目的探讨甲状腺功能减退(甲减)和甲状腺功能亢进(甲亢)患者治疗前后摄碘率(RAIU)与甲状腺钠/碘同向转运体抗原(NIS-Ag)、甲状腺过氧化物酶(TPO)含量变化的相关性。方法选取2015年2月—2016年8月濮阳市安阳地区医院36例健康体检人员和10...目的探讨甲状腺功能减退(甲减)和甲状腺功能亢进(甲亢)患者治疗前后摄碘率(RAIU)与甲状腺钠/碘同向转运体抗原(NIS-Ag)、甲状腺过氧化物酶(TPO)含量变化的相关性。方法选取2015年2月—2016年8月濮阳市安阳地区医院36例健康体检人员和108例甲状腺疾病就诊患者做为研究对象。电化学发光法检测血清中游离三碘甲状腺素原氨酸(FT3)、游离甲状腺素原氨酸(FT4)和促甲状腺激素(TSH)含量。用甲状腺摄碘功能仪分别检测各组的3 h RAIU、24 h RAIU,用酶联免疫吸附试验测定血浆中NIS-Ag、TPO含量,比较各组别RAIU、NIS-Ag、TPO含量,并分析患者药物治疗前后RAIU与NIS-Ag、TPO相关性。结果FT3、FT4、TSH含量,除甲减摄碘率增高组和减低组之间比较无差异外,其余各组含量比较,差异有统计学意义(均P<0.05)。甲减摄碘率增高组和减低组FT3、FT4含量最低,TSH最高;甲亢组FT3、FT4含量最高,TSH最低。各组治疗前3 h RAIU、24 h RAIU、NIS-Ag及TPO含量比较,差异有统计学意义(P<0.05)。24 h RAIU、3 h RAIU、NIS-Ag及TPO在甲减甲状腺摄碘率减低组中最低,而在甲亢组中最高。各患病组3 h RAIU、24 hRAIU与NIS-Ag、TPO均呈正相关,差异有统计学意义(P<0.05),但在正常组该指标间无相关性(P>0.05)。各组治疗后24 h RAIU、3 h RAIU、NIS-Ag及TPO值均较治疗前降低,差异有统计学意义(P<0.05)。各患病组治疗后3 h RAIU、24 h RAIU与NIS-Ag、TPO均呈正相关,差异有统计学意义(P<0.05)。结论甲减患者和甲亢患者RAIU与NIS-Ag、TPO存在正相关性;药物治疗能降低RAIU、NIS-Ag及TPO。展开更多
目的通过观察海藻与甘草不同比例配伍的海藻玉壶汤对丙硫氧嘧啶造成的甲状腺肿大大鼠模型生物效应的影响,筛选出海藻与甘草配比起效的适宜条件,并对其作用机制进行初步探讨。方法将海藻与甘草按照2因素7水平的均匀设计实验原则设置不同...目的通过观察海藻与甘草不同比例配伍的海藻玉壶汤对丙硫氧嘧啶造成的甲状腺肿大大鼠模型生物效应的影响,筛选出海藻与甘草配比起效的适宜条件,并对其作用机制进行初步探讨。方法将海藻与甘草按照2因素7水平的均匀设计实验原则设置不同配伍比例的海藻玉壶汤,Wistar大鼠120只,随机分为10组,采用ig丙硫氧嘧啶14 d复制动物模型,造模后各组ig给药28 d,实验结束后测定大鼠甲状腺质量,测定血清中三碘甲腺原氨酸(T3)、四碘甲腺原氨酸(T4)、促甲状腺激素(TSH)等甲状腺激素水平,RT-PCR法测定大鼠甲状腺中甲状腺过氧化物酶(TPO)和甲状腺球蛋白(Tg)的m RNA表达。结果海藻玉壶汤中海藻与甘草不同配比在不同程度上均有调节甲状腺激素水平、改善丙硫氧嘧啶所致的甲状腺肿大作用。与模型组比较,配比5组(0.135∶8.32)较模型组TPO m RNA的表达显著升高。海藻玉壶汤配比1组(14.522∶6.24)、5组、6组(29.040∶4.16)的Tg m RNA水平较对照组显著升高。结论海藻玉壶汤中海藻与甘草不同配比在不同程度上均能抑制丙硫氧嘧啶所导致的甲状腺肿大,以配比1组、3组(19.363∶0.54)、6组表现最为明显,其作用机制可能涉及刺激TPO与Tg基因转录的增强。配比1组与配比5组具有促进这种代偿增强的作用,在某种程度上对甲状腺激素水平的恢复起到积极的作用。展开更多
Background Thyroid peroxidase (TPO) is an important autoantigen in Hashimoto's thyroiditis (HT), and almost all epitopes are located in TPO ectodomain. The glycosylation of TPO might contribute to breaking self-t...Background Thyroid peroxidase (TPO) is an important autoantigen in Hashimoto's thyroiditis (HT), and almost all epitopes are located in TPO ectodomain. The glycosylation of TPO might contribute to breaking self-tolerance, therefore, pudfied glycosylated recombinant TPO ectodomain is prerequisite of elucidating its role in the pathogenesis of HT. The aim of our study was to investigate whether the glycosylation has influence on the antigenic determinants of recombinant TPO. Methods Bac-to-Bac baculovirus expression system was used to generate recombinant human TPO ectodomain. The antigenicity was analyzed by antigen specific enzyme-linked immunosorbant assays (ELISAs). The glycosylation of recombinant human TPO ectodomain of High Five insect cell origin was detected by lectin-ELISAs. Results TPO ectodomain was recovered from the culture media as a soluble protein, and it was fused with a hexahistidine tag which allowed purification by nickel-affinity chromatography. The recombinant TPO ectodomain could be recognized by all the 54 HT patients and three TPO monoclonal antibodies. Fucose, sialic acid and galactose were all detected on the recombinant TPO ectodomain. Sera TPOAb binding decreased slightly after non-specific deglycosylation of TPO by periodic acid. Conclusions High Five insect cells derived recombinant human TPO ectodomain had N-glycosylation sites, which might have little effect on recognition by serum TPOAb.展开更多
文摘目的探讨甲状腺功能减退(甲减)和甲状腺功能亢进(甲亢)患者治疗前后摄碘率(RAIU)与甲状腺钠/碘同向转运体抗原(NIS-Ag)、甲状腺过氧化物酶(TPO)含量变化的相关性。方法选取2015年2月—2016年8月濮阳市安阳地区医院36例健康体检人员和108例甲状腺疾病就诊患者做为研究对象。电化学发光法检测血清中游离三碘甲状腺素原氨酸(FT3)、游离甲状腺素原氨酸(FT4)和促甲状腺激素(TSH)含量。用甲状腺摄碘功能仪分别检测各组的3 h RAIU、24 h RAIU,用酶联免疫吸附试验测定血浆中NIS-Ag、TPO含量,比较各组别RAIU、NIS-Ag、TPO含量,并分析患者药物治疗前后RAIU与NIS-Ag、TPO相关性。结果FT3、FT4、TSH含量,除甲减摄碘率增高组和减低组之间比较无差异外,其余各组含量比较,差异有统计学意义(均P<0.05)。甲减摄碘率增高组和减低组FT3、FT4含量最低,TSH最高;甲亢组FT3、FT4含量最高,TSH最低。各组治疗前3 h RAIU、24 h RAIU、NIS-Ag及TPO含量比较,差异有统计学意义(P<0.05)。24 h RAIU、3 h RAIU、NIS-Ag及TPO在甲减甲状腺摄碘率减低组中最低,而在甲亢组中最高。各患病组3 h RAIU、24 hRAIU与NIS-Ag、TPO均呈正相关,差异有统计学意义(P<0.05),但在正常组该指标间无相关性(P>0.05)。各组治疗后24 h RAIU、3 h RAIU、NIS-Ag及TPO值均较治疗前降低,差异有统计学意义(P<0.05)。各患病组治疗后3 h RAIU、24 h RAIU与NIS-Ag、TPO均呈正相关,差异有统计学意义(P<0.05)。结论甲减患者和甲亢患者RAIU与NIS-Ag、TPO存在正相关性;药物治疗能降低RAIU、NIS-Ag及TPO。
文摘目的通过观察海藻与甘草不同比例配伍的海藻玉壶汤对丙硫氧嘧啶造成的甲状腺肿大大鼠模型生物效应的影响,筛选出海藻与甘草配比起效的适宜条件,并对其作用机制进行初步探讨。方法将海藻与甘草按照2因素7水平的均匀设计实验原则设置不同配伍比例的海藻玉壶汤,Wistar大鼠120只,随机分为10组,采用ig丙硫氧嘧啶14 d复制动物模型,造模后各组ig给药28 d,实验结束后测定大鼠甲状腺质量,测定血清中三碘甲腺原氨酸(T3)、四碘甲腺原氨酸(T4)、促甲状腺激素(TSH)等甲状腺激素水平,RT-PCR法测定大鼠甲状腺中甲状腺过氧化物酶(TPO)和甲状腺球蛋白(Tg)的m RNA表达。结果海藻玉壶汤中海藻与甘草不同配比在不同程度上均有调节甲状腺激素水平、改善丙硫氧嘧啶所致的甲状腺肿大作用。与模型组比较,配比5组(0.135∶8.32)较模型组TPO m RNA的表达显著升高。海藻玉壶汤配比1组(14.522∶6.24)、5组、6组(29.040∶4.16)的Tg m RNA水平较对照组显著升高。结论海藻玉壶汤中海藻与甘草不同配比在不同程度上均能抑制丙硫氧嘧啶所导致的甲状腺肿大,以配比1组、3组(19.363∶0.54)、6组表现最为明显,其作用机制可能涉及刺激TPO与Tg基因转录的增强。配比1组与配比5组具有促进这种代偿增强的作用,在某种程度上对甲状腺激素水平的恢复起到积极的作用。
文摘Background Thyroid peroxidase (TPO) is an important autoantigen in Hashimoto's thyroiditis (HT), and almost all epitopes are located in TPO ectodomain. The glycosylation of TPO might contribute to breaking self-tolerance, therefore, pudfied glycosylated recombinant TPO ectodomain is prerequisite of elucidating its role in the pathogenesis of HT. The aim of our study was to investigate whether the glycosylation has influence on the antigenic determinants of recombinant TPO. Methods Bac-to-Bac baculovirus expression system was used to generate recombinant human TPO ectodomain. The antigenicity was analyzed by antigen specific enzyme-linked immunosorbant assays (ELISAs). The glycosylation of recombinant human TPO ectodomain of High Five insect cell origin was detected by lectin-ELISAs. Results TPO ectodomain was recovered from the culture media as a soluble protein, and it was fused with a hexahistidine tag which allowed purification by nickel-affinity chromatography. The recombinant TPO ectodomain could be recognized by all the 54 HT patients and three TPO monoclonal antibodies. Fucose, sialic acid and galactose were all detected on the recombinant TPO ectodomain. Sera TPOAb binding decreased slightly after non-specific deglycosylation of TPO by periodic acid. Conclusions High Five insect cells derived recombinant human TPO ectodomain had N-glycosylation sites, which might have little effect on recognition by serum TPOAb.