ArticleThe American journal of sports medicine2022
Dexamethasone Enhances Achilles Tendon Healing in an Animal Injury Model, and the Effects Are Dependent on Dose, Administration Time, and Mechanical Loading Stimulation.
Article in The American journal of sports medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 20 citations in OpenAlex.
- Tendon healing in the era of regenerative medicine: literature review.Annals of translational medicine · 2026Review
- Nutritional adaptation to circadian misalignment: implications for musculoskeletal health in modern lifestyles.Frontiers in nutrition · 2026Review
- Early activity after strong sutures helps to tendon healing in a rat tendon rupture model.Scientific reports · 2025Article
- Dexamethasone: a cheap and convenient way to alleviate subsequent stenosis after thermal injury on ureter.Translational andrology and urology · 2024Article
- Dexamethasone treatment influences tendon healing through altered resolution and a direct effect on tendon cells.Scientific reports · 2024Article
- Optimizing tendon repair and regeneration: how does theFrontiers in bioengineering and biotechnology · 2024Review
- Increased expression of glutathione peroxidase 3 prevents tendinopathy by suppressing oxidative stress.Frontiers in pharmacology · 2023Article
- Review
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCorticosteroid treatments such as dexamethasone are commonly used to treat tendinopathy but with mixed outcomes. Although this treatment can cause tendon rupture, it can also stimulate the tendon to heal. However, the mechanisms behind corticosteroid treatment during tendon healing are yet to be understood. PURPOSE: To comprehend when and how dexamethasone treatment can ameliorate injured tendons by using a rat model of Achilles tendon healing. STUDY
designControlled laboratory study.
methodsAn overall 320 rats were used for a sequence of 6 experiments. We investigated whether the drug effect was time-, dose-, and load-dependent. Additionally, morphological data and drug administration routes were examined. Healing tendons were tested mechanically or used for histological examination 12 days after transection. Blood was collected for flow cytometry analysis in 1 experiment.
resultsWe found that the circadian rhythm and drug injection timing influenced the treatment outcome. Dexamethasone treatment at the right time point (days 7-11) and dose (0.1 mg/kg) significantly improved the material properties of the healing tendon, while the adverse effects were reduced. Local dexamethasone treatment did not lead to increased peak stress, but it triggered systemic granulocytosis and lymphopenia. Mechanical loading (full or moderate) is essential for the positive effects of dexamethasone, as complete unloading leads to the absence of improvements.
conclusionWe conclude that dexamethasone treatment to improve Achilles tendon healing is dose- and time-dependent, and positive effects are perceived even in a partly unloaded condition. CLINICAL RELEVANCE: These findings are promising from a clinical perspective, as the positive effect of this drug was seen even when given at lower doses and in a moderate loading condition, which better mimics the load level in patients with tendon ruptures.
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