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吡格列酮治疗β1肾上腺素能受体自身抗体诱导的大鼠室性心律失常的作用和电生理机制研究
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作者 喜林强 孙华鑫 +9 位作者 商鲁翔 王倩辉 宋洁 杨娜 张兴 迪拉热·太外库力 曼则热姆·热杰普 张玲 汤宝鹏 周贤惠 《中国循环杂志》 CSCD 北大核心 2024年第7期716-724,共9页
目的:探讨吡格列酮对β1肾上腺素能受体自身抗体(β1AAb)诱导的大鼠室性心律失常治疗作用及电生理机制。方法:将48只SD大鼠按随机数字表法等分为四组:对照组(佐剂注射)、β1AAb组[β1肾上腺素能受体细胞外第二环功能表位肽段(β1AR-ECL... 目的:探讨吡格列酮对β1肾上腺素能受体自身抗体(β1AAb)诱导的大鼠室性心律失常治疗作用及电生理机制。方法:将48只SD大鼠按随机数字表法等分为四组:对照组(佐剂注射)、β1AAb组[β1肾上腺素能受体细胞外第二环功能表位肽段(β1AR-ECLⅡ)配以佐剂背部多点注射进行主动免疫,2 mg/(kg·次)]、吡格列酮组[与β1AAb组同等主动免疫8周后,吡格列酮灌胃2周,4 mg/(kg·d)]、过氧化物酶体增殖物激活受体-γ特异性抑制剂GW9662组[与β1AAb组同等主动免疫8周后吡格列酮灌胃+GW9662腹腔注射2周,其中吡格列酮予以4 mg/(kg·d),GW9662予以1 mg/(kg·d)]。每2周Powerlab多通道生理仪记录心电图,取血。基线和第10周记录超声心动图,10周后进行心电生理、组织病理、免疫组化染色及电镜检查。结果:相较于对照组,β1AAb组室性心律失常诱发率较高、心室有效不应期(VERP)缩短、激动-恢复间期(ARI)延长;左心室射血分数(LVEF)和左心室短轴缩短率(LVFS)低;葡萄糖转运蛋白1(GLUT1)和肉碱棕榈酰转移酶1a(CPT1a)阳性染色面积占比较低;线粒体形态异常及网络损伤明显,P均<0.05。而吡格列酮组较β1AAb组,室性心律失常诱发率降低、VERP延长、ARI缩短;LVEF和LVFS恢复;GLUT1和CPT1a阳性染色面积占比增加;线粒体形态异常及网络损伤改善,P均<0.05。GW9662组较吡格列酮组室性心律失常诱发率较高、VERP缩短、ARI延长;LVEF和LVFS较低;GLUT1和CPT1a阳性染色面积占比低;线粒体形态异常及网络损伤未恢复,P均<0.05。结论:吡格列酮可降低β1AAb诱导的室性心律失常,改善心室电传导和激动恢复时间异质性;并可在组织病理水平缓解β1AAb所致心室重塑,并伴随心室肌糖脂转运通道蛋白的上调和受损线粒体网络的修复。 展开更多
关键词 吡格列酮 过氧化物酶体增殖物激活受体 室性心律失常 β1肾上腺素能受体自身抗体 线粒体
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BRAF、TP53、Pax8-PPARγ在甲状腺癌中的表达及疗效预测价值
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作者 苏镇军 赵艳春 +2 位作者 李娟 国方娜 温丽莎 《国际检验医学杂志》 CAS 2024年第5期598-602,607,共6页
目的探讨肿瘤蛋白P53(TP53)、丝氨酸/苏氨酸蛋白激酶(BRAF)、配对盒基因8-过氧化物酶体增殖物激活受体γ(Pax8-PPARγ)在甲状腺癌中的表达及疗效预测价值。方法将2020年4月至2022年4月该院收治的150例甲状腺癌患者纳入研究。检测患者甲... 目的探讨肿瘤蛋白P53(TP53)、丝氨酸/苏氨酸蛋白激酶(BRAF)、配对盒基因8-过氧化物酶体增殖物激活受体γ(Pax8-PPARγ)在甲状腺癌中的表达及疗效预测价值。方法将2020年4月至2022年4月该院收治的150例甲状腺癌患者纳入研究。检测患者甲状腺癌组织及癌旁组织中TP53、BRAF、Pax8-PPARγmRNA的表达水平,分析其与临床病理因素的关系,基于受试者工作特征(ROC)曲线及决策曲线分析TP53、BRAF、Pax8-PPARγmRNA表达水平预测^(131)I治疗效果的价值。结果甲状腺癌组织中的TP53、BRAF、Pax8-PPARγmRNA表达水平高于癌旁组织(P<0.05)。甲状腺癌患者淋巴结转移、肿瘤最大径、包膜浸润与TP53、BRAF、Pax8-PPARγmRNA表达水平有关(P<0.05)。采用放射性^(131)I清除术后残留的甲状腺组织(简称清甲)失败患者组织TP53、BRAF、Pax8-PPARγmRNA表达水平均高于清甲成功患者(P<0.05)。ROC曲线分析显示,TP53、BRAF、Pax8-PPARγmRNA联合预测甲状腺癌患者清甲失败的曲线下面积优于三者单独预测(P<0.05)。决策曲线显示,三者联合预测甲状腺癌清甲失败发生的净收益率优于单一预测(P<0.05)。结论TP53、BRAF、Pax8-PPARγ在甲状腺癌组织中呈高表达,联合检测有助于预测^(131)I治疗效果,为临床确定合理治疗方案及时机提供参考。 展开更多
关键词 甲状腺癌 配对盒基因8-过氧化物酶体增殖物激活受体γ 丝氨酸/苏氨酸蛋白激酶 肿瘤蛋白P53 ^(131)I治疗
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鲈PPARγ基因的克隆、组织表达及其抗体制备 被引量:6
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作者 钱云霞 杨孙孝 +2 位作者 梁洪 钱伦 钱凯先 《水产学报》 CAS CSCD 北大核心 2010年第8期1156-1164,共9页
根据GenBank上其他物种的PPARγ基因序列设计兼并引物,从鲈肝脏cDNA中扩增得到鲈PPARγ基因cDNA序列1588bp,分析表明该基因的开放阅读框为1569bp,编码522个氨基酸,理论等电点6.06,分子量59.02ku。将鲈PPARγ氨基酸序列比对后发现与欧洲... 根据GenBank上其他物种的PPARγ基因序列设计兼并引物,从鲈肝脏cDNA中扩增得到鲈PPARγ基因cDNA序列1588bp,分析表明该基因的开放阅读框为1569bp,编码522个氨基酸,理论等电点6.06,分子量59.02ku。将鲈PPARγ氨基酸序列比对后发现与欧洲鲈同源性最高,为93.1%;与金头鲷的同源性为92.3%,与人同源性也达到为61.8%。用RT-PCR分析该基因组织表达模式,结果表明,鲈PPARγ主要分布于肝脏、鳃和脂肪组织。将鲈PPARγ开放阅读框1569bp序列克隆至原核表达载体pET-28a(+)构成pET-28a-PPARγ1569重组体,并转化大肠杆菌BL21(DE3),以终浓度1mmol/L的IPTG对其进行诱导表达4h,SDS-PAGE电泳分析表明,pET-28a-PPARγ1569菌株在66ku处有1条特异的蛋白带,Western-blotting检测表明该蛋白为鲈PPARγ融合蛋白。用镍离子亲和柱纯化的鲈PPARγ融合蛋白免疫小鼠得到其多克隆抗体。用间接ELISA法检测鲈PPARγ抗体的抗体效价约为1∶16000。实验结果为进一步研究鲈PPARγ蛋白的生物学特性及功能奠定了基础。 展开更多
关键词 过氧化物酶体增殖剂激活受体γ 组织表达 抗体
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GST-PPARγC1原核表达载体的构建、表达及抗GST-PPARγC1多克隆抗体的制备 被引量:3
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作者 张燕 薛耀明 +1 位作者 郭爱林 张文敏 《第一军医大学学报》 CSCD 北大核心 2005年第5期558-561,共4页
目的在大肠杆菌中表达过氧化物酶体增殖物激活受体γ共激活因子-1(PPARγC1)与谷胱甘肽-S转移酶(GST)的融合蛋白,并制备抗PPARγC1的多克隆抗体。方法从肝癌细胞系HepG2提取总RNA,用RT-PCR扩增出PPARγC1cDNA的编码序列,克隆入表达载体p... 目的在大肠杆菌中表达过氧化物酶体增殖物激活受体γ共激活因子-1(PPARγC1)与谷胱甘肽-S转移酶(GST)的融合蛋白,并制备抗PPARγC1的多克隆抗体。方法从肝癌细胞系HepG2提取总RNA,用RT-PCR扩增出PPARγC1cDNA的编码序列,克隆入表达载体pGEX-4T-1中,重组载体在酶切鉴定后,在大肠杆菌中经IPTG诱导表达获得GST-PPARγC1蛋白,SDS-PAGE分析表达产物。通过亲和层吸法纯化表达的GST-PPARγC1融合蛋白,并以此为抗原制备多克隆抗体。Westernblotting检测重组抗原的免疫活性。结果经测序、酶切鉴定证明,PPARγC1基因已正确插入到pGEX-4T-1中,经IPTG诱导后,表达出相对分子量为44000的融合蛋白。Westernblotting鉴定所制备的多克隆抗体可以与PPARγC1特异性结合。结论PPARγC1片段在大肠杆菌中的成功表达及制备得到的多克隆抗体,为检测PPARγC1及其在其他组织中的表达提供了一种检测途径。 展开更多
关键词 过氧化物酶体增殖物激活受体γ共激活因子-1(PPARγC1) 大肠杆菌 表达 多克隆抗体
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Hashimoto's encephalopathy presenting as acute cognitive decline in an elderly male 被引量:1
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作者 Madan Raj Aryal Smith Giri +1 位作者 Naba Raj Mainali Karen Smith 《World Journal of Neurology》 2013年第1期1-3,共3页
Hashimoto’s encephalopathy(HE)is a rare form of reversible encephalopathy characterized by the presence of anti-thyroid antibodies in serum and/or cerebrospinal fl uid.The syndrome is more common in women and the pre... Hashimoto’s encephalopathy(HE)is a rare form of reversible encephalopathy characterized by the presence of anti-thyroid antibodies in serum and/or cerebrospinal fl uid.The syndrome is more common in women and the presentation varies considerably.Here,we report a case of an elderly male with a history of Hashimoto’s thyroiditis,presenting with acute cognitive decline.A diagnosis of HE was established based on the presence of antithyroid antibodies in the serum,diffuse electroencephalography changes and lack of an alternative explanation.The patient promptly responded to steroids and was discharged on the 8th day of admission.We suggest that an assessment of thyroid antibodies should be included in anyone presenting with acute cognitive decline in the absence of alternative explanation. 展开更多
关键词 Hashimoto’s ENCEPHALOPATHY Hashimoto’s THYROIDITIS anti-thyroid antibodies ELECTROENCEPHALOGRAPHY STEROIDS Cognitive DECLINE IMMUNOSUPPRESSANTS
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Clinical effect of methimazole combined with selenium in the treatment of toxic diffuse goiter in children
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作者 Xiao-Hong Zhang Gao-Pin Yuan Ting-Li Chen 《World Journal of Clinical Cases》 SCIE 2022年第4期1190-1197,共8页
BACKGROUND The incidence of toxic diffuse goiter(Graves’disease)is higher in adolescents and preschool-aged children,with an upward trend.The incidence at 6–13 years of age is approximately 11.0%,and the incidences ... BACKGROUND The incidence of toxic diffuse goiter(Graves’disease)is higher in adolescents and preschool-aged children,with an upward trend.The incidence at 6–13 years of age is approximately 11.0%,and the incidences in men and women are 7.8%and 14.3%,respectively.AIM To explore the clinical effect of methimazole combined with selenium in the treatment of toxic diffuse goiter(Graves’disease)in children and its effect on serum anti-thyroglobulin antibody(TRAb)and anti-thyroid peroxidase antibody(TPOAb).METHODS A total of 103 children with Graves’disease treated in our hospital from January 2018 to June 2021 were divided into a traditional group and a combined group(15-20 mg methimazole orally given to children)and a combined group(50μg selenium added on the basis of traditional treatment)according to different treatment methods to explore the therapeutic effects of the two methods and to observe the changes in thyroid volume and serum TRAb,TPOAb,free thyroxine(FT4)and inflammatory factor levels before and after treatment.The time taken for FT4 to return to normal was compared between the two groups.RESULTS Treatment was significantly more effective in the combined group than in the traditional group(P<0.05).The thyroid volumes of the children in the two groups was measured before and after treatment.Thyroid volume decreased significantly after treatment in both groups,and the thyroid volume was significantly lower in the combined group than in the traditional group(P<0.05).The serum levels of interleukin-6(IL-6),IL-8,TRAb,TPOAb and FT4 in the two groups were detected before and after treatment.The levels of IL-6,IL-8,TRAb,TPOAb and FT4 were significantly lower in the combined group than in the traditional group(P<0.05).Follow-up of the children in the two groups showed that compared with the traditional group,it took less time for children in the combined group to return to the normal level(P<0.05).CONCLUSION Methimazole combined with selenium can effectively treat Graves’disease in children,reduce the expression of TRAb,TPOAb,FT4 and inflammatory factors,and improve the curative effect.Thus,the combined treatment warrants further clinical research. 展开更多
关键词 METHIMAZOLE SELENIUM CHILDREN Antithyroid globulin anti-thyroid peroxidase antibody
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促甲状腺激素及抗甲状腺过氧化物酶抗体孕前检测的意义 被引量:2
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作者 李雯翀 朱咏瑶 +2 位作者 刘枘岢 何淑贞 蔡茵瑜 《广州医科大学学报》 2021年第3期56-59,共4页
目的:探究促甲状腺激素(TSH)及抗甲状腺过氧化物酶抗体(TPOAb)检测在育龄妇女优生优育中的价值。方法:选取在东莞市松山湖中心医院孕检的育龄期妇女1887名作为研究对象,检测TSH、TPOAb水平。结果:1887名育龄期妇女中,TSH水平异常率为143... 目的:探究促甲状腺激素(TSH)及抗甲状腺过氧化物酶抗体(TPOAb)检测在育龄妇女优生优育中的价值。方法:选取在东莞市松山湖中心医院孕检的育龄期妇女1887名作为研究对象,检测TSH、TPOAb水平。结果:1887名育龄期妇女中,TSH水平异常率为143/1887(7.6%),其中40~45岁TSH异常率高于20~29岁及30岁~39岁(P<0.05);BMI偏低的育龄期妇女TSH异常率低于BMI偏高育龄期妇女(P<0.05);TSH异常的育龄期妇女中TPOAb阳性检出率高于TSH正常的育龄期妇女(P<0.05)。结论:40~45岁、BMI偏高或偏低的育龄期妇女,孕前应注重TSH、TPOAb筛查,及早发现诊断甲状腺功能异常,以降低妊娠风险。 展开更多
关键词 促甲状腺激素 抗甲状腺过氧化物酶抗体 育龄
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A case of Hashimoto's encephalopathy presenting with seizures and cognitive impairment 被引量:1
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作者 Xing-Yong Chen Yin-Zhou Wang +1 位作者 Hui-Xin Lei Xu Zhang 《Neuroimmunology and Neuroinflammation》 2016年第1期117-119,共3页
Hashimoto's encephalopathy(HE)is a rare disease with unknown pathogenesis.An epileptic seizure is reported in association with HE.Here,the author reported an 18-year-old girl with a history of hyperthyroidism for ... Hashimoto's encephalopathy(HE)is a rare disease with unknown pathogenesis.An epileptic seizure is reported in association with HE.Here,the author reported an 18-year-old girl with a history of hyperthyroidism for one year.She was admitted to the hospital due to status epilepticus.Serum thyroid function test showed that the concentration of anti-thyroid peroxidase antibodies and thyroglobulin antibody were significantly elevated.Brain magnetic resonance imaging showed that multiple abnormalities varied from bilateral frontal,parietal,occipital-temporal lobe to cerebellum hemisphere.The patient’s symptoms were significantly relieved after methylprednisolone therapy.At 3-month follow-up visits,she had been symptom free.HE is a diagnosis of exclusion and should be considered when evaluating a patient with cognitive dysfunction and high titers of anti-thyroid antibodies as it responds dramatically to steroids. 展开更多
关键词 Hashimoto’s encephalopathy anti-thyroid antibodies steroid responsive encephalopathy
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