Acute lung injury (ALI) may be significantly improved through lysine supplementation, according to new preclinical research. Researchers found lysine depletion in injured lung epithelial cells linked to impaired mitochondrial function and disrupted cellular repair.
In mouse models, lysine increased survival from 0% to 62.5%, reduced inflammation, alveolitis, and extracellular matrix buildup. Similar protective effects were seen in non-human primates, highlighting translational potential.
Lysine restored acetyl-CoA levels, enabling recovery of α-tubulin acetylation-critical for ciliary function. This stabilized calcium signaling, preserving key barrier proteins like E-cadherin and ZO-1.
The regenerative benefits were strongest in surfactant protein C-positive alveolar type II cells, central to lung repair. Lysine enhanced ciliogenesis, directly supporting epithelial regeneration.
The findings position lysine as both a metabolic and structural regulator in lung healing. While the work remains preclinical, results suggest a promising, accessible therapeutic path for ALI if validated in human trials.
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