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Related Experiment Video

Updated: Jul 25, 2026

Generation of Alginate Microspheres for Biomedical Applications
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Generation of Alginate Microspheres for Biomedical Applications

Published on: August 12, 2012

Embolization with cellulose porous beads, I: An experimental study

J Hamada1, Y Ushio, K Kazekawa

  • 1Department of Neurosurgery, Kumamoto University Medical School, Japan.

AJNR. American Journal of Neuroradiology
|November 1, 1996
PubMed
Summary

Cellulose porous beads (CPBs) effectively and permanently occluded blood vessels in a canine model. This study demonstrated CPBs as a safe and viable embolic material for vascular occlusion, paving the way for clinical trials.

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Area of Science:

  • Biomaterials Science
  • Vascular Surgery
  • Interventional Radiology

Background:

  • Vascular occlusion is a critical procedure in various medical interventions.
  • Development of safe and effective embolic materials is ongoing.
  • Cellulose porous beads (CPBs) are a novel material for investigation.

Purpose of the Study:

  • To evaluate the efficacy and safety of cellulose porous beads (CPBs) as a permanent solid embolic material for vascular occlusion.
  • To assess the long-term effects of CPBs in occluding blood vessels.

Main Methods:

  • Unilateral renal arteries of 12 mongrel dogs were embolized using CPBs.
  • Serial renal angiograms were performed immediately and at 1, 4, and 12 weeks post-embolization.
  • Kidneys were harvested at different time points for histological examination.

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Last Updated: Jul 25, 2026

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Main Results:

  • CPBs were easily delivered via microcatheter and visualized with radiodensity.
  • Complete occlusion of renal arteries was achieved, with particles aggregating in vessels of similar diameter.
  • Histological analysis revealed no vessel wall disruption, hemorrhage, or significant inflammation.

Conclusions:

  • CPBs demonstrated ease of use, effective distal delivery, and homogeneous, permanent vascular occlusion.
  • The material showed no adverse inflammatory effects, supporting its potential as an embolic agent.
  • Positive experimental results prompted a transition to a clinical trial for CPBs.