Pathophysiology and Treatment of Kashin-Beck Disease

Kashin-Beck disease is a chronic, endemic osteochondropathy characterised by necrosis and apoptosis of growth-plate and articular chondrocytes, leading to malformed joints and compromised mobility. Pathophysiological drivers include environmental toxins such as T-2 mycotoxin, nutritional deficiencies (notably selenium and iodine), and genetic predispositions that converge on dysregulated signalling pathways—p38 MAPK, TGF-β/Smad3 and Wnt/β-catenin—resulting in extracellular matrix breakdown and impaired collagen II synthesis. Autophagy imbalance and oxidative stress further exacerbate cartilage degeneration. Recent insights into chondrocyte heterogeneity reveal expansion of mitochondrial-rich and homeostatic subpopulations in affected cartilage, underlining distinct cellular contributions to tissue damage. Therapeutic strategies range from primary prevention—selenium-enriched salt and improved grain and water quality—to targeted molecular interventions. Experimental treatments include kinase inhibitors, antioxidant flavonoids such as hesperetin, gene-regulatory approaches and cell-based therapies aimed at restoring cartilage integrity. Together, these advances hold promise for mitigating disease burden in endemic regions and illuminating fundamental mechanisms of cartilage homeostasis worldwide.

Research from Nature Portfolio

Proteomic profiling of knee cartilage from patients with Kashin-Beck disease versus osteoarthritis has identified over 300 differentially abundant proteins. Enriched pathways include extracellular matrix–receptor interaction, focal adhesion, PI3K–Akt and Ras signalling, with integrins, laminins and NF-κB emerging as nodal regulators of cartilage degeneration. Parallel studies of circulating microRNA expression have uncovered altered signatures linked to hypoxia response, Wnt receptor signalling and vitamin B6 biosynthesis. Integration of miRNA and mRNA data has delineated regulatory networks that may drive chondrocyte death and matrix loss, offering novel biomarker candidates and mechanistic insights into disease onset.

Pathophysiology and Treatment of Kashin-Beck Disease publication trend

The graph below shows the total number of articles in pathophysiology and treatment of kashin-beck disease across all publications each year (not limited to Nature Index journals).

Technical terms

Chondrocyte: A specialised cartilage cell responsible for maintenance of the extracellular matrix.

Extracellular matrix (ECM): A network of collagens, proteoglycans and glycoproteins that provides structural support to cartilage.

Autophagy: A cellular degradation pathway that recycles damaged organelles and proteins.

p38 MAPK signalling: A stress-activated kinase cascade involved in inflammatory and apoptotic responses.

Matrix metalloproteinase-13 (MMP13): An enzyme that degrades type II collagen in cartilage.

Type II collagen: The main fibrillar collagen providing tensile strength to cartilage.

MicroRNA (miRNA): Small noncoding RNA molecules that regulate gene expression post-transcriptionally.

Long noncoding RNA (lncRNA): RNA transcripts longer than 200 nucleotides that modulate gene expression and chromatin states.

Single-cell RNA sequencing: A technique for profiling transcriptomes of individual cells to reveal cellular heterogeneity.

References

1. Hesperetin Attenuates T-2 Toxin-Induced Chondrocyte Injury by Inhibiting the p38 MAPK Signaling Pathway. Nutrients (2024).
2. WISP1 Is Involved in the Pathogenesis of Kashin-Beck Disease via the Autophagy Pathway. International Journal of Molecular Sciences (2023).
3. Comparison of the major cell populations among osteoarthritis, Kashin–Beck disease and healthy chondrocytes by single-cell RNA-seq analysis. Cell Death & Disease (2021).
4. Proteomic analysis of knee cartilage reveals potential signaling pathways in pathological mechanism of Kashin-Beck disease compared with osteoarthritis. Scientific Reports (2020).
5. Comparison of microRNA expression profiles of Kashin-Beck disease, osteoarthritis and rheumatoid arthritis. Scientific Reports (2017).
6. TGF-β1/Smad3 Signaling Pathway Mediates T-2 Toxin-Induced Decrease of Type II Collagen in Cultured Rat Chondrocytes. Toxins (2017).
7. Prevention and control strategies for children Kashin–Beck disease in China. Medicine (2019).