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Purpose: Acute fulminant hepatic failure (FHF) is associated with high mortality. Recent studies

have shown that a liver support system based on viable hepatocytes can prolong life in animal

models of FHF and also in some FHF patients who were successfully bridged to liver

transplantation. To be applied in humans, the bioartificial liver (BAL) system should have

sufficient liver cell mass to provide adequate bioactive support. The most widely investigated

bioreactor at present is based on hollow fiber membrane. However, it is difficult to build a scaledup

module of this model. We devised a fluidized-bed bioreactor that is packed with isolated

porcine hepatocytes, and these hepatcytes are immobilized in Ca-alginate hydrogel.

Methods: We isolated fresh porcine hepatocytes using a 2-step collagenase perfusion method,

and they were suspended in 1.5% alginate solution. Through a drop-generator, this mixture was

gelled in 135mM Cacl2. The resulting spherical beads (mean size: 500 m) were embedded in a

module. An average of 2x1010 hepatocytes were present in the module. The efficacy of our

design was tested in pigs that had undergone total hepatic devascularization and portocaval

shunt.

Results: The BAL-treated group showed a significantly lower ammonium build-up rate

compared to the control group (598.6 344.2 g/dl vs 1937.6?44.1 g/dl, respectively, at 8

hours after connecting to BAL). In addition, the intracranial pressure was well controlled in the

BAL-treated group, whereas the control group showed a progressive increase of the intracranial

pressure (16.9 1mmH2O vs 21.9?.6mmH2O, respectively, at 8 hours after connecting to BAL).

Conclusion: Our bioartificial liver system is a fluidized-bed bioreactor packed with immobilized

porcine hepatocytes, and it seems to be a more effective scaled-up module.

권호기사

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
간내결석의 진단과 치료법의 선택 김진홍 pp.1-9

간내담관결석의 내과적 치료 심찬섭 pp.10-16

간내담석의 내과적 치료 김명환 ;김지영 pp.17-23

간내결석증의 외과적 치료경험 임창섭 ;장진영 ;김선회 pp.24-33

간내 결석의 외과적 치료 최새별 ;김경식 pp.34-40

돼지 간세포를 이용한 체외 순환형 생인공간 개발 황윤진 ;김종열 ;장수근 ;김상걸 ;김양일 ;황정현 pp.41-45

백서의 간이식 모델에서 문맥 협착 및 혈전 예방을 위한 문맥 문합법 윤명희 pp.46-50

응급 간이식이 요구되는 전격성 간부전 환자들에게서 bispectral index monitoring을 이용한 이식 전후 의식상태의 지속적인 평가의 유용성 박정익 ;황 신 ;이승규 ;황규삼 ;김기훈 ;안철수 ;문덕복 ;하태용 ;송기원 ;정 pp.51-57

급성 괴저성 담낭염의 CT 소견 설영훈 ;송인상 pp.58-63

담낭암 환자의 임상양상 및 예후 분석 김세준 ;김동구 pp.64-74

형광 동소 보합법을 이용한 췌장암의 세포유전학적 변화에 대한 분석과 그 임상적 의의 윤유석 ;이동순 ;민현정 ;장진영 ;이승은 ;황대욱 ;한호성 ;김선회 pp.75-85

조기 위암으로 위 아전절제 후 발생한 담도암 2 예 박선미 ;류동희 ;이옥준 ;성로현 ;배일헌 ;최재운 pp.86-90

참고문헌 (14건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 Acute and subacute fulminant hepatic failure: the role of liver transplantation. 네이버 미소장
2 Liver transplantation for fulminant hepatic failure. 네이버 미소장
3 Guguen-Guillouzo C, Guillouzo A: Les Editions INSERM, John Libbey Eurotext 1 1986 미소장
4 The Hepatix extracorporeal liver assist device: initial clinical experience. 네이버 미소장
5 Gastroenterology 네이버 미소장
6 Li AP, Colburn SM, Beck DJ. A simplified methods for the culturing of primary adult rat and human hepatocytes as multicellular spheroids. In Vitro Cell. Dev. Biol. 1992; 28A:673-677. 미소장
7 Use of hepatocytes in adhesion and suspension cultures for liver support bioreactors. 네이버 미소장
8 Correction of bilirubin conjugation in the Gunn rat using hepatocytes immobilized in alginate gel beads as an extracorporeal bioartificial liver. 네이버 미소장
9 Synthesis and secretion of protein by hepatocytes entrapped within calcium alginate. 네이버 미소장
10 Fremond B, Joly A, Desille M, et al. Cell-based therapy of acute liver failure: the extracorporeal bioartificial liver. Cell biology and Toxicology 1996;12:325-329 미소장
11 Gastroenterology, research, and the American Gastroenterological Association: Today's investigation, tomorrow's practice 네이버 미소장
12 Development of bioartificial liver system using a fluidized-bed bioreactor 네이버 미소장
13 Liver functions in hepatocytes entrapped within calcium alginate. 네이버 미소장
14 Enzymatic function of alginate immobilized rat hepatocytes. 네이버 미소장