Commentary: Lactylation-related gene AKR1A1 contributes to osteoporosis via metabolic–immune regulation: evidence from multi-omics integration, single-cell transcriptomics, and in vitro validation - Cui, Jintao; Xu, Bin; Zhang, Penghui; Han, Songfu; Guo, Chaoyanng; Wei, Limin (Frontiers in Immunology, 2026)