{
  "id": 16801229,
  "title": "How our blood vessels age from within",
  "url": "https://urgent.news/2026/10/27/how-our-blood-vessels-age-from-within",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-27T21:20:09.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-10-blood-vessels-age.html"
  },
  "original_language": "en",
  "account": "Blood vessels play a critical role in delivering oxygen and nutrients throughout the body, thanks to a network of specialized cells called endothelial cells. However, as we age, these cells can become dysfunctional, leading to cardiovascular disease. Little is known about the molecular changes that occur within endothelial cells during aging. Researchers Laura de Rooij and Sarah Dobner set out to address this knowledge gap by analyzing data from 34 existing studies, covering over 375,000 cells from 290 samples across 12 human tissues. This analysis, published in Nature Aging, generated the Human Aging Endothelial Cell Atlas. The study found that endothelial aging varies across different tissues, with reduced vessel formation in older individuals and increased activity of inflammatory and senescence genes. Additionally, endothelial cells from older donors showed increased expression of genes related to mechanical signaling, such as the YAP protein. The researchers also identified a group of genes associated with p21, a protein linked to cellular senescence, further supporting a connection between aging and cellular senescence. While the study provides valuable insights into vascular aging, it has limitations, such as comparing individuals of different ages rather than following them over time. Nonetheless, the atlas opens new avenues for understanding the complex nature of vascular aging and potential interventions to maintain vascular health.",
  "summary": "With every heartbeat, blood is pumped through a vast network of vessels throughout our body, delivering vital oxygen, nutrients and other essential substances to even its most remote corners. But these vessels are far more than passive tubes: Their inner walls are covered by a thin layer of specialized cells called endothelial cells, which regulate blood flow, control what passes into surrounding…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}