OBJECTIVETo evaluate the effect of sleeve gastrectomy with ileal interposition duodenojejunal bypass operation on lipid metabolism in non-obese type 2 diabetes mellitus patients.

METHODSTwenty-nine non-obese patients with type 2 diabetes mellitus underwent sleeve gastrectomy with ileal interposition duodenojejunal bypass operation. All the patients were subjected to the measurement of total cholesterol (TC), triglycerides (TG), high density lipoprotein (HDL), low density lipoprotein (LDL), homeostatic model assessment for insulin resistance (Homa-IR), glycosylated hemoglobin (HbA1c) at postoperative 12th month.

RESULTSTwelve months after ileal interposition duodenojejunal bypass operation, the blood glucose was controlled without taking hypoglycemic drugs in 28 patients (96.5%) and HbA1c decreased from (8.4±1.3)% to (6.5±1.6)% (P<0.01). Dyslipidemia were corrected in 25 cases (86.2%). TC became normal in 84.2% (15/19), and TG became normal in 82.3% (14/17). HDL became normal in 66.6% (8/12). LDL became normal in 31.2% (5/16). TC/HDL ratio decreased from 5.6±1.2 to 2.8±1.0 (P<0.01). TG/HDL ratio decreased from 3.2±1.3 to 1.5±0.8 (all P<0.01).

CONCLUSIONSleeve gastrectomy with ileal interposition duodenojejunal bypass is an effective operation for the correction of dyslipidemia in non-obese patients with type 2 diabetes mellitus.