Perivascular Adipose Tissue and Vascular Smooth Muscle Tone: Friends or Foes?

Area of Science:

• Cardiovascular Biology
• Adipose Tissue Research
• Vascular Physiology

Background:

• Perivascular adipose tissue (PVAT) is a metabolically active endocrine organ surrounding blood vessels.
• PVAT critically influences cardiovascular disease onset and progression.
• PVAT regulates vascular smooth muscle cell growth and endothelium function.

Purpose of the Study:

• To review the regulatory effects of PVAT on vascular tone.
• To identify key vasoactive factors involved in PVAT's dual role.
• To highlight the importance of PVAT in developing targeted therapies.

Main Methods:

• Literature review of studies on PVAT and vascular tone.
• Analysis of factors released by PVAT under physiological and pathophysiological conditions.
• Synthesis of current understanding of PVAT's role in cardiovascular health.

Main Results:

• Under physiological conditions, PVAT releases anticontractile factors (e.g., NO, H2S, adiponectin).
• Under pathophysiological conditions, PVAT can promote contraction by altering factor release (e.g., superoxide anion, angiotensin II).
• PVAT exhibits a dual role in vascular tone regulation, shifting from protective to detrimental effects.

Conclusions:

• PVAT significantly impacts vascular tone through a complex interplay of secreted factors.
• The dual role of PVAT in vascular tone is context-dependent, influencing cardiovascular health.
• Targeting PVAT is a promising strategy for future cardiovascular therapies.