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Maintenance N-acetyl cysteine treatment for bipolar disorder : a double-blind randomized placebo controlled trial

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Maintenance N-acetyl cysteine treatment for bipolar disorder : a double-blind randomized placebo controlled trial

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Título Maintenance N-acetyl cysteine treatment for bipolar disorder : a double-blind randomized placebo controlled trial
Autor Berk, Michael
Dean, Olivia M.
Cotton, Sue M.
Gama, Clarissa Severino
Kapczinski, Flávio Pereira
Fernandes, Brisa Simões
Kohlmann, Kristy
Jeavons, Susan
Hewitt, Karen
Moss, Kirsteen
Allwang, Christine
Schapkaitz, Ian
Cobb, Heidi
Bush, Ashley I.
Dodd, Seetal
Malhi, Gin S.
Abstract Background: N-acetyl cysteine (NAC) is a glutathione precursor that has been shown to have antidepressant efficacy in a placebo-controlled trial. The current study aimed to investigate the maintenance effects of NAC following eight weeks of open-label treatment for bipolar disorder. Method: The efficacy of a double blind randomized placebo controlled trial of 2 g/day NAC as adjunct maintenance treatment for bipolar disorder was examined. Participants (n = 149) had a Montgomery Asberg Depression Rating Score of ≥12 at trial entry and, after eight weeks of open-label NAC treatment, were randomized to adjunctive NAC or placebo, in addition to treatment as usual. Participants (primarily outpatients) were recruited through public and private services and through newspaper advertisements. Time to intervention for a mood episode was the primary endpoint of the study, and changes in mood symptoms, functionality and quality of life measures were secondary outcomes. Results: There was a substantial decrease in symptoms during the eight-week open-label NAC treatment phase. During the subsequent double-blind phase, there was minimal further change in outcome measures with scores remaining low. Consequently, from this low plateau, between-group differences did not emerge on recurrence, clinical functioning or quality of life measures. Conclusions: There were no significant between-group differences in recurrence or symptomatic outcomes during the maintenance phase of the trial; however, these findings may be confounded by limitations. Trial Registration: The trial was registered with the Australian New Zealand Clinical Trials Registry (ACTRN12607000074493).
Contido em BMC medicine. Londres. Vol. 10 (Aug. 2012), 11p.
Assunto Depressão
Estresse oxidativo
Manutenção
Transtorno bipolar
[en] Bipolar disorder
[en] Depression
[en] Maintenance
[en] Mania
[en] N-acetyl cysteine
[en] Oxidative
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/111819
Arquivos Descrição Formato
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