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Regulation of Stroke Volume01:27

Regulation of Stroke Volume

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The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
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Cardiac output (CO) is an integral aspect of human physiology, reflecting the heart's efficiency and responsiveness to the body's needs. It represents the volume of blood that the left or right ventricle ejects into the aorta or pulmonary trunk each minute. The CO is calculated by multiplying the heart rate (HR)—the number of heartbeats per minute—by the stroke volume (SV)—the amount of blood pumped out with each heartbeat.
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Cells are the smallest and basic units of life, whether it is a single cell that forms the entire organism, e.g., in a bacterium or trillions of them, e.g., in humans. No matter what organism a cell is a part of, they share specific characteristics.
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Induction of Endothelial Differentiation in Cardiac Progenitor Cells Under Low Serum Conditions
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Revascularization and endothelial progenitor cells in stroke.

Gema Esquiva1, Alba Grayston1, Anna Rosell1

  • 1Neurovascular Research Laboratory and Neurology Department, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona , Barcelona , Spain.

American Journal of Physiology. Cell Physiology
|August 23, 2018
PubMed
Summary

Endothelial progenitor cells (EPCs) aid brain recovery after stroke by promoting new blood vessel growth and repair. This review explores how EPCs

Keywords:
angiogenesisendothelial progenitor cellsneurogenesissecretomestroke

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Area of Science:

  • Neuroscience
  • Regenerative Medicine
  • Vascular Biology

Background:

  • Stroke remains a leading cause of death and disability globally.
  • Advances in acute stroke care have improved survival but neurological deficits persist.
  • Neurorehabilitation is the primary therapy for post-stroke recovery, necessitating new treatment strategies.

Purpose of the Study:

  • To review the neuroreparative functions of endothelial progenitor cells (EPCs) in stroke recovery.
  • To elucidate the paracrine signaling mechanisms employed by EPCs.
  • To highlight the role of EPC secretome and extracellular vesicles in neurorepair.

Main Methods:

  • Review of preclinical and clinical studies on EPCs in stroke models.
  • Analysis of EPC mobilization, differentiation, and function post-ischemia.
  • Investigation of paracrine factors and extracellular vesicles secreted by EPCs.

Main Results:

  • EPCs are crucial for angiogenesis and vascular remodeling in the ischemic brain.
  • Circulating EPC levels are altered following stroke.
  • EPC-derived secretome and extracellular vesicles mediate neuroprotective and pro-regenerative effects.

Conclusions:

  • EPCs hold significant therapeutic potential for stroke neurorepair.
  • Targeting EPC paracrine signaling offers a promising avenue for novel stroke treatments.
  • Further research into EPC-derived factors is warranted to optimize neurorehabilitation strategies.