Abstract
Klotho is a humoral factor with pleiotropic effects. Most notably, Klotho deficiency is associated with a phenotype comprising organ manifestations accompanying aging including atherosclerosis and cognitive impairment. Research on the role of Klotho in affective disorder is scarce, which is surprising in light of the fact that depression is associated with accelerated cellular aging as well as aging-related phenotypes and comorbidity observed in Klotho deficiency. Soluble α-Klotho (sKlotho) serum levels in patients with a major depressive episode and either undergoing electroconvulsive therapy (n = 16) or a monotherapy with an antidepressant (n = 37) were investigated. We measured the sKlotho serum levels in those patients before and after treatment and compared the baseline levels with those of age-matched healthy controls (n = 39). No group differences were found between the baseline sKlotho levels of patients and controls (573.5 pg/ml vs. 563.8 pg/ml; p = 0.80) and between pre- and post-treatment in the patients with depression (563.8 pg/ml vs. 561.8 pg/ml; p = 0.15), when treated either with electroconvulsive therapy or antidepressant. The major limitation of our study might be that peripheral material such as serum might not reliably reflect processes in the central nervous system. In sum, this first study on peripheral sKlotho levels in a clinical sample cannot confirm a global Klotho dysregulation in depression as it has been already suggested by others. Nonetheless, further preclinical and clinical studies on the involvement of Klotho in affective disorders should be carried out.
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LK received support from the German Research Foundation (DFG Grant no. KR 4689/3-1).
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Sartorius, A., Gilles, M., Pfeifer, AM. et al. Peripheral levels of the anti-aging hormone Klotho in patients with depression. J Neural Transm 126, 771–776 (2019). https://doi.org/10.1007/s00702-019-02008-w
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DOI: https://doi.org/10.1007/s00702-019-02008-w