The role of afferent sensory neurones in gastric mucosal protection is discussed. The principal effects of substance P and capsaicin on gastric motility and mucosal blood flow are taken in correlation with gastric mucosal injury. It seems likely that the protective effect of sensory neuropeptides is dependent on gastric mucosal blood flow and is mediated through the nitric oxide-generating syst...

UNLABELLED Previous studies have shown that pancreatic polypeptide (PP) inhibits exocrine pancreatic secretion. The aim of present study was to determine the influence of PP administration on gastric growth and blood flow. METHODS Study was performed on regularly fed, fasted or fasted and subsequently refed rats. Rats were treated with saline (intraperitoneally - i.p.), caerulein (0.24 nmol/k...

Stress reduces gastric blood flow and produces acute gastric mucosal lesions. We studied the role of angiotensin II in gastric blood flow and gastric ulceration during stress. Spontaneously hypertensive rats were pretreated for 14 days with the AT1 receptor antagonist candesartan before cold-restraint stress. AT1 receptors were localized in the endothelium of arteries in the gastric mucosa and ...

The effects of an intravenous infusion of nicotine at a dose of 2 . 5, 5 . 0, 7 . 5, or 10 . 0 micrograms kg-1h-1 on pentagastrin-stimulated gastric mucosal blood flow and acid secretion were investigated in eight healthy male non-smokers. Each dose was tested in two males. Gastric neutral red clearance served as a measure of mucosal blood flow. Nicotine reduced volume secretion, acid secretion...

Anastomotic leakage is considered as an independent risk factor for postoperative mortality after esophagectomy, and an insufficient blood flow in the reconstructed conduit may be a risk factor of anastomotic leakage. We investigated the clinical significance of blood flow visualization by indocyanine green (ICG) fluorescence in the gastric conduit as a means of predicting the leakage of esopha...

Recent results from our laboratory,'-3 as well as data reported by others,4' have shown that gastroduodenal blood flow functions not only provide 0210 and substrates, but also deliver HCO3 to the mucosa. This may be of particular relevance to the pathogenesis of stress ulceration. Sepsis and haemorrhagic shock are frequently associated with systemic acidosis and reduced arterial HCO3 concentrat...

BACKGROUND Previous studies have shown that administration of obestatin exhibits a protective effect in the pancreas, attenuating the development of acute pancreatitis. The aim of the present study was to investigate the influence of obestatin administration on the healing of chronic gastric ulcers. MATERIAL/METHODS Chronic gastric ulcers were induced in rats by 100% acetic acid applied to th...

The purpose of this study was to investigate the potential responses of the cardiovascular system and regional blood flow to hypoxic hypoxia (BB) and to carbon monoxide (CO)-induced hypoxia (COH). Ten anesthetized cats were studied under two nonnoxic (control: CONT) and two hypoxic conditions. Four types of radioactive micro spheres were used to measure regional blood flow during CONT an...