细粒棘球绦虫(中国大陆株)亲肌肉抗原重组蛋白的免疫保护性研究

目的探讨细粒棘球蚴(Echinococcus granulosus,Eg)亲肌肉抗原重组蛋白的免疫保护性及其作为候选疫苗的潜在价值。方法ICR小鼠随机分为蛋白免疫组和佐剂对照组,每隔2w皮下免疫1次,在第3次免疫后2周,用Eg原头蚴进行攻击感染,感染后20w剖杀小鼠,检获棘球蚴包囊,计算免疫保护力,并用ELISA法测定血清中IgG及其亚型和IgE水平。结果与佐剂对照组比较,蛋白免疫组小鼠的免疫保护力为94.46%;与免疫前比较,免疫后和攻击感染后蛋白免疫组小鼠血清IgG、IgG1、IgG3和IgE水平均明显升高(P<0.05),IgG2b降低(P<0.05)。结论细粒棘球绦虫亲肌肉抗原重组蛋白能诱导小鼠产生一定的保护性免疫,是潜在的疫苗候选抗原分子。     

应用抗细粒棘球绦虫Ag5和AgB的单克隆抗体分析带绦虫抗原

细粒棘球绦虫是最重要的带绦虫之一。其它带绦虫与细粒棘球绦虫一样,其幼虫阶段常感染相同的宿主,以致免疫学上常常难与细粒棘球绦虫区分。自在细粒棘球绦虫囊液中鉴定出抗原5(Ag5)和抗原B(AgB)以来,人畜包虫病诊断的特异性已大有改进,但由于在感染多房棘球绦虫、伏氏绦虫(E.vogeti)和猪囊尾蚴的病人血清中以及感染水泡绦虫、羊绦虫的     

细粒棘球绦虫重组亲肌肉抗原ZW-15免疫小鼠LncRNA 031520表达的研究北大核心CSCD

目的探讨长链非编码RNA031520(LncRNA 031520)分子在细粒棘球绦虫重组亲肌肉抗原ZW-15诱导小鼠免疫保护的表达分析。方法36只雌性BALB/c小鼠分为PBS对照组、弗氏佐剂组和ZW-15免疫组,12只/组。PBS对照组、弗氏佐剂组分别皮下多点注射PBS溶液和完全/不完全弗氏佐剂100μl/只,ZW-15免疫组注射重组抗原100μl/只(10μg/只)。弗氏佐剂组和ZW-15免疫组初次免疫使用完全弗氏佐剂,加强免疫使用不完全弗氏佐剂。共免疫3次,初次免疫后的2次加强免疫间隔时间为两周。免疫小鼠经麻醉取血,分离血清。采用ELISA法检测特异IgG、IgG1、IgG2a、IgG2b抗体水平。无菌取脾脏,分离淋巴细胞采用流式细胞术分选CD4^(+)T淋巴细胞、CD8^(+)T淋巴细胞及B淋巴细胞群;利用qRT-PCR检测CD4^(+)T淋巴细胞、CD8^(+)T淋巴细胞、B淋巴细胞及总淋巴细胞中LncRNA 031520及内参GAPDH的表达;利用流式细胞术检测脾脏CD4^(+)T淋巴细胞中IFN-γ、IL-4的表达。使用SPSS 17.0统计软件和Graphpad Prism 8.0绘图软件对实验数据进行统计分析。结果小鼠经亲肌肉重组抗原ZW-15免疫后血清特异IgG、IgG1、IgG2a及IgG2b抗体水平均升高,且均显著高于PBS组、弗氏佐剂对照组,差异均有统计学意义(P<0.001)。LncRNA 031520在ZW-15免疫组CD4^(+)T淋巴细胞、总淋巴细胞中相对表达量显著高于PBS对照组和弗氏佐剂对照组(P<0.01),在ZW-15免疫组B淋巴细胞及CD8^(+)T淋巴细胞中相对表达量与PBS对照组及弗氏佐剂对照组相比差异均无统计学意义(均P>0.05)。免疫组小鼠脾脏淋巴细胞Th1亚群标志分子IFN-γ表达量为(19.07±3.44)%,显著高于PBS对照组(8.03±2.67)%和弗氏佐剂对照组(9.37±1.25)%(P<0.05),Th2亚群标志分子IL-4表达量为(0.79±0.02)%,显著高于PBS对照组(0.44±0.13)%和弗氏佐剂对照组(0.50±0.15)%(P<0.05)。结论LncRNA 031520在细粒棘球绦虫重组亲肌肉抗原ZW-15免疫小鼠淋巴细胞中表达上调,可能在亲肌肉抗原抵御细粒棘球蚴感染中发挥免疫保护作用。     

细粒棘球绦虫重组亲肌肉抗原ZW-15免疫小鼠LncRNA 031520表达的研究

目的探讨长链非编码RNA031520(LncRNA 031520)分子在细粒棘球绦虫重组亲肌肉抗原ZW-15诱导小鼠免疫保护的表达分析。方法 36只雌性BALB/c小鼠分为PBS对照组、弗氏佐剂组和ZW-15免疫组,12只/组。PBS对照组、弗氏佐剂组分别皮下多点注射PBS溶液和完全/不完全弗氏佐剂100μl/只,ZW-15免疫组注射重组抗原100μl/只(10μg/只)。弗氏佐剂组和ZW-15免疫组初次免疫使用完全弗氏佐剂,加强免疫使用不完全弗氏佐剂。共免疫3次,初次免疫后的2次加强免疫间隔时间为两周。免疫小鼠经麻醉取血,分离血清。采用ELISA法检测特异IgG、IgG1、IgG2a、IgG2b抗体水平。无菌取脾脏,分离淋巴细胞采用流式细胞术分选CD4~+T淋巴细胞、CD8~+T淋巴细胞及B淋巴细胞群;利用qRT-PCR检测CD4~+T淋巴细胞、CD8~+T淋巴细胞、B淋巴细胞及总淋巴细胞中LncRNA 031520及内参GAPDH的表达;利用流式细胞术检测脾脏CD4~+T淋巴细胞中IFN-γ、IL-4的表达。使用SPSS 17.0统计软件和Graphpad Prism 8.0绘图软件对实验数据进行统计分析。结果小鼠经亲肌肉重组抗原ZW-15免疫后血清特异IgG、IgG1、IgG2a及IgG2b抗体水平均升高,且均显著高于PBS组、弗氏佐剂对照组,差异均有统计学意义(P0.001)。LncRNA 031520在ZW-15免疫组CD4~+T淋巴细胞、总淋巴细胞中相对表达量显著高于PBS对照组和弗氏佐剂对照组(P0.01),在ZW-15免疫组B淋巴细胞及CD8~+T淋巴细胞中相对表达量与PBS对照组及弗氏佐剂对照组相比差异均无统计学意义(均P0.05)。免疫组小鼠脾脏淋巴细胞Th1亚群标志分子IFN-γ表达量为(19.07±3.44)%,显著高于PBS对照组(8.03±2.67)%和弗氏佐剂对照组(9.37±1.25)%(P0.05),Th2亚群标志分子IL-4表达量为(0.79±0.02)%,显著高于PBS对照组(0.44±0.13)%和弗氏佐剂对照组(0.50±0.15)%(P0.05)。结论 LncRNA 031520在细粒棘球绦虫重组亲肌肉抗原ZW-15免疫小鼠淋巴细胞中表达上调,可能在亲肌肉抗原抵御细粒棘球蚴感染中发挥免疫保护作用。     

细粒棘球绦虫重组BCG-Eg95疫苗免疫小鼠后脾细胞亚群的动态观察

目的 动态观察细粒棘球绦虫重组BCG-Eg95疫苗免疫小鼠后脾细胞亚群的变化.方法 将120只Balb/c小鼠按体质量随机分为3组:鼻腔内接种组、口服灌胃组、对照组.将疫苗分别采用鼻腔内接种和口服灌胃免疫实验组小鼠,对照组单次接种10μl磷酸盐缓冲液(PBS)于小鼠鼻腔黏膜.在免疫后0、2、4、6、8、10、12、14、16、18周各剖杀4只小鼠,取脾脏,分离脾细胞,流式细胞仪检测脾CD4+、CD8+T淋巴细胞亚群的百分比.结果 不同组的小鼠脾细胞CD4+、CD8+亚群百分比比较差异有统计学意义(F值分别为21.56、22.08,P＜0.05),不同周数的小鼠脾细胞CD4+、CD8+亚群百分比比较差异有统计学意义(F值分别为5.75、6.29.P＜0.01).鼻腔内接种组的脾CD4+、CD8+T细胞亚群分别在免疫后6-18、12周升高,在免疫后10、12周达最高水平,其值分别为0.348±0.013、0.090±0.003.与0周(0.230±0.022、0.069±0.015)比较差异有统计学意义(q值分别为7.32、5.32,P＜0.01或＜0.05);口服灌胃组脾细胞CD4+、CD8+T细胞亚群分别在免疫后6～16、8-18周增加,分别在免疫后10、16周达最高水平,其值分别为0.405±0.006、0.096±0.004,与0周(0.230±0.022、0.069±0.015)比较差异有统计学意义(q值分别为7.53、5.35,P＜0.01或＜0.05).结论 CD4+、CD8+T细胞亚群在细粒棘球绦虫重组BCG-Eg95疫苗诱导的小鼠免疫应答中起重要作用.     

细粒棘球蚴重组铁蛋白和重组线粒体苹果酸脱氢酶免疫差异的初步观察

目的比较细粒棘球蚴重组铁蛋白(rEgferritin)和重组线粒体苹果酸脱氢酶(rEgmMDH)对感染细粒棘球蚴(Echinococcus granulosus)小鼠的免疫差异。方法 30只雌性ICR小鼠随机分为3组(rEgferritin免疫组、rEgmMDH免疫组和对照组)。将rEgferritin、rEgmMDH和PBS与佐剂乳化后,分别于背部皮下多点注射免疫小鼠,每次注射100μl/只(含抗原10μg),共免疫3次,每次间隔2周。末次免疫后2周,3组小鼠分别于腹腔注射0.1 ml原头节悬液(约1 500个)进行攻击感染,22周后剖杀,无菌取脾组织,并记录包囊数量和直径,评价免疫保护力。用流式细胞仪检测脾组织中CD4+T细胞和CD8+T细胞,计算两者比例。结果 rEgferritin免疫组30%(3/10)小鼠有包囊,包囊总数为5个;rEgmMDH免疫组小鼠均有包囊,包囊总数为118个;对照组9只小鼠中7只有包囊,包囊总数为35个。rEgferritin免疫组小鼠获得了84.7%的免疫保护力,而rEgmMDH组无免疫保护力。小鼠脾淋巴细胞CD4+亚群百分比,rEgferritin免疫组[(57.50±7.02)%]显著高于对照组[(43.60±6.09)%](P<0.05)。小鼠脾淋巴细胞CD8+亚群百分比,rEgferritin免疫组[(25.66±6.18)%]和rEgmMDH免疫组[(19.23±5.40)%]与对照组[(21.80±6.12)%]比较,差异均无统计学意义(P>0.05)。小鼠脾淋巴细胞CD4+/CD8+亚群比值,rEgferritin免疫组和rEgmMDH免疫组与对照组比较,差异均无统计学意义(P>0.05)结论 rEgferritin能抑制细粒棘球蚴的生长,而rEgmMDH促进了细粒棘球蚴的生长。     

细粒棘球蚴慢性感染阶段小鼠血清中炎症因子的变化及意义

目的研究细粒棘球蚴慢性感染阶段小鼠血清中细胞因子水平的变化,探索机体对抗寄生虫感染的免疫应答 机制。方法从病羊内脏分离细粒棘球绦虫原头节,注射入BALB/c小鼠腹腔（2 000个原头节/只）,建立细粒棘球蚴感染 小鼠模型,对照组小鼠腹腔注射等体积PBS。于感染5个月后,采集对照及感染组小鼠血清,采用流式液相多重蛋白定量 技术检测血清中多种细胞因子水平并分析。结果感染组小鼠腹腔、肝脏、肺脏等部位均出现多个单一性包囊;其血清 中IL?17A、IL?6、IFN?γ、MCP?1、IL?12P70、TNF?α等炎症因子水平均显著高于对照组（t = 2.713～9.255,P 均< 0.05）;而抑 炎因子IL?10水平亦显著升高（t = 3.936,P < 0.001）。结论细粒棘球蚴慢性感染阶段小鼠体内炎症因子水平较高,有助 于抑制虫体生长。     

细粒棘球绦虫原头节抗原分子Eg-01883的克隆、表达及免疫原性分析

目的筛选细粒棘球蚴原头节抗原分子Eg-01883,并进行克隆、表达及免疫原性分析,为寻找棘球蚴病特异性诊断抗原提供依据。方法分析已发表的细粒棘球绦虫mRNA测序数据,筛选六钩蚴中不表达、原头节中高表达的抗原分子Eg-01883。提取细粒棘球蚴原头节总RNA,用RT-PCR对目的基因Eg-01883进行克隆,重组构建原核表达载体p ET28a-Eg-01883,异丙基-β-D-硫代半乳糖苷(IPTG)诱导表达并纯化目的重组蛋白r Eg-01883。ICR小鼠随机分为3组(每组12只),免疫组小鼠的背部皮下多点注射r Eg-01883,2周后加强免疫1次(剂量均为10μg,100μl/只);佐剂组注射福氏佐剂和PBS,空白对照组不作任何处理。分别于免疫前,首次免疫后1、2、4周每组小鼠尾静脉采血,免疫后6周进行去眼球采血。用ELISA检测3组小鼠免疫后不同时间点的血清特异性Ig G抗体水平,及细胞因子白介素4(IL-4)和γ干扰素(IFN-γ)水平。蛋白质印迹(Western blotting)分析重组蛋白r Eg-01883的免疫原性。结果筛选出在细粒棘球蚴原头节中高表达的抗原分子Eg-01883,克隆、表达和纯化后获得重组蛋白r Eg-01883,该蛋白主要以包涵体形式存在。ELISA检测结果显示,用纯化后的重组蛋白r Eg-01883免疫小鼠,可诱导产生特异性Ig G抗体,免疫组小鼠的血清Ig G抗体水平自首次免疫后1周开始上升,6周时达到最高水平(2.344±0.153),显著高于佐剂组(0.206 1±0.006)和空白对照组(0.241±0.01)(P0.01)。首次免疫后6周,血清中的细胞因子IFN-γ和IL-4水平,免疫组分别为43.23 pg/ml和24.88 pg/ml,均显著高于佐剂组(21.77 pg/ml,13.27 pg/ml)和空白对照组(17.40 pg/ml,12.25 pg/ml)(P0.05)。Western blotting分析结果显示,该重组蛋白r Eg-01883抗原可被His-Tag标签抗体、免疫组小鼠血清、原头节继发感染的小鼠血清识别。结论筛选获得细粒棘球绦虫原头节中高表达的抗原分子Eg-01883,克隆、表达、纯化后的重组蛋白r Eg-01883免疫ICR小鼠具有较好的免疫原性。     

细粒棘球绦虫烯醇酶基因克隆 表达及免疫诊断研究

目的克隆表达细粒棘球绦虫烯醇酶(EgEno)基因,并对其免疫诊断价值进行初步评价。方法从细粒棘球绦虫cDNA中扩增目的基因,克隆入表达载体pET28a,转化E.coliBL21(DE3),经异丙基βD硫代半乳糖苷(IPTG)诱导表达后,进行SDS PAGE和免疫印迹法鉴定;采用细粒棘球蚴病及其他几种寄生虫病患者的血清和健康人血清,通过ELISA法评价重组EgEno抗原的免疫诊断效果。结果重组质粒pET28a EgEno构建成功。SDS PAGE和免疫印迹法结果显示,重组蛋白在E.coliBL21(DE3)中获得高效表达,重组蛋白EgEno相对分子量约为50 kDa,可被细粒棘球蚴病患者血清识别。EgEno对细粒棘球蚴病患者血清的免疫诊断敏感性为81.25%。结论克隆出细粒棘球绦虫EgEno基因并在E.coliBL21(DE3)中表达,重组EgEno对细粒棘球蚴病有较好的免疫诊断价值。     

抗细粒棘球绦虫成虫单克隆抗体的制备及鉴定

目的 建立能分泌与细粒棘球绦虫(简称包虫)成虫特异结合的抗包虫成虫单克隆抗体的杂交瘤细胞株。方法 用包虫成虫抗原免疫BALB／c小鼠后，获取免疫的脾细胞，与小鼠骨髓瘤细胞SP2／0融合。结果 ELISA方法筛选出1株能持续稳定分泌抗包虫成虫单克隆抗体的杂交瘤细胞株，1F5E3C9E9D5杂交瘤细胞株分泌的单克隆抗体可以与包虫成虫、棘球蚴结合，与囊液抗原呈边缘性阳性反应，而与泡球蚴EM2抗原呈阴性反应。冻存1个月后复苏，仍能稳定分泌。经免疫组织化学检测发现，该单克隆抗体与棘球蚴的生发层，棘球蚴原头节虫体呈阳性反应。结论 1F5E3C9E9D5是一株稳定的杂交瘤细胞株，所分泌的抗细粒棘球绦虫成虫单克隆抗体在粪抗原的检测方面有应用前景。     

晚期胰腺癌患者凝血、抗凝功能的变化及意义

检测２２例晚期胰腺癌患者的凝血酶原时间（ＰＴ）、激活的部分凝血酶原时间（ＡＰＴＴ）、纤维蛋白原（Ｆｇ）、ｖｉｌｌｅ ｂｒａｎｄ因子（ＶＷＦ）等凝血指标及抗凝血酶Ⅲ活性（ＡＴ－ⅢＡ）、抗凝血酶Ⅲ抗原（ＡＴ－ⅢＡｇ）、Ｃ蛋白活性（ＰＣ：Ａ）等抗凝指标，并与正常人进行对比分析。结果显示：是期胰腺癌患者的ＰＴ、ＡＰＴＴ明显延长（Ｐ〈０．０１），Ｆｆ、ＶＷＦ升高（Ｐ〈０．０１），ＡＴ－ⅢＡ％降低（Ｐ〈０．０     

TyG指数和AIP与慢性冠脉综合征严重程度的相关性

目的]探讨慢性冠脉综合征(CCS)患者血浆动脉硬化指数(AIP)和甘油三酯葡萄糖乘积(TyG)指数与其严重程度的相关性。 [方法]回顾性选取2017年5月—2023年5月就诊于兰州大学第一医院心内科行冠状动脉造影检查确诊为CCS的患者298例,收集临床指标,根据冠状动脉造影结果计算Gensini积分,比较不同Gensini积分组的临床资料,线性回归分析Gensini积分升高的影响因素,受试者工作特征(ROC)曲线判断AIP和TyG指数对CCS患者冠状动脉病变严重程度的预测价值。 [结果]该人群男性占77.9%,平均年龄(61.9±8.0)岁;Gensini高积分组的校正AIP(aAIP)和TyG指数高于低积分组和中积分组,差异具有显著性;线性回归分析显示总胆固醇(TC)、高密度脂蛋白胆固醇(HDLC)、aAIP和TyG指数是Gensini积分升高的影响因素(均P＜0.05);相关分析显示aAIP和TyG指数与左心室射血分数(LVEF)呈负相关,与Gensini积分呈正相关,与支架植入和支架植入数量呈正相关(均P＜0.05);ROC曲线结果显示,aAIP阈值为1.924时预测Gensini积分≥41分的ROC曲线下面积(AUC)为0.583(95%CI 0.525～0.640),灵敏度为92.62%,特异度为25.50%,约登指数为0.181;TyG指数阈值为8.748时预测Gensini积分≥41分的AUC为0.768(95%CI 0.716～0.815),灵敏度为77.18%,特异度为67.11%,约登指数为0.443。 [结论]aAIP和TyG指数与CCS患者的严重程度正相关,两者升高均可预测CCS患者冠状动脉病变严重程度,但TyG指数预测能力优于aAIP。     

混合食物血糖生成指数的实际值与预测值的关系

目的测定30种混合食物血糖生成指数（GI）值,分析膳食成分对GI的影响并探讨实测GI与预测GI的相关性方法以葡萄糖为参照物,测定混合食物GI。测定7～10名志愿者空腹及餐后7个时点血糖,计算GI。结果30种混合食物的GI范围在32～79之间;脂肪占热能百分比及膳食纤维是混合食物GI的强回归因子;实测GI值与传统公式计算的GI预测值相关性差,而加入脂肪占热能百分比和膳食纤维后的校正预测值与实测值有良好的相关性。结论脂肪和膳食纤维是影响混合食物GI的主要因素,把脂肪占热能的百分比和膳食纤维加入GI的影响因子,则预测公式能更好地反映真实的GI值。     

甘油三酯葡萄糖指数和血浆致动脉粥样硬化指数对冠心病患者PCI后再次血运重建的预测价值

【摘要】目的：探究甘油三酯葡萄糖指数（TyG）和血浆致动脉粥样硬化指数（AIP）对植入药物洗脱支架（DES）的冠心病患者再次血运重建的预测价值。方法：选取2018年1月至2020年1月DES植入后冠脉造影复查的787例冠心病患者。将患者分为再次血运重建组和对照组。使用SPSS 25.0版本和R软件4.1.3版本进行统计分析。结果:再次血运重建组TyG指数和AIP均高于对照组,差异有统计学意义（P＜0.05）。在完全校正Cox回归模型中,TyG指数和AIP的血运重建事件的风险比(95% CI)分别为1.05(0.76-1.46)和1.47(1.11-1.93)。时间依赖的ROC分析显示,TyG指数的曲线下面积(AUC)为0.571-0.618,AIP为0.573-0.605,TyG指数与AIP联合的AUC为0.577-0.614。结论:对冠心病PCI后的患者,TyG指数和AIP对再次血运重建事件有较好的预测价值。     

再生障碍性贫血患者切脾治疗前后的红细胞寿命的观察

本文用~(51)铬标记受检者自身红细胞法,对16例健康人及7例慢性再生障碍性贫血(慢再)患者,切脾治疗前后的红细胞寿命(RBC T_(1/2))及其破坏部位的测定值进行了比较分析。6例慢再患者的SDI、S/L、SLI值高于正常值,切脾后RBC T_(1/2)延长了0.8～14.8天,切脾治疗有效。1例SDI、S/L、SLI值在正常值范围,切脾后RBC L_(1/2)无增加,切脾治疗无效。因之,RBC T_(1/2),SDI、S/L、SLI的测定对遴选切脾治疗病例及观察疗效,有一定的临床意义。     

Sphincter of Oddi laxity:An important factor in hepatolithiasis

AIM:To evaluate the importance of sphincter of Oddi laxity (SOL) in hepatolithiasis (HL).METHODS:Subjects included 98 patients diagnosed with HL between 2002 and 2007. Detailed histories were taken and the subjects were monitored until July 2008. HL patients were divided into two groups:Group included 45 patients with SOL,and Group included 53 patients without. Recurrence and reoperation indices of both groups were calculated and compared.RESULTS:The recurrence index was 0.135 in Group and 0.018 in Group fl...     

Usefulness of bispectral index and patient state index during sevoflurane anesthesia in children: A prospective observational study

Cortical electroencephalography-based devices are used to monitor the depth of anesthesia. In this study, we evaluated the values of bispectral index (BIS) and patient state index (PSI) during sevoflurane anesthesia in children. The ability/accuracy of BIS and PSI to predict the maintenance and recovery state of anesthesia was evaluated based on prediction probability (Pk) values and the secondary outcomes were agreement and correlation of 2 monitors.Fifty children (3–12 years old) were enrolled and the patients received sevoflurane anesthesia with remifentanil followed by propofol administration. Before the induction of anesthesia, BIS and PSI sensors were simultaneously placed on the forehead, and data were collected until the end of anesthesia. Maintenance state was defined as the period following intubation until the cessation of sevoflurane, while recovery state was defined as the period following the cessation of sevoflurane until awake. Pk, agreement or correlation of BIS and PSI in different anesthesia state were calculated.Anesthesia reduced mean BIS and PSI values. Pk of BIS (95% confidential interval [CI]: 0.78–0.91) and PSI (95% CI: 0.82–0.91) for anesthesia were 0.85 and 0.87, respectively. Agreement was 0.79 for recovery state and 0.73 for maintenance state. Pk values were comparable for BIS and PSI.Agreement between BIS and PSI measurements in the same state was relatively good. Therefore, these monitors are appropriate for monitoring for different state of anesthesia in pediatric population.     

Histopathological study of intraductal papillary mucinous tumor of the pancreas: special reference to the roles of Survivin and p53 in tumorigenesis of IPMT

Aim. In this study, we investigated the tissue expression of Survivin, p53, and Bcl-2 in intraductal papillary-mucinous tumor (IPMT) of the pancreas to identify their roles in tumorigenesis of IPMT, and examined their correlations with tumor cell apoptosis and proliferation in IPMT. The diagnostic values of the expression of Survivin, p53, and Bcl-2 and the apoptotic index (AI) and Ki-67 labeling index (Ki-67 LI) in IPMT were also examined. Methods. Twenty-two lesions from 17 patients with IPMT, including 12 benign (IPMT Adenoma) and 10 malignant (IPMT Carcinoma In Situ [CIS] (n=4) and Invasive IPMT (n=6) lesions, were immunostained for Survivin, p53, Bcl-2 and Ki-67. The apoptotic cells were detected by the Apop Tag? In Situ Oligo Ligation (ISOL) method. Results. The immunoreactivities for Survivin and p53 significantly increased in the transition from IPMT Adenoma to IPMT CIS (p<0.05 for both). This transition was associated with a significant decrease in tumor cell apoptosis (p<0.001). The expression of Survivin was significantly associated with AI in IPMT (p<0.01), but not with Ki-67 LI. The expressions of Survivin and p53, and AI and Ki-67 LI were also significantly different between benign IPMT and malignant IPMT. Bcl-2 was not expressed in IPMT. Conclusion. These results suggest that Survivin and p53 may play important roles in the transition from IPMT Adenoma to IPMT CIS. This transition is accompanied by a significant decrease in tumor cell apoptosis. Survivin is significantly associated with the change in AI in IPMT. The immunohistochemical detection of Survivin and p53 as well as the determination of the AI and Ki-67 LI have useful roles in the diagnosis of IPMT.     

The Effect of Untraditional Lipid Parameters in the Development of Coronary Artery Disease: Atherogenic Index of Plasma,Atherogenic Coefficient and Lipoprotein Combined Index

ObjectiveIn this study, we investigated the usability of atherogenic indices of patients who underwent coronary artery bypass surgery (CABG) due to coronary artery disease and patients without CAD as risk factors and markers for cardiovascular disease (CVD).MethodsThe data of 150 patients who underwent CABG, and 155 patients who underwent coronary angiography and was not diagnosed with CAD were analysed retrospectively. Demographic data and plasma lipid values were collected. The relationship between these ratios and CVD was investigated via univariate logistic regression analysis performed by creating atherogenic indices.ResultsThe data of 125 patients who underwent CABG between May 2018 and May 2020 (90 males, 35 females; mean age 64,94 ± 9,61), and 155 patients who had coronary angiography between the same dates and found to have no CAD (64 males, 91 females; mean age 60,12 ± 11,6) were analysed retrospectively. The atherogenic index of plasma (AIP), atherogenic coefficient (AC) and lipoprotein combined index (LCI) ratios were found to be significantly higher in the CABG group compared to the control group (p < 0.001). CABG applied patients were divided into three groups according to their SYNTAX Score-I values. There was no statistical difference in the AIP (p = 0.434), AC (p = 0.715) and LCI (p = 0.891) ratios between the groups. In the ROC analysis of the CABG group, it was found that the AC value was the highest in terms of sensitivity with a value of 74.4% (AUC = 0.669, p < 0.001), and the LCI was the highest in terms of specificity with a value of 65.8% (AUC = 0.634, p < 0.001). In the univariate logistic regression analysis created, it was seen that all three indices had a significant effect in the CABG group (AIP; OR 0.493 p = 0,002, AC; OR 0.298 p < 0,001, LCI; OR 0.358 p = 0,001).ConclusionThe use of atherogenic indices in daily practice can be recommended in the process of monitoring the risk of CVD in CAD patients, along with determining those patients’ lipid profiles.     

Importance of the index of myocardial performance in evaluation of left ventricular function

The index of myocardial performance (MPI) has been used as an easily obtainable parameter that reflects both systolic and diastolic functions of the myocardium and correlates closely with invasive measurements. This study investigated the importance of MPI on assessment of left ventricular function in patients with critical coronary artery disease. Methods: We studied 82 patients who had coronary angiography and echocardiography. Patients in Group A were without critical coronary stenosis (n = 37, 17 females, 20 males, mean age 54 +/- 11 years) and patients in Group B had critical coronary stenosis (> 70%) without previous myocardial infarction (n = 45, 18 female, 27 male, mean age 57 +/- 10 years). Using echocardiographic parameters, left ventricular isovolumetric relaxation time (IRT), isovolumetric contraction time (ICT), ejection time (ET), ratio of velocity time integrals (vti) of early and late diastolic mitral flow (E/Avti), E deceleration time (EDT), MPI [(IRT + ICT) / ET], ejection fraction (EF), and fractional shortening (FS) were calculated. During cardiac catheterization, Dp/Dt [(diastolic blood pressure - left ventricular end diastolic pressure) / ICT] was calculated. Results: There were significant differences in IRT, EDT, E/Avti, and the MPI between Groups A and B (95.9 +/- 14.7 and 113.4 +/- 14.3 msec, P < 0.001; 164.5 +/- 44.8 and 186.2 +/- 33.6 msec, P < 0.05; 1.51 +/- 0.45 and 1.24 +/- 0.80 msec, P < 0.05; and 0.45 +/- 0.08 and 0.53 +/- 0.07 msec, P < 0.001, respectively), but there were no significant differences in ICT, ET, EF, FS, and Dp/Dt between the two groups. Both groups showed a close correlation between MPI and Dp/Dt (r = - 0.78 for Group A and r = - 0.82 for Group B). There were no significant differences in heart rate and systolic and diastolic blood pressure between the two groups. Conclusion: These data suggest that MPI may be a useful parameter and an early indicator of left ventricular dysfunction in patients with critical coronary artery disease and normal systolic function.