[Morphometric study of somatostatin-producing "D" cells in duodenum and pancreas of the rat, following experimental antrectomy].

Given the inhibition of gastric secretion by the "D" cells producing somatostatin in antral mucosa, as well as evidence of disorders of the postprandial blood glucose after antrectomy, we may expect as a result of the antral resection a series of modifications in the content of the "D" cells in duodenum and pancreas. The study group was made up of 30 Sprague-Dawley albino rats, distributed in 3 groups as follows: Billroth I, Billroth II and laparotomy. The "D" cell study and the morphometric analysis after immunohistochemical avidin-biotin, was carried out with an automatic image analyzer and a morphometric calculation program.

Lower respiratory tract infections after abdominal operations: epidemiology and risk factors.

Objective: To find out the incidence and aetiology of lower respiratory tract infections after abdominal operations and identify predisposing factors.

Design: Prospective open study.

Setting: Department of General Surgery, Hospital Germans Trias i Pujol, Barcelona, Spain.

[The effect of duodenal exclusion on the cellular endocrine adaptation of the duodenum after performing an antrectomy. An experimental study in the rat].

We present an experimental study in rats with the aim to value the adaptative variations over the duodenal gastrin and somatostatin cell producing populations after antrectomy and gastrojejunostomy. 30 animals were distributed into two groups of 15 animals each. Group 1 rats underwent antrectomy and gastrojejunostomy, the animals of group 2 were considered as a controls.

[Adaptation mechanisms to the short intestine. Influence of the biliopancreatic factor: experimental study].

Massive small bowel resection that results in short bowel syndrome brings about regulatory mechanisms in the remaining intestine aimed at preventing the ensuing malabsorption. The purpose of the present study was to determine the role of pancreatic and biliary secretions in intestinal adaptation after small bowel resection. To do so, both pancreatic and biliary fluids were prevented from reaching the lumen of most of the small bowel.

[Adaptive duodenal endocrine cell changes after antrectomy. Experimental study in the rat].

The known gastric endocrine relationship between "G" cells and "D" cells is altered after the loss of antral "G" cell population after antrectomy, leading to physiologic adaptative changes over the cell population producing gastrin and somatostatin in the duodenum, replacing thus the endocrine function of the resected gastric antrum. In this experimental study, Sprague-Dawley rats have been randomized in two groups, Control and Antrectomy with gastroduodenostomy, maintaining the alimentary stimulation of the duodenum. Endocrine "G" and "D" cell studies have been carried out by immunohistochemical staining with an Avidin-Biotin affinity technique.