Serum prolactin and tardive dyskinesia

Area of Science:

• Neuroscience
• Pharmacology
• Endocrinology

Background:

• Tardive dyskinesia (TD) is a movement disorder associated with antipsychotic medication.
• Hyperprolactinemia, elevated serum prolactin, is a common side effect of antipsychotics.
• The relationship between prolactin levels and TD severity requires further investigation, particularly concerning sex differences.

Purpose of the Study:

• To investigate the correlation between serum prolactin levels and the severity of tardive dyskinesia.
• To explore potential sex-related differences in the association between prolactin and TD.
• To examine the influence of age, sex, antipsychotic dosage, and illness severity on prolactin levels in individuals with TD.

Main Methods:

• Serum prolactin levels were measured in men and postmenopausal women with and without TD.
• Participants were undergoing treatment with antipsychotic medication.
• Statistical analyses were performed to correlate prolactin levels with clinical variables.

Main Results:

• Women with severe TD exhibited significantly higher prolactin levels compared to those with mild TD.
• No significant difference in prolactin levels was observed between men with severe and mild TD.
• Prolactin levels were correlated with TD severity in a sex-dependent manner.

Conclusions:

• The findings suggest a sex-specific association between serum prolactin levels and tardive dyskinesia severity.
• Elevated prolactin may play a role in the pathophysiology of TD, particularly in women.
• Further research, including animal studies on prolactin and estrogen effects on the striatum, is warranted.