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Hassan AME, El-Feky HH, Amin AS, Batakoushy HA, El Hamd MA. Innovative assembled optode device for enhanced in-situ ceric ions (Ce 4+) evaluation and preconcentration in its real human, foods, water, and alloy samples. Spectrochim Acta A Mol Biomol Spectrosc 2024; 316:124314. [PMID: 38669985 DOI: 10.1016/j.saa.2024.124314] [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] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 03/30/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024]
Abstract
Cerium (Ce) are the most widely distributed rare earth element. However, humans exposed to Ce through inhalation have been reported to experience heat sensitivity, itching, and heightened taste and odour perception. The present study aims to develop an optical sensor device with a short response time and high selectivity for Ce amongst other ions in various environments. The potential applicability of a 6-hydroxy-5-((4-hydroxy-2-methylphenyl)diazenyl)pyrimidine-2,4(1H,3H)-dione (HHMDPD) assembled ligand as aceric ion (Ce4+)-selective caption optode was examined. After generating an ion pair with Tetra-n-octylammonium bromide (TOABr) and immobilizing on a tri-acetyl cellulose (TAC) membrane, the solubility of the HHMDPD ligand is improved. The constructed optode membrane reacts with Ce4+ by turning its orange colour to violet in Thiel buffer (pH of 5.5), which can be detected spectrophotometrically at λmax 667 nm. The measurement linearity was in the range of 0.70 - 18.7 × 10-6 mol/L of Ce4+ concentration with detection and quantification limits of 0.23 × 10-6 and 0.70 × 10-6 mol/L, respectively. Whatever the Ce4+ concentration in its real samples, the response time of the constructed device was 5.0 min. Additionally, it recorded repeatability and reproducibility with a %RSD of 1.37 and 2.55, respectively (n = 3). The proposed optode device exhibited complete reversibility, for multiple measurements, which could be easily achieved with the aid of a solution of HCl, 0.01 mol/L. The applicability of the proposed device has been effectively extended to analyze synthetic mixes corresponding to different Ce4+ real human, foods, water, and magnesium-based Ce4+ alloys.
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Affiliation(s)
- Abeer M E Hassan
- Department of Chemistry, Faculty of Pharmacy, Oct. 6(th) University, October, Egypt.
| | - Hesham H El-Feky
- Department of Chemistry, Faculty of Science, Benha University, Benha, Egypt.
| | - Alaa S Amin
- Department of Chemistry, Faculty of Science, Benha University, Benha, Egypt.
| | - Hany A Batakoushy
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Menoufia University, Shebin Elkom 32511, Egypt.
| | - Mohamed A El Hamd
- Department of Pharmaceutical Chemistry, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia; Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, South Valley University, Qena 83523, Egypt.
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2
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AbouAitah K, Abdelaziz AM, Higazy IM, Swiderska-Sroda A, Hassan AME, Shaker OG, Szałaj U, Stobinski L, Malolepszy A, Lojkowski W. Functionalized Carbon Nanotubes for Delivery of Ferulic Acid and Diosgenin Anticancer Natural Agents. ACS Appl Bio Mater 2024; 7:791-811. [PMID: 38253026 PMCID: PMC10880110 DOI: 10.1021/acsabm.3c00700] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/22/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024]
Abstract
It was investigated whether loading multi-wall carbon nanotubes (CNTs) with two natural anticancer agents: ferulic acid (FUA) and diosgenin (DGN), may enhance the anticancer effect of these drugs. The CNTs were functionalized with carboxylic acid (CNTCOOH) or amine (CNTNH2), loaded with the above pro-drugs, as well as both combined and coated with chitosan or chitosan-stearic acid. Following physicochemical characterization, the drug-loading properties and kinetics of the drug's release were investigated. Their effects on normal human skin fibroblasts and MCF-7 breast carcinoma cells, HepG2 hepatocellular carcinoma cells, and A549 non-small-cell lung cancer cells were evaluated in vitro. Their actions at the molecular level were evaluated by assessing the expression of lncRNAs (HULC, HOTAIR, CCAT-2, H19, and HOTTIP), microRNAs (mir-21, mir-92, mir-145, and mir-181a), and proteins (TGF-β and E-cadherin) in HepG2 cells. The release of both pro-drugs depended on the glutathione concentration, coating, and functionalization. Release occurred in two stages: a no-burst/zero-order release followed by a sustained release best fitted to Korsmeyer-Peppas kinetics. The combined nanoformulation cancer inhibition effect on HepG2 cancer cells was more pronounced than for A549 and MCF7 cells. The combined nanoformulations had an additive impact followed by a synergistic effect, with antagonism demonstrated at high concentrations. The nanoformulation coated with chitosan and stearic acid was particularly successful in targeting HepG2 cells and inducing apoptosis. The CNT functionalized with carboxylic acid (CNTCOOH), loaded with both FUA and DGN, and coated with chitosan-stearic acid inhibited the expression of lncRNAs and modulated both microRNAs and proteins. Thus, nanoformulations composed of functionalized CNTs dual-loaded with FUA and DGN and coated with chitosan-stearic acid are a promising drug delivery system that enhances the activity of natural pro-drugs.
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Affiliation(s)
- Khaled AbouAitah
- Medicinal
and Aromatic Plants Research Department, Pharmaceutical and Drug Industries
Research Institute, National Research Centre
(NRC), 33 El-Behouth Street, Dokki, Giza 12622, Egypt
| | - Ahmed M. Abdelaziz
- Supplementary
General Sciences, Future University, End of 90th Street, Fifth Settlement, New Cairo 11835, Egypt
| | - Imane M. Higazy
- Department
of Pharmaceutical Technology, Pharmaceutical and Drug Industries Research
Institute, National Research Centre (NRC), 33 El-Behouth Street, Dokki, Giza 12622, Egypt
| | - Anna Swiderska-Sroda
- Institute
of High Pressure Physics, Polish Academy
of Sciences, Sokolowska
29/37, 01-142 Warsaw, Poland
| | - Abeer M. E. Hassan
- Analytical
Chemistry Department, Faculty of Pharmacy, October 6 University, Giza 12585, Egypt
| | - Olfat G. Shaker
- Medical
Biochemistry
and Molecular Biology Department, Faculty of Medicine, Cairo University, Cairo 11511, Egypt
| | - Urszula Szałaj
- Institute
of High Pressure Physics, Polish Academy
of Sciences, Sokolowska
29/37, 01-142 Warsaw, Poland
- Faculty
of Materials Engineering, Warsaw University
of Technology, Wołoska 41, 02-507 Warsaw, Poland
| | - Leszek Stobinski
- NANOMATPL
Ltd., 14/38 Wyszogrodzka
Street, Warsaw 03-337, Poland
- Faculty
of Chemical and Process Engineering, Warsaw
University of Technology, 1 Warynskiego Street, 00-645 Warsaw, Poland
| | - Artur Malolepszy
- Faculty
of Chemical and Process Engineering, Warsaw
University of Technology, 1 Warynskiego Street, 00-645 Warsaw, Poland
| | - Witold Lojkowski
- Institute
of High Pressure Physics, Polish Academy
of Sciences, Sokolowska
29/37, 01-142 Warsaw, Poland
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AbouAitah K, Hassan HA, Ammar NM, Abou Baker DH, Higazy IM, Shaker OG, Elsayed AAA, Hassan AME. Novel delivery system with a dual–trigger release of savory essential oil by mesoporous silica nanospheres and its possible targets in leukemia cancer cells: in vitro study. Cancer Nanotechnol 2023. [DOI: 10.1186/s12645-022-00152-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Abstract
Introduction
Essential oils (EOs) are complex structures and possess several pharmacological effects. Nanomedicine offers a solution for their major limitations, including poor solubility, volatility, and non–controlled release, preventing their clinical use.
Methods
Here, we developed a novel delivery system by nanoformulations that were prepared by impregnating savory essential oil (SA) into mesoporous silica nanoparticles (MSNs). The nanoformulations were characterized and examined for their anticancer activities on cancer cells (HepG2 liver and HL60 leukemia cells) and MRC5 normal cells. We further tested the mechanisms of action and possible molecular targets against HL60 cells.
Results
The results demonstrated that SA was governed by nanoformulations under the dual–trigger release of pH/glutathione, and it typically fit the Korsmeyer–Peppas kinetic model. The nanoformulations enhanced the anticancer effect against HepG2 cells and HL60 cells compared to SA but were less cytotoxic to MRC5 normal cells and regulated various molecular pathways of apoptosis. Most importantly, new results were obtained on the genetic regulation principle through the high inhibition of long noncoding RNAs (HOTAIR, HULC, CCAT1, and H19) and matrix metalloproteinases (MMP–2 and MMP–9), providing a novel leukemia target.
Conclusions
These results suggest potential impacts for nanoformulations composed of SA with a sustained release pattern controlled by dual–trigger release of pH/GSH that enhanced anticancer cells. This approach may offer a new route for using EOs as new targets for cancers and open the door for deep preclinical investigations.
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Hassan AME, Alshehri RF, El-Bahy SM, Amin AS, Aish M. A modified selective optical sensor for selenium determination based on incorporating xylenol orange in a poly(vinyl chloride) membrane. RSC Adv 2023; 13:34618-34629. [PMID: 38024967 PMCID: PMC10680018 DOI: 10.1039/d3ra05308c] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
A novel optical sensor has been developed to measure selenium ions. The sensor membrane was created by mixing xylenol orange (XO) and sodium tetraphenylborate (NaTPB) with a plasticized poly(vinyl chloride) membrane that contained o-nitrophenyl octyl ether (o-NPOE) as a plasticizer. XO was previously established for use in a colorimeter to measure selenium in water and other media. At pH 6.6, the color of the detecting membrane changed from orange to pink when in contact with Se4+ ions. Various variables affecting the uptake efficiency were evaluated and optimized. Under optimum conditions (i.e., 30% PVC, 60% o-NPOE, and 5.0% of both XO and NaTPB for 5.0 min as the response time), the proposed sensor displayed a linear range 10-175 ng mL-1 with the detection and quantification limits of 3.0 and 10 ng mL-1, respectively. Also, the precision (RSD%) was better than 2.2% for six replicate determinations of 100 ng mL-1 Se4+ in various membranes. For the detection of Se4+, the selectivity of the sensor membrane was investigated for a number of possible interfering inorganic cations, but no appreciable interference was found. With the use of a 0.3 M HCl solution, the sensor was successfully restored, and the response that may have been reversible and reproducible exhibited an RSD% of less than 2.0%. The sensor has been successfully used to analyze Se4+ ions in environmental and biological materials.
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Affiliation(s)
- Abeer M E Hassan
- Chemistry Department, Faculty of Pharmacy, October 6th University October Egypt
| | - Reem F Alshehri
- Chemistry Department, Faculty of Science, Taibah University Kingdom of Saudi Arabia
| | - Salah M El-Bahy
- Chemistry Department, Turabah University College, Taif University P.O. Box 11099 Taif 21944 Saudi Arabia
| | - Alaa S Amin
- Chemistry Department, Faculty of Science, Benha University Benha Egypt
| | - Mai Aish
- Chemistry Department, Faculty of Science, Port Said University Port Said Egypt
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Elsheikh SG, Hassan AME, Fayez YM, El-Mosallamy SS. Green analytical chemistry and experimental design: a combined approach for the analysis of zonisamide. BMC Chem 2023; 17:38. [PMID: 37069703 PMCID: PMC10108544 DOI: 10.1186/s13065-023-00942-1] [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: 11/11/2022] [Accepted: 03/27/2023] [Indexed: 04/19/2023] Open
Abstract
Green analytical chemistry principles, as well as experimental design, are a combined approach adopted to develop sensitive reproducible stability indicating HPLC method for Zonisamide (ZNS) determination. The optimal conditions for three chromatographic parameters were determined using a central composite design of the response surface. Kromasil C18 column (150 mm × 4.6 mm, 5 µm) was utilized with ethanol, H2O (30:70 v/v) as a mobile phase at a flow rate of 1 mL/min at 35 °C. Good reproducibility and high sensitivity were achieved along (0.5-10 µg/mL) concentration range. In contrast, the TLC-densitometric method was performed on aluminum plates precoated with silica gel 60F254 as a stationary phase and chloroform: methanol: acetic acid (8:1.5:0.5 by volume) as a developing system. Reproducible results were obtained in the range of (2-10 μg/band). The chromatograms of HPLC and TLC were scanned at 280 nm and 240 nm, respectively. The suggested methods have been validated following ICH guidelines, and no statistically significant differences were detected between the results of the current study and the official USP method. It was also found that using experimental design implements the green concept by reducing the environmental impact. Finally, Eco-Scale, GAPI and AGREE were used to assess the environmental impacts of the suggested methods.
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Affiliation(s)
- Soha G Elsheikh
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
| | - Abeer M E Hassan
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
| | - Yasmin M Fayez
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562, Egypt
| | - Sally S El-Mosallamy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562, Egypt.
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Hassan AME, El Hamd MA, El-Maghrabey MH, Mahdi WA, Alshehri S, Batakoushy HA. Two Versatile Pencil Graphite-Polymer Sensor Electrodes Coupled with Potentiometry and Potentiometric Titration Methods: Profiling Determinations of Vitamin V in Tablets and Urine Samples. Sensors (Basel) 2022; 22:9128. [PMID: 36501827 PMCID: PMC9739328 DOI: 10.3390/s22239128] [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] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Herein, we developed a new pencil graphite ion-selective electrode strategy for the broadly used erectile dysfunction medication, sildenafil citrate (SC, vitamin V), for its automated potentiometry and potentiometric titration profiling in marketed tablets and human urine samples. The method was based on ion-pair complexation between SC and sodium tetraphenylborate (Na-TPB) or phosphotungstic acid (PTA), embedded into a pencil-fabricated graphite sensor electrode coated with poly(vinyl chloride, PVC) matrix, which is pre-plasticized with two different pre-studied plasticizers. The modern fabricated electrodes have a proven fast near-Nernstian response for SC over the concentration range of 1.0 × 10-6 to 1.0 × 10-2 and 1.0 × 10-5 to 1.0 × 10-2 M, with LODs of 6.5 × 10-7 and 5.5 × 10-6 over a pH 3-6 for (SC-TPB)- and (SC-PTA)-based membrane sensors, of O-nitrophenyl octyl ether (O-NPOE) and dioctyl phthalate (DOP), respectively. The selectivity coefficients for different interferents, including many inorganic cations, sugars, and/or nitrogenous compounds, were tested and confirmed. Applications of the proposed method were conducted on the determination of SC in its tablets and urine samples under the proper conditions. The percent recovery values were compared with those obtained by an official method and showed an RSD ≤ 0.3% (n = 5).
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Affiliation(s)
- Abeer M. E. Hassan
- Department of Chemistry, Faculty of Pharmacy, 6 October University, 6th of October City 12585, Egypt
| | - Mohamed A. El Hamd
- Department of Pharmaceutical Sciences, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, South Valley University, Qena 83523, Egypt
| | - Mahmoud H. El-Maghrabey
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Wael A. Mahdi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hany A. Batakoushy
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Menoufia University, Shebin Elkom 32511, Egypt
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Elsheikh SG, El-Mosallamy SS, Fayez YM, Hassan AME. Smart stability indicating spectrophotometric methods for determination of modafinil: the promising treatment for post-covid neurological syndrome. BMC Chem 2022; 16:79. [PMID: 36271411 PMCID: PMC9585712 DOI: 10.1186/s13065-022-00869-z] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 09/26/2022] [Indexed: 11/10/2022] Open
Abstract
Modafinil (MDF) is one of the neurostimulants with a potential effect in the COVID-19 ICU ventilated patients and post-COVID neurological syndrome treatment. Four rapid, simple and cost-effective stability indicating spectrophotometric methods were used for estimation of MDF in the presence of its acidic degradation product, namely; ratio difference (RD), first derivative of the ratio spectra (1DD), mean centering (MCR) and ratio subtraction method (RS). These methods were validated according to ICH guidelines and all methods revealed a good linearity in concentration range of (5-30 µg/mL) in addition to a good accuracy and precision with mean percentage recovery of 99.97 ± 0.305 for (RD), 100.10 ± 0.560 for (1DD), 100.02 ± 0.483 for (MCR) & 99.18 ± 1.145 for (RS) method. Specificity of the proposed methods was assessed and MDF was determined in the presence of up to 80% of its acidic degradation product for RD, 1DD, MCR and RS methods. The proposed methods were successfully applied for the determination of MDF in bulk powder and its tablet dosage form with mean percentage recovery of 100.33 ± 0.915 for (RD), 100.62 ± 0.985 for (1DD), 99.70 ± 0.379 for (MCR) and 100.21 ± 0.313 for (RS) method. The results obtained were statistically compared with those of official HPLC method and showed no significant difference with relevance accuracy and precision.
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Affiliation(s)
- Soha G Elsheikh
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
| | - Sally S El-Mosallamy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562, Egypt.
| | - Yasmin M Fayez
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562, Egypt
| | - Abeer M E Hassan
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
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Elgamal HA, Mohamed SA, Farghali AA, Hassan AME. PEG@ Carbon Nanotubes Composite as an Effective Nanocarrier of Ixazomib for Myeloma Cancer Therapy. Nanoscale Res Lett 2022; 17:72. [PMID: 35930196 PMCID: PMC9356125 DOI: 10.1186/s11671-022-03707-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
In this work, the preparation of a PEG@ multi-walled carbon nanotubes (MWCNTs) composite has shown a great potential effect in tumor therapy using graphite powder at room temperature. PEGylated MWCNTs were created and used as a carrier for targeting the antineoplastic drug Ixazomib to myeloma cancer cells (abnormal plasma cells). Ixazomib (MLN2238) was covalently encapsulated into functionalized carbon nanotubes modified with polyethylene glycol (PEG 600) to obtain MWCNTs-PEG-MLN2238. The Ixazomib@ MWCNTs-PEG composite shows promising results as an effective nanocarrier and using a small amount of MWCNTs-PEG-Ixazomib that has a low toxicity compared with that of Ixazomib alone. A multifunctional MWCNTs-PEG-Ixazomib composite is used to test biological effects on multiple myeloma cell lines RPMI 8226 using the MTT assay to enhance treatment efficiency. The cytotoxicity of free Ixazomib citrate (69% cell viability of RPMI8226 cells) was higher than that of MWCNTs-PEG-Ixazomib (91% cell viability) at the same maximum concentration of Ixazomib citrate (50 µg/ml). In this work, we performed a study of preparation of MWCNTs with an acceptable Ixazomib loading efficiency and determination of the drug systemic toxicity for the first time. In this study, the preparation of MWCNTs with acceptable Ixazomib loading efficiency and determination of the drug systemic toxicity was performed for the first time. The MTT assay results show decreasing the toxicity of Ixazomib after loading with the MWCNTs-PEG composite. The MWCNTs-PEG @ Ixazomib show promising results as an effective carrier of Ixazomib and lead to a decrease in the cost of using Ixazomib.
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Affiliation(s)
- Hanady A. Elgamal
- Material Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, 62511 Egypt
- National Organization of Drug Control and Research, Dokki, Egypt
| | | | - Ahmed A. Farghali
- Material Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, 62511 Egypt
| | - Abeer M. E. Hassan
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
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Elsheikh SG, Hassan AME, Fayez YM, El-Mosallamy SS. Greenness Assessment of Two Validated Stability Indicating Chromatographic Methods for Estimating Modafinil Using Analytical Eco-Scale. J AOAC Int 2021; 105:379-386. [PMID: 34626119 DOI: 10.1093/jaoacint/qsab132] [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: 05/12/2021] [Revised: 09/12/2021] [Accepted: 09/23/2021] [Indexed: 11/14/2022]
Abstract
BACKGROUND Modafinil (MDF) is one of the drugs that used for the treatment of narcolepsy. OBJECTIVE This manuscript involves the development and validation of two chromatographic stability indicating methods for MDF in the presence of its acid induced degradation. METHODS Modafinil was degraded under different stress conditions and identification of the degradation product was performed using infrared and mass spectroscopy. The first method was thin layer chromatography where aluminum backed silica gel 60F254 plates were used and the developing system was dichloromethane- methanol (9:1, v/v). While the second method was an eco- friendly (HPLC) that utilized C-18 column and ethanol- H2O (30:70, v/v) as a mobile phase at flow rate 1 mL/min and UV detection at 220 nm. RESULTS Good linear relationships were obtained within ranges of (1-10 µg/band) and (2-10 µg/mL) for TLC-densitometry and HPLC, respectively. The obtained results were statistically compared with those of the official HPLC method and showed no significant difference with respect to their accuracy and precision at p = 0.05. Greenness scores represent excellent green analysis in comparison with the reported studies. CONCLUSIONS The proposed methods were validated according to ICH guidelines and were applied on bulk powder and pharmaceutical dosage form using eco-friendly mobile phases as the worldwide trend. HIGHLIGHTS Chromatographic methods have been validated for estimation of MDF in the presence of its degradation product. Clarification of degradation pathway and the elucidation of the structure were stated for the first time. It's the first published method using greenness assessment metrics for the analysis of MDF.
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Affiliation(s)
- Soha G Elsheikh
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
| | - Abeer M E Hassan
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
| | - Yasmin M Fayez
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562 Egypt
| | - Sally S El-Mosallamy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El Aini, Cairo, 11562 Egypt
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Hassan AME, Ahmed HM, Aboul-Enein HY. New Simple Ion-Selective Membrane Electrode for Serious Environmental Pollutant, Mercury (II), Analysis in Aqueous Solution, Fluorescent Mercury Lamp White Dust, Mercurochrome and Dental Alloy. CURR ANAL CHEM 2018. [DOI: 10.2174/1573411012666160809120706] [Citation(s) in RCA: 2] [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] [Indexed: 11/22/2022]
Affiliation(s)
- Abeer M. E. Hassan
- Analytical Chemistry Department, Faculty of Pharmacy, October 6 University, 6th of October City, Egypt
| | - Hytham M. Ahmed
- Pharmaceutical Analysis Department, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
| | - Hassan Y. Aboul-Enein
- Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, Dokki, Giza 12622, Egypt
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