The Role and Mechanism of Vascular Aging in Geriatric Vascular Diseases

Shouyao Zhang1, Bo Xia2, Bill Kalionis3

  • 1The Second Clinical Medical College, The Second Affiliated Hospital, Yunnan University of Chinese Medicine, Kunming, China.

Aging and Disease
|September 26, 2024
PubMed

Insights

Vascular aging drives organ system decline and diseases like atherosclerosis in older adults. Strategies targeting endothelial repair and reducing inflammation can counter these aging effects for healthier longevity.

Area of Science:

  • Gerontology and Cardiovascular Science
  • Pathophysiology of Aging

Background:

  • Vascular aging is a primary driver of organ system senescence and age-related diseases, including atherosclerosis and Alzheimer's.
  • Key aging indicators include increased pulse wave velocity, carotid intima-media thickening, and reduced vascular dilation.

Purpose of the Study:

  • To explore the molecular mechanisms and biomarkers associated with vascular aging.
  • To identify potential therapeutic targets for mitigating age-related vascular dysfunction and disease.

Main Methods:

  • Review of signaling pathways (mTOR, AMPK, NF-κB, Klotho, SIRT) implicated in vascular aging.
  • Analysis of biomarkers such as senescence-associated β-galactosidase, endothelial progenitor cells, microparticles, and exosomal miRNAs.

Main Results:

  • Identified key molecular pathways and biomarkers indicative of vascular aging.
  • Highlighted the role of endothelial dysfunction, oxidative stress, and mitochondrial/telomere dysfunction in the aging vasculature.

Conclusions:

  • Vascular aging research provides a foundation for developing interventions against geriatric vascular diseases.
  • Strategies focused on endothelial repair, oxidative stress reduction, and mitochondrial/telomere restoration are crucial for promoting healthy aging.

Related Concept Videos

The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
2.1K
Aging01:26

Aging

Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
39
Vascular Resistance01:20

Vascular Resistance

Vascular resistance is a critical concept in understanding blood flow dynamics in the circulatory system. It refers to the resistance that blood encounters as it flows through the blood vessels. This resistance is a key factor in determining blood pressure and cardiac workload.
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
3.6K
Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs but also impacts other areas, such as the arms, thereby impairing overall circulation and organ function.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty deposits inside the arterial...
3
Overview of the Vascular System01:20

Overview of the Vascular System

The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
2.7K
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
1.5K