Effects of lysyl oxidase inhibition on the protein levels of factors involved in the control of insulin sensitivity in epididymal adipose tissue from control and obese rats. Protein levels of (A) glucose transporter type 4 (GLUT4), (B) adiponectin (Adipo), (C) dipeptidylpeptidase 4 (DPP4) and (D) suppressor of cytokine signaling 3 (SOCS3) in epididymal adipose tissue from control rats fed a normal chow (CT) and rats fed a high-fat diet (HFD) that had been treated with vehicle or with the inhibitor of lysyl oxidase (LOX) activity (β-aminopropionitrile, BAPN, 100 mg/kg/day). Bars on graphs represent the mean±s.d. of six to eight animals, values were normalised to the expression of β-actin. *P<0.05, **P<0.01 vs control group. †P<0.05, ††P<0.01 vs HFD group. ‘C’, control; ‘B’, BAPN; ‘H’, HFD; ‘B/H’, HFD+BAPN.