JOURNAL OF CHROMATOGRAPHY A
·
2021
·
IF 4.759
Jingjing Han,Huiqi Wang,Zhanfeng Li,Zonghua Wang
Chitosan-modified magnetic Schiff base network composite nanospheres (Fe 3 O 4 @SNW@Chitosan) were prepared for the enrichment and detection of hippuric acid (HA) and 4-methyl hippuric acid (4-MHA) via magnetic solid phase extraction (MSPE) connected with HPLC. The SNW was one of the covalent organic framework, which constructed through covalent bonds, shown comprising solvent stability, low density and accessible pores. The obtained Fe 3 O 4 @SNW@Chitosan has many merits as a magnetic sorbent, including a hydrophilic surface, uniform pore size, unique ordered channel structure, and superparamagnetism. The favourable linearity of this MSPE-HPLC method was in the range of 1-1000 μg L −1 , and LODs of HA and 4-MHA were 0.3 μg L −1 and 0.2 μg L −1 , respectively. The recoveries in urine samples were range from 95.3 to 109.0 % with the RSD less than 9.6 %. When employed for the enrichment of HA and 4-MHA, Fe 3 O 4 @SNW@Chitosan exhibited great potential as a candidate for preconcentration.
研究领域:
分析化学
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环境科学
·
医学检测
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DOI
高影响因子
Cell Host & Microbe
·
2024
·
IF 20.6
Ying-Xi Xu,Lu-Di Liu,Jiang-Yuan Zhu,Shan-Shan Zhu,Bing-Qi Ye,Jia-Lu Yang,Jing-Yi Huang,Zhi-Hao Huang,Yi You,Wen-Kang Li,Jia-Lin He,Min Xia,Yan Liu
Hyperuricemia induces inflammatory arthritis and accelerates the progression of renal and cardiovascular diseases. Gut microbiota has been linked to the development of hyperuricemia through unclear mechanisms. Here, we show that the abundance and centrality of Alistipes indistinctus are depleted in subjects with hyperuricemia. Integrative metagenomic and metabolomic analysis identified hippuric acid as the key microbial effector that mediates the uric-acid-lowering effect of A. indistinctus. Mechanistically, A. indistinctus-derived hippuric acid enhances the binding of peroxisome-proliferator-activated receptor γ (PPARγ) to the promoter of ATP-binding cassette subfamily G member 2 (ABCG2), which in turn boosts intestinal urate excretion. To facilitate this enhanced excretion, hippuric acid also promotes ABCG2 localization to the brush border membranes in a PDZ-domain-containing 1 (PDZK1)-dependent manner. These findings indicate that A. indistinctus and hippuric acid promote intestinal urate excretion and offer insights into microbiota-host crosstalk in the maintenance of uric acid homeostasis.
研究领域:
微生物学
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代谢组学
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药理学
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胃肠病学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Junlei Zheng,Haifeng Gao,Chengcheng Jin,Miaomiao Tian
A novel solid phase extraction (SPE) adsorbent, polyethylene glycol (PEG) immobilized zirconium ion-modified zeolite-imidazole framework (ZIF) molecular-imprinted polymer (ZIF@PEG@Zr@MIPs), was developed for detecting hippuric acid (HA) and 4-methylhippuric acid (4-MHA) in human urine using HPLC-UV. Zirconium ions (Zr 4+ ) anchored on the porous ZIF act as binding sites, facilitating coordination and electrostatic interaction with HA and 4-MHA carboxyl groups. Dopamine (DA) imprinting introduces additional sites, enabling π-π conjugation and hydrogen bonding with HA and 4-MHA, enhancing specific adsorption. The adsorbent, using HA as a template, demonstrated adsorption capacities of 37.98 mg g −1 for HA and 32.99 mg g −1 for 4-MHA. Imprinted factors ( IF ) were 2.68 for HA and 2.17 for 4-MHA, with a limit of detection (LOD) of 0.015 mg L −1 for HA and 0.011 mg L −1 for 4-MHA. The SPE-HPLC-UV method achieved 84.8–96.2% recovery and 0.3–2.2% relative standard deviation (RSD), illustrating its potential in health monitoring and environmental safety.
研究领域:
分析化学
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环境科学
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医学检测
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Dongsheng Zhao,Wenqian Li,Rongmei Wen,Nana Lei,Wencui Li,Xin Liu,Xiutang Zhang,Liming Fan
With the introduction of Eu3+ ions as the secondary fluorescent signal reporter and sensing active sites, a dual-emission ratiometric sensor of Eu3+@NiMOF (Eu3+ functional NiMOF) for hippuric acid (HA) detection in urine and serum was fabricated via the postsynthetic encapsulating strategy. Based on the two emission signals at 441 nm (turn-on) and 628 nm (turn-off), the produced Eu3+@NiMOF ratiometric sensor provided enhanced sensitivity, higher selectivity, and 9.7 times lower limits of detection (LOD) for the detection of HA (2.38 μM, 0.42 μg·mL–1) than that of the pristine NiMOF. Considering the high sensitivity and visualization results, further exploration of intelligent applications in the HA sensing process was carried out by constructing a tandem combinational logic gate to improve the practicability and convenience with the help of a smartphone. This work provides a promising approach for developing MOF-based ratiometric sensors to detect biomarkers.
研究领域:
生物传感
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Inorganic and Nano-Metal Chemistry
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2017
·
IF 0
Ziao Zong,Xiangmin Meng,Xin Li,Caifeng Bi,Yuhua Fan
A novel Ni(II) coordination polymer, {[Ni(C9H9N2O3)2(H2O)2]·H2O}n(1)(C9H11N2O3, p-Aminohippuric acid, PAH), has been synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectra, and thermal analysis. Single-crystal X-ray analysis reveals that each Ni(II) ion is six-coordinated by two coordinated water molecules, two carboxylate oxygen atoms, and two nitrogen atoms from PAH forming a octahedral geometry. The complex features a 2-nodal 2,4-connected network with unprecedented Schläfli symbol of (42)(4)2. In addition, the photocatalytic studies indicate that this complex is a good candidate for the photocatalytic degradation of rhodamine B.
研究领域:
材料化学
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配位化学
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环境科学
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产品关联
DOI
ANIMAL FEED SCIENCE AND TECHNOLOGY
·
2021
·
IF 3.247
Jian Gao,Bingbing Cheng,Yufeng Liu,Meng M. Li,Guangyong Zhao
Two consecutive experiments were conducted to investigate the effects of dietary supplementation with red cabbage extract (RCE) rich in anthocyanins on the nitrogen (N) metabolism in beef bulls and the nitrous oxide (N 2 O) emissions from the soil applied with the urine of beef bulls. In Experiment 1, 8 Simmental beef bulls (body weight 387.9 ± 40.7 kg) were used as experimental animals . Two levels of RCE, i.e. 0 and 114 g dry matter per day, were supplemented to a basal ration as experimental treatments. The animals and the treatments were allocated in a 2 × 2 crossover design. In Experiment 2, the static incubation technique was used to determine the N 2 O-N emissions from the soil applied with the urine samples collected from Experiment 1. The results of Experiment 1 indicated that RCE supplementation did not affect the N excretion, N retention, and N retention rate in beef bulls ( P > 0.10). However, RCE supplementation increased the ratio of hippuric acid-N/urinary N ( P < 0.05) and tended to increase the ratio of creatinine-N/urinary N ( P = 0.081) without changing the excretion of other urinary nitrogenous components ( P > 0.10). Plasma metabolome analysis indicated that RCE supplementation upregulated 12 metabolites while downregulated 18 metabolites ( P < 0.05). The results of Experiment 2 indicated that RCE supplementation reduced the estimated urine N 2 O-N emissions by 33.1% through decreasing the ratio of N 2 O-N/urine-N ( P < 0.05). In conclusion, RCE supplementation did not affect the N retention and N excretion of beef bulls, whereas it attenuated the urine N 2 O-N emissions of beef bulls through increasing urinary hippuric acid excretions.
研究领域:
动物科学
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环境科学
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营养学
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产品关联
DOI
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
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2020
·
IF 3.209
Zhipeng Wang,Hong Jiang,Xujiao Chen,Xinhua Song,Fengjing Xu,Fangchao Chen,Zhiguo Mao,Shouhong Gao,Wansheng Chen
A simple, rapid, reliable and sensitive ultra-high performance liquid chromatography tandem spectrometry (UHPLC-MS/MS) method was established for determination of eight serum protein-bound uremic toxins (hippuric acid, indoxyl sulfate, indole-3-acetic acid, kynurenic acid, L-kynurenine, melatonin, 3-carboxy-4-methyl-5-propyl-2-furanpropionic acid, 4-hydroxyhippuric acid) in serum from chronic kidney disease (CKD) dialysis patients. The chromatographic separation was achieved on an Atlantis T3 column (3 μm, 2.1 mm × 100 mm) using a gradient elution with acetonitrile (phase B) and 0.1% formic acid and 10 mmol/L ammonium acetate aqueous solution (phase A). The flow rate was 0.3 mL/min with analytical time of 5 min. The pretreatment procedure was developed with a simple protein precipitation and the hydrochlorothiazide was used as internal standard. The calibration ranges were set as 156.250-20000.000 ng/mL for indoxyl sulfate, hippuric acid, 3-carboxy-4-methyl-5-propyl-2-furanpropionic acid; 78.125-10000.000 ng/mL for L-kynurenine, indole-3-acetic acid and 4-hydroxyhippuricacid; 1.562-200.000 ng/mL for kynurenic acid; 0.078-10.000 ng/mL for melatonin. The UHPLC-MS/MS method for quantification of eight protein-bound uremic toxins was successfully developed and validated, and its clinical practicability was assessed on 81 serum samples from CKD patients.
研究领域:
分析化学
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临床化学
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肾病学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHIC SCIENCE
·
2016
·Vol. 55
·期 1
·60-68
·
IF 1.32
Gu Liqiang,Shi Huiyan,Zhang Ruowen,Wei Zhe,Bi Kai-Shun,Chen Xiao-Hui
In clinical diagnosis, serum creatinine (CR) was commonly used as the routine markers for the evaluation of kidney injury. To investigate the specific and sensitive nephrotoxicity biomarkers in different drug-induced kidney injury (DKI) models, receiver operating characteristic (ROC) analysis was applied in this study. The quantification data were acquired by the LC–MS determination. Histopathology results showed that different kinds of kidney injuries were observed in different DKI models (gentamycin, cisplatin, methotrexate and amphotericin B models), indicating the injuries might be caused by different mechanisms. Then, five typical biomarkers were simultaneously determined by a newly developed and validated LC–MS method. Uric acid, CR, hippuric acid, 3-indoxyl sulfate and phenaceturic acid were separated by an Apollo C18 column and a methanol/water (5 mM ammonium acetate) gradient program. The prepared calibration curves showed good linearity with regression coefficients all above 0.9927. Of all the analytes, the precision were below 9.9% and the accuracy were from −10.3% to 9.2%. ROC results showed that different nephrotoxicity biomarkers were specific in different DKI models. The changes of different biomarkers might be induced by different nephrotoxic mechanisms in the DKI models. These specific and sensitive biomarkers in combination with serum CR are promising in the clinical diagnosis of DKI.
研究领域:
毒理学
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临床医学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Pharmaceutics
·
2022
·Vol. 14
·期 11
·2307
·
IF 6.525
Xueyan Gou,Fenglin Ran,Jinru Yang,Yanrong Ma,Xin’an Wu
Background: Organic anion transporter 1 (OAT1) and OAT3 have an overlapping spectrum of substrates such that one can exert a compensatory effect when the other is dysfunctional. As a result, the knockout of either OAT1 or OAT3 is not reflected in a change in the excretion of organic anionic substrates. To date, only the mOAT1 and mOAT3 individual knockout mouse models have been available. Methods: In this study, we successfully generated aSlc22a6/Slc22a8double-knockout (KO) rat model using CRISPR/Cas9 technology and evaluated its biological properties. Results: The double-knockout rat model did not expressionmRNAfor rOAT1 or rOAT3 in the kidneys. Consistently, the renal excretion ofp-aminohippuric acid (PAH), the classical substrate of OAT1/OAT3, was substantially decreased in theSlc22a6/Slc22a8double-knockout rats. The relativemRNAlevel ofSlco4c1was up-regulated in KO rats. No renal pathological phenotype was evident. The renal elimination of the organic anionic drug furosemide was nearly abolished in theSlc22a6/Slc22a8knockout rats, but elimination of the organic cationic drug metformin was hardly affected. Conclusions: These results demonstrate that this rat model is a useful tool for investigating the functions of OAT1/OAT3 in metabolic diseases, drug metabolism and pharmacokinetics, and OATs-mediated drug interactions.Keywords:OAT1/OAT3;CRISPR/Cas9;gene knockout;pharmacokinetic
研究领域:
药理学
·
分子生物学
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遗传学
·
药物发现
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产品关联
DOI
PubMed
高影响因子
TALANTA
·
2024
·
IF 5.6
Wenhui Li,Hua Dong,Kejing Niu,Huan-Yu Wang,Wenqian Cheng,Hualong Song,An-Kang Ying,Xiaobing Zhai,Kefeng Li,Huijuan Yu,Dong-Sheng Guo,Yuefei Wang
The prevalence of metabolic disorders has been found to increase concomitantly with alternations in habitual diet and lifestyle, indicating the importance of metabolic health monitoring for early warning of high-risk status and suggest effective intervention strategies. Hippuric acid (HA), as one of the most abundant metabolites from the gut microbiota, holds potential as a regulator of metabolic health. Accordingly, it is imperative to establish an efficient, sensitive, and affordable method for large-scale population monitoring, revealing the association between HA level and metabolic disorders. Upon systematic screening of macrocycle•dye reporter pair, a supramolecular architecture (guanidinomethyl-modified calix [5] arene, GMC5A) was employed to sense urinary HA by employing fluorescein (Fl), whose complexation behavior was demonstrated by theoretical calculations, accomplishing quantification of HA in urine from 249 volunteers in the range of 0.10 mM and 10.93 mM. Excitedly, by restricted cubic spline, urinary HA concentration was found to have a significantly negative correlation with the risk of metabolic disorders when it exceeded 0.76 mM, suggesting the importance of dietary habits, especially the consumption of fruits, coffee, and tea, which was unveiled from a simple questionnaire survey. In this study, we accomplished a high throughput and sensitive detection of urinary HA based on supramolecular sensing with the GMC5A•Fl reporter pair, which sheds light on the rapid quantification of urinary HA as an indicator of metabolic health status and early intervention by balancing the daily diet.
研究领域:
分析化学
·
代谢组学
·
健康监测
·
超分子化学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2017
·Vol. 40
·期 18
·3696-3702
·
IF 2.557
Xuemei Li,Xiqian Li,Haijiao Zheng,Jiutong Ma,Guoxing Xu,Qiong Jia
Immobilized metal affinity chromatography has drawn great attention as a widespread separation and purification approach. In this work, ruthenium was firstly introduced into the preparation of immobilized metal affinity chromatography considering its affinity to N,O-donor ligands. A β-cyclodextrin-functionalized poly(glycidyl methacrylate-ethylene dimethacrylate) monolith was designed and employed as the supporting material in immobilized metal affinity chromatography. Thiosemicarbazide was introduced into the synthesis process, which not only acted as a bridge between β-cyclodextrin and glycidyl methacrylate, but also chelated with ruthenium because of its mixed hard-soft donor characteristics. The developed monolithic ruthenium(III)-immobilized metal affinity chromatography column was utilized for the adsorption and separation of hippuric acid, a biological indicator of toluene exposure. To achieve high extraction capacity, the parameters affecting the extraction efficiency were investigated with an orthogonal experiment design, L9 (3 4 ). Under the optimized conditions, the enrichment factor of hippuric acid was 16.7-fold. The method reproducibility was investigated in terms of intra- and interday precisions with relative standard deviations lower than 8.7 and 9.5%, respectively. In addition, ruthenium(III)-immobilized metal affinity chromatography material could be used for up to 80 extractions without an apparent change in extraction recovery.
研究领域:
分析化学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2017
·
IF 4.95
Yaran Du,Xiqian Li,Haijiao Zheng,Xueju Lv,Qiong Jia
In the present work, a novel metal-organic framework (MOF) fluorescent probe was prepared by post-synthetic modification of MIL-53-NH 2 (Al) with carboxylatocalix[4]arene (CC[4]A). The introduced CC[4]A could not only enhance the fluorescence performance and the recognition ability of the probe, but also sustain the high stability under UV light and moisture conditions. A method based on the as-synthesized CC[4]A@MIL-53-NH 2 (Al) probe was established for sensing hippuric acid . The detection limit was determined to be as low as 3.7 μg mL −1 . Over the concentration range of 0.005–3 mg mL −1 , the calibration curve was obtained with a satisfactory linearity ( R 2 = 0.993). The method was successfully used for rapid and highly selective direct monitor of hippuric acid in human urine. The sensor had great potential to be used as a simple diagnostic tool for hippuric acid in human urine which is regarded as a biological index of toluene exposure.
研究领域:
化学
·
材料科学
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分析化学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）