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Al-Qahtani SD, Hameed A, Aljuhani E, Shah R, Alharbi A, Asghar BH, El-Metwaly NM. Iron oxide nanopowder based electrochemical sensor for sensitive voltammetric quantification of midodrine. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103446] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Omar MA, Nagy DM, Halim ME. Simple ultrasensitive spectrofluorimetric method for determination of midodrine in its tablet form: Application to content uniformity testing. LUMINESCENCE 2019; 34:854-858. [PMID: 31338979 DOI: 10.1002/bio.3682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 05/23/2019] [Accepted: 06/12/2019] [Indexed: 11/07/2022]
Abstract
A novel, simple, sensitive method was developed for determining midodrine spectrofluorimetrically in both its raw pure form and its tablet form. This study is based on the native fluorescence of midodrine and discusses the optimum solvent used and the wavelength range. The presented method was then validated with respect to linearity, accuracy, precision, and limits of detection and quantitation. The constructed calibration curve showed a linear range of 0.1-2.0 μg/ml. The limit of detection and limit of quantitation values were 0.03 and 0.10 μg/ml respectively. Finally, content uniformity testing was applied according to the United States Pharmacopoeia by adapting the presented method.
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Affiliation(s)
- Mahmoud A Omar
- Department of Pharmacognosy and Pharmaceutical Chemistry, College of Pharmacy, Taibah University, Medinah, Saudi Arabia
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Dalia M Nagy
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Monica E Halim
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
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Omar MA, Nagy DM, Halim ME. Design and strategy approach for spectrofluorimetric determination of midodrine in tablets: Application to content uniformity testing. Microchem J 2019. [DOI: 10.1016/j.microc.2019.01.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Narenderan S, Meyyanathan S, Babu B, Yamjala K, Ashwini S. Determination of Midodrine and its Active Metabolite Desglymidodrine by LC-MS/MS and its Application in Human Pharmacokinetic Studies. CURR PHARM ANAL 2019. [DOI: 10.2174/1573412914666180213125537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Midodrine (MD) is a prodrug which is converted into Desglymidodrine
(DMD) after oral administration.
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Objective: The aim of the present study is to develop and validate a precise, accurate liquid chromatography-
tandem mass spectroscopy (LC-MS/MS) method for the separation and detection of Midodrine
and Desglymidodrine.
Methods:
The quantification of prodrug Midodrine (MD) and its active metabolite Desglymidodrine
(DMD) in human plasma was performed using simple and economical protein precipitation method.
Caffeine was used as an internal standard (IS). LC separation was carried out using Jones C18 column
(4.6mm x 150mm, 3µm). Isocratic elution was performed using 10mM ammonium formate (pH 4.0
adjusted with formic acid): methanol 30:70, v/v as a mobile phase, at a constant of flow of 0.5 ml/min.
Results:
Mass spectrometric detection was carried out at positive electrospray ionization with proton
adducts at m/z 255.0˃237.1, 198.1˃180.2 and 195.0˃138.1 for Midodrine, Desglymidodrine and caffeine
(IS) respectively, in MRM mode. The method was validated over a linear concentration range of
0.3-110 ng/ml (r2 =0.996 and r2 =0.9988) for both Midodrine and Desglymidodrine. The recovery of
Midodrine and Desglymidodrine were found to be 99 ± 0.12%. The precision (intra-day and inter-day)
and accuracy studies fulfilled the acceptance criteria.
Conclusion:
The method shows to be stable for the studied stability parameters and was successfully
applied for clinical pharmacokinetic studies.
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Affiliation(s)
- S.T. Narenderan
- Department of Pharmaceutical Analysis, JSS College of Pharmacy, (JSS Academy of Higher Education and Research, Mysore), Udhagamandalam Tamil Nadu-643001, India
| | - S.N. Meyyanathan
- Department of Pharmaceutical Analysis, JSS College of Pharmacy, (JSS Academy of Higher Education and Research, Mysore), Udhagamandalam Tamil Nadu-643001, India
| | - B. Babu
- Department of Pharmaceutical Analysis, JSS College of Pharmacy, (JSS Academy of Higher Education and Research, Mysore), Udhagamandalam Tamil Nadu-643001, India
| | - Karthik Yamjala
- Department of Pharmaceutical Analysis, JSS College of Pharmacy, (JSS Academy of Higher Education and Research, Mysore), Udhagamandalam Tamil Nadu-643001, India
| | - S.J. Ashwini
- Department of Pharmaceutical Analysis, JSS College of Pharmacy, (JSS Academy of Higher Education and Research, Mysore), Udhagamandalam Tamil Nadu-643001, India
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Omar MA, Nagy DM, Halim ME. The convenient use of fluorescamine for spectrofluorimetric determination of midodrine hydrochloride in pure form and its tablets formulation: Application to content uniformity testing. LUMINESCENCE 2018; 34:84-89. [PMID: 30536965 DOI: 10.1002/bio.3582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/23/2018] [Accepted: 11/07/2018] [Indexed: 11/06/2022]
Abstract
A novel sensitive and simple spectrofluorimetric method was developed then validated for determination of midodrine in both its authentic pure form and its tablets. This method is based on the reaction between midodrine's aliphatic primary amine moiety with fluorescamine reagent, using borate buffer at pH 7.8 and yielding a highly fluorescent product whose fluorescence intensity was measured at 462 nm after excitation at 388 nm. This method represents the first attempt for determination of midodrine spectrofluorimetrically. A calibration curve was constructed showing that the linear range was 0.2-3.0 μg/ml. The limit of detection and limit of quantitation values were 0.06 and 0.19 μg/ml respectively. The correlation coefficient (r) and the determination coefficient (r2 ) values were 0.9992 and 0.9984 respectively. The proposed method was validated according to ICH guidelines and successfully applied for determination of midodrine in its tablets with an overall % recovery of 99.56 ± 0.95. Finally, the presented method was adapted to study the content uniformity test according to United States Pharmacopeia guidelines.
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Affiliation(s)
- Mahmoud A Omar
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Dalia M Nagy
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Monica E Halim
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
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Patel DP, Nair S, Suhagia BN, Patel BM. A novel, sensitive and selective method of UPLC/MS-MS for rapid simultaneous determination of midodrine and its active metabolite desglymidodrine in human plasma: Application to support bioequivalence study in healthy human volunteers. J Pharm Biomed Anal 2016; 131:355-363. [PMID: 27639073 DOI: 10.1016/j.jpba.2016.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 08/31/2016] [Accepted: 09/02/2016] [Indexed: 11/19/2022]
Abstract
A specific, rapid, sensitive and selective ultra-performance liquid chromatography - tandem mass spectrometry has been developed for the simultaneous determination of midodrine and desglymidodrine in human plasma. The analytes and its deuterated analogs were quantitatively extracted from 100μL of human plasma by solid phase extraction technique. Separation of analytes was achieved on the Waters Acquity UPLC BEH C18 (50×2.1mm, 1.7μm) column using acetonitrile-4.0mM ammonium formate, pH 2.5(90:10, v/v) as mobile phase. The protonated analytes were quantified by selected reaction monitoring in the positive ionization mode by triple quadrupole mass spectrometer. The calibration plots were linear over the concentration range of 0.050-50.0ng/mL. The intra-batch and inter-batch precision (%CV) across quality control levels was <4.0 and the% mean relative recovery was ≥96%. Various other parameters like stability in different conditions; matrix effect and reproducibility of the method were performed in accordance with the guidelines specified by the USFDA for bioanalytical method development and validation. The developed method was successfully administered to the pharmacokinetics study of 5 mg midodrine tablet in 12 healthy subjects. Reproducibility of assay was proved by reanalysis of 48 incurred samples.
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Affiliation(s)
- Daxesh P Patel
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States
| | - Sneha Nair
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, India
| | | | - Bhargav M Patel
- Department of Chemistry, St. Xavier's College, Navrangpura, Ahmedabad 380009, India.
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Ali AA, Al-Ghobashy MA, Farid SF, Kassem MA. Development and validation of LC–MS/MS assay for the determination of the prodrug Midodrine and its active metabolite Desglymidodrine in plasma of ascitic patients: Application to individualized therapy and comparative pharmacokinetics. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 991:34-40. [DOI: 10.1016/j.jchromb.2015.03.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/25/2015] [Accepted: 03/31/2015] [Indexed: 02/03/2023]
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Selective determination of cysteines through precolumn double-labeling and liquid chromatography followed by detection of intramolecular FRET. Anal Bioanal Chem 2010; 399:1665-75. [DOI: 10.1007/s00216-010-4461-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 11/17/2010] [Accepted: 11/22/2010] [Indexed: 10/18/2022]
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Todoroki K, Yoshida H, Hayama T, Itoyama M, Nohta H, Yamaguchi M. Highly sensitive and selective derivatization-LC method for biomolecules based on fluorescence interactions and fluorous separations. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 879:1325-37. [PMID: 21190905 DOI: 10.1016/j.jchromb.2010.11.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 11/29/2010] [Accepted: 11/29/2010] [Indexed: 11/29/2022]
Abstract
A fluorescence derivatization LC method is a powerful tool for the analysis with high sensitivity and selectivity of biological compounds. In this review, we introduce new types of fluorescence derivatization LC analysis methods. These are (1) detection-selective derivatization methods based on fluorescence interactions generated from fluorescently labeled analytes: excimer fluorescence derivatization and fluorescence resonance energy transfer (FRET) derivatization; (2) separation-selective derivatization methods using the fluorous separation technique: fluorous derivatization, F-trap fluorescence derivatization, and fluorous scavenging derivatization (FSD).
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Affiliation(s)
- Kenichiro Todoroki
- Faculty of Pharmaceutical Sciences, Fukuoka University, Nanakuma, Johnan, Fukuoka 814-0180, Japan
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A fluorous tag-bound fluorescence derivatization reagent, F-trap pyrene, for reagent peak-free HPLC analysis of aliphatic amines. Anal Bioanal Chem 2009; 394:321-7. [DOI: 10.1007/s00216-009-2704-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2008] [Revised: 02/08/2009] [Accepted: 02/10/2009] [Indexed: 10/21/2022]
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Yoshitake M, Sejima N, Yoshida H, Todoroki K, Nohta H, Yamaguchi M. Selective Determination of Tryptophan-containing Peptides through Precolumn Derivatization and Liquid Chromatography Using Intramolecular Fluorescence Resonance Energy Transfer Detection. ANAL SCI 2007; 23:949-53. [PMID: 17690426 DOI: 10.2116/analsci.23.949] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A selective and sensitive fluorometric determination method for native fluorescent peptides has been developed. This method is based on intramolecular fluorescence resonance energy transfer (FRET) detection in a liquid chromatography (LC) system following precolumn derivatization of the amino groups of tryptophan (Trp)-containing peptides. In this detection process, we monitored the FRET from the native fluorescent Trp moieties (donor) to the derivatized fluorophore (acceptor). From a screening study involving 10 fluorescent reagents, we found that o-phthalaldehyde (OPA) generated FRET most effectively. The OPA derivatives of the native fluorescent peptides emitted OPA fluorescence (445 nm) through an intramolecular FRET process when they were excited at the excitation maximum wavelength of the Trp-containing peptides (280 nm). The generation of FRET was confirmed through comparison with the analysis of a non-fluorescent peptide (C-reactive protein fragment (77 - 82)) performed using LC and a three-dimensional fluorescence detection system. We were able to separate the OPA derivatives of the Trp-containing peptides when performing LC on a reversed-phase column. The detection limits (signal-to-noise ratio = 3) for the Trp-containing peptides, at a 20-microL injection volume, were 41 - 180 fmol. The sensitivity of the intramolecular FRET-forming derivatization method is higher than that of the system that takes advantage of the conventional detection of OPA derivatives. Moreover, native non-fluorescent amines and peptides in the sample monitored at FRET detection are weaker than those of conventional fluorescence detection.
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Affiliation(s)
- Makoto Yoshitake
- Faculty of Pharmaceutical Sciences, Fukuoka University, Nanakuma, Johnan, Fukuoka, Japan
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