A device for adsorbing unbound, unconjugated bilirubin and its effects in vitro and in a hyperbilirubinemic newborn piglet

Keishi Miwa, Kazuhiro Misumi, Kaoru Shimada, Noriaki Miyoshi, Takehiro Inoue, Yoshihiro Kawabe, Kazuhiro Moriyama, Satoshi Ibara, Tsuyomu Ikenoue, Hiroshi Sakamoto

研究成果: ジャーナルへの寄稿学術論文査読

抄録

Aims: A novel blood purification material that we previously reported as a superantigen- and cytokine-adsorbing device (SCAD) was evaluated for its ability to adsorb unbound, unconjugated bilirubin (UUBil) in vitro and in vivo. Methods: In albumin-containing buffer, UUBil was dissolved and circulated through the SCAD column. Also, bilirubin was infused into low-body weight newborn piglets and hemoperfused for 3 h over SCAD columns. Results: In albumin-containing buffer, concentration of bilirubin decreased from 34 to 0.6 mg/dL within 5 h and the SCAD fiber turned brown, indicating that bilirubin was adsorbed onto the surface of the adsorbent and was not degraded during the circulation. Using the hyperbilirubinemia swine, clearances of total bilirubin (TBil), direct bilirubin (DBil), and indirect bilirubin (IdBil) were significantly higher (P<0.01) in the SCAD group compared with the control group. The clearances of TBil, DBil, and IdBil at 3 h after the initiation of the bilirubin infusion were 0.47, 0.53, and 0.45 mL/min, respectively, at a blood flow rate of 2.5 mL/min, and this result indicates that almost 20% of bilirubins were adsorbed to the SCAD column in a single passage. Conclusion: These results provide initial evidence that SCAD treatment is effective in the removal of UUBil and can be performed safely in newborn animals.

本文言語英語
ページ(範囲)232-235
ページ数4
ジャーナルJournal of Perinatal Medicine
35
3
DOI
出版ステータス出版済み - 01-06-2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • 小児科学、周産期医学および子どもの健康
  • 産婦人科学

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