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Brain vessels squeezed to death

机译:脑血管被挤压致死

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摘要

The human brains two billion neurons are supplied with oxygen and nutrients by a network of cerebral blood vessels that equates to around 700 kilometres in length. Most of these blood vessels are tiny capillaries surrounded by contractile supporting cells called pericytes. When a major vessel that supplies blood to the brain becomes obstructed, capillary blood flow is interrupted, and this may deplete the brains oxygen supply, causing rapid loss of neuronal function, cell death and stroke. In this issue, Hall et al. (page 55) show that pericytes have a crucial role in the normal regulation of cerebral blood flow, and that a lack of oxygen causes pericyte death and constriction of capillaries.
机译:人脑通过相当于700公里长的脑血管网络为20亿个神经元提供氧气和营养。这些血管大多数是细小的毛细血管,周围有称为周细胞的收缩性支持细胞。当向大脑供应血液的主要血管阻塞时,毛细血管的血流就会中断,这可能会耗尽大脑的氧气供应,导致神经元功能迅速丧失,细胞死亡和中风。在本期中,Hall等。 (第55页)表明,周细胞在正常调节脑血流量中起着至关重要的作用,缺氧会导致周细胞死亡和毛细血管收缩。

著录项

  • 来源
    《Nature》 |2014年第7494期|50-51|共2页
  • 作者

    DANIEL M. GREIF; ANNE EICHMANN;

  • 作者单位

    Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, Connecticut 06510, USA;

    Yale Cardiovascular Research Center, Yale University School of Medicine, New Haven, Connecticut 06510, USA,Department of Cellular and Molecular Physiology, Yale University School of Medicine, and at the Center for Interdisciplinary Research in Biology, College de France, Paris;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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