Lesch-Nyhan Syndrome: Low Dopamine-β-Hydroxylase Activity and Diminished Sympathetic Response to Stress and Posture

Abstract
Patients with Lesch-Nyhan syndrome with virtually no hypoxanthine phosphoribosyltransferase activity demonstrate significantly low plasma activity of dopamine-β-hydroxylase but normal basal levels of norepinephrine. Under conditions of emotional or postural stress the plasma concentrations of norepinephrine in Lesch-Nyhan patients increased less than in a normal population.
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