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  • Title: Gender-specific association of alexithymia and norepinephrine/cortisol ratios. A preliminary report.
    Author: Spitzer C, Brandl S, Rose HJ, Nauck M, Freyberger HJ.
    Journal: J Psychosom Res; 2005 Aug; 59(2):73-6. PubMed ID: 16186001.
    Abstract:
    OBJECTIVE: Alexithymia and posttraumatic stress disorder (PTSD) might share a neuroendocrine pattern characterized by increased urinary norepinephrine (N) and decreased cortisol (C) levels, resulting in a high N/C ratio, at least among male alcoholics. We aimed to explore if this association can also be found in other populations. METHODS: Twenty-four-hour urine samples were obtained from 12 major depressive disorder (MDD) patients and 23 healthy controls (HC) and tested for N and free C. Participants completed the 20-item Toronto Alexithymia Scale (TAS) and the Symptom Check List (SCL). RESULTS: Controlling for depression, the neuroendocrine parameters did not differ between the MDD and HC participants nor between women and men. The TAS was not associated with N, C or the N/C ratio in the MDD and HC participants nor in females alone. However, in men, the N/C ratio correlated significantly with the TAS (r = .80). CONCLUSIONS: Our preliminary findings indicate that alexithymia is associated with an increased noradrenergic activity and a decreased basal activity of the hypothalamic-pituitary-adrenal (HPA) axis among men. This gender difference may reflect divergent underlying neurobiological processes of alexithymia in men and women.
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