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Related Experiment Videos

Endothelial cells and hyperthermia

L F Fajardo1, S D Prionas

  • 1Department of Pathology, Stanford University School of Medicine, CA.

International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group
|May 1, 1994
PubMed
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Clinical hyperthermia damages neoplastic cells and their blood vessels. Tumour microvasculature is more sensitive to heat, offering a therapeutic advantage for cancer treatment.

Area of Science:

  • Oncology
  • Vascular Biology
  • Biomedical Engineering

Background:

  • Clinical hyperthermia is known to affect neoplastic cells.
  • The impact of hyperthermia on tumor vasculature, including microvessels and endothelial cells (EC), is less understood.
  • Research since the 1960s has explored hyperthermia's effects on microvessels in vivo and EC in vitro.

Purpose of the Study:

  • To review the effects of hyperthermia on endothelial cells and tumor microvasculature.
  • To highlight the differential sensitivity of neoplastic versus normal tissue microvasculature to heat.
  • To explore the potential of targeting tumor vasculature with hyperthermia for cancer therapy.

Main Methods:

  • Review of in vivo and in vitro studies on hyperthermia's effects on endothelial cells (EC) and microvessels.

Related Experiment Videos

  • Analysis of data on hyperthermia-induced damage, blood flow changes, and angiogenesis inhibition.
  • Examination of sublethal EC damage, including protein synthesis alterations and cytoskeletal changes.

    • Main Results:

    • Hyperthermia can lethally damage both EC and microvessels at therapeutic doses.
    • Proliferating EC in tumor microvessels are more thermosensitive than those in normal tissues.
    • Hyperthermia inhibits angiogenesis and can cause tumor ischemia through vascular damage or obstruction.

    Conclusions:

    • Hyperthermia exerts antineoplastic effects partly through vascular damage and ischemia.
    • The enhanced sensitivity of tumor microvasculature presents a therapeutic opportunity.
    • Further strategies targeting tumor vasculature with hyperthermia warrant development.