Recommendations for reducing risks of infection associated with suction collection procedures.

It is recognized that risks are incurred when health care workers contact various body fluids. The handling of suction collection equipment poses a risk because it is one way workers may come in contact with these fluids. Minimizing the risks associated with suction procedures can be accomplished if appropriate policies and procedures can be developed in health care facilities.     

原发性高血压患者左室肥厚与血浆肾上腺髓质素前体N端20肽的关系

目的:探讨原发性高血压(EH)患者血浆中肾上腺髓质素前体N端20肽(PAMP)与左室肥厚的相互关系。方法:观察62例EH患者血浆PAMP的变化以及与左室重量指数之间的关系。结果:经超声心动图检查显示,62例EH患者中伴左室肥厚者42例,无左室肥厚患者20例。EH伴左室肥厚患者血浆PAMP浓度较无左室肥厚患者明显增高(65·8±12·0)∶(60·8±9·0)ng/L,P<0·05。结论:EH患者血浆PAMP的升高可能为机体的代偿反应,有助于改善患者的预后。     

应用时间分辨荧光免疫分析技术检测SARS病毒抗原的初步研究

目的 建立定量检测SARS冠状病毒N蛋白的时间分辨荧光免疫分析(TRFIA)。方法 采用经SARS-CoVN蛋白和配对实验筛选的两株抗SARSN蛋白单克隆抗体,以双抗体夹心法为基础建立检测SARS-CoVN抗原的时间分辨荧光免疫分析技术,进行方法学的评价,并与相应ELISA试剂盒进行比较。结果 该法的测量范围为(0.02~150)ng/ml,灵敏度为0.02ng/ml;批内、批间CV分别为(3.3~6.2)%和(5.3~9.6)%,与采用ELISA试剂盒检测灭活SARS-CoVN蛋白情况比较的结果一致。结论 本研究建立的检测SARSN蛋白的时间分辨荧光免疫分析技术灵敏度高,特异性好,具有潜在的临床应用价值。     

Melatonin protects N2a against ischemia/reperfusion injury through autophagy enhancement

Researches have shown that melatonin is neuroprotectant in ischemia/reperfusion-mediated injury.Although melatonin is known as an effective antioxidant,the mechanism of the protection cannot be explained merely by antioxidation.This study was devoted to explore other existing mechanisms by investigating whether melatonin protects ischemia/reperfusion-injured neurons through elevating autophagy,since autophagy has been frequently suggested to play a crucial role in neuron survival.To find it out,an ischemia/...     

重症监护病房病原菌的分布及其耐药性分析

目的: 探讨综合性重症监护病房(ICU)感染的病原菌分布及其耐药情况,为临床经验性选择抗生素提供必要的细菌学依据。方法: 收集2007年8月至2009年8月ICU患者的痰、血等标本进行细菌学培养及药敏试验。结果: 共分离菌株112株,其中G-杆菌84株(75.0%),G+球菌14株12.5%,真菌14株(12.5%)。铜绿假单胞菌、不动杆菌耐药情况严重;未发现耐亚胺培南的肠杆菌科细菌;万古霉素对G+球菌的敏感性好,未发现耐万古霉素的葡萄球菌及肠球菌。结论: ICU呼吸道感染的发生率较高,病原菌以G-杆菌为主,大部分病原菌显示多重耐药的特点。应加强对ICU病区的细菌学检测和耐药性分析,为临床合理使用抗生素提供依据,从而有效控制感染,减少新的耐药菌株出现。     

降钙素原和1，3-β-D葡聚糖联合检测诊断ICU危重患者深部真菌感染的价值

目的：探讨降钙素原(PCT)和1,3-β-D葡聚糖(G试验)联合检测诊断ICU危重患者深部真菌感染的价值。方法将我院2012年11月至2014年8月确诊为深部真菌感染的ICU危重患者106例作为真菌组,非深部真菌感染者519例为对照组,分别进行血清PCT和1,3-β-D葡聚糖含量检测,以配对t检验比较结果的差异性。结果真菌组血清中PCT和1,3-β-D葡聚糖含量分别为(0.701±0.22) pg/ml和(37.82±18.43) pg/ml,明显高于对照组的(0.238±0.12) pg/ml和(14.96±4.37) pg/ml,两者结果比较差异均有统计学意义(P<0.05);真菌组血清中PCT阳性检出率为57.5%(61/106),明显低于1,3-β-D葡聚糖阳性检出率[89.6%(95/106)],差异有统计学意义(P<0.05)。结论 ICU深部真菌感染危重患者血清中的PCT和1,3-β-D葡聚糖含量均明显高于ICU非深部真菌感染的危重患者,PCT和1,3-β-D葡聚糖联合检测对ICU危重病患者深部真菌感染诊断有重要的临床意义。     

甲型流感病毒H9N2亚型毒株血凝素基因特性的研究

目的　了解人甲型流感病毒H9N2亚型毒株的来源及从分子生物学角度来弄清不同宿主来源的H9N2亚型毒株间相互关系。方法　病毒在鸡胚中传代 ,从收获的尿囊液中提取病毒粒RNA ,通过逆转录合成cDNA。cDNA通过PCR进行扩增 ,接着PCR产物用纯化试剂盒进行纯化。而后 ,RNA序列测定是采用双脱氧链末端终止和克隆法。最后用MegAlign( 1.0 3版 )和Editseq( 3.69版 )软件进行种系发生学分析。结果　从中国所分离出的H9N2亚型毒株。它们的HA1与HA2间裂解部位的氨基酸序列均为R S S R ,除一株鸽病毒其HA蛋白分子上仅含 7个潜在的糖基化位点外 ,而其余的均含 8个。 6株H9N2毒株HA蛋白分子上氨基酸序列有 2 - 16个不同 ,这些不同分布在 2 4个不同的位点上。近来在中国同时流行着多种HA基因系的H9N2亚型毒株。结论　人甲型流感病毒H9N2亚型毒株可能性最大来自鸡的H9N2毒株 ,而不是来源于鸽的H9N2毒株。但 ,H9N2毒株是否具有人传人能力 ,至今仍不清楚。在中国同时流行着多种HA基因系的H9N2毒株。     

In situ reprogramming to transdifferentiate fibroblasts into cardiomyocytes using adenoviral vectors: Implications for clinical myocardial regeneration

Objective

The reprogramming of cardiac fibroblasts into induced cardiomyocyte-like cells improves ventricular function in myocardial infarction models. Only integrating persistent expression vectors have thus far been used to induce reprogramming, potentially limiting its clinical applicability. We therefore tested the reprogramming potential of nonintegrating, acute expression adenoviral (Ad) vectors.

新型氧气湿化输送系统的研制与临床应用

目的保证氧疗效果,解决氧气湿化过程中普遍存在的湿化液污染及湿化产生噪声问题。方法将172例需吸氧的肺癌患者随机分为观察组和对照组各86例,观察组应用自行研制的新型氧气湿化输送系统吸氧,对照组使用传统氧气湿化输送系统吸氧。结果观察组仅1例患者主观感受到湿化噪声,与对照组比较,差异有统计学意义（P〈0．01）;观察组湿化单元细菌培养阳性率显著低于对照组（P〈0．01）。结论新型氧气湿化输送系统应用于临床氧疗,能降低传统氧气湿化液污染导致的医院呼吸道感染的风险,降低噪声,可保证患者休息,且不影响氧疗效果。     

Is Endocan a Novel Diagnostic Marker for the Severity of Bronchopulmonary Dysplasia in Very Low Birth Weight Infants?

IntroductionEndocan levels were found to be associated with severity and mortality of the respiratory system diseases.ObjectiveWe aimed to figure out whether endocan was an important marker for the diagnosis, severity and follow-up of bronchopulmonary dysplasia (BPD).Materials and methodsInfants with moderate/severe BPD, and who required hydrocortisone treatment were included in the study group. Infants without BPD were allocated in the control group. Endocan levels were compared between the control group and the study group, and before and after the treatment in the study group.ResultsA total of 148 infants, 74 infants in the control group and 74 infants in the BPD group, were included. The endocan level was higher in the BPD group than in the control group (P = .001). Endocan levels before treatment in the BPD group was found to be higher than endocan level after treatment (P = .021).ConclusionOur study found that endocan levels increased in moderate/severe BPD. Serum endocan levels may be a safe and novel indicator for the follow-up of response to treatment and the prognosis of the severity of the disease.