Unveiling of Placental-Fetal Heart Interplay: A Novel Etiologic and Therapeutic Insight-A Narrative Review

Area of Science:

• Developmental Biology
• Cardiovascular Science
• Obstetrics

Background:

• Congenital heart disease (CHD) is the most common fetal anomaly globally, with largely unknown causes.
• While genetic factors are implicated in some cases, epigenetic and environmental influences are considered more prevalent.
• Placental malformations are increasingly recognized as a potential, yet overlooked, contributor to CHD.

Purpose of the Study:

• To present a hypothesis on the etiological link between placental disorders and congenital heart disease.
• To explore the bidirectional communication and shared regulatory pathways between the developing placenta and fetal heart.
• To elucidate common causes affecting both placental and fetal heart development.

Main Methods:

• This study is a narrative review based on clinical reports and animal studies.
• It synthesizes existing literature to form a hypothesis regarding the placenta-CHD relationship.
• Analysis focuses on shared genetic, epigenetic, and environmental factors.

Main Results:

• The placenta and fetal heart share developmental pathways, indicating a two-way communication.
• Placental insufficiency can lead to fetal cardiac remodeling, and placental diseases are more common in fetuses with CHD.
• Factors like fetal vascular malperfusion, disturbed embryonic blood flow, and genetic/epigenetic regulators (e.g., NOTCH pathway) impact both organs.

Conclusions:

• The interplay between the placenta and fetal heart offers a new perspective on CHD etiology.
• Placental insufficiency and CHD may share common underlying causes, including vascular and genetic factors.
• Understanding these shared pathways is crucial for identifying novel etiological factors for both conditions.