8-甲氧沙林对黑素细胞内游离钙浓度及细胞骨架蛋白形成的影响

目的：观察8-甲氧沙林对体外培养黑素细胞内游离钙浓度、细胞骨架蛋白形成的影响。方法：正常人黑素细胞取自包皮环切术切取的包皮，用激光共聚焦扫描显微镜检测细胞内游离钙浓度，用罗丹明结合毒伞素对细胞骨架蛋白进行特异性染色。结果：8-甲氧沙林可使细胞内游离钙离子浓度升高，促进黑素细胞骨架蛋白合成。结论：8-甲氧沙林可能通过诱导黑素细胞内钙离子浓度升高和细胞骨架actin蛋白生成，从而影响黑素细胞的迁移。     

云南白药对血小板活化的研究

为探讨云南白药对血小板活化的影响 ,应用单克隆抗体法 ,并用流式细胞仪对 2 0 6例男性腹股沟斜疝患者血小板活化分子标志物进行检测 ,同时检测血浆凝血物质和 D-二聚体含量。结果显示 :服药组血小板明显活化与对照组比较有显著性差异 ( P<0 .0 5 ) ,凝血物质和 D-二聚体与对照组比较无差异 ( P>0 .0 5 )。结论 :云南白药能增加血小板活化 ,促进局部止血 ,但它不影响凝血物质和 D-二聚体的含量 ,不增加血栓形成的危险。     

体外肝素对血浆PT、APTT影响因素的研究及临床应用

目的:探讨体外不同浓度肝素及不同浓度硫酸鱼精蛋白对血浆凝血酶原时间(PT)、活化的部分凝血活酶时间(APTT)的影响,了解该实验对PT、APTT真实结果及正确分析和判断.方法:采用0.1 U/mL～2.0 U/mL肝素,1.0 μg/mL～20 μg/ mL硫酸鱼精蛋白,测定240份随机标本分成的各组血浆标本的PT、APTT及加入上述试剂后的PT、APTT时间. 结果:肝素活性在2.0 U/mL以下时对PT无明显影响,硫酸鱼精蛋白在10 μg/mL以下时对PT、APTT亦无明显影响.肝素在0.2 U/mL时对APTT影响非常明显,两者呈相关(r=0.98,P<0.05). 讨论:临床上可采用回归方程△APTT=1.22+30.41A(A为肝素活性U/mL)回归方法验证,也可以用加硫酸鱼精蛋白中和后复测APTT的方法来纠正肝素对APTT的影响,对DIC的动态监测及治疗具有重要意义.     

p19和MDM2蛋白在神经胶质瘤中的表达及相关性研究

目的 探讨p19和MDM2基因在神经胶质瘤发生、发展中的可能作用及二的相关性。方法 本实验应用敏感而特异的免疫组化S-P法。对66例神经胶质瘤中的p19和MDM2蛋白进行检测。应用卡方检验进行统计学分析。结果 p19蛋白在神经胶质瘤Ⅰ级阳性率为57.89％，Ⅱ级阳性率为26.92％。Ⅲ-Ⅳ级阳性率4.76％，各级间阳性率比较。差异有统计学意义。MDM2蛋白在神经胶质瘤Ⅰ级阳性率为5.26％。Ⅱ级阳性率为30.77％，Ⅲ-Ⅳ级阳性率66.67％，各级间阳性率比较。差异有统计学意义。p19和MDM2的阳性表达呈负相关性。结论 p19和MDM2基因可能参与了神经胶质瘤的发生发展过程。其蛋白的检测有可能作为判定其恶性程度的一个辅助指标。     

宝钢医院临床分离大肠杆菌的耐药特点分析

目的 了解宝钢医院临床分离大肠杆菌的耐药特点。方法 收集宝钢医院2002年1月至2002年12月临床分离大肠杆菌，用琼脂扩散法检测各菌株对12种常用抗生素的药敏结果。结果 2002年共检出大肠杆菌118株，其敏感率最高依次为亚胺培南(100％)，头孢他定(66％)，阿米卡星(66％)，头孢噻肟(62％)。结论 宝钢医院细菌耐药性较严重，应加强临床用药监测，合理使用抗生素。     

解热镇痛类非处方药的潜在滥用

目的：解热镇痛类非处方药滥用的预防。方法：解热镇痛类非处方药的药物作用和滥用的危害性。结果和结论：合理使用非处方药，防止非处方药的滥用。     

鞘内注射吗啡加可乐定对切口痛大鼠脊髓背角蛋白激酶A催化亚单位表达的影响

Objective To observe the effect of intrathecal clonidine plus morphine on expression of protein kinase A (PKA) catalytic subunit in the spinal dorsal horn in a rat model of incisional pain. Methods Eighty male Sprague-Dawley rats were divided randomly into five groups: sham group, control group, pre-incisional morphine 2.5 μg group, pro-incisional clonidine 5 μg group and preincisional morphine 2.5 μg plus clonidine 5 lag group (n=16). lntrathecal catheter and the model of incisional pain were pro-duced according to Yaksh and Brennan's described method respectively. Changes of pain behavior were assessed by mechanical with-drawal threshold (MWT) and thermal withdrawal latency(TWL). The expressions of PKA catalytic subunit in the spinal dorsal horn were assessed by immunohistochemical method and western blotting analysis. Results Compared with sham group, MWT and TWL in control group were decreased significantly at 2 h after incision (P<0.01) and the number of positive cells and protein expression of PKA catalytic subunit in the spinal dorsal horn were increased significantly in control group (P<0.01). Compared with control group, MWT and TWL in pre-incision morphine 2 μg plus clonidine 5 lag group were increased significantly at 2 h after incision (P<0.01) and the number of positive cells and protein expression of PKA catalytic subunit in the spinal dorsal horn were decreased significantly in pre-incision morphine 2 μg plus clonidine 5 μg group (P<0.01). However, MWT, TWL and the number of positive cells and pro-tein expression of PKA catalytic subunit in the spinal dorsal horn changed with no statistical significance in pre-incisional morphine 2.5 μg group and pre-incisional clonidine 5 μg group compared with control group. Conclusion lntrathecal clonidine significantly enhances the antinociceptive effect of intrathecal morphine in a rat model of incisional pain, which might be associated with inhibi-tion of the increased expression of PKA catalytic subunit in spinal cord.