Steroidogenesis in the skin: implications for local immune functions.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanistic and biochemical pathways with no original empirical data or systematic search protocol.
PubMed 23435015 · doi:10.1016/j.jsbmb.2013.02.006
What was done
This narrative review summarizes evidence regarding the cutaneous steroidogenic system, detailing how skin cells produce glucocorticoids, androgens, and estrogens from systemic precursors or de novo from cholesterol, and describes regulatory factors including corticotropin-releasing hormone, adrenocorticotropic hormone, cytokines, and ultraviolet B radiation.
What was found
The abstract reports no quantitative metrics, effect sizes, or experimental data points. It qualitatively outlines that skin compartments (epidermis, dermis, adnexal structures, adipose tissue) synthesize active steroids such as cortisol, corticosterone, testosterone, dihydrotestosterone, and estradiol, along with CYP11A1-derived 7Δ-steroids and secosteroids, which modulate epidermal homeostasis and local immune responses.
Why it matters
Recognizing skin as an autonomous steroidogenic organ highlights local endocrine signaling as a relevant mechanism in cutaneous immunity, offering conceptual targets for managing inflammatory and autoimmune skin disorders.
Limits
As a non-systematic narrative review, the paper does not report search methodology, study selection criteria, sample sizes, or quantitative synthesis. Clinical translation to human therapeutic interventions remains speculative based on the reviewed mechanistic literature.
Cited by
- supports All steroid hormones in the body, including testosterone and estradiol, are enzymatically derived from cholesterol as their biochemical precursor.