Abstract
Chronic inflammatory pain is often caused by peripheral tissue damage and persistent inflammation. This disease substantially affects patients’ physical and social well-being. We investigated the role of metallothionein-3 (MT3) in modulating complete Freund’s adjuvant (CFA)-induced intracellular Zn2+ activity in an MT3 knockout mouse model of inflammatory pain in the hind paw. The results demonstrated that increasing intracellular Zn2+ levels ameliorate deficits in motor behavior, as well as inflammation in the paw, spleen, and thymus. Furthermore, intracellular Zn2+ was crucial in regulating oxidative stress markers (glutathione, superoxide dismutase, catalase, and malondialdehyde) and inflammatory cytokines, such as tumor necrosis factor-α and interleukin-6, in MT3 knockout mice induced with CFA. This study highlights the critical role of MT3 in coordinating the intracellular interaction with Zn2+, which is vital for the immune systems’s protective functions. These interactions are fundamental for maintaining metal ion homeostasis and regulating the synthesis of various biomolecules in the body.
Published Version
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