Journal
FASEB JOURNAL
Volume 22, Issue 5, Pages 1296-1305Publisher
FEDERATION AMER SOC EXP BIOL
DOI: 10.1096/fj.07-8627rev
Keywords
cell cycle; neurodegenerative diseases; APP mRNA; multifunctional drugs
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Dysregulation of brain iron homeostasis is central to early neuropathological events in Alzheimer's disease (AD), including oxidative stress, inflammatory processes, amyloid deposition, tau phosphorylation, and neuronal cell cycle regulatory failure, leading to apoptosis. Also, there is a direct link between iron metabolism and AD pathogenesis, demonstrated by the presence of an iron-responsive element in the 5' UTR of the amyloid precursor protein transcript. As a consequence of these findings, a new paradigm is emerging that includes the development of iron-chelating neuroprotective-neurorescue drugs with multimodal functions, acting at various pathological brain targets. This concept is challenging the widely held assumption that silver bullet agents are superior to dirty drugs in drug therapy for neurodegenerative diseases. At best, the so-called magic bullets exhibit moderate symptomatic activity without modifying the course of disease progression. The present review elaborates on conventional and novel therapeutic targets of various multifunctional iron-chelating drugs (e.g., chemically designed compounds; natural polyphenols) that address multiple central nervous system etiologies in AD, aimed at preventing or slowing disease evolution. A similar approach in drug design is being investigated for treatment of cancer, AIDS, cardiovascular diseases, and depression.
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