We report two cases of solitary mediastinal lymph node recurrence after colon cancer resection. Both cases had para-aortic lymph node metastasis at the time of initial surgery and received adjuvant chemotherapy for 4 ...
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We report two cases of solitary mediastinal lymph node recurrence after colon cancer resection. Both cases had para-aortic lymph node metastasis at the time of initial surgery and received adjuvant chemotherapy for 4 years in case 1 and 18 mo in case 2. The time to recurrence was more than 8 years in both cases. After resection of the recurrent tumor, the patient is doing well with no recurrence for 6 years in case 1 and 4 mo in case 2. Patients should be followed up after colon cancer surgery considering the possibility of solitary mediastinal lymph node recurrence if they had para-aortic node metastasis at the time of initial surgery.
目的应用大鼠原位肝脏移植模型,研究自体吞噬(自噬)如何参与缺血再灌注损伤后肝细胞死亡过程。方法在肝脏UW保存液中4°C保存24h后行大鼠同种原位肝脏移植;渥曼青霉素治疗组(WM-G)为UW保存液中添加渥曼青霉素(100 n M),对照组(UW-G)为U...
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目的应用大鼠原位肝脏移植模型,研究自体吞噬(自噬)如何参与缺血再灌注损伤后肝细胞死亡过程。方法在肝脏UW保存液中4°C保存24h后行大鼠同种原位肝脏移植;渥曼青霉素治疗组(WM-G)为UW保存液中添加渥曼青霉素(100 n M),对照组(UW-G)为UW治疗组:大鼠原位肝移植后观察受体生存率,分别于肝移植后15、30、60及120min检测血液血清谷草转氨酶(AST)及谷丙转氨酶(ALT),肝脏标本行光学显微镜及透射电子显微镜组织形态学分析,免疫印迹方法进行自噬标记分子LC3定量。结果移植15min后,UW-G细胞质中含有大量吞噬小体和吞噬溶酶体的小团肝细胞自肝细胞索分离,分离的肝细胞堵塞肝窦内皮间隙从而引起移植2h后大面积的肝细胞坏死,坏死的肝细胞中包含非活化半胱氨酸天冬氨酸酶-3及非活化半胱氨酸天冬氨酸酶-7的调亡染色阳性核;自体吞噬标志性蛋白LC3-II的表达各组都逐渐增加,移植30min后达到高峰,WM-G可明显提高肝移植受体存活率,明显降低AST及ALT,WM-G移植15min后肝细胞中LC3-II的表达低于UW-G;超微结构显示移植15min后WM-G肝细胞中早期自体吞噬性液泡(AVi)、晚期自体吞噬性液泡(AVd)、自噬溶酶体/溶酶体(包括致密体)的比例明显低于UW-G(P<0.01)。结论自噬参与了肝脏冷缺血再灌注损伤过程,抑制自噬可降低肝移植术后冷缺血再灌注损伤。
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