Pathophysiology of valvular heart disease

Area of Science:

• Cardiovascular Biology
• Biomineralization
• Medical Science

Background:

• Valvular heart disease (VHD) involves defects in heart valves, with increasing prevalence due to aging populations and technological advances.
• Risk factors include age, gender, tobacco use, hypercholesterolemia, hypertension, and type II diabetes.
• Calcific aortic valve disease (CAVD) is a common form, often progressing to severe calcific aortic stenosis requiring surgical intervention.

Purpose of the Study:

• To review the current understanding of VHD biology, focusing on molecular and cellular mechanisms.
• To address clinical questions and explore new medical treatment strategies for VHD.
• To highlight the role of signaling pathways in valve morphogenesis and cardiovascular calcification.

Main Methods:

• Literature review of VHD biology, molecular and cellular regulation.
• Analysis of signaling pathways involved in cardiac valve development and calcification.
• Examination of current clinical challenges and potential therapeutic avenues.

Main Results:

• VHD pathogenesis involves complex cell-dependent mechanisms and pathways similar to skeletal morphogenesis.
• CAVD progresses asymptomatically in early stages, leading to severe outcomes and high mortality.
• Biomarkers like asymmetric dimethylarginine and fetuin-A show potential in managing VHD outcomes.

Conclusions:

• Effective pharmacotherapies for VHD are lacking, with aortic valve replacement being the primary treatment.
• Understanding VHD's molecular and cellular basis is crucial for developing novel medical treatments.
• Further research into VHD regulation and biomarkers is needed to improve patient outcomes.