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Plasma concentrations of interleukin-1beta (IL-1beta), interleukin-6 (IL-6) and tumour necrosis factor alpha (TNFalpha) were measured in 10 elderly women with major depressive disorder (MDD) and in two groups of controls, one consisting of 10 age-matched healthy female volunteers and one consisting of 10 young healthy female volunteers. The cytokine concentrations were measured in MDD patients before and after 30 days of treatment with phosphatidylserine (BC-PS), 600 mg daily p.o. The plasma IL-Ibeta, IL-6 and TNFalpha concentrations did not differ significantly in young controls, elderly controls and MDD patients. BC-PS therapy, while significantly improving the depressive symptoms, did not alter the cytokine concentrations.

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Immunological, neuroendocrine and psychological parameters were examined in 14 psychophysically healthy subjects and in 17 panic disorder patients before and after a 30-day course of alprazolam therapy. T lymphocyte proliferation in response to the mitogen phytohemoagglutinin, lymphocyte beta-endorphin (β-EP) concentrations, plasma ACTH, cortisol and β-EP levels were examined in basal conditions and after corticotropin-releasing hormone (CRH) stimulation. Cortisol inhibition by dexamethasone (DST) and basal growth hormone (GH) and prolactin levels were also examined. Depression, state or trait anxiety, anticipatory anxiety, agoraphobia, simple and social phobias, severity and frequency of panic attacks were monitored by rating scales. The immune study did not reveal any significant difference between patients and controls, or any effect of alprazolam therapy. The hormonal data for the two groups were similar, except for higher than normal basal ACTH and GH plasma levels, lower than normal ratios between the ACTH and cortisol responses to CRH, and blunted DST in some patients. All the impairments improved after alprazolam therapy, in parallel with decreases in anxiety and in severity and frequency of panic attacks.

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