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Elbashir AA, Osman A, Elawad M, Ziyada AK, Aboul-Enein HY. Application of capillary electrophoresis with capacitively contactless conductivity detection for biomedical analysis. Electrophoresis 2024; 45:400-410. [PMID: 38100198 DOI: 10.1002/elps.202300216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/26/2023] [Accepted: 12/06/2023] [Indexed: 03/20/2024]
Abstract
The coupling of capillary electrophoresis (CE) with capacitively coupled contactless conductivity detection (C4 D) has become convenient analytical method for determination of small molecules that do not possess chromogenic or fluorogenic group. The implementations of CE with C4 D in the determination of inorganic and organic ions and amino acids in biomedical field are demonstrated. Attention on background electrolyte composition, sample treatment procedures, and the utilize of multi-detection systems are described. A number of tables summarizing highly developed CE-C4 D methods and the figures of merit attained are involved. Lastly, concluding remarks and perspectives are argued.
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Affiliation(s)
- Abdalla A Elbashir
- Department, of Chemistry, College of Science, King Faisal University, Al-Hofuf, Al-Ahsa, Saudi Arabia
- Department of Chemistry, Faculty of Science, University of Khartoum, Khartoum, Sudan
| | - Abdelbagi Osman
- Department of Chemical Engineering, College of Engineering, Najran University, Najran, Saudi Arabia
| | - Mohammed Elawad
- Department of Chemistry, Faculty of Science, Omdurman Islamic University, Omdurman, Sudan
| | - Abobakr K Ziyada
- Department of General Studies, Jubail Industrial College, Jubail Industrial City, Saudi Arabia
| | - Hassan Y Aboul-Enein
- Pharmaceutical and Medicinal Chemistry Department, Division of Pharmaceutical and Drug Industries Research Division, National Research Centre, Cairo, Egypt
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Atia MA, Amuno RM, Kalsoom U, Ollerton S, Rhoden A, Haddad PR, Breadmore MC. Portable capillary electrophoresis coupled with swab-based extraction device for cleaning validation in pharmaceutical facilities. J Chromatogr A 2023; 1688:463666. [PMID: 36528899 DOI: 10.1016/j.chroma.2022.463666] [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: 08/07/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 12/23/2022]
Abstract
All pharmaceutical manufacturers are required to verify that their production equipment is free from contaminants. Here, we report the capability of a fully automated portable capillary electrophoresis instrument with an integrated sample swab extraction - the Grey Scan ETD-100 - for the detection of pharmaceutical residues on surfaces of manufacturing equipment. Lidocaine was used as a model compound and could be recovered from a surface by swabbing, extracted from the swab, and analysed within 1 min. The recovery of lidocaine from a stainless-steel coupon was 81.3 %, with a LOD of 0.13 µg/swab. This fast, sensitive, and simple method implemented on a user-friendly portable CE instrument without the need for manual sample pre-treatment provides the possibility for on-site rapid determination of equipment cleanliness in the pharmaceutical industry.
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Affiliation(s)
- Mostafa A Atia
- Australian Centre for Research on Separation Science (ACROSS), Chemistry, School of Natural Science, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia; Department of Analytical Chemistry, Faculty of Pharmacy Helwan University, Cairo 11795, Egypt
| | - Ria Marni Amuno
- Australian Centre for Research on Separation Science (ACROSS), Chemistry, School of Natural Science, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Umme Kalsoom
- GreyScan, 9/435 Williamstown Rd, Port Melbourne, Vicvoria 3207, Australia
| | - Samantha Ollerton
- GreyScan, 9/435 Williamstown Rd, Port Melbourne, Vicvoria 3207, Australia
| | - Alan Rhoden
- Pfizer Global Supply, 100 Route 206 North, Peapack, NJ 07977, USA
| | - Paul R Haddad
- Australian Centre for Research on Separation Science (ACROSS), Chemistry, School of Natural Science, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Michael C Breadmore
- Australian Centre for Research on Separation Science (ACROSS), Chemistry, School of Natural Science, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia.
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Tůma P, Sommerová B, Koval D, Šiklová M, Koc M. Plasma levels of creatine, 2-aminobutyric acid, acetyl-carnitine and amino acids during fasting measured by counter-current electrophoresis in PAMAPTAC capillary. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Tůma P. Determination of amino acids by capillary and microchip electrophoresis with contactless conductivity detection - Theory, instrumentation and applications. Talanta 2020; 224:121922. [PMID: 33379123 DOI: 10.1016/j.talanta.2020.121922] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 01/15/2023]
Abstract
This review article summarises aspects of the determination of amino acids using capillary and chip electrophoresis in combination with contactless conductivity detection from their historical beginnings to the present time. Discussion is included of the theory of conductivity detection in electromigration techniques, the design of contactless conductivity cells for detection in capillaries and on microchips, including the use of computer programs for simulation of the conductivity response and the process of the electrophoretic separation of amino acids. Emphasis is placed on optimisation of the background electrolyte composition, chiral separation, multidimensional separation, stacking techniques and the use of multidetection systems. There is also a description of clinical applications, the determination of amino acids in foodstuffs, waters, soils and composts with emphasis on modern techniques of sample treatment, such as microdialysis, liquid membrane extraction and many other techniques.
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Affiliation(s)
- Petr Tůma
- Department of Hygiene, Third Faculty of Medicine, Charles University, Ruská 87, 100 00, Prague 10, Czech Republic.
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Tůma P, Jaček M, Fejfarová V, Polák J. Electrophoretic stacking for sensitive determination of antibiotic ceftazidime in human blood and microdialysates from diabetic foot. Anal Chim Acta 2016; 942:139-145. [PMID: 27720117 DOI: 10.1016/j.aca.2016.09.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 08/29/2016] [Accepted: 09/10/2016] [Indexed: 12/30/2022]
Abstract
An electrophoretic stacking method has been developed for monitoring the therapeutic level of the antibiotic ceftazidime in blood plasma and microdialysates taken from peripheral soft tissues of the lower limbs of patients with diabetic foot syndrome. The biological samples are treated by addition of acetonitrile in an amount of 75% v/v and injected into a capillary in a large volume; after turning on the separation voltage, the residual acetonitrile is forced out of the capillary by the application of hydrodynamic pressure. The clinical samples were separated in an optimised background electrolyte composed of 50 mM chloroacetic acid +20% v/v methanol +0.5% v/v INST coating solution. The attained LOD for ceftazidime equalled 0.42 μg mL-1 (0.8 μM) and the migration time equalled 3.75 min when using a 25 μm capillary with minimum length of 31.5 cm. The separation was controlled by a maximum voltage of +30 kV and the movement of the analyte was accelerated by a pressure of 50 mbar. The RSD values for intra-day repeatability of the migration time and peak area are 0.14% and 3.8%, respectively; the inter-day values equalled 0.25% for the migration time and 7.3% for peak area, respectively. Pharmacological studies revealed that ceftazidime passes from the blood circulation to the peripheral tissues of the lower limbs with an efficiency of 20%. The introduction of CE control of ceftazidime level in diabetic foot represents a very important improvement in achieving the targeted therapeutic effect.
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Affiliation(s)
- Petr Tůma
- Charles University in Prague, Third Faculty of Medicine, Department of Biochemistry, Cell and Molecular Biology, Ruská 87, 100 00 Prague 10, Czech Republic.
| | - Martin Jaček
- Charles University in Prague, Third Faculty of Medicine, Department of Biochemistry, Cell and Molecular Biology, Ruská 87, 100 00 Prague 10, Czech Republic
| | - Vladimíra Fejfarová
- Institute for Clinical and Experimental Medicine, Diabetes Center, Vídeňská 1958, 140 21 Prague 4, Czech Republic
| | - Jan Polák
- Charles University in Prague, Third Faculty of Medicine, Center for Research on Diabetes, Metabolism and Nutrition, Ruská 87, Prague 10000, Czech Republic; 2nd Internal Medicine Department, Vinohrady Teaching Hospital, Šrobárova 50, Prague 10034, Czech Republic
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6
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The use of polarity switching for the sensitive determination of nitrate in human cerebrospinal fluid by capillary electrophoresis with contactless conductivity detection. J Chromatogr A 2016; 1447:148-54. [DOI: 10.1016/j.chroma.2016.04.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 04/05/2016] [Accepted: 04/14/2016] [Indexed: 01/04/2023]
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7
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Zhang M, Stamos BN, Amornthammarong N, Dasgupta PK. Capillary Scale Admittance Detection. Anal Chem 2014; 86:11538-46. [DOI: 10.1021/ac503245a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Min Zhang
- Department of Chemistry and
Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Brian N. Stamos
- Department of Chemistry and
Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Natchanon Amornthammarong
- Department of Chemistry and
Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
| | - Purnendu K. Dasgupta
- Department of Chemistry and
Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065, United States
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Ávila M, Floris A, Staal S, Ríos Á, Eijkel J, van den Berg A. Point of care creatinine measurement for diagnosis of renal disease using a disposable microchip. Electrophoresis 2013; 34:2956-61. [PMID: 24037968 DOI: 10.1002/elps.201300255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 07/16/2013] [Accepted: 08/04/2013] [Indexed: 11/07/2022]
Abstract
A point-of-care device for the determination of elevated creatinine levels in blood is reported. This device potentially offers a new and simple clinical regime for the determination of creatinine that will give huge time savings and removal of several steps of determination. The test employs a disposable prefilled microchip and the handheld Medimate Multireader®. By optimizing the analytical conditions it was found that the LOD of the proposed method was 87 μM creatinine, close to the normal human serum levels that are in the range of 60 to 100 μM. A statistical analysis of the residual shows a normal distribution, indicating the absence of systematic errors in the proposed method. The test can be used to distinguish patients with renal insufficiency (creatinine levels >100 μM) from healthy persons. Long-term monitoring could furthermore distinguish between acute renal failure and chronic kidney disease by the rate of creatinine concentration rise.
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Affiliation(s)
- Mónica Ávila
- Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha, Ciudad Real, Spain
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Knob R, Petr J, Ševčík J, Maier V. Enantioseparation of tartaric acid by ligand-exchange capillary electrophoresis using contactless conductivity detection. J Sep Sci 2013; 36:3426-31. [DOI: 10.1002/jssc.201300507] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 07/16/2013] [Accepted: 07/31/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Radim Knob
- Department of Analytical Chemistry; Regional Centre of Advanced Technologies and Materials; Faculty of Science; Palacky University in Olomouc; Olomouc Czech Republic
| | - Jan Petr
- Department of Analytical Chemistry; Regional Centre of Advanced Technologies and Materials; Faculty of Science; Palacky University in Olomouc; Olomouc Czech Republic
| | - Juraj Ševčík
- Department of Analytical Chemistry; Regional Centre of Advanced Technologies and Materials; Faculty of Science; Palacky University in Olomouc; Olomouc Czech Republic
| | - Vítězslav Maier
- Department of Analytical Chemistry; Regional Centre of Advanced Technologies and Materials; Faculty of Science; Palacky University in Olomouc; Olomouc Czech Republic
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Mai TD, Hauser PC. Study on the interrelated effects of capillary diameter, background electrolyte concentration, and flow rate in pressure assisted capillary electrophoresis with contactless conductivity detection. Electrophoresis 2013; 34:1796-803. [DOI: 10.1002/elps.201200586] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 11/27/2012] [Accepted: 11/27/2012] [Indexed: 11/11/2022]
Affiliation(s)
| | - Peter C. Hauser
- Department of Chemistry; University of Basel; Spitalstrasse; Basel; Switzerland
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Abstract
AbstractCapillary electrophoresis (CE) is an attractive technique in separation science because of its high separation performance, short analysis time and low cost. Electrochemical detection (EC) is a powerful tool for CE because of its high sensitivity. In this review, developments of CE-EC from 2008 to August, 2011 are reviewed. We choose papers of innovative and novel results to demonstrate the newest and most important progress in CE-EC.
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Opekar F, Štulík K. Some important combinations of detection techniques for electrophoresis in capillaries and on chips with emphasis on electrochemical principles. Electrophoresis 2011; 32:795-810. [DOI: 10.1002/elps.201000455] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 10/01/2010] [Accepted: 10/07/2010] [Indexed: 11/08/2022]
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Determination of the spectrum of low molecular mass organic acids in urine by capillary electrophoresis with contactless conductivity and ultraviolet photometric detection—An efficient tool for monitoring of inborn metabolic disorders. Anal Chim Acta 2011; 685:84-90. [DOI: 10.1016/j.aca.2010.11.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 11/01/2010] [Accepted: 11/03/2010] [Indexed: 11/23/2022]
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Tůma P, Samcová E, Štulík K. The Dependence of the Sensitivity and Reliability of Contactless Conductivity Detection on the Wall Thickness of Electrophoretic Fused-Silica Capillaries. ELECTROANAL 2009. [DOI: 10.1002/elan.200804398] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Kubáň P, Hauser PC. Ten years of axial capacitively coupled contactless conductivity detection for CZE - a review. Electrophoresis 2009; 30:176-88. [DOI: 10.1002/elps.200800478] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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