Sergio Guzmán

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LAGB is a technique increasingly used in the USA. The aim of this study is to analyze the 5-year outcome in terms of weight loss and complications. We reviewed our prospective electronic database for all patients undergoing LAGB between 2002 and 2007. We assessed weight progression, complications, and reoperations. We performed 199 cases during this period(More)
The application of laparoscopic gastric surgery has rapidly increased for the treatment of early gastric cancer. However, laparoscopic gastrectomy for advanced tumor remains controversial, particularly in terms of oncologic outcomes. This study was designed to compare 3-year survival of laparoscopic versus open curative gastrectomy in early and advanced(More)
OBJECTIVE To evaluate safety, weight loss, and cardiometabolic changes in obese subjects implanted with the duodenal-jejunal bypass liner (DJBL) for 1 year. BACKGROUND The DJBL is an endoscopic implant that mimics the duodenal-jejunal bypass component of the Roux-en-Y gastric bypass. Previous reports have shown significant weight loss and improvement in(More)
The efficacy of Roux-en-Y gastric bypass (RYGB) to control type 2 diabetes mellitus (T2DM) has been demonstrated in morbidly obese patients. Surgical procedures primarily focused on T2DM control in patients with body mass index (BMI) < 35 kg/m(2) have shown to effectively induce remission of T2DM. However, only few reports have evaluated the safety and(More)
P-glycoprotein is a multidrug transporter encoded by the mdr3 gene in the mouse intestinal epithelium. The aims of this study were to characterize the mdr3 gene expression in the cephalocaudal axis of the intestine in adult animals and during perinatal development, and to define the molecular mechanism responsible for the heterogeneous expression of the(More)
Loss of the peritoneal dialysis (PD) catheter is a major cause of PD technique failure and transfer to hemodialysis. In the present study, we report our experience with permanent peritoneal catheters. We prospectively analyzed 125 double-cuff coiled, swan-neck catheters implanted by the open surgical method in 120 patients from January 1996 to June 2003.(More)
BACKGROUND Surgical resection is the only treatment associated with long-term cure in patients with liver metastasis from colorectal cancer, achieving a 30% to 40% five years survival. AIM To evaluate the results of liver resection for metastatic colorectal cancer in our centre. PATIENTS AND METHODS Retrospective study. Epidemiological, perioperative(More)
The accuracy of endoscopy and directed biopsy in the differential diagnosis of gastric lesions was evaluated by comparing the diagnoses of one endoscopic procedure (endoscopy and multiple directed biopsies) with the definitive diagnoses in 333 patients. The overall endoscopic and bioptic accuracy rate for all patients amounted to 98.8%. Separate accuracy(More)
Plasma levels of pancreatic polypeptide were measured after a test meal and after infusion of graded doses of 99% pure cholecystokinin in 6 healthy volunteers. Initial attempts at sterilization of 99% pure cholecystokinin resulted in complete inactivation. Successful sterilization was accomplished by filtration by using specially treated silver-coated(More)