Cited by 86Osteoarthritis Treatment and MechanismsSirtuins and Resveratrol in MedicineFolate and B Vitamins Research

Homocysteine causes dysfunction of chondrocytes and oxidative stress through repression of SIRT1/AMPK pathway: A possible link between hyperhomocysteinemia and osteoarthritis

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Ma, Ching-Hou, Chiua,, Yen Chun, Wu, Chin-Hsien, Jou, I.-Ming, Tu, Yuan-Kun, Hung, Ching-Hsia, Hsieh, Pei-Ling, Tsai, Kun-Ling·2018·Redox Biology

Abstract

Emerging evidence has indicated that the perturbed expression of homocysteine (Hcy) may induce mitochondrial dysfunction and disturb bone metabolism. Sirtuin 1 (SIRT1) and AMP-activated protein kinase (AMPK) are two critical sensors that regulate mitochondrial biogenesis and have been recognized as therapeutic targets in osteoarthritis (OA). This study was designed to test whether Hcy caused pro-osteoarthritic changes through modulation of SIRT1 and AMPK. Our results showed that administration of Hcy reduced the SIRT1/AMPK/PGC-1α signaling in chondrocytes, leading to mitochondrial dysfunction as a result of increased oxidative stress and apoptosis. Moreover, we demonstrated that the expression of NF-κB, COX-2, IL-8, and MMP-13 were elevated subsequent to inhibition of SIRT1/AMPK/PGC-1α/PPAR-γ pathway by homocysteine, thereby causing detrimental effects on chondrocytes. In the animal model of diet-induced hyperhomocysteinemia (HHcy), we observed the similar findings that SIRT1/PGC-1α/PPAR-γ cascades were downregulated with elevated MMP-13 and COX-2. Taken together, data from the current study revealed that the reduced SIRT1 by Hcy may contribute to degradative cartilage process, which provided insight into the etiology of OA.

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Crossref · 10.1016/j.redox.2018.01.010

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  • SIRT1 activation is an effective approach to manage hyperhomocysteinemia-induced oxidative stress.

    “Previous reports have suggested that SIRT1 activation is an effective approach to manage HHcy‐induced oxidative stress,33, 34”

    From Picroside <scp>II</scp> attenuates hyperhomocysteinemia‐induced endothelial injury by reducing inflammation, oxidative stress and cell apoptosis (2019) · cites this paper as [33]

    The Results section, “Homocysteine-induced oxidative stress is reversed by activation of SIRT1/AMPK/PGC-1α signaling,” reports that SIRT1 overexpression reduced the oxidative-stress effects of homocysteine in human chondrocytes. This supports SIRT1 activation as a potential approach, but the cell experiments do not establish that it effectively manages hyperhomocysteinemia-induced oxidative stress in patients. (LLM, conf=0.84)

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Authors
Ma, C.-H., Chiua, Wu, C.-H., Jou, I.-M., Tu, Y.-K., Hung, C.-H., Hsieh, P.-L., & Tsai, K.-L.
Affiliations
  • E-Da Hospital (TW)
  • National Cheng Kung University (TW)
  • Chung Shan Medical University (TW)
Corresponding author
  • Hsieh, Pei-Ling
  • Tsai, Kun-Ling
Venue
Redox Biology
Publisher
Elsevier BV
Published
2018-05
Volume
15
Pages
504-512
ISSN
2213-2317 (ISSN-L)
OpenAlex
W2790970464
Cited by
86
References
36
Citations by year
2026: 11 · 2025: 11 · 2024: 9 · 2023: 13 · 2022: 11 · 2021: 12 · 2020: 9 · 2019: 5 · 2018: 5
FWCI
6.62
Type
journal article
Language
en
Open access
Locations
  • Redox Biology (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Ministry of Science and Technology, Taiwan (105-2311-B-006-008, 106-2314-B-006-023)
  • National Cheng Kung University
  • Ministerio de Ciencia y Tecnología
  • E-Da Hospital (NCKUEDA10613)
Topics
  • Health Sciences › Medicine › Rheumatology › Osteoarthritis Treatment and Mechanisms
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Health Sciences › Medicine › Rheumatology › Folate and B Vitamins Research
Keywords
homocysteine, hyperhomocysteinemia, osteoarthritis, chondrocytes, SIRT1, AMPK, PGC-1α, PPARγ, mitochondrial dysfunction, oxidative stress, apoptosis, MMP-13, cyclooxygenase-2, NF-κB, cartilage degeneration
MeSH terms
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, AMP-Activated Protein Kinase Kinases, Animals, Gene Expression Regulation, Homocysteine, Humans, Mitochondria, Osteoarthritis, Protein Kinases, Signal Transduction, Oxidative Stress, Chondrocytes, Hyperhomocysteinemia, PPAR gamma, Mice, Cyclooxygenase 2, Matrix Metalloproteinase 13, Sirtuin 1

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