高强度聚焦超声体外治疗恶性实体肿瘤的临床安全性研究

目的：研究高强度聚焦超声（HIFU）体外治疗恶性实体肿瘤的临床安全性。方法：HIFU体外治疗恶性实体肿瘤患者164例,观察治疗过程中,治疗后的全身和局部的变化。结果：治疗中,治疗后患者生命体征稳定,主要器官功能基本正常;局部瘤灶无破裂或出血,无黄疸或胆汁漏溢,未发现瘤灶邻近脏器或血管损伤,结论：HIFU体外治疗恶性实体肿瘤是安全的。     

超声治疗慢性宫颈炎的短期病理变化研究

目的 研究慢性宫颈炎超声治疗后短期内的病理学变化，旨在探讨超声治疗慢性宫颈炎的安全性和有效性。方法 子宫肌瘤合并慢性宫颈炎需行全子宫切除术的病人，在手术前对宫颈进行超声治疗，手术后进行宫颈的病理学检查。结果 治疗后局部变为乳白色坏死区。宫颈组织上皮、腺体和间质均见凝固性坏死，治疗区周围组织没有损伤变化或仅见充血带。结论 超声用于慢性宫颈炎临床治疗是有效和安全的。     

高强度聚焦超声治疗子宫肌瘤的病理学研究

目的探讨高强度聚焦超声(HIFU)治疗子宫平滑肌瘤的组织病理学改变。方法20例因子宫平滑肌瘤需要做子宫全切除术的患者，经患者知情同意后，使用HIFU对平滑肌瘤进行定时定量直线扫打；切除子宫后立即取靶区组织行TTC(三苯基氯化四氮唑)染色，光镜和电镜观察。结果20例标本照射靶区组织变硬、变白；TTC染色为白色，与周边组织分界清楚；光镜和电镜显示平滑肌瘤细胞呈凝固性坏死。结论HIFU对在体人子宫平滑肌瘤细胞具有肯定的杀灭作用，可能成为未来子宫平滑肌瘤无创性治疗的新技术。     

微阵列芯片法在抗呼吸道病原体IgM抗体检测中的应用

为评价微阵列芯片法对呼吸道病原体IgM检测的效能及其在诊断近期呼吸道感染中的临床应用价值,以微阵列芯片法(microarray)和ELISA检测1 463例疑似呼吸道病毒感染者(病例组)和806例非呼吸道病原体感染者或健康体检者(阴性对照组)的血清样本.结果显示,与ELISA相比,微阵列芯片法检测结果如下:腺病毒(ad...     

细菌性阴道病及其生化标志物检查

细菌性阴道病（bacterial vaginosis,BV）是指一类女性生殖道正常菌群数量减少,阴道加德纳菌及厌氧菌等细菌数量增加所致临床症候群,是阴道微生态失衡所致的一种混合感染。BV是育龄妇女最常见的生殖道感染疾病,对妇女的健康危害很大。对BV进行系统性筛查和针对性治疗可有效降低相关疾病发生的机会。而BV主要是通过实验室诊断,因此,快速准确的BV检测方法对于本病的诊断尤为重要。本文就BV实验室检查的生化标志物及其检测方法和意义、使用阴道生化标志物应注意的几个问题进行简要综述。     

兔肝细胞的脾脏移植和定位初步研究

【目的】探讨肝细胞体内移植的途径和定位分析。【方法】从新西兰白兔的肝脏中分离获得原代肝细胞,经纯化培养后经脾动脉插管或注射移植到脾脏,在不同时间注射肝细胞特异性增强剂（扎贝葡胺）,观察移植后脾脏核磁信号的变化和移植肝细胞的存活,并分析细胞移植前后肝功能变化。【结果】肝细胞移植入脾脏一段时间后受损肝功能明显改善。脾脏内可见肝细胞信号,d,信号最强,以后逐渐衰退并持续14d以上。【结论】肝细胞脾内移植是可行的;应用肝细胞增强剂进行MRl分析可成为肝细胞移植无创伤检测手段。     

Down-Regulation of Notch1 and NF-κB by Curcumin in Breast Cancer Cells MDA-MB-231

Objective  To test whether the down-regulation of Notch1 gene expression by curcumin could inhibit cell growth and induce apoptosis, which may be associated mechanistically with the down-regulation of NF-κB in breast cancer cells. Methods  Breast cancer cell lines MDA-MB-231 were cultured in vitro and treated with different dosages of curcumin (0, 1.25, 5.0, 20.0μmol/L) for dose-dependent assay and different time (0, 24, 48, 72 h) at the dosage of 5.0μmol/L for time course assay. The changes of the mRNA and protein expression of Notch1 and NF-κB were measured by RT-PCR and Western Blot, and MTT assay was used to measure the change of proliferation. Results  The mRNA and protein levels of Notch1 and NF-κB were decreased significantly in human breast cancer cell line with the increase of dosage of curcumin(P<0.05), and with the extension of time course(P<0.05). These changes suggested a dose- and time-dependent manner. The proliferation rate of cells also was significantly inhibited(P<0.05). Conclusion  The current results show that the Notch-1 signaling pathway is associated mechanistically with NF-κB activity during curcumin-induced cell growth inhibition and apoptosis of breast cancer cells. These results suggest that the down-regulation of Notch signaling by curcumin may be a novel strategy for the treatment of patients with breast cancer.      

Down-Regulation of Notchl and NF-κB by Curcumin in Breast Cancer Cells MDA-MB-231

Objective:To test whether the down-regulation of Notch1 gene expression by curcumin could inhibit cell growth and induce apoptosis,which may be associated mechanistically with the down-regulation of NF-κB in breast cancer cells. Methods:Breast cancer cell lines MDA-MB-231 were cultured in vitro and treated with different dosages of curcumin(0,1.25,5.0,20.0μmol/L)for dose-dependent assay and different time(0,24,48,72 h)at the dosage of 5.0μmol/L for time course assay.The changes of the mRNA and protein expression of Notch1 and NF-κB were measured by RT-PCR and Western Blot,and MTT assay was used to measure the change of proliferation. Results:The mRNA and protein levels of Notch 1 and NF-κB were decreased significantly in human breast cancer cell line with the increase of dosage of curcumin(P＜0.05),and with the extension of time course(P＜0.05).These changes suggested a dose- and time-dependent manner.The proliferation rate of cells also was significantly inhibited(P＜0.05). Conclusion:The current results show that the Notch-1 signaling pathway is associated mechanistically with NF-κB activity during curcumin-induced cell growth inhibition and apoptosis of breast cancer cells.These results suggest that the down-regulation of Notch signaling by curcumin may be a novel strategy for the treatment of patients with breast cancer.     

等级实验小鼠Peyer氏斑的观察研究

本文对一级、三级实验小鼠的Peyer氏斑(Peyer’s patches．PP)在数量、大小、分布、结构及功能等方面作了比较研究和分析。结果表明,一级小鼠和三级小鼠的PP在数量和大小上有显著差别。一级小鼠的PP更发达,提示PP在小鼠胃肠粘膜免疫中起着重要作用：