基于HRP视角下医院固定资产全生命周期管理系统研究

为了帮助医院更好地规划固定资产,搞好固定资产全生命周期全面管理,减少资源浪费,节约医疗资本,以此促进医院可持续化发展,本文提出构建固定资产全生命周期管理系统.该系统立足于HRP(Hospital Resource Planning医院资源规划)基础上,运用预算等专门管理系统,采用集成平台接口进行对接,然后与EAS(El...     

两种酶标抗体制备方法的比较及李斯特菌TASELISA试剂盒性能的优化

研制一种低成本、快速、准确的三抗体夹心酶联免疫(Three antibodies sandwich ELISA,TAS-ELISA)检测试剂盒。采用戊二醛法、改良过碘酸钠法分别制备碱性磷酸酶(Alkaline Phosphatase,AP)、辣根过氧化物酶(Horseradish Peroxidase,HRP)标记的山羊抗兔IgG,比较单核细胞增生性李斯特菌(Listeria monocytogenes,LM)TAS-ELISA试剂盒两种酶标抗体的检测效果,并考察了试剂盒的检测灵敏度、特异性、稳定性、保存周期等指标。结果表明,采用改良过碘酸钠法制备的HRP-IgG效果好,克分子比最高可达2.9,酶结合率达27%;试剂盒检测周期6h,检测成本为3.5元/孔,特异性实验、干扰实验、重复性实验、稳定性实验表明采用该方法制备的酶标抗体,特异性好、结果稳定可靠。自制TAS-ELISA试剂盒检测性能可达到商业化试剂盒水平,为该产品的产业化提供了一定的理论依据。     

利用H_2O_2和邻氨基酚伏安法测定HRP及HRP标记物(英文)

提出了邻氨基酚（OAP）－H2O2-辣根过氧化物酶（HRP）伏安酶联免疫分析新体系并用于测定HRP及HRP标注物。HRP催化H2O2氧化OAP生成的中间产物邻苯醌亚胺在BR缓冲液中,在-0．87V（vs．SCE）处产生灵敏的极谱波。应用此极谱波测定HRP的检出限达到3．5×10-12g／mL,线性范围为6．0×10-12～4．0×10-9g／mL。对此酶催化反应产物的电极还原过程也进行了详细的探讨。     

固定化HRP/H2O2/ACAC酶促体系引发下降解淀粉接枝丙烯酰胺共聚物的合成与表征

以壳聚糖为载体、戊二醛为交联剂制备固定化辣根过氧化物酶（HRP）,采用固定化HRP/H₂O₂/乙酰丙酮（ACAC）酶促体系制备降解淀粉-丙烯酰胺接枝共聚物（St-g-PAM）,通过红外光谱、紫外光谱、核磁共振和电镜扫描等手段对接枝共聚产物进行了结构分析。结果表明,丙烯酰胺成功接枝在降解淀粉上。共聚物用做皮革复鞣剂进行了应用实验,应用结果表明复鞣后的革柔软、纤维分散好和选择填充性强。     

噬菌体单链抗体碱性磷酸酶细胞ELISA检测方法的建立

目的建立噬菌体单链抗体碱性磷酸酶(alkaline phosphatase,ALP)细胞ELISA检测方法,以期排除外周血中白细胞的干扰,将筛选到的噬菌体抗体用于临床样本的检测。方法从大容量噬菌体抗体库中筛选与食管癌细胞结合的噬菌体单链抗体,制备食管癌细胞KYSE-170和EC109鉴定板及白细胞鉴定板,采用ALP细胞ELISA法分析筛选到的噬菌体抗体与两种食管癌细胞及白细胞的结合活性,同时与辣根过氧化物酶(horse radish peroxidase,HRP)细胞ELISA法进行比较,以抗卵清蛋白(ovalbumin,OA)为阴性对照。结果经ALP细胞ELISA法检测,筛选到的噬菌体抗体1、2、3均可与KYSE-170和EC109细胞结合,A405值在检测范围内;3个噬菌体抗体与不同食管癌细胞系的结合活性差异有统计学意义(P<0.001);抗OA抗体与两种食管癌细胞的结合活性明显低于3个噬菌体抗体,且差异有统计学意义(P<0.001);3个噬菌体抗体与白细胞结合的A405值在检测范围内,与食管癌细胞系的结合活性相比,差异有统计学意义(P<0.01)。结论 ALP细胞ELISA法可鉴定噬菌体单链抗体,并可排除白细胞的干扰,有望应用于临床样本的检测。     

Gastrointestinal Tract Stabilized Protein Delivery Using Disulfide Thermostable Exoshell System

Thermostable exoshells (tES) are engineered proteinaceous nanoparticles used for the rapid encapsulation of therapeutic proteins/enzymes, whereby the nanoplatform protects the payload from proteases and other denaturants. Given the significance of oral delivery as the preferred model for drug administration, we structurally improved the stability of tES through multiple inter-subunit disulfide linkages that were initially absent in the parent molecule. The disulfide-linked tES, as compared to tES, significantly stabilized the activity of encapsulated horseradish peroxidase (HRP) at acidic pH and against the primary human digestive enzymes, pepsin, and trypsin. Furthermore, the disulfide-linked tES (DS-tES) exhibited significant intestinal permeability as evaluated using Caco2 cells. In vivo bioluminescence assay showed that encapsulated Renilla luciferase (rluc) was ~3 times more stable in mice compared to the free enzyme. DS-tES collected mice feces had ~100 times more active enzyme in comparison to the control (free enzyme) after 24 h of oral administration, demonstrating strong intestinal stability. Taken together, the in vitro and in vivo results demonstrate the potential of DS-tES for intraluminal and systemic oral drug delivery applications.     

基于小波多分辨分解的HRP算法的快速实现方法

MP类分解具有很好地再现信号内部正交稀疏结构的能力,但分解普遍存在预响应和局部特性失配等特点,为此S.Jaggi等人提出HRP算法以获得更为准确的信号内部结构,但面临更为庞大的运算量。本文结合小波多分辨快速分解算法提出了在小波域实现HRP的快速算法,并进一步给出了减少运算时间的HRP的并行算法结构。理论和仿真实验表明,小波方法与HRP的结合不但可以大大减少HRP的运算量,而且有助于改善小波分析的结果,是一种很有前途的信号自适应分解和特征提取方法。     

一种新型酶促化学发光增强液的发光性能及其在免疫分析中的应用

在辣根过氧化物酶／鲁米诺／增强剂／过氧化氢(HRP／luminol／enhancer／H2O2)增强化学发光体系中，加入一系列辅助试剂，获得了一种灵敏度高、发光持续稳定、可长期贮存的新型酶促化学发光增强液。该增强液灵敏度为2．4amol／孔，发光半衰期为40min，工作液在室温可稳定存放1个月，在37℃下可稳定存放14d。在此基础上，在TSH-BAS ECLEIA和AFP ECLEIA上进行了应用。TSH-BAS ECLEIA测量范围为0．17～35mIU／L．信噪比大于5；分析灵敏度为0．04mIU／L，功能灵敏度为0．06mIU／L；批内变异系数为2．96％～5．05％，批间变异系数为4．01％～7．56％；回收率为101％～119％；稀释实验相关方程为y=44．650x 0.352,r=0.352,r=0.996；与Bayer ACS：180系统进行方法学比较，相关方程为y=0．889x=0．351，r=0．984。AFP ECLEIA测量范围为5～2000ng／mL，信噪比大于4。动力学实验表明，加入发光液之后15min测量，结果准确可靠。     

Changes in lipolysis and volatile fraction of a goat cheese manufactured employing a hygienized rennet paste and a defined strain starter

The effect of a hygienized rennet paste (HRP) and a defined strain starter IFPL on the volatile fraction of goat cheese (Majorero) was examined. Three batches were made and those cheeses produced either industrially (IL) or in artisanal manner (AL) were compared with the experimental lot (EL), which included both HRP and IFPL starter in its manufacture. Analysis of the volatile fraction was by static headspace connected to GC–MS and this disclosed a total of 28 components belonging to the following chemical families: fatty acids, esters, ketones, aldehydes and alcohols. Most of the volatile components identified appeared in all lots but at different concentrations. IL cheeses were distinguished from the other lots, including HRP in their manufacture, essentially by a lower presence of esters and FFA (both branched-chain and aliphatic acids). The use of HRP and a defined strain starter culture (including Lb. casei IFPL 731 as adjunct) directly affected lipolysis degree. This was reflected in an increase in the mono-and diglyceride concentrations and in a greater content of short-chain FFA, particularly butanoic acid, an important flavour component, which imparts a desirable sharp, “piquant” taste to Majorero cheese. The IFPL starter culture also had a significant effect on concentrations of compounds such as 2-methyl-1-propanol, 3 methyl-1-butanol, isoamyl butyrate and acetoin.