucose was therefore stored in lactose-supplemented calves. A reduced insulin receptor number in skeletal muscle in calves fed high amounts of lactose likely contributed to low insulin-dependent glucose utilization.
Keywords
Aging/*metabolism Animals Body Weight/physiology Cattle/growth & development *Diet Eating/physiology Glucose/*metabolism Glucose Clamp Technique Hyperglycemia/blood Hyperinsulinism/blood Insulin/*physiology Lactose/*pharmacology Male *Milk
Pubmed
Web of science
Create date
24/01/2008 13:36
Last modification date
20/08/2019 13:05
Usage data