Promotiecommissie Promotoren: Chapter 1 General Introduction: Improvement strategies for peptide receptor scintigraphy and radionuclide therapy. 7 Part I Neurotensin analogs for in vivo targeting of exocrine pancreatic cancer Chapter 2 Stabilised 111 In-labeled DTPA-and DOTA-conjugated neurotensin analogs for imaging and therapy of exocrine pancreatic cancer. 43 Chapter 3 Five stabilized 111 In...

Incubation of Swiss 3T3 cells with [2-3H]adenine, as in other cell types, reveals the ADP-ribosylation of GRP78 (the 78-kDa glucose-regulated protein, also known as BiP, the immunoglobulin heavy chain-binding protein), a resident endoplasmic reticulum protein that assists in the processing of proteins destined for secretion or cell surface expression. Here we show that Pasteurella multocida tox...

Quiescent Swiss 3T3 fibroblasts can be stimulated to reenter the cell cycle following stimulation with growth factors. Among these, bombesin is a potent mitogen for Swiss 3T3 cells and can act synergistically with insulin to stimulate DNA synthesis through protein kinase C-independent pathways. One of the earliest nuclear responses of quiescent cells treated with a combination of bombesin and i...

The pancreatic gland has an enormous potential for growth and regeneration, mainly in rodents. These processes remain mostly under the control of the GI hormone cholecystokinin (CCK). The human pancreas however does not show proliferative properties after partial pancreatectomy, but research in this field has been scarce. Recent studies indicate that CCK might not be the expected trophic agent ...

BACKGROUND The colon and rectum contain regulatory peptides in mucosal endocrine cells, which suggests a hormonal role. In animal studies colectomy leads to increased plasma levels of cholecystokinin. Little is known about the effects of proctocolectomy with ileal pouch-anal anastomosis on the release of cholecystokinin in human beings. Therefore we studied the effects of this procedure on fast...

Mucosal atrophy of the gastric antrum (type B atrophic gastritis) is generally accepted as predisposing to the development of the intestinal type of gastric cancer. Since bombesin stimulates gastrin release selectively from the antral mucosa, the response can be used as a marker for antral mucosal atrophy. In this study we have investigated bombesin-stimulated plasma gastrin responses in 21 pat...

G-protein coupled receptor (GPCR) agonists such as neuropeptides activate the insulin-like growth factor-1 receptor (IGF-IR) or the serine-threonine protein kinase Akt, suggesting that neuropeptides-GPCR signaling can cross-communicate with IGF-IR-Akt signaling pathways. Neutral endopeptidase 24.11 (NEP) is a cell-surface peptidase that cleaves and inactivates the neuropeptides endothelin-1 (ET...

In pancreatic acinar cells analysis of the propagation speed of secretagogue-evoked Ca2+ waves can be used to examine coupling of hormone receptors to intracellular signal cascades that cause activation of protein kinase C or production of arachidonic acid (AA). In the present study we have investigated the role of cytosolic phospholipase A2 (cPLA2) and AA in acetylcholine (ACh)- and bombesin-i...

Bombesin receptor subtype 3 (BRS-3), the orphan bombesin receptor, may play a role in the regulation of stress responses in lung and airway epithelia. Bombesin receptor activated protein (BRAP )is a novel protein we found in our previous study which interacts with BRS-3. This study was designed to observe the subcellular location and wound repair function of BRAP in human bronchial epithelial c...