Journal
SCIENTIFIC REPORTS
Volume 5, Issue -, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/srep10140
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Funding
- Taiwan National Science Council [NSC98-2314-B-006-022-MY3]
- Taiwan Department of Health [DOH 95-TD-M-113-055]
- Taiwan National Health Research Institute [NHRI-EX-97-9738NI]
- National Cheng Kung University Project for Promoting Academic Excellence and Developing World Class Research Centers
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Low-dose memantine might have anti-inflammatory and neurotrophic effects mechanistically remote from an NMDA receptor. We investigated whether add-on memantine reduced cytokine levels and benefitted patients with opioid dependence undergoing methadone maintenance therapy (MMT) in a randomized, double-blind, controlled 12-week study. Patients were randomly assigned to a group: Memantine (5 mg/day) (n = 53) or Placebo (n = 75). The methadone dose required and retention in treatment were monitored. Plasma tumor necrosis factor (TNF)-alpha, C-reactive protein (CRP), interleukin (IL)-6, IL-8, transforming growth factor (TGF)-beta 1, and brain-derived neurotrophic factor (BDNF) levels were examined during weeks 0, 1, 4, 8, and 12. General linear mixed models were used to examine therapeutic effect. After 12 weeks, Memantine-group required a somewhat lower methadone dose than did Placebo-group (P = 0.039). They also had significantly lower plasma TNF-alpha and significantly higher TGF-beta 1 levels. We provide evidence of the benefit of add-on memantine in opioid dependent patients undergoing MMT.
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