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[Mature time demarcation of human immature myocardium]
1Department of Thoracic and Cardiovascular Surgery, First Affiliated Hospital of Hubei Medical University, Wuhan 430060, China.
Insights
Human immature myocardium matures structurally and functionally between 6-9 years old. This study details the developmental timeline of pediatric myocardial maturation.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Developmental Biology
Context:
- The maturation of the human myocardium is crucial for cardiac function throughout life.
- Understanding pediatric myocardial development is essential for diagnosing and treating congenital heart conditions.
Purpose:
- To investigate the developmental timeline and key characteristics of human immature myocardium maturation.
- To establish the age-related demarcation for mature myocardial structure and function in children.
Summary:
- This study examined the morpho-ultrastructure, calcium, energy, and oxygen free radical metabolism in the myocardium of children with ventricular septal defects.
- Findings indicate that immature myocardium exhibits distinct structural and functional properties, with age-related changes progressing towards mature levels by 6-9 years of age.
- The maturation process showed variability in specific indices, highlighting a complex developmental trajectory.
Impact:
- Provides critical insights into the developmental stages of the pediatric heart.
- Establishes a reference point for assessing myocardial maturity in pediatric cardiac research and clinical practice.
- Contributes to a better understanding of cardiac development in children, potentially aiding in early diagnosis and intervention strategies.
Objective:
To study the mature time demarcation of human immature myocardium.
Methods:
The morpho-ultrastructure, calcium metabolism, energy metabolism and oxygen free radicals metabolism of myocardium of children with ventricular septal defect without pulmonary hypertension or any clinical symptoms were studied at different ages.
Results:
The immature myocardium possessed its own structure and functional characteristics. Before viripotent period, the age-related myocardial changes developed progressively to mature and almost approached to mature levels at 6-9 years old. The indices of immature myocardium developing to mature levels were inconsistent.
Conclusion:
The structure and function of human immature myocardium approaches to mature levels at 6-9 years old.