Review maps molecular pathways of skin aging and proposed diagnostics
This review describes intrinsic and extrinsic drivers of skin aging, converging molecular pathways, and emerging diagnostics and therapeutics; it is an abstract only, so methods and results are not reported. [1]
Automatic summary · not editorially reviewed
The key findings
The review describes skin aging as shaped by intrinsic genetic programming and extrinsic environmental stressors, with chronological aging dominated by telomere attrition, mitochondrial dysfunction, epigenetic drift and fibroblast senescence. [1]
The review highlights reactive oxygen species-driven MAPK/NF-κB activation, PI3K/Akt-mTOR dysregulation, TGF-β/Smad impairment, Wnt/β-catenin decline, mechanotransduction failure and sirtuin-mediated mitochondrial compromise as central mediators. [1]
The review discusses emerging dermatological therapeutics, including probiotic and postbiotic microbiome modulation, nanoformulation-driven delivery, epigenetic reprogramming, senolytics and mitochondrial revitalization, with current limitations such as specificity and stability. [1]
The source at a glance
- Study type / format
- Review (abstract only)
- Population / context
- Skin and aged skin, described in a review; no human participants are specified.
- Summary based on
- Study abstract
- Original publication
- August 25, 2026
Intrinsic and extrinsic drivers of skin aging
The review describes skin aging as multifactorial and dynamically regulated, shaped by intrinsic genetic programming together with extrinsic environmental stressors. Chronological skin aging is said to be dominated by telomere attrition, mitochondrial dysfunction, epigenetic drift and fibroblast senescence. Extrinsic factors such as UV-induced photooxidation, pollution and lifestyle toxins are described as accelerating reactive oxygen species surges, DNA photolesions and extracellular matrix fragmentation. Both groups of pathways are said to converge on epidermal thinning, collagen degradation, barrier dysfunction, pigmentation heterogeneity and inflammaging-driven microenvironmental collapse.
Supporting source [1]
Pathways and proposed diagnostics in the review
The review highlights reactive oxygen species-driven activation of MAPK (Mitogen-activated protein kinase)/NF-κB (Nuclear factor kappa-B), dysregulation of PI3K/Akt-mTOR (Mechanistic target of rapamycin), impairment of TGF-β/Smad (Transforming growth factor-β/SMAD) signaling, decline of Wnt/β-catenin, failure of mechanotransduction and sirtuin-mediated mitochondrial compromise as central mediators. It also discusses skin dysbiosis-driven lipid barrier disruption and a senescence-associated secretory phenotype-driven inflammaging as underlying factors for a systemic inflammatory disorder-like phenotype in aged skin. Proposed diagnostic advances include Cutometer®-based elasticity mapping, corneometry and AI-assisted histopathology, described as aiding rapid and objective precision in quantifying biological age.
Supporting source [1]
Emerging therapeutics and stated limitations
The review discusses mechanism of action and application of emerging dermatological therapeutics: probiotic and postbiotic-based microbiome modulation, nanoformulation-driven targeted delivery, epigenetic reprogramming, senolytics and mitochondrial revitalization. It describes these in terms of current limitations such as specificity and stability, and highlights future scope. The abstract concludes that skin aging is a multidimensional process orchestrated at a molecular level and clinically actionable, framed as enabling personalized anti-aging innovation and precision dermatology frameworks. No trial results, effect sizes or treated populations are reported in the abstract.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. No study design, sample, follow-up, effect sizes or treated populations are reported, and the diagnostics and therapeutics are discussed as emerging or proposed rather than validated.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Sharma M, Chawla S. · europepmc.org · August 25, 2026