1
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Sunon P, Ngokpho B, Kaewket K, Wannapaiboon S, Ngamchuea K. Copper(II) phthalocyanine as an electrocatalytic electrode for cathodic detection of urinary tryptophan. Analyst 2024; 149:3041-3051. [PMID: 38625079 DOI: 10.1039/d4an00418c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Herein, we introduce a novel method for tryptophan detection via a reduction reaction facilitated by its interaction with a copper(II) phthalocyanine (CuPc) electrocatalytic electrode. This method addresses challenges associated with the susceptibility of the oxidation response to interference from various species when measuring tryptophan in bodily fluids. The reduction currents exhibit a linear increase with tryptophan concentrations in two ranges: 0.0013-0.10 mM and 0.10-1.20 mM, with the sensitivities of 14.7 ± 0.5 μA mM-1 and 3.5 ± 0.1 μA mM-1, respectively. The limit of detection (LOD, 3SB/m) is determined to be 0.39 μM. The sensor exhibits excellent reproducibility, with the relative standard deviation of <5%. Application of the sensor to authentic urine samples yields a % recovery of 101 ± 4%.
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Affiliation(s)
- Pachanuporn Sunon
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
- Institute of Research and Development, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Busarakham Ngokpho
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
| | - Keerakit Kaewket
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
| | - Suttipong Wannapaiboon
- Synchrotron Light Research Institute, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Kamonwad Ngamchuea
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Avenue, Suranaree, Muang, Nakhon Ratchasima 30000, Thailand.
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2
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Khaleque M, Bacchu M, Ali M, Hossain M, Mamun M, Hossain M, Khan M. Copper oxide nanoflowers/poly-l-glutamic acid modified advanced electrochemical sensor for selective detection of l-tryptophan in real samples. Heliyon 2023; 9:e16627. [PMID: 37292289 PMCID: PMC10245068 DOI: 10.1016/j.heliyon.2023.e16627] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 05/10/2023] [Accepted: 05/22/2023] [Indexed: 06/10/2023] Open
Abstract
The main objective of this research work is to develop a low-cost sensor to detect l-tryptophan (L-tryp) in real sample medium based on a modified glassy carbon electrode. For this, copper oxide nanoflowers (CuONFs) and poly-l-glutamic acid (PGA) were used to modify GCE. The prepared NFs and PGA coated electrode was characterized using field emission scanning electron microscope (FE-SEM) with energy dispersive X-ray (EDX) and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. Furthermore, the electrochemical activity was performed by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). The modified electrode showed excellent electro-catalytic activity towards L-tryp detection in PBS solution at neutral pH 7.0. Based on the physiological pH condition, the proposed electrochemical sensor can detect L-tryp concentration with a linear range of 1.0 × 10-4-8.0 × 10-8 molL-1 with having a detection limit of 5.0 × 10-8 molL-1 and sensitivity of 0.6μA/μMcm2. The selectivity of L-tryp was tested with a mixture of salt and uric acid solution at the above conditions. Finally, this strategy demonstrated excellent recovery value in real sample analysis like milk and urine.
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Affiliation(s)
- M.A. Khaleque
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M.S. Bacchu
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M.R. Ali
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M.S. Hossain
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M.R.A. Mamun
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M.I. Hossain
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - M.Z.H. Khan
- Dept. of Chemical Engineering, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology, Jashore, 7408, Bangladesh
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3
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Zhu K, Xu X, Yan B. Ratio Fluorescent Detecting of Tryptophan and Its Metabolite 5-Hydroxyindole-3-acetic Acid Relevant with Depression via Tb(III) Modified HOFs Hybrids: Further Designing Recyclable Molecular Logic Gate Connected by Back Propagation Neural Network. Adv Healthc Mater 2023:e2203292. [PMID: 36772882 DOI: 10.1002/adhm.202203292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/26/2023] [Indexed: 02/12/2023]
Abstract
Exploring intelligent fluorescent materials with high reliability and precision to diagnose diseases is significant but remains a great challenge. Herein, based on coordination post-synthetic modification, a Tb3+ functionalized ME-PA (Tb@1) is prepared, which can emit brilliant green fluorescence through ligand-to-mental charge transfer-assisted energy transfer (LMCT-ET) process from ME-PA to Tb3+ ions. Tb@1 can simultaneously distinguish Tryptophan (Try) and its metabolite 5-hydroxyindole-3-acetic acid (5-HIAA), two effective indicators for depression, in ratio and colorimetric mode. And this sensor behaves the advantages of high efficiency and sensitivity, as well as excellent reusability and anti-interference. The PET process from ME to Try and 5-HIAA, and the competitive absorption between analytes and Tb@1 may be relevant to sensing mechanism. In realistic serum or urine environment, the detection limits of Tb@1 for Try and 5-HIAA are 0.0183 and 0.0149 mg L-1 respectively. Moreover, in conjunction with back propagation neural network (BPNN), two dual-output molecular logic gates that can be calculated circularly are further designed, which realizes intelligent control of the electronic component to identify the existence of two biomarkers and judge their concentrations from fluorescence images. This work offers a novel approach to modulate logic circuits based on ML-assisted HOF fluorescent sensor, with promising application for a precise and pictorial depression diagnosis.
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Affiliation(s)
- Kai Zhu
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Xin Xu
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Bing Yan
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
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4
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Khan ZA, Hong PJS, Lee CH, Hong Y. Recent Advances in Electrochemical and Optical Sensors for Detecting Tryptophan and Melatonin. Int J Nanomedicine 2021; 16:6861-6888. [PMID: 34675512 PMCID: PMC8521600 DOI: 10.2147/ijn.s325099] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022] Open
Abstract
Tryptophan and melatonin are pleiotropic molecules, each capable of influencing several cellular, biochemical, and physiological responses. Therefore, sensitive detection of tryptophan and melatonin in pharmaceutical and human samples is crucial for human well-being. Mass spectrometry, high-performance liquid chromatography, and capillary electrophoresis are common methods for both tryptophan and melatonin analysis; however, these methods require copious amounts of time, money, and manpower. Novel electrochemical and optical detection tools have been subjects of intensive research due to their ability to offer a better signal-to-noise ratio, high specificity, ultra-sensitivity, and wide dynamic range. Recently, researchers have designed sensitive and selective electrochemical and optical platforms by using new surface modifications, microfabrication techniques, and the decoration of diverse nanomaterials with unique properties for the detection of tryptophan and melatonin. However, there is a scarcity of review articles addressing the recent developments in the electrochemical and optical detection of tryptophan and melatonin. Here, we provide a critical and objective review of high-sensitivity tryptophan and melatonin sensors that have been developed over the past six years (2015 onwards). We review the principles, performance, and limitations of these sensors. We also address critical aspects of sensitivity and selectivity, limit and range of detection, fabrication process and time, durability, and biocompatibility. Finally, we discuss challenges related to tryptophan and melatonin detection and present future outlooks.
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Affiliation(s)
- Zeeshan Ahmad Khan
- Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Ubiquitous Healthcare & Anti-Aging Research Center (u-HARC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
| | - Paul Jung-Soo Hong
- Department of Chemistry, Newton South High School, Newton, MA, 02459, USA
| | - Christina Hayoung Lee
- Department of Biology, College of Arts and Sciences, Vanderbilt University, Nashville, TN, 37212, USA
| | - Yonggeun Hong
- Department of Physical Therapy, College of Healthcare Medical Science & Engineering, Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Biohealth Products Research Center (BPRC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Ubiquitous Healthcare & Anti-Aging Research Center (u-HARC), Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Department of Rehabilitation Science, Graduate School of Inje University, Gimhae, Gyeong-nam, 50834, Korea
- Department of Medicine, Division of Hematology/Oncology, Harvard Medical School-Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
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5
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Validation of a Simple HPLC-Based Method for Lysine Quantification for Ruminant Nutrition. Molecules 2021; 26:molecules26144173. [PMID: 34299448 PMCID: PMC8304843 DOI: 10.3390/molecules26144173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022] Open
Abstract
Robust and selective quantification methods are required to better analyze feed supplementation effectiveness with specific amino acids. In this work, a reversed-phase high-performance liquid chromatography method with fluorescence detection is proposed and validated for lysine quantification, one of the most limiting amino acids in ruminant nutrition and essential towards milk production. To assess and widen method applicability, different matrices were considered: namely Li2CO3 buffer (the chosen standard reaction buffer), phosphate buffer solution (to mimic media in cellular studies), and rumen inoculum. The method was validated for all three matrices and found to be selective, accurate (92% ± 2%), and precise at both the inter- and intra-day levels in concentrations up to 225 µM, with detection and quantification limits lower than 1.24 and 4.14 µM, respectively. Sample stability was evaluated when stored at room temperature, 4 °C, and -20 °C, showing consistency for up to 48 h regardless of the matrix. Finally, the developed method was applied in the quantification of lysine on real samples. The results presented indicate that the proposed method can be applied towards free lysine quantification in ruminant feeding studies and potentially be of great benefit to dairy cow nutrition supplementation and optimization.
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6
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A cost-saving preparation of nickel nanoparticles/nitrogen-carbon nanohybrid as effective advanced electrode materials for highly sensitive tryptophan sensor. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105744] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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7
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Nie X, Zhang R, Tang Z, Wang H, Deng P, Tang Y. Sensitive and selective determination of tryptophan using a glassy carbon electrode modified with nano-CeO2/reduced graphene oxide composite. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105367] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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8
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Albuquerque J, Casal S, Páscoa RNMDJ, Van Dorpe I, Fonseca AJM, Cabrita ARJ, Neves AR, Reis S. Applying nanotechnology to increase the rumen protection of amino acids in dairy cows. Sci Rep 2020; 10:6830. [PMID: 32321963 PMCID: PMC7176649 DOI: 10.1038/s41598-020-63793-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 04/01/2020] [Indexed: 12/11/2022] Open
Abstract
The amino acid requirements of high-production dairy cows represent a challenge to ensuring that their diet is supplied with available dietary resources, and thus supplementation with protected amino acids is necessary to increase their post-ruminal supply. Lysine is often the most limiting amino acid in corn-based diets. The present study proposes the use of lipid nanoparticles as novel rumen-bypass systems and assesses their capability to carry lysine. Solid lipid nanoparticles, nanostructured lipid carriers and multiple lipid nanoparticles were considered and their resistance in a rumen inoculum collected from fistulated cows was assessed. All nanoparticles presented diameters between 200-500 nm and surface charges lower than -30 mV. Lysine encapsulation was achieved in all nanoparticles, and its efficiency ranged from 40 to 90%. Solid lipid nanoparticles composed of arachidic or stearic acids and Tween 60 resisted ruminal digestion for up to 24 h. The nanoparticles were also proven to protect their lysine content from the ruminal microbiota. Based on our findings, the proposed nanoparticles represent promising candidates for rumen-bypass approaches and should be studied further to help improve the current technologies and overcome their limitations.
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Affiliation(s)
- João Albuquerque
- LAQV, REQUIMTE, Department of Chemical Sciences, FFUP, Rua Jorge Viterbo Ferreira n° 228, 4050-313, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (UP), Rua Jorge Viterbo Ferreira n° 228, 4050-313, Porto, Portugal
| | - Susana Casal
- LAQV, REQUIMTE, Department of Chemical Sciences, FFUP, Rua Jorge Viterbo Ferreira n° 228, 4050-313, Porto, Portugal
| | | | - Ingrid Van Dorpe
- PREMIX-Especialidades Agrícolas e Pecuárias. Lda, Parque Indústrial II - Neiva, 4935-232, Viana do Castelo, Portugal
| | | | | | - Ana Rute Neves
- LAQV, REQUIMTE, Department of Chemical Sciences, FFUP, Rua Jorge Viterbo Ferreira n° 228, 4050-313, Porto, Portugal.,CQM - Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9020-105, Funchal, Portugal
| | - Salette Reis
- LAQV, REQUIMTE, Department of Chemical Sciences, FFUP, Rua Jorge Viterbo Ferreira n° 228, 4050-313, Porto, Portugal
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9
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Li L, Wang Y, Chen G, Dong K, Song H. Pre-column derivatization method for determining phenylephrine in human plasma and its application in a pharmacokinetic study. Biomed Chromatogr 2020; 34:e4843. [PMID: 32267540 DOI: 10.1002/bmc.4843] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 03/20/2020] [Accepted: 04/02/2020] [Indexed: 11/08/2022]
Abstract
In the present study, a rapid derivatization liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated to evaluate phenylephrine in human plasma. The plasma samples were processed to precipitate the proteins, followed by derivatization of the phenylephrine in the plasma with dansyl-chloride solution and extraction with methyl tert-butyl ether-n-hexane (2:1, v/v). The treated samples were analyzed on a Gemini C18 column with 3 min gradient elution, and sensitive detection was achieved with a Waters TQ-s. The method gave linear results over a concentration range from 0.020 to 10.0 ng/ml. The lower limit of quantification was 0.020 ng/ml. Intra- and inter-day precision was <15%, and accuracy was 95.0-105.3%. The validated LC-MS/MS method was successfully applied in the pharmacokinetic analysis of phenylephrine in Chinese subjects with common cold after a single-dose administration of 5, 10 or 20 mg phenylephrine. This pre-column derivatization method may also be applied for the analysis of endogenous hormones such as norepinephrine and adrenaline in a biological matrix.
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Affiliation(s)
- Li Li
- Institute of Lifeomics, Academy of Military Medical Science, Military Academy of Sciences, Beijing, China.,Beijing United-Power Pharma Tech Co.Ltd, Beijing, China
| | - Yong Wang
- China Resources Sanjiu Medical and Pharmaceutical Co.Ltd, Shenzhen, China
| | - Guanglei Chen
- China Resources Sanjiu Medical and Pharmaceutical Co.Ltd, Shenzhen, China
| | - Kelly Dong
- Beijing United-Power Pharma Tech Co.Ltd, Beijing, China
| | - Haifeng Song
- Institute of Lifeomics, Academy of Military Medical Science, Military Academy of Sciences, Beijing, China
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10
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Gültekin A, Ünüvar A, Karanfil G, Yilmaz I, Say R. Development of molecularly ımprınted polymer based quartz crystal mıcrobalance nanosensor for the determınatıon of tryptophan. Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1746313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Aytaç Gültekin
- Faculty of Engineering, Department of Energy Systems Engineering, Karamanoğlu Mehmetbey University, Karaman, Turkey
| | | | - Gamze Karanfil
- Faculty of Engineering, Department of Energy Systems Engineering, Karamanoğlu Mehmetbey University, Karaman, Turkey
| | - Ibrahim Yilmaz
- Department of Chemistry, Kamil Özdağ Science Faculty, Karamanoğlu Mehmetbey University, Karaman, Turkey
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11
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Electrochemical Sensor for Rapid and Sensitive Detection of Tryptophan by a Cu 2O Nanoparticles-Coated Reduced Graphene Oxide Nanocomposite. Biomolecules 2019; 9:biom9050176. [PMID: 31072043 PMCID: PMC6571681 DOI: 10.3390/biom9050176] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/21/2019] [Accepted: 05/08/2019] [Indexed: 02/05/2023] Open
Abstract
In this paper, a nanocomposite of cuprous oxide and electrochemically reduced graphene oxide (Cu2O–ERGO) was prepared by a simple and low-cost method; hereby, a new method for the electrochemical determination of tryptophan (Trp) by this composite modified glassy carbon electrode (GCE) is proposed. The prepared materials and modified electrodes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and cyclic voltammetry (CV). The results showed that Cu2O–ERGO/GCE had good electrocatalytic activity for Trp. The effects of supporting electrolyte, scanning rate, accumulation potential, and accumulation time on the determination of Trp were studied. Under the optimum experimental conditions, Trp was quantitatively analyzed by square-wave voltammetry (SWV). The oxidation peak current of Trp had a good linear relationship with its concentration in the range of 0.02–20 μM, and the detection limit was 0.01 μM (S/N = 3). In addition, the modified electrode has high sensitivity, good repeatability, and long-term stability. Finally, the proposed method has been successfully applied in the determination of Trp concentration in practical samples.
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12
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Locatelli A, Iommarini L, Graziadio A, Leoni A, Porcelli AM, Iotti S, Malucelli E, Francia F, Venturoli G, Farruggia G. Dansyl acetyl trehalose: a novel tool to investigate the cellular fate of trehalose. RSC Adv 2019; 9:15350-15356. [PMID: 35514834 PMCID: PMC9064201 DOI: 10.1039/c9ra01800j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 04/19/2019] [Indexed: 01/17/2023] Open
Abstract
A fluorescent derivative of trehalose with two dansyl groups (DAT) has been synthesized. It is characterised by a large Stokes shift, good permeability in human living cells and a well detectable fluorescent signal within the cells. Notably, in intestinal cells DAT is sequestered in vesicles induced by trehalose pre-treatment and colocalizes with lipid droplets. Dansylated trehalose: a fluorescent dye to monitor trehalose cellular uptake.![]()
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Affiliation(s)
- Alessandra Locatelli
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
| | - Luisa Iommarini
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
| | - Alessandra Graziadio
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
| | - Alberto Leoni
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
| | - Anna Maria Porcelli
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
- Centro Interdipartimentale di Ricerca Industriale (CIRI) Scienze della Vita e Tecnologie per la Salute
| | - Stefano Iotti
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
- National Institute of Biostructures and Biosystems
| | - Emil Malucelli
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
| | - Francesco Francia
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
| | - Giovanni Venturoli
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
| | - Giovanna Farruggia
- Dipartimento di Farmacia e Biotecnologie (FABIT)
- Università degli Studi di Bologna
- Bologna
- Italy
- National Institute of Biostructures and Biosystems
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13
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Novel, efficient, facile, and comprehensive protocol for post-column amino acid analysis of icatibant acetate containing natural and unnatural amino acids using the QbD approach. Amino Acids 2018; 51:295-309. [DOI: 10.1007/s00726-018-2665-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 10/10/2018] [Indexed: 02/06/2023]
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14
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Liu X, Zhang J, Di J, Long Y, Li W, Tu Y. Graphene-like carbon nitride nanosheet as a novel sensing platform for electrochemical determination of tryptophan. J Colloid Interface Sci 2017; 505:964-972. [DOI: 10.1016/j.jcis.2017.05.119] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/29/2017] [Accepted: 05/31/2017] [Indexed: 10/19/2022]
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15
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Alizadeh T, Amjadi S. A tryptophan assay based on the glassy carbon electrode modified with a nano-sized tryptophan-imprinted polymer and multi-walled carbon nanotubes. NEW J CHEM 2017. [DOI: 10.1039/c6nj04108f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new nanostructured molecularly imprinted polymer (nano-MIP), possessing tryptophan compatible cavities, was synthesized using 1-(allyloxy)-4-nitrobenzene as an innovative functional monomer.
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Affiliation(s)
- Taher Alizadeh
- Department of Analytical Chemistry
- Faculty of Chemistry
- University College of Science
- University of Tehran
- Tehran
| | - Somayeh Amjadi
- Department of Applied Chemistry
- Faculty of Science
- University of Mohaghegh Ardabili
- Ardabil
- Iran
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16
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Teng Z, Lv H, Zhang Y, Zhang Y, Guan J, Chengyin W. Development of a Fluorescent Labeling Reagent for Determination of Proline and Hydroxyproline in Myeloma Patient Plasma by HPLC-FLD. J Chromatogr Sci 2016; 54:1743-1751. [PMID: 27601044 DOI: 10.1093/chromsci/bmw132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 05/30/2016] [Indexed: 11/13/2022]
Abstract
A fluorescent derivatization reagent, 3,6-dimethoxy-9-phenyl-9H-carbazole-1-sulfonyl chloride (DPCS-Cl), previously designed, synthesized and developed for amino acids labeling, is here employed. It was used as a pre-column derivatization reagent for the determination of proline (Pro) and hydroxyproline (Hyp) with high-performance liquid chromatography. Both of the analytes were labeled with DPCS-Cl at 60°C for 30 min. The optimized concentration of DPCS-Cl was 25 µg mL-1 and the molar ratio of analytes to DPCS-Cl was 1:6. Excitation wavelength of 318 nm and emission wavelength of 440 nm were selected for the fluorescence detection. For Pro and Hyp, the linear correlation coefficients were all >0.999; the linear ranges of calibration curve were all 5.0 nmol L-1 to 5.0 μmol L-1; the detection limits were 20.0 and 10.0 fmol, respectively; the intra-day and inter-day relative standard deviations were 2.6-3.3% and 3.5-4.6%, respectively. This reagent was applied to the determination of Pro and Hyp in plasma of myeloma patients with its merits of high efficiency of derivatization, stability of the derivatives and high sensitivity.
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Affiliation(s)
- Zhenyuan Teng
- College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, Yangzhou 225002, China
| | - Hongying Lv
- College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, Yangzhou 225002, China
| | - Yaoyao Zhang
- College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, Yangzhou 225002, China
| | - Yi Zhang
- College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, Yangzhou 225002, China
| | - Jun Guan
- Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu province, Yangzhou 225002, China
| | - Wang Chengyin
- College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, Yangzhou 225002, China
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17
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Detection of four different amino acid neurotransmitters in cultured rat neurons and the culture medium by precolumn derivatization high-performance liquid chromatography. Neuroreport 2016; 27:495-500. [DOI: 10.1097/wnr.0000000000000568] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Quantitative analysis of drugs in biological matrices by HPLC hyphenated to fluorescence detection. Bioanalysis 2016; 7:743-62. [PMID: 25871590 DOI: 10.4155/bio.15.20] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
An overview of the state-of-the art in HPLC coupled with fluorescence detection is presented. Over the last 20 years, the increasing number of methodological papers on this topic (4082 between 1994 and 2004 and 7725 between 2004 and 2014) is testament to its utility in bioanalytical applications. Compared with conventional UV absorbance detection used in HPLC, fluorescence detection can greatly enhance the sensitivity leading to limits of detection similar to those obtained with mass spectrometry, offering researchers a sensitive, robust and relatively inexpensive instrumental method. This work will focus on the analysis of pharmaceutical compounds in different biological matrices, either naturally fluorescent or derivatized with a fluorescent agent, and some of them chiral. Therapeutic applications, sample preparation and derivatization, sensitivity for each example are described.
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19
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Russ M, Hauser S, Wintersteiger R, Greilberger J, Andrä M, Ortner A. Determination of Angiotensin-(1-7) with HPLC/Fluorescence-Detection. J Fluoresc 2015; 26:81-6. [PMID: 26452351 DOI: 10.1007/s10895-015-1686-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 09/28/2015] [Indexed: 12/01/2022]
Abstract
Angiotensin-(1-7) is an important active component in the renin-angiotensin-system. Due to its cardio protective effects it is now under investigation in combination with antioxidants as a reperfusion solution. The combination showed impressive effects on isolated hearts of male Wistar rats after induced ischemia. In this work a high performance liquid chromatography method with fluorescence detection was developed for the first time for in-process measurements as well as for stability tests of the peptide in the novel antioxidant-containing Karal® solution. For fluorescence detection of angiotensin-(1-7) fluorescamine as derivatization dye was applied. Under optimized conditions the method showed linearity over the range of 50 to 5000 ng/mL with R(2) of 0.9988 and an overall precision better than 5.0 %. LOD and LOQ were determined to be in the femtomol range on column. It was found that stability of angiotensin-(1-7) could be significantly improved in the antioxidant containing preparation compared to aqueous solutions.
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Affiliation(s)
- Miriam Russ
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, 8010, Graz, Austria
| | - Susanne Hauser
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, 8010, Graz, Austria
| | - Reinhold Wintersteiger
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, 8010, Graz, Austria
| | - Joachim Greilberger
- Institute of Physiological Chemistry, Medical University Graz, Harrachgasse 21, 8010, Graz, Austria
| | - Michaela Andrä
- Division of Transplantation Surgery, Medical University Graz, Auenbruggerplatz 29, 8036, Graz, Austria
| | - Astrid Ortner
- Institute of Pharmaceutical Sciences, Department of Pharmaceutical Chemistry, University of Graz, Schubertstraße 1, 8010, Graz, Austria.
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20
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Liao FY, Lin YC, Chen YL, Feng CH. Determination of tranexamic acid in various matrices using microwave-assisted derivatization followed by dispersive liquid–liquid microextraction. J Chromatogr A 2015; 1377:35-45. [DOI: 10.1016/j.chroma.2014.12.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/13/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
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21
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Green synthesis of silver nanoparticles–graphene oxide nanocomposite and its application in electrochemical sensing oftryptophan. Biosens Bioelectron 2013. [DOI: 10.1016/j.bios.2012.10.029] [Citation(s) in RCA: 141] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Sun Y, Xu X, Mou Z, Wang J, Tan Z, Wu S. Analysis of free amino acids in Amur sturgeon by ultra-performance liquid chromatography using pre-column derivatization with 6-aminoquinolyl-carbamyl. J Sep Sci 2012; 35:3421-6. [DOI: 10.1002/jssc.201200733] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 08/24/2012] [Accepted: 08/27/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Yanchun Sun
- College of Science; Harbin Institute of Technology; Harbin China
- Heilongjiang River Research Institute; Chinese Academy of Fishery Sciences; Harbin China
| | - Xianzhu Xu
- College of Science; Harbin Institute of Technology; Harbin China
| | - Zhenbo Mou
- Heilongjiang River Research Institute; Chinese Academy of Fishery Sciences; Harbin China
| | - Jing Wang
- Hospital of Harbin University of Science and Technology; Harbin China
| | - Zhijun Tan
- Yellow Sea Fisheries Research Institute; Chinese Academy of Fishery Sciences; Qingdao China
| | - Song Wu
- Heilongjiang River Research Institute; Chinese Academy of Fishery Sciences; Harbin China
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