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Related Concept Videos

Mechanism of Angiogenesis01:10

Mechanism of Angiogenesis

Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Inflammatory Response I: Vascular and Cellular01:30

Inflammatory Response I: Vascular and Cellular

The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...

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Related Experiment Video

Updated: Jul 4, 2026

Modified In Vivo Matrix Gel Plug Assay for Angiogenesis Studies
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Angiogenesis in vasculitides.

N Maruotti1, F P Cantatore, B Nico

  • 1Department of Rheumatology, University of Foggia Medical School, Foggia, Italy.

Clinical and Experimental Rheumatology
|June 27, 2008
PubMed
Summary

Inflammatory vasculitides cause blood vessel narrowing, leading to tissue damage. New blood vessel growth (angiogenesis) may be a response to this damage but can also worsen inflammation.

Area of Science:

  • Vascular Biology
  • Immunology
  • Pathology

Background:

  • Vasculitides are inflammatory blood vessel diseases causing lumen narrowing and tissue ischemia.
  • Key pathological features include myointimal proliferation, fibrosis, and thrombus formation.
  • Hypoxia resulting from vascular occlusion is a critical factor in disease progression.

Purpose of the Study:

  • To explore the role of angiogenesis in vasculitis.
  • To understand the dual nature of angiogenesis as both a compensatory mechanism and an inflammatory stimulus.

Main Methods:

  • Review of existing literature on vasculitis and angiogenesis.
  • Analysis of cellular and molecular mechanisms involved in vascular inflammation and repair.

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Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells
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Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells

Published on: November 23, 2014

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Last Updated: Jul 4, 2026

Modified In Vivo Matrix Gel Plug Assay for Angiogenesis Studies
09:03

Modified In Vivo Matrix Gel Plug Assay for Angiogenesis Studies

Published on: June 30, 2023

The Arteriovenous (AV) Loop in a Small Animal Model to Study Angiogenesis and Vascularized Tissue Engineering
08:53

The Arteriovenous (AV) Loop in a Small Animal Model to Study Angiogenesis and Vascularized Tissue Engineering

Published on: November 2, 2016

Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells
09:03

Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells

Published on: November 23, 2014

Main Results:

  • Hypoxia in vasculitis triggers angiogenesis, a process of new blood vessel formation.
  • Newly formed vessels in vasculitis can exacerbate inflammation by expressing adhesion molecules and releasing inflammatory mediators.
  • Angiogenesis may represent a complex interplay between tissue repair and ongoing inflammatory processes.

Conclusions:

  • Angiogenesis plays a significant role in the pathophysiology of vasculitis.
  • The inflammatory potential of newly formed vessels contributes to disease perpetuation.
  • Targeting angiogenesis could be a therapeutic strategy for vasculitis.