GHRH and Hypoglycemia: Hypoglycemia up-regulated Ghrh-R mRNA profiles in male [SCR siRNA/INS (brown box-and-whisker plot) versus SCR siRNA/INS (green box-and-whisker plot)], but not female VMNdm Ghrh/SF-1 neurons; Ghrh-R siRNA pretreatment suppressed Ghrh-R transcript levels in hypoglycemic rats of each sex [Ghrh-R siRNA/INS (blue box-and-whisker plot) versus SCR siRNA/INS (brown box-and-whisker plot)].