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  • Title: Simultaneous use of thyrotropin-releasing hormone test and combined dexamethasone/corticotropine-releasing hormone test for severity evaluation and outcome prediction in patients with major depressive disorder.
    Author: Isogawa K, Nagayama H, Tsutsumi T, Kiyota A, Akiyoshi J, Hieda K.
    Journal: J Psychiatr Res; 2005 Sep; 39(5):467-73. PubMed ID: 15992555.
    Abstract:
    We performed a prospective study designed to examine whether or not evaluation of the severity and prediction of treatment outcome in major depressive disorder would be enabled by simultaneous use of the thyrotropin-releasing hormone (TRH) test and the combined dexamethasone/corticotropin-releasing hormone (DEX/CRH) test. We studied consecutive patients hospitalized for major depressive disorder. The patients received the TRH test and the DEX/CRH test on the 4th through the 7th hospital days and at the time of improvement. None of the indices in these tests at the time of admission correlated with the Hamilton rating scale for depression (HRSD) or the Global Assessment for Function (GAF). However, since the DeltaMAXACTH, ACTHAUC, DeltaMAXcortisol, and CortisolAUC showed significant decreases at the time of improvement compared with the time of admission, suggesting that the DEX/CRH test can be a state marker. DeltaMAXTSH showed no significant change. Prediction of improvement within 3 months after admission was not possible with either test alone. However, the quotient which divided DeltaMAXACTH by DeltaMAXTSH was predictive of clinical improvement with a sensitivity of 50% and a specificity of 100%. The simultaneous use of the TRH test and the DEX/CRH test seems to provide a more useful biological marker than the separate use of either test alone in patients with major depressive disorder.
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