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Area of Science:

  • Vascular biology
  • Regenerative medicine
  • Peripheral artery disease research

Background:

  • Collateral arteries are vital for tissue survival in peripheral artery disease (PAD).
  • Understanding collateral artery development is crucial but challenging.
  • The inferior gluteal artery's role in PAD is under investigation.

Purpose of the Study:

  • To investigate the developmental origin and function of collateral arteries in peripheral artery disease.
  • To identify potential therapeutic targets for enhancing collateral circulation.

Main Methods:

  • Utilized micro-X-ray computed tomography and confocal microscopy for visualization.
  • Employed a murine hind-limb ischemia model to study vascular development.
  • Conducted a retrospective observational study on patients with peripheral artery disease.

Main Results:

  • Observed significant vascular volume increase in the ischemic leg of mice.
  • Identified the inferior gluteal artery as a major collateral source, originating from an embryonic remnant.
  • Found significant dilatation of the inferior gluteal artery on the ischemic side in PAD patients.

Conclusions:

  • Embryonic remnant arteries can serve as collateral sources under ischemic conditions.
  • The inferior gluteal artery's potential as a therapeutic target for PAD warrants further investigation.