摘要
采用培养的人胚肺成纤维细胞（ＨＥＬ）和鼠Ｌ９２９ 细胞分析比较商业用生物心瓣材料保存在甲醛防霉液和Ｈａｎｋ＇ｓ 液中的细胞毒性。并计算浸泡前和浸泡１０、２０、３０ ｄ 周期中不同保存方式材料的细胞增殖抑制指数（ＣＰＩＩ），结果显示：（１）商业用生物心瓣材料保存在甲醛和Ｈａｎｋ＇ｓ 液中均有明显的细胞毒性，随浸泡时间延长材料的细胞毒性逐渐降低。浸泡３０ ｄ 材料的ＣＰＩＩ仍高达１９％ ～２６％ ，提示浸泡减毒效果不佳；（２）ＨＥＬ细胞敏感地反映材料的细胞毒性，但对毒性作用较弱的材料而言ＨＥＬ与Ｌ９２９的细胞毒性敏感性并无明显区别；（３）甲醛有明显的原发性细胞毒性，随浸泡时间延长其细胞毒性迅速减弱。作者认为，商业用生物心瓣材料具有显著长期的细胞毒性，生物材料细胞毒性试验使用人成纤维细胞更为敏感与准确。
This study compared the cytotoxicities of bioprosthetic heart valve materials crosslinked by glutaraldehyde, stored in 4% formaldehyde or Hank's solution. Human embryonic pulmonary fibroblasts or L 929 cell culture in vitro were used. Cell proliferative inhibiton index(CPⅡ) was calculated for bioprosthetic heart valve materials using different store methods in different rinse periods(before, 10 days, 20 days, 30days).The results demonstrate:(1)bioprosthetic heart valve materials stored in 4% formaldehyde or in Hank's solution both have significant cytotoxicity, and the longer the rinse time continues, the lower the cytotoxicity declines; (2) HEL cell is more sensitive than L 929 cell in detecting the cytotoxicity of toxic biomaterials but for weak toxic biomaterials the two cell lines are not significanth different; (3) formatldehyde solution increases the cytotoxicity of biomaterials stored in it, but the enhanced cytotoxicity can be easily relieved by rinse. The authors conclude that bioprosthetic heart valve materials have long term significant cytotoxicity and the biomaterial cytotoxicity test using human fibroblasts is more sensitive and precise than other tests.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
1999年第3期271-274,294,共5页
Journal of Biomedical Engineering
基金
国家自然科学基金
关键词
生物心脏瓣膜
细胞毒性
保存液
Bioprosthetic heart valve materials Cytotoxicity
