國家衛生研究院 NHRI:Item 3990099045/4112
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    题名: Calcium phosphate cement chamber as an immunoisolative device for bioartificial pancreas: in vitro and preliminary in vivo study
    作者: Yang, KC;Wu, CC;Sumi, S;Tseng, CL;Wu, YH;Kuo, TF;Lin, FH
    贡献者: Division of Medical Engineering Research
    摘要: OBJECTIVES:: This study examined a calcium phosphate cement (CPC) chamber as an immunoisolative device to facilitate the use of xenogeneic cell sources without immunosuppression for the bioartificial pancreas (BAP). METHODS:: Mouse insulinoma cells were encapsulated in agarose gel and then enclosed in a CPC chamber to create a BAP. Bioartificial pancreas were evaluated by cell viability, live-dead cell ratio, and cytokine-mediated cytotoxicity assay and implanted into the peritoneal cavity of diabetic rats. Nonfasting blood glucose and serum insulin levels were analyzed perioperatively; BAPs were also retrieved for histological examination. RESULTS:: Insulinoma cells enclosed in the CPC chamber had normal viability, cell survival, and insulin secretion that was even cultured in media with cytokines. The nonfasting blood glucose level of rats was decreased from 460 +/- 50 to 132 +/- 43 mg/dL and maintained euglycemia for 22 days; serum insulin level was increased from 0.34 +/- 0.11 to 1.43 +/- 0.30 mug/dL after operation. Histological examination revealed the fibrous tissue envelopment, and immune-related cells that competed for oxygen resulting in hypoxia could be attributed to the dysfunction of BAPs. CONCLUSIONS:: This study proved the feasibility for using a CPC chamber as an immunoisolative device for the BAP. An alternative implanted site should be considered to extend the functional longevity of BAPs in further study.
    日期: 2010-05
    關聯: Pancreas. 2010 May;39(4):444-451.
    Link to: http://dx.doi.org/10.1097/MPA.0b013e3181be2f95
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0885-3177&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000276984800004
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77951720688
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