聚丙烯酰胺水凝胶毒副作用的实验研究

目的 通过动物实验探讨聚丙烯醇胺水凝胶应用于人体的安全性。方法 应用琼脂覆盖法和MTT法评价其对细胞的毒性。将聚丙烯酰胺水凝胶注入SD鼠皮下，定期取材，行大体及组织学观察。结果 两种方法测得的细胞毒性均在2级以上；注射局部轻度组织学反应，仅形成菲薄的包膜，其形态和位置不稳定，不能完全回抽，质地逐渐变硬；对鼠肾脏有一定的毒性反应。结论 聚丙烯酰胺水凝胶对细胞及肾脏有不同程度的毒副作用，作为软组织填充剂应用于临床应取审慎的态度。

Experimental study on the toxic effects of hydrophilic polyacrylamide gel

Objective\ To study the safety of Hydrophilic polyacrylamide gel (HPAG) through an animal experiment. Methods\ After HPAG was injected underneath the skin of SD rats, tissue specimens were taken for general and histological examinations. The cytotoxicity was evaluated by agar coverage and MTT method. Results\ It was determined that the cytotoxicity was over level two. The toxicity to kidney was obvious. The local histological reaction was slight and a thin fibrous membrane was formed around HPAG, which became stiff gradually. The shape and location of the injected HPAG was not stable. The HPAG could not be drawn out completely. Conclusion\ HPAG has obvious cytotoxicity and is not a suitable material as soft tissue implant for the bad shape and texture.