妊高征患者子宫胎盘床螺旋动脉的彩色多普勒超声检测

目的 :探讨妊高征患者子宫胎盘床螺旋动脉的血流动力学改变。方法 :应用彩色多普勒超声对 14对按 1∶1配对的妊高征组和正常妊娠组共 2 8例孕妇 ,在未行任何治疗前 ,检测子宫动脉及子宫胎盘床中央及边缘的螺旋动脉的PI、RI ,并动态监测至分娩。结果 :妊高征组子宫动脉、螺旋动脉的PI、RI值明显高于正常妊娠组 ,并以螺旋动脉更明显 ,P <0 .0 1。子宫胎盘床边缘的螺旋动脉RI、PI无论在妊高征组还是在正常妊娠组都高于子宫胎盘床中央的螺旋动脉RI、PI。结论 :彩色多普勒超声检测子宫胎盘床螺旋动脉血流状况对妊高征的发生发展有预测作用 ,并优越于子宫动脉。     

妊娠高血压综合征患者胎盘床血管内皮素(ET-1)的表达与临床意义

目的:观察妊娠高血压综合征(妊高征)患者胎盘床螺旋动脉血管内皮素(ET-1)的表达情况,探讨妊高征的发病机理.方法:收集正常妊娠病例30例、妊高征70例(其中轻度30例,中度20例,重度20例),采用免疫组织化学方法观察妊高征和正常妊娠胎盘床蜕膜段和肌层螺旋动脉ET-1的表达情况.结果:ET-1在妊高征胎盘床蜕膜段螺旋动脉内皮细胞的表达与正常妊娠无明显差别(P＞0.05),ET-1在妊高征胎盘床肌层螺旋动脉内皮细胞的表达明显高于正常妊娠(P＜0.05).结论:妊高征时肌层螺旋动脉内皮细胞分泌内皮素明显增多,提示妊高征的发生可能与内皮素的分泌增多有关.     

血管细胞粘附分子与妊娠高血压综合征发病的关系

随机选取妊娠的高血压综合征 (妊高征 ,PIH) 2 5例 (其中轻度 8例 ,中度 8例 ,重度 9例 ) ,为PIH组 ,另选正常孕妇 30例 ,为正常孕妇组。采用酶链免疫吸附试验 (ELISA法 )测定两组产妇临产前及产后 1周血清中VCAM 1的水平 ,同时应用免疫组化Envision法检测其相应胎盘组织中VCAM 1的表达。结果 :妊高征组产前血清VCAM 1浓度 (1383.6 0± 12 1.89ng/ml)显著高于正常孕妇组 (10 5 2 .0 7± 90 .37ng/ml,P <0 .0 0 1) ,而妊高征组产后血清VCAM 1水平 (90 6 .6 8± 82 .2 9ng/ml)与产前血清相比 ,明显下降 (P均 <0 .0 0 1) ;VCAM 1主要表达在胎盘滋养叶细胞及血管内皮细胞 ;PIH组胎盘滋养叶细胞表达率低于正常孕妇组 (P <0 .0 1) ,而血管内皮细胞表达妊高征组高于正常孕妇组 ,但P >0 .0 5。结果表明 ,PIH患者血清VCAM 1浓度的升高、胎盘血管内皮细胞VCAM 1表达率的升高及胎盘滋养层细胞缺乏VCAM 1的表达可能与PIH的发生、发展有关。     

妊高征合并胎儿宫内发育迟缓者胎盘病理改变与血管细胞粘附分子—1表达水平的关系

目的：探讨妊高征（PIH）合并胎儿宫内发育迟缓（IUGR）时胎盘病理改变与胎盘组织中血管细胞粘附分子－1（VCAM－1）表达水平变化的关系，方法：选取本院2001年1－9月分娩的妊高征合并IUGR患者（实验组）胎盘30例，单纯IUGR（IUGR组）28例，单纯PIH（PIH组）25例，正常妊娠（正常妊娠组）30例，常规HE染色及PAS染色，观察胎盘形态学变化，利用免疫组化方法对胎盘组织切片染色，观察子宫蜕膜层中螺旋动脉，绒毛组织滋养细胞及绒毛中毛细血管的VCAM－1表达，结果：实验组中22例（73．33％）胎盘有明显病理改变，有病理改变的胎盘蜕膜组织内血管内皮细胞及胎盘绒毛毛细血管内皮VCAM－1的表达显著高于无病理改变者（P＜0．001），而绒毛上皮组织滋养层细胞VCAM－1的表达则显著低于无病理改变者（P＝0．019），结论：妊高征合并IUGR时胎盘发生了明显的病理改变，这种病理改变与胎盘中VCAM－1的异常表达密切相关。     

VEGF及其受体在妊娠高血压综合征胎盘的表达

①目的探讨血管内皮生长因子（VEGF）在妊娠高血压综合征（妊高征）发病中的作用。②方法以免疫组织化学方法观察VEGF及其受体酪氨酸激酶-1（FI，T-1）在正常妊娠及妊高征胎盘绒毛中的表达。③结果VEGF主要表达于胎盘绒毛滋养叶细胞；FLT-1在胎盘中表达于滋养叶细胞、绒毛间质和血管内皮细胞；妊高征组胎盘中VEGF、FLT-1的表达均较正常晚期妊娠组弱，差异有显著性（t=2．358、2．447，P〈0．05）。④结论胎盘中VEGF及FLT-1表达的降低，可能致胎盘浅表着床，从而可能诱发妊高征。     

细胞间粘附分子-1在妊高征子宫蜕膜及胎盘中的表达

为探讨细胞间粘附分子-1(ICAM-1)在妊高征子宫蜕膜及胎盘中的表达,在20例正常妊娠及24例中、重度妊高征患者中,以选择性剖宫产取其子宫蜕膜及胎盘,用免疫组织化学方法检测其ICAM-1的表达,发现妊高征子宫蜕膜的血管中可见ICAM-1阳性的滋养细胞侵人,且这些血管周围有淋巴细胞浸润(P<0.05);胎盘合体滋养细胞染色明显强于正常妊娠(P<0.001).结果表明ICAM-1阳性滋养细胞侵入蜕膜血管伴血管周围淋巴细胞浸润,以及胎盘合体滋养细胞ICAM-1表达增强.提示ICAM-1介导的免疫机制在妊高征的发病中可能有重要作用.     

异常妊娠

040088妊娠高血压综合征患者血清和胎盘组织中血管细胞猫附分子一1表达的研究厂王福玲…//中华妇产科杂志一2003,38(10).一币33一634 采用酶联免疫吸附试验和免疫组化Pictur通用二步法,检测了49例妊高征患者(妊高征组)及35例正常初孕妇女(正常妊娠组)血循环中的可溶性血管细胞戮附分子一1(VCAM一l)的水平,以及VCAM一1在胎盘组织螺旋动脉中的表达,探讨其与妊高征发病的关系。结果:血清VCAM一1水平正常妊娠组为(448.7土156.0)mg几,妊高征组为(933 .9士573 .8)mg几,差异极显著(P(0.01)。随着病情加重,妊高征组血清VCAM一1水平呈升高趋…     

妊高征患者胎盘滋养细胞Fas及FasL表达的研究

目的探讨妊娠高血压综合征(妊高征)患者胎盘滋养细胞Fas及FasL的表达及意义.方法采用免疫组织化学法观察25例妊高征患者(妊高征组)胎盘Fas及FasL的表达及其与妊高征病情及新生儿出生体重的关系,并与25例正常妊娠妇女(正常妊娠组)比较.结果Fas及FasL主要表达于胎盘绒毛合体滋养细胞及细胞滋养细胞的胞膜及胞浆内.与正常妊娠组比较,妊高征组胎盘FasL表达显著降低(P＜0.05),轻度,中度,重度妊高征患者胎盘FasL表达,差异有显著性,而妊高征组滋养细胞表达Fas的水平却显著增加(P＜0.05)且轻度与中度及重度比较,差异有显著性.妊高征组胎盘Fas及FasL的表达与新生儿出生体重均无明显相关性.结论妊高征患者胎盘滋养细胞Fas及FasL表达失衡,通过免疫途径诱导滋养细胞发生级联凋亡反应,可能与妊高征的病因及病理过程有关.     

妊高征胎盘床螺旋动脉的形态学改变

目的：观察妊高征胎盘螺旋动脉的形态学改变。方法：按照Robertsony方法,获取胎盘床活检标本,在光学显微镜下观察妊高征组与正常妊娠组胎盘床螺旋动脉的生理性变化。结果：正常妊娠组与妊高征组胎盘床蜕膜螺旋动脉的生理性改变无显著差异,妊高征组肌层螺旋动脉的生理性改变明显少于正常妊娠组。结论：妊高征的发生与肌层螺旋动脉生理性改变减少有关。     

妊娠高血压综合征患者血浆及胎盘绒毛组织肿瘤坏死因子-α(TNF-α)的表达

目的探讨肿瘤坏死因子-α在妊高征发病机制中的作用.方法采用放射免疫测定方法检测59例妊高征患者和21例正常妊娠妇女血浆TNF-α的含量.用免疫组织化学法,检测妊高征患者及正常妊娠胎盘绒毛组织TNF-α的表达.结果妊高征组血浆TNF-α水平比正常妊娠组增高,P＜0.05.且随妊高征病情的加重呈上升趋势.但轻度妊高征与正常妊娠组之间差异无显著性,P＞0.05.中、重度妊高征与正常妊娠组比较差异显著,P＜0.05.胎盘绒毛合体滋养细胞有TNF-α的表达,且妊高征组胎盘绒毛组织合体滋养细胞TNF-α的表达明显高于正常对照组.结论TNF-α在妊高征的发病中起重要作用.     

妊高征患者蜕膜组织粘附分子表达的变化

目的分析妊高征(PIH)患者蜕膜粘附分子表达的变化。方法分别取PIH(30例)和正常足月妊娠(23例)病例产后蜕膜,免疫组化SP法进行VCAM-1、P-选择素、L-选择素、E-选择素染色分析。结果VCAM-1主要表达于蜕膜血管内皮细胞膜,合体滋养细胞和间质细胞均未见表达;三种选择素主要定位于蜕膜血管内皮细胞、合体滋养细胞、间质细胞胞浆和胞膜。PIH组VCAM-1及P-选择素表达阳性的病例百分率明显高于正常妊娠组(分别为73.3%vs30.4%,P<0.01;83.3%vs43.5%,P<0.05),其中,中、重度PIH组明显高于轻度和正常妊娠组(分别为P<0.01,P<0.05);E-选择素、L-选择素的表达在各组间均无显著性差异(均P>0.05)。结论VCAM-1和P-选择素在PIH蜕膜中的表达明显升高,且表达水平与疾病严重程度相关;患者存在蜕膜局部血小板活化,P-选择素可能参与了PIH胎盘缺血缺氧病理损伤机制;PIH体内粘附分子水平变化在疾病的形成中可能发挥了重要作用。     

The Expression of PLF in Placenta in Pregnancy-Induced Hypertension and the Relationship between the PLF and Serum VCAM-1

Summary:To study the expression of placental isoferritin(PLF)in placental tissue of pregnancy-in-duced hypertension(PIH)and the relationship between the level of expression of PLF and theamount of vascular cell adhesion molecule-1(VCAM-1)in serum,immunohistochemical techniquewas used to detect the expression of PLF in placenta tissue in 45 PIH patients(PIH group)and 15normal pregnant women(normal group).High resolution pathological image analysis system(HPIAS-100)was employed to determine the quantity of PLF.The VCAM-1 in serum was exam-ined by enzyme linked immunoabsorbent assay(ELISA).The results showed that the levels of PLFexpressions in moderate and severe PIH patients were significantly lower than that of normal group(P<0.01).The serum VCAM-1 was significantly decreased in PIH group(1310±177ρ/mg/ml)than that of normal group(609±72ρ/ng/ml,P<0.01).The significant negative correlation exist-ed betweene the expression of PLF in placental tissue and the serum VACM-1(r=0.58,P<0.01).It was concluded     

瘦素与肿瘤坏死因子在妊娠高血压综合征发病中的关系

目的探讨瘦素和肿瘤坏死因子(TNF-α)在妊娠高血压综合征(妊高征)发病中相互关系。方法采用放射免疫法测定34例妊高征患者(妊高征组)的外周血清瘦素及TNF-α水平,并以20例正常晚期妊娠妇女(正常妊娠组)为对照。将血清瘦素水平与TNF-α、肌酐、尿酸水平进行相关分析。结果(1)妊高征组血清瘦素水平为32.85±11.46ng/ml,明显高于正常妊娠组(18.92±3.03ng/ml,P<0.05);轻度妊高征组血清瘦素水平为21.98±4.83ng/ml,与正常妊娠组比较,差异无显著性(P>0.05);中、重度妊高征患者血清瘦素水平分别31.13±5.18ng/ml,41.84±10.90ng/ml,与轻度妊高征及妊娠正常组比较,差异显著(P均<0.05);轻、中、重度妊高征患者之间血清瘦素水平差异明显(P均<0.05)。妊高征患者的血清瘦素水平与肌酐、尿酸正相关(r分别为0.46、0.59,P均<0.01)。(2)妊高征组血清TNF-α水平为22.65±11.48fmol/ml,明显高于正常妊娠组(9.21±2.14fmol/ml,P<0.05);轻度妊高征患者血清TNF-α水平为11.51±4.12fmol/ml,与正常妊娠组比较,差异无显著性(P>0.05);中、重度妊高征患者血清TNF-α水平分别为19.46±7.41fmol/ml和32.89±8.31fmol/ml,与轻度妊高征及正常妊娠组比较,差异均有显著性(P均<0.05);轻、中、重度妊高征患者之间血清TNF-α水平差异明显(P均<0.05)。(3)妊高征组血清瘦素水平与TNF-α水平呈正相关(r=0.56,P<0.01)。结论妊高征患者血清TNF-α水平增高可能是导致血清瘦素水平升高的原因之一。     

妊娠高血压综合征患者胎盘组织中HIF-1α和HSP70的表达及其意义

目的：探讨缺氧诱导因子1α（HIF-1α）和热休克蛋白70（HSP70）在妊娠高血压综合征（妊高征）患者胎盘组织中的表达,阐明两者在妊高征患者胎盘组织中表达的临床意义。方法：收集妊高征患者胎盘组织22例（妊高征组）和正常孕妇胎盘组织18例（对组照）,采用免疫组织化学法检测2组孕妇胎盘组织中HIF-1α和HSP70的表达情况,分析两者阳性表达率在妊高征患者和正常孕妇胎盘组织中的差异及其在妊高征患者胎盘组织中的关系。结果：妊高征组患者和对照组正常孕妇胎盘组织中HIF-1α阳性表达率分别为81.8%和38.9%,妊高征组患者胎盘组织中HIF-1α阳性表达率明显高于对照组（χ²=7.785,P=0.005）;妊高征组患者和对照组正常孕妇胎盘组织中HSP70阳性表达率分别为90.9%和55.6%,妊高征组患者胎盘组织中HSP70阳性表达率明显高于对照组（χ²=6.599,P=0.010）。妊高征组患者中18例HIF-1α阳性表达的胎盘组织全部HSP70表达阳性（100.0%）,而4例HIF-1α阴性表达的胎盘组织有2例HSP70表达阴性（50.0%）,两者表达存在明显的正相关关系（r=0.671,P=0.001）。结论：妊高征患者胎盘组织中HIF-1α和HSP70呈高表达,且两者的表达呈正相关关系。     

Relationship between pathological changes and the expression of vascular cell adhesion molecule-1 in the placenta of patients with pregnancy-induced hypertension complicated by intrauterine growth retardation]

OBJECTIVE: To study the relationship of the pathological changes with the expression of vascular cell adhesion molecule-1(VCAM-1) in the placenta of patients with pregnancy-induced hypertension (PIH) that is complicated by intrauterine growth retardation (IUGR). METHODS: Tissue specimens of the placenta were respectively collected from 30 patients with PIH complicated by IUGR, 28 patients with IUGR, 25 patients with PIH and 30 normal women after delivery. After HE and PAS staining, the tissue sections were observed microscopically to detect morphological changes in the placenta. Immunohistochemical examination was employed to detect the expression of the VCAM-1 in the decidual vascular endothelium, syncytiotrophoblast and villous capillary vessel of the placenta in these tissue specimens. RESULTS: Significant pathological changes were observed in 22 placentas of the patients with PIH complicated by IUGR, with the incidence of 73.33 %. The pathological changes exemplified by stromal fibrosis, fibrinoid necrosis and leucocyte infiltration of the villi, increase in villous syncytial nodules, decrease in villous vascular tissues, hyperplasia of cytotrophoblasts and basal lamina thickening were more prevalent in the placentas of patients with PIH complicated by IUGR than in normal women (P<0.05). The expression of VCAM-1 in the decidual vascular endothelium and placental villous capillary vessels was observed to be significantly higher in the placentas with pathological changes than in those without (P<0.05), which was the opposite to the changes in the expression in the syncytiotrophoblast (P<0.05). CONCLUSION: Significant pathological changes can be present in the placenta of patients with PIH complicated by IUGR, and may be intimately related to abnormal expressions of VCAM-1 in the placenta.     

Expression of TGF-β1 in Placenta of the Patients with Pregnancy-induced Hypertension and Its relationship with Serum VCAM-1

The expression of transforming growth factor-β1 (TGF-β1) in placental tissue of pregnancy-induced hypertension (PIH) and the relationship between the level of expression of TGF-β1 and the amount of vascular cell adhesion molecule-1 (VCAM-1) in serum was studied. Immunohistochemistry ABC was used to detect the expression and distribution of TGF-β1 in placental tissues in 40 PIH women and 20 normal pregnancy women. High resolution pathological image analysis system was used to determine the quality of TGF-β. The VCAM-1 in serum was examined by enzyme linked immunoabsorbent assay (ELISA). The results showed that TGF-β1 could be express in syncytiotrophoblast. The levels of TGF-β1 expression in placental tissues of the patients with moderate and severe PIH were significantly higher (P<0.05), while the serum VCAM-1 was significantly lower than in normal group (P<0.01). There was a significant positive correlation between the expression of the TGF-β1 in placental tissues and the serum VCAM-1 (r=0.969,P<0.01). It was concluded that the level of TGF-β1 expressin in PIH was increased and was positively correlated with the amount of serum VCAM-1, indicating that they might be involved in the pathogenesis of PIH.     

妊娠高血压综合征患者血浆粘附分子水平的变化

目的探讨细胞粘附分子在妊娠高血压综合征(PIH)的免疫学病因中所发挥的作用.方法PIH组和对照组各30例,采用双抗体夹心酶联免疫吸附法检测血浆可溶性血管细胞粘附分子(VCAM)、细胞间粘附分子(ICAM)、E-选择素、P-选择素、L-选择素水平的变化,并探讨其与血尿酸、血肌酐水平、血小板计数之间的相关性.结果与对照组相比,中、重度PIH患者血浆可溶性VCAM-1、E-选择素、P-选择素水平均明显升高(P＜0.05),轻度PIH组均未见显著差异(P＞0.05);PIH组血浆可溶性ICAM-1水平无明显升高(P＞0.05);中、重度PIH组血浆可溶性VCAM-1、P-选择素水平较轻度PIH明显升高(P＜0.05),而ICAM-1、L-选择素、E-选择素水平未见组间差异.与对照组相比,重度PIH患者血尿酸、血肌酐水平均明显升高,血小板计数明显降低(均P＜0.05),轻、中度PIH组无明显改变(P＞0.05);重度PIH患者血浆可溶性VCAM-1、E-选择素、P-选择素水平与血尿酸、血肌酐呈正相关,而P-选择素水平与血小板计数呈明显负相关.结论血浆可溶性VCAM-1、E-选择素、P-选择素水平变化可作为确定终止妊娠时机的参考指标;VCAM-1、P-选择素水平变化可作为中度P1H的检测指标;P-选择素、E-选择素水平变化可能具有较血尿酸、血肌酐更敏感的代表疾病严重程度倾向的作用.