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Mechanotransduction and Vascular Remodeling

  • Nicolaas Westerhof
  • Nikolaos Stergiopulos
  • Mark I. M. Noble
  • Berend E. Westerhof
Chapter

Abstract

Blood vessels respond to pressure and flow, more exactly to hoop stress and wall shear. In the short term, a pressure increase results in a smooth muscle contraction and thus in a diameter decrease, so that hoop stress normalizes (myogenic response, see Chap. 19). A flow increase implies an increase in wall shear stress, which is sensed by the endothelium (glycokalix). The endothelium liberates smooth muscle dilators (e.g., NO), and an increase in diameter results which reduces the wall shear stress: Flow Mediated Dilation. In the long term, a sustained high blood pressure implies a high wall hoop stress leading to wall thickening (hypertrophy), and normalization of hoop stress. Increased flow gives increased wall shear stress and leads to increase in vessel diameter. In general, vascular remodeling leads, within limits, to a restoration to control levels of hoop stress and wall shear stress.

Keywords

Zero stress state Classification of remodeling Glycokalix Myogenic response Flow mediated dilation 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Nicolaas Westerhof
    • 1
  • Nikolaos Stergiopulos
    • 2
  • Mark I. M. Noble
    • 3
  • Berend E. Westerhof
    • 1
  1. 1.Department of Pulmonary Diseases, Amsterdam Cardiovascular SciencesVU University Medical CenterAmsterdamThe Netherlands
  2. 2.Laboratory of Hemodynamics and Cardiovascular TechnologyEcole Polytechnique Fédérale de Lausanne (EPFL), Institute of BioengineeringLausanneSwitzerland
  3. 3.Cardiovascular Medicine, Department of Medicine and TherapeuticsUniversity of AberdeenAberdeenUnited Kingdom

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