Results 1 to 10 of about 324,409 (162)
肾移植受者外周血白细胞CMV 抗原阳性细胞数及意义 [PDF]
【目的】探讨肾移植受者外周血白细胞巨细胞病毒(CMV)PP-65 抗原阳性细胞数的变化及意义。【方法】用免疫 细胞化学法检测外周血白细胞CMV-PP65 抗原, 术后头3 个月每周1 次。【结果】273 例肾移植受者中124 例术后检出CMVPP65 抗原阳性, 初次检出CM V-PP65 抗原的平均时间为(24.1±11.3)d, 每5 万白细胞中CMV 抗原阳性细胞数均值为7.1 ±5.8 , 其中5 例CMV 抗原阳性细胞数超过10/ 5 万白细胞。无症状性和症状性CMV ...
许元文, 毛海萍, 梁艳冰
doaj +1 more source
SARS‐CoV‐2 infection as cause of in‐utero fetal death: regional multicenter cohort study
ABSTRACT Objective Placental infection with severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) can lead to placental insufficiency and in‐utero fetal death (IUFD). The objective of this study was to confirm and quantify the extent to which fetoplacental infection with SARS‐CoV‐2 is a cause of fetal death.
M. Nkobetchou +9 more
wiley +1 more source
Per‐ and polyfluoroalkyl substances (PFASs), especially long‐chain perfluorinated carboxylates and perfluorinated sulfonic acids, were considered as global environmental contaminants due to their wide industrial and commercial applications and their threat to human and animal health.
Luyao Wang +7 more
wiley +1 more source
在炎症反应发生时,白细胞粘附并穿过血管上的内皮细胞,在炎症部位发生募集。白细胞的粘附触发了内皮细胞上粘附分子P-选择素、E-选择素、细胞间粘附分子-1(ICAM-1)与微丝骨架的连接,在上述信号分子的调控下,导致微丝细胞骨架的快速、动态重组,并通过肌球蛋白轻链激酶调控白细胞的跨内皮迁移,但有关E-选择素调控微丝骨架、进而调控内皮细胞重组的现象 ...
龙勉, 黄丹丹, 章燕, 龚一心
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ABSTRACT Ti‐15Mo‐2.5Ag alloy exhibited a low modulus and strong antibacterial ability but poor bioactivity. To resolve this problem, sandblasting and anodization were used to create a hydrophilic and nano‐Ag2O‐containing TiO2 coating. Subsequently, the microstructure and physicochemical properties were investigated by scanning electron microscopy, X ...
Yanchun Xie +11 more
wiley +1 more source
ABSTRACT Biodegradable zinc (Zn)‐based materials are considered promising candidates for orthopedic applications because of their favorable mechanical properties, controllable biodegradability, and good biosafety profiles. However, their clinical translation is limited by early‐stage corrosion‐induced cytotoxicity and inflammation, as well as ...
Jinlong Mao +9 more
wiley +1 more source
ABSTRACT Bone restoration is often hindered by the spatiotemporal dysregulation of immune and regenerative signals. Conventional bio‐inert implants, providing only passive support, fail to modulate this microenvironment, leading to infections and poor healing.
Zhizhong Sun +8 more
wiley +1 more source
ABSTRACT The precise quantification of cytokines is crucial for monitoring disease onset and progression. Herein, we developed a synergistic signal amplification approach by utilizing nanoreactor‐encapsulated CeO2 nanozymes, which were in situ electrodeposited within the mesoporous silica nanochannel film (SNF) grown on indium tin oxide (ITO ...
Yu Cui +4 more
wiley +1 more source
ABSTRACT Objective To estimate the residual risk of maternal–fetal transmission after primary cytomegalovirus (CMV) infection in the periconceptional period or the first trimester in women treated with valacyclovir, and to assess whether the presence of glycoprotein B2 (gB2)‐specific immunoglobulin (Ig)‐G antibodies on immunoblot analysis refines fetal
K. O. Kagan +6 more
wiley +1 more source
多核白细胞弹性蛋白酶对人角膜基质细胞MMP-2、MMP-9表达的影响
目的观察多核白细胞弹性蛋白酶与白细胞介素-1α对人角膜基质细胞表达的MMP-2、MMP-9的影响,进而探讨角膜溃疡的发生机理。方法体外培养人角膜基质细胞,在培养液中添加或不添加多核白细胞弹性蛋白酶或白细胞介素-1α,培养5天,通过明胶酶谱分析的方法测定培养上清中的MMP-2和MMP-9的表达。结果体外培养的人角膜基质细胞无任何刺激下可释放MMP-2;白细胞介素-1α可加强并激活MMP-2的表达,同时可诱导MMP-9前体的释放;多核白细胞弹性蛋白酶在白细胞介素-1α诱导下可完全激活前体MMP ...
刘泊明, 张冰洁, 杨贲, 郝继龙
doaj

