Heart failure & cardiomyopathies

Serum Proteomic Analysis of Peripartum Cardiomyopathy Reveals Distinctive Dysregulation of Inflammatory and Cholesterol Metabolism Pathways

JACC Heart FailPublished Mechanistic study

Authors' conclusion

Serum proteomic profiling of PPCM relative to NPCM and healthy controls indicated that PPCM is a distinct disease entity characterized by the unique dysregulation of inflammation-related pathways and cholesterol metabolism-related anti-inflammatory pathways.

Study context

Population
Women with pathophysiology of peripartum cardiomyopathy (PPCM) or nonperipartum cardiomyopathy (NPCM) and healthy peripartum and nonperipartum women; serum from the IPAC and IMAC2 studies
Participants
67 / 31 / 10 / 10
Comparison
PPCM vs NPCM and healthy controls
  • PPCMn = 67
  • NPCMn = 31reference
  • Healthy peripartumn = 10
  • Healthy nonperipartumn = 10
Outcome
Serum proteome
Methodological detailsaptamer-based proteomic analysis (SomaScan 7K)
  • Aptamer-based proteomic analysis (SomaScan 7K)

Main finding

As reported in the abstract

Unique clustering of each patient group on principal component analysis
P for difference <0.001
Specific dysregulation of inflammatory pathways in PPCM vs NPCM, incl. upregulation of the cholesterol metabolism-related anti-inflammatory LXR/RXR pathway
P < 0.01, Z-score 1.9-2.1

Further findings

Cardiac recovery in PPCM · 12 months

Associated with downregulation of pro-inflammatory pathways and upregulation of LXR/RXR and PPARα/RXRα signaling

Original publication

Serum Proteomic Analysis of Peripartum Cardiomyopathy Reveals Distinctive Dysregulation of Inflammatory and Cholesterol Metabolism Pathways. JACC Heart Fail. Published 2 August 2023. doi:10.1016/j.jchf.2023.05.031

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