AFD-500电解质分析仪的使用及常见故障排除

临床上离子选择性电极测定电解质,因其操作简便、结果准确而倍受检验工作者的欢迎,但在实际工作中,因工作量较大,有的同志不严格按该仪器的操作规程进行操作,加之仪器长期的使用后,电极表面因受蛋白纤维及蛋白膜的附着等因素而影响结果的准确性,接到标本后立即上机测定,其检测结果不能真实反应它的临床价值,为使该仪器能够充分发挥其临床应用价值,笔者通过对该仪器几年来的应用,现将仪器的使用及常见故障排除总结如下:1.仪器的安装:仪器应安放在较平坦且无振动的平台上,仪器安装完毕后,应24小时通电,以保持电极湿润,同时必须具有稳压器,保证…     

经单侧椎板开窗夹闭硬脊膜动静脉瘘

目的　总结经单侧椎板开窗入路夹闭硬脊膜动静脉瘘的经验。方法　回顾性分析了 5 6例经脊髓MR和脊髓血管造影确诊的硬脊膜动静脉瘘患者经单侧椎板开窗夹闭瘘口的临床资料。结果　 5 4例患者术后行脊髓血管造影复查 ,显示瘘口全部消失。 38例患者术后 6个月行脊髓MR复查 ,显示脊髓周围的血管流空影完全消失 ,T2 像髓内高信号影消失或明显减少。 5 4例患者获随访 ,随访时间 3～ 36个月 ,2 4例症状完全消失 ,2 7例症状改善 ,3例无变化。结论　经单侧椎板开窗夹闭瘘口的手术方法是硬脊膜动静脉瘘的首选治疗方法。     

夜间电子生物阻抗测量装置对阴茎勃起功能障碍的检测

目的 :探讨夜间电子生物阻抗测量装置 (NEVA)在阴茎勃起功能障碍的诊断中的应用价值。方法 :对 4 1例主诉阴茎勃起功能障碍者 (障碍组 ) 19例主诉无勃起功能障碍但有射精障碍者 (无障碍组 )进行NEVA检测。结果 :障碍组夜间试验中的夜间勃起的次数、阴茎勃起的最大体积改变、最长持续时间等客观指标均要差于无障碍组 ,差异有统计学意义 (P <0 .0 1)。结论 :NEVA为非侵入性检测、可鉴别心理性阴茎勃起功能障碍和严重的器质性勃起功能障碍 ,且对勃起功能障碍的定性和定量具有一定的客观性。     

国产枸橼酸西地那非片治疗男性勃起功能障碍疗效和安全性的临床研究

目的评价口服国产枸橼酸西地那非片治疗男性勃起功能障碍的临床有效性和安全性。方法采用多中心、随机、双盲、安慰剂、平行对照的方法，对240例患进行为期8周的临床观察，评价标准包括：国际勃起功能指数(IIEF)、记事本、总评题。结果西地那非组皿亚评分明显高于安慰剂组(P＜0．01)，记事本、总评题结果西地那非组亦明显优于安慰剂组，无不良反应中断研究。结论国产枸橼酸西地那非片是治疗男性勃起功能障碍的有效和安全的药物。     

盐酸氨溴索合成工艺研究

目的：改进盐酸氨溴索合成工艺。方法：对关键步骤的工艺条件进行改进。结果：纯度符合药品标准，总收率达30%。结论：工艺合理，条件易于控制，是工业化生产的合理路线。     

Effects of tetrandrine on phenotypic modulation of vascular smooth muscle cells and expression of p38 MAPK as well as MKP-1 after intimal injury of rabbit carotid arteries

Objective： To study the effects of tetrandrine （Tet） on phenotypic modulation of vascular smooth muscle cells （VSMCs） and expression of p38 mitogen-activated protein kinase （p38MAPK） as well as mitogen-activated protein kinase phosphatase-1 （MKP-1） after vascular intimal injury. Methods： HE staining was used to analyze vascular morphology of sham-injured group, injured group and Tet-treated group at day 28. lmmunohistochemistry, Western blot and RT-PCR were respectively used to detect the expression change of smooth muscle a-actin （SMa-actin）, proliferation cell nuclear antigen （PCNA）, p38MAPK and MKP-1 of injured group and Tet group at days 7, 14 and 28 after balloon injury. Results： ① All layers of vascular wall in sham-injured group were intact at day 28. The neointimal area was significantly increased and the lumen area notably decreased in injured group at day 28. The neointimal proliferation in Tet treated group was less than that in injured group, and the lumen area of Tet group was significantly increased than that of injured group at day 28. ②Compared with the injured group, the expression of SMa-actin, PCNA, p38MAPK and MKP-1 of vascular wall in Tet group was no difference, and the neointimal proliferation condition was also basically as same as injured group at day 7 after injury. The expression of PCNA and p38MAKP in Tet group was obviously lower than that in injured group, and the expression of MKP-1 in Tet group was obviously higher than that in injured group at days 14 and 28 after injury. The expression of SMa-actin in Tet group was slightly higher than that in injured group at days 14 and 28 after injury. Conclusions： Tet could reduce neointimal proliferation by inhibiting VSMCs phenotypic modulation and p38MAPK signaling transduction pathway as well as its down regulation.     

Genome-wide DNA methylation profiling identifies ALDH1A3 promoter methylation as a prognostic predictor in G-CIMP− primary glioblastoma

To date, the aberrations in the DNA methylation patterns that are associated with different prognoses of G-CIMP− primary GBMs remain to be elucidated. Here, DNA methylation profiling of primary GBM tissues from 13 long-term survivors (LTS; overall survival ?18 months) and 20 short-term survivors (STS; overall survival ?9 months) was performed. Then G-CIMP+ samples were excluded. The differentially expressed CpG loci were identified between residual 18 STS and 9 LTS G-CIMP− samples. Methylation levels of 11 CpG loci (10 genes) were statistically significantly lower, and 43 CpG loci (40 genes) were statistically significantly higher in the tumor tissues of LTS than those of STS G-CIMP− samples (P < 0.01). Of the 43 CpG loci that were hypermethylated in LTS G-CIMP− samples, 3 CpG loci localized in the promoter of ALDH1A3. Furthermore, using an independent validation cohort containing 37 primary GBM samples without IDH1 mutation and MGMT promoter methylation, the hypermethylation status of ALDH1A3 promoter predicted a better prognosis with an accompanied low expression of ALDH1A3 protein. Taken together, our results defined prognosis-related methylation signatures systematically for the first time in G-CIMP− primary GBMs. ALDH1A3 promoter methylation conferred a favorable prognosis in G-CIMP− primary GBMs.     

不同手术方法治疗骨质疏松性脊柱压缩性骨折的临床效果

目的研究分析微创手术以及传统手术在骨质疏松性脊柱压缩性骨折患者的临床治疗效果。方法根据我院接收的60例骨质疏松性脊柱压缩性骨折患者来进行探讨分析,将这些患者分成观察组和对照组两组,均有30例,对照组患者接受传统开放手术治疗,观察组患者接受经皮椎体后凸成形术治疗,对两组患者的临床效果进行比较。结果观察组患者的手术时间、术后下床时间、住院时间要比对照组短一些,出血量要少一些;观察组患者的椎体高度、椎体压缩率、Cobb角改善等指标比对照组优秀;对照组并发症几率为13.33%,观察组为0;观察组活动评分比对照组高。结论和传统的手术比较起来,微创经皮椎体后凸成形术的效果更加优秀,患者受到的创伤小,术后恢复快,并发症几率低,预后效果好。     

帕金森病伴发焦虑的研究进展

焦虑是帕金森病(PD)患者常见的非运动症状之一,严重影响PD患者的生活质量,给家庭和社会带来很大的负担。但在临床工作中,PD患者的焦虑情绪并未引起足够重视,更难做到正确诊断和治疗。本文从PD患者焦虑的发生机制、临床特征、危险因素、诊断及其治疗进行综述,为PD患者焦虑的诊治提供参考。     

肠道病毒71 VP1基因的原核表达及其抗血清的制备

目的克隆并表达重组肠道病毒71(EV71)VP1基因,进行抗血清的制备并检测抗血清效价。方法利用原核表达系统将PCR获得的VP1片段构建成原核表达载体pET32a(+)-VP1,诱导其表达VP1融合蛋白并利用包涵体纯化方法进行重组蛋白的纯化,将纯化的重组蛋白免疫新西兰兔制备VP1抗血清,ELISA检测抗体效价。同时构建真核表达载体,利用其在真核细胞中的瞬时表达检测抗血清的特异性。结果通过克隆获得VP1原核表达载体,IPTG诱导VP1蛋白表达并纯化,SDS-PAGE结果显示重组蛋白表达且纯化浓度较高,将重组蛋白乳化后免疫新西兰兔3次,取血检测抗血清的效价,ELISA结果显示抗体效价为1∶64 000,利用所构建真核表达载体pcDNA3.1(+)-VP1表达VP1对抗血清进行检测,Western blot结果表明抗血清可较好的与VP1特异性结合。结论制备具有免疫原性的VP1蛋白及其效价较高的抗血清,为进一步研究抗EV71诊断方法、血清学诊断试剂盒及抗病毒疫苗的研制奠定基础。