ArticleJournal of cosmetic dermatology2026
Targeting Circadian Rhythm for the Regulation of Skin Collagen Metabolism.
Article in Journal of cosmetic dermatology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Targeting Circadian Rhythm for the Regulation of Skin Collagen Metabolism.Journal of cosmetic dermatology · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
15 authors.
Funding
Abstract
backgroundCollagen is essential for maintaining skin structure and function, and the circadian rhythm is known to regulate a wide range of physiological processes.
aimsTo investigate whether collagen metabolism in human skin fibroblasts exhibits circadian regulation, and to evaluate whether the time-coordinated application of baicalin at daytime and palmitoyl tripeptide-1 (PT-1) at nighttime synergistically promotes collagen fiber formation and improves overall skin quality.
methodsA circadian-synchronized human skin fibroblast model was established. The expression of collagen metabolism-related genes was analyzed using qPCR and immunofluorescence. Subsequently, an 8-week topical application study was conducted in mice using a regimen of daytime baicalin and nighttime PT-1. Finally, a clinical trial involving 30 female participants was conducted, employing the same time-coordinated application scheme.
resultsFibroblasts exhibited opposing day-night rhythms: genes for collagen assembly (e.g., LOX) peaked during the day, while those involved in synthesis/secretion (e.g., Sec61a2, Mia3, Pde4d, Vps33b) and degradation (e.g., CTSK, MMP1) peaked at night. Time phase-dependent interventions showed baicalin enhanced daytime assembly, while PT-1 boosted nighttime synthesis. In mice, a timed day-night combination therapy increased collagen fiber density. Clinical trial (n = 30) confirmed the efficacy, showing significant improvements in skin luminance (+16.29%), nasolabial fold depth (-36.35%), and firmness (R2: +24.35%).
conclusionsCollagen metabolism is regulated by circadian rhythms. Chronomodulated baicalin and PT-1 application synergistically optimize collagen metabolism and improve skin quality.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.