1
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Üstündağ İ, Caglayan MO. Spectroscopic determination of hydrophobic adulterant tadalafil by aptasensor based ellipsometry. Talanta 2024; 266:124940. [PMID: 37454513 DOI: 10.1016/j.talanta.2023.124940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 07/04/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
Tadalafil is one of the selective phosphodiesterase type 5 inhibitors (PDE5) and serves as the active compound in drugs used for the treatment of erectile dysfunction. These PDE5 inhibitors are prescribed under medical supervision. However, cases of adulteration of dietary supplements with PDE5 inhibitors or their unapproved analogs have been reported worldwide. The presence of the PDE5 inhibitors in such supplements poses a serious health risk to consumers, particularly when combined with certain nitrate-containing drugs, as their toxic effects have not been thoroughly assessed and may result in unpredictable adverse reactions. Therefore, it is crucial to detect adulteration in these dietary supplements. However, current methods for PDE5 inhibitor detection rely on time-consuming and expensive analytical techniques, although they are sensitive. In this study, we propose an aptasensor based on ellipsometry for the detection of PDE5 inhibitors. To enhance the detection specificity for PDE5 inhibitors, we designed an aptamer with a hydrophobic pocket that incorporates a guanine base-rich region and a three-way junction. This design is particularly effective considering the poor aqueous solubility of PDE5 inhibitors. Preliminary results demonstrate that tadalafil detection in various media can be achieved within the range of 1-2000 ng/mL. The limit of detection for the active compound of tadalafil is as low as 1.82 ng/mL.
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Affiliation(s)
- İlknur Üstündağ
- Kutahya Dumlupinar University, Physics Department, Kutahya, Turkey
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2
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Ali AMBH, Abdel-Aal FAM, Rageh AH, Mohamed AMI. A Comprehensive Review on Analytical Techniques for Determination of Sex Stimulants, PDE5 Inhibitors in Different Matrices with Special Focus on the Electroanalytical Methods. Crit Rev Anal Chem 2022:1-30. [PMID: 36508289 DOI: 10.1080/10408347.2022.2152274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Erectile dysfunction (ED) is one of the most common chronic diseases affecting men and its incidence increases with aging. Due to its substantial influence on the quality of life, phosphodiesterase type-5 (PDE5) inhibitors have been implemented to treat ED by increasing the penile blood flow that results in improving erection. PDE5 inhibitors is a class of drugs that affects many pharmacological sectors, and it is essential to review the different analytical methods described for their determination. Few reviews were published concerning this group of drugs. For this reason, this review article gathers the different analytical methods used to determine PDE5 inhibitors in pharmaceutical and biological samples over the past 20 years. Different analytical techniques were used to analyze these compounds in different matrices such as separation methods (capillary electrophoresis, LC-MS, UPLC-MS/MS, and GC-MS), spectroscopic methods (UV-visible methods, FT-IR spectroscopy and spectrofluorometry) and electrochemical methods (polarography, voltammetry and potentiometry). This review focuses on the different electrochemical methods and their use in analytical determination of PDE5 inhibitors in pharmaceutical dosage forms and biological samples. Moreover, it discusses the different modified electrodes used for their electroanalytical determination and the behavior of the studied drugs at different modified electrodes. Additionally, this review discusses the pharmacokinetics of the studied compounds and their interactions with other co-administered drugs especially the metabolic interactions between the studied compounds and other co-administered drugs in different matrices. This literature survey would provide a beneficial guide for future analytical investigation of PDE5 inhibitors.
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Affiliation(s)
- Al-Montaser Bellah H Ali
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Fatma A M Abdel-Aal
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Azza H Rageh
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Abdel-Maaboud I Mohamed
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
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3
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Ali AMBH, Abdel-Aal FAM, Rageh AH, Mohamed AMI. Cytochrome P450 3A4-mediated pharmacokinetic interaction study between tadalafil and canagliflozin using high-performance thin-layer chromatography. J Sep Sci 2022; 45:4187-4197. [PMID: 36200644 DOI: 10.1002/jssc.202200531] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/15/2022] [Accepted: 09/24/2022] [Indexed: 12/13/2022]
Abstract
Diabetes is a known risk factor for sexual dysfunction in men; diabetic men have an increased risk of erectile dysfunction compared to non-diabetic men. Canagliflozin is one of the common antidiabetic drugs that is readily used in the treatment of type-2 diabetes. Concomitantly phosphodiesterase 5 inhibitors, such as tadalafil, can be given to the patient to alleviate erectile dysfunction. Canagliflozin is reported to be one of the cytochrome P450 3A4 enzyme inhibitors, that might seriously influence blood concentration levels of tadalafil but there is no study till now, discussing this interaction. Therefore, a fast, simple, and sensitive high-performance thin-layer chromatographic method was developed, validated, and applied for the simultaneous determination of tadalafil and canagliflozin in spiked and real human plasma. The limit of detection for tadalafil was 0.14 ng/band and for canagliflozin was 0.16 ng/band. The limit of quantitation value for tadalafil was 0.43 ng/band and for canagliflozin was 0.47 ng/band. Tadalafil and canagliflozin were determined simultaneously in real human plasma using the described procedure and the method was applied for in vivo pharmacokinetic drug interaction study between the studied drugs, which proved significant interaction between them when administered simultaneously.
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Affiliation(s)
- Al-Montaser Bellah H Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Fatma A M Abdel-Aal
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Azza H Rageh
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Abdel-Maaboud I Mohamed
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
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4
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Atty SA, El-Hadi HRA, Eltanany BM, Zaazaa HE, Eissa MS. Analytical Eco-Scale for Evaluating the Uniqueness of Voltammetric Method used for Determination of Antiemetic Binary Mixture Containing Doxylamine Succinate in Presence of its Toxic Metabolite. Electrocatalysis (N Y) 2022. [DOI: 10.1007/s12678-022-00751-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AbstractGreen analytical procedures are gaining popularity in the pharmaceutical research area as a way to reduce environmental impact and improve analyst health safety. The current work presents a green and sensitive electrochemical carbon paste electrode that has been chemically modified with zirconium dioxide and multi-walled carbon nanotubes for estimation of pyridoxine HCl (PYR) and doxylamine succinate (DOX) using the square wave voltammetric technique. Under optimum conditions, the linearity ranges were 20.00–2000.00 ng mL−1 and 2.00–20.00 µg mL−1 for both drugs in the 1st linear segment and 2nd linear segment, respectively. Stability testing assesses how the quality of a drug substance changes over time, depending on environmental and laboratory factors. DOX was found to undergo oxidative degradation when refluxed for 7 h using 30% H2O2 and the degraded product (DOX DEG) (toxic metabolite) was successfully characterized utilizing LC–MS. The developed electrode showed selectivity for the determination of binary mixture in pure form, pharmaceutical form, and in the presence of DOX DEG and common interfering molecules with good recovery. The proposed method was found to be eco-friendlier than the reported method in terms of the use of hazardous chemicals and solvents, energy consumption, and waste generation.
Graphical Abstract
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5
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Elama HS, Shalan SM, El-Shabrawy Y, Eid MI, Zeid AM. A synchronous spectrofluorometric technique for simultaneous detection of alfuzosin and tadalafil: applied to tablets and spiked biological samples. ROYAL SOCIETY OPEN SCIENCE 2022. [PMID: 35845851 DOI: 10.5061/dryad.7m0cfxpwq] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A facile, accurate, eco-friendly and sensitive spectrofluorometric method was evolved to assay alfuzosin hydrochloride (AFH) and tadalafil (TDF) in different matrices. Such a co-administered combination is clinically used for the treatment of lower urinary tract symptoms. Both compounds are characterized by their native fluorescence spectra upon excitation at specific wavelengths. Their characteristic fluorescence spectra were used for sensitive assay of the studied analytes in tablets and human biological samples. The assay principle is based on first-order synchronous spectrofluorometric scan using Δλ = 60 nm in which AFH peaks were recorded at 366 nm. Meanwhile, TDF measurements were recorded at 293 nm in the same scans without overlap with AFH spectra. Recent analytical chemistry trends were implemented to lessen occupational and environmental perils, using ethanol as a diluting solvent for method optimization and application. Linearity ranges were 5.0-90.0 and 10.0-100.0 ng ml-1 for AFH and TDF, respectively in their raw materials with average % recoveries of 100.44% and 99.73% in raw materials, 100.15% and 100.20% in spiked plasma, and 97.14% and 99.99% in spiked urine. The proposed method was successfully applied to Prostetrol and Starkoprex commercial tablets with no interference with common tablet additives.
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Affiliation(s)
- Heba Samir Elama
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Shereen M Shalan
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Yasser El-Shabrawy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Manal I Eid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Abdallah M Zeid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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6
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Elama HS, shalan SM, El-Shabrawy Y, Eid MI, Zeid AM. A synchronous spectrofluorometric technique for simultaneous detection of alfuzosin and tadalafil: applied to tablets and spiked biological samples. ROYAL SOCIETY OPEN SCIENCE 2022; 9:220330. [PMID: 35845851 PMCID: PMC9277242 DOI: 10.1098/rsos.220330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/14/2022] [Indexed: 05/06/2023]
Abstract
A facile, accurate, eco-friendly and sensitive spectrofluorometric method was evolved to assay alfuzosin hydrochloride (AFH) and tadalafil (TDF) in different matrices. Such a co-administered combination is clinically used for the treatment of lower urinary tract symptoms. Both compounds are characterized by their native fluorescence spectra upon excitation at specific wavelengths. Their characteristic fluorescence spectra were used for sensitive assay of the studied analytes in tablets and human biological samples. The assay principle is based on first-order synchronous spectrofluorometric scan using Δλ = 60 nm in which AFH peaks were recorded at 366 nm. Meanwhile, TDF measurements were recorded at 293 nm in the same scans without overlap with AFH spectra. Recent analytical chemistry trends were implemented to lessen occupational and environmental perils, using ethanol as a diluting solvent for method optimization and application. Linearity ranges were 5.0-90.0 and 10.0-100.0 ng ml-1 for AFH and TDF, respectively in their raw materials with average % recoveries of 100.44% and 99.73% in raw materials, 100.15% and 100.20% in spiked plasma, and 97.14% and 99.99% in spiked urine. The proposed method was successfully applied to Prostetrol and Starkoprex commercial tablets with no interference with common tablet additives.
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Affiliation(s)
- Heba Samir Elama
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Shereen M. shalan
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Yasser El-Shabrawy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Manal I. Eid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Abdallah M. Zeid
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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7
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Kaya SI, Cetinkaya A, Ozkan SA. Carbon Nanomaterial-Based Drug Sensing Platforms Using State-of-the-
Art Electroanalytical Techniques. CURR ANAL CHEM 2022. [DOI: 10.2174/1573411016999200802024629] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Currently, nanotechnology and nanomaterials are considered as the most popular and outstanding
research subjects in scientific fields ranging from environmental studies to drug analysis. Carbon nanomaterials such as
carbon nanotubes, graphene, carbon nanofibers etc. and non-carbon nanomaterials such as quantum dots, metal
nanoparticles, nanorods etc. are widely used in electrochemical drug analysis for sensor development. Main aim of drug
analysis with sensors is developing fast, easy to use and sensitive methods. Electroanalytical techniques such as
voltammetry, potentiometry, amperometry etc. which measure electrical parameters such as current or potential in an
electrochemical cell are considered economical, highly sensitive and versatile techniques.
Methods:
Most recent researches and studies about electrochemical analysis of drugs with carbon-based nanomaterials were
analyzed. Books and review articles about this topic were reviewed.
Results:
The most significant carbon-based nanomaterials and electroanalytical techniques were explained in detail. In
addition to this; recent applications of electrochemical techniques with carbon nanomaterials in drug analysis was expressed
comprehensively. Recent researches about electrochemical applications of carbon-based nanomaterials in drug sensing were
given in a table.
Conclusion:
Nanotechnology provides opportunities to create functional materials, devices and systems using
nanomaterials with advantageous features such as high surface area, improved electrode kinetics and higher catalytic
activity. Electrochemistry is widely used in drug analysis for pharmaceutical and medical purposes. Carbon nanomaterials
based electrochemical sensors are one of the most preferred methods for drug analysis with high sensitivity, low cost and
rapid detection.
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Affiliation(s)
- S. Irem Kaya
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560, Ankara,Turkey
| | - Ahmet Cetinkaya
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560, Ankara,Turkey
| | - Sibel A. Ozkan
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560, Ankara,Turkey
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8
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Tarahomi S, Rounaghi GH, Daneshvar L, Eftekhari M. A Carbon Ionic Liquid Paste Sensor Modified with Lanthanum Nanorods /MWCNTs/Nafion Hybrid Composite for Carbamazepine Screening in Biological and Pharmaceutical Media. ChemistrySelect 2021. [DOI: 10.1002/slct.202102600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Somayeh Tarahomi
- Department of Chemistry Faculty of Sciences Ferdowsi University of Mashhad Mashhad Iran
| | | | - Leili Daneshvar
- Department of Chemistry Faculty of Sciences Ferdowsi University of Mashhad Mashhad Iran
| | - Mohammad Eftekhari
- Department of Chemistry Faculty of Sciences Ferdowsi University of Mashhad Mashhad Iran
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9
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Ferreira PA, de Oliveira FM, de Melo EI, de Carvalho AE, Lucca BG, Ferreira VS, da Silva RAB. Multi sensor compatible 3D-printed electrochemical cell for voltammetric drug screening. Anal Chim Acta 2021; 1169:338568. [PMID: 34088376 DOI: 10.1016/j.aca.2021.338568] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 02/06/2023]
Abstract
3D printing is a hot topic in electroanalytical chemistry, allowing the construction of custom cells and sensors at affordable prices. In this work, we describe a novel small and practical 3D-printed electrochemical cell. The cell's body, manufactured in ABS on a 3D printer, is composed by three parts easily screwed: solution vessel, stick and cover with two embedded 3D-pen-printed carbon black-polylactic acid (CB-PLA) electrodes (counter and pseudo-reference). The cell is compatible with any planar working electrode, in which boron-doped diamond, graphite sheet (GS) and 3D-printed CB-PLA were shown as examples. A new alternative protocol to quickly produce 3D-printed sensors using a 3D pen and other low-cost apparatus is also proposed. The voltammetric performance of each evaluated sensor was carried out in the presence of redox probe ferricyanide and paracetamol as model analyte, and the surfaces were characterized by electrochemical impedance spectroscopy and scanning electrochemical microscopy. To present an analytical application of the 3D-printed cell, low-cost flexible sensors (GS and CB-PLA) were used as integrated platforms for sampling and detection of solid drugs. As a proof-of-concept, traces of drugs with a historic of counterfeit or adulteration (sildenafil citrate, tadalafil, losartan and 17α-ethinylestradiol) were abrasively sampled over the sensor and assembled on 3D-printed cell to perform a fast voltammetric scan in the presence of only 500 μL of electrolyte. This protocol is attractive for pharmaceutical and forensic sciences as a simple preliminary screening method which could identify the presence or absence of the suspicious drug as well as impurities or adulterants. The 3D-printed cell was also used for the determination of 17α-ethinylestradiol in a contraceptive pill to demonstrate a quantitative analysis. The cell is quickly printed (90 min), cheap (US$ 0.30) and requires low electrolyte volumes (0.5-3.0 mL), being suitable to be used in several other electroanalyses, especially for on-site applications.
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Affiliation(s)
- Priscila Alves Ferreira
- Instituto de Química, Universidade Federal de Mato Grosso Do Sul, 79074-460, Campo Grande, MS, Brazil
| | | | - Edmar Isaias de Melo
- Instituto de Química, Universidade Federal de Uberlândia, 38500-000, Monte Carmelo, MG, Brazil
| | - Adriana Evaristo de Carvalho
- Faculdade de Ciências Exatas e Tecnológicas, Universidade Federal da Grande Dourados, 79804-970, Dourados, MS, Brazil
| | - Bruno Gabriel Lucca
- Instituto de Química, Universidade Federal de Mato Grosso Do Sul, 79074-460, Campo Grande, MS, Brazil
| | - Valdir Souza Ferreira
- Instituto de Química, Universidade Federal de Mato Grosso Do Sul, 79074-460, Campo Grande, MS, Brazil
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10
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Selcuk O, Erkmen C, Bozal‐Palabiyik B, Uslu B. Electroanalytical Investigation and Simultaneous Determination of Etodolac and Thiocolchicoside at a Non‐modified Glassy Carbon Electrode in Anionic Surfactant Media. ELECTROANAL 2021. [DOI: 10.1002/elan.202060623] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ozge Selcuk
- Department of Analytical Chemistry, Faculty of Pharmacy Ankara University 06560 Ankara Turkey
| | - Cem Erkmen
- Department of Analytical Chemistry, Faculty of Pharmacy Ankara University 06560 Ankara Turkey
| | - Burcin Bozal‐Palabiyik
- Department of Analytical Chemistry, Faculty of Pharmacy Ankara University 06560 Ankara Turkey
| | - Bengi Uslu
- Department of Analytical Chemistry, Faculty of Pharmacy Ankara University 06560 Ankara Turkey
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11
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Rezk MR, Abdel-Moety EM, Wadie M, Tantawy MA. Stability assessment of tamsulosin and tadalafil co-formulated in capsules by two validated chromatographic methods. J Sep Sci 2020; 44:530-538. [PMID: 33207075 DOI: 10.1002/jssc.202000975] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/19/2020] [Accepted: 11/10/2020] [Indexed: 12/24/2022]
Abstract
The advent of a new pharmaceutical formulation evokes the need for examining the chemical stability of their constituents and establishing proper stability-indicating methods. Herein, the stability of the newly co-formulated Tamsulosin and Tadalafil were examined under different stress conditions. The acidic degradation of Tamsulosin yielded its sulfonated derivative, while Tadalafil was susceptible to both acidic and basic degradation. Two stability-indicating chromatographic methods, namely; high-performance thin-layer chromatography and high-performance liquid chromatography, have been developed. Significant high-performance thin-layer chromatography-fractionation could be achieved by utilizing a stationary phase of silica gel 60 F254 and a mobile phase composed of ethyl acetate/toluene/methanol/ammonia (4:2:4:0.6, by volumes) with densitometric recording at 280 nm over a concentration range of 0.5-25 μg/band for both drugs. The HPLC-separation could be reached on XBridge® C18 column isocraticaly by using a mobile phase having acetonitrile/phosphate buffer, pH 6.0 (45:55, v/v) pumped at a flow rate of 1.7 mL/min and applying diode array ultraviolet-detection at 210 nm over a linearity range of 3-70 μg/mL for each drug. Specificity of the two methods was additionally assured via peak purity assessment. Moreover, the methods were distinctly exploited for evaluating the drugs' stability in accelerated stability-studied samples of Tamplus® capsules.
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Affiliation(s)
- Mamdouh R Rezk
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Cairo, Egypt
| | - Ezzat M Abdel-Moety
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Cairo, Egypt
| | - Mina Wadie
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Cairo, Egypt
| | - Mahmoud A Tantawy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Cairo, Egypt.,Chemistry Department, Faculty of Pharmacy, October 6 University, Giza, Egypt
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12
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Zambianco NA, da Silva VA, Orzari LO, Corat EJ, Zanin HG, Silva TA, Buller GA, Keefe EM, Banks CE, Janegitz BC. Determination of tadalafil in pharmaceutical samples by vertically oriented multi-walled carbon nanotube electrochemical sensing device. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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13
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Abstract
Phthalocyanines are aromatic or macrocyclic organic compounds and attract great attention due to their numerous properties. They have many high-tech applications in different areas of the industry such as dyestuffs, thermal printing screens, photovoltaic solar cells, membrane catalytic reactors, semiconductor materials and gas sensors. In the last decade, electrochemical sensor studies have accelerated with the catalytic lighting. It plays a dominant role in the development and implementation of new generation sensors. The aim of this study is to review the electrochemical methods based on electrode modification with phthalocyanines and to shed light on new application areas of phthalocyanines. The focal point was based on the sensor applications of phthalocyanines in the determination of drugs, pesticides, organic materials and metals etc. by electrochemical methods. Experimental conditions and some validation parameters of the sensor applications such as metal phthalocyanine types, indicator electrodes, selectivity, working ranges, detection limits, and analytical applications were discussed. Consequently, this is the first review dealing with the applications of phthalocyanines in electrochemical sensors for the sensitive determination of analytes in a variety of matrices.
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Affiliation(s)
- Ersin Demir
- Department of Analytical Chemistry, Faculty of Pharmacy, Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey
| | - Hulya Silah
- Department of Chemistry, Faculty of Art & Science, Bilecik Şeyh Edebali University, Bilecik, Turkey
| | - Bengi Uslu
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
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14
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Oliveira FM, Ferreira PA, Neves CG, Rosa TM, Santos WTP, Melo EI, Silva RAB. Fast Screening and Determination of Tadalafil in Pharmaceutics by Batch Injection Analysis (BIA) with Amperometric Detection. ELECTROANAL 2020. [DOI: 10.1002/elan.202060106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Fabiano M. Oliveira
- Instituto de Química Universidade Federal de Uberlândia 38500-000 Monte Carmelo-MG Brazil
| | - Priscila A. Ferreira
- Faculdade de Ciências Exatas e Tecnológicas Universidade Federal da Grande Dourados 79804-970 Dourados-MS Brazil
| | - Camila G. Neves
- Faculdade de Ciências Exatas e Tecnológicas Universidade Federal da Grande Dourados 79804-970 Dourados-MS Brazil
| | - Tamires M. Rosa
- Faculdade de Ciências Exatas e Tecnológicas Universidade Federal da Grande Dourados 79804-970 Dourados-MS Brazil
| | - Wallans T. P. Santos
- Departamento de Farmácia Universidade Federal dos Vales do Jequitinhonha e Mucuri 39100-000 DiamantinaMG Brazil
| | - Edmar I. Melo
- Instituto de Química Universidade Federal de Uberlândia 38500-000 Monte Carmelo-MG Brazil
| | - Rodrigo A. B. Silva
- Instituto de Química Universidade Federal de Uberlândia 38500-000 Monte Carmelo-MG Brazil
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15
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Abstract
Background:
This review investigates the ophthalmic drugs that have been studied with
voltammetry in the web of science database in the last 10 years.
Introduction:
Ophthalmic drugs are used in the diagnosis, evaluation and treatment of various ophthalmological
diseases and conditions. A significant literature has emerged in recent years that investigates
determination of these active compounds via electroanalytical methods, particularly voltammetry. Low
cost, rapid determination, high availability, efficient sensitivity and simple application make voltammetry
one of the most used methods for determining various kinds of drugs including ophthalmic ones.
Methods:
In this particular review, we searched the literature via the web of science database for ophthalmic
drugs which are investigated with voltammetric techniques using the keywords of voltammetry,
electrochemistry, determination and electroanalytical methods.
Results:
We found 33 types of pharmaceuticals in nearly 140 articles. We grouped them clinically into
seven major groups as antibiotics, antivirals, non-steroidal anti-inflammatory drugs, anti-glaucomatous
drugs, steroidal drugs, local anesthetics and miscellaneous. Voltammetric techniques, electrodes, optimum
pHs, peak potentials, limit of detection values, limit of quantification values, linearity ranges,
sample type and interference effects were compared.
Conclusion:
Ophthalmic drugs are widely used in the clinic and it is important to determine trace
amounts of these species analytically. Voltammetry is a preferred method for its ease of use, high sensitivity,
low cost, and high availability for the determination of ophthalmic drugs as well as many other
medical drugs. The low limits of detection values indicate that voltammetry is quite sufficient for determining
ophthalmic drugs in many media such as human serum, urine and ophthalmic eye drops.
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Affiliation(s)
- Onur Inam
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Ersin Demir
- Department of Analytical Chemistry, Faculty of Pharmacy, Afyonkarahisar University of Health Sciences, Afyonkarahisar, 03200, Turkey
| | - Bengi Uslu
- Department of Analytical Chemistry, Ankara University, Faculty of Pharmacy, Ankara, Turkey
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16
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Development of a New Analytical Method for Determination of Veterinary Drug Oxyclozanide by Electrochemical Sensor and Its Application to Pharmaceutical Formulation. CHEMOSENSORS 2020. [DOI: 10.3390/chemosensors8020025] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A novel highly selective, sensitive and simple analytical technique was recommended for the investigation of anthelmintic veterinary drug oxyclozanide based on square wave anodic stripping voltammetry (SWASV) by using a carbon paste electrode (CPE). According to the cyclic voltammetric data, the oxidation and electron transfer processes of oxyclozanide were found as irreversible and adsorption-controlled, respectively. The voltammetric anodic peak response was characterized with respect to pH, accumulation potential, accumulation time, frequency and pulse amplitude, etc. Under these optimized experimental conditions, the anodic peak density of oxyclozanide was linear to oxyclozanide concentrations in the range from 0.058 to 4.00 mg/L. The described electrochemical method was successfully carried out for the oxyclozanide in pharmaceutical formulation and tap water with mean percentage recovery of 101.5 % and 102.2 %, respectively. The results of pharmaceutical formulation studies were statistically compared to the high-performance liquid chromatographic method.
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Demir E, Senocak A, Tassembedo-Koubangoye MF, Demirbas E, Aboul-Eneın HY. Electrochemical Evaluation of the Total Antioxidant Capacity of Yam Food Samples on a Polyglycine-Glassy Carbon Modified Electrode. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411014666180619143729] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background:
The total antioxidant capacity of yam food grown in southern African regions
was investigated by a polyglycine-glassy carbon modified electrode. The modified electrode was fabricated
using glycine solution on glassy carbon electrode by electrodeposition method. The proposed
modified electrode is found to be nearly 3.15-fold more sensitive than the bare electrode. For the
measurement of the total antioxidants of yam, differential pulse stripping voltammetry (DPSV) was
employed with standard quercetin compound.
Methods:
The total antioxidant capacity of yam was deduced by DPSV and cyclic voltammetry (CV)
methods. The basic parameters for the stripping technique such as pH, accumulation time and accumulation
potential were optimized as 20 s, 200 mV and a pH of 3 Britton-Robinson (B-R) buffer solutions
in 0.5 mg quercetin/L, respectively.
Results:
In the optimization condition, the linear working range was determined between 5.0 μg/L and
80.0 µg/L for the quercetin. The detection (LOD) and quantification (LOQ) limits of quercetin were
found to be 0.39 µg/L and 1.39 µg/L on the modified electrode by DPSV, respectively. The procedure
was also applied to natural yam samples and total antioxidant capacity of 0.1 kg of yam was determined
as 96.15 ± 0.85 µg/L of equivalent quercetin at 95% confidence level with the relative standard
deviations of 0.88%.
Conclusion:
Sensitive and selective voltammetric method was developed for the determination of total
antioxidant capacity in yam. Moreover, the modified polyglycine-glassy carbon electrode was constructed
more selectively for quercetin. As a result, a simple, sensitive and rapid new voltammetric
method for the determination of antioxidants has been developed using the modified electrode.
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Affiliation(s)
- Ersin Demir
- Department of Food Engineering, Faculty of Engineering, Okan University, Istanbul, 34959, Turkey
| | - Ahmet Senocak
- Department of Chemistry, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey
| | | | - Erhan Demirbas
- Department of Chemistry, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey
| | - Hassan Y. Aboul-Eneın
- Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Centre, Dokki, Giza 12622, Egypt
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DEMIR E. Sensitive and Selective Pathway of Total Antioxidant Capacity in Commercially Lemon, Watermelon and Mango-pineapple Cold Teas by Square Wave Adsorptive Stripping Voltammetry. GAZI UNIVERSITY JOURNAL OF SCIENCE 2019. [DOI: 10.35378/gujs.490523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Munir A, Bozal-Palabiyik B, Khan A, Shah A, Uslu B. A novel electrochemical method for the detection of oxymetazoline drug based on MWCNTs and TiO2 nanoparticles. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.05.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Atty SA, Sedik GA, Morsy FA, Naguib DM, Zaazaa HE. A novel sensor aluminum silicate modified carbon paste electrode for determination of anti-depressant dothiepin HCl in pharmaceutical formulation and biological fluids. Microchem J 2019. [DOI: 10.1016/j.microc.2019.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Salah A, Hassan M, Liu J, Li M, Bo X, Ndamanisha JC, Guo L. Pt nanoparticles supported on nitrogen-doped porous graphene for sensitive detection of Tadalafil. J Colloid Interface Sci 2018; 512:379-388. [DOI: 10.1016/j.jcis.2017.10.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/02/2017] [Accepted: 10/06/2017] [Indexed: 12/14/2022]
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Kurbanoglu S, Ozkan SA. Electrochemical carbon based nanosensors: A promising tool in pharmaceutical and biomedical analysis. J Pharm Biomed Anal 2017; 147:439-457. [PMID: 28780997 DOI: 10.1016/j.jpba.2017.06.062] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 06/22/2017] [Accepted: 06/27/2017] [Indexed: 12/19/2022]
Abstract
Nanotechnology has become very popular in the sensor fields in recent times. It is thought that the utilization of such technologies, as well as the use of nanosized materials, could well have beneficial effects for the performance of sensors. Nano-sized materials have been shown to have a number of novel and interesting physical and chemical properties. Low-dimensional nanometer-sized materials and systems have defined a new research area in condensed-matter physics within past decades. Apart from the aforesaid categories of materials, there exist various materials of different types for fabricating nanosensors. Carbon is called as a unique element, due to its magnificent applications in many areas. Carbon is an astonishing element that can be found many forms including graphite, diamond, fullerenes, and graphene. This review provides an overview of some of the important and recent developments brought about by the application of carbon based nanostructures to nanotechnology for both chemical and biological sensor development and their application in pharmaceutical and biomedical area.
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Affiliation(s)
- Sevinc Kurbanoglu
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06100, Tandogan, Ankara, Turkey
| | - Sibel A Ozkan
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06100, Tandogan, Ankara, Turkey.
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A comparison study of macrocyclic hosts functionalized reduced graphene oxide for electrochemical recognition of tadalafil. Biosens Bioelectron 2017; 89:361-369. [DOI: 10.1016/j.bios.2016.07.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/03/2016] [Accepted: 07/07/2016] [Indexed: 01/28/2023]
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Guziejewski D, Smarzewska S, Metelka R, Nosal-Wiercińska A, Ciesielski W. Improved electroanalytical characteristics for flumetralin determination in the presence of surface active compound. MONATSHEFTE FUR CHEMIE 2017; 148:555-562. [PMID: 28344364 PMCID: PMC5346150 DOI: 10.1007/s00706-017-1918-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 01/10/2017] [Indexed: 12/02/2022]
Abstract
ABSTRACT The use of square wave voltammetry (SWV) and square wave adsorptive stripping voltammetry (SWAdSV) in conjunction with a cyclic renewable silver amalgam film electrode for the determination of flumetralin is presented. Poor separation of two overlapped reduction peaks is significantly improved when hexadecyltrimethylammonium bromide is used as a component of the supporting electrolyte solution (together with BR buffer pH 9.5). The SW technique parameters were investigated and found optimal as follows: frequency 50 Hz, amplitude 40 mV, and step potential 5 mV. Accumulation time and potential were studied to select the optimal conditions in adsorptive voltammetry. The analytical curve was linear for the flumetralin concentration range from 1.0 × 10-6 to 1.0 × 10-5 mol dm-3 and from 5.0 × 10-9 to 1.0 × 10-7 mol dm-3 for SWV and SWAdSV, respectively. Detection limit of 6.5 × 10-10 mol dm-3 was calculated for accumulation time 60 s at -0.2 V. The repeatability of the method was determined at a flumetralin concentration level equal to 5.0 × 10-9 mol dm-3 and expressed as %RSD = 5.0% (n = 6). The proposed method was applied and validated successfully by studying the recovery of herbicide content in spiked environmental samples. GRAPHICAL ABSTRACT
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Affiliation(s)
- Dariusz Guziejewski
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, 92-236 Łódź, Poland
| | - Sylwia Smarzewska
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, 92-236 Łódź, Poland
| | - Radovan Metelka
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic
| | - Agnieszka Nosal-Wiercińska
- Faculty of Chemistry, Department of Analytical Chemistry and Instrumental Analysis, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - Witold Ciesielski
- Faculty of Chemistry, Department of Inorganic and Analytical Chemistry, University of Lodz, 92-236 Łódź, Poland
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Nayak DS, Shetti NP. Electrochemical oxidation of provitamin B5, d-panthenol and its analysis in spiked human urine. J Anal Sci Technol 2016. [DOI: 10.1186/s40543-016-0092-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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26
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Ozkan SA, Uslu B. From mercury to nanosensors: Past, present and the future perspective of electrochemistry in pharmaceutical and biomedical analysis. J Pharm Biomed Anal 2016; 130:126-140. [PMID: 27210510 DOI: 10.1016/j.jpba.2016.05.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 05/02/2016] [Accepted: 05/03/2016] [Indexed: 02/07/2023]
Abstract
Polarography was the first developed automated method of voltage-controlled electrolysis with dropping mercury electrode (DME). Then, hanging mercury drop and static mercury drop electrodes were added as an alternative indicator electrode. In this way, polarography turned formally into voltammetry with mercury electrodes in the electroreduction way. Solid electrodes such as noble metal and carbon based electrodes can be used for the investigation of the compounds for both oxidation and reduction directions, which is called voltammetry. The voltammetric and polarographic techniques are more sensitive, reproducible, and easily used electroanalytical methods that can be alternative to more frequently used separation and spectrometric methods. Furthermore, in some cases there is a relationship between voltammetry and pharmaceutical samples, and the knowledge of the mechanism of their electrode reactions can give a useful clue in elucidation of the mechanism of their interaction with living cells. The voltammetric and polarographic analysis of drugs in pharmaceutical preparations are by far the most common use of electrochemistry for analytical pharmaceutical problems. Recent trends and challenges in the electrochemical methods for the detection of DNA hybridization and pathogens are available. Low cost, small sample requirement and possibility of miniaturization justifies their increasing development.
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Affiliation(s)
- Sibel A Ozkan
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06100 Ankara, Turkey.
| | - Bengi Uslu
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06100 Ankara, Turkey
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Rahi A, Karimian K, Heli H. Nanostructured materials in electroanalysis of pharmaceuticals. Anal Biochem 2016; 497:39-47. [PMID: 26751130 DOI: 10.1016/j.ab.2015.12.018] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 12/24/2015] [Accepted: 12/28/2015] [Indexed: 01/21/2023]
Abstract
Basic strategies and recent developments for the enhancement of the sensory performance of nanostructures in the electroanalysis of pharmaceuticals are reviewed. A discussion of the properties of nanostructures and their application as modified electrodes for drug assays is presented. The electrocatalytic effect of nanostructured materials and their application in determining low levels of drugs in pharmaceutical forms and biofluids are discussed.
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Affiliation(s)
- A Rahi
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - K Karimian
- Andisheh Pharma Sciences R&D Inc., Yousefabad, Jahanarar Avenue, Tehran, Iran
| | - H Heli
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Nanomedicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
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Abu El-Enin MAB, Al-Ghaffar Hammouda MESA, El-Sherbiny DT, El-Wasseef DR, El-Ashry SM. Validated spectrofluorimetric method for determination of two phosphodiesterase inhibitors tadalafil and vardenafil in pharmaceutical preparations and spiked human plasma. LUMINESCENCE 2015; 31:173-8. [PMID: 26019060 DOI: 10.1002/bio.2941] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 04/20/2015] [Accepted: 04/21/2015] [Indexed: 11/09/2022]
Abstract
A valid, sensitive and rapid spectrofluorimetric method has been developed and validated for determination of both tadalafil (TAD) and vardenafil (VAR) either in their pure form, in their tablet dosage forms or spiked in human plasma. This method is based on measurement of the native fluorescence of both drugs in acetonitrile at λem 330 and 470 nm after excitation at 280 and 275 nm for tadalafil and vardenafil, respectively. Linear relationships were obtained over the concentration range 4-40 and 10-250 ng/mL with a minimum detection of 1 and 3 ng/mL for tadalafil and vardenafil, respectively. Various experimental parameters affecting the fluorescence intensity were carefully studied and optimized. The developed method was applied successfully for the determination of tadalafil and vardenafil in bulk drugs and tablet dosage forms. Moreover, the high sensitivity of the proposed method permitted their determination in spiked human plasma. The developed method was validated in terms of specificity, linearity, lower limit of quantification (LOQ), lower limit of detection (LOD), precision and accuracy. The mean recoveries of the analytes in pharmaceutical preparations were in agreement with those obtained from the comparison methods, as revealed by statistical analysis of the obtained results using Student's t-test and the variance ratio F-test.
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Affiliation(s)
| | | | - Dina Tawfik El-Sherbiny
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, 35516, Mansoura, Egypt
| | - Dalia Rashad El-Wasseef
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, 35516, Mansoura, Egypt
| | - Saadia Mahmoud El-Ashry
- Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, 35516, Mansoura, Egypt
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