Published online by Cambridge University Press: 23 March 2020
Clinical, epidemiological and basic research studies have confirmed that estradiol can have protective effects in schizophrenic psychoses. At the same time many patients with schizophrenic psychoses – even antipsychotic naïve at-risk mental state (ARMS) patients show hyperprolactinemia and gonadal dysfunction with estrogen deficiency in women and possibly testosterone deficiency in men.
To investigate the relation between the stress hormone prolactin and the sex hormones estradiol in women and testosterone in men in emerging psychosis.
Forty-seven antipsychotic-naïve ARMS (38 men and 9 women) and 17 antipsychotic-naive first episode psychosis (FEP) (14 men and 3 women) patients were recruited via the Basel Früherkennung von Psychosen (FePsy) study. Blood was taken under standardized conditions between 8 and 10 am after an overnight fast and 30 minutes of rest. We performed a linear regression model to evaluate the association between prolactin and sex hormones including age and current antidepressant use as covariates.
In women, estradiol was negatively associated with prolactin (β = −1.28, P = 0.01) whereas in men there was a positive association of testosterone with prolactin (β = 0.52, P = 0.031).
The often observed estrogen deficiency in women with psychosis could therefore be explained by the stress hormone prolactin suppressing the gonadal axis already in very early untreated stages of the emerging disease.
In ARMS or FEP men prolactin does not seem to influence the gonadal axis in the same way as in women.
The authors have not supplied their declaration of competing interest.
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