AIM: To determine whether normal genetically immunocompetent rodent hosts could be manipulated to accept human hepatocyte transplants with long term survival without immunosuppression. METHODS: Tolerance towards human...AIM: To determine whether normal genetically immunocompetent rodent hosts could be manipulated to accept human hepatocyte transplants with long term survival without immunosuppression. METHODS: Tolerance towards human hepatocytes was established by injection of primary human hepatocytes or Huh7 human hepatoma cells into the peritoneal cavities of fetal rats. Corresponding cells were subsequently transplanted into newborn rats via intrasplenic injection within 24h after birth. RESULTS: Mixed lymphocyte assays showed that spleen cells from non-tolerized rats were stimulated to proliferate when exposed to human hepatocytes, while cells from tolerized rats were not. Injections made between 15 d and 17 d of gestation produced optimal tolerization. Transplanted human hepatocytes in rat livers were visualized by immunohistochemical staining of human albumin. By dot blotting of genomic DNA in livers of tolerized rats 16 weeks after hepatocyte transplantation, it was found that approximately 2.5 X 10(5) human hepatocytes survived per rat liver. Human albumin mRNA was detected in rat livers by RT-PCR for 15 wk, and human albumin protein was also detectable in rat serum. CONCLUSION: Tolerization of an immuno-competent rat can permit transplantation, and survival of functional human hepatocytes.展开更多
目的研究不同术式对直肠癌患者治疗后免疫功能的影响以及术后发生感染的风险。方法本研究尊重患者意愿根据前瞻性非随机研究对80例直肠癌患者分别给予开腹手术治疗(开腹组,n=40)和腹腔镜手术治疗(腹腔镜组,n=40)。比较两组患者术后发生...目的研究不同术式对直肠癌患者治疗后免疫功能的影响以及术后发生感染的风险。方法本研究尊重患者意愿根据前瞻性非随机研究对80例直肠癌患者分别给予开腹手术治疗(开腹组,n=40)和腹腔镜手术治疗(腹腔镜组,n=40)。比较两组患者术后发生感染的情况以及术后免疫功能改变情况。结果腹腔镜组患者感染发生率低于开腹组(P<0.05),且术后3 d T淋巴细胞比例差值(ΔT细胞)、自然杀伤(natural killer,NK)细胞比例差值(ΔNK细胞)与C反应蛋白(C-reactive protein,CRP)水平差值(ΔCRP)均优于开腹组(均P<0.01)。结论腹腔镜手术治疗直肠癌患者创伤小,术后发生感染的概率与应激反应较低,患者术后免疫功能恢复较快,是一种安全的治疗手段。展开更多
目的观察甘露聚糖肽序贯联合奥沙利铂和多西他赛对卵巢癌患者免疫功能及生存质量的影响。方法选择72例卵巢癌患者,按数字表法随机分成观察组(36例)和对照组(36例)。观察组应用甘露聚糖肽+奥沙利铂+多西他赛,对照组应用胸腺肽+奥沙利铂+...目的观察甘露聚糖肽序贯联合奥沙利铂和多西他赛对卵巢癌患者免疫功能及生存质量的影响。方法选择72例卵巢癌患者,按数字表法随机分成观察组(36例)和对照组(36例)。观察组应用甘露聚糖肽+奥沙利铂+多西他赛,对照组应用胸腺肽+奥沙利铂+多西他赛。21 d为1个周期。化疗6个周期后评价其免疫指标、近期疗效、不良反应及生存质量。结果化疗6个周期后,观察组患者的免疫指标白细胞分化抗原(cluster of differentiation,CD)3^+、CD4^+、CD4^+/CD8^+、自然杀伤细胞(natural killer,NK)细胞、IgA、IgG和C3水平均高于对照组(均P<0.05),CD8^+水平低于对照组(P<0.05)。治疗1年后,观察组的疗效优于对照组(Z=2.194,P=0.028);观察组生存质量优于对照组(Z=2.145,P=0.032),化疗相关不良反应(血液毒性、胃肠道反应、肝肾毒性和脱发)少于对照组(均P<0.05)。结论甘露聚糖肽序贯联合奥沙利铂和多西他赛治疗卵巢癌,能增强患者免疫功能,提高疗效,减少化疗不良反应,改善生存质量。展开更多
文摘AIM: To determine whether normal genetically immunocompetent rodent hosts could be manipulated to accept human hepatocyte transplants with long term survival without immunosuppression. METHODS: Tolerance towards human hepatocytes was established by injection of primary human hepatocytes or Huh7 human hepatoma cells into the peritoneal cavities of fetal rats. Corresponding cells were subsequently transplanted into newborn rats via intrasplenic injection within 24h after birth. RESULTS: Mixed lymphocyte assays showed that spleen cells from non-tolerized rats were stimulated to proliferate when exposed to human hepatocytes, while cells from tolerized rats were not. Injections made between 15 d and 17 d of gestation produced optimal tolerization. Transplanted human hepatocytes in rat livers were visualized by immunohistochemical staining of human albumin. By dot blotting of genomic DNA in livers of tolerized rats 16 weeks after hepatocyte transplantation, it was found that approximately 2.5 X 10(5) human hepatocytes survived per rat liver. Human albumin mRNA was detected in rat livers by RT-PCR for 15 wk, and human albumin protein was also detectable in rat serum. CONCLUSION: Tolerization of an immuno-competent rat can permit transplantation, and survival of functional human hepatocytes.
文摘目的研究不同术式对直肠癌患者治疗后免疫功能的影响以及术后发生感染的风险。方法本研究尊重患者意愿根据前瞻性非随机研究对80例直肠癌患者分别给予开腹手术治疗(开腹组,n=40)和腹腔镜手术治疗(腹腔镜组,n=40)。比较两组患者术后发生感染的情况以及术后免疫功能改变情况。结果腹腔镜组患者感染发生率低于开腹组(P<0.05),且术后3 d T淋巴细胞比例差值(ΔT细胞)、自然杀伤(natural killer,NK)细胞比例差值(ΔNK细胞)与C反应蛋白(C-reactive protein,CRP)水平差值(ΔCRP)均优于开腹组(均P<0.01)。结论腹腔镜手术治疗直肠癌患者创伤小,术后发生感染的概率与应激反应较低,患者术后免疫功能恢复较快,是一种安全的治疗手段。
文摘目的观察甘露聚糖肽序贯联合奥沙利铂和多西他赛对卵巢癌患者免疫功能及生存质量的影响。方法选择72例卵巢癌患者,按数字表法随机分成观察组(36例)和对照组(36例)。观察组应用甘露聚糖肽+奥沙利铂+多西他赛,对照组应用胸腺肽+奥沙利铂+多西他赛。21 d为1个周期。化疗6个周期后评价其免疫指标、近期疗效、不良反应及生存质量。结果化疗6个周期后,观察组患者的免疫指标白细胞分化抗原(cluster of differentiation,CD)3^+、CD4^+、CD4^+/CD8^+、自然杀伤细胞(natural killer,NK)细胞、IgA、IgG和C3水平均高于对照组(均P<0.05),CD8^+水平低于对照组(P<0.05)。治疗1年后,观察组的疗效优于对照组(Z=2.194,P=0.028);观察组生存质量优于对照组(Z=2.145,P=0.032),化疗相关不良反应(血液毒性、胃肠道反应、肝肾毒性和脱发)少于对照组(均P<0.05)。结论甘露聚糖肽序贯联合奥沙利铂和多西他赛治疗卵巢癌,能增强患者免疫功能,提高疗效,减少化疗不良反应,改善生存质量。