Androgen modulation of Wnt/β-catenin signaling in androgenetic alopecia.
Level 5 - mechanism / opinion, no new human data
Narrative review of molecular mechanisms without systematic search methodology or original human trial data.
PubMed 29549490 · doi:10.1007/s00403-018-1826-8
What was done
This narrative review synthesized recent literature investigating how androgens and androgen receptor transactivation regulate Wnt/β-catenin signaling in dermal papilla cells of the balding scalp in androgenetic alopecia. It examined androgen-induced factors secreted by dermal papilla cells that stimulate catagen entry and reviewed potential therapeutic strategies targeting Wnt/β-catenin signaling.
What was found
The abstract reports no numerical findings or quantitative effect sizes. It qualitatively describes the molecular cross-talk between androgen receptor activation and Wnt/β-catenin pathway suppression that contributes to hair follicle miniaturization and shortened anagen duration.
Why it matters
Understanding the downstream pathway interactions between androgen signaling and Wnt/β-catenin offers a biological framework for exploring non-androgenic therapeutic targets in androgenetic alopecia.
Limits
The paper is a narrative review with no systematic search methodology, risk-of-bias assessment, or meta-analysis. The abstract provides no primary clinical data, participant sample sizes, or quantitative outcome measures.
Cited by
- supports Androgenetic alopecia involves androgen-induced miniaturization of the hair follicle and a progressive shortening of the anagen growth phase.