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Xiao ZJ, Ren J, Han Y, Shen F, Zheng JM, Qin WJ, Huan Y. [The anatomic zone localization based on biparametric MRI for the prediction of the risk degree of prostate cancer]. Zhonghua Yi Xue Za Zhi 2023; 103:1455-1460. [PMID: 37198107 DOI: 10.3760/cma.j.cn112137-20221219-02677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Objective: To investigate the anatomic zone localization based on biparametric magnetic resonance imaging (bpMRI) for the prediction of the risk degree in patients with prostate cancer. Methods: A total of 92 patients with prostate cancer confirmed by radical surgery in First Affiliated Hospital, Air Force Medical University, from January 2017 to December 2021 were collected. All patients underwent bpMRI (non-enhanced scan and DWI). According to ISUP grade, those patients were divided into low-risk group [≤grade 2, n=26, aged 71 (64.0, 5.2) years] and high-risk group[≥grade 3, n=66, aged 70.5 (63.0, 74.0) years]. The interobserver consistency test for ADC values was evaluated using the intraclass correlation coefficients (ICC). The differences in total prostate specific antigen (tPSA) between the two groups were compared and the χ2 test was used to compare the differences in the risk of prostate cancer in the transitional and peripheral zone. Independent correlation factors for prostate cancer risk were analyzed by logistic regression using high and low risk of prostate cancer as dependent variables, including factors such as anatomical zone, tPSA, apparent diffusion coefficient mean (ADCmean), apparent diffusion coefficient minimum (ADCmin) and age. Receiver operating characteristic (ROC) curves were plotted to assess the efficacy of the combined models of anatomical zone, tPSA, and anatomical partitioning+tPSA for diagnosing prostate cancer risk. Results: The ICC values of the ADCmean and ADCmin between the observers were 0.906 and 0.885, respectively, with good agreement. The tPSA in the low-risk group was lower than that in the high-risk group [19.64 (10.29, 35.18) ng/ml vs 72.42 (24.79, 187.98) ng/ml; P<0.001]; the risk of prostate cancer in the peripheral zone was higher than that in the transitional zone, and the difference was statistically significant (P<0.01). Multifactorial regression showed that anatomical zones (OR=0.120, 95%CI:0.029-0.501, P=0.004) and tPSA (OR=1.059, 95%CI:1.022-1.099, P=0.002) were risk factors for prostate cancer risk. The diagnostic efficacy of the combined model (AUC=0.895, 95%CI: 0.831-0.958) was better than the predictive efficacy of the single model for both anatomical partitioning (AUC=0.717, 95%CI:0.597-0.837) and tPSA (AUC=0.801, 95%CI: 0.714-0.887) (Z=3.91, 2.47; all P<0.05). Conclusions: The malignant degree of prostate cancer in peripheral zone was higher than that in transitional zone. Combination of anatomic zone located by bpMRI and tPSA can be used to predict the risk of prostate cancer before surgery, expected to provide support for patients to develop personalized treatment strategies.
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Affiliation(s)
- Z J Xiao
- Department of Radiology, First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - J Ren
- Department of Radiology, First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - Y Han
- Department of Radiology, First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - F Shen
- Department of Radiology, First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - J M Zheng
- Department of Radiology, First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - W J Qin
- Department of Urology, First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - Y Huan
- Department of Radiology, First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
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Zhang X, Jia Y, Fei Y, Lu Y, Liu X, Shan H, Huan Y. Cu/Au nanoclusters with peroxidase-like activity for chemiluminescence detection of α-amylase. Anal Methods 2023; 15:1553-1558. [PMID: 36883451 DOI: 10.1039/d3ay00029j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Herein, a novel chemiluminescence method was developed for efficient and sensitive detection of α-amylase activity. α-Amylase is closely related to our life, and α-amylase concentration is a marker for the diagnosis of acute pancreatitis. In this paper, Cu/Au nanoclusters with peroxidase-like activity were prepared using starch as a stabilizer. Cu/Au nanoclusters can catalyze H2O2 to generate reactive oxygen species and increase the CL signal. The addition of α-amylase makes the starch decompose and causes the nanoclusters to aggregate. The aggregation of the nanoclusters caused them to increase in size and decrease in the peroxidase-like activity, resulting in a decrease in the CL signal. α-Amylase was detected by the CL method of signal changes caused by dispersion-aggregation in the range of 0.05-8 U mL-1 with a low detection limit of 0.006 U mL-1. The chemiluminescence scheme based on the luminol-H2O2-Cu/Au NC system is of great significance for the sensitive and selective determination of α-amylase in real samples, and the detection time is short. This work provides new ideas for the detection of α-amylase based on the chemiluminescence method and the signal lasts for a long time, which can realize timely detection.
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Affiliation(s)
- Xiaoxu Zhang
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Yuying Jia
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Yanqun Fei
- Changchun Zhuoyi Biological Co., Ltd., Changchun, 130616, People's Republic of China
| | - Yongzhuang Lu
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Xiaoli Liu
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Hongyan Shan
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
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Liu X, Fan Q, Zhang X, Li M, Huan Y, Ma P, Song D, Fei Q. A FeS 2NPs-Luminol-MnO 2NSs system based on chemiluminescence resonance energy transfer platform for sensing glutathione. Talanta 2021; 240:123171. [PMID: 34954617 DOI: 10.1016/j.talanta.2021.123171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 11/26/2022]
Abstract
In this work, ferrous disulfide nanoparticles (FeS2NPs) with oxidase properties were synthesized, and a FeS2NPs-Luminol-MnO2 nanosheets (MnO2NSs) chemiluminescence resonance energy transfer (CRET) system was successfully established. Because of reaction with MnO2NSs, glutathione (GSH) can inhibit CRET between Luminol and MnO2NSs and recover the luminescence intensity of FeS2NPs-Luminol. Consequently, we developed a GSH sensor based on this chemiluminescence resonance energy transfer (CRET) system. Under optimal conditions, the FeS2NPs-Luminol-MnO2NSs sensing system showed very sensitive response to GSH in the range of 1 μM-500 μM. The limit of detection of GSH reached as low as 0.15 μM. Finally, the sensor was successfully used for the detection of GSH in serum.
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Affiliation(s)
- Xiaomin Liu
- College of Chemistry, Jilin University, Changchun, 130023, China
| | - Qian Fan
- Changchun Polytechnic, Changchun, 130033, China
| | - Xiaoxu Zhang
- College of Chemistry, Jilin University, Changchun, 130023, China
| | - Ming Li
- The National Institute of Metrology, Beijing, 100029, China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun, 130023, China
| | - Pinyi Ma
- College of Chemistry, Jilin University, Changchun, 130023, China
| | - Daqian Song
- College of Chemistry, Jilin University, Changchun, 130023, China
| | - Qiang Fei
- College of Chemistry, Jilin University, Changchun, 130023, China.
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Dong J, Huan Y, Huang B, Yi J, Liu YH, Sun BA, Wang WH, Bai HY. Unusually thick shear-softening surface of micrometer-size metallic glasses. ACTA ACUST UNITED AC 2021; 2:100106. [PMID: 34557757 PMCID: PMC8454631 DOI: 10.1016/j.xinn.2021.100106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022]
Abstract
The surface of glass is crucial for understanding many fundamental processes in glassy solids. A common notion is that a glass surface is a thin layer with liquid-like atomic dynamics and a thickness of a few tens of nanometers. Here, we measured the shear modulus at the surface of both millimeter-size and micrometer-size metallic glasses (MGs) through high-sensitivity torsion techniques. We found a pronounced shear-modulus softening at the surface of MGs. Compared with the bulk, the maximum decrease in the surface shear modulus (G) for the micro-scale MGs reaches ~27%, which is close to the decrease in the G upon glass transition, yet it still behaves solid-like. Strikingly, the surface thickness estimated from the shear-modulus softening is at least 400 nm, which is approximately one order of magnitude larger than that revealed from the glass dynamics. The unusually thick surface is also confirmed by measurements using X-ray nano-computed tomography, and this may account for the brittle-to-ductile transition of the MGs with size reductions. The unique and unusual properties at the surface of the micrometer-size MGs are physically related to the negative pressure effect during the thermoplastic formation process, which can dramatically reduce the density of the proximate surface region in the supercooled liquid state. The shear modulus and thickness of metallic glass (MG) surface is determined through torsion testing on micrometer-size wires The surface region of MG wires has a significant shear-modulus softening close to the supercooled liquid, yet still behaves solid-like The thickness of the soft surface of MG wires is at least 400 nm, which is about one order of magnitude larger than those revealed from surface dynamics The unusually thick surface accounts for the brittle-to-ductile transition of the MGs with size reduction
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Affiliation(s)
- J Dong
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Y Huan
- State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
| | - B Huang
- Institute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - J Yi
- Institute of Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Y H Liu
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - B A Sun
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.,Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - W H Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.,Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - H Y Bai
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.,College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.,Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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Fu Q, Liu R, Cui X, Zhao Y, Chi H, Lu Y, Fei Q, Feng G, Shan H, Huan Y. A Fast Dual-responsive OFF-ON Fluorescent Probe for Cysteine and Glutathione without Interference from Homocysteine. ANAL SCI 2021; 37:1541-1546. [PMID: 33896881 DOI: 10.2116/analsci.21p088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abnormal levels of biothiols, such as cysteine (Cys), homocystine (Hcy), and glutathione (GSH), are generally known to result in various diseases. A fast dual-responsive OFF-ON fluorescent probe HBO-AC was synthesized and developed. Non-fluorescent HBO-AC can sense Cys by regaining fluorescence at 444 nm within 10 min and a response to GSH by restoring fluorescence at 349 nm within 20 min. There is no mutual interference with Δλ ca. 100 nm. A novel method was developed by utilizing a low reaction rate between HBO-AC and Hcy to eliminate common interference from Hcy. A successful determination of Cys and GSH in fetal bovine serum (FBS) indicated that the probe had potential application for clinical diagnosis. Moreover, it was confirmed that HBO-AC can resist interference from protein to some extent, since FBS was not pretreated before use.
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Affiliation(s)
| | - Ruxin Liu
- College of Chemistry, Jilin University
| | - Xiaoqian Cui
- Department of Emergency and Critical Care, the Second Hospital of Jilin University
| | - Yuqi Zhao
- College of Chemistry, Jilin University
| | - Hui Chi
- College of Chemistry, Jilin University
| | | | - Qiang Fei
- College of Chemistry, Jilin University
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Dong B, Fan Q, Li M, Huan Y, Feng G, Shan H, Fei Q. Determination of tyrosine by sodium fluorescein-enhanced ABEI–H2O2–horseradish peroxidase chemiluminescence. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00272-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractIn this study, N-(4-aminobutyl)-N-ethylisoluminol (ABEI) was used as an energy donor, while sodium fluorescein was used as an enhancer and energy acceptor, which resulted in it producing resonance energy transfer and greatly increasing the strength of chemiluminiscence (CL). When horseradish peroxidase (HRP) is added, hydrogen peroxide (H2O2) will quickly separate into hydroxyl radicals (·OH) and superoxide ions (O2·−). If tyrosine (Tyr) is present in the system, the hydroxyl group on the benzene ring of Tyr robs ·OH and O2·− in the CL system, thereby reducing the intensity of CL. Based on this phenomenon, a luminescence system of ABEI and sodium fluorescein system was established to detect Tyr for the first time. This method has an ultra-low detection limit and a wide linear range, and is cheap and easy to operate. Under various optimal conditions, the linear range is from 3.0×10−8 to 3.0×10−5 mol/L, and the limit of detection is 2.4×10−8 mol/L. It has been successfully used in the detection of dairy products with satisfactory results.
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Abstract
Cross-linking mass spectrometry (XL-MS) has made significant progress in understanding the structure of protein and elucidating architectures of larger protein complexes. Current XL-MS applications are limited to targeting lysine, glutamic acid, aspartic acid, and cysteine residues. There remains a need for the development of novel cross-linkers enabling selective targeting of other amino acid residues in proteins. Here, a novel simple cross-linker, namely, [4,4'-(disulfanediylbis(ethane-2,1-diyl)) bis(1,2,4-triazolidine-3,5-dione)] (DBB), has been designed, synthesized, and characterized. This cross-linker can react selectively with tyrosine residues in protein through the electrochemical click reaction. The DBB cross-links produced the characteristic peptides before and after electrochemical reduction, thus permitting the simplified data analysis and accurate identification for the cross-linked products. This is the first time a cross-linker is developed for targeting tyrosine residues on protein without using photoirradiation or a metal catalyst. This strategy might potentially be used as a complementary tool for XL-MS to probe protein 3D structures, protein complexes, and protein-protein interaction.
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Affiliation(s)
- Lili Cui
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Yongge Ma
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China
| | - Ming Li
- Division of Chemical Metrology & Analytical Science, National Institute of Metrology, Beijing 100029, China
| | - Zhonglin Wei
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Hongmei Li
- Division of Chemical Metrology & Analytical Science, National Institute of Metrology, Beijing 100029, China
| | - Qiang Fei
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Lianyou Zheng
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China
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Bai XS, Bai G, Tang LD, Li Y, Huan Y, Wang H. MiR-195 alleviates ulcerative colitis in rats via MAPK signaling pathway. Eur Rev Med Pharmacol Sci 2021; 24:2640-2646. [PMID: 32196614 DOI: 10.26355/eurrev_202003_20533] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To study the effect of micro ribonucleic acid (miR)-195 on the inflammatory response of ulcerative colitis (UC) model rats and to explore its regulatory mechanism, thus providing a new scheme for the clinical treatment of UC. MATERIALS AND METHODS A rat model of UC was prepared by 2, 4, 6-trinitrobenzenesulfonic acid (TNBS)/ethanol assay, and the rats were randomly divided into Control group, Model group, and miR-195 mimic (miR-195 agomir) group. The disease activity index (DAI) in each group was observed. Hematoxylin and eosin (H&E) staining was utilized to detect the pathological changes in the rat colon tissues in each group. The levels of interleukin-6 (IL-6) and IL-1β in the colon tissues of the rats in each group were detected by enzyme-linked immunosorbent assay (ELISA). In addition, the messenger RNA (mRNA) and protein levels of p38 mitogen-activated protein kinase (p38 MAPK) and tumor necrosis factor-alpha (TNF-α) in the colon tissues of each group of rats were examined via Reverse Transcription-Polymerase Chain Reaction (RT-PCR) and Western blotting, respectively. RESULTS Compared with those in Control group, the rats in Model group had an increased DAI score, severely pathologically damaged colon tissues, raised levels of IL-6 and IL-1β in the colon tissues and significantly elevated mRNA and protein levels of p38 MAPK and TNF-α. In comparison with those in Model group, the DAI score was decreased, the pathological damage to the rat colon tissues was improved, the levels of IL-6 and IL-1β in the rat colon tissues were reduced, and the mRNA and protein levels of p38 MAPK and TNF-α were notably lowered in miR-195 agomir group. CONCLUSIONS MiR-195 mimics can alleviate the pathological damage to the colon and inflammatory responses in UC model rats, and its mechanism may be related to the inhibition on the p38 MAPK signaling pathway.
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Affiliation(s)
- X-S Bai
- Department of Gastroenterology, Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, China.
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Zhao Y, Fu Q, Cui X, Chi H, Lu Y, Liu X, Yu M, Fei Q, Feng G, Shan H, Huan Y. A colorimetric sensor for detecting thiourea based on inhibiting peroxidase-like activity of gold-platinum nanoparticles. Anal Methods 2021; 13:1069-1074. [PMID: 33576364 DOI: 10.1039/d0ay02283g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, gold-platinum nanoparticles (Au@PtNPs) with peroxidase-like activity were synthesized. In the absence of thiourea (TU), the Au@PtNPs can catalyze the decomposition of hydrogen peroxide, and oxidize 3,3',5,5'-tetramethylbenzidine dihydrochloride (TMB, colorless) into oxidized 3,3',5,5'-tetramethylbenzidine dihydrochloride (oxTMB, blue). The peroxidase-like activity of the Au@PtNPs is inhibited in the presence of TU, and TMB cannot be oxidized to oxTMB effectively, and no blue color could be observed. Based on this finding, a novel colorimetric sensor for detecting TU is proposed. The absorbance response curve showed a good linearity for the concentration of TU in the range of 10 nmol L-1 to 10 μmol L-1 with a correlation coefficient of R2 = 0.999, and the limit of detection is 9.57 nmol L-1. The colorimetric sensor possesses excellent selectivity, anti-interference ability, and application value in actual samples.
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Affiliation(s)
- Yuqi Zhao
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Qingjie Fu
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Xiaoqian Cui
- Department of Emergency and Critical Care, The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
| | - Hui Chi
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Yongzhuang Lu
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Xiaoli Liu
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Miao Yu
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Qiang Fei
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Guodong Feng
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Hongyan Shan
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
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Yu W, Liu Z, Gao S, Cui S, Yang X, Qiu W, Zhang H, Yu A, Huan Y. Correction: Determination of sulfonamides in blood using acetonitrile-salt aqueous two-phase extraction coupled with high-performance liquid chromatography and liquid chromatography-tandem mass spectrometry. Anal Methods 2021; 13:436. [PMID: 35225302 DOI: 10.1039/d0ay90172e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Correction for 'Determination of sulfonamides in blood using acetonitrile-salt aqueous two-phase extraction coupled with high-performance liquid chromatography and liquid chromatography-tandem mass spectrometry' by Wei Yu et al., Anal. Methods, 2013, 5, 5983-5989, DOI: 10.1039/C3AY40902C.
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Affiliation(s)
- Wei Yu
- Department of Hand Surgery, China-Japan Union Hospital, Jilin University, Xiantai Street 126, Changchun 130033, PR China.
| | - Zhongling Liu
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Shiqian Gao
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Shusen Cui
- Department of Hand Surgery, China-Japan Union Hospital, Jilin University, Xiantai Street 126, Changchun 130033, PR China.
| | - Xiao Yang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Wei Qiu
- Hepatobiliary and Pancreatic Surgery, The Bethune First Hospital, Jilin University, Xinmin Street No. 71, Changchun 130033, PR China
| | - Hanqi Zhang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Aimin Yu
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Yanfu Huan
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
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Liu R, Zhao Y, Cui X, Sun X, Fei Q, Feng G, Shan H, Huan Y. A turn‐on fluorescent probe based on quinoline and coumarin for rapid, selective and sensitive detection of hypochlorite in water samples. LUMINESCENCE 2020; 35:1231-1237. [DOI: 10.1002/bio.3882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 04/27/2020] [Accepted: 05/16/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Ruxin Liu
- College of Chemistry Jilin University Changchun People's Republic of China
| | - Yuqi Zhao
- College of Chemistry Jilin University Changchun People's Republic of China
| | - Xiaoqian Cui
- The Second Hospital of Jilin University Changchun People's Republic of China
| | - Xiaoxiao Sun
- College of Chemistry Jilin University Changchun People's Republic of China
| | - Qiang Fei
- College of Chemistry Jilin University Changchun People's Republic of China
| | - Guodong Feng
- College of Chemistry Jilin University Changchun People's Republic of China
| | - Hongyan Shan
- College of Chemistry Jilin University Changchun People's Republic of China
| | - Yanfu Huan
- College of Chemistry Jilin University Changchun People's Republic of China
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Cui L, Ma Y, Li M, Wei Z, Huan Y, Fei Q, Li H, Zheng L. An acidic residue reactive and disulfide bond-containing cleavable cross-linker for probing protein 3D structures based on electrochemical mass spectrometry. Talanta 2020; 216:120964. [PMID: 32456912 DOI: 10.1016/j.talanta.2020.120964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 03/21/2020] [Accepted: 03/23/2020] [Indexed: 12/27/2022]
Abstract
Cross-linking mass spectrometry (XL-MS) has attracted broad attention because of the capability to probe three-dimensional structure of proteins. Up to now, several amine-reactive cross-linkers have been developed for characterization of proteins and protein complexes. However, spatial information retrieved by XL-MS is still limited, partly because the strategies using an acidic residue reactive cross-linker have been rarely reported. In this paper, an acidic residue (e.g. aspartic acid, glutamic acid)-specific, disulfide bond-containing, cleavable cross-linker with a length of 13.1 Å, named 3,3'-dithiobis(propanoic dihydrazide), was presented for the first time. In addition, a novel approach using the cross-linker was proposed for unambiguous characterization of peptides and proteins with disulfide bonds. After cross-linked, the peptides could be electrochemically reduced, then characterized by high performance liquid chromatography mass spectrometry. For demonstration, the approach has been adopted to characterize the emideltide, insulin, and myoglobin, of which four pairs of intrachain cross-links have been successfully identified in myoglobin. The results showed that the cross-links displayed predictable fragmentation pattern upon collision induced dissociation (CID), thus admitting simplifying data analysis. In summary, this work introduces a novel type of cross-linker utilized for cross-linking and a new strategy to XL-MS technology for comprehensively understanding the three-dimensional structure of proteins.
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Affiliation(s)
- Lili Cui
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Yongge Ma
- School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, China
| | - Ming Li
- Department of Chemistry, National Institute of Metrology, Beijing, 100029, China.
| | - Zhonglin Wei
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun, 130012, China.
| | - Qiang Fei
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Hongmei Li
- Department of Chemistry, National Institute of Metrology, Beijing, 100029, China.
| | - Lianyou Zheng
- School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, China
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Sun X, Zhao Y, Cui X, Liu R, Yu M, Fei Q, Liu Q, Feng G, Shan H, Huan Y. Colorimetric sensing of iodide ions based on unmodified gold nanoparticles and the distinctive antiaggregation-to-aggregation process. LUMINESCENCE 2020; 35:1036-1042. [PMID: 32515169 DOI: 10.1002/bio.3813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/29/2020] [Accepted: 04/05/2020] [Indexed: 12/12/2022]
Abstract
A highly sensitive and selective colorimetric analysis method based on unmodified gold nanoparticles (AuNPs) to detect iodide ions (I- ) in solution in the presence of hexadecyl trimethyl ammonium bromide (CTAB) and mercury ions (Hg2+ ) has been successfully developed. Hg2+ could form a gold amalgam with AuNPs to protect AuNPs from CTAB-induced aggregation caused by the electrostatic attraction between CTAB and citrate ion-covered AuNPs. When a mixture of Hg2+ and I- was added to the solution of AuNPs, the formation of the HgI2 complex destroyed the protection of Hg2+ for AuNPs, which led to the aggregation of AuNPs accompanied with the change in colour of the solution from red to grey black and decrease in the absorbance of AuNPs at 520 nm. There was a good linear relationship between A520nm and I- concentration from 0 to 800 nM with a low limit of detection (LOD) of 4.2 nM. Furthermore, this simple and reliable colorimetric sensor has been applied successfully to the detection of I- in practical samples.
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Affiliation(s)
- Xiaoxiao Sun
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Yuqi Zhao
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Xiaoqian Cui
- Department of Emergency and Critical Care, the Second Hospital of Jilin University, Changchun, 130041, People's Republic of China
| | - Ruxin Liu
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Miao Yu
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Qiang Fei
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Qingwen Liu
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Guodong Feng
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Hongyan Shan
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
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14
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Zhao Y, Liu R, Cui X, Fu Q, Yu M, Fei Q, Feng G, Shan H, Huan Y. Colorimetric Sensor for Thiocyanate Based on Anti-aggregation of Gold Nanoparticles in the Presence of 2-Aminopyridine. ANAL SCI 2020; 36:1165-1169. [PMID: 32336728 DOI: 10.2116/analsci.20p035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Based on the anti-aggregation mechanism of citrate stabilized gold nanoparticle (AuNPs), a new specific and sensitive colorimetric sensor for thiocyanate (SCN-) was developed. In this scheme, the AuNPs were aggregated in the presence of the aggregating agent 2-aminopyridine (2-AP) due to electrostatic attraction. The solution color changed from red to blue. When SCN- was present, SCN- formed a sulfur-gold bond with the AuNPs to protect the AuNPs from aggregation. Thiocyanate can be detected by the color change of the solution from blue to red. The results showed that the absorbance ratio A675/A520 was linear with the concentration of SCN- in the range of 0.4 - 1.2 μmol L-1 by UV-Vis spectroscopy. The limit of detection (LOD) of this assay was 0.37 μmol L-1. The system also had excellent selectivity and anti-interference ability. In addition, this method was successfully used for the detection of SCN- in actual water samples and achieved good results.
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Affiliation(s)
- Yuqi Zhao
- College of Chemistry, Jilin University
| | - Ruxin Liu
- College of Chemistry, Jilin University
| | - Xiaoqian Cui
- Department of Emergency and Critical Care, The Second Hospital of Jilin University
| | | | - Miao Yu
- College of Chemistry, Jilin University
| | - Qiang Fei
- College of Chemistry, Jilin University
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15
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Wang Z, Dong B, Cui X, Fan Q, Huan Y, Shan H, Feng G, Fei Q. Core-shell Au@Pt Nanoparticles Catalyzed Luminol Chemiluminescence for Sensitive Detection of Thiocyanate. ANAL SCI 2020; 36:1045-1051. [PMID: 32115463 DOI: 10.2116/analsci.19p475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this study, core-shell Au@Pt nanoparticles (Au@Pt NPs) with peroxidase catalytic activity were synthesized by the seed-mediated method, and were used to catalyze the reaction of luminol-H2O2 to enhance the chemiluminescence (CL) intensity. It was found that thiocyanate (SCN-) can effectively inhibit the catalytic activity of Au@Pt NPs. Based on this phenomenon, a method to detect SCN- by using the Au@Pt NPs-catalytic luminol-H2O2 CL system was established, which has an ultra-low detection limit and an ultra-wide linear range, as well as the advantages of being simple and having low-cost and convenient operation. The research mechanism indicated that SCN- could be adsorbed on the surface of Au@Pt NPs and occupies the active sites of Pt nanostructures, which led to a decrease in the amount of Pt0 and a loss of the excellent catalytic activity of Au@Pt NPs. After optimizing the experimental conditions, this assay for detecting SCN- exhibited a good linear range from 5 to 180 nM, and the low detection limit was 2.9 nM. In addition, this approach has been successfully applied to the detection of SCN- in tap-water samples, which has practical application value and embodies good development prospects.
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Affiliation(s)
- Ze Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Bin Dong
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Xiaoqian Cui
- Department of Emergency and Critical Care, the Second Hospital of Jilin University
| | | | - Yanfu Huan
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Hongyan Shan
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Guodong Feng
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Qiang Fei
- Department of Analytical Chemistry, College of Chemistry, Jilin University
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16
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Wang Z, Dong B, Feng G, Shan H, Huan Y, Fei Q. Water-soluble Hemin-mPEG-enhanced Luminol Chemiluminescence for Sensitive Detection of Hydrogen Peroxide and Glucose. ANAL SCI 2019; 35:1135-1140. [PMID: 31281131 DOI: 10.2116/analsci.19p150] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In the present study, we synthesized a water-soluble substance (Hemin-mPEG) at room temperature by using hemin and poly(ethylene glycol) methyl ether (mPEG). It was found that the Hemin-mPEG maintained the excellent catalytic activity inherited from hemin, and was first used to catalyze a luminol-H2O2 chemiluminescence (CL) system to generate an intense and slow CL signal. The results of a mechanism research showed that the presence of Hemin-mPEG could promote the production of oxygen-relative radicals from H2O2 and dissolved oxygen in solution. Based on this mechanism, an ultra-sensitive, cheap and simply practical sensor for detecting glucose and H2O2 was developed. Under the most optimal experimental conditions, H2O2 and glucose detection results exhibited a good linear range from 0.002 to 3 μM and from 0.02 to 4 μM, respectively, and the detection limits were 1.8 and 10 nM, respectively. This approach has been successfully used to detect glucose in actual biological samples, and achieved good results.
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Affiliation(s)
- Ze Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Bin Dong
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Guodong Feng
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Hongyan Shan
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Yanfu Huan
- Department of Analytical Chemistry, College of Chemistry, Jilin University
| | - Qiang Fei
- Department of Analytical Chemistry, College of Chemistry, Jilin University
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17
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Cui L, Ma Y, Li M, Wei Z, Fei Q, Huan Y, Li H, Zheng L. Disulfide linkage assignment based on reducing electrochemistry and mass spectrometry using a lead electrode. Talanta 2019; 199:643-651. [PMID: 30952309 DOI: 10.1016/j.talanta.2019.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/26/2019] [Accepted: 03/02/2019] [Indexed: 11/29/2022]
Abstract
The study of disulfide linkage is a crucial part of the quality assessment of biopharmaceutical products because disulfide bonds stabilize the tertiary structure of proteins and maintain protein functions. Therefore, a suitable method is highly required for disulfide linkage assignment when nested disulfide bonds formed with closely spaced cysteine residues. A novel approach for disulfide linkage assignment of disulfide-rich peptides and proteins via electrochemical reduction on a lead electrode with mass spectrometry is presented in this paper. The method features partial electrochemical reduction and alkylation of peptides followed by alkylated peptide sequencing based on tandem mass spectrometry. Lead was chosen for the first time as an electrode material for disulfide bond reduction, because it has the advantages of maintenance free (only infrequent polishing needed), easy operation in DC mode, and reusability. Without any special sample preparation and any chemical reduction agents, disulfide bond in peptides can be cleaved rapidly. The new method was successfully tested with two peptides and one protein containing nested disulfide bonds.
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Affiliation(s)
- Lili Cui
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Yongge Ma
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China
| | - Ming Li
- Department of Chemistry, National Institute of Metrology, Beijing 100029, China.
| | - Zhonglin Wei
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Qiang Fei
- College of Chemistry, Jilin University, Changchun 130012, China.
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Hongmei Li
- Department of Chemistry, National Institute of Metrology, Beijing 100029, China
| | - Lianyou Zheng
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China
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18
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Chai G, Liu Q, Fei Q, Zhang J, Sun X, Shan H, Feng G, Huan Y. A selective and sensitive fluorescent sensor for cysteine detection based on bi-8-carboxamidoquinoline derivative and Cu2+
complex. LUMINESCENCE 2017; 33:153-160. [DOI: 10.1002/bio.3385] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/02/2017] [Accepted: 07/18/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Guoping Chai
- College of Chemistry; Jilin University; Changchun People's Republic of China
| | - Qingwen Liu
- College of Chemistry; Jilin University; Changchun People's Republic of China
| | - Qiang Fei
- College of Chemistry; Jilin University; Changchun People's Republic of China
| | - Jinling Zhang
- College of Chemistry; Jilin University; Changchun People's Republic of China
| | - Xiaoxiao Sun
- College of Chemistry; Jilin University; Changchun People's Republic of China
| | - Hongyan Shan
- College of Chemistry; Jilin University; Changchun People's Republic of China
| | - Guodong Feng
- College of Chemistry; Jilin University; Changchun People's Republic of China
| | - Yanfu Huan
- College of Chemistry; Jilin University; Changchun People's Republic of China
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19
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Mi H, Guan M, Liu J, Shan H, Fei Q, Huan Y, Feng G. Conjugated polymer with carboxylate groups-Hg 2+ system as a turn-on fluorescence probe for label-free detection of cysteine-containing compounds. Spectrochim Acta A Mol Biomol Spectrosc 2017; 176:168-173. [PMID: 28092827 DOI: 10.1016/j.saa.2017.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 12/22/2016] [Accepted: 01/02/2017] [Indexed: 06/06/2023]
Abstract
In this work, a turn on fluorescent sensor, based on Hg2+ coordination conjugated polymer, was developed to detect cysteine-containing compounds. The fluorescence of conjugated polymer (poly(2,5-bis (sodium 4-oxybutyrate) -1,4 - phenylethynylene-alt-1,4-phenyleneethynylene; PPE-OBS) would be quenched by Hg2+ because of the coordination-induced aggregation and electron transfers of PPE-OBS toward Hg2+. When there were some cysteine-containing compounds in PPE-OBS-Hg2+ system, the fluorescence of PPE-OBS would be recovered. It indicated that the PPE-OBS-Hg2+ system could be used to detect cysteine-containing compounds. Under the optimized conditions, the experiment results showed that there were particularly linear range, high sensitivity and selectivity over other amino acids. The limit of detection (LOD) of cysteine (Cys), homocysteine (Hcy) and glutathione (GSH) were 0.725μmolL-1, 0.982μmolL-1 and 1.21μmolL-1 by using this sensor. In addition, Cys standard recovery in several green tea drink and honey samples was also demonstrated. The recovery of Cys was range from 96.3 to 105.0% and RSD was less than 3.25%. The satisfactory results demonstrated that the proposed method could be as a potential fluorescent method for determining cysteine-containing compounds in real samples.
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Affiliation(s)
- Hongyu Mi
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Mingming Guan
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Jilin Liu
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Hongyan Shan
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Qiang Fei
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Guodong Feng
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China.
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20
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Mi H, Guan M, Shan H, Fei Q, Huan Y, Zhang Z, Feng G. Highly Sensitive Fluorescence Detection of Hg 2+ Based on a Water-soluble Conjugated Polymer with Carboxylate Groups. ANAL SCI 2016; 32:1039-1045. [PMID: 27725601 DOI: 10.2116/analsci.32.1039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A label-free, highly selective, and highly sensitive fluorescent sensor to detect Hg2+ was developed using a water-soluble conjugated polymer with carboxylate groups (poly(2,5-bis(sodium 4-oxybutyrate)-1,4-phenylethynylene-alt-1,4-phenyleneethynylene, PPE-OBS) in this work. The fluorescence of PPE-OBS would be quenched because of the effect among the unique coordination-induced aggregation and electron transfers of PPE-OBS toward Hg2+. The linear relationship between the fluorescence intensity and concentration of Hg2+ was observed within the range from 6 × 10-8 to 8 × 10-5 mol L-1 (R2 = 0.9985), and the limit of detection was 2.10 × 10-9 mol L-1. The proposed method was applied to detect Hg2+ in environmental water samples, and satisfactory results were obtained.
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Affiliation(s)
- Hongyu Mi
- Department of Analytical Chemistry, College of Chemistry, Jilin University
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21
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Feng G, Mi H, Fei Q, Shan H, Wang B, Xu H, Li G, Chen F, Huan Y. A facile fluorescent chemosensor based on a water-soluble porphyrin for Mo(6+) in aqueous solution. Spectrochim Acta A Mol Biomol Spectrosc 2016; 167:122-126. [PMID: 27262661 DOI: 10.1016/j.saa.2016.05.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 05/24/2016] [Accepted: 05/24/2016] [Indexed: 05/16/2023]
Abstract
A novel water-soluble porphyrin (5,10,15,20-tetra(3-ethoxy-4-hydroxy-5-sulfonate) phenylporphyrin, H2TEHPPS) was synthesized. H2TEHPPS exhibited high sensitivity and selectivity towards Mo(6+). The enhanced fluorescence response of H2TEHPPS after titration with Mo(6+) in aqueous solution at pH3.5 was attributed to the formation of an inclusion complex between the porphyrin ring and Mo(6+), which R(2)=0.999 from 10 to 1000μgL(-1), providing a detection limit of 1.5μgL(-1). The fluorescence response of H2TEHPPS towards Mo(6+) showed excellent selectivity over other transition metal cations.
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Affiliation(s)
- Guodong Feng
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China; State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Hongyu Mi
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Qiang Fei
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Hongyan Shan
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Baojun Wang
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Hui Xu
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Guanghua Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Fei Chen
- Changchun Institute of Metrology, Changchun 130012, China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
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22
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Liu Q, Huan Y, Zheng Q, Fei Q, Fei Y, Fan Q, Feng G, Shan H. A selective and sensitive fluorescence probe for Se(IV) based on fluorescence quenching of gatifloxacin. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-6015-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Li Q, Chen CF, Wang DY, Lü YT, Huan Y, Fang SX, Han Y, Ge RC, Chen XW. Changes in growth factor levels in the cerebrospinal fluid of autism patients after transplantation of human umbilical cord blood mononuclear cells and umbilical cord-derived mesenchymal stem cells. Genet Mol Res 2016; 15:gmr7526. [PMID: 27323064 DOI: 10.4238/gmr.15027526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of the current study was to evaluate the levels of growth factors in the cerebrospinal fluid (CSF) of patients with autism, after transplantation of human umbilical cord blood mononuclear cells (CBMNCs) and umbilical cord-derived mesenchymal stem cells (UCMSCs). Twenty patients received two CBMNC intravenous and intrathecal infusions, each followed by two UCMSC intrathecal injections. A 2-mL sample of CSF was taken before each intrathecal injection. CSF levels of hepatocyte growth factor (HGF), brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF) and basic fibroblast growth factor (bFGF) were determined by an enzyme-linked immunosorbent assay (ELISA). All data are reported as means ± SD and were analyzed using the SPSS 10.0 software. One-way analysis of variance with post-hoc F- and Q-tests was performed for comparison. HGF, BDNF and NGF levels in the CSF were significantly increased after transplantation (P < 0.05), while bFGF levels did not change significantly. Therefore, transplantation of CBMNCs and UCMSCs could increase HGF, BDNF and NGF levels in the CSF of patients with autism.
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Affiliation(s)
- Q Li
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Shandong Jiaotong Hospital, Jinan, China
| | - C-F Chen
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - D-Y Wang
- Shandong Jiaotong Hospital, Jinan, China
| | - Y-T Lü
- Shandong Jiaotong Hospital, Jinan, China
| | - Y Huan
- Shandong Jiaotong Hospital, Jinan, China
| | - S-X Fang
- Shandong Jiaotong Hospital, Jinan, China
| | - Y Han
- Shandong Jiaotong Hospital, Jinan, China
| | - R-C Ge
- Shandong Jiaotong Hospital, Jinan, China
| | - X-W Chen
- Shandong Jiaotong Hospital, Jinan, China
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24
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Schlimme BS, Achenbach P, Beričič J, Böhm R, Bosnar D, Correa L, Distler M, Esser A, Fonvieille H, Friščić I, Griffioen KA, Huan Y, Kegel S, Kohl Y, Merkel H, Mihovilovič M, Müller J, Müller U, Pochodzalla J, Schoth M, Schulz F, Sfienti C, Širca S, Štajner S, Thiel M, Weber A. Deuteron form factor measurements at low momentum transfers. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611304017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Xu H, Fei Q, Shan H, Huan Y, Mi H, Zhang H, Li G, Feng G. An Improved Pneumatic Nebulization Gas-Solid Microextraction Device Used to Detect Triazine Herbicides in White Spirit. ANAL SCI 2016; 32:183-8. [PMID: 26860563 DOI: 10.2116/analsci.32.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The pneumatic nebulization gas-solid microextraction device fascinating us is because it directly atomized organic samples to cross a solid-phase microextraction (SPME) cartridge without any pretreatment. In this work, both the spray chamber and SPME column of the extraction device were heated. We found that this would significantly improve the extraction efficiency of this method. Then, this method was used to detect seven triazine herbicides (atraton, desmetryn, atrazine, terbumeton, terbuthylazine, terbutryn, and dipropetryn) in drinking alcohol samples. The experimental results indicated that this extraction procedure could conveniently, efficiently and accurately concentrate any triazine herbicides from drinking alcohol samples. The limits of detection (LODs) were from 0.08 to 0.23 μg L(-1), the limits of quantification (LOQs) were from 0.27 to 0.78 μg L(-1). We used this method to detect triazine herbicides in five white spirit samples. Four concentrations were chosen (5, 25, 50 and 100 μg L(-1)) as the amounts of spikes to investigate the recovery and precision of the present PN-GSME method. The recoveries ranged from 95.91 to 106.67%. The relative standard deviations were not more than 6.51%. Also this method matches the requirement of the maximum residue limits of the European Union.
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Affiliation(s)
- Hui Xu
- College of Chemistry, Jilin University
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26
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Liu Q, Fei Q, Fei Y, Fan Q, Shan H, Feng G, Huan Y. A novel colorimetric probe derived from isonicotic acid hydrazide for copper (II) determination based on internal charge transfer (ICT). Spectrochim Acta A Mol Biomol Spectrosc 2015; 151:785-789. [PMID: 26172465 DOI: 10.1016/j.saa.2015.07.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 06/18/2015] [Accepted: 07/07/2015] [Indexed: 06/04/2023]
Abstract
A novel isonicotic acid hydrazide Schiff base derivative N'-(3,5-di-tert-butyl-2-hydroxy-benzylidene) isonicotinohydrazide (DHIH) has been synthesized and developed as a high selective and sensitive colorimetric probe for Cu(2+) determination. Addition of Cu(2+) to the solution of DHIH resulted in a rapid color change from colorless to yellow together with an obvious new absorption band appeared at the range of 400-440 nm by forming a 1:1 complex. Experimental results indicated that the DHIH could provide absorption response to Cu(2+) with a linear dynamic range from 1.0×10(-5) to 1.0×10(-4)mol/L. The detection limit of Cu(2+) was 5.24×10(-7)mol/L with good tolerance of other metal ions.
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Affiliation(s)
- Qing Liu
- College of Chemistry, Jilin University, Changchun 130023, PR China
| | - Qiang Fei
- College of Chemistry, Jilin University, Changchun 130023, PR China
| | - Yanqun Fei
- Changchun Weiersai Biotec Pharmaceutical Co., Ltd., Changchun 130616, PR China
| | - Qian Fan
- Changchun Vocational Institute of Technology, Changchun 130033, PR China
| | - Hongyan Shan
- College of Chemistry, Jilin University, Changchun 130023, PR China
| | - Guodong Feng
- College of Chemistry, Jilin University, Changchun 130023, PR China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Changchun 130023, PR China.
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27
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Li Q, Chen CF, Wang DY, Lü YT, Huan Y, Liu M, Ge RC, Chen XW, Qi HS, An L, Hu X. Transplantation of umbilical cord blood mononuclear cells increases levels of nerve growth factor in the cerebrospinal fluid of patients with autism. Genet Mol Res 2015; 14:8725-32. [DOI: 10.4238/2015.july.31.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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28
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Gayiti MRY, Li XY, Zulifeiya AK, Huan Y, Zhao TN. Comparison of the effects of water and traditional delivery on birthing women and newborns. Eur Rev Med Pharmacol Sci 2015; 19:1554-1558. [PMID: 26004591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE The objective our study was to compare the respective effects of water and traditional delivery on birthing women and newborns. PATIENTS AND METHODS 120 primiparas with singlet pregnancy, head-down foetus position, and term delivery were randomly divided into two groups. Sixty birthing women were included in traditional delivery group, while other sixty women underwent water delivery. The duration of labour and the volume of blood lost within 24 hours were compared between both groups. Furthermore, perineum condition, degree of delivery pain, and Apgar scores (1st and 5th minute) were also compared. RESULTS The total duration of labour and the volume of lost blood were comparable between both delivery methods. The perineum integrity and episiotomy rates were significantly (p < 0.05 for both comparisons) better in water delivery group (respectively, 25.00% vs. 8.33% and 1.67% vs. 20% in traditional delivery group). Furthermore, the degree of delivery pain was also more favourable in water delivery group. The Apgar scores were comparable between both delivery methods. CONCLUSIONS Water delivery can reduce delivery pain without increasing the risk to birthing women and newborns.
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Affiliation(s)
- M-R-Y Gayiti
- Department of Obstetrics, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China.
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Yuan JL, Wang FL, Yi XM, Qin WJ, Wu GJ, Huan Y, Yang LJ, Zhang G, Yu L, Zhang YT, Qin RL, Tian CJ. More than 10 years survival with sequential therapy in a patient with advanced renal cell carcinoma: a case report. Braz J Med Biol Res 2014; 48:34-38. [PMID: 25493380 PMCID: PMC4288490 DOI: 10.1590/1414-431x20144096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 09/22/2014] [Indexed: 12/04/2022] Open
Abstract
Although radical nephrectomy alone is widely accepted as the standard of care in
localized treatment for renal cell carcinoma (RCC), it is not sufficient for the
treatment of metastatic RCC (mRCC), which invariably leads to an unfavorable outcome
despite the use of multiple therapies. Currently, sequential targeted agents are
recommended for the management of mRCC, but the optimal drug sequence is still
debated. This case was a 57-year-old man with clear-cell mRCC who received multiple
therapies following his first operation in 2003 and has survived for over 10 years
with a satisfactory quality of life. The treatments given included several surgeries,
immunotherapy, and sequentially administered sorafenib, sunitinib, and everolimus
regimens. In the course of mRCC treatment, well-planned surgeries, effective
sequential targeted therapies and close follow-up are all of great importance for
optimal management and a satisfactory outcome.
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Affiliation(s)
- J L Yuan
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - F L Wang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - X M Yi
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - W J Qin
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - G J Wu
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Y Huan
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - L J Yang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - G Zhang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - L Yu
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Y T Zhang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - R L Qin
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - C J Tian
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
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Liu Y, Fei Q, Shan H, Cui M, Liu Q, Feng G, Huan Y. A novel fluorescent ‘off-on-off’ probe for relay recognition of Zn2+ and Cu2+ derived from N,N-bis(2-pyridylmethyl)amine. Analyst 2014; 139:1868-75. [DOI: 10.1039/c3an02230g] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Song C, Fei Q, Shan H, Feng G, Cui M, Liu Y, Huan Y. A novel 2-(2-Formyl-4-methyl-phenoxy)-N-phenyl-acetamide-based fluorescence turn-on chemosensor for selenium determination with high selectivity and sensitivity. Spectrochim Acta A Mol Biomol Spectrosc 2013; 116:497-500. [PMID: 23973600 DOI: 10.1016/j.saa.2013.07.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Revised: 07/02/2013] [Accepted: 07/25/2013] [Indexed: 06/02/2023]
Abstract
A novel turn-on fluorescent chemosensor, 2-(2-Formyl-4-methyl-phenoxy)-N-phenyl-acetamide (FMPPA) was designed and synthesized, and its photophysical properties were characterized. Upon coordination with Se (IV), the chemosensor showed incredible fluorescence enhancement (turn-on), other alkali, alkaline earth, transitional metal ions, and common anions including Li(+), Na(+), K(+), Rb(+), Cs(+), Be(2+), Mg(2+), Ca(2+), Sr(2+), Ba(2+), Ni(2+), Cu(2+), Cd(2+), Zn(2+), Mn(2+), As(3+), Pt(4+), V(5+), Fe(3+), Mo(6+), Al(3+), CO3(2-), Cl(-), SCN(-), AC(-), NO3(-), F(-), SO4(2-) had no significant interference on Se (IV) determination. The chemosensor exhibits a dynamic response range for Se (IV) from 3.32 × 10(-7) to 2.63 × 10(-6)M, with a detection limit of 9.38 × 10(-9)M (3σ).
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Affiliation(s)
- Cairui Song
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China
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He J, Huan Y, Qiao Q, Zhang J, Zhang JS. Renal carcinomas associated with Xp11.2 translocations: are CT findings suggestive of the diagnosis? Clin Radiol 2013; 69:45-51. [PMID: 24156792 DOI: 10.1016/j.crad.2013.08.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2013] [Revised: 07/23/2013] [Accepted: 08/05/2013] [Indexed: 12/16/2022]
Abstract
AIM The purpose of the present study was to summarize the computed tomography (CT) features of renal carcinomas associated with Xp11.2 translocations, and determine whether the diagnosis can be reliably deduced from imaging findings. MATERIALS AND METHODS Radiological studies of six patients (aged from 9-29 years) with renal carcinoma associated with Xp11.2 translocations were retrospectively analysed. RESULTS The tumours varied in size from 3.3-11 cm (mean 5.4 cm). Unenhanced CT and cortical, medullary, and pelvic-phase contrast-enhanced CT imaging was undertaken in all cases. Unenhanced CT revealed that tumours had a relatively increased radiodensity (4/6, ranged from 45-60 HU) and suggested the possibility of diffuse haemorrhage. Three of the six cases showed irregular and boundary calcification of the lesion. Contrast-enhanced CT showed relatively well demarcated tumours with heterogeneous enhancement (6/6). Prolonged enhancement of tumours might be a common sign (6/6) in Xp11.2 translocations. Three out of the six cases were combined with retroperitoneal lymph nodes metastasis. CONCLUSION Renal carcinomas associated with Xp11.2 translocations should be considered, particularly in children and young patients, when the lesion has calcification and is hyper-dense on unenhanced CT, and has prolonged enhancement on contrast-enhanced images.
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Affiliation(s)
- J He
- Department of Radiology, Xijing Hospital, China
| | - Y Huan
- Department of Radiology, Xijing Hospital, China
| | - Q Qiao
- Department of General Surgery, Tangdu Hospital, China
| | - J Zhang
- Department of Pathology, State Key Laboratory of Tumor Biology, Xijing Hospital, Fourth Military Medical University, China.
| | - J S Zhang
- Department of Radiology, Xijing Hospital, China.
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Shi J, Xu X, Li X, Liu C, Shao M, Zhang H, Wang Z, Zhang H, Huan Y. Determination of lignans in Wuweizi by using magnetic bar microextraction and HPLC. J Sep Sci 2013; 36:3527-33. [PMID: 24106035 DOI: 10.1002/jssc.201300635] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 08/20/2013] [Accepted: 09/08/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Jiayuan Shi
- College of Chemistry; Jilin University; Changchun P. R. China
| | - Xu Xu
- College of Chemistry; Jilin University; Changchun P. R. China
| | - Xinyu Li
- Department of Laboratory; China-Japan Union Hospital, Jilin University; Changchun P. R. China
| | - Chao Liu
- Department of Plastic and Reconstructive Surgery; First Hospital, Jilin University; Changchun P. R. China
| | - Mingyuan Shao
- College of Chemistry; Jilin University; Changchun P. R. China
| | - Huijie Zhang
- College of Chemistry; Jilin University; Changchun P. R. China
| | - Zhibing Wang
- College of Chemistry; Jilin University; Changchun P. R. China
| | - Hanqi Zhang
- College of Chemistry; Jilin University; Changchun P. R. China
| | - Yanfu Huan
- College of Chemistry; Jilin University; Changchun P. R. China
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Yu W, Liu Z, Gao S, Cui S, Yang X, Qiu W, Zhang H, Yu A, Huan Y. Determination of sulfonamides in blood using acetonitrile-salt aqueous two-phase extraction coupled with high-performance liquid chromatography and liquid chromatography-tandem mass spectrometry. Anal Methods 2013; 5:5983-5989. [PMID: 35209698 DOI: 10.1039/c3ay40902c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
An acetonitrile-salt aqueous two-phase extraction system (ATPS) was developed and applied in the extraction of sulfonamides in blood. HPLC and HPLC-MS were applied in the determination of the analytes. 3 mL of blood sample was diluted with 1 mL pure water and 6 mL of acetonitrile and 1 g of K2HPO4 were added to the sample. The mixture was ultrasonically shaken for 5 min. The ATPS was formed. The hemoglobin in blood was gathered together and suspended between the acetonitrile and aqueous phases. The parameters affecting the extraction efficiency, such as type and volume of extraction solvent, type and amount of salt, pH value of sample solution, extraction time and the amount of dissolution solvent were investigated. The limits of detection for sulfamonomethoxine, sulfachlorpyridazine, sulfamethoxazole and sulfafurazole were 4.81, 1.87, 2.73, 2.17 μg L-1, respectively. When the present method was applied in the analysis of blood samples, the recoveries of the analytes ranged from 80.1 to 96.9% and the relative standard deviations were lower than 7.13%.
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Affiliation(s)
- Wei Yu
- Department of Hand Surgery, China-Japan Union Hospital, Jilin University, Xiantai Street 126, Changchun 130033, PR China
| | - Zhongling Liu
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Shiqian Gao
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Shusen Cui
- Department of Hand Surgery, China-Japan Union Hospital, Jilin University, Xiantai Street 126, Changchun 130033, PR China
| | - Xiao Yang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Wei Qiu
- Hepatobiliary and Pancreatic Surgery, The Bethune First Hospital, Jilin University, Xinmin Street No. 71, Changchun 130033, PR China
| | - Hanqi Zhang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Aimin Yu
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
| | - Yanfu Huan
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
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Huan Y, Feng G, Wang B, Ren Y, Fei Q. Quantitative analysis of cefalexin based on artificial neural networks combined with modified genetic algorithm using short near-infrared spectroscopy. Spectrochim Acta A Mol Biomol Spectrosc 2013; 109:308-312. [PMID: 23545436 DOI: 10.1016/j.saa.2013.02.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 02/04/2013] [Accepted: 02/20/2013] [Indexed: 06/02/2023]
Abstract
In this paper, a novel chemometric method was developed for rapid, accurate, and quantitative analysis of cefalexin in samples. The experiments were carried out by using the short near-infrared spectroscopy coupled with artificial neural networks. In order to enhancing the predictive ability of artificial neural networks model, a modified genetic algorithm was used to select fixed number of wavelength.
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Affiliation(s)
- Yanfu Huan
- College of Chemistry, Jilin University, Changchun 130021, China
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John CL, Huan Y, Wu X, Jin Y, Pierce DT, Zhao JX. A target-induced fluorescent nanoparticle for in situ monitoring of Zn(ii). Analyst 2013; 138:4950-7. [DOI: 10.1039/c3an00506b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
In this study silica nanoparticles (SiNPs) were covalently modified by the fluorescence ligand 2-((7-oxo-7H- furo [3, 2-g] chromen-9-yl) oxy)-N-(3-(triethoxysilyl) propyl) acetamide (CTPA) and provided an optical sensor allowing highly sensitive and selective detection for Au(3+). The probe exhibited a dynamic response range for Au(3+) from 5.0 × 10(-7) to 1.0 × 10(-4) M, with a detection limit of 2.3 × 10(-8) M. Other alkali, earth alkali and transition metal ions, even those that exist in high concentration, had no significant interference with Au(3+) determination.
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Affiliation(s)
- Zhiguang Song
- School of Chemistry, Jilin University, Changchun 130023, People's Republic of China
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Wang L, Chen J, Yao Q, Zhang J, Wang T, Wang H, Zhou X, Huan Y, Wang J. Neoadjuvant rh-endostatin, docetaxel, and epirubicin for breast cancer: Efficacy and safety in a prospective, randomized, phase II study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.1132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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39
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Sun D, Tian Y, Wang J, Shunming Z, Huan Y, Li W, Cao F. e0469 Multimodality imaging evaluation of functional and clinical benefits of percutaneous coronary intervension on patients with chronic total occlusion lesion. Heart 2010. [DOI: 10.1136/hrt.2010.208967.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
Novel carboxylate-modified fluorescent silica pH nanosensors were synthesized using a reverse microemulsion method with a pH sensitive squaraine dye used as pH indicator. This pH sensitive squaraine dye was simply doped inside SiNPs without any complicated procedures. To avoid aggregation among the particles and to increase the water solubility of the pH nanosensors, the SiNPs were surface modified with a carboxyl group. This pH probe exhibits a good linear dynamic response between pH 3.01 and 5.72. Many alkali, alkaline earth, and transitional metal ions including Li( + ), Na( + ), K( + ), Rb( + ), Cs( + ), Mg(2 + ), Ca(2 + ), Sr(2 + ), Al(3 + ), V(5 + ), Cr(3 + ), Cr(6 + ), Mn(2 + ), Fe(2 + ), Fe(3 + ), Co(2 + ), Ni(3 + ), Cu(2 + ), Zn(2 + ), As(3 + ), Se(4 + ), Mo(6 + ), Ag( + ), Cd(2 + ), La(3 + ), Er(3 + ), Ir(3 + ), Hg( + ), Hg(2 + ), and Pb(2 + ) had no significant interference on pH value determination. Artificial sample determination showed that the pH nanosensors developed in this work possess a very promising applicability in biological and biomedical fields.
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Affiliation(s)
- Lina Xue
- College of Chemistry, Jilin University, Changchun 130023, People's Republic of China
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Hu B, Peng X, Yang S, Gu H, Chen H, Huan Y, Zhang T, Qiao X. Fast quantitative detection of cocaine in beverages using nanoextractive electrospray ionization tandem mass spectrometry. J Am Soc Mass Spectrom 2010; 21:290-293. [PMID: 19939702 DOI: 10.1016/j.jasms.2009.10.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 10/16/2009] [Accepted: 10/20/2009] [Indexed: 05/28/2023]
Abstract
Without any sample pretreatment, effervescent beverage fluids were manually sprayed into the primary ion plume created by using a nanoelectrospray ionization source for direct ionization, and the analyte ions of interest were guided into an ion trap mass spectrometer for tandem mass analysis. Functional ingredients (e.g., vitamins, taurine, and caffeine, etc.) and spiked impurity (e.g., cocaine) in various beverages, such as Red Bull energy drink, Coco-cola, and Pepsi samples were rapidly identified within 1.5 s. The limit of detection was found to be 7-15 fg (S/N = 3) for cocaine in different samples using the characteristic fragment (m/z 150) observed in the MS(3) experiments. Typical relative standard deviation and recovery of this method were 6.9%-8.6% and 104%-108% for direct analysis of three actual samples, showing that nanoextractive electrospray ionization tandem mass spectrometry is a useful technique for fast screening cocaine presence in beverages.
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Affiliation(s)
- Bin Hu
- College of Chemistry, Biology, and Material Science, East China Institute of Technology, Fuzhou, China
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Zheng J, Xiao C, Fei Q, Li M, Wang B, Feng G, Yu H, Huan Y, Song Z. A highly sensitive and selective fluorescent Cu2+ sensor synthesized with silica nanoparticles. Nanotechnology 2010; 21:045501. [PMID: 20009178 DOI: 10.1088/0957-4484/21/4/045501] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A novel fluorescent nanosensor for the determination of Cu(2+) was synthesized with N-(quinoline-8-yl)-2-(3-triethoxysilyl-propylamino)-acetamide (QlOEt) grafted onto the surface of silica nanoparticles (SiNPs) using the reverse microemulsion method. Spherical SiNPs were used as substrate and QlOEt was used simultaneously as the binding and readout system for Cu(2+). This sensor has been realized as a highly sensitive and selective technique for the detection and quantification of trace amounts of Cu(2+). The probe exhibits a dynamic response range for Cu(2+) from 2.0 x 10(-6) to 2.0 x 10(-5) M, with a detection limit of 3.8 x 10(-7) M. Other alkali, alkaline earth, and transitional metal ions including Li(+), K(+), Mg(2+), Ca(2+), Sr(2+), Mn(2+), Zn(2+), Mo(6+), Pb(2+), Ag(+) had no significant interference on Cu(2+) determination. Poisonous and flammable reagents are avoided during the synthesis of this nanosensor. Therefore the strategy explored in this work can be extended to the synthesis of other chemo- and biosensors for direct detection of specific targets in an intracellular environment.
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Affiliation(s)
- Jiannan Zheng
- School of Chemistry, Jilin University, Changchun, People's Republic of China
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Luo M, Hu B, Zhang X, Peng D, Chen H, Zhang L, Huan Y. Extractive Electrospray Ionization Mass Spectrometry for Sensitive Detection of Uranyl Species in Natural Water Samples. Anal Chem 2009; 82:282-9. [DOI: 10.1021/ac9019494] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Mingbiao Luo
- Department of Applied Chemistry, East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Bin Hu
- Department of Applied Chemistry, East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Xie Zhang
- Department of Applied Chemistry, East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Daofeng Peng
- Department of Applied Chemistry, East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Huanwen Chen
- Department of Applied Chemistry, East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Lili Zhang
- Department of Applied Chemistry, East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Yanfu Huan
- Department of Applied Chemistry, East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
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Fei Q, Xiao D, Zhang Z, Huan Y, Feng G. A novel silica-coated multiwall carbon nanotube with CdTe quantum dots nanocomposite. Spectrochim Acta A Mol Biomol Spectrosc 2009; 74:597-601. [PMID: 19660982 DOI: 10.1016/j.saa.2009.06.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2008] [Revised: 06/22/2009] [Accepted: 06/30/2009] [Indexed: 05/28/2023]
Abstract
A novel silica-coated multiwall carbon nanotube (MWNTs) with CdTe quantum dots nanocomposite was synthesized in this paper. Here, we show the in situ growth of crystalline CdTe quantum dots on the surfaces of oxidized MWNTs. The approach proposed herein differs from previous attempts to synthesize nanotube assemblies in that we mix the oxidized MWNTs into CdCl(2) solution of CdTe nanocrystals synthesized in aqueous solution. Reinforced the QD-MWNTs heterostructures with silica coating, this method is not invasive and does not introduce defects to the structure of carbon nanotubes (CNTs), and it ensures high stability in a range of organic solvents. Furthermore, a narrow SiO(2) layer on the MWNT-CdTe heterostructures can eliminate the biological toxicity of quantum dots and carbon nanotubes. This is not only a breakthrough in the synthesis of one-dimensional nanostructures, but also taking new elements into bio-nanotechnology.
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Affiliation(s)
- Qiang Fei
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
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Yang S, Han J, Huan Y, Cui Y, Zhang X, Chen H, Gu H. Desorption Electrospray Ionization Tandem Mass Spectrometry for Detection of 24 Carcinogenic Aromatic Amines in Textiles. Anal Chem 2009. [DOI: 10.1021/ac900411r] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Shuiping Yang
- East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Jing Han
- East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Yanfu Huan
- East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Yanjuan Cui
- East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Xie Zhang
- East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Huanwen Chen
- East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
| | - Haiwei Gu
- East China Institute of Technology, Fuzhou, Jiangxi Province 344000, P. R. China, and College of Chemistry, Jilin University, Changchun, Jilin Province 130021, P. R. China
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Chen H, Hu B, Hu Y, Huan Y, Zhou Z, Qiao X. Neutral desorption using a sealed enclosure to sample explosives on human skin for rapid detection by EESI-MS. J Am Soc Mass Spectrom 2009; 20:719-722. [PMID: 19196523 DOI: 10.1016/j.jasms.2008.12.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 12/14/2008] [Accepted: 12/15/2008] [Indexed: 05/27/2023]
Abstract
A novel air-tight neutral desorption enclosure has been fabricated to noninvasively sample low picograms of explosives 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetraazocine (HMX), triacetone triperoxide (TATP), and nitroglycerin (NG) from human skin using a neutral nitrogen gas beam. Without further sample pretreatment, the explosive mixtures collected from the skin surface were directly transported by a nitrogen carrier gas over a 4-m distance for sensitive detection and rapid identification by extractive electrospray ionization tandem mass spectrometry.
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Affiliation(s)
- Huanwen Chen
- College of Chemistry, Biology, and Material Science, East China Institute of Technology, Fuzhou, PR China.
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Chen H, Liang H, Ding J, Lai J, Huan Y, Qiao X. Rapid differentiation of tea products by surface desorption atmospheric pressure chemical ionization mass spectrometry. J Agric Food Chem 2007; 55:10093-10100. [PMID: 18020412 DOI: 10.1021/jf0720234] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Protonated water molecules generated by an ambient corona discharge were directed to impact tea leaves for desorption/ionization at atmospheric pressure. Thus, a novel method based on surface desorption chemical ionization mass spectrometry (DAPCI-MS) has been developed for rapid analysis of tea products without any sample pretreatment. Under the optimized experimental conditions, DAPCI MS spectra of various tea samples are recorded rapidly, and the resulting mass spectra are chemical fingerprints that characterize the tea samples. On the basis of the mass spectral fingerprints, 40 tea samples including green tea, oolong tea, and jasmine tea were successfully differentiated by principal component analysis (PCA) of the mass spectral raw data. The PCA results were also validated with cluster analysis and supervised PCA analysis. The alteration of signal intensity caused by rough surfaces of tea leaves did not cause failure in the separation of the tea products. The experimental findings show that DAPCI-MS creates ions of both volatile and nonvolatile compounds in tea products at atmospheric pressure, providing a practical and convenient tool for high-throughput differentiation of tea products.
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Affiliation(s)
- Huanwen Chen
- Applied Chemistry Department, East China Institute of Technology, Fuzhou, China.
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Ren J, Huan Y, Wang H, Chang YJ, Zhao HT, Ge YL, Liu Y, Yang Y. Dynamic contrast-enhanced MRI of benign prostatic hyperplasia and prostatic carcinoma: correlation with angiogenesis. Clin Radiol 2007; 63:153-9. [PMID: 18194690 DOI: 10.1016/j.crad.2007.07.023] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 07/19/2007] [Accepted: 07/25/2007] [Indexed: 10/22/2022]
Abstract
AIM To investigate the diagnostic and differential diagnostic values of dynamic contrast-enhanced magnetic resonance imaging (DCE MRI) in prostatic diseases, and to investigate the correlation between the parameters of SI-T curves and angiogenesis. MATERIALS AND METHODS Twenty-one patients with proven prostatic carcinoma (Pca) and 29 patients with proven benign prostatic hyperplasia (BPH) were examined using DCE MRI. Diagnostic characteristics for differentiation were examined using threshold values for maximum peak time, enhancement degree, and enhancement rate. Then, the signal intensity-time curves (SI-T curves) were analysed, and the correlations between the parameters of SI-T curves and the expression levels of vascular endothelial growth factor (VEGF) and microvascular density (MVD) were investigated. All patents underwent prostatectomy. DCE MRI and histological findings were correlated. RESULTS Pca showed stronger enhancement with an earlier peak time, higher enhancement, and enhancement rate (p<0.05). Regarding the type of SI-T curves, in the BPH group six were type A, 10 were type B, and 13 were type C, whereas in the Pca group, 14 were type A, six were type B, and only one was type C (Chi-square test, chi2=13.57, P<0.005). The VEGF and MVD expression levels of Pca were higher than those of BPH. Peak time was negatively correlated with the expression levels of VEGF and MVD, whereas the enhancement degree and enhancement rate showed positive correlations (Pearson correlation, p<0.05). CONCLUSION Based on T2-weighted imaging, DCE MRI curves can help to differentiate benign from malignant prostate tissue. In the present study the type C curve was rarely seen with malignant disease, but these results need confirmation.
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Affiliation(s)
- J Ren
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
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Abstract
Multiple eccrine spiradenoma is one of the rarest tumours of the sweat gland. We report a case of multiple eccrine spiradenoma that was distributed in several parts of the body. On MRI the lesions presented with multiple dispersive foci with clear circumferences in the cutis and the subcutaneous tissue. The lesions showed low signal intensity on T1 weighted images, and high signal intensity on short tau inversion recovery images. Although the signal intensities of the lesions were not characteristic in this patient, multiple eccrine spiradenoma should be included in the differential diagnosis of the lesions in the cutis and the subcutaneous tissue.
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Affiliation(s)
- Y-D Han
- Han, Department of Radiology, Xijing Hospital, Xi'an, 710032, PR China.
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van der Zee S, Thompson A, Zimmerman R, Lin J, Huan Y, Braskett M, Sciacca RR, Landry DW, Oliver JA. Vasopressin administration facilitates fluid removal during hemodialysis. Kidney Int 2007; 71:318-24. [PMID: 17003815 DOI: 10.1038/sj.ki.5001885] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Inadequate secretion of vasopressin during fluid removal by hemodialysis may contribute to the cardiovascular instability that complicates this therapy and administration of exogenous hormone, by supporting arterial pressure, may facilitate volume removal. To test this, we measured plasma vasopressin in patients with end-stage renal disease (ESRD) during hemodialysis and found that despite significant fluid removal, plasma vasopressin concentration did not increase. We further found that ESRD did not alter the endogenous removal rate of plasma vasopressin and that plasma hormone is not dialyzed. Finally, in a randomized, double-blinded, placebo-controlled trial in 22 hypertensive patients, we examined the effect of a constant infusion of a non-pressor dose of vasopressin on the arterial pressure response during a hemodialysis in which the target fluid loss was increased by 0.5 kg over the baseline prescription. We found that arterial pressure was more stable in the patients receiving vasopressin and that while only one patient (9%) in the vasopressin group had a symptomatic hypotensive episode, 64% of the patients receiving placebo had such an episode (P=0.024). Moreover, increased fluid removal was achieved only in the vasopressin group (520+/-90 ml vs 64+/-130 ml, P=0.01). Thus, administration of non-pressor doses of vasopressin to hypertensive subjects improves cardiovascular stability during hemodialysis and allows increased removal of excess extracellular fluid. Inadequate vasopressin secretion during hemodialysis-induced fluid removal is a likely contributor to the intradialytic hypotension that limits fluid removal.
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Affiliation(s)
- S van der Zee
- Department of Medicine, Columbia University, New York, New York 10032, USA
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