IL-17在子痫前期患者胎盘组织的表达

目的探讨白细胞介素-17(IL-17)与子痫前期发病的关系。方法选取2010年10月至2011年12月在广州医学院第二附属医院和广州医学院第三附属医院产科住院的子痫前期患者30例,其中足月妊娠9例,未足月妊娠21例;选取同期住院分娩的正常足月妊娠孕妇30例为对照组。30例正常晚期妊娠孕妇为对照组。采用免疫组化方法检测两组胎盘组织IL-17表达水平。结果子痫前期组胎盘IL-17表达量较对照组升高(P<0.05)。结论IL-17可能介导了子痫前期的发生。     

缺氧对子痫前期胎盘白细胞介素-1β表达的影响

目的:探讨白细胞介素1β(IL1β)在子痫前期患者胎盘中的表达及缺氧对胎盘绒毛产生IL1β的影响。方法:采用半定量PCR方法分别检测子痫前期患者及正常孕妇2组各6例胎盘IL1βmRNA水平;并在缺氧(20mL/L)及常氧(210mL/L)环境下培养8例正常足月胎盘绒毛,通过ELISA检测胎盘绒毛培养液中IL1β的含量。结果:半定量PCR结果显示IL1β在子痫前期患者胎盘中mRNA水平明显高于正常足月妊娠组(P<0.05);在缺氧条件下胎盘绒毛培养上清中IL1β的含量非常显著高于常氧条件下(P<0.01)。结论:IL1βmRNA在子痫前期患者胎盘中高表达,提示IL1β可能参与了妊娠期高血压疾病的病理生理过程;胎盘缺氧可能是妊娠期高血压疾病患者胎盘IL1β水平增高的一个重要因素。     

VEGF在不同类型子痫前期患者胎盘组织中的表达及意义

目的探讨血管内皮生长因子（VEGF）在不同类型子痫前期患者胎盘组织中的表达及意义。方法采用免疫组织化学SP法检测18例正常孕妇（对照组），36例子痫前期患者（子痫前期组，其中轻度子痫前期患者18例，重度子痫前期患者18例）胎盘组织中VEGF的表达强度。结果VEGF主要表达于胎盘绒毛滋养细胞；重度子痫前期患者胎盘绒毛滋养细胞VEGF表达强度明显低于对照组及轻度子痫前期患者（P＜0．05），而轻度子痫前期患者与对照组比较，无显著性差异（P＞0．05）。结论VEGF在胎盘中主要由绒毛滋养细胞分泌，子痫前期患者VEGF分泌减少，尤其是重度子痫前期的患者,这可能是引起局部胎盘绒毛及血管痛变的原因。     

转化生长因子-β1在子痫前期患者胎盘组织中的表达研究

目的探讨转化生长因子-β1mRNA（TGF—β1mRNA）在子痫前期发病机制中的作用。方法采用RT—PCR技术检测45例正常晚期妊娠妇女及56例子痫前期患者（其中轻度子痫前期21例，重度子痫前期35例）胎盘组织中TGF－β3mRNA的表达水平。结果轻、重度子痫前期胎盘组织中TGF－β1mRNA表达水平分别为：0．752±0．133、1．0164-0．346均明显高于正常妊娠组0．384±0．098（均P〈0．01），重度子痫前期组高于轻度子痫前期组（P〈0．01）。子痫前期胎盘组织中TGF-β1mRNA表达水平与24h尿蛋白、血压、新生儿体重及胎盘重量均有明显相关性。结论1．子痫前期胎盘组织中TGF-β1mRNA表达水平明显升高，并且与子痫前期病情发展密切相关。2．胎盘组织TGF－β1mRNA的表达水平与子痫前期患者胎儿发育密切相关。     

子痫前期患者胎盘中人表皮生长因子受体1的表达研究

目的通过检测子痫前期患者胎盘滋养细胞人表皮生长因子受体1（ErbB1）的表达情况,探讨胎盘滋养细胞ErbB1表达与子痫前期的关系。方法采用RT-PCR法及免疫组织化学法检测20例正常妊娠妇女（正常妊娠组）与34例子痫前期患者（子痫前期组）胎盘ErbB1的表达。结果在子痫前期患者胎盘中,ErbB1表达明显高于正常妊娠组,两者相比差异有统计学意义（P〈0.05）。结论胎盘中ErbB1表达的升高与子痫前期的发生密切相关。     

子痫前期胎盘低氧诱导因子1α的表达及其与血清胎盘生长因子的相关性

目的检测正常晚期妊娠和子痫前期患者胎盘低氧诱导因子1α(H IF-1α)和血清胎盘生长因子(P lGF)的水平,探讨它们的相关性及与子痫前期发病的关系。方法免疫组织化学SP法检测40例子痫前期患者及20例正常晚期妊娠胎盘H IF-1α表达,酶联免疫吸附试验(ELISA)检测血清P lGF的水平。结果轻度子痫前期组与重度子痫前期组胎盘H IF-1α表达高于正常晚期妊娠组,两组血清P lGF低于正常晚期妊娠组,差异均有显著性意义(P<0.05)。胎盘H IF-1α的表达与血清P lGF水平呈负相关关系。结论子痫前期患者血清P lGF水平依赖于胎盘H IF-1α表达,两者可能与子痫前期的发病有一定关系。     

子痫前期患者胎盘组织PLGF表达及血清HGF和VEGF测定

目的：探讨子痫前期患者血清肝细胞生长因子（HGF）、胎盘生长因子（PLGF）表达水平和血管内皮生长因子（VEGF）水平的变化及意义。方法：分别采用放射免疫分析、酶联免疫分析和免疫组化法测定32例子痫前期孕妇（子痫前期组）和35名正常孕妇（对照组）血清VEGF、HGF和PLGF表达水平。结果：子痫前期患者无论轻度子痫前期组和重度组血清HGF含量均显著低于对照组（P均〈0.01）;但轻度和重度组之间水平无显著性差异（P〉0.05）。胎盘中PLGF表达水平也显示轻度和重度两组均显著低于对照组（P均〈0.01）;且重度组又显著低于轻度组（P〈0.01）。血清VEGF水平轻度组显著低于对照组（P〈0.05）;重度组水平较对照组降低更为显著（P〈0.01）,且重度组显著低于轻度组（P〈0.01）。相关分析显示,HGF含量与PLGF具有显著相关性（r=0.6012,P〈0.01）;而与VEGF水平则无明显相关性（r=0.3010,P〉0.05）。结论：测定结果证实,患者血清三项标志物均参与了子痫前期的病理进程,其测定对于了解病情和预后评估有帮助。     

KiSS-1在子痫前期患者胎盘组织中的表达及意义

目的探讨肿瘤转移抑制基因KiSS-1是否是子痫前期的发病机制。方法采用免疫组化SP法检测25例正常足月妊娠妇女(正常妊娠组)与40例子痫前期患者(子痫前期组,其中轻度子痫前期15例、重度子痫前期25例)胎盘组织中KiSS-1的表达。结果KiSS-1主要位于胎盘绒毛小叶的合体滋养细胞。子痫前期组胎盘组织中KiSS-1的平均光密度为(0.137±0.010),其中轻度子痫前期为(0.132±0.004),重度子痫前期为(0.140±0.012);均明显高于正常妊娠组的(0.124±0.010),P值分别为P<0.01、P<0.05(P=0.019)、P<0.01。结论胎盘组织中KiSS-1的表达水平随病情程度的加重而增高,可能与子痫前期的发病有关。     

胎盘生长因子在子痫前期早期诊断中的临床价值

目的 探讨外周血浆中胎盘生长因子（PLGF）对子痫前期（PE）患者的早期预测意义。方法 选取天津市第三中心医院收治的105例正常妊娠妇女（对照组）、69例轻度PE患者（轻度组）及54例重度PE患者（重度组）为研究对象,采用荧光免疫分方法测定血浆中PLGF的浓度。使用ROC曲线分析PLGF,预测PE发生的灵敏度和特异度。结果 重度组患者血清PIGF水平低于轻度组和对照组,且轻度组低于对照组,差异均有统计学意义（P＜0.05）。ROC曲线分析显示,血清PIGF水平在预测PE发生中,曲线下面积0.962（95%CI:0.921~1.000,P＜0.05）,取截点值47.5 pg/ml,特异度为0.907,敏感度为0.900。结论 PE患者外周血PLGF水平明显降低,PLGF水平与疾病严重程度呈负相关,PLGF或许可以作为早期筛选PE患者的方法之一,预防和控制PE,为母婴安全提供帮助。     

登革热患者血清白细胞介素-8的变化及其临床意义

登革热(Dengue fever)的发病机理目前仍不十分明确,但大多数学者认为,除了登革病毒直接损害血管内皮细胞外,主要是因为登革病毒与机体产生的抗登革热病毒抗体形成免疫复合物,激活补体,从而引起一系列的免疫病理反应而造成机体组织和器官的损害,至目前为止,尚未见有关登革热患者血清细胞因子变化的报道,本研究旨在通过检测登革热患者血清白细胞介素-8(Interleukin-8,IL-8)的含量,了解登革热患者血清IL-8的变化及其临床意义,并初步探讨IL-8在登革热发病机理中的作用。     

白细胞介素及肿瘤坏死因子基因超家族在先兆子痫胎盘中的表达

为探讨白细胞介素和肿瘤坏死因子 (受体 )超家族基因表达与先兆子痫病理发生的关系 ,以包含 2 4 3种人类细胞因子相关基因cDNA片段的基因芯片 ,检测严格配对的先兆子痫和正常胎盘组织中基因表达谱的差异。结果显示受检的白细胞介素和 (或 )白细胞介素受体基因共 2 2种 ,绝大多数基因在先兆子痫胎盘中的表达增强 ,而IL 2受体 (IL 2Rα )基因 (Gen Bank :X0 10 5 7)在先兆子痫胎盘中的表达低于正常胎盘。肿瘤坏死因子 (GenBank :X0 2 910 )及其配体 (GenBank :U0 3398、U375 18、AF0 5 3712、AF0 5 5 872 )、受体 (GenBank :X6 0 5 92、X6 3717、M835 5 4、AF0 16 2 6 6、AF0 16 2 6 7、U812 32 )等 10余种肿瘤坏死因子 (受体 )超家族基因在先兆子痫胎盘中的表达也较高。说明 ,白细胞介素及肿瘤坏死因子 (受体 )基因超家族的高表达可能与先兆子痫的病理发生关系密切     

Localisation of Placenta Growth Factor (PlGF) in Human Term Placenta

Abstract

Placenta growth factor (PlGF) is a growth factor which belongs to the vascular endothelial growth factor (VEGF) family and is known to bind to the fms-like tyrosine kinase receptor (flt-1). Using Western blot analysis a 50 kDa band was identified in placental protein extract which corresponded to PlGF homodimer. Immunoreactive PlGF was localised to the vasculosyncytial membrane and in the media of large blood vessels of the placental villi, while staining within the mesenchyme was weak and diffuse. There was moderate staining for PlGF in discrete cells in the chorion and no staining in the epithelial layer of the amnion. The maternal decidual cells showed strong staining for PlGF immunoreactive protein. PlGF mRNA was predominantly expressed by the vasculosyncytial membrane of villous trophoblast, whilst there was no apparent expression of PlGF mRNA within the villous mesenchyme. These results suggest that PlGF may be an important paracrine factor for vascular endothelial cells in placental angiogenesis and an autocrine mediator of trophoblast function.     

轴突导向因子-1在胎儿生长受限胎盘组织中的表达及意义

目的：探讨神经轴突导向因子?1（ netrin?1）在胎儿生长受限患者胎盘组织中的表达变化。方法分析33例胎儿生长受限患者（其中18例为胎儿生长受限合并妊娠期高血压患者）及24例正常妊娠孕妇相关数据,并利用Real time?polymerase chain reaction （ RT?PCR）和Western印迹检测netrin?1在胎盘组织中的表达差异。结果①临床数据显示胎儿生长受限患者与正常孕妇在年龄、孕周、体重指数、血压、胎盘重量和出生体重等方面存在显著差异（ P＜0．05或P＜0．01）;②免疫组化结果显示netrin?1在胎盘中存在表达。③ RT?PCR及蛋白质印迹法显示胎儿生长受限患者胎盘组织中netrin?1的表达明显降低。结论 ne?trin?1表达降低可能是导致宫内胎儿生长受限的机制之一。     

Vascular Endothelial Growth Factor Is Increased in Patients With Preeclampsia

PROBLEM: This study was conducted to determine whether altered levels of vascular endothelial growth factor (VEGF) may play a role in the pathogenesis of preeclampsia. METHOD OF STUDY: Maternal plasma samples were collected from 19 patients with preeclampsia (group A) either before the onset of labor, or before induction of labor or medical intervention. Plasma samples were also obtained from 19 normotensive patients with uncomplicated pregnancies (group B), who were matched with the patients with preeclampsia for gestational age and parity. Samples were frozen at ?70°C until assayed for VEGF by a specific enzyme-linked immunoassay. RESULTS: The mean maternal age was similar in groups A and B. For both groups the VEGF was detectable in all plasma samples. However, the plasma concentrations of VEGF were significantly increased in the group A patients, compared with those in group B (median, 47ng/ml; range, 10.6–72 ng/ml versus median, 13.6 ng/ml; range, 0.66-20 ng/ml; P < 0.001). In group A, a positive correlation was noted between VEGF concentrations and the systolic and diastolic blood pressure (r = 0.56; P = 0.01 and r = 0.48; P = 0.037, respectively). CONCLUSIONS: Maternal plasma VEGF levels were elevated in the patients with preeclampsia and correlated with the severity of hypertension, suggesting a role for VEGF in the pathogenesis of preeclampsia.     

Pathogenetic Implication of Interleukin-2 Expressed in Preeclamptic Decidual Tissues: A Possible Mechanism of Deranged Vasculature of the Placenta Associated with Preeclampsia

PROBLEM: The purpose of this study is to clarify whether IL-2 expressed in the decidua in preeclampsia affects the angiogenesis of the placenta. METHOD OF STUDY: We investigated the angiogenic substances released from human trophoblasts obtained from early pregnancy that had been pretreated with either IL-2, non-activated lymphocytes from peripheral blood mononuclear cells (PBMCs), decidual lymphocytes, or these lymphocytes activated by lymphokine (LAK cells). Angiogenic activity was determined by evaluating the ability of growth-promotion of cultured human microvascular endothelial cells (HMvECs) using MTT assay. RESULTS: Trophoblasts pretreated with IL-2 or non-activated lymphocytes, irrespective of their origin, released angiogenic factor similar to those without pretreatment. However, trophoblasts pretreated with LAK cells released less angiogenic factor compared with those without pretreatment. CONCLUSIONS: Interleukin-2 (IL-2) expressed in preeclamptic decidua might reduce the angiogenic substances arising from trophoblasts by inducing LAK cells from decidual lymphocytes, which might be relevant to deranged vasculature of the placenta, a characteristic histology in preeclampsia.     

Localisation of Hepatocyte Growth Factor and its Receptor (c-met) Protein and mRNA in Human Term Placenta

Abstract

Successful pregnancy depends upon placental growth and development, which follows a specific spatial and temporal sequence. Hepatocyte Growth Factor (HGF) is a potent mitogen, morphogen and motogen to both endothelial and epithelial cell types and is linked to a tyrosine kinase, proto-oncogene, c-met receptor. In ‘normal’ third trimester placentae (n=5) full thickness biopsies (obtained at Caesarean section), immunolocalisation and in situ hybridisation studies were performed for HGF and c-met, respectively. HGF immunoreactive protein was present in mesenchymal core, the vaculosyncytial membrane (syncytotrophoblast) and the vascular endothelial cells of villous trophoblast. The HGF mRNA was present particularly strongly in the perivascular stromal cells surrounding the villous vasculature and the amnion/chorionic membranes. Immunoreactive c-met protein was strongly localised to the endothelial cells lining the villous vasculature and the vasculosyncytial membrane. A relatively weak and diffuse hybridisation signal for c-met mRNA was present throughout the villous trophoblast, most pronounced in the vasculosyncytial membrane. These results indicate that HGF may serve as a paracrine mediator to control placental development and growth.     

肺癌患者血清IL-6,IL-8和TNF活性测定的临床意义

目的 :探讨了肺癌患者血清中IL - 6、IL - 8和TNF含量的变化。方法 :应用酶联免疫吸附法和放免法测定了 4 0例肺癌患者血清中IL - 6、IL - 8和TNF含量 ,且与 35名正常健康人作比较。结果 :肺癌患者血清中IL - 6、IL - 8和TNF水平均非常显著地高于正常人 (P <0 0 1) ,术后IL - 6、IL - 8和TNF水平下降。结论 :测定肺癌患者血清中IL - 6、IL - 8和TNF含量对判断患者的免疫状态有一定的临床价值。