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Overview
Gestational diabetes mellitus (GDM) affects ~14% of pregnancies and represents a critical window where metabolic, microbial, and metal factors converge. This signature is preliminary, built from 6 sources emphasizing fungal dysbiosis and microbiome-derived metabolite pathways.
Metallomic Signature
Confidence: preliminary
Iron elevation and zinc/selenium depletion patterns are inferred from overlap with type 2 diabetes signature and limited GDM-specific metal data. Direct metallomic studies in GDM pregnancy cohorts are needed.
Taxonomic Analysis
Confidence: preliminary
Enrichment of bacteroides and depletion of faecalibacterium prausnitzii observed across multiple studies ([1], [2]). Fungal dysbiosis — particularly shifts in Candida and Saccharomyces — is a distinctive feature ([3]).
Associated Conditions
GDM shares overlapping signatures with:
- type 2 diabetes — shared iron/zinc patterns, Bacteroides enrichment (overlap 0.45)
- pcos — shared iron patterns, insulin resistance mechanisms (overlap 0.30)
- obesity — shared iron/zinc patterns (overlap 0.35)
Open Questions
- What is the complete metallomic signature specific to GDM (vs. inherited from T2D)?
- How does fungal-bacterial cross-kingdom interaction drive GDM pathophysiology?
- Can preconception microbiome interventions prevent GDM in high-risk women?