T. T. Zittel

Learn More
Exogenous cholecystokinin (CCK) injected peripherally mimics effects of lipid entering the intestine on food intake and gastric motility via vagal afferents and induces c-fos expression in the locus ceruleus complex (LCC), nucleus of the solitary tract (NTS), area postrema (AP), and paraventricular nucleus (PVN). However, the role of peripheral endogenous(More)
Nutrients in the intestine inhibit food intake via an action on the vagal afferent pathway. The aim of the present study was to use immunochemical detection of Fos protein-like immunoreactivity (FLI) in the brainstem to trace the neuronal pathways activated by intestinal nutrients. Perfusion of the intestine of awake rats via an indwelling duodenal catheter(More)
C-fos protein expression was investigated in the nucleus of the solitary tract (NTS) in response to increasing cholecystokinin (CCK) doses and food intake in rats by counting the number of c-fos protein positive cells in the NTS. C-fos protein expression in the NTS dose-dependently increased in response to CCK, the lowest effective dose being 0.1 microg/kg.(More)
Brainstem neurones become activated following intestinal antigen challenge but the signalling mechanisms have not been resolved. Our aim was to determine the extent of brainstem activation after intestinal anaphylaxis induced by chicken egg albumin (EA). An increase in Fos-positive neurones in the nucleus tractus solitarius (nTS) was observed following EA(More)
CCK-A receptors and neurons of the nucleus of the solitary tract (NTS) are involved in the regulation of food intake, and in rats, there is evidence for involvement of an intestinal vagal afferent pathway. Studies investigating the role of CCK-A receptors in activation of NTS neurons using highly selective CCK-A receptor agonists and antagonists have(More)
In a model of abdominal surgery, which consisted of cecal manipulation and induces postoperative ileus in rats, we studied c-fos protein expression in the nucleus of the solitary tract (NTS), the spinal cord and dorsal root ganglia. Abdominal surgery resulted in a significantly higher number of c-fos protein immunoreactive cells in the NTS compared with(More)
The mammalian gallbladder is innervated by a well-developed intrinsic neural network. However, little is known about the neurochemistry and organization of the innervation of this organ in humans. The aim of this study was to analyze the distribution of immunoreactivity (IR) for the neuropeptides, vasoactive intestinal polypeptide (VIP), neuropeptide Y(More)
The purpose of the study was to determine the overall risk of a permanent stoma in patients with complicated perianal Crohn's disease, and to identify risk factors predicting stoma carriage. A total of 102 consecutive patients presented with the first manifestation of complicated perianal Crohn's disease in our outpatient department between 1992 and 1995.(More)
Carbohydrates are a component of chyme that initiate feedback control of gastric emptying. The aim of the study was to investigate the mechanism by which sensors in the intestine are activated by carbohydrate to initiate intestinal feedback of gastric motor function. Intestinal perfusion with D-glucose inhibited gastric motility in awake rats. This response(More)
Neurotrophin 3 (NT3) and its receptors are expressed throughout the gastrointestinal tract, especially in the enteric nervous system. However, little is known about the effects of NT3 on gastrointestinal motility. To investigate the effects of NT3 on gastric or colonic motility under baseline conditions, after subdiaphragmatic vagotomy and in a model of(More)