siRNA沉默YAP1对宫颈癌Hela细胞增殖和侵袭的影响

目的:用小干扰RNA(siRNA)沉默宫颈癌Hela细胞中YAP1基因的表达,观察YAP1表达降低对细胞增殖和侵袭能力的影响,初步探讨YAP1在宫颈癌中的作用。方法:qRT-PCR和Western blot方法检测宫颈癌Hela细胞及正常宫颈上皮细胞H8中YAP1的表达,siRNA YAP1转染Hela细胞沉默YAP1表达,并以转染control siRNA的细胞作为对照,转染48h后,分别用qRT-PCR和Western blot方法检测沉默效果。用MTT法检测沉默后细胞增殖情况。Transwell 检测细胞侵袭能力。结果:YAP1在宫颈癌细胞中高表达。siRNA能够有效沉默Hela细胞中YAP1的mRNA 及蛋白的表达。沉默YAP1表达能够明显抑制Hela细胞的增殖及侵袭能力。结论:YAP1蛋白在宫颈癌细胞中高表达并具有促进细胞增殖及侵袭的能力。     

CD133和CD45在非小细胞肺癌组织中的表达及临床意义

目的 探讨CD133和CD45在非小细胞肺癌(NSCLC)组织中的表达及临床意义.方法 采用免疫组织化学SABC法检测65例NSCLC组织中CD133和CD45的表达,分析两者与肿瘤大小、组织学类型、TNM分期、组织分化程度及淋巴结转移之间的关系.结果 CD133和CD45在NSCLC组织中的阳性表达率分别为69.2％...     

痔上粘膜环切术治疗重度痔55例临床观察

目的研究吻合器痔上粘膜环切术（PPH）治疗重度痔的可行性及其意义。方法对55例重度痔行痔上粘膜环切术，并与55例行传统手术治疗的患者进行对比分析。结果PPH方法简单、手术时间短、出血少、住院时间短，随访1～10个月，术后并发症少，无复发。结论PPH应作为重度痔的首选手术方法。     

肝动脉注射阿霉素温度敏感脂质体的靶行为和治疗应用的研究

Temperature sensitive liposome entrapped adriamycin was injected into the hepatic artery of Wistar rats bearing implanted hepatic tumor. Two hours after the injection, the liver was heated to 42 ℃ and maintained at that temperature for 6 minutes using a local hyperthermia. The variation in the pattern of the concentration of the liposomal drug in circulation, and the drug distribution in tissues were investigated. Results indicated that adriamycin was released from the liposomes with the drug concentration peaking in circulation at 30 minutes after heating. Following the hyperthermia treatment, the total amount of drug in the liver decreased, while that in the tumor and urine increased. The ¹⁴C labeled liposome track test showed that a parallel relationship between the lipid and the drug was maintained for 8 hours after the hepatic injection, and physiological environment was a determinant of change and existence of liposomal carrier. However, the drug encapsulated in the liposomes can be controlled by hyperthermia to target the tumor. Therapeutic experiments showed that in the group treated with the hepatic artery- injected liposome plus hyperthermia control, the liver tumor growth of the rats administered at 7 days after W₂₅₆ carcinosarcoma implantation on liver was notably inhibited and the life-span of the animal was greatly extended compared with those of aqueous administration groups and ⅳ injected liposome group.     

温阳利水强心颗粒剂治疗慢性充血性心力衰竭60例临床疗效观察

"温阳利水强心颗粒剂"系我所在真武汤基础上,结合云南著名中医学家吴佩衡先生运用附子的经验,采用现代制剂工艺研制而成.具有温阳利水、强心益肾、通脉宁心之功,治疗慢性充血性心力衰竭(阳虚型).将100例符合要求病例随机分为治疗组60例,西药对照组40例进行对比观察,结果治疗组总有效率96.67%.对照组总有效率95%,治疗组与对照组P＞0.05,无显著性差异.中医舌脉总改善率治疗组53.33%,对照组32.5%,P＜0.05,有显著差异,说明温阳利水强心颗粒剂突出中医定性指标及辨证论治特色,不仅心功能得到有效改善,中医宏观疗效指标也得到明显改善,提高病人生存质量,减少心衰发作次数,显示了中药复方多环节、多靶点的整体调节优势.     

妇科疾患病变组织中癌抗原的分布及其意义

用抗小鼠宫颈癌单克隆抗体（Au14-1)对22种人妇科疾患（共46例）病理活检标本作辣根过氧化物酶抗辣根过氧化物酶法（PAP）染色，发现10例宫颈鳞状细胞癌中，8例阳性；2例阴性。6例不同类型的宫颈腺癌中4例为阳性，2例可疑；而宫内膜腺癌和慢性宫颈炎中的腺上皮及宫颈鳞癌中残余的正常腺体均为阴性，表明Au14-1可用于临床作为鉴别宫内膜腺癌与宫颈腺癌的一项较好的参考指标。     

膝内侧改良切口结合NT-pc治疗粉碎性髌骨骨折

目的 寻找一种有利于粉碎性髌骨骨折术中复位、固定和术后恢复的手术入路。方法 采用膝内侧改良切口结合NT-聚髌器(NT-pc)治疗粉碎性髌骨骨折38例，其中碎骨块呈3块者18例、4块者13例、5块者5例、6块者2例。结果 38例随访时间3个月—2年6个月，除1例因二次手术病程较长、1例术后缺乏锻炼致膝关节功能稍受影响外，其他患者膝关节活动均恢复正常，切口愈合好，按李纯志等疗效评定标准，优良率94．7％。结论 膝内侧改良切口具有充分显露髌骨、切口短、组织损伤小，有利于术中手指对骨块抚平复位和对关节面复位质量的检查及术后功能恢复；NT-pc符合张力带原理，对严重粉碎性髌骨骨折的骨折面具有持续的纵向及横向的应力作用，有复位及固定的双重作用。对于严重粉碎性髌骨骨折，采用内侧改良切口及NT-pc固定不失为一种较理想的方法。     

惊恐障碍、广泛性焦虑障碍病因学对比研究进展

惊恐障碍(PD)和广泛性焦虑障碍(GAD)是焦虑障碍的两种常见类型。既往研究发现PD和GAD具有相似的病因和发病机制,然而两者独特的临床特征可能存在不同的病理生理学改变,这些改变对两者之间的鉴别有重要的意义。本文通过对PD和GAD在心理学、血生化、遗传学、电生理及影像学方面的差异进行综述,为寻找鉴别PD和GAD的特异性标记提供参考。     

自体脂肪颗粒与尿激酶联合应用预防硬膜外粘连*

背景：椎板切除后,易发生硬膜外粘连。术后在硬膜外单独应用1种药品或隔离物,效果不甚理想。 目的：观察自体脂肪颗粒与尿激酶联合应用预防椎板切除后硬膜外粘连的效果。 方法：64只成年新西兰兔随机分为模型组、尿激酶组、自体脂肪颗粒组、尿激酶+自体脂肪颗粒组,各16只。手术切除L5椎板造成12 mm×5 mm 硬脊膜裸露区,探查神经根。模型组注入生理盐水,尿激酶组注入尿激酶(25 U/kg), 自体脂肪颗粒组用自体游离脂肪颗粒覆盖,尿激酶+自体脂肪颗粒组用尿激酶(25 U/kg)注入后再用自体游离脂肪颗粒覆盖。术后2,4周行大体观察及组织学观察,6 周时行硬膜外瘢痕面积定量分析。 结果与结论：模型组椎板切除部位明显粘连,尿激酶组、自体脂肪颗粒组轻度粘连,尿激酶+自体脂肪颗粒组无明显粘连。尿激酶组、自体脂肪颗粒组、尿激酶+自体脂肪颗粒组成纤维细胞数显著低于模型组(P < 0. 05),尿激酶+自体脂肪颗粒组成纤维细胞数低于尿激酶组、自体脂肪颗粒组(P < 0.05)。自体脂肪颗粒组、尿激酶+自体脂肪颗粒组瘢痕面积显著低于模型组、尿激酶组(P < 0.05),尿激酶+自体脂肪颗粒组瘢痕面积低于自体脂肪颗粒组。提示脂肪颗粒及尿激酶联合应用对预防椎板切除后硬膜外粘连具有协同作用,效果显著。     

Enhancement of humoral and cellular responses to HBsAg DNA vaccination by immunization with praziquantel through inhibition TGF-β/Smad2,3 signaling

Praziquantel (PZQ), which is used to treat all forms of schistosomiasis, has been shown to induce strong T cell activities and decrease T regulatory cell levels. In our study, we investigated whether PZQ may be used as an adjuvant for a hepatitis B surface antigen (HBsAg) DNA vaccine (pcD-S2) in eliciting strong humoral and cellular responses. Our data demonstrate that PZQ as an adjuvant increased T cell proliferation and an HBsAg-specific antibody response that was characterized by a higher ratio of IgG2a/IgG1. Moreover, a higher level of IFN-γ in CD4⁺ and CD8⁺ T cells were elicited. In addition, a significantly antigen-specific cytotoxic T lymphocyte response was also observed. The expression of TGF-β can be induced by HBsAg, while PZQ as an adjuvant can inhibit the expression of TGF-β and TGF-β/Smad2,3 signaling. The frequency of CD4⁺CD25⁺Foxp3⁺ Treg cells was reduced. Importantly, the regulatory function of CD4⁺CD25⁺ Treg cells was correspondingly impaired. Together, these results suggest that PZQ can enhance humoral and cellular responses to HBsAg DNA vaccination through inhibition TGF-β/Smad2,3 signaling.