Development of a hybrid artificial liver using a polyurethane foam/ hepatocyte-spheroid packed-bed module

H. Ijima, K. Nakazawa, S. Koyama, M. Kaneko, T. Matsushita, T. Gion, K. Shirabe, M. Shimada, K. Takenaka, K. Sugimachi, K. Funatsu

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Primary dog hepatocytes spontaneously formed spheroids in the pores of polyurethane foam (PUF) within 1-2 days of stationary culture. The spheroids, about 100-150 μm in diameter, partly attached to the surface and immobilized inside these pores. The lidocaine disappearance rate decreased to about 4 μg/105 viable cells/day for 10 days, while in the PUF/spheroid culture the rate was maintained at almost the initial level of 8 μg/105 viable cells/day for 10 days. Then, two scales of PUF packed-bed modules were designed. A small module (PUF volume; 14.5 cm3) was used for in vitro culture to investigate optimum culture conditions, and a large module (PUF volume; 300 cm3) was designed for dog experiments. Hepatocytes inoculated in these modules also formed spheroids and maintained almost the same activity of albumin secretion rate (111 μg/cm3 PUF/day in the small module and 87.7 μg/cm3 PUF/day in the large module). These results indicate that the PUF packed-bed module containing hepatocyte-spheroids is promising as a hybrid artificial liver.

Original languageEnglish
Pages (from-to)389-397
Number of pages9
JournalInternational Journal of Artificial Organs
Issue number6
Publication statusPublished - Jun 2000

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Bioengineering
  • Biomaterials
  • Biomedical Engineering


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