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GHK-Cu, a copper-binding tripeptide complex, is widely researched for its involvement in collagen-related signaling, oxidative stress response, and peptidemetal interactions

KPV acts directly on MC1R/MC4R receptors on macrophages and epithelial cells, reducing IL-6 and TNF- at the transcription level [7,8]

2 The circadian system, sleep, and their changes with aging This section outlines the fundamental organization of the circadian system and describes how circadian rhythms and sleep architecture are modified across the aging process

doi: 10.1093/nar/gky1062 166 De ClercqEEcksteinFMeriganTC

Based on differences in the carbon skeleton, phenolic acids can be mainly divided into two categories: hydroxycinnamic acid (e.g., cinnamic acid, ferulic acid, caffeic acid, and chlorogenic acid) and hydroxybenzoic acid (e.g., gallic acid, ellagic acid, syringic acid, and Danshensu) [157]