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Abstract: Elevated levels of some neuroactive progesterone metabolites, particularly isopregnanolone, in women with chronic fatigue syndrome

  [ 90 votes ]   [ Discuss This Article ]
www.ProHealth.com • November 10, 2003


Psychoneuroendocrinology. 2004 Feb;29(2):245-68.

Murphy BE, Abbott FV, Allison CM, Watts C, Ghadirian AM.

Department of Psychiatry, McGill University, 1033 Pine Avenue West, H3A 1A1, Montreal, Canada

Chronic fatigue syndrome (CFS) is a controversial entity whose cause is unknown. In this study we have explored the possibility that progesterone metabolites may be involved. Plasma levels of the progesterone precursor pregnenolone, progesterone itself, and five ring A-reduced metabolites of progesterone were measured in 20 women with CFS and in 13 age-matched controls. To minimize the contribution of the ovary, women were either post-menopausal or in the follicular phase of the menstrual cycle (day 4-8), and progesterone levels were all well within the expected range (
These elevated levels of isopregnanolone could not be attributed to medications (antidepressants and anxiolytics). When the CFS patients were divided into two groups according to their Hamilton depression scale ratings, mean (+/-SD) isopregnanolone levels were higher (274+/-160 vs 197+/-119 pmol/l) in the less depressed group (ratings 2-14) than in the more depressed group (ratings 17-28), although this difference did not reach significance. Progesterone levels were negatively correlated with Hamilton depression rating scores (r=-0.56; p<0.01). These results suggest that increases in ring A-reduced progesterone metabolites, particularly isopregnanolone, are associated with CFS, and that the pathophysiology of CFS is unlikely to be due to depression.

PMID: 14604604 [PubMed - in process] Psychoneuroendocrinology. 2004 Feb;29(2):245-68. Related Articles, Links




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