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Mean Serum Allopregnanolone Low Across Weight Extremes

Also tied to increased depression and anxiety severity, independent of body mass index

Mean Serum Allopregnanolone Low Across Weight Extremes

THURSDAY, Nov. 30, 2017 (HealthDay News) -- Women at both extremes of the weight spectrum have low mean serum allopregnanolone, which has been linked to increased depression and anxiety severity, according to a study published online Nov. 1 in Neuropsychopharmacology.

Laura E. Dichtel, M.D., from Massachusetts General Hospital in Boston, and colleagues evaluated 36 women who were age-matched (1:1) across three groups: anorexia nervosa, healthy controls, and overweight/obese. Gas chromatography/mass spectrometry was used to measure fasting serum neuroactive steroids.

The researchers found that mean Hamilton depression and anxiety scores were highest in anorexia nervosa (P < 0.0001). Compared to healthy controls, mean serum allopregnanolone was lower in anorexia nervosa and overweight/obese (P = 0.01), despite comparable mean serum progesterone. Independent of body mass index, allopregnanolone was negatively associated with depression and anxiety symptom severity, but not progesterone. Despite a significant negative association between free testosterone levels and both anxiety and depression severity, serum 3α-androstanediol levels did not differ among groups; they were also not associated with depression or anxiety scores.

"Neuroactive steroids such as allopregnanolone may be potential therapeutic targets for depression and anxiety in traditionally treatment-resistant groups including anorexia nervosa," the authors write.

One author disclosed financial ties to the pharmaceutical industry.

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