First prospective clinical trial of reduced incision bariatric procedures using magnetic liver retraction.

Background: Exposure of the surgical field is an essential component of minimally invasive surgery. Liver retraction is an important element of bariatric procedures because visualization of the stomach and gastroesophageal junction is key. The magnetic surgical system provides a well-tolerated and effective option for adjustable liver retraction without the use of a dedicated port.

Changes in iron transporter divalent metal transporter 1 in proximal jejunum after gastric bypass.

Aim: To describe the variation that divalent metal transporter 1 (DMT1) shows in patients after Roux-en-Y gastric bypass (RYGB) surgery.

Methods: Prospective and analytical study of DMT1 level at the brush border of proximal jejunum in patients having undergone RYGB surgery. The mucosa of proximal jejunum forming the gastrojejunal anastomosis was biopsied during surgery and after 6 mo later with an endoscopic biopsy.

[Mortality of acute pancreatitis in a 20 years period].

Background: Mortality for acute pancreatitis (AP) in Chile has fluctuated between 7 ana 10% in last years.

Aim: To evaluate AP mortality over a period of 20 years in a clinical hospital in Santiago, Chile.

Material And Methods: Review of the database of hospital discharges with the diagnosis of acute pancreatitis, between 1990 and 2010 and the medical records of those patients.

Enhanced skeletal muscle lipid oxidative efficiency in insulin-resistant vs insulin-sensitive nondiabetic, nonobese humans.

Context: Skeletal muscle insulin resistance is proposed to result from impaired skeletal muscle lipid oxidative capacity. However, there is no evidence indicating that muscle lipid oxidative capacity is impaired in healthy otherwise insulin-resistant individuals.

Objective: The objective of the study was to assess muscle lipid oxidative capacity in young, nonobese, glucose-tolerant, insulin-resistant vs insulin-sensitive individuals.

Changes in ghrelin concentrations one year after resective and non-resective gastric bypass: associations with weight loss and energy and macronutrient intakes.

Objective: Ghrelin is a potent stimulator of appetite and synthesized in the stomach. Its role in weight loss after gastric bypass (GBP) is still controversial. The aim of this study was to evaluate the relation between weight loss and food intake and between weight loss and changes in serum ghrelin concentrations 1 y after GBP with resection of the bypassed stomach (R-GBP) and without resection (NR-GBP).

Pancreatic autotransplantation in chronic pancreatitis.

The apancreatic state secondary to resective surgery for chronic pancreatitis is associated with a high rate of late morbidity and mortality that is due, in part, to endocrine insufficiency. Resective procedures should, therefore, be used very selectively. Over the last 2 decades we have seen a shift from extensive distal resections to limited proximal resections.