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Current Pharmaceutical Design

Editor-in-Chief

ISSN (Print): 1381-6128
ISSN (Online): 1873-4286

Pharmacotherpy and Alzheimer’s Disease: The M-Drugs (Melatonin, Minocycline, Modafinil, and Memantine) Approach

Author(s): Mak Adam Daulatzai

Volume 22, Issue 16, 2016

Page: [2411 - 2430] Pages: 20

DOI: 10.2174/1381612822666160203142111

Price: $65

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Abstract

Despite advances in understanding the pathophysiology of Alzheimer’s disease (AD), its therapy remains largely symptomatic and supportive. Acetylcholinesterase inhibitors - the first-line drugs used today do not prevent and treat AD. So far, over 90 Phase 3 trials of AD have been unsuccessful with 99.0% failure rate. There is, therefore, an urgent need to find effective new therapies for AD. Owing to the multifactorial nature of AD pathogenesis, polypharmacy with drugs that target heterogeneous pathophysiological pathways, needs to be considered. Fortunately, several drugs used currently in clinical use as monotherapies can be exploited in AD. This article, therefore, presents a novel pharmacological treatment paradigm and recommends the use of valuable diseasemodifying approved drugs, viz. melatonin, minocycline, modafinil, and memantine (the “M” Drugs). Melatonin - a neuroprotector is an antioxidant and anti-inflammatory. Minocycline is also neuroprotective, it reduces neuroinflammation and CNS pathology and prevents cell death. Sleep deprivation leads to decreased hippocampal neurogenesis, increased amyloid beta generation, and causes memory dysfunction. Modafinil - a wake-promoting agent is approved for use in narcolepsy and obstructive sleep apnea. It improves global mental status, hippocampal neurogenesis, attention, and cognition. Memantine is an uncompetitive N-methyl-d-aspartic acid receptor antagonist and is approved for the management of moderate-to-severe AD. The paramount possible beneficial effects of the M-drugs may include significant memory and cognitive enhancement in aging, mild cognitive impairment, and AD. The M drugs-centric pharmacotherapy strategy is comprehensive and pragmatic and is meant to combat multiple pathological targets and ameliorate cognitive dysfunction/AD.

Keywords: Alzheimer’s disease, inflammation, oxidative and nitrosative stress, Melatonin, Minocycline, Modafinil, Memantine, amyloid beta, tau hyperphosphorylation.


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