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Coniferaldehyde prevents articular cartilage destruction in a murine model via Nrf2/HO‑1 pathway
Dawei Cai1, Jieling Wang2, Sichun Chen1
1Department of Orthopaedics, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu 211100, P.R. China.
Abstract:
Osteoarthritis (OA) is the most prevalent joint disorder characterized by progressive cartilage damage, resulting in gradual disability among the elderly. We previously provided in vivo evidence that nuclear factor erythroid 2‑related factor 2 (Nrf2) deficiency is associated with the development of OA. It has been reported that coniferaldehyde (CFA) acts as a potential Nrf2 activator. The aim of the present study was to investigate the protective effects of CFA against osteoarthritis. A murine model of surgical‑induced OA was used in the present study and CFA was administered by peritoneal injection every day, and the knee joints were assessed by histological analysis. The results demonstrated that CFA activated the Nrf2 signaling pathway in primary chondrocytes and articular cartilage from the knee joints. Cartilage damage in mice subjected to the destabilization of the medial meniscus was evidently alleviated by CFA treatment. CFA also robustly suppressed apoptosis induced by H2O2 in murine chondrocytes and reduced the expression of matrix metalloproteinase (MMP)1, MMP3, interleukin (IL)‑1 and IL‑6 in vivo. On the whole, the findings suggested that CFA exerts a therapeutic effect against OA, and the activation of the Nrf2/heme oxygenase‑1 pathway may play a crucial role in CFA‑mediated cartilage protection.
Insights
Coniferaldehyde (CFA) shows therapeutic potential for osteoarthritis (OA) by activating the Nrf2 pathway. This treatment alleviates cartilage damage and suppresses key inflammatory markers in OA models.
Area of Science:
- Biomedical Science
- Orthopedics
- Pharmacology
Background:
- Osteoarthritis (OA) is a prevalent joint disorder causing cartilage damage and disability, particularly in the elderly.
- Nuclear factor erythroid 2-related factor 2 (Nrf2) deficiency is linked to OA development.
- Coniferaldehyde (CFA) is identified as a potential Nrf2 activator.
Purpose of the Study:
- To investigate the protective effects of CFA against osteoarthritis.
- To determine if CFA can mitigate OA progression in a murine model.
- To elucidate the role of Nrf2 activation in CFA's therapeutic action.
Main Methods:
- Surgical-induced murine model of OA.
- Daily intraperitoneal administration of CFA.
- Histological analysis of knee joints.
- Assessment of Nrf2 signaling pathway activation.
- Evaluation of chondrocyte apoptosis and inflammatory marker expression.
Main Results:
- CFA activated the Nrf2 signaling pathway in chondrocytes and articular cartilage.
- CFA treatment significantly alleviated cartilage damage in OA mice.
- CFA suppressed hydrogen peroxide-induced apoptosis in chondrocytes.
- CFA reduced the expression of MMP1, MMP3, IL-1, and IL-6 in vivo.
Conclusions:
- CFA demonstrates a therapeutic effect against osteoarthritis.
- Activation of the Nrf2/heme oxygenase-1 pathway is crucial for CFA's cartilage-protective effects.
- CFA represents a promising therapeutic agent for OA management.
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