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  • Title: Lack of ACTH lowering effect of sodium valproate in patients with ACTH hypersecretion.
    Author: Loli P, Berselli ME, Frascatani F, Muratori F, Tagliaferri M.
    Journal: J Endocrinol Invest; 1984 Apr; 7(2):93-6. PubMed ID: 6327800.
    Abstract:
    The effect of an oral dose of 200 or 400 mg sodium valproate (DPA) on ACTH and cortisol secretion was assessed in 11 patients with Cushing's disease (3 bilaterally adrenalectomized), 3 patients with Nelson's syndrome and 6 patients with Addison's disease. In none of the patients examined DPA induced changes in ACTH (and cortisol) levels appreciably different from the fluctuations recorded after placebo administration. The effect of a long term administration of sodium valproate (600-1000 mg/day) was evaluated in 2 patients with active Cushing's disease and in 1 patient with Nelson's syndrome (3 weeks, 3, 9 months respectively); in the 2 patients with Cushing's disease ACTH and cortisol secretion, 17-hydroxy-corticosteroids (17-OHCS) urinary excretion did not change during DPA treatment. Similarly the cortisol response to hypoglycemia and the 17-OHCS urinary excretion after dexamethasone were not normalized. Long term DPA administration did not induce either clinical or hormonal modifications in the patient with Nelson's syndrome. These findings do not support the possibility that a deficiency of a GABAergic system plays a role in the pathogenesis of ACTH hypersecretion. DPA does not seem to be of therapeutical value in the medical management of Cushing's disease and Nelson's syndrome.
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