S Ikonomou

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Growth hormone (GH) secretion declines during normal aging along with reproductive activity in mammalian species. Various behavioral changes also occur in aged animals. In these experiments we have studied the effects of GH administration on behavioral and endocrine alterations exhibited by aged (18 months old) female rats of the Sprague-Dawley strain.(More)
The peptide xenin 25 is a gastric mucosal constituent like gastrin, somatostatin and pepsinogen. Gastrin and pepsinogen plasma concentrations increase when the secretion of gastric acid is reduced by proton pump inhibitors. In the present investigation, treatment with omeprazole led to an increase in fasting and postprandial plasma concentrations of xenin,(More)
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