长链非编码RNA在胰腺癌中的作用及意义

胰腺癌作为一个侵袭性强、预后不佳的恶性肿瘤之一,在我国的发病率和病死率逐渐上升.尽管手术技术和辅助药物治疗都在不断改进,但胰腺癌患者的生存期依旧没有得到明显的提高.长链非编码RNA(LncRNA)是一类转录长度大于200个核苷的RNA分子,最近的研究表明,LncRNA与胰腺癌细胞的凋亡、转移及耐药等密切相关,对胰腺癌的诊断、治疗及预后的判断具有重要意义,本文将对LncRNA在胰腺癌中的作用机制及意义进行综述.     

组织特异性胞嘧啶脱氨酶和5-氟胞嘧啶热化疗对裸鼠结肠癌肝脏转移的影响

Objective To investigate the effects of tissue specific cytosine deaminase/5-fluorocytosine (CD/5-FC) thermotherapy on hepatic metastasis of colonic carcinoma in nude mice. Methods Forty-five nude mice were randomly divided into control group, 5-FC group and 5-FC thermotherapy group according to the random number table (15 mice in each group). Mice models of hepatic metastasis of colonic carcinoma were established by portal vein injection of LoVo/CEACD cells. The hepatic metastasis rate and number of metastatic nodules of the 3 groups were compared by ehi-square test and one-way ANOVA. The pathological changes in tumor tissues and apoptotic index of tumor cells were observed. The expression of the CD gene in tumor tissues was detected by fluorescent quantitative RT-PCR and Western blot. Results The number of metastatic nodules and liver metas-tasis rate were 4.6±1.3 and 100.0% in control group, 2.2±1.0 and 60.0% in 5-FC group, 0.5±0.8 and 13.3% in 5-FC thermotherapy group, with statistical difference among the 3 groups (F=25.898, χ2=5.208, 19.548, 5.168, P<0.05). The mean apoptotic indexes of tumor cells of the 3 groups were 4.6%, 9.9% and 17.4%, respectively. Vacuolar degeneration, cell necrosis, cytolysis and apoptotic bodies were mostly observed in the 5-FC thermotherapy group. The expression of CD gene in tumor tissue was detected in all the groups. Conclusion Tissue specific CD/5-FC thermotherapy has inhibitory effects on the hepatic metastasis of LoVo cells transfected with CD gene.     

组织特异性胞嘧啶脱氨酶和5-氟胞嘧啶热化疗对裸鼠结肠癌肝脏转移的影响

目的 探讨组织特异性胞嘧啶脱氨酶/5-氟胞嘧啶(CD/5-FC)系统热化疗对裸鼠结肠癌肝脏转移的影响.方法 将45只裸鼠按随机数字表法分为3组:对照组、非热疗组、热疗组,每组15只.门静脉注射法建立结肠癌肝脏转移动物模型,3组分别给予不同的治疗方法.采用χ2检验和单因素方差分析3组肝脏肿瘤转移率、转移数目;观察各组病理学变化、肿瘤细胞凋亡指数;荧光定量RT-PCR和Westernblot检测肿瘤组织中CD基因的表达情况.结果 对照组、非热疗组、热疗组肝脏平均转移癌结节数目和转移率分别为(4.6±1.3)、(2.2±1.0)、(0.5±0.8)个和100.0%、60.0%、13.3%,3组比较差异有统计学意义(F=25.898,χ2=5.208,19.548,5.168,P<0.05);肿瘤细胞凋亡指数平均为4.6%、9.9%和17.4%.热疗组可见大量细胞空泡变性、坏死、溶解现象,有较多的凋亡小体形成.3组均可以检测到CD基因的表达.结论 组织特异性CD/5-FC系统热化疗对转CD基因结肠癌LoVo细胞裸鼠肝脏转移有明显的抑制作用.     

组织特异性胞嘧啶脱氨酶和5-氟胞嘧啶热化疗对裸鼠结肠癌肝脏转移的影响

Objective To investigate the effects of tissue specific cytosine deaminase/5-fluorocytosine (CD/5-FC) thermotherapy on hepatic metastasis of colonic carcinoma in nude mice. Methods Forty-five nude mice were randomly divided into control group, 5-FC group and 5-FC thermotherapy group according to the random number table (15 mice in each group). Mice models of hepatic metastasis of colonic carcinoma were established by portal vein injection of LoVo/CEACD cells. The hepatic metastasis rate and number of metastatic nodules of the 3 groups were compared by ehi-square test and one-way ANOVA. The pathological changes in tumor tissues and apoptotic index of tumor cells were observed. The expression of the CD gene in tumor tissues was detected by fluorescent quantitative RT-PCR and Western blot. Results The number of metastatic nodules and liver metas-tasis rate were 4.6±1.3 and 100.0% in control group, 2.2±1.0 and 60.0% in 5-FC group, 0.5±0.8 and 13.3% in 5-FC thermotherapy group, with statistical difference among the 3 groups (F=25.898, χ2=5.208, 19.548, 5.168, P<0.05). The mean apoptotic indexes of tumor cells of the 3 groups were 4.6%, 9.9% and 17.4%, respectively. Vacuolar degeneration, cell necrosis, cytolysis and apoptotic bodies were mostly observed in the 5-FC thermotherapy group. The expression of CD gene in tumor tissue was detected in all the groups. Conclusion Tissue specific CD/5-FC thermotherapy has inhibitory effects on the hepatic metastasis of LoVo cells transfected with CD gene.     

鼻内镜鼻窦手术治疗鼻窦霉菌病

随着内镜鼻窦手术的发展,结合病理学诊断.鼻窦霉菌病的报道越来越多.这里总结2000年至2006年间我院经内镜鼻窦手术治疗的鼻窦霉菌病16例.探讨霉菌性鼻窦炎的诊断及治疗.     

重症创伤患者治疗前后血清hs-CRP、IL-6和TNF-α水平的变化及临床意义

重症创伤并发全身炎症反应综合征和脓毒症,严重地危害广大劳动人民的身体健康。近期的研究表明,细胞因子炎症介质在疾病的发生和发展中起重要的作用,且与其预后密切相关。本文报告重症创伤患者治疗前后血清hs—CRP、IL-6和TNF-a水平的变化,并就临床价值作初步探讨,现将结果报告如下。     

CT在视网膜母细胞瘤钙化研究中的价值

目的通过CT检查及图像后处理软件,分析视网膜母细胞瘤(RB)内钙化程度与性别、眼别、年龄、影像学分期之间的关系。方法选择经河北省眼科医院眼眶病及眼肿瘤科手术或穿刺病理证实的120例RB患者150眼进行研究。通过影像学分期将其分为4组:眼球内期组98眼,其中肿瘤内钙化87眼;青光眼期组37眼,其中肿瘤内钙化34眼;眼球外期组11眼,其中肿瘤内钙化10眼;远处转移期组4眼,其中肿瘤内钙化3眼。眼眶横断面CT薄层扫描、软组织算法重建,采用西门子Volume软件测量钙化区域容积及眼球容积。使用SPSS 22.0统计分析软件处理实验数据,分析不同性别、眼别、年龄、影像学分期间钙化区域容积(CRV)/眼球容积(EV)比值采用秩和检验。结果眼球内期组不同性别、眼别RB患者CRV/EV比值差异无统计学意义;眼球内期组RB患者不同年龄组间CRV/EV比值差异有统计学意义;两两比较后显示1岁~组肿瘤钙化程度低于2岁~组,1岁~组肿瘤钙化程度低于3岁~组,1岁~组肿瘤钙化程度低于0岁~组;青光眼期组不同性别RB患者CRV/EV比值之间进行比较,差异有统计学意义,女性高于男性;青光眼期组不同眼别RB患者CRV/EV比值进行比较,差异有统计学意义,右眼高于左眼;青光眼期组不同年龄组间RB患者CRV/EV比值进行比较,差异无统计学意义;眼球内期组与青光眼期组RB患者CRV/EV比值期别进行比较,差异有统计学意义,RB患者青光眼期肿瘤钙化程度高于眼球内期。结论RB患者钙化程度在眼球内期、青光眼期随病情进展呈上升趋势;眼球内期RB患者1岁~组肿瘤钙化程度出现低谷区。     

MSCT后处理技术对胆系阳性结石的诊断价值

目的 探讨MSCT后处理成像对胆系阳性结石的诊断价值.方法 收集89例胆系高密度结石检查结果,采用曲面重建(CPR)+多平面重建(MPR)+容积重建(VR)后处理技术进行图像重组,以明确结石位置、大小、数量及形状,为临床提供精准的影像信息.结果 89例患者共检出396颗胆系结石,后处理技术重组图像能准确展示结石的位置、大小、数量及形状,结果与术中所见一致.结论 MSCT后处理技术能对胆系阳性结石提供精准的影像信息,提高了手术的有效性及安全性.     

锁骨骨折37例治疗体会

锁骨骨折是常见的外伤，长期以来治疗方法主要分为外固定和内固定2类。内固定对于开放骨折、合并血管神经损伤以及移位、疼痛明显的患者是较理想的治疗方法。以往较常用的方法是克氏针内固定，近年有张力带内固定及外固定等方法。2000--2006年，本院选用纯钛重建金属板和螺钉治疗锁骨骨折患者37例，疗效满意，现报道如下。     

黄芪注射液诱导人结肠癌Lovo细胞凋亡机制的研究

目的研究黄芪注射液诱导结肠癌Lovo细胞株的凋亡机制。方法以不同浓度的黄芪注射液作用于人结肠癌Lovo细胞株,用MTT法测黄芪注射液对Lovo细胞体外增殖的影响,透射电镜观察细胞超微结构;流式细胞仪AnnexinV和PI双重染色行凋亡相关检查。结果与对照组相比,实验组对Lovo细胞株增殖均有明显的抑制作用,且与浓度和作用时间呈正比;电镜下可见凋亡的早、中、晚期细胞及凋亡小体,同时可见部分细胞呈坏死改变。流式细胞仪显示:黄芪注射液作用Lovo细胞48 h后,0.05 g/mL、0.1 g/mL、0.15 g/mL、0.2g/mL各组的凋亡率分别为4.8%,18.6%,42.1%,64.8%。结论黄芪注射液能抑制Lovo细胞生长,诱导细胞凋亡。