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Dedić M, Omeragić E, Imamović B, Bilajac E, Mahmutović L, Glamočlija U, Bečić E. HPLC method for the determination of thymoquinone in growth cell medium. Technol Health Care 2024:THC231432. [PMID: 38306072 DOI: 10.3233/thc-231432] [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: 02/03/2024]
Abstract
BACKGROUND Preclinical drug testing requires in vitro and in vivo assessments that are vital for studying drug pharmacokinetics and toxicity. Distinct factors that play an important role in drug screening, such as hydrophobicity, solubility of the substance and serum protein binding can be challenging by inducing result inconsistencies. Hence, establishing accurate methods to quantify drug concentrations in cell cultures becomes pivotal for reliable and reproducible results important for in vivo dosing predictions. OBJECTIVE This research focuses on developing an optimized analytical approach via high-pressure liquid chromatography (HPLC) to determine thymoquinone (TQ) levels in monolayer cell cultures. METHODS The method's validation adheres to the International Council for Harmonisation (ICH) guideline M10, ensuring its acceptance and applicability. Using an HPLC system with a Diode Array Detector (DAD), the study fine-tuned various parameters to achieve an efficient separation of TQ. Validation covered specificity, sensitivity, matrix effects, linearity, precision, and accuracy, alongside assessing TQ stability in RPMI-1640 medium. RESULTS The HPLC method exhibited remarkable TQ specificity, free from interfering peaks at the analyte retention. Sensitivity analysis at the lower limit of quantification (LLOQ) revealed 5.68% %CV and 98.37% % mean accuracy. Matrix effect evaluation showcased accuracy within 85-115%. Linearity spanned in the concentration range of 2-10 μM with a correlation coefficient (r2) of 0.9993. Precision and accuracy were aligned with acceptance criteria. The proposed method was found to be greener in terms of usage of persistent, bioaccumulative, and toxic chemicals and solvents, corrosive samples, and waste production. CONCLUSION The developed HPLC-DAD method emerges as specific, accurate, sensitive, and reliable for TQ determination in cell cultures. It ensures robust TQ quantification, enhancing precise in vitro assessments and dependable dosing predictions for in vivo studies. Further research is advocated to investigate TQ's stability across diverse environmental conditions.
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Affiliation(s)
- Mirza Dedić
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Elma Omeragić
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Belma Imamović
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Esma Bilajac
- International University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Lejla Mahmutović
- International University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Una Glamočlija
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
- School of Medicine, University of Mostar, Mostar, Bosnia and Herzegovina
- Bosnalijek JSC, Sarajevo, Bosnia and Herzegovina
| | - Ervina Bečić
- Faculty of Pharmacy, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
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Pegu R, Paul S, Bhattacharyya P, Prakash A, Bhattacharya SS. Exorbitant signatures of pesticides and pharmaceuticals in municipal solid wastes (MSWs): Novel insights through risk analysis, dissolution dynamics, and model-based source identification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:165855. [PMID: 37516171 DOI: 10.1016/j.scitotenv.2023.165855] [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: 05/30/2023] [Revised: 07/17/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023]
Abstract
Studies on the occurrence and fates of emerging organic micropollutants (EOMPs) like pharmaceuticals and pesticides in MSWs are scarce in the literature. Therefore, MSWs were sampled from 20 Indian landfills and characterized for five widely consumed EOMPs (chlorpyrifos, cypermethrin, carbofuran, carbamazepine, and sodium diclofenac), physicochemical, and biological properties. The pesticide (median: 0.17-0.44 mg kg-1) and pharmaceutical (median: 0.20-0.26 mg kg-1) concentrations significantly fluctuated based on landfill localities. Eventually, principal component and multi-factor (MFA) models demonstrated close interactions of EOMPs with biological (microbial biomass and humification rates) and chemical (N, P, K, Ca, S, etc.) properties of MSWs. At the same time, the MFA resolved that EOMPs' fates in MSWs significantly differ from bigger cosmopolitan cities to smaller rural townships. Correspondingly, the concentration-driven ecological risks were high in 15 MSWs with EOMP-toxicity ranks of diclofenac > carbofuran = chlorpyrifos > cypermethrin > carbamazepine. The EOMPs' dissolution dynamics and source apportionments were evaluated using the positive matrix factorization (PMF) model for the first time on experimental data, extracting four anthropogenic sources (households, heterogeneous business centers, agricultural, and open drains). The most significant contribution of EOMPs to MSWs was due to heterogeneous business activity. Notably, the aging of soluble chemical fractions seems to influence the source characteristics of EOMPs strongly.
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Affiliation(s)
- Ratul Pegu
- Soil and Agro Bio-engineering Laboratory, Department of Environmental Science, Tezpur Central University, Napaam, Tezpur 784028, Assam, India
| | - Sarmistha Paul
- Soil and Agro Bio-engineering Laboratory, Department of Environmental Science, Tezpur Central University, Napaam, Tezpur 784028, Assam, India; State Pollution Control Board, Govt. of Assam, Guwahati-781021, India
| | - Pradip Bhattacharyya
- Agricultural and Ecological Research Unit, Indian Statistical Institute, Giridih, Jharkhand 815301, India
| | - Amit Prakash
- Environmental Modeling Laboratory, Department of Environmental Science, Tezpur Central University, Napaam, Tezpur 784028, Assam, India.
| | - Satya Sundar Bhattacharya
- Soil and Agro Bio-engineering Laboratory, Department of Environmental Science, Tezpur Central University, Napaam, Tezpur 784028, Assam, India.
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Pawar G, Wu F, Zhao L, Fang L, Burckart GJ, Feng K, Mousa YM, Al Shoyaib A, Jones MC, Batchelor HK. Integration of Biorelevant Pediatric Dissolution Methodology into PBPK Modeling to Predict In Vivo Performance and Bioequivalence of Generic Drugs in Pediatric Populations: a Carbamazepine Case Study. AAPS J 2023; 25:67. [PMID: 37386339 DOI: 10.1208/s12248-023-00826-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 05/25/2023] [Indexed: 07/01/2023] Open
Abstract
This study investigated the impact of gastro-intestinal fluid volume and bile salt (BS) concentration on the dissolution of carbamazepine (CBZ) immediate release (IR) 100 mg tablets and to integrate these in vitro biorelevant dissolution profiles into physiologically based pharmacokinetic modelling (PBPK) in pediatric and adult populations to determine the biopredictive dissolution profile. Dissolution profiles of CBZ IR tablets (100 mg) were generated in 50-900 mL biorelevant adult fasted state simulated gastric and intestinal fluid (Ad-FaSSGF and Ad-FaSSIF), also in three alternative compositions of biorelevant pediatric FaSSGF and FaSSIF medias at 200 mL. This study found that CBZ dissolution was poorly sensitive to changes in the composition of the biorelevant media, where dissimilar dissolution (F2 = 46.2) was only observed when the BS concentration was changed from 3000 to 89 μM (Ad-FaSSIF vs Ped-FaSSIF 50% 14 BS). PBPK modeling demonstrated the most predictive dissolution volume and media composition to forecast the PK was 500 mL of Ad-FaSSGF/Ad-FaSSIF media for adults and 200 mL Ped-FaSSGF/FaSSIF media for pediatrics. A virtual bioequivalence simulation was conducted by using Ad-FaSSGF and/or Ad-FaSSIF 500 mL or Ped-FaSSGF and/or Ped-FaSSIF 200 mL dissolution data for CBZ 100 mg (reference and generic test) IR product. The CBZ PBPK models showed bioequivalence of the product. This study demonstrates that the integration of biorelevant dissolution data can predict the PK profile of a poorly soluble drug in both populations. Further work using more pediatric drug products is needed to verify biorelevant dissolution data to predict the in vivo performance in pediatrics.
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Affiliation(s)
- Gopal Pawar
- School of Pharmacy, Institute of Clinical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Fang Wu
- Division of Quantitative Methods and Modelling, Office of Research and Standard, Office of Generic Drug Products, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, 20993, USA.
| | - Liang Zhao
- Division of Quantitative Methods and Modelling, Office of Research and Standard, Office of Generic Drug Products, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Lanyan Fang
- Division of Quantitative Methods and Modelling, Office of Research and Standard, Office of Generic Drug Products, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Gilbert J Burckart
- Office of Clinical Pharmacology, Office of Translational Science, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Kairui Feng
- Division of Quantitative Methods and Modelling, Office of Research and Standard, Office of Generic Drug Products, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Youssef M Mousa
- Division of Quantitative Methods and Modelling, Office of Research and Standard, Office of Generic Drug Products, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Abdullah Al Shoyaib
- Division of Quantitative Methods and Modelling, Office of Research and Standard, Office of Generic Drug Products, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Marie-Christine Jones
- School of Pharmacy, Institute of Clinical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Hannah K Batchelor
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK.
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Koczorowski T, Wicher B, Krakowiak R, Mylkie K, Marusiak A, Tykarska E, Ziegler-Borowska M. Photocatalytic Activity of Sulfanyl Porphyrazine/Titanium Dioxide Nanocomposites in Degradation of Organic Pollutants. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7264. [PMID: 36295343 PMCID: PMC9611658 DOI: 10.3390/ma15207264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/12/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
Magnesium(II) sulfanyl porphyrazine with peripheral morpholinethoxy substituents was embedded on the surface of titanium(IV) dioxide nanoparticles. The obtained nanocomposites were characterized with the use of particle size and distribution (NTA analysis), electron microscopy (SEM), thermal analysis (TGA), FTIR-ATR spectroscopy, and X-ray powder diffraction (XRD). The measured particle size of the obtained material was 327.4 ± 15.5 nm. Analysis with XRD showed no visible changes in the crystallinity of the material after deposition of porphyrazine on the TiO2 surface. However, SEM images revealed noticeable changes in the morphology of the obtained hybrid material: higher aggregation and less ordered structure of the aggregates. The TGA analysis revealed the lost 3.6% (0.4 mg) of the mass of obtained material in the range 250-550 °C. In the FTIR-ATR analysis, C-H stretching vibratins in the range of 3000-2800 cm-1, originating from porphyrazine moieties, were detected. The photocatalytic applicability of the nanomaterial was assessed in photodegradation studies of methylene blue and bisphenol A as reference environmental pollutants. In addition, the photocatalytic degradation of carbamazepine with porphyrazine/TiO2 hybrids as photocatalysts was studied, accompanied by an HPLC chromatography assessment of photodegradation. In total, 43% of the initial concentration was achieved in the case of bisphenol A, after 4 h of irradiation, whereas 57% was achieved in the case of carbamazepine. In each photodegradation reaction, the activity of the obtained photocatalytic nanomaterial was proved with almost linear degradation. The photodegradation reaction rate constants were calculated, and revealed 5.75 × 10-5 s-1 for bisphenol A and 5.66 × 10-5 s-1 for carbamazepine.
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Affiliation(s)
- Tomasz Koczorowski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Barbara Wicher
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Rafal Krakowiak
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Kinga Mylkie
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - Aleksandra Marusiak
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Ewa Tykarska
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznan, Poland
| | - Marta Ziegler-Borowska
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
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Abstract
The present work aimed to re-assess the bioavailability enhancement potential of fulvic acid (FA). Carbamazepine (CBZ) and peat were used as a model drug and FA source, respectively. Our group has already evaluated the bioavailability enhancement potential of a less commercially viable source of FA, i.e., shilajit. In the present work, the phase solubility of CBZ was analyzed with varying concentrations of peat-sourced FA (2–12% w/v). The prepared complex (CBZ-FA) was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). Dissolution, pharmacokinetic, and pharmacodynamic studies were also carried out. The results showed the presence of an interaction between the drug and FA within the complex, which led to 98.99 ± 2.0% enhancement in drug solubility. The results also showed 79.23 ± 2.1% dissolution of the complexed drug over 60 min and 69.32 ± 2.2% permeation from the intestinal gut sac over 90 min, which led to a significant enhancement of bioavailability and a reduction in the duration of epileptic seizures. Thus, this study re-authenticates our earlier results and suggests switching the FA source (shilajit to peat) for commercial product development.
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Shi M, Zheng X, Lu D, Duan X, Wang Y, Liu Y, Xue H, Yin L. Ultrafast and high-throughput quantitative analysis of carbamazepine in human plasma by direct analysis in real time tandem mass spectrometry coupled with solid phase extraction to eliminate matrix effects. J Pharm Biomed Anal 2022; 214:114751. [DOI: 10.1016/j.jpba.2022.114751] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/12/2022] [Accepted: 04/01/2022] [Indexed: 12/17/2022]
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Abdalla KF, Osman MA, Nouh AT, El Maghraby GM. Microsponges for controlled release and enhanced oral bioavailability of carbamazepine. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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A Pharmacokinetic Evaluation of a Pectin-Based Oral Multiparticulate Matrix Carrier of Carbamazepine. Adv Pharmacol Pharm Sci 2021; 2021:5527452. [PMID: 34286279 PMCID: PMC8275414 DOI: 10.1155/2021/5527452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 04/19/2021] [Accepted: 06/23/2021] [Indexed: 12/16/2022] Open
Abstract
Background Carbamazepine is a drug used in the treatment of neurological disorders such as epilepsy. However, due to its erratic absorption, oral bioavailability is often poor. There is, therefore, the need to develop alternative formulations for carbamazepine with better pharmacokinetic characteristics. Aim The aim of this study was to formulate an oral modified-release multiparticulate matrix of carbamazepine from cocoa pod husk (CPH) pectin and evaluate the pharmacokinetic profile of this formulation using in vitro and in vivo models. Methods CPH pectin was extracted from cocoa pod husks with hot aqueous and citric acid solutions. Oral multiparticulate carbamazepine matrices were formulated from CPH pectin cross-linked with calcium. The formulation was evaluated for carbamazepine content and release profile in vitro. For in vivo pharmacokinetic profile estimation, rats were put into 4 groups of 5 animals each to receive carbamazepine multiparticulate matrix formulations A and B, carbamazepine powder, and Tegretol CR®. Animals in each group received 200 mg/kg of each drug via the oral route. Maximum plasma concentration (Cmax), area under the concentration-time curve (AUC), elimination rate constant (Ke), and terminal half-life (t1/2) of the formulations were estimated by noncompartmental analysis. Results The pectin extraction from fresh cocoa pod husks using hot aqueous and citric acid solutions gave pectin yields of 9.63% and 11.54%, respectively. The drug content of carbamazepine in CPH pectin formulations A and B was 95% and 96%, respectively. There was controlled and sustained release of carbamazepine for both formulations A and B in vitro. AUC0⟶36 (176.20 ± 7.97 µg.h/mL), Cmax (8.45 ± 0.71 μg/mL), Tmax (12 ± 1.28 h), and t1/2 (13.75 ± 3.28 h) of formulation A showed a moderately enhanced and comparable pharmacokinetic profile to Tegretol CR® (AUC0⟶36: 155 ± 7.15 µg.h/mL, Cmax: 8.24 ± 0.45 μg/mL, Tmax: 8.0 ± 2.23 h, and t1/2: 13.51 ± 2.87 h). Conclusion Findings from the study suggest that formulations of CPH pectin had the potential to control and maintain therapeutic concentrations of carbamazepine in circulation over a period of time in the rat model.
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Opuni KFM, Boadu JA, Amponsah SK, Okai CA. High performance liquid chromatography: A versatile tool for assaying antiepileptic drugs in biological matrices. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1179:122750. [PMID: 34237479 DOI: 10.1016/j.jchromb.2021.122750] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 04/18/2021] [Accepted: 04/27/2021] [Indexed: 10/21/2022]
Abstract
Epilepsy is a recurrent long-term illness occurring in approximately 1.0% of the world's population. There are currently about 29 approved antiepileptic drugs for the management of epilepsy. Due to narrow therapeutic indices of most antiepileptic drugs, clinical pharmacokinetic characteristics and therapeutic drug monitoring of these drugs are imperative. The objectives of this review were to identify common chromatographic principles, requirements and/or conditions for high-performance liquid chromatography as applied to assay of antiepileptic drugs in biological matrices. The review was conducted using 66 peer reviewed articles (1990 to 2020) from 29 journals that were sought via PubMed, Science Direct and Google Scholar. In all, 29 antiepileptic drugs were assayed from 6 different biological matrices. Forty-three of the reviewed articles estimated the concentration of only one antiepileptic drug, whilst 23 articles focused on simultaneous determination of two or more antiepileptic drugs. Thirty-four, 20, and 14 articles reported using liquid-liquid extraction, protein precipitation, or solid phase extraction for sample clean up, respectively. The ratio of reversed-phase to normal phase, LC-UV to LC-MS and isocratic elution to gradient elution were 61:3, 43:7 and 55:11, respectively. With the exception of one article the reported recoveries ranged from 60.3% to 109.6%. It is noteworthy, that, the performance metrics of high-performance liquid chromatography are better compared to other assays of antiepileptic drugs in biological matrices. This review describes the relevant liquid chromatographic method conditions over the past 30 years for the analysis of this class of drugs, which provides a basis for further method development and optimization.
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Affiliation(s)
- Kwabena F M Opuni
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, Ghana.
| | - Joseph A Boadu
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Ghana, Ghana
| | - Seth K Amponsah
- Department of Medical Pharmacology, University of Ghana Medical School, University of Ghana, Ghana
| | - Charles A Okai
- Department of Laboratory Technology, Faculty of Health Sciences, Kumasi Technical University, Ghana
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Palakeeti B, Reddy KV, Gobi KV, Rao PN, Chinta JP. Simple and efficient method for the quantification of antiepileptic drugs in human plasma by using magnetic graphene oxide-β-cyclodextrin composite as a sorbent. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00239-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
In recent days, solid-phase extraction methods are widely utilized for the extraction of drug molecules from plasma samples due to their easy operating procedures and low matrix effect. The trace-level solid-phase extraction of three structurally related antiepileptic drugs brivaracetam (BVC), eslicarbazepine acetate (ESL), and carbamazepine (CBZ) was investigated by using a magnetic porous material graphene oxide-β-cyclodextrin (MGO-CD). Morphology, magnetic properties, and structure of the synthesized MGO-CD were characterized by using FT-IR, SEM, XRD, and VSM.
Results
Solid-phase extraction (SPE) methods were used to extract the analytes from human plasma. Different extraction solvents such as acetonitrile (ACN), methanol (MeOH), acetone, chloroform (CHCl3), tertiary butyl diethyl ether (TBDE), and ethyl acetate (EtOAc) with variable polarities were used to extract drug molecules from MGO-CD. The linearity analysis showed good correlation coefficient values (R2) of 0.9989, 0.9995, and 0.9982 for BVC, ESL, and CBZ respectively. The LOD and LOQ ranges were found to be 6.14–28.32 ng mL−1 and 20.45–94.31 ng mL−1 respectively.
Conclusion
The high accuracy and precision made the developed HPLC method with MGO-CD a suitable alternative for the bioequivalence study of BVC, ESL, and CBZ in human plasma. This developed HPLC-UV method has good efficiency for recoveries and good linearity and is simple to handle. And also, it gave low retention time for the three antiepileptic drugs within 8 min. It provides high efficiency for the extraction of trace-level substances from human plasma.
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Liu S, Li D, Shi D, Zhang G, Luo X, Xu Q, Zhao L, Guo J, Yan G. Construction of a room-temperature phosphorescent quantum dot probe and quantitative detection of thyroxine and carbamazepine. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129582] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Mansour NM, El-Sherbiny DT, Ibrahim FA, El Subbagh HI. Development of an Inexpensive, sensitive and green HPLC method for the simultaneous determination of brivaracetam, piracetam and carbamazepine; application to pharmaceuticals and human plasma. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105863] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Validation and eco-scale assessment of stability-indicating HPTLC method for quantitative analysis of carbamazepine and its degradation product, iminostilbene, in pure forms, pharmaceutical preparations, and spiked human plasma. JPC-J PLANAR CHROMAT 2020. [DOI: 10.1007/s00764-020-00023-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Dey S, Basak S, De A, Alam SP, Hossain T, Saha A, Ghosh M, Karmakar T. Simultaneous Pharmacokinetics Estimation of Nateglinide and Pioglitazone by RP-HPLC: Computational Study to Unlock the Synergism. J Chromatogr Sci 2020; 58:309-322. [PMID: 31836899 DOI: 10.1093/chromsci/bmz116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 11/12/2019] [Accepted: 11/23/2019] [Indexed: 11/14/2022]
Abstract
Nateglinide (NAT) and Pioglitazone (PIO) are an antidiabetic drugs combination and currently under clinical trial in countries like Japan. In this study, an alternative, a simple, sensitive high-performance liquid chromatography method has been developed (limit of detection: 15 ng/mL and limit of quantification: 50 ng/mL) for simultaneous estimation of this drug combination in rat plasma. Most remarkably, bioavailability of NAT has been increased markedly on coadministration with PIO, than when it was administered alone. Thus, PIO is assumed to retard the catabolism of NAT by inhibiting metabolic liver-microsomal enzyme, especially CYP2C9. Using a Waters Nova-Pak C 18 column (150 × 3.9 mm, 4 μm) and a mobile phase of acetonitrile: 10 mM KH2PO4 (60: 40, V/V (volume by volume)) pH 3.5, the analysis was performed at 210 nm with a flow rate of 1.5 mL/min. In silico docking via molecular dynamics simulation revealed that NAT-CYP2C9 binding affinity may be reduced after PIO attachment, presumably due to the binding site overlapping of the two drugs. Thus, it has been proposed that NAT and PIO may be an efficient synergistic fixed dose combination against diabetes mellitus, and the above method can foster a simple but highly sensitive bioanalytical estimation for routine analysis.
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Affiliation(s)
- Suddhasattya Dey
- Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Bidhan Nagar, Durgapur, West Bengal 713206, India
| | - Souvik Basak
- Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Bidhan Nagar, Durgapur, West Bengal 713206, India
| | - Anjan De
- Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Bidhan Nagar, Durgapur, West Bengal 713206, India
| | - Shahreja Parvez Alam
- Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Bidhan Nagar, Durgapur, West Bengal 713206, India
| | - Tabassum Hossain
- Department of Chemical Technology, University of Calcutta, Kolkata, West Bengal 700009, India
| | - Achintya Saha
- Department of Chemical Technology, University of Calcutta, Kolkata, West Bengal 700009, India
| | - Manik Ghosh
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
| | - Tanushree Karmakar
- Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Bidhan Nagar, Durgapur, West Bengal 713206, India
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khan R, Jain P, Aqil M, Agarwal SP, Mirza MA, Iqbal Z. Pharmacokinetic evaluation of fulvic acid-ketoconazole complexes: A validation and line extension study. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sita V G, Vavia P. Bromocriptine Nanoemulsion-Loaded Transdermal Gel: Optimization Using Factorial Design, In Vitro and In Vivo Evaluation. AAPS PharmSciTech 2020; 21:80. [PMID: 31975311 DOI: 10.1208/s12249-020-1620-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 12/26/2019] [Indexed: 02/07/2023] Open
Abstract
Bromocriptine mesylate (BCM), a dopaminergic agonist administered orally, exhibits retarded bioavailability owing to poor absorption and extreme first-pass metabolism. The objective of the current study was to develop, characterize, and statistically optimize BCM nanoemulsion (BCM-NE) loaded into a gel (BCM-NE gel) to evaluate its potential for improved permeation of BCM through the transdermal route, thereby improving its pharmacokinetic profile. BCM-NE was prepared by o/w spontaneous emulsification method and the effects of different formulation variables on the critical attributes of NE like globule size were investigated by implementing factorial design. The optimized formulation exhibited a mean globule size of 160 ± 6.5 nm, zeta potential of - 20.4 ± 1.23 mV, and drug content of 99.45 ± 1.9%. Ex vivo permeation studies across rat skin exhibited a significant enhancement in permeation, i.e., enhancement ratio (ER) of ~ 7.4 and 5.86 for BCM-NE and BCM-NE gel, respectively, when compared with aqueous BCM suspension gel. In vivo pharmacokinetic studies performed in rats demonstrated a higher and prolonged drug release of BCM from BCM-NE gel when compared to oral aqueous BCM suspension. The AUC0-t for BCM-NE gel and BCM suspension was found to be 562.54 ± 77.55 and 204.96 ± 51.93 ng/ml h, respectively. The relative bioavailability (%F) of BCM was shown to be enhanced 274% by BCM-NE gel. Histopathological studies demonstrated the safety and biocompatibility of the developed system. All the above results proved that the BCM-NE gel could be a superior and patient-compliant alternative to oral delivery in the management of PD.
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Bakhshi F, Molavi O, Rashidi MR, Shayanfar A, Amini H. Developing a high-performance liquid chromatography fast and accurate method for quantification of silibinin. BMC Res Notes 2019; 12:743. [PMID: 31727143 PMCID: PMC6854794 DOI: 10.1186/s13104-019-4774-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 10/31/2019] [Indexed: 02/08/2023] Open
Abstract
Objective Silibinin is an antioxidant agent and is shown to have anticancer effects in different cancers including lung, breast, colorectal, liver, prostate, and kidney. There are challenges in the clinical use of silibinin. The main limitation is low solubility, poor oral absorption, and extensive hepatic metabolism. We aim to develop a High-Performance Liquid Chromatography (HPLC) sensitive method for quantification of silibinin in aqueous samples to quantify its concentration in new formulations. A reverse-phase high-performance liquid chromatography (RP-HPLC) composed of C18 column as stationary phase and the mixture of methanol (90%) and water (10%) as mobile phase. The developed method was validated based on the established guidelines. Results The retention time for silibinin was seen in 2.97 min after injection. The calibration curve was drawn and the established method demonstrated a linear ranged from 10 to 100 µg/ml, with a correlation coefficient of 0.996. The sensitivity of the developed method was 10 µg/ml. The accuracy calculated in the range of 88–105.9% and the precision (as relative standard deviation) was between 2.7 and 10.9%. These results demonstrate that the developed method can be a fast and accurate method for quantification of silibinin in aqueous samples.
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Affiliation(s)
- Faezeh Bakhshi
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ommoleila Molavi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Pharmaceutical Biotechnology Department, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Reza Rashidi
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Shayanfar
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Amini
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran. .,Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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18
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Sedaghat S, Molavi O, Faridi A, Shayanfar A, Rashidi MR. Development of an HPLC-UV Method for Quantification of Stattic. CURR PHARM ANAL 2019. [DOI: 10.2174/1573412914666180523092957] [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:
Signal transducer and activator of transcription 3 (STAT3), an oncogenic protein
found constitutively active in many types of human malignancies, is considered to be a promising
target for cancer therapy.
Objective:
In this study for the first time, a simple and accurate method has been developed for the determination
of a STAT3 dimerization inhibitor called stattic in aqueous and plasma samples.
Methods:
A reverse-phase high-performance liquid chromatography (RP-HPLC) composed of C18
column as stationary phase, and the mixture of acetonitrile (60%) and water (40%) as mobile phase with
a UV detection at 215 nm were applied for quantification of stattic. The developed method was validated
by Food and Drug Administration (FDA) guideline.
Results:
The method provided a linear range between 1-40 and 2.5-40 µg mL-1 for aqueous and plasma
samples, respectively, with a correlation coefficient of 0.999. The accuracy (as recovery) of the developed
method was found to be between 95-105% for aqueous medium and 85-115% for plasma samples.
The precision (as relative standard deviation) for aqueous and plasma samples was less than 6% and
15%, respectively. The sensitivity of the developed method based on FDA guideline was 1 µg mL-1 for
aqueous and 2.5 µg mL-1 for plasma samples.
Conclusion:
These results show that the established method is a fast and accurate quantification for
stattic in aqueous and plasma samples.
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Affiliation(s)
- Soheil Sedaghat
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ommoleila Molavi
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Akram Faridi
- Biotechnology Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Shayanfar
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Reza Rashidi
- Research Center for Pharmaceutical Nanotechnology and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Naguib IA, Elyazeed NA, Elroby FA, El-Ghobashy MR. Stability indicating spectrophotometric methods for quantitative determination of carbamazepine and its degradation product, iminostilbene, in pure form and pharmaceutical formulations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:21-31. [PMID: 30754023 DOI: 10.1016/j.saa.2019.01.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 01/22/2019] [Accepted: 01/27/2019] [Indexed: 06/09/2023]
Abstract
A stressed study on the stability and degradation behavior under ICH forced degradation conditions of most widely used antiepileptic drug; carbamazepine (CMZ) is presented in this work. The research also includes studying spectrophotometric nature of CMZ and assaying it with mostly used spectrophotometric techniques. Six simple and sensitive spectrophotometric methods are introduced as stability indicating methods for quantitative determination of CMZ and its degradation product, one of its reported potential impurities; iminostilbene (IMS). Dual wavelength is method I where two wavelengths (215 and 270 nm for CMZ and 258 and 307 nm for IMS) were chosen for each component while absorbance difference is zero for the second one. Method II is isoabsorptive point method where the absorbance of CMZ at A225 nm was measured in the range of 0.5-20 μg mL-1. Method III is second derivative method which allows simultaneous determination of CMZ at 247 nm and IMS at 273 nm without any interference. Method IV based on measuring the peak amplitude of first derivative of ratio spectra (1DD) at 280.5 and 253 nm for determination of CMZ and IMS, respectively. Method V is mean centering of the ratio spectra with good linearity for CMZ and IMS over 200-330 nm. Ratio difference method is method VI where good linearity was achieved for determination of CMZ and IMS by measuring differences in the amplitude of ratio spectra at 285, 258 nm and 258, 285 nm, respectively. The proposed methods show successful application in CMZ's pharmaceutical formulations.
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Affiliation(s)
- Ibrahim A Naguib
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, 62514 Beni-Suef, Egypt
| | - Nesma Abo Elyazeed
- Analytical Toxicology Laboratory, Forensic Medicine Authority, Ministry of Justice, 11647 Cairo, Egypt.
| | - Fadwa A Elroby
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Mohamed R El-Ghobashy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt; October 6 University, Faculty of Pharmacy, October 6 City, Giza, Egypt
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Mohamed FA, Ali MF, Rageh AH, Mostafa AM. A highly sensitive HPTLC method for estimation of oxcarbazepine in two binary mixtures with two metabolically related antiepileptic drugs: Application to pharmaceutical and biological samples. Microchem J 2019. [DOI: 10.1016/j.microc.2019.01.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Analysis of Carbamazepine, Oxcarbazepine, Their Impurities, and Non-Labeled Interfering Substances by Stability-indicating UPLC/MS/MS Method: Studying the Method’s Greenness Profile. Chromatographia 2018. [DOI: 10.1007/s10337-018-3623-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Suneetha A, Donepudi S. HPLC method development and validation for the estimation of Axitinib in rabbit plasma. BRAZ J PHARM SCI 2017. [DOI: 10.1590/s2175-97902017000300012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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23
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Gao JL, Wang XY, An J, Du CH, Li MJ, Ma HY, Zhang LN, Bian J, Jiang Y. The significance of a new parameter – plasma protein binding – in therapeutic drug monitoring and its application to carbamazepine in epileptic patients. RSC Adv 2017. [DOI: 10.1039/c7ra02991h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The primary cause of the variability of Cf in pharmacology is the change in plasma protein binding (PPB), thus PPB monitoring should be applied to a better individualization of drug dosage regimens in clinical patients.
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Affiliation(s)
- Jing-lin Gao
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
| | - Xin-yu Wang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
| | - Jing An
- Department of Pharmacy
- Hebei General Hospital
- Shijiazhuang
- China
| | - Chao-hui Du
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
| | - Meng-jiao Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
| | - Hai-yan Ma
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
| | - Li-na Zhang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
| | - Jing Bian
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
| | - Ye Jiang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Hebei Medical University
- Shijiazhuang
- China
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Production of nano-solid dispersions using a novel solvent-controlled precipitation process — Benchmarking their in vivo performance with an amorphous micro-sized solid dispersion produced by spray drying. Eur J Pharm Sci 2016; 93:203-14. [DOI: 10.1016/j.ejps.2016.08.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 06/28/2016] [Accepted: 08/04/2016] [Indexed: 11/18/2022]
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25
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Rani S, Malik AK, Kaur R, Kaur R. A Review for the Analysis of Antidepressant, Antiepileptic and Quinolone Type Drugs in Pharmaceuticals and Environmental Samples. Crit Rev Anal Chem 2016; 46:424-42. [DOI: 10.1080/10408347.2016.1141670] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Susheela Rani
- Department of Chemistry, Punjabi University, Patiala, Punjab, India
| | | | - Ramandeep Kaur
- Department of Chemistry, Punjabi University, Patiala, Punjab, India
| | - Ripneel Kaur
- Department of Chemistry, Punjabi University, Patiala, Punjab, India
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Abstract
This chapter includes the aspects of carbamazepine. The drug is synthesized by the use of 5H-dibenz[b,f]azepine and phosgene followed by subsequent reaction with ammonia. Carbamazepine is generally used for the treatment of seizure disorders and neuropathic pain, it is also important as off-label for a second-line treatment for bipolar disorder and in combination with an antipsychotic in some cases of schizophrenia when treatment with a conventional antipsychotic alone has failed. Other uses may include attention deficit hyperactivity disorder, schizophrenia, phantom limb syndrome, complex regional pain syndrome, borderline personality disorder, and posttraumatic stress disorder. The chapter discusses the drug metabolism and pharmacokinetics and presents various methods of analysis of this drug such electrochemical analysis, spectroscopic analysis, and chromatographic techniques of separation. It also discusses its physical properties such as solubility characteristics, X-ray powder diffraction pattern, and thermal methods of analysis. The chapter is concluded with a discussion on its biological properties such as activity, toxicity, and safety.
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27
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Ullah M, Hussain I, Sun CC. The development of carbamazepine-succinic acid cocrystal tablet formulations with improved in vitro and in vivo performance. Drug Dev Ind Pharm 2015; 42:969-76. [PMID: 26460090 DOI: 10.3109/03639045.2015.1096281] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The use of soluble cocrystal for delivering drugs with low solubility, although a potentially effective approach, often suffers the problem of rapid disproportionation during dissolution, which negates the solubility advantages offered by the cocrystal. This necessitates their robust stabilization in order for successful use in a tablet dosage form. The cocrystal between carbamezepine and succinic acid (CBZ-SUC) exhibits a higher aqueous solubility than its dihydrate, which is the stable form of CBZ in water. Using this model system, we demonstrate an efficient and material-sparing tablet formulation screening approach enabled by intrinsic dissolution rate measurements. Three tablet formulations capable of stabilizing the cocrystal both under accelerated condition of 40 °C and 75% RH and during dissolution were developed using three different polymers, Soluplus® (F1), Kollidon VA/64 (F2) and Hydroxypropyl methyl cellulose acetate succinate (F3). When compared to a marketed product, Epitol® 200 mg tablets (F0), drug release after 60 min from formulations F1 (∼82%), F2 (∼95%) and F3 (∼95%) was all higher than that from Epitol® (79%) in a modified simulated intestinal fluid. Studies in albino rabbits show correspondingly better bioavailability of F1-F3 than Epitol.
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Affiliation(s)
- Majeed Ullah
- a Department of Pharmacy , COMSATS Institute of Information Technology , Abbottabad , Pakistan and.,b Department of Pharmaceutics , Pharmaceutical Materials Science and Engineering Laboratory, College of Pharmacy, University of Minnesota , Minneapolis , MN , USA
| | - Izhar Hussain
- a Department of Pharmacy , COMSATS Institute of Information Technology , Abbottabad , Pakistan and
| | - Changquan Calvin Sun
- b Department of Pharmaceutics , Pharmaceutical Materials Science and Engineering Laboratory, College of Pharmacy, University of Minnesota , Minneapolis , MN , USA
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28
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Walash MI, El-Enany N, Askar H. Validated spectrofluorimetric method for the determination of carbamazepine in pharmaceutical dosage forms after reaction with 4-chloro-7--nitrobenzo-2-oxa-1,3-diazole (NBD-Cl). LUMINESCENCE 2015; 30:1119-24. [DOI: 10.1002/bio.2868] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/19/2014] [Accepted: 01/05/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Mohammed I. Walash
- Department of Analytical Chemistry, Faculty of Pharmacy; University of Mansoura; Mansoura 35516 Egypt
| | - Nahed El-Enany
- Department of Analytical Chemistry, Faculty of Pharmacy; University of Mansoura; Mansoura 35516 Egypt
| | - Hanany Askar
- Department of Analytical Chemistry, Faculty of Pharmacy; University of Mansoura; Mansoura 35516 Egypt
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29
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Datar PA. Quantitative bioanalytical and analytical method development of dibenzazepine derivative, carbamazepine: A review. J Pharm Anal 2015; 5:213-222. [PMID: 29403934 PMCID: PMC5762214 DOI: 10.1016/j.jpha.2015.02.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 02/25/2015] [Accepted: 02/26/2015] [Indexed: 12/27/2022] Open
Abstract
Bioanalytical methods are widely used for quantitative estimation of drugs and their metabolites in physiological matrices. These methods could be applied to studies in areas of human clinical pharmacology and toxicology. The major bioanalytical services are method development, method validation and sample analysis (method application). Various methods such as GC, LC-MS/MS, HPLC, HPTLC, micellar electrokinetic chromatography, and UFLC have been used in laboratories for the qualitative and quantitative analysis of carbamazepine in biological samples throughout all phases of clinical research and quality control. The article incorporates various reported methods developed to help analysts in choosing crucial parameters for new method development of carbamazepine and its derivatives and also enumerates metabolites, and impurities reported so far.
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Affiliation(s)
- Prasanna A Datar
- Department of Pharmaceutical Chemistry, Sinhgad Institute of Pharmacy, Narhe, Pune 411041, India
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30
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Chemometrics enhanced HPLC–DAD performance for rapid quantification of carbamazepine and phenobarbital in human serum samples. Talanta 2014; 119:17-23. [DOI: 10.1016/j.talanta.2013.10.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 10/14/2013] [Accepted: 10/16/2013] [Indexed: 11/21/2022]
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31
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Wu Y, Li L. Determination of total concentration of chemically labeled metabolites as a means of metabolome sample normalization and sample loading optimization in mass spectrometry-based metabolomics. Anal Chem 2012. [PMID: 23190334 DOI: 10.1021/ac3025625] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
For mass spectrometry (MS)-based metabolomics, it is important to use the same amount of starting materials from each sample to compare the metabolome changes in two or more comparative samples. Unfortunately, for biological samples, the total amount or concentration of metabolites is difficult to determine. In this work, we report a general approach of determining the total concentration of metabolites based on the use of chemical labeling to attach a UV absorbent to the metabolites to be analyzed, followed by rapid step-gradient liquid chromatography (LC) UV detection of the labeled metabolites. It is shown that quantification of the total labeled analytes in a biological sample facilitates the preparation of an appropriate amount of starting materials for MS analysis as well as the optimization of the sample loading amount to a mass spectrometer for achieving optimal detectability. As an example, dansylation chemistry was used to label the amine- and phenol-containing metabolites in human urine samples. LC-UV quantification of the labeled metabolites could be optimally performed at the detection wavelength of 338 nm. A calibration curve established from the analysis of a mixture of 17 labeled amino acid standards was found to have the same slope as that from the analysis of the labeled urinary metabolites, suggesting that the labeled amino acid standard calibration curve could be used to determine the total concentration of the labeled urinary metabolites. A workflow incorporating this LC-UV metabolite quantification strategy was then developed in which all individual urine samples were first labeled with (12)C-dansylation and the concentration of each sample was determined by LC-UV. The volumes of urine samples taken for producing the pooled urine standard were adjusted to ensure an equal amount of labeled urine metabolites from each sample was used for the pooling. The pooled urine standard was then labeled with (13)C-dansylation. Equal amounts of the (12)C-labeled individual sample and the (13)C-labeled pooled urine standard were mixed for LC-MS analysis. This way of concentration normalization among different samples with varying concentrations of total metabolites was found to be critical for generating reliable metabolome profiles for comparison.
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Affiliation(s)
- Yiman Wu
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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32
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Dong WC, Zhang ZQ, Jiang XH, Sun YG, Jiang Y. Effect of volume ratio of ultrafiltrate to sample solution on the analysis of free drug and measurement of free carbamazepine in clinical drug monitoring. Eur J Pharm Sci 2012. [PMID: 23201310 DOI: 10.1016/j.ejps.2012.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Traditional ultrafiltration (UF) usually has a large volume ratio of ultrafiltrate to sample solution, and this ratio cannot be well controlled. It can break the balance of protein-binding equilibrium and exert an influence on the analysis of free drug. In the present study, we evaluated the influence of volume ratio of ultrafiltrate to sample solution on the analysis of free drug in human plasma. We used carbamazepine as a model drug and studied the effect of different centrifugation times on ultrafitrate volume and the related effects on unbound carbamazepine measurement. Moreover, we compared the hollow fiber centrifugal ultrafiltration (HFCF-UF) with traditional UF. Our results showed that the ultrafiltrate volume was changed from 40 to 400 μL with the increase of centrifugation time for the traditional UF, and the related changes in unbound concentration were significant. The rate of protein binding (BP) was changed from 40% to 70%. In contrast, a tiny and invariant ultrafiltrate yield (40 μL) was obtained using the HFCF-UF method, and the BP rate was around 72%. In addition, with the HFCF-UF method, the volume ratio of ultrafiltrate to sample solution could be also well controlled by the inner diameters of both the glass tube and hollow fiber. The HFCF-UF method was a more accurate plasma pretreatment procedure, by which the in vivo balance of protein-binding equilibrium was hardly broken. Therefore, this method was successfully employed to quantify the free fraction of carbamazepine in clinical samples.
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Affiliation(s)
- Wei-Chong Dong
- Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang, Hebei Province 050017, China
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