The role of Zinc in glucocorticoid-Induced glaucoma: mechanisms and therapeutic approaches
Journal Title: Eye Science (Yanke Xuebao) - Year 2024, Vol 39, Issue 6
Abstract
Glucocorticoid (GC) is widely used in the treatment of ocular inflammation for its anti-inflammatory propery. However, glucocorticoid-induced glaucoma (GIG) is a common complication, and its pathogenesis has been extensively studied. This review summarizes the crucial role of zinc in GIG and its regulatory mechanisms, highlighting zinc's significant involvement in the pathogenesis of glaucoma. Zinc, the second most abundant transition metal in the human body, is essential for protein structure, enzyme catalysis, and cell signaling regulation. The effects of GC on zinc distribution vary across different tissues and cell types, affecting zinc uptake and release, which may contribute to the pathological processes of glaucoma. Zinc influences the degradation and remodeling of the trabecular meshwork extracellular matrix and the survival and axonal regeneration of retinal ganglion cells, playing complex roles in the pathogenesis of GIG. We discuss available strategies for regulating zinc in vivo, including zinc supplementation and reduction strategies, providing potential therapeutic approaches. Future research should explore the mechanisms of zinc's role in glaucoma and its interaction with glucocorticoids, evaluate the safety and efficacy of zinc supplementation or chelation in glaucoma treatment, and develop novel zinc delivery and chelation systems. These efforts will help fully elucidate the role of zinc in glaucoma and its therapeutic potential, enabling more precise prevention and treatment strategies to improve patient outcomes.
Authors and Affiliations
Canying LIU, Yiqing LI
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