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Abstract
Abnormal growth hormone (GH) responses have been observed after several neuroendocrine challenge tests. In the present study, we examined the relationship between GH response after clonidine and insulin administration within the same subject to see if consistent response patterns were evident. Though there was a significant reduction in the mean GH response after clonidine (p=0.0002), similar differences were not observed after insulin (p=0.10). Furthermore, there were no apparent within-subject correlations for GH response between the clonidine and insulin challenge tests. Although the present findings indicate an inherent variability in GH response patterns after different neuroendocrine challenge tests, it appears from prior studies that GH may be more consistently blunted after clonidine in depression when compared to other GH provocative tests.
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Article info
Publication history
Received in revised form:
January 31,
1990
Received:
October 27,
1989
Footnotes
☆Supported in part by NIH Clinical Research Center Grant RR-00040, The Jack Warsaw Fund for Research in Biological Psychiatry, and NIMH Training Program in Neuropsychopharmacology Grant MH-14655.
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© 1990 Published by Elsevier Inc.
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