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Related Experiment Video

Updated: Jun 20, 2026

Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry

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Age-related changes in redox signaling and VSMC function.

Muyao Li¹, Naomi K Fukagawa

¹Department of Medicine, University of Vermont College of Medicine, Burlington, 05405, USA.

Antioxidants & Redox Signaling

|September 10, 2009

Summary

Aging increases cardiovascular disease risk by altering vascular smooth muscle cells (VSMC). Key signaling pathways in VSMC are implicated in age-related vascular dysfunction and disease progression.

Area of Science:

Cardiovascular Biology
Aging Research
Cellular Signaling

Background:

Advancing age correlates with higher cardiovascular disease (CVD) prevalence.
Vascular smooth muscle cells (VSMC) are crucial in arteries; age-related changes in their function, behavior, and redox status drive vascular remodeling and altered cell signaling.
Aged animal models confirm age-associated alterations in VSMC and arterial tissues, characterized by increased reactive oxygen species (ROS) production and reduced scavenging capacity.

Purpose of the Study:

To review age-related changes in signaling pathways within VSMC.
To explore how these changes influence VSMC behavior and function, contributing to vascular aging and CVD.
To highlight the role of transcription factors in mediating these age-related cellular alterations.

Main Methods:

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Review of existing literature on aged animal models.
Analysis of age-related changes in VSMC and arterial tissues.
Focus on signaling pathways involving transcription factors AP-1, NF-kappaB, FoxO, and Nrf2.

Main Results:

Enhanced ROS production and diminished ROS scavenging are key features of vascular aging.
VSMC proliferation and migration, critical for vascular remodeling, are influenced by growth factors and signaling networks.
Age-related modulation of transcription factors impacts genes involved in VSMC proliferation, inflammation, and ROS production.

Conclusions:

Understanding age-related signaling pathway alterations in VSMC is vital for addressing vascular dysfunction.
Targeting these pathways may offer strategies to mitigate age-related CVD, including atherosclerosis.
Knowledge of VSMC signaling in aging provides insights into vascular remodeling and disease progression.