Clinicopathological Analysis of 155 Patients with Persistent Isolated Hematuria

Objectives To reveal etiologies of persistent isolated hematuria(PIH) through ultrastructural pathological examination, to disclose clinicopathological correlation in cases with PIH, and to summarize appropriate management of patients with PIH. Methods we retrospectively studied 155 PIH patients receiving renal biopsy between January, 2003 and December, 2008 in Peking Union Medical College Hospital. All the clinical data and follow-up result were analyzed. Results All subjects included 38 children and 117 adults, with mean age of 11.38±3.25 years for children and 35.17±8.44 years for adults. Thin basement membrane nephropathy(TBMN) was the most common pathology(55.3% of children and 49.6% of adults), followed by IgA nephropathy(18.4% of children and 32.5% of adults, mainly grade 2-3) and mesangial proliferative glomerulonephritis(MsPGN) without IgA deposition(13.2% of children and 12.8% of adults). Besides, Alport syndrome(2.6% of children) and membrane nephropathy(2.6% of children and 0.9% of adults) were demonstrated as other causes of PIH. Elevated mean arteral pressure or protein excretion rate, as well as episodic macrohematuria, indicated higher risk for MsPGN rather than TBMN. On the other hand, severity of microhematuria was irrelevant to pathological types of PIH. Totally, 86 patients were followed up and 37 cases therein stayed on track for long term(mean duration 41.11±28.92 months, range 8-113 months). Most cases had benign clinical course except 3 cases with TBMN, 5 cases with IgA nephropathy, 1 case with MsPGN(without IgA deposition), and 1 case with Alport syndrome, who developed hypertension or proteinuria. All of them were administered timely intervention. Conclusions Close follow-up should be required as the primary management for PIH. Equally important is careful monitoring for early identification of undesirable predictors; while renal biopsy and other timely intervention are warranted if there is hypertension, significant proteinuria or renal impairment.

Performance Evaluation of Combined Detection of Serum CEA,CYFRA21-1,CA125,and NSE in Patients with Lung Cancer by Fluorescence Flow Cytometry

Objective:To investigate the effect of combined detection of serum carcinoembryonic antigen(CEA),cytokeratin 19 fragment(CYFRA21-1),cancer antigen 125(CA125),and neuron-specific enolase(NSE)in patients with lung cancer by fluorescence flow cytometry.Methods:From August 2019 to July 2022,200 patients with lung cancer diagnosed by pathology in our hospital were retrospectively analyzed.2 mL venous blood was collected in a fasting state and centrifuged to separate the serum(containing human chorionic gonadotropin antibody[anti-hCG antibody],hepatitis B surface antibody[anti-HBs antibody],and CEA).Results:The sensitivities of CEA and CYFRA21-1 detected via enzyme-linked immunosorbent assay(ELISA)were 100%,and the detection limits were 0.5 ng/mL and 0.1 ng/mL,respectively;the sensitivities of CA125 and NSE detected via flow cytometry were 100%,and the detection limits were 10 U/mL and 2 ng/mL,respectively.Compared with ELISA,the sensitivities of CA125 and NSE detected via flow cytometry were higher.When the concentration of CEA was 10-40 ng/mL,the sensitivities of the three markers CYFRA21-1,CA125,and NSE showed no significant changes(P>0.05);when the concentration of CEA was 40-80 ng/mL,the sensitivity of CEA significantly decreased(P<0.01),but the sensitivities of the three markers CYFRA21-1,CA125,and NSE showed no significant changes(P>0.05);when the concentration of CEA was 80-200 ng/mL,the sensitivities of all four markers showed no significant changes(P>0.05).Conclusion:Compared with the double-antibody sandwich ELISA,fluorescence flow cytometry has certain advantages,including high sensitivity,good precision,short detection time,low sample usage,and low medical cost;thus,it is worthy of clinical promotion.

A New Cytotoxic Compound from Penicillium auratiogriseum, Symbiotic or Epiphytic Fungus of Sponge Mycale plumose

A new compound, （S）-2, 4-dihydroxy-1-butyl （4-hydroxy） benzoate （1）, and a known compound, fructigenines A （2）, were isolated from fungus Penicillium auratiogriseum derived from sponge Mycale plumose, by bioassay-guided fractionation. Their structures were established by spectroscopic and chemical methods. Both compounds show.ed cytotoxic activity against tsFT210 cells.

Expression of Helper T Cell Type 17 and CD4^(+)CD25^(+)Tregs in AMA-M2 Positive PBC Patients

Objective:To investigate the expression and impact of helper T cell type 17 and CD4^(+)CD25^(+)regulatory T(Treg)cells in anti-mitochondrial M2 antibody(AMA-M2)positive primary biliary cholangitis(PBC)patients.Methods:Thirty PBC patients with positive AMA(M2 type)(antibody titer above 1:320)by indirect immunofluorescence assay under the Affiliated Hospital of Hebei University from November 2021 to August 2022 were selected as the experimental group,while 30 healthy individuals were selected as controls.The subjects were observed and analyzed for AFP-L3 and immunoglobulin expression.Results:The levels of Th17,Treg,Th17/Treg,interleukin(IL)-17A,IL-2,IL-10,and transforming growth factor(TGF)-β1 cytokines of the experimental group were 2.61±0.48,1.15±0.54,2.41±0.47,310.94±21.14,276.36±36.12,317.89±28.97,and 197.48±31.04,respectively,while those of the control group were 1.14±0.58,0.88±0.29,1.47±0.25,9.69±1.26,57.69±2.45,154.01±19.87,and 514.36±36.12,respectively,wherein P<0.05;the CD4^(+),CD8^(+),and CD4^(+)/CD8^(+)of the experimental group were 39.48±4.19,20.12±4.41,and 1.76±0.14,respectively,while those of the control group were 35.78±4.21,22.01±4.16,and 1.51±0.13,respectively,wherein P<0.05.Conclusion:In patients with PBC,there is a significant imbalance in Th17/Treg cells.Il-17A,IL-2,IL-10,and TGF-β1 cytokines play important roles in the differentiation and functional expression of both Th17 and Treg cells.

Citrate-promoted dissolution of nanostructured manganese oxides:Implications for nano-enabled sustainable agriculture

Nanostructured manganese oxides (nano-MnO_(x)) have shown great promises as versatile agrochemicals in nano-enabled sustainable agriculture,owing to the coupled benefits of controlled release of dissolved Mn2+,an essential nutrient needed by plants,and oxidative destruction of environmental organic pollutants.Here,we show that three δ-MnO_(2)nanomaterials consisting of nanosheet-assembled flower-like nanospheres not only exhibit greater kinetics in citrate-promoted dissolution,but also are less prone to passivation,compared with three α-MnO_(2)nanowire materials.The better performance of the δ-MnO_(2)nanomaterials can be attributed to their higher abundance of surface unsaturated Mn atoms–particularly Mn(Ⅲ)–that is originated from their specific exposed facets and higher abundance of surface defects sites.Our results underline the great potential of modulating nanomaterial surface atomic configuration to improve their performance in sustainable agricultural applications.

Cu(Ⅱ)和Ni(Ⅱ)对四环素在官能团化碳纳米管上吸附的影响(英文)

研究目的:探究四环素在不同官能团化碳纳米管上的吸附机制,并揭示Cu(II)和Ni(II)对四环素与碳纳米管间作用的影响机制。创新要点:1.碳纳米管对四环素的吸附与其表面官能团种类密切相关;2.金属离子对碳纳米管吸附四环素的影响能力与金属离子络合性能相关。研究方法:采用批量吸附试验和谱学手段表征相结合的研究方法。重要结论:四环素在不同官能化碳纳米管上吸附能力的强弱顺序为:石墨化碳纳米管(G-MWCNTs)>羟基化碳纳米管(OH-MWCNTs)>羧基化碳纳米管(COOH-MWCNTs)>氨基化碳纳米管(NH2-MWCNTs),碳纳米管表面的官能团类型和数量对四环素与碳纳米管间的作用机制有重要影响(表1和图2)。Cu(II)和Ni(II)对四环素在G-MWCNTs上的吸附几乎没有影响,但对在其它三种官能团化的碳纳米管上的吸附表现出不同的影响能力(图3)。与Ni(II)相比,Cu(II)与碳纳米管上官能团具有更强的络合能力,因此Cu(II)对四环素在不同碳纳米管上吸附的影响要比Ni(II)更显著。

HIF1-α和PCDGF在鼻咽癌诊断和预后评价中的临床价值研究

目的:探讨鼻咽癌患者缺氧诱导因子-1α(HIF-1α)及畸胎瘤细胞源性生长因子(PCDGF)表达情况及与临床、预后关系。方法:选择我院2014年2月-2015年2月间诊治的鼻咽癌患者62例为观察组,健康志愿者40例为对照组,比较两组HIF-1α及PCDGF表达情况。观察鼻咽癌患者HIF-1α及PCDGF表达相关性,分析HIF-1α及PCDGF表达与预后关系。结果:观察组HIF-1α阳性表达率83.9%(52/62),PCDGF阳性表达率90.3%(56/62),均显著高于对照组的5.0%(2/40)和7.5%(3/40),差异有统计学意义(x^2=60.709,68.396,P<0.05)。观察组中,T3及T4期、Ⅲ及Ⅳ期、有淋巴结转移者HIF-1α高表达、PCDGF高表达、HIF-1α和PCDGF高表达的比例明显高于T1及T2期,Ⅰ及Ⅱ期,无淋巴结转移者,差异有统计学意义(P<0.05)。Spearman相关分析显示鼻咽癌患者HIF-1α与PCDGF表达呈正相关(r=0.856,P<0.01)。随访36周,患者整体生存率为65.7%。HIF-1α和PCDGF低表达、HIF-1α高表达、PCDGF高表达、HIF-1α和PCDGF高表达鼻咽癌患者生存率分别为87.5%、56.7%、67.9%和52.2%,四组生存情况比较,差异有统计学意义(x^2=4.433,P<0.05)。结论:鼻咽癌患者HIF1-α和PCDGF具有高表达,其表达水平与患者临床、预后间关系密切。