HDL from controls counteracted the inhibitory effect of ox-LDL on vasodilatation ( maximal relaxation [ Emax ] = 74.4 % 3.5 % vs 51.9 % 3.3 % , P = .0029 ) , whereas HDL from type 2 diabetic patients did not ( Emax = 51.7 % 5.8 % vs 52.3 % 4.6 % [ P = .66 ] and 52.7 % 5.5 % vs 51.9 % 4.5 % [ P = .78 ] for the rosiglitazone and pioglitazone group , respectively ) .