FGF21 and SHBG as Putative Hepatic Axes in Maternal Metabolic Adaptation: A Hypothetical Framework for Postpartum Insulin Sensitivity Restoration.
Level 5 - mechanism / opinion, no new human data
Narrative review proposing a hypothetical mechanistic framework without new empirical data
PubMed 42509792 · doi:10.3390/biom16070998
What was done
This narrative review synthesized literature to propose a conceptual framework examining fibroblast growth factor 21 (FGF21) and sex hormone-binding globulin (SHBG) as hepatic signals involved in maternal metabolic adaptation during pregnancy and the recovery of insulin sensitivity postpartum.
What was found
The abstract reports no numerical data, sample sizes, or quantitative findings. Conceptually, it outlines that late-pregnancy FGF21 acts as a metabolic stress-response factor linked to fatty acid oxidation and mitochondrial adaptation via AMPK-PPARα pathways, while reduced SHBG reflects hepatic insulin resistance. The authors propose that postpartum metabolic restoration is an active regulatory process driven by these hepatic axes rather than simple passive clearance of placental hormones.
Why it matters
Reframing postpartum metabolic normalization as an active hepatokine-driven process provides a theoretical foundation for investigating FGF21 and SHBG as potential biomarkers for diabetes risk after gestational diabetes.
Limits
This is a narrative review and theoretical framework with no new human or animal data and no quantitative or systematic synthesis. The proposed mechanisms and potential clinical utility remain hypothetical and require prospective empirical testing.
Cited by
- supports Pregnancy induces a state of transient, adaptive insulin resistance.