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Isolation and characterization of a nuclear depressive syndrome

Published online by Cambridge University Press:  09 July 2009

W. M. Grove ,
N. C. Andreasen ,
M. Young ,
J. Endicott ,
M. B. Keller ,
R. M. A. Hirschfeld  and
T. Reich
W. M. Grove*
Affiliation:
Department of Psychiatry, University of Minnesota, University of Iowa, Rush-Presbyterian-St Luke's Medical Center, Chicago, Department of Research and Training, New YorkState Psychiatric Institute, Lindemann Mental Health Center, Harvard University, BostonCenter for Affective Disorders, National Institute of Mental Health, Rockville and the Department of Psychiatry, Jewish Hospital, St Louis, USA
N. C. Andreasen
Affiliation:
Department of Psychiatry, University of Minnesota, University of Iowa, Rush-Presbyterian-St Luke's Medical Center, Chicago, Department of Research and Training, New YorkState Psychiatric Institute, Lindemann Mental Health Center, Harvard University, BostonCenter for Affective Disorders, National Institute of Mental Health, Rockville and the Department of Psychiatry, Jewish Hospital, St Louis, USA
M. Young
Affiliation:
Department of Psychiatry, University of Minnesota, University of Iowa, Rush-Presbyterian-St Luke's Medical Center, Chicago, Department of Research and Training, New YorkState Psychiatric Institute, Lindemann Mental Health Center, Harvard University, BostonCenter for Affective Disorders, National Institute of Mental Health, Rockville and the Department of Psychiatry, Jewish Hospital, St Louis, USA
J. Endicott
Affiliation:
Department of Psychiatry, University of Minnesota, University of Iowa, Rush-Presbyterian-St Luke's Medical Center, Chicago, Department of Research and Training, New YorkState Psychiatric Institute, Lindemann Mental Health Center, Harvard University, BostonCenter for Affective Disorders, National Institute of Mental Health, Rockville and the Department of Psychiatry, Jewish Hospital, St Louis, USA
M. B. Keller
Affiliation:
Department of Psychiatry, University of Minnesota, University of Iowa, Rush-Presbyterian-St Luke's Medical Center, Chicago, Department of Research and Training, New YorkState Psychiatric Institute, Lindemann Mental Health Center, Harvard University, BostonCenter for Affective Disorders, National Institute of Mental Health, Rockville and the Department of Psychiatry, Jewish Hospital, St Louis, USA
R. M. A. Hirschfeld
Affiliation:
Department of Psychiatry, University of Minnesota, University of Iowa, Rush-Presbyterian-St Luke's Medical Center, Chicago, Department of Research and Training, New YorkState Psychiatric Institute, Lindemann Mental Health Center, Harvard University, BostonCenter for Affective Disorders, National Institute of Mental Health, Rockville and the Department of Psychiatry, Jewish Hospital, St Louis, USA
T. Reich
Affiliation:
Department of Psychiatry, University of Minnesota, University of Iowa, Rush-Presbyterian-St Luke's Medical Center, Chicago, Department of Research and Training, New YorkState Psychiatric Institute, Lindemann Mental Health Center, Harvard University, BostonCenter for Affective Disorders, National Institute of Mental Health, Rockville and the Department of Psychiatry, Jewish Hospital, St Louis, USA
*
1Address for correspondence: Dr W. M. Grove, Department of Psychiatry, University of Minnesota, Box 393 Mayo, Minneapolis MN55455. USA
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Synopsis

We investigated the nosology of endogenous depression by numerical taxonomy. Five hundred and sixty-nine patients diagnosed as having unipolar major depressive disorder in the NIMH Clinical Research Branch Program on the Psychobiology of Depression – Clnical were studied. Thirty-six symptoms which might distinguish endogenous from non-endogenous depressions were chosen from the literature. Patients' symptom profiles assessed by structured interview were grouped by two methods: a K-means improvement of Ward's method of cluster analysis, and a latent class algorithm. The methods produced very similar groups and several internal validity criteria suggested that the groups were not spurious. Cluster 1, ‘nuclear depression,’ included a nucleus of patients common to multiple definitions of endogenous depression. The non-nuclear group scored as less neurotic than the nuclear group on personality tests administered during the index episode. The groups do not differ in frequency, number or severity of reported life events prior to onset of the index episode. The nuclear group shows a poor prognosis on two-year prospective follow-up, greater disturbance on personality inventories, and increased heritability of depression in siblings.

Type
Research Article
Information
Psychological Medicine , Volume 17 , Issue 2 , May 1987 , pp. 471 - 484
Copyright
Copyright © Cambridge University Press 1987

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