Acute Stressors Reduce Neural Inhibition to Food Cues and Increase Eating Among Binge Eating Disorder Symptomatic Women
Noradrenergic systems have been shown to be disordered in depressive illness. The plasma norepinephrine response to a cold pressor test was used to investigate norepinephrine activity in subtypes of depressive illness. Patients with melancholic or psychotic depression, non-melancholic depression, general anxiety disorder and normal control subjects had a cold pressor test carried out under standard conditions. Blood samples were taken to measure plasma norepinephrine during the test. The plasma norepinephrine response to a cold pressor test was reduced in the melancholic/psychotic depressed patients compared to control subjects. No other intergroup comparisons were statistically significant. These results suggest noradrenergic systems are disturbed and subresponsive to stress in melancholic/psychotic depressed patients. This does not appear related to other clinical or biochemical factors.