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El-Malla SF, Hamza AA, Elagamy SH. Effective spectrophotometric methods for resolving the superimposed spectra of Diclofenac Potassium and Methocarbamol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122662. [PMID: 37011438 DOI: 10.1016/j.saa.2023.122662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 03/18/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
The UV spectra of Diclofenac Potassium DIC and Methocarbamol MET are superimposed making their analysis using direct or derivative spectrophotometric methods quite complicated. This study presents four effective spectrophotometric methods that enable simultaneous determination of both drugs without interference. The first method is based on application of simultaneous equation method on their zero order spectra where DIC has shown absorbance maxima at 276 nm and MET displays two absorbances maxima at 273 nm and 222 nm in distilled water. The second method relies on dual wavelength method, the two wavelengths (232 and 285 nm) were chosen for determination of DIC where the absorbance differences at these wavelengths are proportional to DIC concentration while the absorbance differences of MET are equal to zero. For the determination of MET, the two wavelengths (212 and 228 nm) were selected. The third method of first-derivative ratio has been applied where the derivative ratio absorbances of DIC and MET were measured at 286.1 and 282.4 nm, respectively. The fourth method utilizing ratio difference spectrophotometric (RD) method was eventually performed on the binary mixture. The amplitude difference between the two wavelengths (291and 305 nm) was calculated for DIC estimation while the amplitude difference between the two wavelengths (227and 273 nm) for MET determination. All methods show linearity range from 2.0-25 μg. mL-1 and 6.0-40 μg. mL-1 for DIC and MET respectively. The developed methods have been statistically compared with a reported method based on first derivative method and the results of statistical comparison confirm the accuracy and precision of the proposed methods therefore they can be effectively applied for determination of MET and DIC in pharmaceutical dosage form.
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Affiliation(s)
- Samah F El-Malla
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt.
| | - Aliaa A Hamza
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Samar H Elagamy
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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Khan MN, Irum, Gul S, Muslima, Mursaleen M. Micellar-Enhanced Spectrofluorimetric Method for Quantification of Diclofenac Potassium in Pure Form, in Pharmaceutical Preparations and Human Plasma. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-2020-2290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A rapid, simple and economical spectrofluorimetric method for the determination of diclofenac potassium in pure form, in pharmaceutical preparations and in human plasma has been developed. The method is based on the enhancement of the fluorescence signal of diclofenac potassium by the addition of sodium dodecyl sulphate in McIvaine buffer with a pH of 5. Different experimental conditions such as buffer type, pH, type and concentration of surfactants were investigated. The fluorescence intensity of the solution was recorded at 361 nm after excitation at 243 nm. The method shows linearity in the concentration range of 0.2 μg mL–1–10 μg mL–1 with a good correlation coefficient of 0.997. The relative standard deviation value was 3.62 (n = 7). The limit of detection and limit of quantification were calculated to be 2.84 × 10–3 μg mL–1 and 9.47 × 10–3 μg mL-1, respectively. The effect of excipients and co-administrated drugs was investigated and no interference was observed. The method was successfully applied for the determination of diclofenac potassium in pure form, in pharmaceutical products and in human plasma. The percentage recoveries obtained ranged from 100.25% to 102.16% for pure form and 97.50% to 102.00% for pharmaceutical products and from 98.50% to 101.67% for human plasma.
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Magdy G, Belal FF, Abdel-Megied AM, Abdel Hakiem AF. Micelle-Enhanced conventional and synchronous spectrofluorimetric methods for the simultaneous determination of lesinurad and febuxostat: Application to human plasma. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119239. [PMID: 33310619 DOI: 10.1016/j.saa.2020.119239] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/05/2020] [Accepted: 11/14/2020] [Indexed: 05/26/2023]
Abstract
A simple synchronous spectrofluorimetric method was developed for simultaneous determination of lesinurad and febuxostat. The investigated drugs were measured at 294 and 329 nm, respectively in the presence of each other without interference at Δλ of 50 nm (Method I). The different experimental parameters affecting the fluorescence intensities were carefully studied and optimized. The maximum synchronous fluorescence intensities were obtained at pH 6.5 using borate buffer and distilled water was used as a diluting solvent. Excellent linearity ranges were obtained using 20.0-500.0 ng mL-1 and 1.0-80.0 ng mL-1 for lesinurad and febuxostat, respectively. The method exhibited high sensitivity with detection limits down to 4.0 ng mL-1 and 0.01 ng mL-1 and quantitation limits down to 12.12 ng mL-1 and 0.02 ng mL-1, respectively. Recovery percentages ranged from 97.68 to 103.37% were obtained upon spiking of human plasma samples, indicating high bioanalytical applicability. Concerning Method II, methanolic solution of lesinurad was measured spectroflourimetrically with λexcitation at 290 nm and λemission at 341 nm with high sensitivity using borate buffer of pH 6.5 and methanol as a diluting solvent. A considerable enhancement of the fluorescence intensity was achieved by using 1.0% w/v cetremide as a micellar system. The method was rectilinear over the concentration range of 3.0-80.0 ng mL-1 with detection and quantitation limits down to 0.47 and 1.42 ng mL-1, respectively. The developed method was efficiently applied for the estimation of the cited drug in spiked human plasma with high recovery percentages (98.58-101.64%). The methods were validated according to the ICH guidelines and further applied to commercial tablets with good results.
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Affiliation(s)
- Galal Magdy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy Kafrelsheikh University, Kafrelsheikh, P.O. Box 33511, Egypt
| | - Fathalla F Belal
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura, P.O. Box 35516, Egypt
| | - Ahmed M Abdel-Megied
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy Kafrelsheikh University, Kafrelsheikh, P.O. Box 33511, Egypt; School of Pharmacy, Pacific University Oregon, Hillsboro, OR, 97123, USA.
| | - Ahmed F Abdel Hakiem
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy Kafrelsheikh University, Kafrelsheikh, P.O. Box 33511, Egypt
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Kamel NM, Samaha MW, Elzoghby AO, El-Kimary EI. Sensitive Inexpensive HPLC Determination of Novel Anticancer Combination in Nanoparticles and Rat Plasma: Pharmacokinetic Application. J Chromatogr Sci 2021; 58:334-345. [PMID: 32043118 DOI: 10.1093/chromsci/bmz118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 09/25/2019] [Accepted: 11/17/2019] [Indexed: 11/12/2022]
Abstract
Two high-performance liquid chromatography-diode array detection methods have been developed and validated for the simultaneous quantification of genistein (GNS) and all trans retinoic acid (ATRA) as a novel anticancer combination therapy in their co-formulated nanoparticles and in rat plasma. Separation was performed on C18 column (250 × 4.6 mm, 5 μm) using celecoxib as internal standard. A mobile phase containing acetonitrile and water adjusted to pH 3 using 1% trifluoroacetic acid was delivered in gradient elution modes with time programmed UV detection. For extraction of the drugs and the internal standard from rat plasma, liquid- liquid extraction was applied. The proposed methods were validated as per International Conference on Harmonisation (ICH) guidelines (in the range 0.1-10 μg/mL for analysis of GNS and ATRA in nanoparticles) or according to Food and Drug Administration (FDA) guidance on bioanalytical method validation (in the range 0.025-20 μg/mL for analysis of GNS and ATRA in rat plasma). Pharmacokinetic study in six rats was performed following intravenous (IV) administration of a single dose of 0.5 mg/Kg of GNS and ATRA. The drugs' concentrations were measured up to 24 hours, and different pharmacokinetic parameters were calculated. The obtained parameters were comparable with the reported values for IV administration of each drug alone in rats. This confirms the applicability of the proposed method in monitoring the levels of the two drugs in vivo following their coadministration and indicating that the two drugs could be coadministered as a promising novel combination therapy for the treatment of lung cancer without great alteration in their pharmacokinetic parameters compared with their individual IV administration.
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Affiliation(s)
- Nayra M Kamel
- Faculty of Pharmacy, Cancer Nanotechnology Research Laboratory (CNRL), Alexandria University, El-Khartoum square, Azarita, Alexandria 21521, Egypt.,Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, El-Khartoum square, Azarita, Alexandria 21521, Egypt
| | - Magda W Samaha
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, El-Khartoum square, Azarita, Alexandria 21521, Egypt
| | - Ahmed O Elzoghby
- Faculty of Pharmacy, Cancer Nanotechnology Research Laboratory (CNRL), Alexandria University, El-Khartoum square, Azarita, Alexandria 21521, Egypt.,Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, El-Khartoum square, Azarita, Alexandria 21521, Egypt
| | - Eman I El-Kimary
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Alexandria University, El-Khartoum square, Azarita, Alexandria 21521, Egypt
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El-Kimary EI, Khamis EF, Belal SF, Abdel Moneim MM. Robust Chromatographic Methods for the Analysis of Two Quaternary Mixtures Containing Paracetamol, Codeine, Guaifenesin and Pseudoephedrine or Phenylephrine in their Dosage Forms. J Chromatogr Sci 2019; 57:828-837. [PMID: 31504290 DOI: 10.1093/chromsci/bmz057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 04/13/2019] [Indexed: 11/13/2022]
Abstract
Two simple validated and highly selective methods for analysis of paracetamol, codeine, guaifenesin and pseudoephedrine or phenylephrine quaternary mixtures were developed. The first method is a high performance liquid chromatography with diode array detection method where separation was successful using Agilent C18 (150 × 4.6 mm) column, gradient elution of phosphate buffer pH 3, methanol and acetonitrile and diode-array detection at 210 nm. The second method is a HPTLC method followed by densitometric measurement of the spots at 257 nm. Separation was carried out on Merck HPTLC aluminum sheets of silica gel using methylene chloride: methanol: glacial acetic acid: ammonia (17.8: 1.68: 0.4: 0.12, v/v) mobile phase. The methods were applied successfully for analysis of both quaternary mixtures in laboratory-prepared tablets and also validated in regards to linearity, precision, accuracy, sensitivity and stability.
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Affiliation(s)
- Eman I El-Kimary
- Faculty of Pharmacy, Department of Pharmaceutical Analytical Chemistry, University of Alexandria, El-Messalah, Alexandria 21521, Egypt
| | - Essam F Khamis
- Faculty of Pharmacy, Department of Pharmaceutical Analytical Chemistry, University of Alexandria, El-Messalah, Alexandria 21521, Egypt
| | - Saeid F Belal
- Faculty of Pharmacy, Department of Pharmaceutical Analytical Chemistry, University of Alexandria, El-Messalah, Alexandria 21521, Egypt
| | - Mona M Abdel Moneim
- Faculty of Pharmacy and Drug Manufacturing, Department of Pharmaceutical Chemistry, Pharos University in Alexandria, Alexandria 21311, Egypt
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Hosny NM, Atia NN, El-Gizawy SM. A review on: Analysis of certain drugs used in gout treatment. Microchem J 2019. [DOI: 10.1016/j.microc.2019.05.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Atia NN, El-Gizawy SM, Hosny NM. Facile micelle-enhanced spectrofluorimetric method for picogram level determination of febuxostat; application in tablets and in real human plasma. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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A novel voltammetry offline coupled MALDI/TOF MS characterization of electrochemical reaction products and the voltammetric determination of febuxostat in human plasma. Talanta 2019; 194:542-547. [DOI: 10.1016/j.talanta.2018.10.087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 11/24/2022]
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A novel HPLC-DAD method for simultaneous determination of febuxostat and diclofenac in biological samples: pharmacokinetic outcomes. Bioanalysis 2019; 11:41-54. [DOI: 10.4155/bio-2018-0219] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Aim: To develop a simple HPLC-DAD method for simultaneous determination of febuxostat (FEB) and diclofenac (DIC) in biological samples to assess pharmacokinetic outcomes of their coadministration. Methodology & results: Sample preparation was performed by liquid–liquid extraction. Drugs analysis was done on C18 column using methanol-formic acid pH 2.1 (76:24, v/v) as mobile phase and time-programmed UV detection. Lower limits of quantitation for FEB and DIC were 10 and 20 ng/ml, respectively. Baseline pharmacokinetics were similar to published data on either drug alone. Coadministration led to more than twofold increase in FEB Cmax and AUC together with a reduced hepatic uptake in rats. Conclusion: DIC interfered with initial distribution and terminal clearance of FEB potentially due to reduced FEB hepatic uptake.
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El-Kimary EI, Ragab MA. Box-Behnken response surface modeling assisted enantiomeric resolution of some racemic β-blockers using HPTLC and β-cyclodextrin as chiral mobile phase additive: Application to check the enantiomeric purity of betaxolol. Chirality 2018; 30:1195-1205. [DOI: 10.1002/chir.23012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/20/2018] [Accepted: 08/10/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Eman I. El-Kimary
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy; Alexandria University; Alexandria Egypt
| | - Marwa A.A. Ragab
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy; Alexandria University; Alexandria Egypt
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El-Gizawy SM, Atia NN, Hosny NM. Fluorimetric determination of febuxostat in dosage forms and in real human plasma via Förster resonance energy transfer. LUMINESCENCE 2018; 33:877-884. [DOI: 10.1002/bio.3485] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 02/01/2018] [Accepted: 02/26/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Samia M. El-Gizawy
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy; Assiut University; Assiut Egypt
| | - Noha N. Atia
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy; Assiut University; Assiut Egypt
| | - Noha M. Hosny
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy; Assiut University; Assiut Egypt
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Mohamed AMI, Omar MA, Derayea SM, Hammad MA, Mohamed AA. Innovative thin-layer chromatographic method combined with fluorescence detection for specific determination of Febuxostat: Application in biological fluids. Talanta 2018; 176:318-328. [DOI: 10.1016/j.talanta.2017.08.051] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 08/13/2017] [Accepted: 08/14/2017] [Indexed: 02/03/2023]
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Hosny NM, Atia NN, El-Gizawy SM, Badary DM, Hareedy MS. Innovative HPTLC method with fluorescence detection for assessment of febuxostat–montelukast combination and study of their protective effects against gouty arthritis. Analyst 2018; 143:4366-4378. [DOI: 10.1039/c8an00772a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This study was designed to evaluate the potential protective effects of montelukast, febuxostat and their combination on a model of acute gouty arthritis, and to establish a HPTLC method for determination of both drugs simultaneously.
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Affiliation(s)
- Noha M. Hosny
- Department of Pharmaceutical Analytical Chemistry
- Faculty of Pharmacy
- Assiut University
- Assiut 71526
- Egypt
| | - Noha N. Atia
- Department of Pharmaceutical Analytical Chemistry
- Faculty of Pharmacy
- Assiut University
- Assiut 71526
- Egypt
| | - Samia M. El-Gizawy
- Department of Pharmaceutical Analytical Chemistry
- Faculty of Pharmacy
- Assiut University
- Assiut 71526
- Egypt
| | - Dalia M. Badary
- Department of Pathology
- Faculty of Medicine
- Assiut University
- Assiut 71526
- Egypt
| | - Mohammad S. Hareedy
- Department of Pharmacology
- Faculty of Medicine
- Assiut University
- Assiut 71526
- Egypt
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NIGOVIC B, MILANOVIC I. Green Electroanalytical Method for Fast Measurement of Xanthine Oxidase Inhibitor Febuxostat. ANAL SCI 2017; 33:1219-1223. [DOI: 10.2116/analsci.33.1219] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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