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Alterations in plasma metabolome and correlation with urinary metabolome in cardiac surgery-associated acute kidney injury using ultra high-performance liquid chromatography-high resolution mass spectrometry 超高效液相色谱-高分辨率质谱分析心脏手术相关急性肾损伤患者血浆代谢组的变化及其与尿代谢组的相关性
IF 1.3 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-07-05 DOI: 10.1016/j.cjac.2025.100587
Yunpeng BAI , Yichun JIANG , Zhenmi LIU , Ting LIU , Silin LIANG , Feng WANG , Lang ZHANG , Xin LIU , Linhui HU , Chunbo CHEN
Cardiac surgery-associated acute kidney injury (CSA-AKI) may be related to an increase in mortality in patients in the intensive care unit; therefore, developing potential candidate molecule is particularly important for disease prediction and early diagnosis. This exploratory study investigated the alteration of the plasma metabolome profiles and possible links with the urinary metabolome in six patients with CSA-AKI at different time points, which could screen out the differential plasma metabolites for statistical analysis and altered metabolic pathways. After performing receiver operating characteristic analysis to obtain potential candidate molecules, the differential plasma metabolites with Level 1 were used for correlation analysis with the urinary metabolome. The plasma metabolome of the AKI group could be clearly separated from that of the uninjured kidney or recovered groups, but the plasma samples from recovered and uninjured groups could not be distinguished using statistical analysis. Compared with the uninjured kidney group, significant changes in the plasma metabolome were observed in such patients with CSA-AKI, especially regarding amino acid metabolism, spermidine and spermine biosynthesis, and sulfate/sulfite metabolism. The potential candidate molecules in the plasma metabolome, such as carnitines, exhibited a significantly positive correlation, while carnitines and organic acids in the plasma were involved in the correlation with the urinary metabolome. Plasma metabolic disorders were observed when CSA-AKI occurred, and the systemic status of recovered patients returned to normal after treatment. This exploratory investigation suggests potential candidate molecules in plasma and possible links to the urinary metabolome in CSA-AKI.
心脏手术相关急性肾损伤(CSA-AKI)可能与重症监护病房患者死亡率增加有关;因此,开发潜在的候选分子对疾病的预测和早期诊断尤为重要。本探索性研究探讨了6例CSA-AKI患者在不同时间点血浆代谢组谱的改变及其与尿代谢组的可能联系,从而筛选出差异血浆代谢物进行统计分析和改变的代谢途径。在进行受体工作特征分析以获得潜在的候选分子后,使用水平为1的差异血浆代谢物与尿代谢组进行相关性分析。AKI组血浆代谢组与未损伤组或恢复组血浆代谢组可以明显分离,但恢复组和未损伤组血浆样品无法通过统计分析进行区分。与未损伤肾脏组相比,CSA-AKI患者血浆代谢组发生了显著变化,特别是在氨基酸代谢、亚精胺和精胺生物合成以及硫酸盐/亚硫酸盐代谢方面。血浆代谢组中的潜在候选分子,如肉毒碱,表现出显著的正相关,而血浆中的肉毒碱和有机酸与尿代谢组相关。CSA-AKI发生时观察血浆代谢紊乱,治疗后患者全身状态恢复正常。这项探索性研究提示了CSA-AKI患者血浆中潜在的候选分子及其与尿代谢组的可能联系。
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引用次数: 0
Development of recombinant anti-human CD antibodies for diabetes and cancer monitoring using flow cytometry 用流式细胞术检测糖尿病和癌症的重组抗人乳糜泻抗体的研制
IF 1.2 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-07-03 DOI: 10.1016/j.cjac.2025.100558
Ziyi YANG , Xinxin XU , Hua KUANG , Chuanlai XU
TBNK cells, namely T, B, Natural Killer (NK) cells, are three major types of lymphocytes in the immune system. Comprehensive analysis of cluster of differentiation (CD) antigens on TBNK cell surface, such as CD3, CD4, CD8, CD16, CD19, CD56, and CD45, contributes to precise immune cell profiling and disease progression tracking. In this study, we prepared recombinant antibodies specifically target CDs markers using the ExpiCHO-Double Plasmid system, which ensured high-yield expression and reproducibility. The antibodies were efficiently conjugated with various fluorescent dyes, including FITC, PE-Cy7, APCCy7, APC, PE, and PerCP-Cy5.5, to achieve multiplexed flow cytometry analysis of TBNK cell populations. Testing of clinical samples demonstrated that the developed antibody conjugates could effectively distinguish the difference of TBNK cell populations between healthy individuals and patients, analysis of 291 adults showed type 2 diabetes had elevated CD4+/CD8+ ratios (1.9x) versus reduced ratios in cancer (0.75x), with principal component analysis (PCA) distinguishing groups (PC1 = 47.9 %) indicating their potential for disease monitoring and therapeutic evaluation. Our results underscore the utility of novel immunodiagnostic tools for early detection and personalized management of diabetes and cancer.
TBNK细胞,即T、B、NK细胞,是免疫系统中淋巴细胞的三种主要类型。全面分析TBNK细胞表面的CD3、CD4、CD8、CD16、CD19、CD56、CD45等CD3、CD8、CD16、CD56、CD45抗原,有助于精确的免疫细胞谱分析和疾病进展跟踪。在本研究中,我们利用ExpiCHO-Double质粒系统制备了特异性靶向CDs标记物的重组抗体,保证了高产表达和重复性。抗体与FITC、PE- cy7、APCCy7、APC、PE、PerCP-Cy5.5等多种荧光染料有效偶联,实现TBNK细胞群的多重流式细胞术分析。临床样本测试表明,开发的抗体偶联物可以有效区分健康个体和患者之间TBNK细胞群的差异,对291名成年人的分析显示,2型糖尿病患者CD4+/CD8+比值升高(1.9倍),而癌症患者的比值降低(0.75倍),主成分分析(PCA)区分组(PC1 = 47.9 %)表明其在疾病监测和治疗评估方面的潜力。我们的研究结果强调了新型免疫诊断工具在糖尿病和癌症的早期检测和个性化管理中的实用性。
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引用次数: 0
Extraction of uranium (VI) with neutral organic phosphorus extractants: A calorimetric and spectroscopic comparison of di(1-methylheptyl) methylphosphonate vs. tri-n-butylphosphate 中性有机磷萃取剂萃取铀(ⅵ):二(1-甲基庚基)甲基膦酸盐与磷酸三丁酯的量热和光谱比较
IF 1.3 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-27 DOI: 10.1016/j.cjac.2025.100583
Yuyu Liang , Xiang Xie , Qingye Zhou , Shufeng Zhao , Xiang Li , Chenchen Yuan , Zeng Huang , Jun Tu , Xingliang Li
Both tri-n‑butyl phosphate and di(1-methylheptyl) methylphosphonate demonstrate exceptional extraction capabilities for 233U from irradiated thorium. While extensive literature exists regarding tri-n‑butyl phosphate-based extraction systems, comparative studies on di(1-methylheptyl) methylphosphonate remain notably limited. This systematic investigation provides a parallel comparison of the chemical behaviors between these two extractants under identical experimental conditions. Results reveal that the di(1-methylheptyl) methylphosphonate system exhibits enhanced hydrophobicity relative to tri-n‑butyl phosphate, correlating with reduced water co-extraction during the uranium recovery process. Raman spectroscopic analysis demonstrated about ∼30 cm–1 shifts in the uranyl symmetric stretching vibration for di(1-methylheptyl) methylphosphonate complexes compared to ∼15 cm–1 shifts of tri-n‑butyl phosphate complexes. This significant spectral displacement indicates stronger coordination bonding between phosphoryl oxygen of di(1-methylheptyl) methylphosphonate and uranyl ions. Isothermal titration calorimetry measurements quantified the extraction thermodynamics, yielding enthalpy changes of -12.83 kJ/mol and -11.32 kJ/mol for tri-n‑butyl phosphate and di(1-methylheptyl) methylphosphonate systems, respectively. Di(1-methylheptyl) methylphosphonate exhibits marginally less exothermic enthalpy despite its superior extraction efficiency. The counterintuitive observation suggests distinct thermodynamic compensation mechanisms. This likely involves more favorable entropy contributions in the di(1-methylheptyl) methylphosphonate extraction system and greater energy consumption during desolvation. This comprehensive comparison clarifies fundamental differences in extraction mechanisms between tri-n‑butyl phosphate and di(1-methylheptyl) methylphosphonate extractants, providing critical thermodynamic parameters for optimizing 233U recovery processes.
磷酸三丁酯和二(1-甲基庚基)甲基膦酸盐都显示出从辐照钍中提取233U的特殊能力。虽然关于磷酸三正丁基萃取系统的文献大量存在,但对二(1-甲基庚基)甲基膦酸盐的比较研究仍然非常有限。这一系统的研究提供了这两种萃取剂在相同实验条件下的化学行为的平行比较。结果表明,相对于磷酸三丁酯,二(1-甲基庚基)甲基膦酸酯体系表现出更强的疏水性,这与铀回收过程中减少水共萃取有关。拉曼光谱分析表明,二(1-甲基庚基)甲基膦酸盐配合物的铀酰对称拉伸振动位移约为~ 30 cm-1,而三-正丁基磷酸配合物的位移约为~ 15 cm-1。这种明显的光谱位移表明,二(1-甲基庚基)甲基膦酸盐的磷酰氧与铀酰离子之间存在更强的配位键。等温滴定量热法量化了萃取热力学,得到磷酸三丁酯和二(1-甲基庚基)甲基膦酸盐体系的焓变分别为-12.83 kJ/mol和-11.32 kJ/mol。二(1-甲基庚基)甲基膦酸酯具有较好的萃取效率,但其放热焓略低。这一反直觉的观察结果表明了不同的热力学补偿机制。这可能涉及到二(1-甲基庚基)甲基膦酸酯萃取体系中更有利的熵贡献和溶解过程中更大的能量消耗。这项综合比较阐明了磷酸三丁酯和二(1-甲基庚基)甲基膦酸酯萃取剂在萃取机理上的根本差异,为优化233U回收工艺提供了关键的热力学参数。
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引用次数: 0
Catechol-modified wet-adhesive hydrogel for the repair of the gastric epithelium 儿茶酚修饰的湿粘水凝胶修复胃上皮
IF 1.3 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-24 DOI: 10.1016/j.cjac.2025.100581
Ning Yang , Yi Liu , Jiannan Li , Meiqi Wang , Dongxin Wang , Zhuo Liu
Gastric perforation, which may be caused by damage to the gastric epithelium, can lead to the entry of food or gastric acid in the stomach into the peritoneum, causing diseases such as peritonitis and sepsis. In severe cases, it can lead to septic shock and pose a threat to life. Developing and preparing a material that has adhesiveness in a wet environment such as the surface of the stomach is a challenge. Therefore, we have successfully prepared a hydrogel membrane with wet adhesiveness. This hydrogel membrane is composed of glutaraldehyde-crosslinked polyvinyl alcohol (PVA) hydrogel modified by 3,4-dihydroxyphenylalanine (DOPA). The side chains of PVA molecules modified with DOPA achieve wet adhesion through the formation of hydrogen bonds between the catechol groups and the surface of the tissue substrate. It is used for suture-free repair of damaged gastric epithelium. According to the results of mechanical experiments, its wet adhesion lap shear strength to gastric tissue reaches 34.8 kPa, and the peeling strength reaches 24.5 kPa. The results of in vitro cell experiments show that the hydrogel has good biocompatibility. The hydrogel prepared by this simple method demonstrates adaptability to the gastric environment, making it promising for applications in gastric wound repair.
胃穿孔可能是由于胃上皮损伤引起的,可导致胃内的食物或胃酸进入腹膜,引起腹膜炎、败血症等疾病。在严重的情况下,它可能导致感染性休克,并对生命构成威胁。开发和制备在潮湿环境(如胃表面)具有粘附性的材料是一个挑战。因此,我们成功地制备了一种具有湿粘性的水凝胶膜。该水凝胶膜由3,4-二羟基苯丙氨酸(DOPA)修饰的戊二醛交联聚乙烯醇(PVA)水凝胶组成。经DOPA修饰的PVA分子侧链通过在儿茶酚基团和组织底物表面之间形成氢键实现湿粘附。用于胃上皮损伤的无缝线修复。力学实验结果表明,其对胃组织的湿粘接剪切强度达到34.8 kPa,剥离强度达到24.5 kPa。体外细胞实验结果表明,该水凝胶具有良好的生物相容性。该方法制备的水凝胶对胃环境具有良好的适应性,在胃伤口修复中具有广阔的应用前景。
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引用次数: 0
Active compounds and target genes investigation for Tongxie-Yaofang treatment in diarrhea predominant-irritable bowel syndrome based on network pharmacology study 基于网络药理学研究的通泻要方治疗腹泻为主-肠易激综合征的活性化合物及靶基因研究
IF 1.3 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-23 DOI: 10.1016/j.cjac.2025.100579
Xiaowen Yu , Shupei Ma , Dongliang Zhang , Xuan Chen , Jun Ouyang , Biao Xi , Dongyu Xie , Yaxiang Shi

Purpose

We attempted to determine the effectiveness and dissected the detailed molecular mechanism of Tongxie-Yaofang (TXYF) in the treatment of diarrhea predominant-IBS (IBS-D) based on network pharmacology.

Materials and methods

Between February 2019 and December 2020, 28 IBS-D patients were included and given TXYF formula granules twice a day for consecutive 8 weeks. The efficacy of TXYF was evaluated based on IBS Symptom Severity Score (IBS-SSS), IBS-quality of life scale (QOL) and TCM syndrome score before and after 4 week, 8 week treatment. The active components of TXYF were screened and filtered by Traditional Chinese Medicine Systems Pharmacology and Traditional Chinese Medicine Integrated Database, followed by the target protein prediction. The IBD-related genes were retrieved by Comparative Toxicogenomics Database. The key proteins were intersected, and molecule docking were conducted. Finally, a quantitative real-time polymerase chain reaction (qRT-PCR) analysis based on samples obtained from IBS rat model was performed to validate the results in current bioinformatics analysis.

Results

TXYF treatment significantly improved IBS-SSS, IBS-QOL and TCM syndrome score after 4 and 8 week post treatment. A total of 23 active compounds, 3 herbs, and 29 key target proteins were associated with TXYF. Key target proteins, such as AKT1, PPARG, and NFKB1, were mainly enriched in pathways such as non-alcoholic fatty liver disease. The main active ingredients in TXYF for IBS-D were catechin, β-sitosterol, β-eudesmol, and Pyrethrin Ii by binding to CNR1, ESR1, TGFB1, and TNFSF11. Finally, the qRT-PCR analysis showed that hub gene TGFB2 in pharmacological network were significantly promoted in TXYF treatment group when compared with IBS blank control group, which further validated the results of our bioinformatics analysis.

Conclusions

TXYF may be effective in IBS-D treatment by targeting CNR1, ESR1, TGFB1, and TNFSF11. Our data may provide new clues for understanding the molecular mechanism of TXYF in IBS-D treatment.
目的以网络药理学为基础,探讨通泻要方治疗腹泻型肠易激综合征(IBS-D)的疗效,并详细剖析其分子机制。材料与方法2019年2月至2020年12月,纳入28例IBS-D患者,给予TXYF配方颗粒,每天2次,连续8周。采用治疗4周、8周前后IBS症状严重程度评分(IBS- sss)、IBS生活质量评分(QOL)及中医证候评分评价TXYF的疗效。通过中药系统药理学和中药综合数据库对TXYF的有效成分进行筛选和筛选,并进行靶蛋白预测。通过比较毒物基因组学数据库检索ibd相关基因。交叉关键蛋白,进行分子对接。最后,基于IBS大鼠模型样本进行定量实时聚合酶链反应(qRT-PCR)分析,以验证当前生物信息学分析的结果。结果治疗后4周和8周,stxyf可显著改善IBS-SSS、IBS-QOL和中医证候评分。共有23种活性化合物、3种中草药和29种关键靶蛋白与TXYF相关。关键靶蛋白,如AKT1、PPARG和NFKB1,主要在非酒精性脂肪性肝病等途径中富集。TXYF与CNR1、ESR1、TGFB1和TNFSF11结合,对IBS-D的主要有效成分为儿茶素、β-谷甾醇、β-苦参酚和除虫菊酯Ii。最后,qRT-PCR分析显示,与IBS空白对照组相比,TXYF治疗组药理网络枢纽基因TGFB2显著提升,进一步验证了我们的生物信息学分析结果。结论stxyf可能通过靶向CNR1、ESR1、TGFB1和TNFSF11治疗IBS-D有效。我们的数据可能为理解TXYF在IBS-D治疗中的分子机制提供新的线索。
{"title":"Active compounds and target genes investigation for Tongxie-Yaofang treatment in diarrhea predominant-irritable bowel syndrome based on network pharmacology study","authors":"Xiaowen Yu ,&nbsp;Shupei Ma ,&nbsp;Dongliang Zhang ,&nbsp;Xuan Chen ,&nbsp;Jun Ouyang ,&nbsp;Biao Xi ,&nbsp;Dongyu Xie ,&nbsp;Yaxiang Shi","doi":"10.1016/j.cjac.2025.100579","DOIUrl":"10.1016/j.cjac.2025.100579","url":null,"abstract":"<div><h3>Purpose</h3><div>We attempted to determine the effectiveness and dissected the detailed molecular mechanism of Tongxie-Yaofang (TXYF) in the treatment of diarrhea predominant-IBS (IBS-D) based on network pharmacology.</div></div><div><h3>Materials and methods</h3><div>Between February 2019 and December 2020, 28 IBS-D patients were included and given TXYF formula granules twice a day for consecutive 8 weeks. The efficacy of TXYF was evaluated based on IBS Symptom Severity Score (IBS-SSS), IBS-quality of life scale (QOL) and TCM syndrome score before and after 4 week, 8 week treatment. The active components of TXYF were screened and filtered by Traditional Chinese Medicine Systems Pharmacology and Traditional Chinese Medicine Integrated Database, followed by the target protein prediction. The IBD-related genes were retrieved by Comparative Toxicogenomics Database. The key proteins were intersected, and molecule docking were conducted. Finally, a quantitative real-time polymerase chain reaction (qRT-PCR) analysis based on samples obtained from IBS rat model was performed to validate the results in current bioinformatics analysis.</div></div><div><h3>Results</h3><div>TXYF treatment significantly improved IBS-SSS, IBS-QOL and TCM syndrome score after 4 and 8 week post treatment. A total of 23 active compounds, 3 herbs, and 29 key target proteins were associated with TXYF. Key target proteins, such as AKT1, PPARG, and NFKB1, were mainly enriched in pathways such as non-alcoholic fatty liver disease. The main active ingredients in TXYF for IBS-D were catechin, <em>β</em>-sitosterol, <em>β</em>-eudesmol, and Pyrethrin Ii by binding to CNR1, ESR1, TGFB1, and TNFSF11. Finally, the qRT-PCR analysis showed that hub gene TGFB2 in pharmacological network were significantly promoted in TXYF treatment group when compared with IBS blank control group, which further validated the results of our bioinformatics analysis.</div></div><div><h3>Conclusions</h3><div>TXYF may be effective in IBS-D treatment by targeting CNR1, ESR1, TGFB1, and TNFSF11. Our data may provide new clues for understanding the molecular mechanism of TXYF in IBS-D treatment.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"53 9","pages":"Article 100579"},"PeriodicalIF":1.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gynostemma pentaphyllum promotes strained skeletal muscle protein regeneration by adjustment of liver and spleen function via PXR-IL-6-SERCA1a 绞股蓝通过PXR-IL-6-SERCA1a调节肝脏和脾脏功能,促进张力骨骼肌蛋白再生
IF 1.3 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-21 DOI: 10.1016/j.cjac.2025.100578
Yi Zou , Xingqin Wei , Guangying Wu , Dongmei Li , Houran Cao , Weitao Chen , Lingfeng Zeng , Zhao Chen

Background

Gynostemma pentaphyllum (GYP) is a traditional Chinese medicine (TCM) used for strengthening and injure recovery, previous research has revealed that a 50% ethanol extract of GYP markedly influences strained skeletal muscle regeneration. Further research has clarified that GYP took such effect via recovery of liver and spleen, whose function and morphology also damaged when muscle is strained. However, the mechanism and biological basis of GYP’s regeneration effect still needs deeper investigation.

Objective

To elucidate the mechanism and biomarkers of GYP regulating the recovery of skeletal muscle proteins, as well as discovery of related targets involved in such process.

Methods

A rat blunt skeletal muscle strain model was established for pharmacodynamic evaluation, with administration of GYP extract or reference drug; the serum and tissue (liver, spleen) samples were collection for subsequent investigation of target expression and metabolomics; Serum metabolomics research was carried out to screen differential metabolites related to the skeletal muscle regeneration; Subsequently, the metabolomic results were combined with network pharmacology and results of target expression to clarify the signaling pathway; Then, guided by this, the differential metabolites related to the targets/pathways in organs such as the liver and spleen were determined by UPLC-MS; Eventually, biomarkers characterizing the promotion of protein regeneration in strained skeletal muscle by GYP were found.

Results

The serum metabolomic analysis successfully identified 20 differential metabolites associated with its efficacy, and further screened out metabolites like l-tryptophan, DL-glutamic acid, tyrosine, arachidonic acid as significant biomarkers that related to PXR-IL-6-SERCA1a pathway; As the regulatory mechanism of GYP indicated, those markers are recognized as key indicators of the process of strained muscle regeneration, as well as GYP’s therapeutic effect.

Conclusion

By restoring the function of those related organs via PXR-IL-6-SERCA1a pathway, internal TCM like GYP has good skeletal muscle recovery effect, which based on its regulation of some metabolites that plays important role in protein synthesis and inflammatory reaction in liver and spleen.
绞股蓝(gynostemma pentaphyllum, GYP)是一种用于强化和损伤恢复的传统中药,以往的研究表明,50%的绞股蓝乙醇提取物显著影响张力骨骼肌的再生。进一步的研究表明,GYP的作用是通过恢复肝脏和脾脏,而肝脏和脾脏在肌肉劳损时功能和形态也会受损。然而,GYP再生作用的机制和生物学基础仍需深入研究。目的阐明GYP调控骨骼肌蛋白恢复的机制和生物标志物,并发现参与该过程的相关靶点。方法建立大鼠钝性骨骼肌劳损模型,分别给予GYP提取物或参比药物进行药效学评价;收集血清和组织(肝、脾)样本,进行靶蛋白表达和代谢组学研究;开展血清代谢组学研究,筛选与骨骼肌再生相关的差异代谢物;随后,将代谢组学结果与网络药理学和靶点表达结果相结合,明确信号通路;然后,在此指导下,通过UPLC-MS测定肝脏、脾脏等器官中与靶点/通路相关的差异代谢物;最终,发现了表征GYP促进劳损骨骼肌蛋白质再生的生物标志物。结果血清代谢组学分析成功鉴定出20种与疗效相关的差异代谢物,并进一步筛选出l-色氨酸、dl -谷氨酸、酪氨酸、花生四烯酸等代谢物作为PXR-IL-6-SERCA1a通路相关的重要生物标志物;正如GYP的调控机制所表明的那样,这些标志物被认为是劳损肌肉再生过程的关键指标,也是GYP治疗效果的关键指标。结论GYP等内源性中药通过PXR-IL-6-SERCA1a通路恢复相关脏器功能,具有良好的骨骼肌恢复效果,其机制是基于其对部分代谢产物的调节,这些代谢产物在肝脏和脾脏的蛋白质合成和炎症反应中起重要作用。
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引用次数: 0
Aptamer/antibody-based and amplified lateral flow assays for detection of vascular endothelial growth factor 165 基于适体/抗体和扩增侧流法检测血管内皮生长因子165
IF 1.3 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-21 DOI: 10.1016/j.cjac.2025.100580
Chenjing Fan , Yushi Liu , Xiushuang Fan , Hua Zhang , Chao Peng , Jiangtao Ren , Erkang Wang
Early screening of serious diseases can significantly improve survival rates and quality of life, and potable and user-friendly analytical devices are conducive to point-of-care testing (POCT). In this study, a lateral flow assay (LFA) for colorimetric analysis of a significant early cancer biomarker, vascular endothelial growth factor 165 (VEGF165), was designed based on an “antibody-VEGF165-aptamer” sandwiched structure. The aptamer for VEGF165 was introduced to overcome the bottleneck, namely, high cost and limited types of antibodies of VEGF165. In addition, the sensitivity was substantially increased by cascading an in-situ gold growth-mediated signal amplification strategy (ISGGS), and as low as 0.12 ng/mL VEGF165 can be detected. Based on the universal LFA-ISGGS principle, test strips were fabricated for detecting another biomarker (cardiac troponin I, cTnI). Moreover, one test strip with dual detection channels was successfully obtained for simultaneous detection of VEGF165 and cTnI, further confirming the universality of our LFA-ISGGS platform, and indicating that the platform holds great potential for bed diagnosis of serious diseases in the future.
严重疾病的早期筛查可以显著提高生存率和生活质量,便携式和用户友好的分析设备有利于点护理检测(POCT)。在这项研究中,基于“抗体-VEGF165-适体”夹层结构,设计了一种用于重要的早期癌症生物标志物血管内皮生长因子165 (VEGF165)比色分析的横向流动试验(LFA)。为了克服VEGF165成本高、抗体种类有限的瓶颈,引入了VEGF165适配体。此外,通过级联原位金生长介导的信号放大策略(ISGGS),灵敏度大大提高,可以检测到低至0.12 ng/mL的VEGF165。根据通用LFA-ISGGS原理,制作用于检测另一生物标志物(心肌肌钙蛋白I, cTnI)的试纸条。此外,成功获得了一条双检测通道的同时检测VEGF165和cTnI的试纸条,进一步证实了我们的LFA-ISGGS平台的通用性,表明该平台在未来重大疾病的床诊中具有很大的潜力。
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引用次数: 0
Determination of eight volatile benzene series in e-cigarette liquids and aerosols by thin-film solid-phase microextraction/GC-QTOF-MS 薄膜固相微萃取/气相色谱- qtof - ms法测定电子烟液体和气溶胶中8个挥发性苯系物
IF 1.2 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-14 DOI: 10.1016/j.cjac.2025.100575
Chunqiong Wang , Wei Li , Yanbo Zeng , Xiaowei Zhang , Haowei Sun , Ke Zhang , Ganpeng Li
Monitoring harmful volatile organic compounds in e-cigarettes is crucial for product quality assessment and consumer safety. In this study, a polydimethylsiloxane (PDMS) film embedded with 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine (H3TATB)-modified MIL-101(Cr) particles was prepared via dip-coating to serve as a solid-phase microextraction (SPME) medium. Gas chromatography-quadrupole time-of-flight mass spectrometry (GC-QTOF-MS) method was developed and optimized using this custom SPME film for the determination of eight volatile benzene-series compounds in commercial e-cigarette products. The analytical method was applied to 43 electronic cigarette (e-cigarette) samples, enabling the quantification of target compounds in both e-liquids and aerosols. The method exhibited excellent linearity and high mass accuracy, with limits of quantifications (LOQs) ranging from 0.0016 to 0.0090 µg·g1 and 0.0037 to 0.0208 µg·20 puffs1 in e-liquids and aerosols, respectively. Limits of detections (LODs) ranged from 0.0054 to 0.0298 µg·g1 and 0.0122 to 0.0686 µg·20 puffs1 for e-liquids and aerosols, respectively. Recoveries of the target compounds in e-liquids ranged from 70.12% to 107.06%. Among the eight compounds, benzene, toluene, and ethylbenzene were consistently detected in both sample types. Benzene concentrations ranged from 0.837 to 5.107 µg·g1 in e-liquids and 0.201 to 4.179 µg·20 puffs1 in aerosols; ethylbenzene was present at 0 to 0.798 µg·g1 and 0 to 1.608 µg·20 puffs1, respectively. The study presents a rapid, sensitive, and reliable method for analysing volatile benzene-series compounds in complex e-cigarette matrices. The developed approach supports regulatory oversight and contributes to establishing effective quality control systems for e-cigarette products.
监测电子烟中的有害挥发性有机化合物对产品质量评估和消费者安全至关重要。本研究采用浸渍包覆法制备了2,4,6-三(4-羧基苯基)-1,3,5-三嗪(H3TATB)修饰MIL-101(Cr)颗粒的聚二甲基硅氧烷(PDMS)膜,作为固相微萃取(SPME)介质。建立了气相色谱-四极杆飞行时间质谱(GC-QTOF-MS)测定电子烟产品中8种挥发性苯系化合物的方法。该分析方法应用于43个电子烟(电子烟)样品,实现了电子液体和气溶胶中目标化合物的定量。该方法线性良好,质量精度高,定量限(loq)分别为0.0016 ~ 0.0090µg·g−1和0.0037 ~ 0.0208µg·g−1。电子液体和气溶胶的检出限(lod)分别为0.0054 ~ 0.0298µg·g−1和0.0122 ~ 0.0686µg·20 puffs−1。电子液体中目标化合物的回收率为70.12% ~ 107.06%。在8种化合物中,苯、甲苯和乙苯在两种样品中均被一致检测到。电子烟中苯的浓度范围为0.837 ~ 5.107µg·g−1,气溶胶中苯的浓度范围为0.201 ~ 4.179µg·g−1;乙苯的含量分别为0 ~ 0.798µg·g−1和0 ~ 1.608µg·20 puffs−1。本研究提出了一种快速、灵敏、可靠的分析复杂电子烟基质中挥发性苯系化合物的方法。开发的方法支持监管监督,并有助于建立有效的电子烟产品质量控制系统。
{"title":"Determination of eight volatile benzene series in e-cigarette liquids and aerosols by thin-film solid-phase microextraction/GC-QTOF-MS","authors":"Chunqiong Wang ,&nbsp;Wei Li ,&nbsp;Yanbo Zeng ,&nbsp;Xiaowei Zhang ,&nbsp;Haowei Sun ,&nbsp;Ke Zhang ,&nbsp;Ganpeng Li","doi":"10.1016/j.cjac.2025.100575","DOIUrl":"10.1016/j.cjac.2025.100575","url":null,"abstract":"<div><div>Monitoring harmful volatile organic compounds in e-cigarettes is crucial for product quality assessment and consumer safety. In this study, a polydimethylsiloxane (PDMS) film embedded with 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine (H<sub>3</sub>TATB)-modified MIL-101(Cr) particles was prepared via dip-coating to serve as a solid-phase microextraction (SPME) medium. Gas chromatography-quadrupole time-of-flight mass spectrometry (GC-QTOF-MS) method was developed and optimized using this custom SPME film for the determination of eight volatile benzene-series compounds in commercial e-cigarette products. The analytical method was applied to 43 electronic cigarette (e-cigarette) samples, enabling the quantification of target compounds in both e-liquids and aerosols. The method exhibited excellent linearity and high mass accuracy, with limits of quantifications (LOQs) ranging from 0.0016 to 0.0090 µg·g<sup>−</sup><sup>1</sup> and 0.0037 to 0.0208 µg·20 puffs<sup>−</sup><sup>1</sup> in e-liquids and aerosols, respectively. Limits of detections (LODs) ranged from 0.0054 to 0.0298 µg·g<sup>−</sup><sup>1</sup> and 0.0122 to 0.0686 µg·20 puffs<sup>−</sup><sup>1</sup> for e-liquids and aerosols, respectively. Recoveries of the target compounds in e-liquids ranged from 70.12% to 107.06%. Among the eight compounds, benzene, toluene, and ethylbenzene were consistently detected in both sample types. Benzene concentrations ranged from 0.837 to 5.107 µg·g<sup>−</sup><sup>1</sup> in e-liquids and 0.201 to 4.179 µg·20 puffs<sup>−</sup><sup>1</sup> in aerosols; ethylbenzene was present at 0 to 0.798 µg·g<sup>−</sup><sup>1</sup> and 0 to 1.608 µg·20 puffs<sup>−</sup><sup>1</sup>, respectively. The study presents a rapid, sensitive, and reliable method for analysing volatile benzene-series compounds in complex e-cigarette matrices. The developed approach supports regulatory oversight and contributes to establishing effective quality control systems for e-cigarette products.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"53 8","pages":"Article 100575"},"PeriodicalIF":1.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and characterization of Pd-doped carbon dots (CDP) for the photocatalytic degradation of imidacloprid 光催化降解吡虫啉的掺杂碳点(CDP)合成及表征
IF 1.3 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-12 DOI: 10.1016/j.cjac.2025.100576
Rani , Faiz Ali , Mian Muhammad , Zeid A. AlOthman
An effective photo catalytic method utilizing fluorescent carbon dots (CDP) has been developed for the degradation of imidacloprid. The CDP were synthesized hydrothermally using fructose, palladium, and ethylene diamine and they were characterized via Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), spectrofluorometer, ultraviolet-visible spectroscopy (UV-Vis), and energy dispersive X-ray spectroscopy (EDX) techniques. The key determinants were optimized and using the optimized conditions. 97 % photocatalytic degradation of imidacloprid was achieved in 40 min at 365 nm using 5.0 mg L1 of imidacloprid at pH 10. The catalyst loading, and the response time were effectively correlated, emphasizing the critical role in improving the degrading efficiency. The pseudo- first order and second order kinetic models were applied to the data showing the best fitting with pseudo-first order kinetic model. The CDP can be used for repeated cycles maintaining its degradation efficiency within reasonable limits. The results highlighted the promising potential of using carbon dots as effective photocatalytic materials which are cost effective and environmentally safe for water remediation.
研究了利用荧光碳点(CDP)光催化降解吡虫啉的方法。以果糖、钯和乙二胺为原料水热合成了CDP,并通过傅里叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)、荧光光谱仪、紫外可见光谱(UV-Vis)和能量色散x射线光谱(EDX)技术对其进行了表征。利用优化后的工艺条件对关键决定因素进行了优化。使用5.0 mg L-1的吡虫啉,pH值为10,在365 nm波长下,在40 min内光催化降解了97% %的吡虫啉。催化剂负载与反应时间有效相关,强调了提高降解效率的关键作用。拟一阶和二阶动力学模型与拟一阶动力学模型拟合效果最好。CDP可以重复循环使用,使其降解效率保持在合理的范围内。结果表明,碳点作为一种具有成本效益和环境安全的有效光催化材料用于水的修复具有广阔的应用前景。
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引用次数: 0
Exploring the mechanism of Epimedium in diabetes mellitus treatment based on network pharmacology and molecular dynamics simulation 基于网络药理学和分子动力学模拟探讨淫羊藿治疗糖尿病的作用机制
IF 1.2 4区 化学 Q4 CHEMISTRY, ANALYTICAL Pub Date : 2025-06-10 DOI: 10.1016/j.cjac.2025.100574
Ma Guo-Hua , Xing Xin-Xin , Gao Yuan , He Yu-Fang , Zhao Yu-Wei , Zhao Jian-Hui , Ma Yang , Yin Yu-He , Nan Min-Lun
Epimedium (EP) and its extracts have been shown to be beneficial in the treatment of diabetes mellitus (DM). However, the specific active components and mechanisms whereby they exert their effects remain unclear. This paper will explore the mechanism of action of EP for the treatment of DM using network pharmacology. Traditional Chinese medicines systems pharmacology (TCMSP), Uniprot and Swiss Target Prediction databases were used to obtain compound and target information for EP. GeneCards database was used to obtain DM-related targets, and Cytoscape 3.8.0, Metascape and We Seng Xin platforms were used for network analyses. A total of 23 active components of EP, which are associated with its therapeutic effect in the treatment of DM, were identified by integrating the results of database search. Of the 234 targets, 44 key genes were found to be significantly enriched in the AKT1, TNF, PPARG and STAT3. Icaritin and icariin were identified as the core components affecting DM pathways. Molecular docking and kinetic simulation studies confirmed that the core components effectively bind to the above targets, meanwhile, in vivo and in vitro experiments showed that the core components have better hypoglycemic activity compared with the positive control. In conclusion, the therapeutic effects of EP in DM may be attributed to its bioactive components, such as icaritin and icariin. These components also modulate DM-related pathways, including glutathione metabolism, tryptophan peroxisome-related pathways, and peroxisomes. The present study provides valuable scientific insights into the pharmacological mechanisms underlying the action of EP in DM and highlights the potential of EP as a promising drug.
淫羊藿及其提取物已被证明对糖尿病(DM)的治疗有益。然而,它们发挥作用的具体活性成分和机制尚不清楚。本文将运用网络药理学方法探讨EP治疗糖尿病的作用机制。使用中药系统药理学(TCMSP)、Uniprot和Swiss Target Prediction数据库获取EP的化合物和靶点信息。使用GeneCards数据库获取dm相关靶点,使用Cytoscape 3.8.0、metscape和We Seng Xin平台进行网络分析。通过整合数据库检索结果,共鉴定出EP的23种活性成分,这些活性成分与EP治疗DM的疗效有关。在234个靶点中,发现有44个关键基因在AKT1、TNF、PPARG和STAT3中显著富集。淫羊藿苷和淫羊藿苷被确定为影响DM通路的核心成分。分子对接和动力学模拟研究证实,核心成分与上述靶点有效结合,同时体内和体外实验表明,核心成分与阳性对照相比具有更好的降糖活性。综上所述,EP对DM的治疗作用可能与其生物活性成分如淫羊藿苷和淫羊藿苷有关。这些成分也调节dm相关途径,包括谷胱甘肽代谢、色氨酸过氧化物酶体相关途径和过氧化物酶体。本研究为EP在糖尿病中作用的药理学机制提供了有价值的科学见解,并强调了EP作为一种有前景的药物的潜力。
{"title":"Exploring the mechanism of Epimedium in diabetes mellitus treatment based on network pharmacology and molecular dynamics simulation","authors":"Ma Guo-Hua ,&nbsp;Xing Xin-Xin ,&nbsp;Gao Yuan ,&nbsp;He Yu-Fang ,&nbsp;Zhao Yu-Wei ,&nbsp;Zhao Jian-Hui ,&nbsp;Ma Yang ,&nbsp;Yin Yu-He ,&nbsp;Nan Min-Lun","doi":"10.1016/j.cjac.2025.100574","DOIUrl":"10.1016/j.cjac.2025.100574","url":null,"abstract":"<div><div><em>Epimedium</em> (EP) and its extracts have been shown to be beneficial in the treatment of diabetes mellitus (DM). However, the specific active components and mechanisms whereby they exert their effects remain unclear. This paper will explore the mechanism of action of EP for the treatment of DM using network pharmacology. Traditional Chinese medicines systems pharmacology (TCMSP), Uniprot and Swiss Target Prediction databases were used to obtain compound and target information for EP. GeneCards database was used to obtain DM-related targets, and Cytoscape 3.8.0, Metascape and We Seng Xin platforms were used for network analyses. A total of 23 active components of EP, which are associated with its therapeutic effect in the treatment of DM, were identified by integrating the results of database search. Of the 234 targets, 44 key genes were found to be significantly enriched in the AKT1, TNF, PPARG and STAT3. Icaritin and icariin were identified as the core components affecting DM pathways. Molecular docking and kinetic simulation studies confirmed that the core components effectively bind to the above targets, meanwhile, <em>in vivo</em> and <em>in vitro</em> experiments showed that the core components have better hypoglycemic activity compared with the positive control. In conclusion, the therapeutic effects of EP in DM may be attributed to its bioactive components, such as icaritin and icariin. These components also modulate DM-related pathways, including glutathione metabolism, tryptophan peroxisome-related pathways, and peroxisomes. The present study provides valuable scientific insights into the pharmacological mechanisms underlying the action of EP in DM and highlights the potential of EP as a promising drug.</div></div>","PeriodicalId":277,"journal":{"name":"Chinese Journal of Analytical Chemistry","volume":"53 9","pages":"Article 100574"},"PeriodicalIF":1.2,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Chinese Journal of Analytical Chemistry
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