Cholesterol Contributes to Male Sex Differentiation Through Its Developmental Role in Androgen Synthesis and Hedgehog Signaling.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic pathways without primary empirical human data or systematic review methodology.
PubMed 33784378 · doi:10.1210/endocr/bqab066
What was done
This narrative review summarizes evidence regarding the roles of cholesterol in fetal masculinization, focusing on its function as a precursor for testicular androgen biosynthesis and its role in supporting Hedgehog signaling during male sex differentiation, as well as how perturbations relate to 46,XY variations of sex development (VSD).
What was found
The abstract reports conceptual and mechanistic relationships without providing numerical data. It notes that functional interactions between Hedgehog and androgen signaling pathways are required for male sex differentiation, and that defects in cholesterol synthesis produce developmental phenotypes resembling those caused by disrupted androgen or Hedgehog signaling.
Why it matters
The paper outlines how cholesterol metabolism integrates endocrine and local morphogen signaling pathways critical to masculinization, clarifying mechanistic contributors to pediatric 46,XY variations of sex development.
Limits
As a narrative review, it presents no primary clinical data, quantitative measurements, or systematic review methodology. Analysis is restricted to qualitative mechanism-based reasoning.
Cited by
- supports Sex steroid hormones, including testosterone, are biochemically synthesized from cholesterol.