Effects of recurrent postnatal stresses on hypothalamic concentrations of norepinephrine

The effect of recurrent postnatal stress on the norepinephrine content of hypothalamus has been studied. Repeated exposure to hunger or to stimulation of the lateral nucleus of the hypothalamus served as stress-producing process. Regardless of their nature, recurrent stresses increased the norepinephrine content of the hypothalamus. The differences between controls and stressed animals were statistically significant.