[Value of antral mucosectomy, selective proximal vagotomy and a combination of the 2 procedures in serum gastrin production and inhibition of stomach acid. An experimental study].
This experimental study was aimed at determining the volume and acidity produced by the normal stomach, following antral mucosectomy (MA), proximal selective vagotomy (VSP) and combination of both procedures. In 10 mongrel dogs, a double-lumen tube was placed in the stomach under general anesthesia. One of the lumen was rinsed with a constant flow and the other retrieved the gastric secretion. Gastric secretion and acidity were calculated every 10 minutes for 120 minutes. At 60 minutes, pentagastrin was injected. After these controls, a MA was carried out in half the animals and a VSP in the other half. 6 and 12 weeks postoperatively, the same controls were repeated. The dogs were then submitted to the operation of the other group. Following MA and pentagastrin stimulation, the gastric secretion (volume) is not modified with regard to the preoperative levels. On the other hand, after VSP, pentagastrin stimulation induces only a small volume response. The vagus thus seems to be involved in liquid secretion of the stomach. Following MA, pentagastrin stimulation lowers gastric pH at 6 weeks but not at 12 weeks postoperatively. Gastrin is known to have a trophic effect on the oxyntic mucosa. This effect disappears in a few weeks and explains these different figures. Following VSP, gastric acidity decreases and plasmatic gastrin increases. In this situation, pentagastrin directly acts on a trophic mucosa and produces the important lowering of the gastric pH. Finally, after MA, pentagastrin induces an increase in plasmatic gastrin. This effect seems to be mediated by central stimulation of the nuclei of the vagus nerve.
Merlini
M
M
Département de chirurgie, Hôpital, La Chaux-de-Fonds.
Mirkovitch
V
V
Winistörfer
B
B
Chapuis
G
G
D000818:Animals; D004285:Dogs; D005744:Gastric Acid / Q000378:metabolism*; D005745:Gastric Acidity Determination; D005753:Gastric Mucosa / Q000294:innervation / Q000601:surgery*; D005755:Gastrins / Q000097:blood*; D008297:Male; D011706:Pyloric Antrum / Q000294:innervation / Q000601:surgery; D014629:Vagotomy, Proximal Gastric; D014630:Vagus Nerve / Q000503:physiopathology
D005755:Gastrins
Valeur de la mucosectomie antrale, de la vagotomie sélective proximale et de la combinaison des deux procédés dans la production de gastrine sérique et l'inhibition de la production acide de l'estomac. Etude expérimentale.