甲状腺自身抗体对131I治疗青少年Graves病后甲减的影响

研究青少年Graves病(GD)患者治疗前促甲状腺激素受体抗体(TRAb)和甲状腺过氧化物酶抗体(TPOAb)水平对131I治疗后甲状腺功能减退症(甲减)发生率的影响.131I治疗青少年GD患者 264例,治疗前依TRAb和TPOAb分为TRAb阳性、阴性组及TPOAb强阳性、阳性和阴性组;依两抗体不同阳性组合分为A[...     

TRAb RRA对Graves病的诊断,治疗,预后观察的估价

Graves病是一种由促甲状腺受体抗体(TRAb)引起的自身免疫疾病。自身免疫方面的试验是甲状腺功能试验的一个重要方面。用放射受体分析法(RRA)分析人血清中TRAb活性,对诊断及预测、治疗观察、预后估计Graves病有一定价值。 对象和方法 一、对象     

血清TRAb测定对Graves病诊断和预后的评价

Graves病(GD)患者体内存在多种甲状腺自身抗体(如TRAb、TPOAb、TGAb等)[1]。在这些自身抗体中,针对TSH受体的抗体称为TRAb。TRAb对GD最具特征性,是引发GD甲状腺功能亢进的主要原因。本文检测GD患者血清TRAb定量,以探讨血清TRAb水平对GD的确切论断及预后的判断临床意义。材料与方法1研究对象GD组临床初诊为GD患者60例,女50例,男10例,年龄22～48岁。对照组60名健康体检者,女50名,男10名,年龄20～28岁。2方法标本收集与处理:取二组人清晨空腹静脉血3mL,分离血清,-20℃保存,1个月内测定。采用RIA法,仪器为DFM96型多管放射免…     

195例TGA和TMA阳性结果浅析

甲状腺微粒体抗体 (ＴＭＡ)及甲状腺球蛋白抗体 (ＴＧＡ)的测定对甲状腺自身免疫性疾病的诊断有很重要的临床意义。特别是在与Ｔ3 和Ｔ4 及促甲状腺素 (ＴＳＨ)的联合测定时 ,对甲状腺病的鉴别诊断有很重要的临床意义。我们对就诊患者中 195例ＴＧＡ和ＴＭＡ阳性的病例进行分析 ,现报告如下。材料和方法一、标本 :来自 1999年 1月～ 2 0 0 0年 6月我院门、急诊和住院病人 ,均采自肘静脉清晨空腹血。二、仪器 :国营二六二厂生产的 2 0 0 8Ｐ -γ放射免疫计数器。三、试剂 :3Ｖ公司提供的放射免疫试剂盒。四、正常参考范围 :ＴＧＡ <30 % ,Ｔ…     

Graves病早期检测TSH受体抗体的临床意义

直接作用于甲状腺细胞膜上的促甲状腺激素(TSH)受体的抗体,简称为TRAb.TRAb是一类多克隆抗体(PcAb),其中包括TSI,TFII,TGFI和TGII等.这些抗体之间存在着相对的平衡,平衡的破坏会引起临床症状的变化.Graves病是一种自身免疫性甲状腺疾病(AITD),表现为有毒性弥漫性甲状腺肿伴有临床甲亢症状.TRAb的早期检测对诊断Graves病具有重要的临床意义.     

Graves病孕妇丙基硫氧嘧啶治疗后血清TRAb动态检测的临床意义

目的:探讨Graves病孕妇服用丙基硫氧嘧啶治疗后血清TRAb以及甲状腺功能检验值的变化规律及其临床意义.方法:应用放射性受体分析和电化学发光免疫分析动态检测Graves病孕妇服用丙基硫氧嘧啶后的血清TRAb和游离三碘甲状腺原氨酸(FT3)、游离甲状腺素(FT4)、促甲状腺激素(TSH)水平.结果:孕早期Graves病...     

促甲状腺激素、甲状腺过氧化物酶抗体和促甲状腺激素受体抗体检测在甲状腺疾病中的应用价值

探讨促甲状腺激素（TSH）、甲状腺过氧化物酶抗体（TPOAb）、促甲状腺激素受体抗体（TRAb）在甲状腺疾病中的诊断价值。对44例Graves病（GD）、29例桥本甲状腺炎（HT）、13例亚甲炎患者和26例正常对照,采用电化学发光免疫分析法测定TSH、TPOAb、TRAb的含量,分析其在几组病例中的意义。三病例组的TSH、TPOAb、TRAb含量与正常对照组比均有显著差异（P〈0.01）;HT组TPOAb的测值和阳性率又显著高于GD组,而GD组TRAb的测值和阳性率都显著高于HT组,经统计学检验两者均有显著意义（P〈0.05）。结果说明,TSH是甲状腺功能的非常敏感的特异性参数,TPOAb、TRAb的检测对鉴别诊断GD和HT有着重要意义。     

血清TRAb测定在Graves'病复发中的临床意义

目的 :探讨血清促甲状腺激素受体抗体 (TRAb)水平在Graves’病复发中的改变及其临床意义。方法 :对 2 5例Graves’病复发患者 (GD复)、18例初诊Graves’病患者 (GDa)、31例经抗甲状腺药物治疗后甲状腺功能基本正常患者 (GDb)、15例单纯性甲状腺肿患者 (单肿 )、10例结节性甲状腺肿大患者 (结肿 )、18例桥本氏甲状腺炎致甲状腺功能减退患者 (桥本 )分别检测血清TRAb、TT4、TT3 、TSH、FT4、FT3 的水平。结果 :GD复 患者血清TRAb阳性率与GDa相似 ,分别为 76 0 0 %、77 78% ,均显著高于GDb组、单肿组、结肿组和桥本组 (P均<0 0 1)。结论 :血清TRAb检测有助于Graves’病复发的诊断。     

TGA、TPO-Ab、TRAb和TSH在自身免疫性甲状腺病中的临床应用

目的：探讨TGA、TPO-Ab、TRAb和TSH在自身免疫性甲状腺病中的诊断和鉴别诊断价值。方法：采用化学发光法检测80例自身免疫性甲状腺病患者（桥本甲状腺炎40例,Graves病40例）、50例甲状腺结节患者和40例正常对照者血清TGA、TPO-Ab、TRAb和TSH水平,通过ROC曲线评估最佳诊断阈值。结果：自身免疫性甲状腺病（桥本甲状腺炎和Graves病）患者与非自身免疫性甲状腺疾病（甲状腺结节）患者血清TGA、TPO-Ab的差异有统计学差异（P〈0.01）,非自身免疫性甲状腺病患者组与正常对照组比较无统计学意义（P〉0.05）。在自身免疫性甲状腺病患者中,Graves病患者TRAb水平高于桥本甲状腺炎患者（P〈0.01）,而TSH水平低于桥本甲状腺炎患者（P〈0.01）。通过ROC曲线分析,当TGA、TPO-Ab分别为70.2U/ml、105.65IU/ml时,对自身免疫性甲状腺病的诊断具有最高的灵敏度和特异性;当TRAb、TSH分别为2.25IU/ml、0.60μlU/ml时,对Graves病和桥本甲状腺炎的鉴别诊断价值最高。实验室建立的参考值与试剂盒提供的参考值比较,具有更高的特异性。结论：TGA和TPO-Ab对自身免疫性甲状腺病的诊断具有重要意义,而TRAb和TSH对鉴别诊断Graves病和桥本甲状腺炎具有重要的临床应用价值。每个实验室有必要建立自己的参考范围,为临床和病人提供更准确、有效的信息。     

自身免疫甲状腺疾病患者甲状腺自身抗体和淋巴细胞亚群临床免疫相关性比较

报告120例Graves 病(GD)和30例桥本氏甲状腺炎(HT)患者甲状腺自身抗体和淋巴细胞亚群的实验结果。GD 未治组TRAb、TMA 和TGA 阳性率分别为88.9%、61.1%和57.8%;HT 未治组阳性率分别为20.0%.80.0%和70.0%。GD 和HT 未治组CD_3~+、CD_(?)~+明显下降,CD_4~+/CD_(?)~+比值和CD_(20)~+显著上升(P<0.01)。GD 缓解组以上各指标恢复正常。GD 未治组TRAb 含量与CD_(8)~+的负相关性强于TRAb 与CD_(20)~+的正相关性。提示CD_8~+和TRAb 的测定是确定Graves 病及其治疗效果和预后的重要指标。     

2型糖尿病患者血清TGA、TPO-Ab及甲状腺激素检测的评价

目的:探讨检测2型糖尿病(DM2)患者血清TGA、TPO-Ab及甲状腺激素含量的临床意义.方法:采用化学发光免疫分析(CLIA)测定82例DM2患者血清中甲状腺球蛋白抗体(TGA)、甲状腺过氧化物酶抗体(TPO-Ab)及游离三碘甲状腺原氨酸(FT3)、游离甲状腺素(FT4)和促甲状腺素(TSH)水平.结果:与68例正常...     

TPO-Ab在甲状腺自身免疫性疾病中的应用

目的：探讨甲状腺过氧化物酶抗体（TPO-Ab）在甲状腺功能亢进（甲亢）、甲状腺功能减退（甲减）、单纯性甲状腺肿大患者的临床价值。方法：采用放射免疫分析检测甲状腺疾病患者血清TGA、TMA、TPO-Ab浓度及血清FL、FT4、TSH水平，分析TPO-Ab在69例甲亢、53例甲减及45例单纯性甲状腺肿的阳性率。结果：TPO-Ab的阳性率（82％-92．5％）明显高于同组的TGA（44．2％）、TMA（69．8％），甲减组TPO-Ab的阳性值（平均57．4％）明显高于甲亢组（31．2％）和单纯甲状腺肿组（17．6％），差异有显著意义（P〈0．01）。结诊!TPO-Ab对自身角癌件甲状腺疾病的诊断、治疗和预后评估具右一定的临床价值．     

新发Graves甲亢患者血清25(OH)D水平相关因素研究

目的 探讨新发Graves甲亢患者血清25羟-维生素D[25(OH)D]水平的相关因素.方法 收集2016年5月至10月于核医学科就诊的新发Graves甲亢患者665例,血清检测甲功、促甲状腺激素受体抗体(TRAb)、甲状腺过氧化物酶抗体(TPOAb)、甲状腺球蛋白抗体(TGAb)、甲状旁腺激素(PTH)、降钙素(CT)、钙、磷及25(OH)D,SPECT法计算甲状腺质量.根据血清25(OH)D水平分为维生素D(VitD)缺乏组、不足组和充足组,分析患者病程、年龄、FT3、FT4、TSH、TRAb、TGAb、TPOAb、钙、磷、PTH和CT与25(OH)D的关系.结果 新发Graves甲亢患者中维生素D缺乏、不足、充足率分别为47.52％、30.98％、21.50％.三组比较,患者甲状腺质量、TRAb、PTH、CT和25(OH)D差异有统计学意义(P＜0.05),其中缺乏组患者甲状腺质量更大,TRAb及PTH水平更高,25(OH)D及CT水平更低;而病程、年龄、FT3、FT4、TSH、TGAb、TPOAb、钙和磷差异无统计学意义(P＞0.05).患者25(OH)D分别与TRAb(rs=-0.414)、PTH(r =-0.175)和甲状腺质量(r=-0.094)负相关(P＜0.05),与CT(r=0.115,P=0.003)正相关.多因素Logistic回归分析发现,TRAb(OR=1.124,95％ CI 1.086 ～1.153,P＜0.001)的OR值为1.124且差异有统计学意义.ROC曲线分析发现,TRAb界值＞12.99且差异有统计学意义(P＜0.001).结论 新发Graves甲亢患者血清25(OH)D水平与TRAb及甲状腺质量呈负相关.     

TPO-Ab及TGA与淋巴细胞亚群联检在AITD中的临床价值

目的:探讨自身免疫性甲状腺疾病(AITD)发病与甲状腺自身抗体之间存在的作用关系.方法:分别采用电化学发光法(ECL)检测了甲状腺过氧化物酶抗体(TPO-Ab)水平,采用放射免疫分析检测了89例男性及81例女性AITD患者和相应正常对照组的甲状腺球蛋白抗体(TGA),并采用免疫荧光标记单克隆抗体和流式细胞仪联检T淋巴细胞亚群(CD4 /CD8 )的活性.结果:AITD患者TPO-Ab以及TGA的水平均显著高于对照组(P＜0.01),相关分析显示,抗体水平与淋巴细胞T细胞亚群(CD4 /CD8 )活性变化没有明显相关(P＞0.05).结论:甲状腺自身抗体的水平变化可作为AITD部分病因的推测和提示.     

Negative correlation between the conversion of thyrotropin receptor-bound blocking type thyrotropin receptor antibody to the stimulating type by anti-human IgG antibodies and the biological activity of blocking type thyrotropin receptor antibody.

It has been reported that receptor-bound blocking type TSH receptor antibody (TRAb) can be converted to the stimulating type by anti-human IgG antibodies. To evaluate the relationship between the conversion of receptor-bound blocking type TRAb to the stimulating type and the biological activity of blocking type TRAb, we compared converting activities of blocking type TRAb from 10 patients with primary nongoitrous hypothyroidism with both the doses of blocking type TRAb which show 50% inhibition of 125I-bTSH binding to the TSH receptor and those which show 50% inhibition of TSH-stimulated cAMP production in cultured rat thyroid cells (FRTL-5). The additions of anti-human IgG antibody to FRTL-5 cell-bound blocking IgGs resulted in the increase in cAMP production in a dose-dependent manner and the converting activities (percent increase of cAMP production) also depended on the doses of blocking IgGs. The converting activities were significantly correlated with the doses of blocking IgGs which showed 50% inhibition of 125I-bTSH binding to the TSH receptor (r = 0.71, p = 0.011). And these converting activities were also significantly correlated with the doses of blocking IgGs which showed 50% inhibition of TSH-stimulated cAMP increase (r = 0.81, p = 0.002), and were negatively correlated with thyroid stimulation blocking antibody activities (r = 0.58, p = 0.02). We have demonstrated that all cell-bound blocking type TRAb were converted to the stimulating type by anti-human IgG antibody and the degree of conversion was negatively correlated with the biological activity of blocking type TRAb.(ABSTRACT TRUNCATED AT 250 WORDS)     

Current topics on immunological laboratory tests-thyroid diseases

Current topics in the field of thyroid disease are the development of the second generation assay for TSH receptor antibody (TRAb) using recombinant human TSH receptor and the appearance of antineutrophil cytoplasmic antibodies(ANCA) in Graves' disease patients treated with propylthiouracil(PTU). This new TRAb assay is very useful, since the sensitivity and the specificity were almost 100%, respectively, in the diagnosis of Graves' disease. Furthermore, a new coated tube assay for the detection of blocking TRAb has been developed by using TSH/LH receptor chimera. The prevalence of ANCA is high in Graves' disease patients treated with PTU, but the clinical significance of ANCA is under controversy, since only a part of them develop vasculitis, and recently it has been reported that ANCA is frequently positive in Graves' disease patients before the onset of methimazole treatment. The 7th version of guidelines for the diagnosis of thyroid disease have been prepared by the Japan Thyroid Association, and opens to public inspection. They show the importance of immunological laboratory tests in this field.     

Determination and clinical significance of anti-idiotypic antibody--in model experiments of thyroglobulin and TSH]

Anti-idiotypic (anti-ID) antibody in test serum was determined by the direct binding assay using 125I-anti-human thyroglobulin (hTg). Several positive cases were found in Graves' disease and thyroiditis chronica. Positive anti-ID antibodies could be classified into two types. Type 1 showed the positive anti-hTg antibody and high Tg levels by RIA using double antibody method. Type 2 showed the positive anti-hTg antibody but low Tg levels by RIA. The binding of 125I-hTg to anti-hTg antibody was displaced by anti-ID antibody in type 1, but was not anti-ID antibody in type 2. A case of coexistence of autoantibody to hTSH and auto-anti-ID antibody to anti-hTSH antibody was found. She showed normal thyroid function (T4, T3), but TSH level showed discrepancy by different assay methods. Both autoantibodies for hTSH and for anti-hTSH antibody were demonstrated by the reaction of patient's antibody with both 125I-hTSH and 125I-anti-hTSH (MoAb). These two autoantibodies belong to the polyclonal IgG. The autoantibody for hTSH recognized only the beta-subunit of hTSH. Neither stimulating type of TSH receptor antibody (TRAb) nor blocking type of TRAb interfered with the binding of patient's anti-ID to 125I-anti-hTSH. This binding reaction could be inhibited by the unlabeled hTSH. This anti-ID might represent the internal image of the non-biological active site of TSH molecule, because of absence of thyroid stimulating activity. These anti-ID antibodies may provide evidence supporting a network theory of the immune system.