脐血干细胞移植干预妊娠期高血压模型大鼠的作用

BACKGROUND:With the depth understanding of mesenchymal stem cells, mesenchymal stem cells are found to exert a prominent effect on immune regulation and anti-inflammation. OBJECTIVE:To investigate the therapeutic effect of umbilical cord blood stem cell transplantation on endotoxin-induced hypertension in pregnant rats. METHODS:Twenty-four pregnant Sprague-Dawley rats were randomized into three groups with eight rats in each group: control, model and experimental groups. Endotoxin-induced hypertension models were made in the model and experimental groups. Meanwhile, rats were given intravenous injection of umbilical cord blood stem cell suspension (1 mL) in the experimental groups and the same volume of normal saline in the control and model groups. Therapeutic effects of umbilical cord blood stem cell transplantation were observed through detection of systolic blood pressure, urine protein level, serum white blood cell quantity and Ang II and ET-1 expression. RESULTS AND CONCLUSION:Compared with the control group, the systolic blood pressure, urine protein level and serum white blood cell quantity of rats were increased significantly in the model group, and over time, endotoxin continuously promoted these parameters in the model group. After cell transplantation, a significant reduction in systolic blood pressure, urine protein level and serum white blood cell quantity of rats was found in the experimental group compared with the model group (P < 0.05). After modeling, the expression levels of Ang II and ET-1 were decreased significantly, while these levels were increased significantly after cell transplantation (P < 0.05). These findings indicate that umbilical cord blood stem cell transplantation may have a certain therapeutic effect on gestational hypertension in rats, which may be realized by regulating the secretion of endothelial injury-related factors.     

HPV检测在宫颈疾病诊治中的研究进展

宫颈癌是女性生殖系统最常见的恶性肿瘤,其发病原因尚未完全清楚,目前公认宫颈癌的发病与人乳头瘤病毒(HPV)感染有关,持续的高危型HPV感染是引起宫颈病变的主要病因,对高危型HPV的检测和治疗已成为筛查宫颈癌前病变、预防宫颈癌的重要手段.该文围绕HPV感染与宫颈病变的关系,HPV病毒载量、分型与宫颈病变严重程度的关系以及其在评估治疗效果、判断预后、指导细胞学阳性患者分流等方面的临床价值,HPV疫苗等的研究进展作以综述.     

TCT、HPV、阴道镜下活体组织检查及LEEP术在宫颈疾病筛查中的临床价值

目的:以病理组织学为确诊标准探讨TCT、HPV、阴道镜下活体组织检查(活检)及LEEP术在宫颈疾病筛查中的临床价值。方法:收集2010年1月～2011年5月于郑州大学第三附属医院妇科门诊行阴道镜下活检的989例患者,比较其TCT、HPV及组织病理学结果,对TCT与组织学结果不符的114例进一步行LEEP手术并送病理。结果:TCT诊断宫颈疾病的敏感性、特异性、阳性预测值、阴性预测值、漏诊率分别为91.32%、68.78%、42.98%、97.01%、5.12%。HPV的阳性检出率64.65%,感染率与病理级别呈正相关,HPV负荷量在宫颈上皮内瘤变明显高于宫颈炎,差异有统计学意义(P<0.05)。阴道镜下活检与LEEP术后病理、级别下降30例,上升44例。结论:TCT联合HPV-DNA检测能提高宫颈病变的检出率,HPV-DNA的定量检测有助于细胞学阳性患者的分流,LEEP术可在一定程度上弥补活检的不足,提高宫颈病变的诊断率。