Pregnancy as a cardiac stress model

Area of Science:

• Cardiovascular Physiology
• Reproductive Medicine
• Molecular Cardiology

Background:

• Pregnancy induces cardiac hypertrophy due to volume overload and hormonal shifts.
• Pregnancy- and exercise-induced cardiac hypertrophy share similarities but have distinct molecular signatures.
• Pregnancy can precipitate adverse cardiac events, including peripartum cardiomyopathy, in susceptible women.

Purpose of the Study:

• To review the cardiac adaptations during normal pregnancy.
• To elucidate the molecular pathways driving pregnancy-induced cardiac hypertrophy and angiogenesis.
• To compare cardiac adaptation in pregnancy with other physiological and pathological states.

Main Methods:

• Literature review of haemodynamic, functional, structural, morphological, and molecular changes in the heart during pregnancy.
• Analysis of gene expression patterns and signaling pathways involved in cardiac adaptation.
• Comparative analysis of cardiac hypertrophy in response to pregnancy, exercise, and disease.

Main Results:

• Pregnancy elicits unique gene expression profiles in the heart, differing from exercise-induced hypertrophy.
• Specific signaling pathways mediate pregnancy-associated cardiac hypertrophy and angiogenesis.
• Cardiac adaptation during pregnancy involves complex haemodynamic, structural, and molecular alterations.

Conclusions:

• Understanding normal pregnancy-induced cardiac adaptation is essential for identifying pathological changes.
• Distinct molecular phenotypes characterize pregnancy-related cardiac hypertrophy.
• Comparative analysis offers insights into the mechanisms underlying pregnancy-associated cardiovascular changes and risks.