中性粒细胞表面CD64联合降钙素原检测在细菌性血流感染中的应用

目的探讨联合检测血清降钙素原(PCT)和中性粒细胞CD64的水平变化在早期诊断细菌感染性疾病及对治疗效果评价的研究。方法回顾性分析2015年2月—2016年12月收治的感染性血流患者120例,根据微生物培养结果分为细菌感染组60例,病毒感染组60例,同期选取自身免疫性疾病患者60例和健康者30名,对上述研究对象分别应用全自动免疫荧光分析仪检测PCT的表达水平和流式细胞仪检测中性粒细胞表面CD64的表达水平,同时以比浊法检测C-反应蛋白及血细胞分析仪进行血白细胞(WBC)、中性粒细胞(NEUT)计数检测,并计算各指标诊断感染血流感染疾病的敏感度及特异度,探讨其诊断的价值。结果健康组PCT、CD64、CRP、WBC、NUTE水平均低于其他组(均P0.05)。细菌感染组各项指标水平均高于病毒感染组、自身免疫组(均P0.05)。病毒感染组WBC和NUTE水平高于自身免疫组(均P0.05)。血PCT和CD64指数检测细菌感染的敏感度均高于CRP、WBC及NUTE(均P0.05)。结论血清PCT与中性粒细胞CD64检测在细菌性血流感染疾病的诊断中具有较高的敏感度和特异性。     

急性加重慢性阻塞性肺疾病血清降钙素原与C-反应蛋白的测定及临床意义

目的探讨急性加重慢性阻塞性肺疾病(AECOPD)血清降钙素原(PCT)和C-反应蛋白(CRP)测定的临床价值。方法本院住院110例AECOPD患者,包括67例感染性AECOPD患者(感染组)和43例非感染性AECOPD患者(非感染组),另收集70例健康体检者为对照组,回顾性分析110例AECOPD治疗前、后及对照组血清PCT和CRP及WBC检测结果,并进行统计学分析。结果 AECOPD患者CRP、PCT和WBC治疗前均明显高于治疗后和对照组;治疗前感染组3项检测指标均明显高于非感染组,上述差异均有统计学意义(P0.05);感染组治疗前后CRP、PCT和WBC水平差异有统计学意义(P0.05);CRP和PCT诊断感染性AECOPD的灵敏度分别为89.6%和92.5%,明显高于WBC的55.2%,差异有统计学意义(P0.05)。结论血清CRP和PCT可作为COPD急性加重的评估指标,对判断是否存在感染有一定的预测价值。     

PCT、CRP、CD64在细菌性新生儿败血症中的应用

目的 观察血清降钙素原(PCT)、C反应蛋白(CRP)、分化群抗原64(CD64)水平在细菌性新生儿败血症临床诊断与疗效评估中的应用价值.方法 选取2017年6月至2020年7月宝鸡市妇幼保健院95例细菌性新生儿败血症患者(观察组)、50例局部感染新生儿(局部感染组)及50例健康新生儿(对照组),检测其血清PCT、CRP及CD64水平,并评估观察组治疗前后全身性感染相关性功能衰竭(SOFA)评分与小儿危重评分(PCIS),利用受试者工作特征(ROC)曲线分析PCT、CRP、CD64对细菌性新生儿败血症诊断效能,并分析其与SOFA评分、PCIS评分的相关性.结果 三组PCT、CRP、CD64水平比较差异有统计学意义(F值分别为1499.688、935.497、617.575,P<0.05),且观察组PCT、CRP、CD64水平高于其余两组,局部感染组PCT、CRP水平高于对照组;治疗后PCT、CRP、CD64及SOFA评分较治疗前均降低,PCIS评分较治疗前升高,差异有统计学意义(t值分别为89.124、61.643、26.828、54.887、-17.742,P<0.05);PCT、CRP、CD64与SOFA评分呈正相关(r值分别为0.884、0.836、0.795,P<0.05),与PCIS评分呈负相关(r值分别为-0.892、-0.917、-0.863,P<0.05);PCT、CRP、CD64及三者联合诊断细菌性新生儿败血症敏感度分别为75.6％、60.53％、81.3％、89.8％,特异度分别为82.4％、85.7％、87.9％、90.2％.结论 血清PCT、CRP联合CD64对细菌性新生儿败血症具有较高诊断效能,动态监测其水平变化可用于临床疗效评估.     

PCT、CRP、WBC及NLR在老年人群细菌感染性疾病中的诊断价值

目的 探讨PCT(降钙素原)、CRP(C-反应蛋白)、 WBC(白细胞总数)及NLR[中性粒细胞计数(NEUT)/淋巴细胞计数(LYMPH)比值],在老年人群细菌感染性疾病中的诊断价值。 方法 分别检测细菌性感染患者59例,非细菌性感染患者53例和42例健康人群的PCT、CRP、WBC及NLR水平,分析各组指标的差异。利用ROC曲线评价各指标在老年人群细菌性感染疾病的诊断价值。 结果 细菌感染组分别与其他2组比较,PCT、CRP、WBC及NLR水平均高于其他两组,且差异有统计学意义(P<0.05)。4项指标的ROC曲线下面积分别为0.961、0.812、0.808和0.795。其中PCT特异性最高,为92.6%,CRP的灵敏度最高,为93.2%。4个参数联合诊断ROC曲线下面积为0.973,特异性为91.6%,灵敏度为91.5%。对老年人群细菌感染组患者住院治疗前后PCT、CRP、WBC及NLR水平变化研究发现,4项指标水平随着治疗的进程逐渐下降,差异有统计学意义(P<0.05)。 结论 PCT、CRP、WBC及NLR在诊断老年人群细菌性感染疾病中均具有诊断价值。其中PCT的诊断特异性较高,与细菌性感染程度的相关性更强。4项指标联合诊断效能明显优于单项检测。     

CD64、降钙素原和C-反应蛋白在学龄前儿童早期细菌感染性疾病中的应用

目的探讨CD64、PCT和CRP的测定在学龄前儿童早期细菌感染性疾病中的诊断价值。方法选取2014年1月-2015年12月本院儿科病房感染患者,根据病原体检测结果分为细菌感染组和病毒感染组,以健康体检学龄前儿童作为正常对照组,分别检测各组研究对象CD64、PCT和CRP水平。结果细菌感染组与病毒感染组和正常对照组相比,CD64、PCT和CRP水平明显升高,差异有统计学意义(P0.05);细菌感染组经有效治疗后,三者均显著降低,差异有统计学意义(P0.05);细菌感染组CD64、PCT和CRP的阳性率分别为96.3%、91.3%和71.3%,明显高于病毒感染组和正常对照组,差异有统计学意义(P0.05);CD64和PCT诊断细菌感染的敏感度、特异度、阳性预测值、阴性预测值均明显高于CRP,差异有统计学意义(P0.05);相关性分析显示,细菌感染组CD64指数和PCT水平呈正相关(r=0.865,P0.01)。结论 CD64、PCT和CRP联合检测可及时有效的诊断学龄前儿童早期细菌感染,其中CD64和PCT的诊断效率要优于CRP。     

肺部感染急性加重期慢性阻塞性肺疾病患者血清C-反应蛋白和降钙素原及CD_(64)感染指数变化研究

目的探讨肺部感染急性加重期慢性阻塞性肺疾病(AECOPD)患者血清C-反应蛋白(CRP)、降钙素原(PCT)及CD_(64)感染指数变化,为AEPOCD患者的临床诊治提供参考。方法选取2015年10月-2016年4月医院住院治疗的AECOPD患者100例,根据是否合并肺部感染将患者分为感染组63例与非感染组37例,两组患者入院后24~48h内、感染组在抗菌药物抗菌治疗1周后抽血检测CRP、PCT、DC64感染指数。结果感染组入院时CRP、PCT及CD_(64)感染指数均高于非感染组,差异有统计学意义(P<0.05);感染组CRP、PCT及CD_(64)感染指数治疗前均高于治疗后1周,差异有统计学意义(P<0.05)。结论 AECOPD患者出现肺部感染时血清CRP、PCT、DC64感染指数会进一步升高,检测血清CRP、PCT、DC64感染指数有助于患者病情及治疗疗效判断。     

慢性阻塞性肺疾病患者急性加重期降钙素原、C-反应蛋白检测价值评价

目的探究降钙素原(PCT)、C-反应蛋白(CRP)在急性加重期慢性阻塞性肺疾病(AECOPD)中的检测价值。方法选取2014年9月-2015年12月本院收治的48例AECOPD患者作为本次研究对象并纳入AECOPD组,选取同期收治的48例稳定期COPD患者作为对照并纳入COPD组,根据有无发生细菌感染将AECOPD组再分为细菌感染组与非细菌感染组,检测并比较患者治疗前的血清CRP、PCT水平,并分析其与患者预后的关系。结果 AECOPD组的PCT、CRP水平均显著高于COPD组;AECOPD细菌感染组的PCT、CRP水平均显著高于非细菌感染组;治疗前,好转患者的PCT、CRP水平均显著低于未好转患者,差异均有统计学意义(P0.05)。Pearson相关性分析显示,AECOPD患者PCT与CRP水平呈正相关(r=0.739,P0.05)。结论 PCT、CRP水平能够作为AECOPD诊断的有效指标,其水平与患者是否合并细菌感染及预后情况均密切相关,且两者间水平呈正相关。     

PCT、CRP、WBC检测对慢性阻塞性肺疾病急性加重期感染的诊断价值

目的探讨PCT、CRP、WBC检测对慢性阻塞性肺疾病急性加重期(Acute exacerbation of chronic obstructive pulmonary disease,AECOPD)感染的诊断价值。方法选取2018年10月—2019年3月医院收治的60例感染诱发COPD急性加重期患者作为观察组,选取同期40位非感染诱发COPD急性加重患者作为对照组。比较两组的PCT、CRP、WBC的水平。结果与对照组相比,观察组PCT、CRP、WBC水平均增高。PCT、CRP、WBC诊断AECOPD感染诱发的敏感度为91. 7%(55/60)、86. 7%(52/60)、83. 4%(50/60)。PCT、CRP、WBC诊断AECOPD非由感染诱发的特异度为90%(54/60)、78. 3%(46/60)、70%(42/60); PCT诊断特异稍性高于CRP、WBC。结论 PCT诊断AECOPD感染特异性较高,可指导AECOPD感染患者合理性使用抗生素,同时也可避免抗生素的滥用。     

降钙素原对孕妇宫内感染的诊断价值研究

目的探讨降钙素原(PCT)对孕妇宫内感染的诊断价值,为孕妇宫内感染的早期诊断提供依据。方法选择2007年3月-2012年2月孕妇妊娠期宫内细菌感染82例、病毒感染84例、正常孕妇85名,分别为细菌感染组、病毒感染组与对照组,比较3组孕妇血清白细胞(WBC)计数、C-反应蛋白(CRP)、白细胞介素6(IL-6)、中性粒细胞(N)水平及PCT检测结果,数据采用SPSS13.0统计软件进行处理。结果细菌感染组孕妇WBC、CRP、IL-6、N均显著高于对照组与病毒组,病毒感染组显著高于对照组,差异有统计学意义(P<0.05);细菌感染组孕妇PCT阳性率86.6%显著高于病毒感染组的17.9%与对照组的5.9%,差异有统计学意义(P<0.05);PCT对细菌感染诊断敏感度、准确度、特异度、阳性预测值均高于其他检测项目。结论 PCT对孕妇细菌感染检测具有较高的敏感度与特异度,且速度快,准确度高,可作为孕妇宫内感染的早期诊断指标。     

血清降钙素原与C-反应蛋白对COPD急性期患者肺部细菌感染的临床诊断研究

目的探讨降钙素原(PCT)、C-反应蛋白(CRP)对慢性阻塞性肺疾病急性加重期(AECOPD)患者细菌感染的诊断价值,以期为临床诊疗提供参考。方法选取2016年1月-2016年12月医院于呼吸重症监护室或呼吸内科住院的210例AECOPD患者,依据痰培养结果将患者分为痰培养阳性组(PC组)86例及痰培养阴性组(NC组)124例,检测两组患者临床指标,依据ROC曲线计算PCT、CRP最大约登指数对应的灵敏度及特异度。结果 PC组患者PCO2(58.6±11.7)mmHg显著高于NC组(53.1±10.8)mmHg,而SaO2(87.2±5.5)%则显著低于NC组(89.4±4.6)%(P<0.05);PC组患者PCT(2.43±0.44)ng/mL、CRP浓度(108.5±18.4)mg/L均显著高于NC组(1.47±0.60)ng/mL、(95.5±12.5)mg/L(P<0.05);PCT浓度ROC曲线结果显示,PCT最大约登指数为0.701,对应敏感度为91.9%,特异度为78.2%。结论 PCT对AECOPD患者细菌感染具有一定诊断价值,而CRP对AECOPD患者细菌感染的诊断价值尚待评估。     

Risk, efficacy, and seeking of general, breast, and prostate cancer information

The authors investigated the independent and interactive effects of perceived risk and perceived efficacy on seeking of general, breast, and prostate cancer information. Analysis of the 2003 Health Information National Trend Survey indicates that perceived absolute risk and perceived response efficacy have generally independent-rather than interactive-effects on cancer information seeking. The influence of perceived absolute risk on prostate cancer information seeking appears to be moderated by perceived relative risk. When perceived relative risk is low, perceived absolute risk has no effect on prostate cancer information seeking; when perceived relative risk is high, perceived absolute risk exerts a significant positive influence on prostate cancer information seeking. The authors discuss the theoretical and practical implications.     

Bioaccumulation,metabolism, and effects of DDT,fenitrothion, and chlorpyrifos onSaccharomyces cerevisiae

Saccharomyces cerevisiae accumulated DDT, fenitrothion, and chlorpyrifos rapidly from yeast glucose medium. The maximum concentrations of DDT, fenitrothion, and chlorpyrifos accumulated were 8,253, 18,960 and 11,579 g/g (dry wt), respectively. The pattern of accumulation was similar for all insecticides. The bioconcentration factor was inversely proportional to insecticide solubilities.Saccharomyces metabolized the three insecticides, but only two metabolites of DDT (DDD and DDE) were identified. Protoplast cultures were more sensitive to DDT and fenitrothion compared to normal cultures but were less sensitive to chlorpyrifos. Both the normal and protoplast cultures recovered from the toxic effect after 24 hr.     

Risk,Efficacy, and Seeking of General,Breast, and Prostate Cancer Information

The authors investigated the independent and interactive effects of perceived risk and perceived efficacy on seeking of general, breast, and prostate cancer information. Analysis of the 2003 Health Information National Trend Survey indicates that perceived absolute risk and perceived response efficacy have generally independent—rather than interactive—effects on cancer information seeking. The influence of perceived absolute risk on prostate cancer information seeking appears to be moderated by perceived relative risk. When perceived relative risk is low, perceived absolute risk has no effect on prostate cancer information seeking; when perceived relative risk is high, perceived absolute risk exerts a significant positive influence on prostate cancer information seeking. The authors discuss the theoretical and practical implications.     

Monitoring of Nutrients, Pesticides, and Metals in Waters, Sediments, and Fish of a Wetland

Wetland areas are of extraordinary importance for the conservation of wildlife. The Aiguamolls de l’Empordà Natural Park, located in Girona (northeast Spain), is one of the few areas in Europe acting as a way station for migratory birds. The natural park is made up of a brackish water reserve and a fresh water reserve. Agriculture and tourism, which are concentrated especially around coastal population centers, are the main activities in this area and result in the release into the environment of nutrients, pesticides, and heavy metals. This article aims to investigate the presence of nutrients, selected pesticides (organochlorine compounds, permethrin and triazines) and metals (Cr, Cu, Cd, Ni and Pb) in water, sediments, and fish samples. In the case of water, seasonal variations in levels of contamination were also monitored. Comparison was made of the fresh and brackish water reserves and concentration factors for metals and pesticides in sediment were determined. We conclude that the most significant sources of contamination in the natural park are from the entry of pesticides and nutrients into surface waters and sediments as a result of the intensive farming activity of the surrounding areas. The pesticides with the greatest presence were found to be lindane, heptachlor epoxide, permethrin, and atrazine. Among the metals analyzed, Cu and Cr presented the highest concentrations in surface waters and sediments.