Reproductive hormones modulate oxidative stress in Alzheimer's disease

Anna M. Barron, Stephanie J. Fuller, Giuseppe Verdile, Ralph N. Martins*

*Corresponding author for this work

Research output: Contribution to journalReview article

39 Citations (Scopus)

Abstract

Alzheimer's disease (AD) is a neurodegenerative disease characterized by gradual cognitive decline, impairments in speech and language, and dysfunction in the sensorimotor systems, culminating in complete reliance on nursing care. Oxidative stress, caused by an imbalance in the pro-oxidant/antioxidant mechanisms in the body, has been implicated in AD pathogenesis, as in many other age-associated diseases such as atherosclerosis, Parkinson disease, and amyotrophic lateral sclerosis. Although the hormones estrogen, progesterone, testosterone, and luteinizing hormone are best known for their roles in reproduction, many studies show these hormones have other roles, including neuroprotection. Changes in the levels of these hormones that occur in reproductive senescence are hypothesized to increase risk of AD, as a result of reduced protection against oxidative insults. The Aβ peptide, overproduction of which is thought to be a key pathogenic event in the development of AD, is neurotoxic, most likely due to its ability to promote oxidative stress. The reproductive hormones are known to influence Aβ metabolism, and this review discusses the beneficial and detrimental effects these hormones have on Aβ production and oxidative stress, and their relevance in potential AD therapies.

Original languageEnglish
Pages (from-to)2047-2059
Number of pages13
JournalAntioxidants and Redox Signaling
Volume8
Issue number11-12
Publication statusPublished - Nov 2006
Externally publishedYes

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