血清HMGB1、CCL20、HSP27水平与慢性牙周炎患者牙周病变程度的相关性分析

目的探讨血清高迁移率族蛋白1(HMGB1)、CC趋化因子配体20(CCL20)、热休克蛋白27(HSP27)水平与慢性牙周炎(CP)患者牙周病变程度的相关性。方法选取2021年9月至2023年8月在新乡医学院第一附属医院诊治的60例CP患者纳入观察组,根据1∶1原则,另选取同期牙周健康者60例纳入对照组。比较两组及不同牙周病变程度CP患者血清HMGB1、CCL20、HSP27水平,分析各指标水平与CP牙周病变程度的相关性及联合诊断价值,并分析不同血清水平患者发生CP的危险度。结果观察组血清HMGB1、CCL20、HSP27水平高于对照组(P<0.05);不同牙周病变程度CP患者血清HMGB1、CCL20、HSP27水平比较:轻度<中度<重度,且各指标水平与牙周病变程度均呈正相关(P<0.05);入院时HMGB1、CCL20、HSP27水平联合诊断CP的曲线下面积(AUC)为0.905,最佳诊断敏感度为91.67%,特异度为88.33%,约登指数0.800,且各指标高水平患者发生CP的危险度是低水平的1.105倍、1.034倍、1.105倍(P<0.05)。结论HMGB1、CCL20、HSP27在CP患者血清中呈异常高表达,各指标水平与牙周病变程度均呈正相关,且联合检测对CP具有较高诊断价值,可作为临床诊断CP、评估牙周病变程度的有效指标。

壳聚糖纳米颗粒负载落新妇苷通过调控MAPK14/HSP27影响高糖诱导的肾小管上皮细胞铁死亡

目的探讨壳聚糖纳米颗粒(CS NPs)负载落新妇苷(落新妇苷-CS-NPs)通过调控丝裂原活化蛋白激酶14(MAPK14)/热休克蛋白27(HSP27)对高糖(HG)诱导的肾小管上皮细胞铁死亡的影响。方法将HK-2细胞分组如下:正常糖(NG)组、HG组、HG+落新妇苷-CS-NPs(0、5、10、20 mg/L)组,以及HG条件下的pcDNA3.1-MAPK14组、pcDNA3.1-MAPK14+落新妇苷-CS-NP组、si-HSP27组、pcDNA3.1-MAPK14+si-HSP27组、pcDNA3.1-MAPK14+si-HSP27+落新妇苷-CS-NPs组。CCK-8法检测细胞活力,TUNEL法检测细胞凋亡。同时通过试剂盒测定铁离子水平、乳酸脱氢酶(LDH)活性、谷胱甘肽(GSH)水平、活性氧(ROS)水平。构建糖尿病肾脏病(DKD)大鼠模型,并使用落新妇苷-CS-NPs干预,探究其对体内DKD的影响。结果与NG组相比,HG组HK-2细胞活力降低、凋亡增加,铁离子水平、LDH活性、ROS水平升高,而GSH水平明显降低(P<0.05)。经过落新妇苷-CS-NPs处理组明显逆转了HG对HK-2细胞生物学行为及铁死亡相关指标的影响。此外,相比于pcDNA3.1组,pcDNA3.1-MAPK14组铁死亡增加,而敲减HSP27或者联合落新妇苷-CS-NPs干预则改善了这一情况。体内实验结果表明,落新妇苷-CS-NPs能够改善DKD大鼠肾损伤、抑制铁离子水平以及MAPK14/HSP27的表达。结论落新妇苷-CS-NPs可能通过抑制MAPK14与HSP27表达,改善HG诱导的肾小管上皮细胞铁死亡。

老年急性脑梗死患者血清OX−LDL、HSP27水平与脑水肿及短期预后关系

目的分析老年急性脑梗死(acute cerebral infarction,ACI)患者血清氧化低密度脂蛋白(oxidized low density lipoprotein,OX-LDL)、热休克蛋白27(heat shock proteins 27,HSP27)水平与脑水肿严重程度及短期预后的关系。方法回顾性分析2019年1月—2021年9月郑州大学第五附属医院收治的初发老年ACI患者120例(研究组)住院后当天,第3、5、7天的病例资料,按照患者住院当天美国国立卫生院卒中量表(national institute health stroke scale,NIHSS)评分分为轻度组(n=36)、中度组(n=50)、重度组(n=34),于发病后90天,根据改良Rankin量表(modified Rankin Scale,mRS)评分分为预后良好组(n=82)和预后不良组(n=38);另取同期门诊健康体检者120例为对照组。采用酶联免疫吸附试验(ELISA)检测血清OX-LDL、HSP27水平,采用BORN-BE无创脑水肿动态监护仪检测患侧及对照组同侧大脑半球脑电阻抗扰动系数(coefficient of electrical impedance,CEI),采用Pearson法分析血清OX-LDL、HSP27水平与CEI扰动系数的相关性。结果与对照组比较,轻度组、中度组、重度组ACI患者NIHSS评分依次升高,差异有统计学意义(P<0.05)。与对照组比较,轻度组、中度组、重度组ACI患者血清OX-LDL水平、CEI依次增加,差异有统计学意义(P<0.05),均呈先增加后降低趋势,在第5天达到高峰,于第7天开始下降;血清HSP27水平依次降低,差异有统计学意义(P<0.05),随时间变化趋势与OX-LDL相反。Pearson相关性分析结果显示,ACI患者各时间点血清OX-LDL与CEI均呈正相关(P<0.05),血清HSP27水平与CEI均负相关(P<0.05)。与预后良好组比较,预后不良组患者各时间点血清OX-LDL水平升高,差异有统计学意义(P<0.05),随住院时间延长呈先升高后降低趋势,且在第5天达到高峰,第7天开始下降;血清HSP27水平降低,差异有统计学意义(P<0.05),随时间变化趋势与OXLDL相反。结论血清OX-LDL、HSP27水平变化与ACI患者病情、脑水肿严重程度及预后有关,可能对ACI患者脑水肿严重程度及预后评估有一定临床指导意义。

Expression of Heat Shock Protein 70 and 27 in Non-small Cell Lung Cancer and Its Clinical Significance

The heat shock proteins （HSPs） 70 and HSP 27 expression in patients with non-small cell lung cancer （NSCLC） was studied and the relation.ship between HSP 70 and HSP 27 with the clinicopathological features of NSCLC was investigated. The expression of HSP 70 and HSP 27 was detected in tumor tissues from 60 patients with NSCLC by S-P immunohistochemistry. The findings were analyzed in combination with the histological types, histopathological differentiation, lymph node metastasis, patients＇ clinical stages, smoking history and gender. The results showed that of the 60 NSCLC tissue specimens studied, the immunoreactivity of HSP 70 and HSP 27 was detected in 47 （78.3 %） and 43 （71.7 %） specimens, respectively. A positive correlation was found between the overexpression of HSP 70 and HSP 27. The histopathological differentiation, lymph node metastasis, clinical stages and smoking history were correlated to the expression of HSP 70, but not to the expression of HSP 27. No statistical significance was observed in histological types and gender with respect to both HSP 70 and HSP 27 expression. It is suggested that the HSP 70 expression is a powerful and significant prognostic indicator and is related to histopathological differentiation, lymph node metastasis, patients＇ clinical stages, smoking history, whereas HSP 27 expression is not.

Molecular cloning of human heat shock protein 27 and study of its protective effects on oxidative damage in rat cardiomyocte H9c2

Objective： To clone human cardiac heat shock protein 27 （HSP27） gene and to determine the effects of HSP27 on the oxidative stress in rat cardiomyocyte cell line H9c2. Methods： Full length of HSP27 cDNA which got by RT-PCR was constructed into pCDNA3.1^＋ . The recombinant was transfected into rat cardiomyocyte cell line H9c2 and the stable trahsfection cell line was selected by G418. Then we observe the effects of HSP27 over-expression on LDH release and apoptosis induced H2O2 in H9c2. Results： ①pCDNA3.1^＋/HSP27 provided a sound expression of HSP27 in both 293T and H9c2. ②LDH releasing induced by 0, 100,250,500, 1000 μmol/L H2O2 in HSP27 over-expression group and wild type group were 0.396±0.017 vs. 0.390±0.01）9 （p 〉0.05）, 0.437±0. 014 vs. 0.416±0.015 （P〈0.05）, 0.471±0.018 vs. 0.417±0.009 （P 〈0.001）, 0.505±0.030 vs. 0.657± 0.022（P 〈0.001）, 0.547 ±0.027 and 0.661 ± 0.011（ P 〈 0. 001 ）, respectively. ③Apoptosis induced by 150 μmol/L H2O2 in HSP27 over-expression group and wild type group were （10.693± 1.122）% vs. （4.027 ± 1.628）%（ P 〈0.01）. Conclusion： We cloned and constructed human cardiac HSP27 gene successfully, and over-expression of human HSP27 could inhibit oxidative damage significantly in H9c2.

Sensitized heat shock protein 27 induces retinal ganglion cells apoptosis in rat glaucoma model

AIM: To investigate the relationships between the changes of heat shock protein 27 antibody(anti-HSP27) in serum/cerebrospinal fluid(CSF), intraocular pressure(IOP), retinal ganglion cell(RGC) apoptosis in a rat glaucoma model and disclose the underlying pathogenesis of glaucoma.METHODS: A total of 115 Wistar rats were randomly divided into 4 groups. Group 1 was the ocular hypertension group by condensing 3 episcleral & limbal veins or episcleral area of right eye(HP group, n=25) and sham operation group with conjunctiva incision without coagulation(n=25). Group 2: HSP27 or dose-matched PBS was injected into the vitreous(V-HSP27 group, n=15;V-PBS group, n=15). Group 3: HSP27 and complete Freund's adjuvant or dosematched PBS was injected subcutaneously into the hind limb accompanied intraperitoneal injection of pertussis toxin [sensitized group(I-HSP27 group), n=15;I-PBS group, n=15)]. Group 4 was normal group without any treatment(n=5). IOPs of the rats were measured before, day 3, weeks 1, 2, 4, 6, and 8 after treatment. Paraffin-embedded sections were prepared for HE staining and RGCs apoptosis were detected by TUNEL. Anti-HSP27 level in serum and CSF were examined by ELISA. RESULTS: IOPs were elevated significantly in HP and V-HSP27, V-PBS groups(P<0.01) and positively related to anti-HSP27 levels in serum and CSFs. Anti-HSP27 levels in serum and CSF were elevated significantly in I-HSP27group compared to other groups(P<0.05). However, the IOPs did not show any relationship with the high-level antiHSP27 in serum and CSFs. RGC apoptosis were all elevated significantly in the HP, V-HSP27, V-PBS and I-HSP27 groups and also positively relative with anti-HSP27 level in serum and CSFs except that high-level of anti-HSP27 in the serum of I-HSP group.CONCLUSION: The increases of anti-HSP27 levels in serum and CSFs both promote IOP escalation and the increase of RGC apoptosis in retina when anti-HSP27 is at low level. The case of high-level anti-HSP27 is opposite and shows protective function in preventing IOP increase and RGC apoptosis.

Malarial pigment enhances heat shock protein-27 in THP-1 cells:new perspectives for in vitro studies on monocyte apoptosis prevention

Objective:To investigate the effect of malarial pigment(hemozoin,HZ) on expression of heat shock proteins(HSPs) and cell viability in human monocytes by using a stable cell line(THP-1 cells).Methods:THP-1 cells were fed with native HZ or treated with pro-apoptotic molecule gliotoxin for 9 h.Thereafter,the protein expression of HSP-27 and HSP-70 was evaluated by western blotting.Alternatively,HZ-fed cells were cultured up to 72 h and cell viability parameters(survival,apoptosis and necrosis rates) were measured by flow cytometric analysis. Results:HZ increased basal protein levels of HSP-27 without altering those of HSP-70 in THP-1 cells,and promoted long-term cell survival without inducing apoptosis.As expected,gliotoxin inhibited HSP-27 protein expression and promoted long-term cell apoptosis.Conclusions: Present data show that HZ prevents cell apoptosis and enhances the expression of anli-apoptotic HSP-27 in THP-1 cells,confirming the previous evidences obtained from HZ-fed immunopurified monocytes.Since the use of a stable cell line is pivotal to perform HSP-27 silencing experiments, monocytic THP-1 cells could be a good candidate line for such an approach,which is heavily required to clarify the role of HSP-27 in survival of impaired HZ-fed monocytes during falciparum malaria.

热休克蛋白27对水泡性口炎病毒体外增殖的调控作用

本研究旨在探究热休克蛋白27(heat shock protein 27, HSP27)对水泡性口炎病毒(vesicular stomatitis virus, VSV)体外增殖及VSV感染介导的维甲酸诱导基因I样受体家族(retinoid acid-inducible gene-I-like receptor, RLR)信号通路的作用及机制。利用实时荧光定量PCR、免疫印迹、免疫共沉淀、病毒滴度测定及免疫荧光等方法,首先检测VSV感染对HSP27 mRNA和蛋白表达的影响,进而验证过表达和干扰HSP27对VSV增殖的影响,进一步探究HSP27对VSV感染介导的RLR信号通路的影响,最后分析HSP27与RLR信号通路靶分子的相互作用及共定位情况。结果表明,VSV感染可促使HSP27基因转录和蛋白表达上调,稳定过表达和瞬时过表达HSP27均能显著抑制VSV的体外增殖;干扰宿主细胞中HSP27表达可促进VSV增殖。HSP27能够增强VSV及维甲酸诱导基因I蛋白(retinoic acid-inducible gene I protein, RIG-I)介导的IFN-β的产生及RIG-I的蛋白表达,而且HSP27与RIG-I相互作用并共定位于细胞质中。本研究揭示了HSP27靶向RIG-I上调其表达,增强RLR信号通路的转导,进而负调控VSV体外增殖,为深入揭示宿主因子HSP27在病毒感染中的作用机制奠定基础。

超声检查联合血清糖原合成酶激酶-3β和热休克蛋白27对慢性肺源性心脏病的诊断价值

目的 探讨超声检查联合血清糖原合成酶激酶-3β(GSK-3β)和热休克蛋白27(HSP27对慢性肺源性心脏病(CPHD)的诊断价值。方法 将100例CPHD患者设为观察组,100名健康体检者设为对照组。比较两组受试者一般资料、实验室检查结果、超声检查结果、GSK-3β及HSP27水平。采用Pearson相关性分析法探讨超声检查指标与血清HSP27、GSK-3βmRNA水平的相关性,采用受试者工作特征(ROC)曲线分析超声检查和各项血清指标对CPHD的诊断效能。结果 观察组受试者肺动脉压高于对照组,主肺动脉内径、右室内径及右房内径均长于对照组(P<0.01)。观察组受试者血清HSP27水平高于对照组,血清GSK-3β mRNA水平低于对照组(P<0.01)。血清HSP27水平与肺动脉压、主肺动脉内径、右房内径和右室内径均呈正相关(P<0.05或0.01)。血清GSK-3β mRNA水平与肺动脉压、主肺动脉内径、右房内径和右室内径均呈负相关(P<0.05或0.01)。超声参数、血清GSK-3β、HSP27诊断CPHD的曲线下面积(AUC)分别为0.880、0.834和0.868,联合诊断的AUC为0.923,高于单独诊断。结论 超声参数、血清GSK-3β和HSP27对CPHD均具有较高的诊断价值,联合检测的诊断效果更高。

Effects of Sodium Salicylate on the Expression of HSP27 Protein during Oxidative Stress in Tissue-cultured Human Lens Epithelial Cells

The effects of sodium salicylate on the expression of heat shock protein 27 （HSP27） during oxidative stress in tissue-cultured human lens epithelial cells were investigated. Cultured human lens epithelial cells （HLB-3） were divided into 3 groups： control group （group A）, oxidation injury group （group B） and sodium salicylate group （group C）. Apoptosis of human lens epithelial cells cultured in vitro was induced in the presence of 150 μmol/L H2O2. Cells viability and the expression of HSP27 were analyzed. Viability of the cells was measured by methyl thiazole tetrazolium （MTT） chromatometry. The expression of HSP27 in HLB-3 cells was detected by using immunohistochemistry and image analysis system, Sodium salicylate could induce the expression of HSP27, and the cells viability in group C was significantly higher than in group B （0.2667±0.01414 vs 0.2150±0.01080, P=0.012〈0.05）. The average gray value of HSP27 in group B was less than that in group C （P=0.000〈0.05）. The increased expression of HSP27 by sodium salicylate might play an important role in the protection of hydrogen peroxide-induced injury of human lens epithelial cells, suggesting that sodium salicylate could suppress, at least in part, the apoptosis of human lens epithelial cells.

HSP27:a candidate differentially expressed protein between left-and right-sided colon carcinomas

Objective:The aim of the study was to screen differentially expressed proteins between left-and right-sided colon cancers by proteomics techniques and provide molecular genetic basis for oncobiological difference between left-and rightsided colon cancers.Methods:Tissue samples including left-and right-sided colon cancers were collected and preserved in the-80 ℃ refrigeratory.In the first part of our experiment,protein separating was performed by using two-dimensional gel electrophoresis(2-DE) and the images of the gels were acquired by the scanner and then analyzed to find the differentially expression protein-spots in different groups.The peptide mass fingerprintings(PMF) was acquired by matrix assisted laser desorption/ionization time-of-flight mass spectrometry(MALDI-TOF-MS) and the proteins were identified by data searching in the Mascot-database.Differentially expression proteins were assayed by RT-PCR,Western blot,and immunohistochemical methods.Results:The 55 differentially expressed protein spots were screened and 23 spots of them were identified.Compared to right-sided colon cancer,15 proteins up-regulated and 8 proteins down-regulated including HSP27 in left-sided colon cancer.HSP27 expressed higher in right-sided than in left-sided colon cancers by RT-PCR,Western blot and immunohistochemical methods.Conclusion:There were differentially expressed proteins between left-and right-sided colon cancers,especially differences in HSP27 expression in mRNA and protein level,which were molecular genetic basis for oncobiological difference between left-and right-sided colon cancers.

子宫平滑肌组织Hsp27表达与宫缩乏力性产后出血的关系

目的:探讨宫缩乏力性产后出血产妇子宫平滑肌组织中热休克蛋白27(Hsp27)的表达及意义。方法:收集30例宫缩乏力性产后出血产妇为病例组,同期无产后出血产妇30例为对照组。采用肌条等长张力测定法检测两组子宫平滑肌基础收缩活动力;采用实时荧光定量RT-PCR法检测两组子宫平滑肌组织Hsp27mRNA表达水平;采用蛋白印迹法检测两组子宫平滑肌组织Hsp27、Ser15位点磷酸化的Hsp27(p-Hsp27)蛋白表达水平;采用酶联免疫吸附试验(ELISA)检测两组血清中Hsp27水平。结果:①病例组子宫平滑肌基础收缩活动力水平低于对照组,差异有高度统计学意义(P<0.01);②病例组子宫平滑肌组织Hsp27mRNA表达水平低于对照组,差异有高度统计学意义(P<0.01);③病例组子宫平滑肌组织Hsp27、p-Hsp27蛋白水平低于对照组,差异有统计学意义及高度统计学意义(P<0.05,P<0.01);④病例组和对照组血清中Hsp27表达水平比较,差异无统计学意义(P>0.05);⑤两组子宫平滑肌组织Hsp27mRNA、Hsp27、p-Hsp27蛋白表达水平均与子宫平滑肌基础收缩活动力水平呈正相关(P<0.05)。结论:子宫平滑肌组织Hsp27、p-Hsp27水平降低可能是宫缩乏力性产后出血发病的分子机制之一。

陆川猪HSP27基因的克隆与序列分析

为了研究陆川猪HSP27基因的遗传变异情况,试验采用RT-PCR和克隆方法,扩增了HSP27基因的编码区序列,并进行了测序和序列分析及其蛋白质结构预测。结果表明:陆川猪HSP27基因编码区全长624 bp,编码207个氨基酸;与Gen Bank中已发表的猪HSP27基因序列相比,核苷酸有1个位点发生碱基突变,但并未引起相应氨基酸的改变;陆川猪HSP27成熟肽包含α螺旋、β转角、延长线和无规卷曲;陆川猪HSP27基因与野猪的亲缘关系最近。

肝细胞癌组织中HSP27、VEGF的表达变化及意义

目的观察肝细胞癌(HCC)组织中热休克蛋白27(HSP27)和血管内皮生长因子(VEGF)的表达变化,并探讨其意义。方法采用免疫组化法检测68例HCC组织及癌旁组织中的HSP27、VEGF。结果 HCC组织中HSP27、VEGF阳性表达率分别为75.0%、72.0%,癌旁组织中分别为61.8%、36.8%,两者比较,P均<0.05。HCC组织中,HSP27表达与乙肝表面抗原(HBsAg)阳性、淋巴结转移、肿瘤分化程度有关(P均<0.05),VEGF表达与肿瘤直径、淋巴结转移有关(P均<0.05);HCC组织中,HSP27与VEGF的表达呈正相关(r=0.248,P均<0.05)。结论 HCC组织中HSP27、VEGF表达均升高;二者在HCC发生发展中具有重要作用,检测HSP27、VEGF对HCC的预后判断有一定参考价值。

涎腺肿瘤中HSP27、HSP70与PCNA、CD9蛋白表达的相关性

目的研究热休克蛋白(HSP)27和70在涎腺肿瘤中的表达特征及与增殖细胞核抗原(PCNA)和移动相关蛋白-1(MRP-1,CD9)的相关性,探讨其对涎腺肿瘤发生发展的可能作用。方法采用免疫组化SP法和免疫组化双标双染法检测41例良性和17例恶性肿瘤中HSPs的表达。结果 (1)涎腺肿瘤中HSP27和HSP70高表达,但表达定位和强度存在差异。(2)涎腺恶性肿瘤中HSP27和CD9的阳性率和阳性强度均降低(P<0.05和P<0.01)而HSP70和PCNA的阳性率和阳性强度均增高(P均<0.05)。(3)HSP70的阳性率与阳性强度均与PCNA正相关(相关系数分别为Cramer’sV=3797和r=0.5123,P均<0.01);HSP27的表达率与CD9的阳性率正相关(Cramer’sV=0.3477),但阳性强度比较无相关(r=0.1762,P>0.05)。结论 (1)HSP70可能促进PCNA高表达,有用于涎腺肿瘤细胞的增殖。(2)HSP27可能不完全抑制肿瘤细胞的增殖。(3)HSP27和CD9的表达减少均可能是肿瘤细胞分化降低的标志,协同于增殖的恶性肿瘤细胞的迁移。

重组蛋白PTD-HSP27的制备及其穿细胞膜和角膜组织的功能研究

目的:制备PTD-HSP27蛋白并研究其能否穿过人晶状体上皮细胞SRA01/04细胞膜及新西兰大白兔的角膜组织进入眼前房。方法:利用重叠延伸PCR法获得重组目的基因片段PTD-HSPB1-6His,构建重组质粒p KYB-PTD-HSP27-6His,原核诱导PTD-HSP27蛋白表达及纯化重组蛋白后对其进行Western blotting鉴定;用异硫氰酸荧光素(FITC)标记重组蛋白PTD-HSP27并检测其穿透SRA01/04细胞膜的能力及兔眼角膜组织的能力。结果:成功构建并纯化制备目的蛋白PTD-HSP27,在PTD-HSP27孵育后的SRA01/04细胞及结膜囊滴注PTDHSP27兔眼前房内均可检测出重组蛋白PTD-HSP27。结论:通过重叠延伸PCR法及镍柱层析纯化法可以获得较纯的重组蛋白PTD-HSP27;重组蛋白PTD-HSP27能够穿透SRA01/04细胞膜及穿越兔眼角膜进入房水。

食管鳞状细胞癌组织中HSP27蛋白表达与患者临床病理参数相关性研究

目的探讨HSP27蛋白在食管鳞状细胞癌组织中的表达及临床意义。方法应用Envision免疫组织化学染色方法检测食管鳞状细胞癌及癌旁组织中HSP27表达情况。结果 HSP27阳性表达主要定位于细胞质,其在食管鳞状细胞癌组织中的表达水平明显高于癌旁组织(P<0.05)。HSP27阳性表达与T分期和病理分级有关(P<0.05);但与患者性别、年龄、肿瘤大小、病理分型以及淋巴结转移无关(P>0.05)。结论 HSP27阳性表达情况与食管鳞状细胞癌T分期和病理分级有关,提示HSP27可能作为判断食管癌预后以及治疗的新指标。

HSP27在大肠癌及癌旁组织中的表达及其意义

目的 :探讨热休克蛋白 2 7(HSP2 7)在大肠癌及癌旁组织中的表达及意义。方法 :应用免疫组化S P法检测 72例大肠癌组织和癌旁组织HSP2 7表达情况。结果 :HSP2 7在癌组织与癌旁组织的表达率分别是 4 0 2 8%和 18 75 % ,二者差异有统计学意义 (P <0 0 1)。HSP2 7在高、中、低分化腺癌组织中表达分别是 6 3 6 4 %、31 5 8%和 10 0 0 % ,统计学分析三者之间存在显著性差异 (P <0 0 1)。在大肠癌组织、癌旁组织中HSP2 7表达率与年龄、性别、淋巴结转移、临床分期无相关性 ,但在 >5 0岁组中有 9例呈过表达 (9/ 2 3) ,而≤ 5 0岁组中则无过表达者 ;在伴有淋巴结转移癌组织中HSP2 7表达率为4 3 4 8%。无淋巴结转移者为 38 78% ,统计学分析虽然无显著性差异 (P >0 0 5 ) ,但无淋巴结转移组中HSP2 7有 9例过表达 ,有淋巴结转移组则无 1例过表达。结论 :HSP2 7表达在大肠癌发生过程中发挥重要作用 ,并可能具有抑制肿瘤细胞的恶性转型及防止其侵袭发展作用。

乳腺癌中pS2、HSP27、Cath-D的表达及临床意义

目的 探讨乳腺癌雌激素调节基因 pS2、HSP2 7、Cath D表达的临床意义。 方法 采用免疫组化S -P法检测 50例原发性乳腺浸润性导管癌中ER、pS2、HSP2 7、Cath -D的表达。 结果 pS2的表达与ER呈正相关性 (P <0 .0 1) ;与组织学分级呈负相关性 (P <0 .0 5)。HSP2 7表达与淋巴结转移、组织学分级及ER状态无相关性。有淋巴结转移的乳腺癌 ,间质Cath -D高表达率显著高于无淋巴结转移者 (P<0 .0 1)。结论 pS2表达与ER有关 ,pS2确能反映乳腺癌雌激素调节系统的完整性。间质Cath D表达与淋巴结转移有关 。

甲基强的松龙上调受损视网膜节细胞内Hsp27蛋白的表达

目的研究甲基强的松龙(MP)上调热休克蛋白(Hsp27)蛋白对受损中枢神经元自我保护及修复机制的激发和增强作用,为进一步促进受损中枢神经元存活和纤维再生创造有利的条件。方法建立中枢神经损伤模型(视神经眼眶内切断术),经或未经MP治疗的术后动物分别存活4、7 14、21、28 d,取视网膜,切片,Nissl染色观察视网膜节细胞(RGCs)形态和存活数量的变化,用免疫组织化学染色的方法观察节细胞层中Hsp27的表达(检测A值)。用SAS软件对数据进行统计学处理。结果MP治疗组可见受损RGCs在71、4 d的存活数量增多,有统计学意义(P<0.01),在受损RGCs表达增多的Hsp27表达更加强烈(检测A值)。RGCs存活率与A值在各个时间点的变化趋势相似。结论MP可使具有保护作用的Hsp27表达上调,从形态学角度提示了MP可能激发并增强受损中枢神经的自我保护及修复机制。