H2S and Blood Vessels: An Overview

Area of Science:

• Physiology
• Biomedical Science
• Cardiovascular Research

Background:

• Hydrogen sulfide (H2S) is increasingly recognized for its physiological and biomedical significance in the cardiovascular system.
• Cystathionine γ-lyase (CSE) is a key enzyme producing H2S in blood vessels, including smooth muscle, endothelium, and adipose tissues.

Purpose of the Study:

• To explore the multifaceted roles of the CSE/H2S system in cardiovascular function and disease.
• To highlight the regulatory mechanisms of H2S production and its impact on vascular cells.
• To underscore the therapeutic potential of targeting the CSE/H2S pathway for vascular disorders.

Main Methods:

• Review of existing literature on CSE/H2S system in cardiovascular physiology and pathology.
• Analysis of H2S involvement in smooth muscle and endothelial cell functions.
• Examination of H2S roles in periadventitial adipose tissues and vascular tone regulation.

Main Results:

• H2S regulates critical vascular cell functions including apoptosis, phenotypic switching, relaxation, contraction, calcification, proliferation, senescence, oxidative stress, and inflammation.
• H2S acts synergistically with nitric oxide, functioning as endothelium-derived relaxing and hyperpolarizing factors.
• H2S from adipose tissue modulates vascular tone as an adipocyte-derived relaxing factor.

Conclusions:

• The CSE/H2S system demonstrates significant beneficial effects in cardiovascular diseases such as hypertension, atherosclerosis, and aortic aneurysm.
• Targeting H2S production or activity holds promise for developing novel therapeutic strategies for blood vessel disorders.
• Further research into the CSE/H2S signaling pathway is warranted to fully exploit its therapeutic applications.