目的观察一种新型HLA衍生肽(RDP1258)的体内免疫抑制功能并探讨其机制。方法人工固相合成HLA衍生肽(RDP1258),以3H-TdR法观察其在体内对大鼠脾细胞增殖反应的影响;与HO-1酶活性激动剂HEM IN及拮抗剂ZNPP相对比,采用酶化学法及免疫组化...目的观察一种新型HLA衍生肽(RDP1258)的体内免疫抑制功能并探讨其机制。方法人工固相合成HLA衍生肽(RDP1258),以3H-TdR法观察其在体内对大鼠脾细胞增殖反应的影响;与HO-1酶活性激动剂HEM IN及拮抗剂ZNPP相对比,采用酶化学法及免疫组化方法观察其对体内脾细胞血红素氧合酶-1(hem e oxygenase-1,HO-1)活性的影响。结果RDP1258体内应用可显著抑制淋巴细胞转化及MLR的增殖反应;该肽能够明显提高体内HO-1活性,并增强HO-1的表达。结论RDP1258体内应用能够显著抑制大鼠脾细胞由丝裂原或同种抗原引起的增殖反应,这种作用可能是通过影响HO-1活性而达到的。展开更多
To investigate the effects of RDP1258 on survival of rat cardiac allograft.Methods RDP1258 was synthesized and the model of rat heart abdominal transplantation was established.Animals were divided into four groups.Gro...To investigate the effects of RDP1258 on survival of rat cardiac allograft.Methods RDP1258 was synthesized and the model of rat heart abdominal transplantation was established.Animals were divided into four groups.Group 1 received no immunosuppression.Group 2 received CsA alone.Group 3 received RDP1258 alone.Group 4 received RDP1258 and subtherapeutic CsA.In all cases RDP1258 was administrated intraperitoneally and CsA was gavaged.Light and electron microscopic examinations were taken.Transplanted hearts were monitored daily by direct palpation.Results The purity of synthesized RDP1258 was over 95% and the molecular weight was in accord with theoretical value.The histology and the ultrastructure changed little in grafts in group 3 and group 4.Survival of rat cardiac allograft was significantly prolonged in group 4.Conclusion RDP1258 can suppress acute rejection.Perioperative administration of RDP1258 in combination with CsA can significantly prolong survival of rat cardiac allograft.15 refs.展开更多
文摘目的观察一种新型HLA衍生肽(RDP1258)的体内免疫抑制功能并探讨其机制。方法人工固相合成HLA衍生肽(RDP1258),以3H-TdR法观察其在体内对大鼠脾细胞增殖反应的影响;与HO-1酶活性激动剂HEM IN及拮抗剂ZNPP相对比,采用酶化学法及免疫组化方法观察其对体内脾细胞血红素氧合酶-1(hem e oxygenase-1,HO-1)活性的影响。结果RDP1258体内应用可显著抑制淋巴细胞转化及MLR的增殖反应;该肽能够明显提高体内HO-1活性,并增强HO-1的表达。结论RDP1258体内应用能够显著抑制大鼠脾细胞由丝裂原或同种抗原引起的增殖反应,这种作用可能是通过影响HO-1活性而达到的。
文摘To investigate the effects of RDP1258 on survival of rat cardiac allograft.Methods RDP1258 was synthesized and the model of rat heart abdominal transplantation was established.Animals were divided into four groups.Group 1 received no immunosuppression.Group 2 received CsA alone.Group 3 received RDP1258 alone.Group 4 received RDP1258 and subtherapeutic CsA.In all cases RDP1258 was administrated intraperitoneally and CsA was gavaged.Light and electron microscopic examinations were taken.Transplanted hearts were monitored daily by direct palpation.Results The purity of synthesized RDP1258 was over 95% and the molecular weight was in accord with theoretical value.The histology and the ultrastructure changed little in grafts in group 3 and group 4.Survival of rat cardiac allograft was significantly prolonged in group 4.Conclusion RDP1258 can suppress acute rejection.Perioperative administration of RDP1258 in combination with CsA can significantly prolong survival of rat cardiac allograft.15 refs.