PCNA和bcl-2在翼状胬肉成纤维细胞中的表达及蝮蛇抗栓酶的影响

目的研究增殖细胞核杭原(PCNA)和bcl-2在人翼状胬肉成纤维细胞(HPF)中的表达以及蝮蛇抗栓酶(AF)对二者表达的影响。方法应用免疫组织化学方法检测体外培养的第3~6代人翼状胬肉成纤维细胞的PCNA和bcl-2表达情况以及用AF处理HPF后PCNA和bcl-1的表达情况。结果未经任何处理的HPF的PCNA阳性表达率为(60·28±0·37)%;bcl-2阳性表达率为(83·33±1·56)%。用不同含量AF(0·016、0·04和0·1U/ml)处理HPF48h后,HPF的PCNA和bcl-2均有不同程度下降,以PCNA阳性表达率下降为明显,经统计学分析,均有显著统计学意义(P<0·01)。结论体外培养的HPF有较高的PCNA阳性表达及bcl-2阳性表达。AF能抑制PCNA和bcl-2在HPF上的表达。     

Spatiotemporal expression of inducible nitric oxide synthase and cyclooxygenase 2 in the spinal cord during early stage sciatic nerve crush injury

BACKGROUND: Previous studies have shown that inducible nitric oxide synthase (iNOS) and cyclooxygenase 2 (COX-2) participate in inflammatory immune responses and neuropathic pain following peripheral nerve injury. However, few reports have addressed time-dependent expression of iNOS and COX-2 following peripheral nerve injury. OBJECTIVE: To investigate spatiotemporal expression of iNOS and COX-2 during early stage sciatic nerve crush injury.DESIGN, TIME AND SETTING: The randomized, controlled, animal experiment was performed at the Laboratory of Applied Anatomy, Department of Human Anatomy and Neurobiology, Central South University, China from September 2006 to September 2007.MATERIALS: Mouse anti-rat iNOS monoclonal antibody and goat anti-rat COX-2 monoclonal antibody (Transduction Laboratory, USA), as well as biotinylated rabbit anti-mouse lgG and biotinylated rabbit anti-goat IgG (Santa Cruz Biotechnology, USA) were used in the present study.METHODS: A total of 48 healthy, adult, Sprague Dawley rats were randomly assigned to three groups. In the model group (n = 32), crush injury to the right sciatic nerve was established using an artery clamp. The model group was further assigned to four subgroups according to survival time (6,12, 24, and 72 hours), respectively (n = 8). Sham surgery (n = 8) and normal control (n = 8) groups were also established.MAIN OUTCOME MEASURES: iNOS and COX-2 expression was detected in the L4-6 spinal cord with immunohistochemistry. Gray values of iNOS- and COX-2-postive cells in the anterior horn and posterior horn of spinal cord, as well as quantification of iNOS- and COX-2-positive cells in the anterior horn of spinal cord, were measured.RESULTS: iNOS and COX-2 expression gradually increased in the anterior horn and posterior horn of the spinal cord on the damaged side over time from 6 hours following sciatic nerve injury (P＜0.05) and peaked at 72 hours. Simultaneously, the number of iNOS- and COX-2-positive cells similarly increased in the anterior horn of spinal cord on the damaged side (P＜ 0.05).CONCLUSION: iNOS and COX-2 expression increased in the spinal cord during early stage sciatic nerve crush, which suggested that iNOS and COX-2 participate in occurrence and development of inflammatory immune responses following peripheral nerve injury.     

羊种布鲁氏菌分离株体外抗生素敏感性研究

  目的   为研究布鲁氏菌临床分离株常见抗生素的敏感性。  方法  本研究利用肉汤稀释法检测布鲁氏菌临床分离株对临床常见布鲁氏菌病治疗药物的最小抑菌浓度（MIC）,并利用单因素方差分析比较不同分离省份的菌株药物敏感性差异。   结果  在现有的布鲁氏菌耐药拐点下,本研究涉及的布鲁氏菌临床分离株常见治疗药物的MIC均在敏感范围内,其中多西环素（0.06～0.12 μg/mL）、四环素（0.06～0.25 μg/mL）、庆大霉素（0.015～0.03 μg/mL）的MIC范围较低;分析分离株氨苄西林MIC值发现,四川省与陕西省（P=0.0001）、河北省（P=0.0001）和湖南省（P=0.04）均差异显著,河北省与广东省（P=0.02）差异显著。另外,本研究还发现了红霉素（32 μg/mL）、复方新诺明（0.25/4.8 μg/mL）MIC值较高的分离株。  结论  本研究涉及的布鲁氏菌临床分离株对临床常见治疗药物敏感,但部分分离株对复方新诺明等的敏感性较低,应加强监测,防止菌株耐药。 本研究为我国布鲁氏菌耐药水平监测提供基础数据,同时为抗性菌株的筛查及防控提供思路。     

Different Effects of Topical Prazosin and Pilocarpine on Uveoscleral Outflow in Rabbit Eyes

Purpose:To investigate the effects of topical prazosin and pilocarpine on uveoscleral outflow(Fu) in rabbits.Methods:Sixteen rabbits were randomly divided into the control group (5 rabbits, only topical application of normal saline in the fight eye of each rabbit), Prazosin (PZ) treated group (6 rabbits, only 0.1％ Prazosin eyedrop 0.1％ in the right eye of each one) and Pilocarpine (PC) treated group (5 rabbits, 1％ Pilocarpine eye drop in each fight eye). Intraocular pressure (IOP) of bilateral eyes of each rabbit was measured before and 1h after topical application of the eye drop. And the bilateral eyes were perfused with Fluorescein-isothiocyanate bovine serum albumin (FITC-BSA) as the tracer into the anterior chamber of each rabbit for 30 min at 90 min after topical treatment. Then the rabbits were killed for Fu measurement.Results:IOP of PZ-treated eyes decreased [(0.71±0.07)kPa] in 1 hour after PZ application. IOP of PC-treated eyes decreased [(0.70±0.08)kPa] in 1 hour after PC application. Th     

早期肢体功能康复训练对中风患者自理能力恢复的影响

目的探讨专业的早期肢体功能康复训练对中风患者自理能力恢复的影响。方法回顾性分析2010年1月～2012年6月我院神经内科收治的125例相关中风患者资料。根据患者在病情平稳后选择的锻炼方式,分为对照组(65例)和观察组(60例)。两组患者基本情况相似,病情平稳时的Fugl-Meyer量表积分Barthel指数计分均处于较差的状态,两组间没有显著性差异(p>0.05)。对照组患者选择在家属帮助下自行锻炼,观察组患者接受专业的康复治疗。比较1个月后的瘫痪肢体运动功能(Fugl-Meyer量表积分)和日常生活活动能力(Barthel指数计分)。结果 1个月后观察组患者Fugl-Meyer量表积分(包括上肢、下肢、总运动积分)及Barthel指数计分均明显高于对照组患者(p<0.05)。结论专业的早期肢体功能康复训练能加快中风患者瘫痪肢体运动功能和日常生活活动能力的恢复,提升其自理能力。     

金银花在茶饮中应用的专利分析研究

本文评述了金银花在茶饮中应用的重要性，从我国专利申请的角度统计分析了迄今为止金银花在茶饮中应用相关专利申请的历年申请量和公开量、申请人、专利申请地区分布和具体功能分布等，并对该领域发展前景给出建议。     

盐酸哌唑嗪对脱交感家兔眼葡萄膜巩膜途径的形态学研究

目的：从形态学探讨盐酸哌唑嗪（PZ）对脱交感家兔眼（FSRE）葡萄膜巩膜途径（FU）的作用。方法：家兔作单侧颈交感神经节切除术后第14日在手术侧点PZ滴眼液,通过前房内注入异硫氰酸荧光素牛血清白蛋白,PZ点眼后每2h各处死家兔2只,于荧光显微镜下观察FU各部位的荧光强度等级。结果：PZ点眼后FSRE眼压下降,但降压幅度低于正常家兔眼;点眼后FU各部位的荧光强度均稍强于对侧眼的相应部位。结论：PZ增加FU排出的作用在FSRE明显减弱,其作用部分依赖于交感神经活性,尚有未通过交感活性的其它机制。     

匹罗卡品对兔眼葡萄膜巩膜途径作用的形态学研究

目的：从形态学方面探讨匹罗卡品对兔眼葡萄膜巩膜途径的作用。方法：通过前房内注入微量示踪剂异硫氰酸荧光素牛血清白蛋白（Fluorescein isothiiocyanate-bovine serum albumin,FITC-BSA),匹罗卡品点眼后2,4,6,8,10和12h各处死家兔2只,摘除眼球作冰冻切片,于荧光显微镜下观察并确定睫状体、脉张膜上腔、前、后巩膜和脉络膜的荧光强度等级,并于光镜下观察其组织结构改变。结果：匹罗卡品点眼后眼压下降,点眼后睫状体、脉络膜上腔和前巩膜荧光强度均显著减弱,后巩膜、脉络膜无明显变化。光镜观察见睫状肌细胞间隙缩小。结论：匹罗卡品通过收缩睫状肌而减少房水从葡萄膜巩膜途径排出。     

小剂量强的松治疗慢性阻塞性肺部疾病急性加重的疗效及疗程研究

目的:了解小剂量强的松(20mg/d)治疗慢性阻塞性肺部疾病急性加重(AECOPD)是否有效,口服小剂量强的松5d和14d对AECOPD的疗效是否相同。方法:对180例AECOPD患者随机分成3组:5d治疗组、14d治疗组和安慰剂组。治疗前、后观察呼吸困难改善程度、肺功能FEV1预计值改善程度、血气分析PaO2升高程度及住院天数、治疗失败率、激素副作用、复发率等。结果:治疗组与安慰剂组比较,呼吸困难改善程度及肺功能提高明显,而5d治疗组与14d治疗组比较,差异不明显。结论:口服小剂量强的松治疗AECOPD有效,且5d疗程与14d疗程无明显差异,可明显缩短疗程,并减少激素副作用。     

血液透析护士创新行为与职业倦怠的相关性研究

目的 探讨血液透析护士创新行为与职业倦怠的相关关系,为针对性干预提供参考.方法 采用一般资料调查表、Maslach职业倦怠量表和护士创新行为量表对全国2738所医院的10570名血液透析护士进行调查.结果 血液透析护士职业倦怠的情感衰竭、去人格化、低个人成就感维度得分中位数分别为15、3、28分;创新行为总均分为3.08土0.67,产生想法、取得支持、实现想法维度得分分别为3.56±0.76、2.76±0.73、3.03±0.91.创新行为与情感衰竭和去人格化呈负相关,与低个人成就感呈正相关(均P＜0.01);多元线性回归分析显示,实现想法是职业倦怠3个维度的影响因素(均P＜0.01).结论 增强血液透析护士的创新行为能力,特别是"实现想法"可显著降低其职业倦怠水平.