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Broader reviews further suggest bidirectional crosstalk between lactylation and autophagy: lactylation of DCBLD1 can stabilize PPP enzymes and DCBLD1 itself to support redox balance by limiting autophagic degradation of PPP components, whereas lactylation of VPS34 and TFEB enhances PtdIns3P production, lysosomal activity, and autophagic flux (including TFEB stabilization via protection from WWP2-mediated ubiquitination)

As we age, these signals diminish, resulting in declining growth hormone output

Hypertension, 54(3), 567-74

Molecular Biotechnology, 37 (1), 31-37

Injectable protocols effectively aim to restore or exceed youthful plasma concentrations -- a goal impossible through topical application