CHANGES IN PLASMA-INSULIN, ENTEROSTATIN, AND LIPOPROTEIN LEVELS DURING AN ENERGY-RESTRICTED DIETARY REGIMEN INCLUDING A NEW OAT-BASED LIQUID FOOD

The changes in plasma insulin, enterostatin, lipid, and glucose levels during weight reduction were studied in 32 subjects having a body mas s index of 25-35. The 31 subjects who completed the study followed for 23 weeks an energy-restricted dietary regimen which included a new oa t-based soup as the main meal once or twice daily. The intake of energ y decreased from 8.9 to 6.2 MJ/day from 0 to 22 weeks, the energy perc entage from fat decreased from 35 to 30%, and the intake of dietary fi ber increased from 21 to 25 g/10 MJ. The body weight decreased from 83 to 78 kg after 6 weeks and to 77 kg after 23 weeks. Plasma glucose ha d decreased significantly from 5.4 to 5.2 mmol/l, and plasma insulin f rom 122 to 98 pmol/l after 23 weeks. In contrast, the plasma enterosta tin concentration did not vary significantly over five sampling times, the mean values ranging from 25 to 30 nmol/l. Plasma cholesterol decl ined from 5.6 to 5.2 mmol/l, low-density lipoprotein cholesterol from 3.8 to 3.3, and plasma triglycerides from 1.5 to 1.3 mmol/l from 0 to 23 weeks. High-density lipoprotein cholesterol increased from 1.1 to 1 .3 mmol/l. It is concluded that an energy-restricted regimen leading t o lower plasma insulin, triglyceride, and low-density lipoprotein chol esterol levels did not significantly affect the plasma enterostatin co ncentration in overweight subjects. A new oat-based liquid food as a p art of the dietary regimen was well tolerated.