Fludrocortisone and Information Processing in Healthy Volunteers

Summary

Stimulating the mineralocorticoid receptor (MR) may restore a disturbed balance as seen in depression. In this double-blind, randomized, placebo-controlled trial the investigators will test the effects of a single dose (500mg) fludrocortisone, an MR-agonist, on the information processing in healthy female volunteers (N = 2x20). The investigators want to investigate whether the acute administration of fludrocortisone (FC) in healthy females enhances the appraisal of emotional information related to depression, hypothesizing that: * FC relative to placebo selectively improves the recognition of happy and fearful faces: resulting in more correct responses and faster RTs. * FC induces a bias towards more positive self-description and an improved memory for positive information. Female participants were selected because the haplotype MRI180V is related to depression vulnerability in women, not in men. If the effects of fludrocortisone are comparable to the effects of antidepressants on the same tests and the same population, it might be a first indication that fludrocortisone may function as an antidepressant.

Timeline

Start

2012-05

Primary completion

2013-06

Completion

2013-12

Publications

• Background Otte C, Hinkelmann K, Moritz S, Yassouridis A, Jahn H, Wiedemann K, Kellner M. Modulation of the mineralocorticoid receptor as add-on treatment in depression: a randomized, double-blind, placebo-controlled proof-of-concept study. J Psychiatr Res. 2010 Apr;44(6):339-46. doi: 10.1016/j.jpsychires.2009.10.006. Epub 2009 Nov 11.
• Background Klok MD, Vreeburg SA, Penninx BW, Zitman FG, de Kloet ER, DeRijk RH. Common functional mineralocorticoid receptor polymorphisms modulate the cortisol awakening response: Interaction with SSRIs. Psychoneuroendocrinology. 2011 May;36(4):484-94. doi: 10.1016/j.psyneuen.2010.07.024. Epub 2010 Sep 29.
• Background Harmer CJ, Goodwin GM, Cowen PJ. Why do antidepressants take so long to work? A cognitive neuropsychological model of antidepressant drug action. Br J Psychiatry. 2009 Aug;195(2):102-8. doi: 10.1192/bjp.bp.108.051193.
• Background Buckley TM, Mullen BC, Schatzberg AF. The acute effects of a mineralocorticoid receptor (MR) agonist on nocturnal hypothalamic-adrenal-pituitary (HPA) axis activity in healthy controls. Psychoneuroendocrinology. 2007 Sep-Nov;32(8-10):859-64. doi: 10.1016/j.psyneuen.2007.05.016. Epub 2007 Jul 30.
• Background Klok MD, Alt SR, Irurzun Lafitte AJ, Turner JD, Lakke EA, Huitinga I, Muller CP, Zitman FG, de Kloet ER, Derijk RH. Decreased expression of mineralocorticoid receptor mRNA and its splice variants in postmortem brain regions of patients with major depressive disorder. J Psychiatr Res. 2011 Jul;45(7):871-8. doi: 10.1016/j.jpsychires.2010.12.002. Epub 2010 Dec 30.

Drugs

Indications