TABLE 2

Characterization of membrane fractions from skeletal muscle

FractionsDietInsulinProtein recoveries (μg/g muscle)5′-nucleotidase (nmol · mg–1 · min–1)
PMRodent Chow30 ± 5557 ± 57
Rodent Chow+30 ± 5546 ± 74
High-Fat38 ± 5417 ± 138
High-Fat+31 ± 4355 ± 77
T-tubulesRodent Chow234 ± 2490 ± 7
Rodent Chow+279 ± 1272 ± 8
High-Fat258 ± 1059 ± 14
High-Fat+265 ± 2452 ± 14
Rodent Chow95 ± 21ND
IMRodent Chow+99 ± 27ND
High-Fat136 ± 19ND
High-Fat+219 ± 45ND
  • Values are means ± SE. PM, plasma membranes; IM, Intracellular membranes; ND, nondetectable.