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Table 3 Cellular concentration of insulin receptor and IRS1.a

From: Short-Term Overeating Induces Insulin Resistance in Fat Cells in Lean Human Subjects

 

Diet, % of baseline

T2D, % of controls

Insulin receptor

57 ± 7, P = 0.001

55 ± 12, P = 0.035

IRS1

103 ± 21

98 ± 30

  1. aThe amounts of insulin receptor or IRS1 in adipocytes were compared at baseline and after 4 wks on the high-calorie diet. Samples from the same subjects were analyzed on the same gel by SDS-PAGE and immunoblotting. Results are expressed as percentage of the amount of protein at the start (baseline) of the high-energy diet, mean ± SE (n = 6). The amounts of insulin receptor or IRS1 were also compared in adipocytes from subjects with T2D (age 33–72 years, average 53 years; BMI 28–48 kg/m2, average 36 kg/m2 [n = 16]), with cells from nondiabetic controls (age 34–80 years, average 62 years; BMI 20–39 kg/m2, average 28 kg/m2 [n = 17]). Samples from subjects with and without T2D were analyzed on the same gels, by SDS-PAGE and immunoblotting. Results are expressed as a percentage of nondiabetic controls, mean ± SE. P, paired Student t test.