Diagnostic subgroups of affective disorders and their urinary excretion of catecholamine metabolities
Abstract
Previous reports have indicated that some depressed patients excrete less than normal quantities of 3-methoxy-4-hydroxyphenyl glycol (MHPG). The authors present data indicating that a subgroup of depressed patients who excrete less than normal quantities of MHPG may be identified by the application of explicit clinical criteria. They found no significant difference in the excretion of normetanephrine (NM), metanephrine (M), and 3-methoxy-4-hydroxymandelic acid (VMA) among any of the diagnostic subgroups or between each patient group and a healthy comparison group. However, depressed patients diagnosed as having primary affective disorder and bipolar illness excreted significantly less MHPG than did the healthy comparison group.
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