Pathogenesis GH is stimulated by gh-releasing hormone (GHRH) from the hypothalamus GH is stimulated by certain GH-releasing peptides ( grps) Somatostatin is secreted by the hypothalamus inhibits gh secretion• GH is stimulated by GH-releasing hormone (GHRH) from the hypothalamus • GH is stimulated by certain GH-releasing peptides (GHRPs) • Somatostatin is secreted by the hypothalamus inhibits GH secretion Pathogenesis