自制分根器在分根法拔牙中的应用

目的:总结自行设计制作一分根器的临床应用效果。方法:选取200例需要拔除的复杂多根牙随机分为2组,研究组采用自制刃部四凹槽结构的分根器分根后拔除患牙,对照组采用传统的劈凿法拔除患牙。记录手术时间、患者的损伤情况和术后病人反应。结果:观察组手术时间和术后并发症均明显少于对照组(P<0.05),自制分根器在分根、挺根的使用效果良好。结论:自制分根器用于分根拔牙中具有安全、组织损伤小、病人痛苦小等优点。     

Apoptosis of human tongue squamous cell carcinoma cell (CAL-27) induced by Lactobacillus sp. A-2 metabolites

Objective

To study the effect of Lactobacillus sp. A-2 metabolites on viability of CAL-27 cells and apoptosis in CAL-27 cells.

Methods

Lactobacillus sp. A-2 metabolites 1 and 2 (LM1 and LM2) were obtained by culturing Lactobacillus sp. A-2 in reconstituted whey medium and whey-inulin medium; the cultured CAL-27 cells were treated with different concentrations of LM1 and LM2 (0, 3, 6, 12, 24, 48 mg/mL) and assayed by methyl thiazolyltetrazolium (MTT) method; morphological changes of apoptotic cell were observed under fluorescence microscopy by acridine orange (Ao) fluorescent staining; flow cytometry method (FCM) and agarose gel electrophoresis were used to detect the apoptosis of CAL-27 cells treated LM1 and LM2.

Results

The different concentrations of LM1 and LM2 could restrain the growth of CAL-27 cells, and in a dose-dependent manner; the apoptosis of CAL-27 cells was obviously induced and was time-dependent.

Conclusions

Viability of CAL-27 cells was inhibited by Lactobacillus sp. A-2 metabolites; Lactobacillus sp. A-2 metabolites could induce CAL-27 cells apoptosis; study on the bioactive compounds in the Lactobacillus sp. A-2 metabolites and their molecular mechanism is in progress.     

单卵裂期胚胎移植在体外受精-胚胎移植中的临床结局

目的探讨体外受精第3天(D3)单卵裂期胚胎移植在体外受精-胚胎移植中的临床应用前景。方法回顾性分析我院体外受精D3单卵裂期胚胎移植临床结局,收集172个新鲜胚胎移植周期,观察原发不育组和继发不育组、D3移植胚胎细胞数及评级、主动性单卵裂期胚胎移植及被动性单卵裂期胚胎移植与临床妊娠的关系。结果继发不育组女方年龄高于原发不育组,临床妊娠率(胚胎种植率)分别为33.63%、23.73%。D3移植胚胎的细胞数在8细胞以上者妊娠率与细胞数不足7细胞者相比有统计学差异(P0.01)。主动性单卵裂期胚胎移植组虽然年龄和不育年限高于被动性单卵裂期胚胎移植组,但移植胚胎质量及妊娠率明显高于后者(P0.01)。被动性单卵裂期胚胎移植组中各年龄段患者的移植胚胎质量没有显著性差异,但年龄低于35岁者有较好的妊娠结局。结论体外受精D3单卵裂期胚胎移植能获得良好的妊娠结果,临床妊娠结局主要与移植胚胎所含细胞数及评分密切相关。其次,年龄不足35岁,不育年限短的不育患者有更好的妊娠结局。     

TIA发作间期SPECT脑血流灌注显像检查的意义探讨

本资料通过单光于发射计算机断层扫描（SPECT）检查观察近期发作的短暂性脑缺血发作（TIA）患者发作间期的脑血流灌注状况，并与CT检查进行比较，旨在进一步探讨SPECT检查对TIA病程和转归、预后预测的临床意义。     

Determination of free L-carnitine in human seminal plasma by high performance liquid chromatography with pre-column ultraviolet derivatization and its clinical application in male infertility

BACKGROUND: To develop and validate a simple and reliable high performance liquid chromatographic (HPLC) method for the analysis of free L-carnitine in human seminal plasma and to investigate its clinical significance as a potentially additional means of evaluating the infertile male. METHODS: After proteins in seminal plasma are precipitated with a mixture of acetonitrile and methanol (9:1; v/v), free L-carnitine in seminal plasma was derivatized to form its UV-absorbing ester. HPLC separation of the sample solution was performed on a Lichrospher SiO2 column and detected by ultraviolet absorbance at 260 nm. A mobile phase composed of acetonitrile-citric acid buffer (containing 12 mmol/L triethanolamine, pH 5.0) was found to be the most suitable for this separation at a flow rate of 1.2 mL/min and enabled the baseline separation of the free L-carnitine from interferences with isocratic elution. The free L-carnitine levels in seminal plasma were studied in both 30 control subjects and 87 patients with infertility. Ejaculates were classified into studied subgroups and defined as: asthenozoospermia (n=29), oligozoospermia (n=19) and oligoasthenoteratozoospermia (n=39). RESULTS: Under the chromatographic conditions described, the free L-carnitine derivative had a retention time of approximately 13 min. Good separation and detectability of free L-carnitine in human seminal plasma sample were obtained. The method proved to be linear in the range of L-carnitine from 0 micromol/L to 1000 micromol/L. The relative standard deviations of within- and between-assay for free L-carnitine analysis were 1.23 and 1.36 %, respectively. The recoveries were 91.6-96.5% for the human seminal plasma samples. Free L-carnitine concentrations in the populations were 392.66+/-107.18 micromol/L in the fertile group (n=30), 270.00+/-83.92 micromol/L in asthenozoospermia group, 187.97+/-43.90 micromol/L in oligozoospermia group and 175.65+/-67.07 micromol/L in oligoasthenozoospermia group. The large difference (P<0.01) between the fertile and infertile populations is evident and the difference between the subdivided groups in the infertile group is not significant (P>0.05). CONCLUSION: The determination of free L-carnitine level in seminal plasma may prove useful as a potentially biochemical marker of fertility and this is a useful guidance for the clinic therapy and the mechanismic study on the male reproduction.     

前馈控制与护理安全盲点关系的研究

目的:应用前馈控制管理理论、方法,以减少或避免护理安全隐患的发生,以保证病人的安全。方法:以分析我院近3年护理缺陷原因为基础,对我市426名三级甲等医院在职护理人员进行护理安全影响因素认知程度的问卷调查,并采用SPSS10.0软件进行资料处理。结果:护理管理的主观因素对护理安全的影响认知程度最高。病房环境因素对护理安全的影响未被临床护理人员重视。年龄及工作年限与护理人员对影响护理安全的某些因素的认同程度呈负相关。结论:护理管理者要重视护理工作中的安全管理,确保护理安全。(P<0.01)     

腹膜透析对氧化乐果中毒兔肝脏及血清胆碱酯酶的影响

目的 探讨腹膜透析(PD)对急性有机磷农药中毒(AOPP)致肝损伤的保护作用及对血清胆碱酯酶的影响.方法 建立兔的氧化乐果中毒模型,动态观察对照组、PD组肝脏功能、白蛋白、血清胆碱酯酶水平及光镜下肝脏病理改变.结果 染毒后两组动物血清胆碱酯酶明显降低,肝脏功能改变明显,但PD组血清且日碱酯酶恢复较快,肝功能指标改变明显轻于对照组,PD组白蛋白水平低于对照组;光镜下两组均有肝细胞受损并出现中毒性肝炎征象,PD组肝细胞损害明显轻于对照组.结论 PD对AOPP致肝脏损害具有积极的保护作用,并有利于血清胆碱酯酶的恢复.     

住院儿童精神分裂症患者家属健康教育需求调查

目的：探讨住院儿童精神分裂症患者家属对健康教育知识的需求，为临床护理工作实施健康教育提供依据，指导患儿的全面康复。方法：采用问卷调查法调查了30例住院患儿的一级亲属。调查问卷分A、B两部分，A部分为患儿和家属的一般资料，B部分为家属健康教育知识需求评估表共5个主题。结果：问卷的5个主题中，家属认为疾病相关知识的需求最重要。结论：对儿童精神分裂症患者家属健康教育内容的选择及优先次序方面有一定的指导作用，有利于制定有个性化、针对性强的健康教育计划，提高患儿及家属对治疗和服药的依从性，有利于患儿的康复。     

急性心肌梗死患者再灌注前后血栓调节蛋白水平的变化及意义

目的 测定急性心肌梗死(AMI)患者再灌注治疗前后血栓调节蛋白(TM)水平变化并探讨其临床意义.方法 60例我院急诊AMI患者确诊AMI后即刻和再灌注治疗后第3天采集标本,12例对照者空腹采集标本,应用固相夹心法酶联免疫吸附试验(ELISA)方法测定血浆TM水平.结果 AMI组再灌注治疗前后血浆TM水平均高于对照组(P<0.05);就诊时ST段抬高心肌梗死(STEMI)组血浆TM水平与非ST段抬高心肌梗死(NSTEMI)组比较差异有统计学意义(P<0.05);再灌注治疗后第3天急诊溶栓 补救PCI组血浆TM水平升高最显著(P<0.05);AMI再灌注治疗后有并发症组就诊时血浆TM水平与无并发症组比较差异有统计学意义(P<0.05),再灌注治疗后第3天两组TM水平比较差异有统计学意义(P<0.01).结论 血浆TM水平变化与急性冠脉血管闭塞性损害有关,可以作为评价再灌注对微血管损伤程度的辅助指标.     

美托咪啶用于全身麻醉的随机对照试验的Meta分析

目的评价美托咪啶用于全身麻醉患者的临床效果和安全性。方法电子检索PubMed、EBSCO、Springer、Ovid、外文生物医学期刊全文数据库和CBMdisc、CNKI，文献检索起止时间均从建库至2008年4月，同时检索纳入文献的参考文献，纳人探讨美托咪啶用于全身麻醉患者的临床效果与安全性的随机对照试验，并逐个进行质量评价和资料提取。统计学分析采用RevMan4．2．10软件。结果共纳入25个随机对照试验（共1241例）。Meta分析结果显示：与生理盐水相比，美托咪啶能降低围手术期患者的心率和血压，减少术后恶心呕吐[RR=0．57，95％CI（0．38，0．84）]、躁动[RR=0．29，95％CI（0．17，0．51）]、寒战[RR=0．45，95％CI（0．29，0．68）]，但增加患者心动过缓[RR：2．16,95％CI（1．58，2．95）]和低血压[RR=2．97，95％CI（1．42，6．18）]的发生率。加用美托咪啶能减少硫喷妥钠、异氟醚、芬太尼的用量，而在减少肌松药的用量方面与生理盐水相比，两者差异无统计学意义。美托咪啶在早期苏醒指标上与生理盐水组无差异，由于术后并发症较少，美托咪啶组患者能更快地出苏醒室[WMD=15．17，95％CI（3．87，26．46）]。结论现有有限资料表明，在维持围手术期血流动力学平衡上，美托咪啶优于生理盐水。此外，美托咪啶还能减少术后恶心呕吐、躁动、寒战的发生；减少静脉和吸入麻醉药的用量，但不减少肌松药的用量；在苏醒时间上，美托咪啶与生理盐水组无差异，在出苏醒室时间上，美托咪啶更有优势。