TCRVβ7.1基因修饰T细胞对乳腺癌细胞杀伤作用的研究

目的：观察TCPVβ7．1基因转染前后正常人外周血淋巴细胞对乳腺癌细胞株杀伤活性的影响。方法：脂质体包裹PdWA3.1vβ7.1后转染健康人PBMC，流式细胞仪检测PdWA3.1Vβ7.1基因表达，改良MIT法检测TCRVβ7．1基因转染前后正常人外周血淋巴细胞对乳腺癌细胞株杀伤活性。结果：TCRVβ7．1基因转染可显著增加正常人PBMC该基因表达，转染前后正常人外周血淋巴细胞对乳腺癌细胞株杀伤活性有显著性差异。结论：用TCR基因修饰可明显提高正常人PBMC对乳腺癌细胞杀伤作用。     

一种平板流动腔重力灌流系统的力学分析

本文分析了一种采用重力灌流的平板流动腔灌流系统，并根据实验结果确定出相应的阻力系数，获得平板流动腔剪应力、雷诺数以及入口长度与流体重力灌流高度的关系。     

RPGRIP1s with distinct neuronal localization and biochemical properties associate selectively with RanBP2 in amacrine neurons

RPGR and RPGRIP1 are molecular partners with vital roles in retinal function. Mutations in RPGR are implicated in heterogeneous retinal phenotypes, while those in RPGRIP1 lead to Leber congenital amaurosis. RPGR and RPGRIP1s differentially localize in photoreceptors among species. This may contribute to phenotype disparities among species bearing mutations in RPGR. However, it cannot account for the phenotype heterogeneity associated with RPGR- and RPGRIP1-linked mutations in the human. The existence of RPGRIP1 isoforms with distinct cellular, subcellular localizations and biochemical properties in the retina is shown. High mass RPGRIP1 isoforms, p175/p150, enriched in the outer segment (OS) compartment of photoreceptors are identified. The remaining isoforms are present across subcellular fractions, including nuclei and are soluble. The p175/p150 are predominantly sequestered in the cytoskeleton-insoluble fraction of OS and nuclei. In selective amacrine cells, and in the transformed photoreceptor line, 661W, RPGRIP1s localize at restricted foci to nuclear pore complexes and/or the vicinity of these. Among the nucleoporins, RPGRIP1 isoforms selectively associate in vivo with RanBP2 (Nup358). RPGRIP1s also decorate microtubules in 661W cells and occasionally form coiled-like inclusion bodies in the perikarya. These results support distinct but complementary functions of RPGRIP1 isoforms in cytoskeletal-mediated processes in photoreceptors and amacrine neurons, and may explain the Leber phenotype linked to RPGRIP1 mutations in humans. Moreover, the data implicate a role of RanBP2 in the pathogenesis of neuro(retino)pathies and as a docking station to mediate the nucleocytoplasmic shuttling of RPGRIP1s and their interaction with other partners in amacrine and 661W neurons.     

Uterine fibronectin mRNA content and localization are modulated during implantation.

Fibronectin mRNA and protein content were examined during embryonic implantation in the rat uterus. Content of total fibronectin mRNA at day 6 of pregnancy increased relative to the non-pregnant uterus. In contrast, fibronectin protein content of the subepithelial stroma was relatively decreased except in the region directly surrounding the lumen, and this fibronectin immunoreactivity was sensitive to hyaluronidase treatment. These changes are likely to reflect the degradation and subsequent remodeling of the previously stable uterine extracellular matrix in preparation for embryonic implantation. A+, B-, V + fibronectin mRNAs were present in both the non-pregnant and day 6 pregnant uterus with increased content of A+ and V+ fibronectin mRNAs in the latter. A + fibronectin mRNA was distributed throughout the endometrial stroma of the non-pregnant uterus and content of the subepithelial stroma increased by day 4 of pregnancy, coincident with progesterone action on the endometrium. On day 6 of pregnancy, fibronectin mRNAs encoding the V95 and A regions were preferentially localized to the mesometrial zone of the subepithelial stroma. Accumulation of these mRNA splicing variants at the mesometrial zone was dependent upon decidualization, but the embryo was not required. Thus, there are two major changes in uterine fibronectin gene expression as a result of pregnancy: increased fibronectin mRNA content and mesometrial localization. These changes suggest a key function for fibronectin in implantation and imply the operation of a regulatory program of fibronectin gene expression which depends on hormonal sensitization and a nidatory stimulus.     

重庆市某三甲医院消毒供应中心纯化水细菌污染情况和消毒效果调查

目的了解重庆市某三甲医院消毒供应中心(CSSD)纯化水处理系统的细菌水平、消毒方法及效果。方法运用无菌技术采集重庆市某三甲医院CSSD不同时期的纯化水进行细菌培养,根据细菌培养、余氯、硬度检测结果对纯化水处理系统采取一系列措施以改善水质,并对各项措施的实施效果进行评价。结果该院CSSD纯化水存在细菌总数超标的情况,分别经过调整加盐量、更换水处理机耗材、安装含氯消毒剂加药装置并在水处理机制水时将5%84消毒液持续低流量泵入纯化水储水罐后,细菌总数明显降低,纯化水水质达标。结论该院纯化水存在细菌污染现象,医院应加强管理,CSSD需按时维护水处理设备,定期监测水质。     

手术联合术后放疗治疗瘢痕疙瘩的临床研究

目的：研究手术联合术后放疗治疗瘢痕疙瘩的临床效果。方法：瘢痕疙瘩85例,随机分为2组,实验组50例,采用瘢痕疙瘩切除缝合或植皮,术后即时放疗;对照组35例,仅行瘢痕疙瘩切除植皮。结果：术后随访6个月－3年,实验组40例（80％）治愈,无复发;5例（10％）轻度瘢痕增生,局部注射康宁克通－A后未复发;5例（10％）复发;对照组6例（17．14％）治愈,29例（82．86％）复发,实验组治愈率明显高于对照组。结论：手术联合术后放疗是治愈瘢痕疙瘩的有效方法。     

颈部囊肿与瘘管的诊断和治疗

目的：总结颈部囊肿与瘘管的诊治经验。方法：93例行手术治疗,其中鳃裂囊肿15例,鳃裂瘘管10例,皮样囊肿1例,囊状淋巴管瘤4例,甲状舌骨囊肿37例,甲状舌管瘘管25例,癌性淋巴液囊肿1例,随访1－10年。结果：93例中,囊性淋巴管瘤1例复发后失访,另1例行2次手术,癌性淋巴液囊肿1例半年后死于肺转移,鳃裂瘘管2例3次手术,甲状舌管瘘管1例复发,鳃裂瘘管术后1例迟发性面瘫,一次手术治愈,无术后并发症。结论：颈部囊肿与瘘管的诊断除依据术前检查外,主要是依据术中的发现和术后病理检查。B超、CT等是有效的辅助检查.手段治疗上应彻底切除囊壁与瘘管,避免复发。术中应避免损伤颈部的大血管和神经。甲状舌管瘘管须切除舌骨中段2cm,这是防止术后复发的关键。     

PCNA、p53及C—erbB—2在卵巢浆、液粘液性上皮瘤中的表达

目的 研究卵巢浆、粘液性上皮瘤PCNA、p53、C－erbB-2基因产物的表达与细胞增殖关系。方法 采用S－P免疫组化法对110例卵巢浆、粘液性良恶性肿瘤进行PCNA、p53及C－erbB-2的检测。结果 在30例卵巢囊腺瘤、38例交界性囊腺瘤及42例腺癌中,PCNA的阳性表达分别为16.67%、0和0;p53的阳性表达分别为57．89％、39．47％和15．79％;C-erbB-2的阳性表达分别为90．48％、73．80％和42．86％。三组相比差异有显著性（P＜0．05）。p53及C-erbB-2的表达在PCNA强阳性组大于PCNA的弱阳性组及阴性组,在浆液性肿瘤组大于粘液性肿瘤组。结论 卵巢交界性肿瘤在不同程度上具有与腺癌相似的癌基因表达,浆液性腺癌的预后比粘液性腺癌差,可能与癌基因表达阳性率有关。     

国产硫酸特布他林注射液治疗喘息的临床研究

OBJECTIVE: This multi-centered clinical trial was designed to assess the efficacy and safety of domestic intravenous Turbutalin Sulfate in the treatment of asthma and chronic asthmatic bronchitis. METHODS: Bricanyl was used as control. A total of 120 patients were included in this randomized controlled study. The two medications, both at a dose of 0.25 mg intravenous drip, were given three times a day for 3-5 days. RESULTS: The two drugs' clinical excellent rates were 66.7% and 73.3%; overall efficacy rates were 98.3% and 100.0%, respectively. Their pulmonary functional excellent rates were 78.4% and 76.6%; overall effect rates were 88.3% and 90.0%, respectively. Composite curative evaluation showed that the two drug's composite excellent rates were 61.6% both; their overall efficacy rates were 88.3% and 90.0%, respectively. All of these showed no significant difference (P > 0.05). The incidence rates of adverse side effects of the two groups were 13.5% and 15.0%, respectively; most of them were mild and tolerable. CONCLUSION: Domestic intravenous Terbutalin Sulfate is effective and safe in treating asthma and chronic asthmatic bronchitis.     

异丙酚对大鼠血流动力学和血浆及心肌内皮素、降钙素基因相关肽的影响

目的　探讨异丙酚对大鼠血流动力学和血浆及心肌内皮素 (ET)、降钙素基因相关肽 (CGRP)的影响。　方法　 12～ 14周 Wistar大鼠 2 4只 ,随机分为 3组 ,每组 8只 :A组 (对照组 ,注射 0 .9%生理盐水 ) ,B组 (低剂量异丙酚 )和 C组 (高剂量异丙酚 )静注异丙酚 5 m g/kg诱导麻醉后分别静脉持续 30 min注入异丙酚 30、6 0 m g·kg- 1 · h- 1 。总容量均相同 ,记录未注药时、注药后 2 ,10 ,2 0 ,30 m in的收缩压 (SBP)、平均动脉压 (MAP)、舒张压(DBP)、心率 (HR)及呼吸 ,测定血浆及心肌 ET、CGRP的含量。　结果　组内比较 :B组各时点血压、心率无差异(P<0 .0 5 ) ;C组随时间的延长 ,2 0 ,30 min的 SBP、MAP、DBP、HR均下降 (P<0 .0 5或 0 .0 1)。组间与 A组比较 :各组基础值无差异 ;B组仅在 2 ,10 m in时 HR下降 (P<0 .0 5 ) ;而 C组 SBP、MAP、DBP、HR均下降 (P<0 .0 5或0 .0 1) ,且 HR随时间的延长与 A组的差异明显增加 ,30 m in时 P<0 .0 0 1;B组和 C组血浆中 CGRP增高、ET下降 ,C组改变显著 ,心肌中 CGRP、ET无变化。　结论　异丙酚促进 CGRP释放 ,抑制 ET的释放 ,通过改变 CGRP/ET的平衡呈时间剂量依赖性降血压 ,减慢心率