S-Equol, an Antioxidant Metabolite of Soy Daidzein, and Oxidative Stress in Aging
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Equol may increase Nrf2 levels and/or bind to estrogen-responsive elements (EREs) in the promoter region of the Nrf2 gene and/or increase gene expression of other antioxidant genes.
“Specifically, equol may increase Nrf2 levels and/or bind to the estrogen-responsive elements (EREs) in the promoter region the Nrf2 gene and/or increase gene expression of other antioxidant genes [2,97].”
The molecular mechanism involves release of Nrf2 from Keap1 and subsequent binding to the antioxidant response element (ARE) present in the promoter region of genes for antioxidant proteins and enzymes.
“This molecular mechanism has been described, where it involves the release of Nrf2 (transcription factor) from Keap 1 (its cytoplasmic binding protein) and subsequent binding to the antioxidant response element (ARE) that are present in the promoter region of genes for antioxidant proteins and enzymes [6,97].”
Nrf2 activation increases antioxidant gene expression of several proteins.
“since Nrf2 activation is known to increase antioxidants gene expression of several proteins”
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Shrestha, R. K., Nayak, S., Maharjan, P. S., Pokharel, B., Jhingan, G. D., Singh, R. P., Bhavesh, N. S., & Shrestha, B. G. (2025) · BMC Complementary Medicine and Therapies · doi:10.1186/s12906-025-04806-0 · Cited by 5 · see citing works
Zhang, B., Zhang, X., Ma, L., Li, D., Li, Y., Lin, S., Peng, L., & He, L. (2026) · Experimental Gerontology · doi:10.1016/j.exger.2026.113168 · Cited by 1 · see citing works
Shrestha, R. K., Nayak, S., Maharjan, P. S., Pokharel, B., Jhingan, G. D., Singh, R. P., Bhavesh, N. S., & Shrestha, B. G. (2024) · Research Square · doi:10.21203/rs.3.rs-5051041/v1
- Authors
- Jackson, R. L., Greiwe, J. S., & Schwen, R. J.
- Venue
- Aging
- Publisher
- Elsevier
- Published
- 2014
- Pages
- 145-155
- OpenAlex
- W2478376051
- Cited by
- 4
- References
- 62
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2018: 1
- FWCI
- 0.00
- Type
- book chapter
- Language
- en
- Open access
- closed
- Locations
- Elsevier eBooks (publishedVersion)
- Topics
- Health Sciences › Medicine › Pathology and Forensic Medicine › Phytoestrogen effects and research
- Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
- Keywords
- S-equol, daidzein, soy phytoestrogens, oxidative stress, aging, estrogen receptor beta, GPR30, skin aging, cardiovascular risk, selective estrogen receptor modulators, Asian populations
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