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The study investigated cyclin D1 regulation by growth factors and calcium sensing receptor (CaSR) in human tumoral parathyroid cells. Basic fibroblast and epidermal growth factors increased cyclin D1 and phosphorylated extracellular signal-regulated kinases (pERK1/2) levels that were both efficiently inhibited by CaSR agonists. By contrast, in growth factors-free medium cyclin D1 levels were either...
Background: Neuroendocrine tumors of the gastroenteropancreatic (GEP) tract are encountered either as a sporadic type or as part of multiple endocrine neoplasia type 1 (MEN-1) syndrome. Inactivating MEN1 gene mutations have been found to be responsible for this syndrome and have also been described in sporadic cases. The aim of the present study was to evaluate the presence of mutations in the MEN1...
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