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Recent studies have shown that ghrelin exhibits gastroprotective effects. The aim of present study was to examine the influence of ghrelin administration on the healing of chronic gastric and duodenal ulcers and to evaluate the role of growth hormone (GH) and insulin-like growth factor-1 (IGF-1) in this process. In pituitary-intact or hypophysectomized rats, chronic gastric and duodenal ulcers were...
Melatonin (MT) is an ubiquitous molecule, representing one of the phylogenetically oldest signaling mechanisms. Our previous studies demonstrated that MT and its precursor L-tryptophan (L-Trp) show strong protective effect on gastric mucosa. The aim of the present study was: 1) to assess the effect of MT and L-Trp on healing of chronic gastric ulcer and accompanying changes in gastric mucosal blood...
Ghrelin, a nature ligand for the growth hormone secretagogue receptor (GHS-R), stimulates a release of growth hormone, prolactin and adrenocorticotropic hormone. Also, ghrelin increases food intake in adult rats and humans and exhibits gastroprotective effect against experimental ulcers induced by ethanol or stress. The aim of present study was to examine the influence of ghrelin administration on...
Previous studies have demonstrated that the gastric mucosa of diabetic rats is highly vulnerable to acute injury but the influence of nonsteroidal anti-inflammatory drugs (NSAID) and their new nitric oxide (NO) releasing derivatives of aspirin (NO-ASA) on the ulcer healing under diabetic conditions has been little studied. In this study streptozocin (STZ, 70 mg/kg injected intraperitoneally) was used...
Ghrelin, a circulating growth hormone-releasing peptide isolated from human and rat stomach, stimulates growth hormone secretion, food intake and exhibits gastroprotective properties. Ghrelin is predominantly produced by a population of endocrine cells in the gastric mucosa, but its presence in bowel, pancreas, pituitary and hypothalamus has been reported. In human fetal pancreas, ghrelin is expressed...
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