We wish to use before and after treatment the classic tools of measure of insulinosensitivity / the euglycemic hyperinsulinemic clamp associated with a measure of the insulinosecretion thanks to a test of load in glucose IV. The coupling in the same procedure of these 2 tests is the Botnia clamp. We also wish to use the continuous measure of subcutaneous glucose during several days to estimate the reduction in the average glycemia on the fast and prandial periods as well as the decrease of the time spent in hyperglycemia during the day. This tool demonstrated its interest in type 2 diabetic population in several studies. Finally the current / spectro-IRM methods of imaging are now validated to quantify and measure exactly the importance of the steatosis, including in type 2 patients, because we know that it is probably the result of the insulino-resistance; We would also like to demonstrate that some genetic polymorphisms of proteins (polymorphisms G / T493 of the MTP, 1927 C/T of the receiver R1 of the adiponectin and 265 C/T of the gene of Apolipoprotéines A) are factors which can modulate the steatosis development in case of type 2 diabetes.