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An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
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Vascular Aging in Ischemic Stroke.

Lian Liu1, Bo Zhao1, Yueyang Yu2

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Cellular senescence drives vascular aging and increases ischemic stroke risk in older adults. Understanding these mechanisms is key to preventing stroke in high-risk populations.

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endothelial dysfunctionischemic strokevascular agingvascular remodeling

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Area of Science:

  • Gerontology
  • Cardiovascular Biology
  • Neurology

Background:

  • Cellular senescence, a state of irreversible cell cycle arrest, contributes to aging.
  • Vascular aging involves endothelial dysfunction and remodeling, increasing disease risk.
  • Ischemic stroke (IS) risk is elevated in older individuals, with aging mechanisms not fully elucidated.

Purpose of the Study:

  • To review the impact of vascular aging on ischemic stroke susceptibility and pathology.
  • To highlight the roles of endothelial dysfunction and vascular remodeling in aging-related IS.
  • To enhance understanding of vascular aging and IS pathogenesis for at-risk older adults.

Main Methods:

  • Literature review analyzing the relationship between cellular senescence, vascular aging, and ischemic stroke.
  • Emphasis on the influence of oxidative stress and inflammation on vascular changes.
  • Synthesis of current research on the mechanisms linking vascular aging to IS.

Main Results:

  • Vascular aging, driven by cellular senescence, exacerbates IS pathology.
  • Endothelial dysfunction and vascular remodeling are key detrimental factors.
  • Oxidative stress and inflammation significantly contribute to vascular aging and IS.

Conclusions:

  • Cellular senescence is a critical driver of vascular aging and IS risk.
  • Targeting mechanisms of vascular aging may offer new avenues for IS prevention.
  • Further research is needed to fully understand and mitigate IS in aging populations.