Del Río Eloy
Independent Researcher, 11520 Cádiz, Spain.
Biomedicines. 2025 Mar 1;13(3):598. doi: 10.3390/biomedicines13030598.
Osteoarthritis (OA) is a chronic and debilitating joint disease characterized by progressive cartilage degeneration for which no definitive cure exists. Conventional management approaches often rely on fragmented and poorly coordinated pharmacological and non-pharmacological interventions that are inconsistently applied throughout the disease course. Persistent controversies regarding the clinical efficacy of chondroprotective agents, frequently highlighted by pharmacovigilance agencies, underscore the need for a structured evidence-based approach. Emerging evidence suggests that synchronizing pharmacotherapy and exercise regimens with circadian biology may optimize therapeutic outcomes by addressing early pathological processes, including low-grade inflammation, oxidative stress, and matrix degradation. Recognizing the influence of the chondrocyte clock on these processes, this study proposes a 'prototype' for a novel framework that leverages the circadian rhythm-aligned administration of traditional chondroprotective agents along with tailored, accessible exercise protocols to mitigate cartilage breakdown and support joint function. In addition, this model-based framework emphasizes the interdependence between cartilage chronobiology and time-of-day-dependent responses to exercise, where strategically timed joint activity enhances nutrient and waste exchange, mitigates mitochondrial dysfunction, supports cellular metabolism, and promotes tissue maintenance, whereas nighttime rest promotes cartilage rehydration and repair. This time-sensitive, comprehensive approach aims to slow OA progression, reduce structural damage, and delay invasive procedures, particularly in weight-bearing joints such as the knee and hip. However, significant challenges remain, including inter-individual variability in circadian rhythms, a lack of reliable biomarkers for pharmacotherapeutic monitoring, and limited clinical evidence supporting chronoexercise protocols. Future large-scale, longitudinal trials are critical to evaluate the efficacy and scalability of this rational integrative strategy, paving the way for a new era in OA management.
骨关节炎（OA）是一种慢性且使人衰弱的关节疾病，其特征为软骨进行性退化，目前尚无确切的治愈方法。传统的管理方法通常依赖于零散且协调不佳的药物和非药物干预措施，这些措施在整个疾病过程中的应用并不一致。药物警戒机构经常强调的关于软骨保护剂临床疗效的持续争议，凸显了采用结构化循证方法的必要性。新出现的证据表明，使药物治疗和运动方案与昼夜生物学同步，可能通过解决早期病理过程，包括低度炎症、氧化应激和基质降解，来优化治疗效果。认识到软骨细胞生物钟对这些过程的影响，本研究提出了一个新框架的“原型”，该框架利用与昼夜节律一致的传统软骨保护剂给药方式以及量身定制、易于实施的运动方案，以减轻软骨破坏并支持关节功能。此外，这个基于模型的框架强调了软骨生物钟学与运动的时间依赖性反应之间的相互依存关系，即适时安排的关节活动可增强营养物质和废物交换、减轻线粒体功能障碍、支持细胞代谢并促进组织维持，而夜间休息则促进软骨再水化和修复。这种对时间敏感的综合方法旨在减缓OA的进展、减少结构损伤并推迟侵入性手术，尤其是在膝关节和髋关节等负重关节中。然而，重大挑战依然存在，包括昼夜节律的个体差异、缺乏用于药物治疗监测的可靠生物标志物以及支持计时运动方案的临床证据有限。未来大规模的纵向试验对于评估这种合理综合策略的疗效和可扩展性至关重要，为OA管理的新时代铺平道路。
