Early improvement of postprandial lipemia after bariatric surgery in obese type 2 diabetic patients.

BACKGROUND: Bariatric surgery (BS) is able to positively influence fasting lipid profile in obese type 2 diabetic patients (T2DM), but no data is available on the impact of BS on postprandial lipid metabolism neither on its relation with incretin hormones. We evaluated the short-term (2 weeks) effects of BS on fasting and postprandial lipid metabolism in obese T2DM patients and the contribution of changes in active GLP-1. METHODS: We studied 25 obese T2DM patients (age = 46 ± 8 years, BMI = 44 ± 7 kg/m2), of which 15 underwent sleeve gastrectomy and 10 underwent gastric bypass. Lipid and incretin hormone concentrations were evaluated for 3 h after ingestion of a liquid meal before and 2 weeks after BS. RESULTS: After BS, there was a significant reduction in body weight (p < 0.001), fasting plasma glucose (p < 0.001), fasting plasma insulin (p < 0.05), HOMA-IR (p < 0.001), and fasting plasma lipids (p < 0.05). The meal response of plasma triglycerides, total cholesterol, and HDL cholesterol was significantly lower compared to pre-intervention (p < 0.05, p < 0.001). In particular, the incremental area under the curve (IAUC) of plasma triglycerides decreased by 60% (p < 0.005). The meal-stimulated response of active GLP-1 increased, reaching a statistical significance (p < 0.001). CONCLUSIONS: BS leads to an early improvement of fasting and postprandial lipemia. The fall in fasting triglycerides is associated with an improvement of insulin resistance, while the reduction of postprandial lipemia is likely related to reduced intestinal lipid absorption consequent to bariatric surgery.

Clinical efficacy of laparoscopic sleeve gastrectomy vs laparoscopic gastric bypass in obese type 2 diabetic patients: a retrospective comparison.

BACKGROUND: Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) are performed in patients with obesity and type 2 diabetes mellitus (T2DM). The aim of this study is to evaluate retrospectively the clinical efficacy of RYGB and SG in two groups of obese T2DM patients. METHODS: From the hospital database, we extracted the clinical records of 31 obese T2DM patients, of whom 15 (7 F/8 M) had undergone laparoscopic SG (LSG) and 16 (7 F/9 M) laparoscopic RYGB (LRYGB) in the period 2005-2008. The groups were comparable for age (range 33-59 years) and BMI (range 38-57 kg/m(2)). LRYGB alimentary limb was 150 cm, and biliopancreatic limb was 150 cm from the Treitz ligament. LSG vertical transection was calibrated on a 40-Fr orogastric bougie. Data were analysed at 6, 12 and 18-24 months with reference to weight loss and remission of comorbidities. RESULTS: The reduction in body weight was comparable in the two groups. At 18-24 months the percent BMI reduction was 29 ± 8 and 33 ± 11 % in LSG and LRYGB, respectively. Percent excess weight loss was 53 ± 16 and 52 ± 19 % in LSG and LRYGB, respectively. Thirteen patients in LSG and 14 patients in LRYGB discontinued their hypoglycaemic medications. Five (55 %) patients in LSG and eight (89 %) in LRYGB discontinued antihypertensive drugs. Three out of five patients in LSG and one out of two patients in LRYGB withdrew lipid-lowering agents. CONCLUSIONS: LSG and LRYGB are equally effective in terms of weight loss and remission of obesity-related comorbidities. Controlled long-term comparisons are needed to establish the optimal procedure in relation to patients' characteristics.

Impact of sleeve gastrectomy on weight loss, glucose homeostasis, and comorbidities in severely obese type 2 diabetic subjects.

This study was undertaken to assess medium-term effects of laparoscopic sleeve gastrectomy (LSG) on body weight and glucose homeostasis in severely obese type 2 diabetic (T2DM) subjects. Twenty-five obese T2DM subjects (10 M/15 F, age 45 ± 9 years, BMI 48 ± 8 kg/m(2), M ± SD) underwent evaluation of anthropometric/clinical parameters and glucose homeostasis before, 3 and 9-15 months after LSG. Mean BMI decreased from 48 ± 8 kg/m(2) to 40 ± 9 kg/m(2) (P < .001) at 3 months and 34 ± 6 kg/m(2) (P < .001) at 9-15 months after surgery. Remission of T2DM (fasting plasma glucose < 126 mg/dL and HbA1c < 6.5% in the absence of hypoglycemic treatment) occurred in all patients but one. There was a remarkable reduction in the percentage of patients requiring antihypertensive and hypolipidemic drugs. Our study shows that LSG is effective in producing a significant and sustained weight loss and improving glucose homeostasis in severely obese T2DM patients.

Prostaglandin E1 versus lumbar sympathectomy in the treatment of peripheral arterial occlusive disease: randomised study of 86 patients.

BACKGROUND AND AIM: The aim of this study was to compare the effects of a pharmacological and a surgical vasodilatatory therapy in the treatment of chronic arterial diseases of the lower limbs. METHODS AND RESULTS: After giving their informed consent, 40 patients were randomised to receive a slow (approximately 2-hour) infusion of 40 microg of prostaglandin E1 twice daily for 28 days (group A), and 46 were randomised to undergo lumbar sympathectomy, including the second and third ganglion. Twenty-four (60%) of the patients in group A experienced complete remission, seven (17.5%) were partial responders, and nine (22.5%) failed to respond. Of the 46 patients in group B, 29 (63%) experienced complete remission, seven (15.2%) were partial responders, and 10 (21.7%) failed to respond. CONCLUSIONS: Broadly similar results were obtained with the two types of treatment, both of which are indicated mainly in Fontaine stages IIB and III (non-advanced), particularly when revascularising therapy is impossible or excessively risky. The two strategies can be advantageously combined with direct revascularisation surgery and may therefore constitute a first-line approach favouring subsequent therapy.