Effects of Electroacupuncture of Different Intensities on Energy Metabolism of Mitochondria of Brain Cells in Rats with Cerebral Ischemia-Reperfusion Injury

Objective: To observe the effects of electroacupuncture (EA) of different intensities on lactate dehydrogernase (LDH), succinate dehydrogenase (SDH) and ATPase in brain tissue of rats with cerebral ischemia-reperfusion injury (CI/R). Methods: Forty male SD rats were uniformly randomized into sham operation group (group A), CI/R group (group B), CI/R+5 mA EA (group C), CI/R+3 mA EA (group D) and CI/R+1 mA EA (group E) groups with eight rats in each group. Transient general brain ischemia was induced by four-vessel occlusion and reperfusion. The rats in group C, group D and group E were punctured and stimulated at Baihui (GV20), Mingmen (GV4) and Zusanli (ST36) with the same intermittent and rarefaction-dense wave (30 to 50 Hz) and different electric current intensities: 5 mA , 3 mA and 1 mA for 20 min after CI/R. Then the activities of Na+-K+-ATPase, SDH and LDH in mitochondria of brain tissue were measured by spectrophotometry. The ischemic cerebral cortex tissue was taken for observing the ultrastructure changes of impaired nerve cells. Results: Compared with group A, the activities of LDH, SDH and Na+-K+-ATPase were lowerer in the group B (P<0.05 or P<0.01). However, the activities of LDH, SDH and Na+-K+-ATPase were higher in the group D than those in the group B (P<0.05 or P<0.01). In group A, the anatomical structure of the cerebral cortex cells was basically normal; in group B, the neuronal cellular structures were severely damaged, the neuronal mitochondria got swelling, the mitochondrial cristae were broken, the medullated nerve fibers were not integrated. In group C, group D and group E, the ultrastructure of impaired neuron were improved. Group D was the best among three groups above. Conclusion: EA of 3 mA intensity could strengthen aerobic metabolism by elevating the activities of SDH and LDH, meanwhile maintaining the ionic equilibrium in the exterior and interior brain cell and relieving the cellular edema by reinforcing the activities of Na+-K+-ATPase.     

UPLC-Q-TOF-MS分析头孢美唑钠中有关物质

目的 建立UPLC-Q-TOF-MS分析头孢美唑钠原料中有关物质及其可能结构的方法。方法 应用超高效液相色谱-串联四极杆飞行时间质谱(UPLC-Q-TOF-MS)对头孢美唑钠原料中有关物质进行分析。采用Agilent XDB-C18 RRHD色谱柱(2.1mm×100mm, 1.8μm),以乙腈-0.1%甲酸水(13:87)为流动相进行等度洗脱,流速为0.15mL/min,检测波长254nm,柱温40℃。结果 在原料药中共检出并推断出12种有关物质的化学结构,并解析了其裂解规律。结论 该方法快速、可靠、高效,适用于头孢美唑钠原料中有关物质的检查和结构解析,可为其质量控制和工艺优化提供参考。     

老年腹部术后患者睡眠障碍的影响因素及护理对策

目的：分析老年腹部术后患者睡眠障碍的影响因素,探讨有针对性的护理干预措施以改善患者的睡眠质量。方法对2012年10月至2013年10月我院收住的62例老年腹部术后睡眠障碍患者采用匹兹堡睡眠质量表进行调查,并用自制调查表对患者进行问卷调查,分析影响因素。结果影响62例老年腹部术后患者睡眠质量的因素为：老龄化因素、手术创伤及麻醉因素、疼痛因素、环境因素、心理因素。对该类患者采取包括围术期护理、舒适护理、心理护理、药物治疗等护理措施,效果令人满意。结论明确老年腹部术后患者睡眠障碍的原因所在,采取针对性的护理对策,能改善患者睡眠质量促进早日康复。     

医院公共卫生应急决策特色智库构建模式初探

应急情报作为公共卫生应急管理决策支持的核心要素,在医院应对重大新发传染病等方面起到了事前预判准备、事中有效应对和事后分析评估的全方位信息情报支持。以智库模式打造的郑州人民医院疫情防控办公室多元协同研究小组在应对新冠肺炎应急信息监测、预警、预防、处理、评估过程中健全了情报处理标准规范,建立了特色防控知识平台,提升了协同小组人员素养,实现了跨部门跨院区智慧防控联动决策支持,值得同类医院借鉴参考。     

高同型半胱氨酸血症与心绞痛心肌缺血总负荷的关系

目的：研究高同型半胱氨酸水平与心绞痛心肌缺血总负荷的关系。方法：随机收集90例不稳定型心绞痛患者及90例稳定型心绞痛患者,观察高同型半胱氨酸血症与心肌缺血总负荷的关系。结果：不稳定型心绞痛组血同型半胱氨酸水平和心肌缺血总负荷显著高于稳定型心绞痛组（P〈0．05）。稳定型心绞痛患者高同型半胱氨酸血症者,其心肌缺血总负荷高于同型半胱氨酸正常组（P〈0．05）。不稳定型心绞痛组高同型半胱氨酸血症患者,其心肌缺血总负荷也明显高于血同型半胱氨酸正常者（P〈0．01）。结论：高同型半胱氨酸血症与心绞痛患者心肌缺血总负荷增加有关联。     

头孢曲松钠对局灶性脑缺血大鼠脑组织Fas和NF-κB表达的影响

目的探讨头孢曲松钠对局灶性脑缺血大鼠脑组织Fas和NF-κB蛋白表达的影响。方法选用健康雄性Sprague-Dawley大鼠24只,体质量(280～320)g,随机分为假手术组、单纯脑缺血组和头孢曲松钠预处理组,头孢曲松钠预处理组于术前7 d腹腔注射头孢曲松钠,200 mg·kg-1·d-1。采用线栓法制备大脑中动脉阻塞(MCAO)的局灶性脑缺血大鼠模型,缺血后24 h后处死大鼠,应用免疫组化法检测大鼠脑组织Fas和NF-κB蛋白的表达。结果与假手术组比较,单纯脑缺血组大鼠脑组织的Fas和NF-κB p65免疫组化阳性细胞数显著增多(P<0.05);与单纯脑缺血组比较,头孢曲松钠预处理组大鼠脑组织的Fas和NF-κB p65免疫组化阳性细胞数明显减少(P<0.05)。结论头孢曲松钠具有抑制局灶性脑缺血大鼠脑组织Fas和NF-κB蛋白表达的作用。     

2型糖尿病下肢动脉病变的超声诊断价值及相关因素分析

探讨彩色多普勒超声（CDFI）对2型糖尿病患者下肢动脉病变的诊断价值及发病相关因素分析。选取2012年4月-2013年4月收治的2型糖尿病患者70例作为观察组,以同期住院的非2型糖尿病患者60例作为对照组,两组均行下肢动脉CDFI检查并进行比较。观察组入院后常规测量血压、血糖、血脂。CDFI显示,观察组下肢动脉血管壁内膜中层厚度（IMT）异常、粥样硬化斑块及血管腔狭窄闭塞的检出率明显高于对照组,差异具有统计学意义（P〈0．05）;观察组下肢动脉斑块发生部位以胫前、后动脉和足背动脉多见,与对照组比较,差异有统计学意义（P〈0．01）。2型糖尿病患者下肢动脉病变发病的相关因素包括年龄、血压、糖化血红蛋白、血脂。CDFI检查是2型糖尿病患者下肢动脉病变诊断的可靠手段,可确定病变的部位、长度、阻塞的程度以及血管解剖结构的异常,具有重要的临床价值。