选择素在大鼠同种异体皮肤移植皮片的表达

目的通过检测选择素P、选择素E在同种异体大鼠皮肤移植后免疫排斥反应中的表达,研究组织工程皮肤的组织相容性.方法取SD大鼠皮肤和实验室培养的组织工程SD大鼠皮肤移植于成年Wistar大鼠,移植成功后取不同时间点标本用免疫组织化学方法检测选择素P、选择素E在组织中的表达.结果同种异体皮肤移植组,选择素P、选择素E有显著表达,组织工程皮肤移植后,局部组织中水平显著低于同种异体皮肤移植组.结论选择素P、选择素E的改变与同种异体皮肤移植后的免疫排斥反应呈正相关,组织工程皮肤只具有很弱的免疫原性,不引起显著的排斥反应.

Expression of selectin E and P in skin allograft in rats

Objective To study the histocompatibility of tissue engineered skin with the observation of the effects of selectins E and P on the immunological rejection after skin allograft in rats. Methods Tissue engineered skin was prepared as follows: The materials obtained from the neonatal SD rats were cultured and then grafted onto the adult Wistar rats. The expression of selectins E and P in the grafted skin was determined with immunohistochemical staining. Results The expression of selectins E and P was significantly higher in the rats with allograft than in the rats with the grafts of tissue-engineered material. Conclusion Selectins E and P play an important role in the immunological rejection after allograft of skin but the tissue-engineered skin graft possesses favorable histocompatibility and shows no obvious immunological rejection.