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Kumar H, Duhan J, Obrai S. Highly Sensitive and Selective Fluorescence and Smartphone-Based Sensor for Detection of Rutin Using Boron Nitrogen Co-doped Graphene Quantum Dots. J Fluoresc 2024:10.1007/s10895-024-03823-5. [PMID: 38995477 DOI: 10.1007/s10895-024-03823-5] [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: 05/07/2024] [Accepted: 06/24/2024] [Indexed: 07/13/2024]
Abstract
This research explores the fluorescence properties and photostability of boron nitrogen co-doped graphene quantum dots (BN-GQDs), evaluating their effectiveness as sensors for rutin (RU). BN-GQDs are biocompatible and exhibit notable absorbance and fluorescence characteristics, making them suitable for sensing applications. The study utilized various analytical techniques to investigate the chemical composition, structure, morphology, optical attributes, elemental composition, and particle size of BN-GQDs. Techniques included X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The average particle size of the BN-GQDs was determined to be approximately 3.5 ± 0.3 nm. A clear correlation between the emission intensity ratio and RU concentration was identified across the range of 0.42 to 4.1 μM, featuring an impressively low detection limit (LOD) of 1.23 nM. The application of BN-GQDs as fluorescent probes has facilitated the development of a highly sensitive and selective RU detection method based on Förster resonance energy transfer (FRET) principles. This technique leverages emission at 465 nm. Density Functional Theory (DFT) analyses confirm that FRET is the primary mechanism behind fluorescence quenching, as indicated by the energy levels of the lowest unoccupied molecular orbitals (LUMOs) of BN-GQDs and RU. The method's effectiveness has been validated by measuring RU concentrations in human serum samples, showing a recovery range between 97.8% and 103.31%. Additionally, a smartphone-based detection method utilizing BN-GQDs has been successfully implemented, achieving a detection limit (LOD) of 49 nM.
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Affiliation(s)
- Himanshu Kumar
- Department of Chemistry, Dr. B R Ambedkar National Institute of Technology Jalandhar, Jalandhar, Punjab, 144011, India
| | - Jyoti Duhan
- Department of Chemistry, Dr. B R Ambedkar National Institute of Technology Jalandhar, Jalandhar, Punjab, 144011, India
| | - Sangeeta Obrai
- Department of Chemistry, Dr. B R Ambedkar National Institute of Technology Jalandhar, Jalandhar, Punjab, 144011, India.
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Mahmoud AM, Alqahtani YS, El-Wekil MM, Bellah H Ali AM. Dual modulation of blue-fluorescent carbon dots for simultaneous detection of topotecan and pantoprazole. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3287-3296. [PMID: 38738631 DOI: 10.1039/d4ay00394b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
This study introduces a novel approach for the simultaneous determination of topotecan (TOP) and pantoprazole (PNT), two drugs whose interaction is critical in clinical applications. The significance of this study originates from the need to understand the pharmacokinetic changes of TOP after PNT administration, which can inform necessary dose adjustments of TOP. To achieve this, nitrogen blue emissive carbon dots (B@NCDs) were produced and employed due to their unique fluorescent properties. When TOP is added to B@NCDs, it exhibits strong native fluorescence at 545 nm without influencing the B@NCDs' fluorescence at 447 nm. Conversely, PNT causes quenching of B@NCDs fluorescence, a property that enables the distinct detection of both drugs. The B@NCDs were fully characterized using different techniques, including ultraviolet-visible spectrophotometry, fluorescence analysis, X-ray diffraction (XRD), transmission electron microscopy (TEM), and FTIR spectroscopy. The proposed method demonstrated excellent linearity, selectivity, and sensitivity, with low detection limits (LOD, S/N = 3); 0.0016 μg mL-1 for TOP and 0.36 μg mL-1 for PNT. Applied to spiked rabbit plasma samples, this method offers a new approach for evaluating the pharmacokinetic interaction between TOP and PNT. It enables the determination of all pharmacokinetic parameters of TOP before and after coadministration with PNT, providing essential insights into whether dose adjustments are necessary. This research not only contributes to the field of drug monitoring and interaction studies but also exemplifies the potential of B@NCDs in complex biological matrices, paving the way for further pharmacological and therapeutic applications.
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Affiliation(s)
- Ashraf M Mahmoud
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Yahya S Alqahtani
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
| | - Al-Montaser Bellah H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
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Alhazzani K, Alanazi AZ, Mostafa AM, Barker J, El-Wekil MM, Ali AMBH. Cobalt-modulated dual emission carbon dots for ratiometric fluorescent vancomycin detection. RSC Adv 2024; 14:5609-5616. [PMID: 38357036 PMCID: PMC10865304 DOI: 10.1039/d3ra08899e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 02/07/2024] [Indexed: 02/16/2024] Open
Abstract
This work presents a simple yet selective fluorometric protocol for the quantification of vancomycin, an important antibiotic for treating infections caused by Gram-positive bacteria. A novel ratiometric fluorometric method for the determination of vancomycin is developed based on dual emissive carbon dots (DECDs) with emission at 382 nm and 570 nm in combination with Co2+ ions. Upon addition of Co2+ions, the fluorescence at 382 nm of DECDs is enhanced while emission at 570 nm remains constant. In the presence of vancomycin, it complexes with Co2+ leading to quenching of the 382 nm fluorescence due to strong binding with Co2+ in the Co@DECDs system. The DECDs are fully characterized by TEM and different spectroscopic techniques. The proposed ratiometric method is based on measuring fluorescence ratio (F570/F382) against vancomycin concentration and the method exhibits a good linearity range from 0.0 to 120.0 ng mL-1 with a low limit of detection (S/N = 3) of 0.31 ng mL-1. The method shows good selectivity with minimal interference from potential interfering species. This ratiometric fluorometric approach provides a promising tool for sensitive and specific vancomycin detection in clinical applications.
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Affiliation(s)
- Khalid Alhazzani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Ahmed Z Alanazi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Aya M Mostafa
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University Kingston-upon-Thames London KT1 2EE UK
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
| | - James Barker
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University Kingston-upon-Thames London KT1 2EE UK
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
| | - Al-Montaser Bellah H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
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Alanazi AZ, Alhazzani K, Mostafa AM, Barker J, El-Wekil MM, Ali AMBH. Selective and reliable fluorometric quantitation of anti-cancer drug in real plasma samples using nitrogen-doped carbon dots after MMIPs solid phase microextraction: Monitoring methotrexate plasma level. J Pharm Biomed Anal 2024; 238:115862. [PMID: 37976985 DOI: 10.1016/j.jpba.2023.115862] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/27/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
A novel selective and reliable ratiometric fluorescence probe has been successfully synthesized for precise, sensitive, and simple quantitation of methotrexate (MTX). Hydrothermal method was employed to fabricate nitrogen-doped carbon dots using Annona squamosa seeds (AS-CDs) as a starting material, and their characteristics were confirmed using transmission electron microscopy (TEM), UV-Vis spectroscopy, fluorescence spectroscopy, X-ray diffractometry (XRD), and Fourier Transform Infrared Spectroscopy (FTIR). The ratiometric fluorometric assay, which is based on measuring the ratio of emissions (F355/F430), has a wide detection range of 5-2000 ng /mL and a limit of detection (LOD, S/N = 3) of 1.5 ng /mL. The developed sensing method was successfully applied to the quantification of MTX in rabbit plasma samples and parenteral formulations, achieving satisfactory recoveries %. Magnetic molecularly imprinted solid-phase microextraction was used for selective extraction of MTX from plasma samples. The pharmacokinetic parameters were successfully determined in real rabbit plasma samples after intravenous administration of MTX. The as-designed probe does not only improve the sensitivity, but also enhances the precision and accuracy of the proposed method. Overall, this study presents a promising approach for the detection of MTX in genuine samples with acceptable degree of selectivity and sensitivity.
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Affiliation(s)
- Ahmed Z Alanazi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Khalid Alhazzani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Aya M Mostafa
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston-upon-Thames, London KT1 2EE, UK; Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - James Barker
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston-upon-Thames, London KT1 2EE, UK
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Al-Montaser Bellah H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
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Alhazzani K, Alanazi AZ, Mostafa AM, Barker J, El-Wekil MM, Ali AMBH. Selective fluorescence turn-on detection of combination cisplatin-etoposide chemotherapy based on N-CDs/GSH-CuNCs nanoprobe. RSC Adv 2024; 14:2380-2390. [PMID: 38213979 PMCID: PMC10783161 DOI: 10.1039/d3ra07844b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/04/2024] [Indexed: 01/13/2024] Open
Abstract
Cisplatin (CIS) and etoposide (ETP) combination therapy is highly effective for treating various cancers. However, the potential for pharmacokinetic interactions between these drugs necessitates selective sensing methods to quantitate both CIS and ETP levels in patient's plasma. This work develops a dual fluorescence probe strategy using glutathione-capped copper nanoclusters (GSH-CuNCs) and nitrogen-doped carbon dots (N-CDs) for the simultaneous analysis of CIS and ETP. The fluorescence signal of GSH-CuNCs at 615 nm increased linearly with CIS concentration while the N-CD emission at 480 nm remained unaffected. Conversely, the N-CD fluorescence was selectively enhanced by ETP with no interference with the CuNC fluorescence. Extensive materials characterization including UV-vis, fluorescence spectroscopy, XRD, and TEM confirmed the synthesis of the nanoprobes. The sensor showed high sensitivity with limits of detection of 6.95 ng mL-1 for CIS and 7.63 ng mL-1 for ETP along with excellent selectivity against potential interferences in rabbit plasma. Method feasibility was demonstrated with application to real rabbit plasma samples. The method was further applied to estimate the pharmacokinetic parameters of CIS before and after ETP coadministration. The dual nanoprobe sensing strategy enables rapid and selective quantitation of CIS and ETP levels to facilitate therapeutic drug monitoring and optimization of combination chemotherapy regimens.
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Affiliation(s)
- Khalid Alhazzani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Ahmed Z Alanazi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Aya M Mostafa
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University Kingston-upon-Thames London KT1 2EE UK
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
| | - James Barker
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University Kingston-upon-Thames London KT1 2EE UK
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
| | - Al-Montaser Bellah H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
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Mahmoud AM, Abu-Alrub SS, Al-Qarni AO, El-Wekil MM, Shahin RY. A reliable and selective ratiometric sensing probe for fluorometric determination of P 2O 74- based on AIE of GSH@CuNCs-assisted by Al-N@CQDs. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123850. [PMID: 38219614 DOI: 10.1016/j.saa.2024.123850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 01/16/2024]
Abstract
In this study, a novel composite material was developed for the ratiometric detection of pyrophosphate anion (P2O74-). This composite consisted of Al and nitrogen co-doped carbon dots (Al-N@CQDs) and glutathione-capped copper nanoclusters (GSH@CuNCs). The Al-N@CQDs component, with its high reserved coordination capacity of Al3+, induced the non-luminescent behavior of GSH@CuNCs, resulting in an aggregation-induced emission (AIE) effect. The hybrid material (Al-N@CQDs/GSH@CuNCs) exhibited dual-emission signals at 620 nm and 450 nm after integrating the two independent materials utilizing the AIE effect and the fluorescence resonance energy transfer (FRET) approach. This approach represents the first utilization of this composite for ratiometric detection. Nevertheless, upon the addition of P2O74-, the AIE and FRET processes were hindered due to the higher coordination interaction of Al3+ towards P2O74- compared to the amino/carboxyl groups on Al-N@CQDs. This successful interference of the AIE and FRET processes allowed for the effective estimation of P2O74-. The response ratio (F450/F620) increased with increasing the concentration of P2O74- in the range of 0.035-160 µM, with an impressive detection limit of 0.012 µM. This innovative approach of utilizing hybrid CQDs/thiolate-capped nanoclusters as a ratiometric fluorescent sensor for analytical applications introduces new possibilities in the field. The as-fabricated system was successfully applied to detect P2O74- in different real samples such as water, serum, and urine samples with acceptable results.
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Affiliation(s)
- Ashraf M Mahmoud
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Samer S Abu-Alrub
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Ali O Al-Qarni
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
| | - Reem Y Shahin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sphinx University, New Assiut City, Assiut, Egypt
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Alhazzani K, Alanazi AZ, Mostafa AM, Barker J, El-Wekil MM, Bellah H Ali AM. A selective dual quenching sensor (EY/BG@CDs) for simultaneous monitoring of gentamicin and ketorolac levels in plasma: a highly efficient platform that caters to the needs of therapeutic drug monitoring. RSC Adv 2023; 13:28940-28950. [PMID: 37795051 PMCID: PMC10545982 DOI: 10.1039/d3ra04894b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/23/2023] [Indexed: 10/06/2023] Open
Abstract
This research work introduces a novel sensor that utilizes two fluorophores to enable simultaneous monitoring of gentamicin sulphate (GNT) and ketorolac tromethamine (KET). The innovative sensor is composed of carbon dots (CDs) derived from black grapes (BG) and eosin Y (EY) dye. The interaction between the studied drugs and EY/BG@CDs sensor components allows for their simultaneous detection where GNT quenches the fluorescence of EY at 535 nm without affecting the fluorescence of CDs, while KET quenches the fluorescence of BG@CDs at 385 nm without impacting EY fluorescence. The BG@CDs probe was successfully characterized using various techniques such as absorption spectrophotometry, spectrofluorimetry, TEM imaging, infrared spectroscopic analysis, and XRD analysis. The suggested methodology was observed to be highly sensitive for the simultaneous determination of GNT and KET in their spiked rabbit plasma samples, with wide linear ranges and low limit of detection (LOD) values. The studied drugs were extracted using a highly selective extraction method involving protein precipitation followed by mixed mode solid phase extraction using an Oasis WCX cartridge. The simultaneous determination of GNT and KET is essential due to the potential interactions between the studied drugs. Therefore, this analysis can be used to evaluate the necessity of dose monitoring and the potential adverse effects of co-administration of these drugs.
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Affiliation(s)
- Khalid Alhazzani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Ahmed Z Alanazi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University Riyadh Saudi Arabia
| | - Aya M Mostafa
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University Kingston-upon-Thames London KT1 2EE UK
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
| | - James Barker
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University Kingston-upon-Thames London KT1 2EE UK
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
| | - Al-Montaser Bellah H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University Assiut Egypt
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