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Titolo:
PERMEABILITY AND BIOCOMPATIBILITY OF A NEW HYDROGEL USED FOR ENCAPSULATION OF HEPATOCYTES
Autore:
HONIGER J; BALLADUR P; MARIANI P; CALMUS Y; VAUBOURDOLLE M; DELELO R; CAPEAU J; NORDLINGER B;
Indirizzi:
HOP ST ANTOINE,CTR CHIRURG DIGEST,DEPT SURG,184 RUE FAUBOURG ST ANTOINE F-75012 PARIS FRANCE HOP ST ANTOINE,CTR CHIRURG DIGEST,DEPT SURG F-75012 PARIS FRANCE HOP ST ANTOINE,INSERM,RES UNIT 402 F-75012 PARIS FRANCE
Titolo Testata:
Biomaterials
fascicolo: 10, volume: 16, anno: 1995,
pagine: 753 - 759
SICI:
0142-9612(1995)16:10<753:PABOAN>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICROCARRIER-ATTACHED HEPATOCYTES; RAT HEPATOCYTES; LIVER-FUNCTION; MICROENCAPSULATED HEPATOCYTES; CULTURED-HEPATOCYTES; TRANSPLANTATION; SUPPORT; GUNN;
Keywords:
HEPATOCYTES; CELL TRANSPLANTATION; ENCAPSULATION; MACROCAPSULES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
J. Honiger et al., "PERMEABILITY AND BIOCOMPATIBILITY OF A NEW HYDROGEL USED FOR ENCAPSULATION OF HEPATOCYTES", Biomaterials, 16(10), 1995, pp. 753-759

Abstract

A new high-water-content (83%) and highly permeable anionic polyelectrolyte hydrogel was obtained by phase inversion of a polymer solution containing 6% polyacrylonitrile-sodium methallylsulphonate, 91% dimethylsulphoxide and 3% physiological saline solution. Hydrogel-based hollow fibres (HFs) were fabricated with a co-extrusion apparatus in collaboration with Hospal (France). HFs have an internal diameter of 800 mum and a wall thickness of 100 mu m. Experimental results demonstratedthat hydrogel-based HFs were permeable to albumin (mel, wt 69 000) and human immunoglobulin G (150 000), but were impermeable to immunoglobulins A (170 000) and M (900 000) after 24h of diffusion. In vitro, the viability of isolated rat hepatocytes injected into the HFs was 64 +/- 6% after 10d versus 30 +/- 5% for hepatocytes cultured in Petri dishes (P = 0.0001). Under these conditions, the amount of albumin released by encapsulated hepatocytes was 12 +/- 3 mu g/24h/10(6) cells at day 10, whereas at that time no albumin was released by hepatocytes cultured in Petri dishes. In vivo, histological study of hydrogel HFs implanted up to 6 wk in the peritoneum of rats revealed a low inflammatorytissue reaction without giant multinucleate cells in the foreign tissue, which decreased after the third week. The survival rate of encapsulated hepatocytes was over 85% 45d after transplantation in the peritoneum of syngeneic Lewis rats. Therefore, this hydrogel demonstrates highly favourable properties for encapsulation of hepatocytes with regard to its biocompatibility, permeability and ability to maintain hepatocytes in a functional state for prolonged periods.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/21 alle ore 15:21:41