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Reduced tuberoinfundibular dopaminergic neuronal function in rats after long-term withdrawal of estrogen treatment

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Summary

Hypothalamic fragments from female rats treated repeatedly with estradiol valerate (EV) and bearing prolactin (PRL)-secreting tumors contained, seven months after the last EV injection, lower concentrations of dopamine (DA) than age-matched controls. Depolarizing concentrations of K+ (35 mM) and amphetamine (50 μM) evoked in PRL-secreting tumor bearing rats an endogenous DA release significantly lower than in controls.

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Annunziato, L., Cocchi, D., di Renzo, G. et al. Reduced tuberoinfundibular dopaminergic neuronal function in rats after long-term withdrawal of estrogen treatment. Experientia 42, 425–427 (1986). https://doi.org/10.1007/BF02118641

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