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Lynch CC, Khirich G, Lee RT. Quantification of Biopharmaceutically Relevant Nonionic Surfactant Excipients Using Benchtop qNMR. Anal Chem 2024; 96:6746-6755. [PMID: 38632675 DOI: 10.1021/acs.analchem.4c00422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Nonionic surfactant excipients (NISEs) are commonly added to biologics formulations to mitigate the effects of stress incurred by the active biotherapeutic during manufacturing, transport, and storage. During manufacturing, NISEs are added by dilution of a stock solution directly into a protein formulation, and their accurate addition is critical in maintaining the quality and integrity of the drug product and thus ensuring patient safety. This is especially true for the common NISEs, polysorbates 20 and 80 (PS20 and PS80, respectively) and poloxamer 188 (P188). With the increasing diversity of biologic modalities within modern pharmaceutical pipelines, there is thus a critical need to develop and deploy convenient and user-accessible analytical techniques that can rapidly and reliably quantify these NISEs under biopharmaceutically relevant conditions. We thus pursued 60 MHz benchtop quantitative NMR (qNMR) as a nondestructive and user-friendly analytical technique for the quantification of PS20, PS80, and P188 under such conditions. We demonstrated the ability of benchtop qNMR (1) to quantify simulated PS20, PS80, and P188 stock solutions representative of those used during the drug substance (DS) formulation step in biomanufacturing and (2) to quantify these NISEs at and below their target concentrations (≤0.025% w/v) directly in biologics formulations containing histidine, sucrose, and one of three biotherapeutic modalities (monoclonal antibody, antibody-drug conjugate, and Fc-fusion protein). Our results demonstrate that benchtop qNMR offers a fit-for-purpose, reliable, user-friendly, and green analytical route by which NISE of interest to the biopharmaceutical industry may be readily and reliably quantified. We conclude that benchtop qNMR has the potential to be applied to other excipient formulation components in the presence of various biological modalities as well as the potential for routine integration within analytical and QC laboratories across pharmaceutical development and manufacturing sites.
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Affiliation(s)
- Ciarán C Lynch
- Analytical Research & Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Gennady Khirich
- Analytical Research & Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| | - Ryan T Lee
- Analytical Research & Development, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
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Saito J, Nakamura H, Akabane M, Yamatani A. Quantitative Investigation on Exposure to Potentially Harmful Excipients by Injection Drug Administration in Children Under 2 Years of Age and Analysis of Association with Adverse Events: A Single-Center, Retrospective Observational Study. Ther Innov Regul Sci 2024; 58:316-335. [PMID: 38055156 DOI: 10.1007/s43441-023-00596-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/27/2023] [Indexed: 12/07/2023]
Abstract
INTRODUCTION Potentially harmful excipients (PHEs) for children have been reported and the need for information collection has been advocated. However, studies on the actual occurrence of adverse events are limited. This study investigated the quantitative exposure of PHEs via injection and their association with adverse events in children under 2 years of age. MATERIALS AND METHODS As a single-center observational study, children aged 0-23 months received injectable drugs from April 1, 2018, to March 31, 2023 were included. Information on PHE exposure and adverse events after administration were extracted from medical records. Sodium benzoate, benzyl alcohol, ethanol, glycerol, lactose, polyethylene glycol paraben, polysorbate, propylene glycol, sorbitol, sucrose, sulfite, and thimerosal were selected as PHEs. RESULTS AND DISCUSSION 6265 cases, 333,694 prescriptions, and 368 drugs (264 ingredients) were analyzed. The median age was 0.63 years (interquartile range [IQR] 0.1-1.1). 72,133 prescriptions, 132 drugs and 99 ingredients contained PHE; 2,961 cases exposed to PHE and 1825 cases exceeding permitted daily exposure. The drug with the highest number of exposure cases was hydroxyzine, and the highest number of prescriptions was heparin (both drugs contain benzyl alcohol). In association between adverse events and PHE exposure, higher doses in cases of adverse event occurrence were found in benzyl alcohol, glycerol, polyethylene glycol, and polysorbate exposed cases. Among thimerosal-exposed cases, "developmental delay" was more frequent in exposed cases, but the causal relationship was unknown. Further investigation is needed to clarify the relationship between adverse events and PHE exposure. Additionally, more precise information on PDE for pediatrics including neonates is necessary.
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Affiliation(s)
- Jumpei Saito
- Department of Pharmacy, National Center for Child Health and Development, 2-10-1, Okura, Setagayaku, Tokyo, 157-8535, Japan.
| | - Hidefumi Nakamura
- Department of Research and Development Supervision, National Center for Child Health and Development, 2-10-1, Okura, Setagayaku, Tokyo, 157-8535, Japan
| | - Miki Akabane
- Department of Pharmacy, National Center for Child Health and Development, 2-10-1, Okura, Setagayaku, Tokyo, 157-8535, Japan
| | - Akimasa Yamatani
- Department of Pharmacy, National Center for Child Health and Development, 2-10-1, Okura, Setagayaku, Tokyo, 157-8535, Japan
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Wei Y, Pence IJ, Wiatrowski A, Slade JB, Evans CL. Quantitative analysis of drug tablet aging by fast hyper-spectral stimulated Raman scattering microscopy. Analyst 2024; 149:1436-1446. [PMID: 38050860 DOI: 10.1039/d3an01527k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Pharmaceutical development of solid-state formulations requires testing active pharmaceutical ingredients (API) and excipients for uniformity and stability. Solid-state properties such as component distribution and grain size are crucial factors that influence the dissolution profile, which greatly affect drug efficacy and toxicity, and can only be analyzed spatially by chemical imaging (CI) techniques. Current CI techniques such as near infrared microscopy and confocal Raman spectroscopy are capable of high chemical and spatial resolution but cannot achieve the measurement speeds necessary for integration into the pharmaceutical production and quality assurance processes. To fill this gap, we demonstrate fast chemical imaging by epi-detected sparse spectral sampling stimulated Raman scattering to quantify API and excipient degradation and distribution.
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Affiliation(s)
- Yuxiao Wei
- Wellman Center for Photomedicine, Massachusetts General Hospital, 149 13th Street, Charlestown, Massachusetts 02129, USA.
- Harvard Medical School, Department of Biological and Biomedical Sciences, 260 Longwood Ave, Boston, Massachusetts 02115, USA
| | - Isaac J Pence
- Wellman Center for Photomedicine, Massachusetts General Hospital, 149 13th Street, Charlestown, Massachusetts 02129, USA.
| | - Anna Wiatrowski
- Wellman Center for Photomedicine, Massachusetts General Hospital, 149 13th Street, Charlestown, Massachusetts 02129, USA.
| | - Julia B Slade
- Wellman Center for Photomedicine, Massachusetts General Hospital, 149 13th Street, Charlestown, Massachusetts 02129, USA.
| | - Conor L Evans
- Wellman Center for Photomedicine, Massachusetts General Hospital, 149 13th Street, Charlestown, Massachusetts 02129, USA.
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Thissen J, Klassen MD, Constantinidis P, Hacker MC, Breitkreutz J, Teutenberg T, Fischer B. Online Coupling of Size Exclusion Chromatography to Capillary Enhanced Raman Spectroscopy for the Analysis of Proteins and Biopharmaceutical Drug Products. Anal Chem 2023; 95:17868-17877. [PMID: 38050672 DOI: 10.1021/acs.analchem.3c03991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
The online coupling of size exclusion chromatography (SEC) to capillary enhanced Raman spectroscopy (CERS) based on a liquid core waveguide (LCW) flow cell was applied for the first time to assess the higher-order structure of different proteins. This setup allows recording of Raman spectra of the monomeric protein within complex mixtures, since SEC enables the separation of the monomeric protein from matrix components such as excipients of a biopharmaceutical product and higher molecular weight species (e.g., aggregates). The acquired Raman spectra were used for structural elucidation of well characterized proteins such as bovine serum albumin, hen egg white lysozyme, and β-lactoglobulin and of the monoclonal antibody rituximab in a medicinal product. Additionally, the CERS detection of the disaccharide sucrose, which is used as a stabilizing excipient, was quantified to achieve a limit of detection (LOD) of 120 μg and a limit of quantification (LOQ) of 363 μg injected on the column.
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Affiliation(s)
- Jana Thissen
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Martin D Klassen
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
| | - Philipp Constantinidis
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
| | - Michael C Hacker
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Jörg Breitkreutz
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Thorsten Teutenberg
- Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA), Bliersheimer Straße 58-60, 47229 Duisburg, Germany
| | - Björn Fischer
- Institute of Pharmaceutics and Biopharmaceutics, Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
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Summer M, Tahir HM, Ali S. Sonication and heat-mediated synthesis, characterization and larvicidal activity of sericin-based silver nanoparticles against dengue vector (Aedes aegypti). Microsc Res Tech 2023; 86:1363-1377. [PMID: 37119431 DOI: 10.1002/jemt.24333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/08/2023] [Accepted: 04/16/2023] [Indexed: 05/01/2023]
Abstract
Fabrication, characterization and evaluation of the larvicidal potential of novel silk protein (sericin)-based silver nanoparticles (Se-AgNPs) were the prime motives of the designed study. Furthermore, investigation of the sericin as natural reducing or stabilizing agent was another objective behind this study. Se-AgNPs were synthesized using sonication and heat. Fabricated Se-AgNPs were characterized using particle size analyzer, UV spectrophotometry, FTIR and SEM which confirmed the fabrication of the Se-AgNPs. Size of sonication-mediated Se-AgNPs was smaller (7.49 nm) than heat-assisted Se-AgNPs (53.6 nm). Being smallest in size, sonication-assisted Se-AgNPs revealed the significantly highest (F4,10 = 39.20, p = .00) larvicidal activity against fourth instar lab and field larvae (F4,10 = 1864, p = .00) of dengue vector (Aedes aegypti) followed by heat-assisted Se-AgNPs and positive control (temephos). Non-significant larvicidal activity was showed by silver (without sericin) which made the temperature stability of silver, debatable. Furthermore, findings of biochemical assays (glutathione-S transferase, esterase, and acetylcholinesterase) showed the levels of resistance in field strain larvae. Aforementioned findings of the study suggests the sonication as the best method for synthesis of Se-AgNPs while the larvicidal activity is inversely proportional to the size of Se-AgNPs, i.e., smallest the size, highest the larvicidal activity. Conclusively, status of the sericin as a natural reducing/stabilizing agent has been endorsed by the findings of this study. RESEARCH HIGHLIGHTS: Incorporation of biocompatible and inexpensive sericin as a capping/reducing agent for synthesis of Se-AgNPs. A novel sonication method was used for the fabrication of Se-AgNPs which were thoroughly characterized by particle size analyzer, UV-visible spectrophotometry, SEM and FTIR. Analysis of enzymatic (GSTs, ESTs) levels in field and lab strains of Aedes aegypti larvae for evaluation of insecticides resistance.
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Affiliation(s)
- Muhammad Summer
- Laboratory of Applied Entomology and Medical Toxicology, Department of Zoology, Government College University Lahore, Lahore, Pakistan
| | - Hafiz Muhammad Tahir
- Laboratory of Applied Entomology and Medical Toxicology, Department of Zoology, Government College University Lahore, Lahore, Pakistan
| | - Shaukat Ali
- Laboratory of Applied Entomology and Medical Toxicology, Department of Zoology, Government College University Lahore, Lahore, Pakistan
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Estévez-Gallego J, Álvarez-Bernad B, Pera B, Wullschleger C, Raes O, Menche D, Martínez JC, Lucena-Agell D, Prota AE, Bonato F, Bargsten K, Cornelus J, Giménez-Abián JF, Northcote P, Steinmetz MO, Kamimura S, Altmann KH, Paterson I, Gago F, Van der Eycken J, Díaz JF, Oliva MÁ. Chemical modulation of microtubule structure through the laulimalide/peloruside site. Structure 2023; 31:88-99.e5. [PMID: 36462501 DOI: 10.1016/j.str.2022.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/23/2022] [Accepted: 11/08/2022] [Indexed: 12/05/2022]
Abstract
Taxanes are microtubule-stabilizing agents used in the treatment of many solid tumors, but they often involve side effects affecting the peripheral nervous system. It has been proposed that this could be related to structural modifications on the filament upon drug binding. Alternatively, laulimalide and peloruside bind to a different site also inducing stabilization, but they have not been exploited in clinics. Here, we use a combination of the parental natural compounds and derived analogs to unravel the stabilization mechanism through this site. These drugs settle lateral interactions without engaging the M loop, which is part of the key and lock involved in the inter-protofilament contacts. Importantly, these drugs can modulate the angle between protofilaments, producing microtubules of different diameters. Among the compounds studied, we have found some showing low cytotoxicity and able to induce stabilization without compromising microtubule native structure. This opens the window of new applications for microtubule-stabilizing agents beyond cancer treatment.
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Affiliation(s)
- Juan Estévez-Gallego
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain
| | - Beatriz Álvarez-Bernad
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain
| | - Benet Pera
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain
| | - Christoph Wullschleger
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences - ETH Zurich, Zürich 8093, Switzerland
| | - Olivier Raes
- Department of Organic and Macromolecular Chemistry, Ghent University, Gent 9000, Belgium
| | - Dirk Menche
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | | | - Daniel Lucena-Agell
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain
| | - Andrea E Prota
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, Villigen 5232, Switzerland
| | - Francesca Bonato
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain
| | - Katja Bargsten
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, Villigen 5232, Switzerland
| | - Jelle Cornelus
- Department of Organic and Macromolecular Chemistry, Ghent University, Gent 9000, Belgium
| | - Juan Francisco Giménez-Abián
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain
| | - Peter Northcote
- Ferrier Research Institute, University of Wellington, Lower Hutt 5010, New Zealand
| | - Michel O Steinmetz
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, Villigen 5232, Switzerland; University of Basel, Biozentrum, Basel 4056, Switzerland
| | - Shinji Kamimura
- Department of Biological Sciences, Faculty of Science and Engineering, Chuo University, Tokyo 192-0393, Japan
| | - Karl-Heinz Altmann
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences - ETH Zurich, Zürich 8093, Switzerland
| | - Ian Paterson
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Federico Gago
- Department of Biomedical Sciences and Associated Unit IQM-UAH, Universidad de Alcalá, Alcalá de Henares 28805, Spain
| | - Johan Van der Eycken
- Department of Organic and Macromolecular Chemistry, Ghent University, Gent 9000, Belgium
| | - J Fernando Díaz
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain
| | - María Ángela Oliva
- Centro de Investigaciones Biológicas Margarita Salas - Consejo Superior de Investigaciones Científicas, Madrid 28040, Spain.
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Ansari M, Ranjha NM, Hanif M, Nisa MU, Ali H, Alqahtani AM, Alqahtani T, Khan BA. A novel approach for the quantification of paclitaxel loaded in ethyl cellulose/kollicoat and ethylcellulose/eudragit colloidal particles by UPLC-PDA. Pak J Pharm Sci 2022; 35:1275-1280. [PMID: 36218107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
An optimized rapid reversed phase ultra-performance liquid chromatography (UPLC-PDA) method has been developed and validated for precise and accurate quantification of paclitaxel in drug delivery systems. The chromatographic separation was attained on L1 (USP) column (2.1 ×50 mm, 1.7µm) with an isocratic mobile phase comprised of acetonitrile and water (1:1; flow rate 0.6 mL/min) and detection was executed at 227 nm by PDA detector. The proposed UPLC-PDA method is found to be rapid with retention time of 1.37 min, selective with homogenous peaks and sensitive with Limit of Detection (LOD) of 0.08µg/mL and Limit of Quantification (LOQ) of 2.6µg/mL. The method showed excellent linearity (R2>0.998) over the range of 0.1 to 0.4mg/mL and applied for the paclitaxel quantification in different formulations with no inference of excipients. Thus, the proposed approach has potential for rapid estimation of drug purity, assay and release profile from pharmaceutical preparations.
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Affiliation(s)
- Mahvash Ansari
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Nazar Mohammad Ranjha
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Hanif
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Muqadus Un Nisa
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Hassan Ali
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Ali M Alqahtani
- College of Pharmacy, King Khalid University, Abha Aseer, Saudi Arabia
| | - Taha Alqahtani
- College of Pharmacy, King Khalid University, Abha Aseer, Saudi Arabia
| | - Barkat A Khan
- Drug Delivery and Cosmetics Lab (DDCL).GCPS, Faculty of Pharmacy, Gomal University D.I. Khan, Pakistan
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Jung N, Namjoshi S, Mohammed Y, Grice JE, Benson HAE, Raney SG, Roberts MS, Windbergs M. Application of Confocal Raman Microscopy for the Characterization of Topical Semisolid Formulations and their Penetration into Human Skin Ex Vivo. Pharm Res 2022; 39:935-948. [PMID: 35411509 PMCID: PMC9160154 DOI: 10.1007/s11095-022-03245-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/21/2022] [Indexed: 12/02/2022]
Abstract
PURPOSE The quality testing and approval procedure for most pharmaceutical products is a streamlined process with standardized procedures for the determination of critical quality attributes. However, the evaluation of semisolid dosage forms for topical drug delivery remains a challenging task. The work presented here highlights confocal Raman microscopy (CRM) as a valuable tool for the characterization of such products. METHODS CRM, a laser-based method, combining chemically-selective analysis and high resolution imaging, is used for the evaluation of different commercially available topical acyclovir creams. RESULTS We show that CRM enables the spatially resolved analysis of microstructural features of semisolid products and provides insights into drug distribution and polymorphic state as well as the composition and arrangement of excipients. Further, we explore how CRM can be used to monitor phase separation and to study skin penetration and the interaction with fresh and cryopreserved excised human skin tissue. CONCLUSION This study presents a comprehensive overview and illustration of how CRM can facilitate several types of key analyses of semisolid topical formulations and of their interaction with their biological target site, illustrating that CRM is a useful tool for research, development as well as for quality testing in the pharmaceutical industry.
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Affiliation(s)
- Nathalie Jung
- Institute of Pharmaceutical Technology and Buchmann Institute for Molecular Life Sciences, Goethe University, Frankfurt, Germany
| | - Sarika Namjoshi
- Diamantina Institute, The University of Queensland, Brisbane, Australia
| | - Yousuf Mohammed
- Diamantina Institute, The University of Queensland, Brisbane, Australia
| | - Jeffrey E Grice
- Diamantina Institute, The University of Queensland, Brisbane, Australia
| | - Heather A E Benson
- Curtin Medical School, Curtin University, Perth, Australia
- UniSA Clinical and Health Sciences, University of South Australia, Basil Hetzel Institute for Translational Health Research, Woodville South, Australia
| | - Sam G Raney
- Office of Research and Standards, Office of Generic Drugs, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Michael S Roberts
- Diamantina Institute, The University of Queensland, Brisbane, Australia
- UniSA Clinical and Health Sciences, University of South Australia, Basil Hetzel Institute for Translational Health Research, Woodville South, Australia
| | - Maike Windbergs
- Institute of Pharmaceutical Technology and Buchmann Institute for Molecular Life Sciences, Goethe University, Frankfurt, Germany.
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Baumann K, Alm J, Norberg M, Ejehorn M. Immediate Use After Reconstitution of a Biostimulatory Poly-L-Lactic Acid Injectable Implant. J Drugs Dermatol 2020; 19:1199-1203. [PMID: 33346524 DOI: 10.36849/jdd.2020.5228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Poly-L-lactic acid (PLLA) is a biodegradable, synthetic polymer that stimulates collagen production and can improve skin quality, volume, and thickness. The current reconstitution procedure for Sculptra, a PLLA-containing injectable device involves 2 hours standing time before use. OBJECTIVE To evaluate and validate an immediate-use procedure for reconstituting a PLLA-containing injectable device. METHODS AND MATERIALS Three batches of the product were shaken for 1 minute immediately after reconstitution with 8 mL of sterile water. Different physicochemical tests including viscosity, concentration of excipients (sodium carboxymethylcellulose and mannitol), pH, and particle size distribution were performed for standing times 0, 2, 24, and 72 hours after immediate shaking, and compared with the standard 2 hours standing time before shaking. The recovery and stability of optional addition of 1 mL of 2% lidocaine hydrochloride was also assessed. RESULTS All physiochemical parameters evaluated were equivalent, regardless of reconstitution procedure, showing that shaking vigorously for 1 minute dissolves the excipients of the product properly without a required standing time and with no impact to the PLLA particles. There were no differences in lidocaine hydrochloride content of suspensions after 0 and 72 hours. CONCLUSION The PLLA-containing product can be used immediately after reconstitution including vigorous shaking, as shown from physicochemical analyses. Optional addition of lidocaine hydrochloride is feasible. J Drugs Dermatol. 2020;19(12): doi:10.36849/JDD.2020.5228.
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Bajwa J, Nawaz H, Majeed MI, Hussain AI, Farooq S, Rashid N, Bakkar MA, Ahmad S, Hyat H, Bashir S, Ali S, Kashif M. Quantitative analysis of solid dosage forms of cefixime using Raman spectroscopy. Spectrochim Acta A Mol Biomol Spectrosc 2020; 238:118446. [PMID: 32408230 DOI: 10.1016/j.saa.2020.118446] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/27/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Quantification of antibiotics is of significant importance because of their use in the prevention and treatment of different diseases. Cefixime (CEF) is a cephalosporin antibiotic that is used against bacterial infections. In the present study, Raman spectroscopy has been applied for the identification and quantification of Raman spectral features of cefixime with different concentrations of Active Pharmaceutical Ingredient (API) and excipients in solid dosage forms. The changes in Raman spectral features of API and excipients in the solid dosage forms of cefixime were studied and Raman peaks were assigned based on the literature. Multivariate data analysis techniques including the Principal Component Analysis (PCA) and Partial Least Squares Regression analysis (PLSR) have been performed for the qualitative and quantitative analysis of solid dosage forms of cefixime. PCA was found helpful in differentiating all the Raman spectral data associated with the different solid dosage forms of cefixime. The coefficient of determination (R2), mean absolute error (MAE), and mean relative error (MRE) for the calibration data-set were 0.99, 0.72, and 0.01 respectively and for the validation data-set were 0.99, 3.15, and 0.02 respectively, that shows the performance of the model. The root mean square error of calibration (RMSEC) and root mean square error of prediction (RMSEP) were found to be 0.56 mg and 3.13 mg respectively.
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Affiliation(s)
- Jawad Bajwa
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan.
| | | | | | - Sidra Farooq
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Nosheen Rashid
- Department of Chemistry, University of Central Punjab, Faisalabad Campus, Faisalabad, Pakistan
| | | | - Shamsheer Ahmad
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Hamza Hyat
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Saba Bashir
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Saqib Ali
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Kashif
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
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Pétronille R, Bernard D, Guillaume LG, Victoire V, Thomas F, Jérôme C, Eloïse DC, Gérard P, Sylvie S, Audrey S, François L, Suzette D, Muriel P, Maxime A. Comparative analysis of docetaxel: physical and chemical characterisation of Taxotère® and generics. Eur J Cancer 2020; 135:183-191. [PMID: 32599408 DOI: 10.1016/j.ejca.2020.04.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 04/01/2020] [Indexed: 02/02/2023]
Abstract
Several cases of fatal enterocolitis have been described in association with the use of docetaxel (DTX), and this increase in adverse events has been concomitant with a change in formulation. Indeed in 2010, a new DTX-based presentation has been introduced in the form of a single ready-to-use vial by Sanofi-Aventis, presentation also used for generics. In this study, different available formulations were compared (Sanofi 2 vials, Sanofi 1 vial, Accord Healthcare, Kabi, Hospira) in terms of composition compliance with control specifications and simulated micelle behaviour to try to determine what could be the potential causes of this problem. This work had permitted to show that all the tested products complied with specifications in terms of dosage and purity. Variations in the composition of polysorbate 80 (PS80) have been observed but are probably too small to be responsible for the toxicity found in patients. However, we identified a difference in micelle size and release kinetics probably because of doubling concentration of ethanol in new formulation. As a result, we emphasised the importance in the case of DTX of conducting bioequivalence studies as expected in European Medicines Agency (EMA) guidance to ensure patient safety, even though these formulation changes might seem minor. Therefore, further studies are needed to explore the potential role of ethanol, PS80 and the unbound fraction of DTX in the development of enterocolitis in patients treated with DTX.
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Affiliation(s)
- Roy Pétronille
- Pharmacy Department, Gustave Roussy, Villejuif, F-94805, France.
| | - Do Bernard
- Pharmacy Department, Hôpital Henri Mondor, Créteil, F-94010, France; University of Paris-Sud, Department of Pharmacy, Laboratory "Matériaux et Santé" EA 401, 5 Rue Jean Baptiste Clément, 92296 Châtenay-Malabry, France
| | | | | | - Fleury Thomas
- Pharmacy Department, Gustave Roussy, Villejuif, F-94805, France
| | - Conq Jérôme
- Pharmacy Department, Gustave Roussy, Villejuif, F-94805, France
| | - Da Costa Eloïse
- Pharmacy Department, Gustave Roussy, Villejuif, F-94805, France
| | - Pierron Gérard
- Centre National de La Recherche Scientifique, UMR-8122, Institut Gustave Roussy, Villejuif 94805, France
| | - Souquere Sylvie
- Centre National de La Recherche Scientifique, UMR-8122, Institut Gustave Roussy, Villejuif 94805, France
| | - Solgadi Audrey
- University of Paris-Sud, Department of Pharmacy, Laboratory "Matériaux et Santé" EA 401, 5 Rue Jean Baptiste Clément, 92296 Châtenay-Malabry, France
| | - Lemare François
- Pharmacy Department, Gustave Roussy, Villejuif, F-94805, France
| | - Delaloge Suzette
- Department of Cancer Medicine, Gustave Roussy, 114 Rue Edouard Vaillant, 94800 Villejuif, France
| | - Paul Muriel
- Pharmacy Department, Hôpital Henri Mondor, Créteil, F-94010, France
| | - Annereau Maxime
- Pharmacy Department, Gustave Roussy, Villejuif, F-94805, France
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12
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Li Y, Anderson CA, Drennen JK, Airiau C, Igne B. Development of an In-Line Near-Infrared Method for Blend Content Uniformity Assessment in a Tablet Feed Frame. Appl Spectrosc 2019; 73:1028-1040. [PMID: 30990067 DOI: 10.1177/0003702819842189] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Process analytical technology (PAT) has shown great potential for in-line tableting process monitoring. The study focuses on the development and validation of an in-line near-infrared (NIR) spectroscopic method for the determination of content uniformity of blends in a tablet feed frame. An in-line NIR method was developed after careful evaluation of the impact of potential experimental factors on the robustness and model accuracy and precision. The NIR method was validated according to the principles outlined in International Conference on Harmonization-Q2 for validation of analytical procedures and was demonstrated to be suitable for monitoring blend content for the formulation under evaluation. Reliable measurements of blend homogeneity rely on representative sampling. To reach the appropriate scale of scrutiny for a unit dose, the study assessed factors that influence the effective sample size measured by NIR. Spectral averaging, integration time, and feed frame paddle wheel speed were found to influence the effective sample size measured by the NIR probe. The effective sampling size was also estimated by comparing the distribution of predicted values with the reference values. The development of a robust, in-line PAT method was facilitated by thorough understanding of the sensitivity of PAT sensors to factors affecting pharmaceutical processes and products.
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Affiliation(s)
- Yi Li
- Duquesne University, Graduate School of Pharmaceutical Sciences, Pittsburgh, PA, USA
| | - Carl A Anderson
- Duquesne University, Graduate School of Pharmaceutical Sciences, Pittsburgh, PA, USA
| | - James K Drennen
- Duquesne University, Graduate School of Pharmaceutical Sciences, Pittsburgh, PA, USA
| | - Christian Airiau
- GlaxoSmithKline, Analytical Sciences and Development, Collegeville, PA, USA
| | - Benoît Igne
- GlaxoSmithKline, Analytical Sciences and Development, Collegeville, PA, USA
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13
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Tanaka K, van Franeker JA, Deguchi T, Takada H. Piece-by-piece analysis of additives and manufacturing byproducts in plastics ingested by seabirds: Implication for risk of exposure to seabirds. Mar Pollut Bull 2019; 145:36-41. [PMID: 31590798 DOI: 10.1016/j.marpolbul.2019.05.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/11/2019] [Accepted: 05/12/2019] [Indexed: 05/25/2023]
Abstract
The risk of marine organisms ingesting plastics has become a growing concern due to hazard chemicals in plastics. To identify compounds to which seabirds potentially have substantial exposure, 194 plastics fragments and pellets ingested by seabirds, i.e., northern fulmars from the Faroe Islands, and laysan albatross and black-footed albatross from Mukojima Island, were analyzed piece by piece. Four kinds of UV stabilizers, 2 brominated flame retardants, and styrene oligomers were detected at detection frequencies of 4.6%, 2.1%, and 2.1%, respectively. Concentrations ranging from not detected (n.d.) - 1700 μg/g were measured for UV stabilizers, n.d. - 1100 μg/g for flame retardants, and n.d. - 3200 μg/g for styrene oligomers. We found that these chemicals could be retained in plastics during drifting and fragmentation in the ocean and transported to seabirds. This type of transport via plastics can be direct pathway that introduces hazardous compounds to marine organisms.
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Affiliation(s)
- Kosuke Tanaka
- Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan
| | - Jan A van Franeker
- Wageningen Marine Research, Ankerpark 27, 1781 AG Den Helder, the Netherlands
| | - Tomohiro Deguchi
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko, Chiba 270-1145, Japan
| | - Hideshige Takada
- Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.
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14
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Soremekun R, Ogbuefi I, Aderemi-Williams R. Prevalence of ethanol and other potentially harmful excipients in pediatric oral medicines: survey of community pharmacies in a Nigerian City. BMC Res Notes 2019; 12:460. [PMID: 31349864 PMCID: PMC6660694 DOI: 10.1186/s13104-019-4486-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 07/15/2019] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Excipients are needed in the formulation of oral liquid medicines intended for children; they have however been reported to trigger safety issues. This study evaluated the concentrations and prevalence of ethanol and other potentially harmful excipients in pediatric formulations marketed in South Eastern Nigeria in line with international labeling guidelines and allowable daily limits (ADL). The study sampled oral pediatric formulations offered for sale in registered pharmacies. Those with accessible information leaflets were assessed for the presence and quantity of previously flagged excipients with potential to harm the pediatric population. RESULT Of the 380 oral pediatric medicines, 140 provided access to list/quantity of ingredients. 47.9% (67) of the formulations contain at least one of the flagged excipients while the remaining only listed the active ingredients. Ethanol had the highest occurrence (62.7%) and was more in cough/cold medicines. A homeopathic cough and cold remedy had concentration of 90% v/v. Ethanol and sucrose in some formulations exhibited concentrations with a potential of crossing their approved daily intake (ADI) (1-90% v/v and 1.7 g-3.7 g/5 ml respectively). Ethanol use in studied pediatric formulations was quite high, with ethanol-containing formulations being prescribed for children 0-6 years and older. Only 26 (38.8%) completely satisfied the labelling requirements for ethanol containing formulations.
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Affiliation(s)
- Rebecca Soremekun
- Department of Clinical Pharmacy, Faculty of Pharmacy, University of Lagos, Lagos, Nigeria
- Faculty of Public Health, West African Postgraduate College of Pharmacists, Lagos, Nigeria
| | - Irene Ogbuefi
- Faculty of Public Health, West African Postgraduate College of Pharmacists, Lagos, Nigeria
| | - Roseline Aderemi-Williams
- Department of Clinical Pharmacy, Faculty of Pharmacy, University of Lagos, Lagos, Nigeria
- Faculty of Public Health, West African Postgraduate College of Pharmacists, Lagos, Nigeria
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15
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Ennis ZN, Broe A, Pottegård A, Ahern TP, Hallas J, Damkier P. Cumulative exposure to phthalates from phthalate-containing drug products: a Danish population-wide study. Br J Clin Pharmacol 2018; 84:1798-1805. [PMID: 29688578 PMCID: PMC6046487 DOI: 10.1111/bcp.13614] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 04/04/2018] [Accepted: 04/15/2018] [Indexed: 12/31/2022] Open
Abstract
AIMS Up to 50-fold higher levels of urinary phthalate metabolites have been observed in users of phthalate-containing drug products compared with non-users. This is of concern, as phthalates are suspected endocrine disrupters and have been associated with cancer development. This study aims to quantify annual cumulated phthalate exposure from drug products among users of phthalate-containing oral medications in Denmark throughout the period of 2004-2016. METHODS We conducted a Danish nationwide cohort study using The Danish National Prescription Registry and an internal database held by The Danish Medicines Agency. These databases hold information on drug products; date of dispensing, and the type and quantity of excipients in drugs with Danish marketing permission. We present the number of users over time and their distribution of exposure to enteric phthalate polymers and ortho-phthalates. RESULTS The annual number of individuals exposed to phthalate-containing products declined during 2004-2016. The total number of individuals exposed to dibutyl phthalate declined from 21 499 in 2004 to 5400 in 2016. However, among those exposed, the median dibutyl phthalate exposure remained above European regulatory limit of exposure ranging between 380-1710 mg/year throughout the study period. Lithium-products constituted the majority of dibutyl phthalate exposure. Diethyl phthalate exposure, mainly caused by erythromycin, theophylline and diclofenac products, did not exceed the EMA regulatory limit. CONCLUSION While the number of individuals exposed to phthalates from oral medications during 2004-2016 declined, the use of phthalate-containing drugs is still considerable.
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Affiliation(s)
- Zandra Nymand Ennis
- Department of Clinical Biochemistry and PharmacologyOdense University HospitalDenmark
| | - Anne Broe
- Clinical Pharmacology and Pharmacy, Department of Public HealthUniversity of Southern DenmarkDenmark
| | - Anton Pottegård
- Clinical Pharmacology and Pharmacy, Department of Public HealthUniversity of Southern DenmarkDenmark
| | - Thomas P. Ahern
- Department of Surgery, Larner College of MedicineUniversity of VermontUSA
| | - Jesper Hallas
- Department of Clinical Biochemistry and PharmacologyOdense University HospitalDenmark
- Clinical Pharmacology and Pharmacy, Department of Public HealthUniversity of Southern DenmarkDenmark
| | - Per Damkier
- Department of Clinical Biochemistry and PharmacologyOdense University HospitalDenmark
- Department of Clinical ResearchUniversity of Southern DenmarkDenmark
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16
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Santana CP, Medeiros FD, Correia LP, Diniz PHGD, Véras G, Medeiros ACD. Dissolution and uniformity of content of tablets developed with extract of Ximenia americana L. PLoS One 2018; 13:e0197323. [PMID: 29795592 PMCID: PMC5993115 DOI: 10.1371/journal.pone.0197323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 04/29/2018] [Indexed: 11/18/2022] Open
Abstract
Herbal medicines currently represent an important part of the world pharmaceutical market, which shows growing interest in the use of herbal medicines. However, the production of such medicines involves a complex series of steps, which determine the production viability and the quality of the final product. Ximenia americana L. is a plant occurring in several regions of the world, with well-known and applied medicinal properties. Thus, the aim of this work was to develop and evaluate the physical and physical-chemical quality of tablets produced with X. americana L. extract. The extract was spray-dried from a hydroethanolic extractive solution and characterized as to its phytochemical composition. The chemical marker was determined and quantified using validated chromatographic methods. These methods indicated the presence of gallic acid at a concentration of 1.61 mg g(-1). Formulations were proposed and analyzed for their flow and compaction properties. The best formulation was used to obtain a batch of tablets, which was evaluated for its quality characteristics and showed to be within the pharmacopoeial specifications for average weight, hardness, friability, and disintegration time. The dissolution profile of the tablets produced was obtained, showing the release of about 70% of the vegetable extract content within 30 minutes. Results showed that it was possible to obtain herbal tablets containing a high content of vegetal extract by direct compression, developing a rapid process of formulation and production and guaranteeing the quality characteristics of the final product.
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Affiliation(s)
- Cleildo P. Santana
- Laboratório de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brasil
| | - Francinalva D. Medeiros
- Laboratório de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brasil
| | - Lidiane P. Correia
- Departamento de Farmácia, Centro de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brasil
| | - Paulo Henrique G. D. Diniz
- Laboratório de Química Analítica e Quimiometria, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brasil
| | - Germano Véras
- Laboratório de Química Analítica e Quimiometria, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brasil
| | - Ana Cláudia D. Medeiros
- Laboratório de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brasil
- Departamento de Farmácia, Centro de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, Campina Grande, Paraíba, Brasil
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17
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Raza A, Ansari TM. A novel spectrophotometric determination of caroverine in pharmaceutical formulations via derivatization with Folin-ciocalteu Phenol reagent. Pak J Pharm Sci 2018; 31:153-157. [PMID: 29348097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study we have reported a new, fast and extraction free spectrophotometric procedure for the assessment of caroverine in pharmaceutical raw and tablet dosage forms. In the reported visible spectrophotometric procedure tungstate in Folin-Ciocalteu phenol reagent is reduced in alkaline medium and produces the blue colored chromogen that shows Λmax at 740nm with the calibration range of 2-28μg/ml. The LOD and LOQ values are 1.15 and 3.81μg/ml respectively. The newly developed analytical procedure is used to determine caroverine in raw material of and commercial tablets dosage forms. The spectrophotometric method represented in this study is simple, rapid and extraction free. It may easily be utilized for the determination of caroverine in pharmaceutical laboratories for quality control and stability studies purpose.
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Affiliation(s)
- Asad Raza
- Division of Analytical Chemistry, Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
| | - Tariq Mahmood Ansari
- Division of Analytical Chemistry, Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
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18
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Niczinger NA, Kállai-Szabó B, Lengyel M, Gordon P, Klebovich I, Antal I. Physicochemical analysis in the evaluation of reconstituted dry emulsion tablets. J Pharm Biomed Anal 2017; 134:86-93. [PMID: 27889669 DOI: 10.1016/j.jpba.2016.11.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/31/2016] [Accepted: 11/03/2016] [Indexed: 11/18/2022]
Abstract
The aim of this study was to characterize the formation of emulsions by droplet size analysis and turbidimetry during reconstitution from a solid dosage form, namely from dry emulsion systems, which carry an oil phase for poorly soluble active ingredients. For the dry emulsion systems tablets were prepared either from oil-in-water systems using a freeze-drying process or through direct compression containing the same oil and excipients. The ratios of oil to emulgents and oil to xanthan gum were equal in both methods. In the preparation methods applied, mannitol, erythritol and lactose were used as excipients and mannitol was found to be the most effective excipient based on droplet size reconstitution, turbidimetry and physical properties. Quality control involved testing the physical properties of tablets and characterizing the reconstituted emulsions.
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Affiliation(s)
- Noémi Anna Niczinger
- Department of Pharmaceutics, Semmelweis University, 7 Hőgyes Endre Str., H-1092 Budapest, Hungary
| | - Barnabás Kállai-Szabó
- Department of Pharmaceutics, Semmelweis University, 7 Hőgyes Endre Str., H-1092 Budapest, Hungary
| | - Miléna Lengyel
- Department of Pharmaceutics, Semmelweis University, 7 Hőgyes Endre Str., H-1092 Budapest, Hungary
| | - Péter Gordon
- Department of Electronics Technology, Budapest University of Technology and Economics, 18 Egry J. Str., H-1111 Budapest, Hungary
| | - Imre Klebovich
- Department of Pharmaceutics, Semmelweis University, 7 Hőgyes Endre Str., H-1092 Budapest, Hungary
| | - István Antal
- Department of Pharmaceutics, Semmelweis University, 7 Hőgyes Endre Str., H-1092 Budapest, Hungary.
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Abstract
Nicotiana tabacum (Solanaceae) is the only species whose leaves can be legally marketed as tobacco according to the Japanese Tobacco Business Act. Nicotine, a major alkaloid produced by N. tabacum leaves, is regulated in pharmaceuticals by the Japanese Pharmaceutical Affairs Law. However, the use of N. tabacum stems as an excipient in pharmaceuticals is permitted, because these contained only a small amount of nicotine. Recently, several reports showed that a substantial amount of nicotine was detected in an OTC pharmaceutical product, in which N. tabacum stems were used as an excipient. Therefore, products containing N. tabacum stems could be contaminated with the leaf material. In the present study, we established a method to detect contamination of N. tabacum stem materials with its leaves, using microscopy to obtain standard reference microphotographs for identification. Cultivated N. tabacum stems and leaves, commercial cigarette leaves, and N. tabacum tissue imported as excipient material were used for preparing the microphotographs. The characteristic N. tabacum leaf structures found in the powdered fragments included: epidermal cells with sinuous anticlinal cell walls, hairs, mesophyll parenchyma with crystalized calcium oxalate (calciphytoliths), and branching vascular bundles derived from reticulate net-veins. A comparison of the microscopic characteristics of an OTC powder with those from the standard reference microphotographs was an effective method for N. tabacum stem and leaf identification. Thus, we evaluated the powdered pharmaceutical product containing N. tabacum stem tissue and Hydrangea serrata (Hydrangeaceae) leaf tissue as excipients, and confirmed the presence of N. tabacum leaf material.
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Affiliation(s)
- Hiroko Tokumoto
- Division of Pharmacognosy, Phytochemistry, and Narcotics, National Institute of Health Sciences
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20
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Wang T, Ibrahim A, Potts AR, Hoag SW. Application of Multivariate Strategies to the Classification of Pharmaceutical Excipient Manufacturers Based on Near-Infrared (NIR) Spectra. Appl Spectrosc 2015; 69:1257-1270. [PMID: 26647049 DOI: 10.1366/15-07859] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Using partial least square discriminate analysis (PLSDA), we studied the spectroscopic differences between the commonly used filler-binder microcrystalline cellulose (MCC) from five manufactures. These samples had subtle differences in the chemical and physical properties, which are often the cause of differences in excipient performance. Studying these differences allowed us to build and validate a model to classify five manufacturers of MCC using near-infrared (NIR) spectra. The sample training set includes 39 MCC samples collected from five manufactures with regions spanning the United States of America, Japan, Taiwan, Germany, and Brazil. The samples from individual manufacturers include diverse grades that differ in moisture content, particle size, and bulk density. Optimized pretreatment methods were identified as standard normal variate normalization, followed by Savitzky-Golay second derivative, mean centering, and orthogonal signal correction. The model was optimized with cross-validation and validated with an independent sample set comprising nine samples collected from those five manufacturers. The results showed that none of the samples in the independent validation set was misclassified. The score and loading plots revealed that the differences in content of oxidized cellulose group, water content and states, hydrogen bonding, and degree of polymerization of the MCC samples are responsible for the class differentiation. Permutation test demonstrated that the outcome of the PLSDA model was significantly different from that of the randomly generated model. The advantages and limitations of the method in this type of application were discussed.
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Affiliation(s)
- Ting Wang
- University of Maryland, Department of Pharmaceutical Sciences, Baltimore, MD 21201 USA
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21
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Chen X, Stoneburner K, Ladika M, Kuo TC, Kalantar TH. High-Throughput Raman Spectroscopy Screening of Excipients for the Stabilization of Amorphous Drugs. Appl Spectrosc 2015; 69:1271-1280. [PMID: 26647050 DOI: 10.1366/15-07914] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Low aqueous solubility of active pharmaceutical ingredients (APIs) is an enduring problem in pharmaceutical development, and it is becoming increasingly prevalent among new drug candidates. It is estimated that about 40% of drugs in the development pipeline and approximately 60% of the drugs coming directly from discovery suffer from poor aqueous solubility and slow dissolution, thereby reducing their bioavailability and efficacy and thus preventing their commercialization. It is well known that utilizing the amorphous form of a drug can be a useful approach to improve the dissolution rate and solubility of poorly water-soluble APIs. Amorphous compounds are thermodynamically unstable, but they can be stabilized by combining them with a carrier polymer (excipient) to form a solid dispersion. High-throughput Raman spectroscopy was used in this study to identify excipients that promote formation and stabilization of the amorphous drug form in solid dispersions. Four model APIs were used as poorly soluble drug candidates: ketoprofen, danazol, griseofulvin, and probucol. The Raman signals of excipients were generally negligible, and therefore Raman bands from the drugs were used with minimal spectral pre-processing. By comparing Raman spectra collected from the APIs in the crystalline and molten state, appropriate spectral features and regions were identified for the development of semi-quantitative methods to determine the amorphous content for each API. It is demonstrated that methods based on peak intensity ratio, peak width, peak distance, and classical least squares can all be effective methods for the screening of excipients. Interesting excipient-dependent phase transformation behavior was also observed for probucol.
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Affiliation(s)
- Xiaoyun Chen
- Analytical Sciences, Core R&D, Dow Chemical Company, Midland, MI 48667 USA
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22
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Sasakura D, Nakayama K, Chikuma T. Application of the quantitative detection of a change in concentration of magnesium stearate in a feeder tube of tableting manufacture by real-time near-infrared spectroscopy. Pharmazie 2015; 70:636-639. [PMID: 26601418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Process analytical technology is important for the analysis and control of manufacturing processes. Near-infrared spectroscopy is widely used in various process analytical technologies for the analysis of the chemical componentsof solid dosage forms. Lubrication is an important process carried out before a tablet is produced. In this process, the concentration of lubricant, such as magnesium stearate (StMg), might change for one of many reasons during powder transport, which would be a critical problem such as variation in tablet compressibility and dissolution failure of compressed tablets. Our group investigated the feasibility of the quantitative monitoring of a change in the concentration of StMg in the feeder tube of tableting equipment employing real-time near-infrared spectroscopy.
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Nowak K, Pliński EF, Karolewicz B, Jarząb PP, Plińska S, Fuglewicz B, Walczakowski MJ, Augustyn Ł, Sterczewsk ŁA, Grzelczak MP, Hruszowiec M, Beziuk G, Mikulic M, Pałka N, Szustakowskip M. SELECTED ASPECTS OF TERAHERTZ SPECTROSCOPY IN PHARMACEUTICAL SCIENCES. Acta Pol Pharm 2015; 72:851-866. [PMID: 26665391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
THz-TDS techniques are applied to investigate selected pharmaceutical samples. Investigations were performed on selected pharmaceutical samples with active pharmaceutical ingredients (API)--famotidine, ranitidine, fenofibrate, lovastatin, simvastatin, aspirin, ketoconazole, acyclovir (hydrated and non-hydrated), on excipients--lactose, glucose (hydrated and non-hydrated), Pluronic 127, and on mixtures of selected compounds. Pseudo-polymorphism effects are considered as well. Examples of the terahertz imaging technique are also given. APIs and excipients can be easily recognized in the terahertz band by their specific "fingerprints" as individual components and in mixtures. The hydration process as a variety of polymorphism can also be easily monitored using the THz technique. Moreover, terahertz light can be useful for the penetration of tablets, giving clear pictures of possible defects in tablet coatings.
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Gut Y, Boiret M, Bultel L, Renaud T, Chetouani A, Hafiane A, Ginot YM, Jennane R. Application of chemometric algorithms to MALDI mass spectrometry imaging of pharmaceutical tablets. J Pharm Biomed Anal 2014; 105:91-100. [PMID: 25543287 DOI: 10.1016/j.jpba.2014.11.047] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 11/25/2014] [Accepted: 11/27/2014] [Indexed: 01/31/2023]
Abstract
During drug product development, the nature and distribution of the active substance have to be controlled to ensure the correct activity and the safety of the final medication. Matrix assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI), due to its structural and spatial specificities, provides an excellent way to analyze these two critical parameters in the same acquisition. The aim of this work is to demonstrate that MALDI-MSI, coupled with four well known multivariate statistical analysis algorithms (PCA, ICA, MCR-ALS and NMF), is a powerful technique to extract spatial and spectral information about chemical compounds from known or unknown solid drug product formulations. To test this methodology, an in-house manufactured tablet and a commercialized Coversyl(®) tablet were studied. The statistical analysis was decomposed into three steps: preprocessing, estimation of the number of statistical components (manually or using singular value decomposition), and multivariate statistical analysis. The results obtained showed that while principal component analysis (PCA) was efficient in searching for sources of variation in the matrix, it was not the best technique to estimate an unmixing model of a tablet. Independent component analysis (ICA) was able to extract appropriate contributions of chemical information in homogeneous and heterogeneous datasets. Non-negative matrix factorization (NMF) and multivariate curve resolution-alternating least squares (MCR-ALS) were less accurate in obtaining the right contribution in a homogeneous sample but they were better at distinguishing the semi-quantitative information in a heterogeneous MALDI dataset.
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Affiliation(s)
- Yoann Gut
- University Orléans, PRISME Laboratory, EA 4229, 12, rue De Blois, BP 6744, F-45072 Orléans, France; Technologie Servier, 27 rue Eugène Vignat, 45000 Orléans, France.
| | - Mathieu Boiret
- Technologie Servier, 27 rue Eugène Vignat, 45000 Orléans, France
| | - Laurent Bultel
- Technologie Servier, 27 rue Eugène Vignat, 45000 Orléans, France
| | - Tristan Renaud
- Technologie Servier, 27 rue Eugène Vignat, 45000 Orléans, France
| | - Aladine Chetouani
- University Orléans, PRISME Laboratory, EA 4229, 12, rue De Blois, BP 6744, F-45072 Orléans, France
| | - Adel Hafiane
- INSA-CVL, PRISME Laboratory, EA 4229, Avenue Lahitolle, F-18020 Bourges, France
| | | | - Rachid Jennane
- University Orléans, I3MTO Laboratory, EA 4708, 8, rue Léonard de Vinci, BP 6744, F-45072 Orléans, France
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Mohsin K, Al-Qahtani S, Alanazi FK. Rapid and sensitive bioanalytical stability-indicating method for quantification of talinolol, a selective β1 adrenoceptor antagonist in lipid based formulations using ultrafast UHPLC systems. Acta Pol Pharm 2014; 71:737-745. [PMID: 25362802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The current study evaluates the ultra high performance liquid chromatography (UHPLC) method for the quantification of talinolol in lipid-based formulations. A simple, rapid, reliable and precise reversed phase UHPLC method has been developed and validated according to the regulatory guidelines, which was composed of isocratic mobile phase; acetonitrile and phosphate buffer saline (pH 4.5) with a flow rate of 0.4 mL/min, and column HSS C18 (2.1 x 50 mm, 1.8 μm). The detection was carried out at 245 nm. The developed UHPLC method was found to be rapid (1.8 min run time), selective with high resolution of talinolol peak (0.88 min) from different lipid matrices and highly sensitive (limit of detection and lower limit of quantification were 0.14 ppm and 0.5 ppm, respectively). The linearity, accuracy and precision were determined as acceptable over the concentration range of 0.5-100 ppm for talinolol. The results showed that the proposed UHPLC method can be used for the estimation of talinolol in lipid-based formulation by indicating its purity and stability with no interference of excipients or related substances of active pharmaceutical ingredient.
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Devrim B, Dinç E, Bozkir A. Fast determination of diphenhydramine hydrochloride in reconstitutable syrups by CWT, PLS AND PCR methods. Acta Pol Pharm 2014; 71:721-729. [PMID: 25362800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Diphenhydramine hydrochloride (DPH), a histamine H1-receptor antagonist, is widely used as antiallergic, antiemetic and antitussive drug found in many pharmaceutical preparations. In this study, a new reconstitutable syrup formulation of DPH was prepared because it is more stable in solid form than that in liquid form. The quantitative estimation of the DPH content of a reconstitutable syrup formulation in the presence of pharmaceutical excipients, D-sorbitol, sodium citrate, sodium benzoate and sodium EDTA is not possible by the direct absorbance measurement. Therefore, a signal processing approach based on continuous wavelet transform was used to determine the DPH in the reconstitutable syrup formulations and to eliminate the effect of excipients on the analysis. The absorption spectra of DPH in the range of 5.0-40.0 μg/mL were recorded between 200-300 nm. Various wavelet families were tested and Biorthogonal1.1 continuous wavelet transform (BIOR1.1-CWT) was found to be optimal signal processing family to get fast and desirable determination results and to overcome excipient interference effects. For a comparison of the experimental results obtained by partial least squares (PLS) and principal component regression (PCR) methods were applied to the quantitative prediction of DPH in the mentioned samples. The validity of the proposed BIOR1.1-CWT, PLS and PCR methods were achieved analyzing the prepared samples containing the mentioned excipients and using standard addition technique. It was observed that the proposed graphical and numerical approaches are suitable for the quantitative analysis of DPH in samples including excipients.
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Martín Siguero A, Tudela Patón P, Pérez Serrano R, Encinas Barrios C. [Excipients of mandatory declaration (EMD): a non-resolved obligation]. Farm Hosp 2014; 38:148-149. [PMID: 24669902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Affiliation(s)
- A Martín Siguero
- Servicio de Farmacia. Hospital General Universitario. Ciudad Real. España..
| | - P Tudela Patón
- Servicio de Farmacia. Hospital General Universitario. Ciudad Real. España
| | - R Pérez Serrano
- Servicio de Farmacia. Hospital General Universitario. Ciudad Real. España
| | - C Encinas Barrios
- Servicio de Farmacia. Hospital General Universitario. Ciudad Real. España
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Brittain HG. Preface to volume 39. Profiles Drug Subst Excip Relat Methodol 2014; 39:ix. [PMID: 24794913 DOI: 10.1016/b978-0-12-800173-8.10000-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- Harry G Brittain
- Editor, Profiles of Drug Substances, Excipients, and Related Methodology.
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De Vuono A, Scicchitano F, Palleria C, Russo E, De Sarro G, Gallelli L. Lack of efficacy during the switch from brand to generic allopurinol. J Forensic Leg Med 2013; 20:540-2. [PMID: 23756530 DOI: 10.1016/j.jflm.2013.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 01/03/2013] [Accepted: 02/05/2013] [Indexed: 01/17/2023]
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Heydari R, Shamsipur M, Naleini N. Simultaneous determination of EDTA, sorbic acid, and diclofenac sodium in pharmaceutical preparations using high-performance liquid chromatography. AAPS PharmSciTech 2013; 14:764-9. [PMID: 23585291 PMCID: PMC3666002 DOI: 10.1208/s12249-013-9962-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 03/22/2013] [Indexed: 11/30/2022] Open
Abstract
A simple high-performance liquid chromatographic method for simultaneous determination of ethylenediaminetetraacetic acid (EDTA), sorbic acid, and diclofenac sodium was developed and validated. Separation was achieved on a C(18) column (10 cm×4.6 mm) using gradient elution. The mobile phase consisted of acetonitrile-ammonium dihydrogen phosphate buffer solution (0.01 M, pH=2.5, containing 0.8% tetra-n-butyl ammonium hydroxide). The detector wavelength was set at 254 nm. Under these conditions, separation of three compounds was achieved in less than 10 min. The effect of two metal salts and metal concentration on peak area of EDTA was investigated. The pH effect on retention of EDTA and sorbic acid was studied. The method showed linearity for EDTA, sorbic acid, and diclofenac in the ranges of 2.5-100.0, 5.0-200.0, and 20.0-120.0 μg/mL, respectively. The within- and between-day relative standard deviations ranged from 0.52 to 1.94%, 0.50 to 1.34%, and 0.78 to 1.67% for EDTA, sorbic acid, and diclofenac, respectively. The recovery of EDTA, sorbic acid, and diclofenac from pharmaceutical preparation ranged from 96.0-102.0%, 99.7-101.5%, to 97.0-102.5%, respectively. To the best of our knowledge, this is the first report about simultaneous determination of EDTA, sorbic acid, and diclofenac.
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Affiliation(s)
- Rouhollah Heydari
- />Department of Chemistry, Faculty of Science, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
| | - Mojtaba Shamsipur
- />Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran
| | - Nasim Naleini
- />Department of Chemistry, Faculty of Science, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
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Chen T, Li Z, Mo W, Hu FR. [Simultaneous quantitative determination of multicomponents in tablets based on terahertz time-domain spectroscopy]. Guang Pu Xue Yu Guang Pu Fen Xi 2013; 33:1220-1225. [PMID: 23905323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Terahertz time-domain spectroscopy (THz-TDS) combined with chemometric modeling methods was used to perform quantitative analysis of both active pharmaceutical ingredient (API) and excipient concentrations of multicomponent pharmaceutical mixtures. The THz spectra of ternary mixtures formulated with anhydrous theophylline, lactose monohydrate, magnesium stearate and quaternary mixtures composed of acetaminophen, lactose monohydrate, microcrystalline cellulose and soluble starch were measured using THz-TDS. Two multivariate calibration methods, principal component regression (PCR) and partial least squares (PLS) regression, were employed to correlate THz absorbance spectra with the pharmaceutical tablet concentrations. Both API and excipient concentrations of mixtures were predicted simultaneously, and the PLS method provides better result than PCR method. The correlation coefficients of calibration (Rcal) and validation (Rval) for ternary mixtures' components, anhydrous theophylline and lactose monohydrate, were all more than 0.98. The Rcal and Rval for quaternary mixtures' components, acetaminophen, lactose monohydrate, microcrystalline cellulose and soluble starch, were all more than 0.93, 0.98, 0.63 and 0.86, respectively. Experimental results show that THz-TDS combined with chemometrics is feasible in nondestructive quantitative analysis of multicomponent mixtures, and it can be widely applied in the fields of pharmaceutical analysis and others.
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Affiliation(s)
- Tao Chen
- School of Mechano-electronic Engineering, Xidian University, Xi'an 710071, China.
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Hsu FY, Yu DS, Huang CC. Development of pH-sensitive pectinate/alginate microspheres for colon drug delivery. J Mater Sci Mater Med 2013; 24:317-323. [PMID: 23104086 DOI: 10.1007/s10856-012-4798-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 10/15/2012] [Indexed: 06/01/2023]
Abstract
The purposes of this study were to develop and evaluate calcium pectinate/alginate microspheres (PAMs) and to exploit their pH-sensitive properties for colon-targeted delivery of encapsulated cisplatin. PAMs were prepared using an electrospraying method. The PAMs, as cores, were then coated with Eudragit S100 using a polyelectrolyte multilayer coating technique in aqueous solution. The morphology of the microspheres was observed under scanning electron microscopy. In vitro drug release studies were performed in simulated gastrointestinal fluid, and the results indicated that approximately 5 % of the cisplatin was released from the Eudragit S100-coated PAMs, and 51 % of the cisplatin was released from the uncoated PAMs at 1 h. The release of cisplatin from the Eudragit S100-coated PAMs was more sustained in simulated gastric fluid than in simulated intestinal fluid due to the increased solubility of the coating polymer in media with pH >7.0. Drug release from the Eudragit S100-coated PAMs was best described by the Higuchi's square root model. From these results, it was concluded that Eudragit S100-coated PAMs are a potential carrier for delivery of cisplatin to the colon.
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Affiliation(s)
- Fu-Yin Hsu
- Department of Life Sciences, National Taiwan Ocean University, Keelung, Taiwan, ROC.
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33
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Brittain HG. The comprehensive profiling of drug substances and pharmaceutical excipients. Preface. Profiles Drug Subst Excip Relat Methodol 2013; 38:xi. [PMID: 23668412 DOI: 10.1016/b978-0-12-407691-4.10000-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Larkin PJ, Santangelo M, Šašiċ S. Internal multiple-scattering hole-enhanced Raman spectroscopy: improved backscattering Fourier transform Raman sampling in pharmaceutical tablets utilizing cylindrical-conical holes. Appl Spectrosc 2012; 66:892-902. [PMID: 22800376 DOI: 10.1366/12-06677] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The benefits of Raman signal enhancement and improved measurement precision are demonstrated using 180° backscattering Fourier transform Raman (FT-Raman) spectroscopy from drilled cylindrical-conical holes within pharmaceutical tablet cores. Multiple scattering of the incident laser light within the holes results in an increased Raman signal due to the larger Raman sampling volume. This is important for overcoming typical sub-sampling issues encountered when employing FT-Raman backscattering of heterogeneous pharmaceutical tablets. Hole depth and diameter were found to be important experimental parameters and were optimized to yield the greatest signal enhancement. The FT-Raman spectra collected using backscattering from cylindrical-conical holes is compared to typical 180° backscattering from flat surfaces using tablet cores of Excedrin® and Vivarin®. Raman chemical images are used to establish a representative sampling area. We observe a three- to five-fold increase in the Raman intensity and a two-fold improvement in the measurement precision when sampling from cylindrical-conical holes rather than classic backscattering from flat tablet cores. Self-absorption effects on analyte band ratios are negligible in the fingerprint region but are more significant at the higher near-infrared (NIR) absorbances found in the C-H/O-H/-N-H stretching region. The sampling technique will facilitate developing quantitative FT-Raman methods for application to pharmaceutical tablets using the fingerprint spectral region.
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Affiliation(s)
- Peter J Larkin
- Bristol-Myers Squibb Company, New Brunswick, NJ 08903, USA.
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Jablan J, Szalontai G, Jug M. Comparative analysis of zaleplon complexation with cyclodextrins and hydrophilic polymers in solution and in solid state. J Pharm Biomed Anal 2012; 71:35-44. [PMID: 22898722 DOI: 10.1016/j.jpba.2012.07.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 07/19/2012] [Accepted: 07/24/2012] [Indexed: 11/20/2022]
Abstract
The aim of this work was to investigate the potential synergistic effect of water-soluble polymers (hypromellose, HPMC and polyvinylpyrrolidone, PVP) on zaleplon (ZAL) complexation with parent β-cyclodextrin (βCD) and its randomly methylated derivative (RAMEB) in solution and in solid state. The addition of HPMC to the complexation medium improved ZAL complexation and solubilization with RAMEB (K(ZAL/RAMEB)=156±5M(-1) and K(ZAL/RAMEB/HPMC)=189±8M(-1); p<0.01), while such effect was not observed for βCD (K(ZAL/βCD)=112±2M(-1) and K(ZAL/βCD/HPMC)=119±8M(-1); p>0.05). Although PVP increased the ZAL aqueous solubility from 0.22 to 0.27mg/mL, it did not show any synergistic effects on ZAL solubilization with the cyclodextrins tested. Binary and ternary systems of ZAL with βCD, RAMEB and HPMC were prepared by spray-drying. Differential scanning calorimetry, X-ray powder diffraction and scanning electron microscopy demonstrated a partial ZAL amorphization in spray-dried binary and ternary systems with βCD, while the drug was completely amorphous in all samples with RAMEB. Furthermore, inclusion complex formation in all systems prepared was confirmed by solid-state NMR spectroscopy. The in vitro dissolution rate followed the rank order ZAL/RAMEB/HPMC>ZAL/RAMEB=ZAL/βCD/HPMC>ZAL/βCD≫ZAL, clearly demonstrating the superior performance of RAMEB on ZAL complexation in the solid state and its synergistic effect with HPMC on drug solubility. Surprisingly, when loaded into tablets made with insoluble microcrystalline cellulose, RAMEB complexes had no positive effect on drug dissolution, because HPMC and RAMEB acted as a binders inside the tablets, prolonging their disintegration. Oppositely, the formulation with mannitol, a soluble excipient, containing a ternary RAMEB system, released the complete drug-dose in only 5min, clearly demonstrating its suitability for the development of immediate-release oral formulation of ZAL.
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Affiliation(s)
- Jasna Jablan
- Department of Analytical Chemistry, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
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Yip WL, Gausemel I, Sande SA, Dyrstad K. Strategies for multivariate modeling of moisture content in freeze-dried mannitol-containing products by near-infrared spectroscopy. J Pharm Biomed Anal 2012; 70:202-11. [PMID: 22824636 DOI: 10.1016/j.jpba.2012.06.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 06/08/2012] [Accepted: 06/20/2012] [Indexed: 11/19/2022]
Abstract
Accurate determination of residual moisture content of a freeze-dried (FD) pharmaceutical product is critical for prediction of its quality. Near-infrared (NIR) spectroscopy is a fast and non-invasive method routinely used for quantification of moisture. However, several physicochemical properties of the FD product may interfere with absorption bands related to the water content. A commonly used stabilizer and bulking agent in FD known for variation in physicochemical properties, is mannitol. To minimize this physicochemical interference, different approaches for multivariate correlation between NIR spectra of a FD product containing mannitol and the corresponding moisture content measured by Karl Fischer (KF) titration have been investigated. A novel method, MIPCR (Main and Interactions of Individual Principal Components Regression), was found to have significantly increased predictive ability of moisture content compared to a traditional PLS approach. The philosophy behind the MIPCR is that the interference from a variety of particle and morphology attributes has interactive effects on the water related absorption bands. The transformation of original wavelength variables to orthogonal scores gives a new set of variables (scores) without covariance structure, and the possibility of inclusion of interaction terms in the further modeling. The residual moisture content of the FD product investigated is in the range from 0.7% to 2.6%. The mean errors of cross validated prediction of models developed in the investigated NIR regions were reduced from a range of 24.1-27.6% for traditional PLS method to 15.7-20.5% for the MIPCR method. Improved model quality by application of MIPCR, without the need for inclusion of a large number of calibration samples, might increase the use of NIR in early phase product development, where availability of calibration samples is often limited.
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Affiliation(s)
- Wai Lam Yip
- University of Oslo, School of Pharmacy, Department of Pharmacy, P.O. Box 1068 Blindern, 0316 Oslo, Norway.
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Kelley K. Phthalates in medicinal products, with Katherine Kelley. Interview by Ashley Ahearn. Environ Health Perspect 2012; 120. [PMID: 22489295 DOI: 10.1289/ehp.trp030112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Kelley KE, Hernández-Díaz S, Chaplin EL, Hauser R, Mitchell AA. Identification of phthalates in medications and dietary supplement formulations in the United States and Canada. Environ Health Perspect 2012; 120:379-84. [PMID: 22169271 PMCID: PMC3295354 DOI: 10.1289/ehp.1103998] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Accepted: 12/08/2011] [Indexed: 05/17/2023]
Abstract
BACKGROUND In animal studies, some ortho-phthalates, including di(2-ethylhexyl) phthalate (DEHP) and di-n-butyl phthalate (DBP), have been shown to be reproductive and developmental toxicants. Human studies show widespread population exposure to background levels of phthalates. Limited evidence suggests that particularly high exposure levels may result from orally ingested medicinal products containing phthalates as excipients (inactive ingredients). OBJECTIVE In this study we aimed to identify and describe the scope of prescription (RX) and nonprescription (over-the-counter; OTC) medicinal products and dietary supplements marketed in the United States and Canada since 1995 that include phthalates as excipients. METHODS We used lists of modified-release drug products to identify potential drug products. Inclusion of phthalates was verified using available electronic databases, print references, published package inserts, product packages, and direct communication from manufacturers. Additional products were identified using Internet searches utilizing keywords for phthalates. RESULTS Based on labeling information, 6 RX drug products included DBP as an excipient, and 45 specified the use of diethyl phthalate (DEP). Phthalate polymers with no known toxicity--hypromellose phthalate (HMP), cellulose acetate phthalate (CAP), and polyvinyl acetate phthalate (PVAP)--were included in 75 RX products. Three OTC drug and dietary supplement products listed DBP, 64 listed DEP, and > 90 indicated inclusion of polymers. CONCLUSIONS Numerous RX and OTC drug products and supplements from a wide range of therapeutic categories may use DBP or DEP as excipients in oral dosage forms. The potential effects of human exposure to these phthalates through medications are unknown and warrant further investigation.
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Affiliation(s)
- Katherine E Kelley
- Slone Epidemiology Center at Boston University, Boston, Massachusetts 02215, USA.
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Tillett T. Mining label data: assessing the presence of ortho-phthalates in pharmaceuticals and dietary supplements. Environ Health Perspect 2012; 120:A123. [PMID: 22381148 PMCID: PMC3295373 DOI: 10.1289/ehp.120-a123b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Jasprica I, Mrsić N, Dragić T, Cetina-Cizmek B. Determination of meglumine in pharmaceutical formulations using high performance liquid chromatography. Pharmazie 2011; 66:916-919. [PMID: 22312693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Four different approaches were followed for the development of a HPLC method for the determination of meglumine in solid dosage formulations: derivatization of meglumine prior to HPLC analysis, the use of an ion-pairing reagent in the mobile phase, the use of charged surface hybrid stationary phase and the use of a column designed for carbohydrate separations. The method using anionic pairing reagent in the mobile phase was shown to be suitable for the quantitative determination of meglumine in solid dosage forms. The HPLC separation was achieved on an Agilent Eclipse XDB-C18 column (150 mm x 4.6 mm, 3.5 microm particle size) using a mobile phase with octane-1-sulfonic acid. The method was validated and validation included the following studies: selectivity, precision (repeatability), linearity and accuracy. During validation experiments RID and DAD detectors were used.
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Affiliation(s)
- I Jasprica
- PLIVA Croatia Ltd., Research and Development, Zagreb, Croatia
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Coggins CRE, Liu J, Merski JA, Werley MS, Oldham MJ. A comprehensive evaluation of the toxicology of cigarette ingredients: aliphatic and aromatic carboxylic acids. Inhal Toxicol 2011; 23 Suppl 1:119-40. [PMID: 21651432 DOI: 10.3109/08958378.2010.549528] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Aromatic and aliphatic carboxylic acids are present in tobacco and tobacco smoke. OBJECTIVE A battery of tests was used to compare the toxicity of mainstream smoke from experimental cigarettes containing eight aromatic and aliphatic carboxylic acids and the salt of one acid that were added individually at three different levels (lowest and highest target inclusions were 100 and 90,000 ppm, respectively). MATERIALS AND METHODS Mainstream smoke from cigarettes containing each of the test ingredients was evaluated using analytical chemistry and assays to measure in vitro cytotoxicity (neutral red uptake) and Salmonella (five strains) mutagenicity. For four of the compounds (citric, lactic, benzoic acids, and sodium benzoate), 90-day rodent inhalation studies were also performed. RESULTS Although sporadic statistically significant differences in some experimental cigarette smoke constituents occurred, none resulted in significant changes in mutagenicity or cytotoxicity responses, nor in responses measured in the inhalation studies, except for lactic acid (LA). Inclusion of LA resulted in dose-dependent increase in water and caused a dose-dependent decrease in cytotoxicity. Incorporation of LA into cigarettes resulted in several dose-related reductions in histopathology, which were largely restricted to the nasal passages. Incorporation of LA also ameliorated some of the typical decrease in body weight gain seen in cigarette smoke-exposed rats. CONCLUSIONS Inclusion of these ingredients at exaggerated use levels resulted in sporadic dose-related and treatment effects for some smoke constituents, but no toxicological response was noted in the in vitro and in vivo tests performed.
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Abstract
CONTEXT Cocoa-derived ingredients are used in cigarette tobacco. OBJECTIVE A battery of tests was used to compare toxicity of mainstream smoke from experimental cigarettes containing different added levels of cocoa-derived ingredients. MATERIALS AND METHODS Five cocoa-derived ingredients chocolate (CH), cocoa (COC), cocoa-grand prix black (CGPB), cocoa nibs tincture (CNT) and cocoa shells extract (CSE) were added individually to experimental cigarettes at three different levels. Smoke from each of the experimental cigarette types was evaluated using analytical chemistry; in vitro cytotoxicity and mutagenicity testing were performed for four of the five compounds. For CH, COC and CNT, 90-day smoke inhalation studies were performed with 6-week recovery periods. RESULTS No consistent changes were found in the analytical chemistry results. Results of the cytotoxicity and mutagenicity were unaffected by any of the ingredients. Two of the three inhalation studies showed very few differences between the groups. The inhalation study with COC showed several increases in mean histopathology severity scores in groups exposed to different levels of COC, compared with the controls. These apparent effects of COC on histopathology lesion severity scores were only present in a single sex and none were dose-related, which is not consistent with a true increase in biological activity. Also there were effectively no differences in the patterns of recovery for any of the compounds. CONCLUSIONS Even at high inclusion levels there was a lack of toxicological response in these COC derived ingredients.
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Abstract
CONTEXT Two ammonia compounds, diammonium phosphate and ammonium hydroxide, are typically used in the processing or flavoring of tobacco used in the manufacture of cigarettes. OBJECTIVE A battery of tests was used to compare the toxicity of mainstream smoke from experimental cigarettes containing different added levels of diammonium phosphate (target maximal inclusion level, 50,000 ppm) or both ammonium hydroxide (target maximal inclusion level 11,160 ppm) and diammonium phosphate. MATERIALS AND METHODS The tests included analytical chemistry, with over 40 constituents in mainstream cigarette smoke; in vitro bacterial (Salmonella) mutagenicity and cytotoxicity (neutral red uptake) assays, and 90-day smoke inhalation studies using rats. Diammonium phosphate acted as a burn retardant, and consequently, the highest planned inclusion level could not be used. Ammonium hydroxide could not be added to cigarettes at meaningfully different levels. RESULTS Apart from a substantial reduction in smoke concentrations of formaldehyde seen in the smoke chemistry analysis and animal exposure characterization, there were very few endpoints in any of the analyses that showed significant differences as a result of the addition of either of the two ammonia compounds. These differences, when present, occurred only sporadically, with no evidence of any dose-response relationships. CONCLUSION The results of these experiments show that the ammonia compounds, diammonium phosphate and ammonium hydroxide, when added to cigarette tobacco, even at high inclusion levels, have minimal toxicological sequelae.
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Gaworski CL, Wagner KA, Morton MJ, Oldham MJ. Insights from a multi-year program designed to test the impact of ingredients on mainstream cigarette smoke toxicity. Inhal Toxicol 2011; 23 Suppl 1:172-83. [PMID: 21545299 DOI: 10.3109/08958378.2010.546440] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Cigarette tobacco ingredients may alter the distribution of chemical constituents present in smoke. When considering the toxicological relevance of potential ingredient-related effects on chemical and biological measurements assessing cigarette smoke toxicity, it is critical to understand the intrinsic variability of tobacco and cigarette smoke that is influenced by the environmental conditions during growing, agricultural practices during preparation, cigarette manufacturing tolerances, and stability of the assay methods. OBJECTIVE To understand possible effects of ingredients on cigarette smoke toxicity, various chemical and biological endpoints were measured in smoke from experimental cigarettes (added ingredient) to the intrinsic variability of control cigarettes (no added ingredient). MATERIALS AND METHODS Data were collected during a multi-year program testing a variety of cigarette ingredients from several chemical classes. Chemical analysis of mainstream cigarette smoke,and biological procedures (Salmonella mutagenicity, cytotoxicity, and smoke inhalation) were performed using validated and controlled laboratory methods. The within-study and temporal variation of control cigarettes manufactured in parallel with experimental cigarettes was calculated and used to measure intrinsic variability. RESULTS The overwhelming majority of data generated from experimental cigarettes fell within the experiment variability represented by the pooled standard error of the entire multi-year dataset for the control cigarettes. CONCLUSION The results of this evaluation add to a growing body of the literature regarding a weight of evidence assessment of cigarette ingredient toxicity. When assessed against the variability of assay methodology, natural agricultural change, and manufacturing control, the ingredients studied here demonstrated little relevant influence on the mainstream cigarette smoke toxicity endpoints measured.
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Coggins CRE, Frost-Pineda K, Smith DC, Oldham MJ. A comprehensive evaluation of the toxicology of cigarette ingredients: aromatic and aliphatic alcohol compounds. Inhal Toxicol 2011; 23 Suppl 1:141-56. [PMID: 21651433 DOI: 10.3109/08958378.2010.551552] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Various aromatic and aliphatic alcohol compounds are found in tobacco and tobacco smoke. OBJECTIVE A battery of tests was used to compare the toxicity of mainstream smoke from experimental cigarettes containing eight aromatic and aliphatic alcohol compounds that were added individually to experimental cigarettes at three different levels. The lowest target inclusion level was 100 ppm and the highest level was 24,400 ppm. MATERIALS AND METHODS Mainstream smoke from each of the cigarette types was evaluated using analytical chemistry and assays to measure in vitro cytotoxicity (neutral red uptake) and Salmonella (five strains) mutagenicity. For three of the compounds (benzyl alcohol, propyl paraben, and rum flavor), 90-day smoke inhalation studies with 6-week recovery periods were also performed using rats. RESULTS Inclusion of eugenol produced several dose-related reductions in concentrations of selected smoke constituents. Cytotoxicity and mutagenicity were unaffected by any of the test ingredients, except for dose-related reductions in cytotoxicity of the gas vapor phase produced by the inclusion of eugenol. The three smoke inhalation studies showed a few sporadic differences between the groups and there were no differences in the patterns of recovery for any of the ingredients. CONCLUSIONS Despite using exaggerated inclusion levels of the eight aliphatic and aromatic alcohol compounds in experimental cigarettes, there was minimal toxicological response, which is consistent with published reports of studies using mixtures of compounds added to tobacco.
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Coggins CRE, Sena EJ, Langston TB, Oldham MJ. A comprehensive evaluation of the toxicology of cigarette ingredients: aromatic carbonyl compounds. Inhal Toxicol 2011; 23 Suppl 1:90-101. [PMID: 21534858 DOI: 10.3109/08958378.2010.542581] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Aromatic carbonyls are typically used in the processing or flavoring of tobacco used in the manufacture of cigarettes. OBJECTIVE A battery of tests was used to compare the toxicity of mainstream smoke from experimental cigarettes containing different added levels of aromatic carbonyl compounds. MATERIALS AND METHODS Ten aromatic carbonyl compounds, nine of which have been reported in tobacco or in tobacco smoke, were added individually to experimental cigarettes at three different levels. The tenth compound, not found naturally in tobacco, was 2-phenoxyethyl isobutyrate. The lowest target inclusion level was 100 ppm and the highest was 10,000 ppm. Smoke from each of the 10 experimental cigarette types was evaluated using analytical chemistry, in vitro cytotoxicity, and mutagenicity testing. For one of the compounds, ethyl vanillin, a 90-day smoke inhalation study using rats was also performed. RESULTS Smoke chemistry was effectively unchanged by the addition of any of the compounds. Cytotoxicity, assessed by the neutral red uptake assay and using both gas-vapor and particulate phases of smoke, was unaffected by the addition of any of the test compounds. Mutagenicity, assessed by five strains of Salmonella typhimurium treated with smoke condensate, also was unaffected by any of the test compounds. In the rat inhalation study, there were effectively no differences between cigarettes without added ethyl vanillin and cigarettes containing ~8000 ppm of ethyl vanillin. CONCLUSION Even at the exaggerated inclusion levels in cigarette tobacco used in these tests, no adverse toxicological responses occurred for any of aromatic carbonyl compounds tested.
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Coggins CRE, Edmiston JS, Jerome AM, Langston TB, Sena EJ, Smith DC, Oldham MJ. A comprehensive evaluation of the toxicology of cigarette ingredients: essential oils and resins. Inhal Toxicol 2011; 23 Suppl 1:41-69. [PMID: 21651429 DOI: 10.3109/08958378.2010.543188] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT A total of 32 essential oils and resins were added individually to experimental cigarettes. OBJECTIVE A battery of tests was used to compare the toxicity of mainstream smoke from these experimental cigarettes. The lowest target inclusion level was 100 ppm and the highest was 100,000 ppm. MATERIALS AND METHODS Smoke from each of the experimental cigarette was evaluated using analytical chemistry and in vitro bacterial (Salmonella, five strains) mutagenicity and cytotoxicity (neutral red uptake) assays. For seven of the ingredients (carob bean, carob bean extract, carrageenan, chamomile flower Hungarian oil, guar gum, peppermint oil, and spearmint oil), 90-day smoke inhalation studies with rats were also performed. RESULTS In general, inclusion levels resulted in minimal changes in smoke chemistry; the exceptions were PO and SO, where reductions to 40-60% of control values were noted, possibly indicating a tobacco displacement effect. Cytotoxicity and mutagenicity were unaffected by any of the test ingredients, except for a dose-related reduction in cytotoxicity for SO. There were very few statistically significant differences within any of the seven inhalation studies; when present, the differences were sporadic and inconsistent between sexes. The addition of SO appeared to depress body weight gain and increase the atrophy of olfactory epithelia, but only in males. CONCLUSION The essential oils and resins tested here as ingredients in experimental cigarettes show minimal toxicological sequelae, even at high inclusion levels. The highest inclusion level for SO showed some equivocal responses.
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Coggins CRE, Jerome AM, Edmiston JS, Oldham MJ. A comprehensive evaluation of the toxicology of cigarette ingredients: aliphatic carbonyl compounds. Inhal Toxicol 2011; 23 Suppl 1:102-18. [PMID: 21651431 DOI: 10.3109/08958378.2010.545842] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Aliphatic carbonyl compounds are used as ingredients in cigarette tobacco or cigarette filters. OBJECTIVE A battery of tests was used to compare toxicity of mainstream smoke from experimental cigarettes containing 15 aliphatic carbonyl compounds that were added individually to experimental cigarettes at three different levels. MATERIALS AND METHODS Smoke from experimental and control cigarettes were evaluated using analytical chemistry, in vitro cytotoxicity (neutral red uptake), and mutagenicity (five bacterial strains) studies. For one compound, glycerol triacetate (GTA), two 90-day inhalation studies were also performed, using different inclusion levels into either tobacco or cigarette filter. RESULTS Several smoke constituent concentrations were reduced with the highest inclusion level of GTA in tobacco; incorporation of GTA into the filter, and the other compounds into tobacco, produced effectively no changes. Cytotoxicity was reduced by the highest inclusion of GTA into tobacco for both gas-vapor and particulate phases of smoke; incorporation of GTA into the filter, and the other compounds into tobacco, showed no changes. Mutagenicity was reduced by the middle and high inclusion levels of GTA into tobacco (TA1537 strain with S9); incorporation of GTA into the filter, and the other compounds into tobacco, showed no changes. CONCLUSION Inclusion of GTA in tobacco at 100,000 ppm reduced the biological effects of the smoke in the various test systems reported in this study, although inclusion into the filter did not appear to have any major effect on the endpoints studied. The other 14 aliphatic carbonyl compounds that were tested lacked a toxicological response.
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Abstract
CONTEXT Three heterocyclic nitrogen compounds, 2,3-diethylpyrazine (DEP), 2,3,5,6-tetramethylpyrazine (TMP), and 2-acetyl pyridine (AP), are naturally present in tobacco and are also added to tobacco as flavor ingredients. OBJECTIVE A battery of tests was used to compare the toxicity of mainstream smoke from experimental cigarettes containing the three heterocyclic nitrogen compounds added individually at three different levels. The lowest target inclusion level of the ingredient was 10 ppm, and the highest was 10,000 ppm. MATERIAL AND METHODS Smoke from experimental and control cigarettes was evaluated in analytical smoke chemistry, in vitro cytotoxicity, and mutagenicity assays. RESULTS The cigarettes with added DEP produced some minor (approximately 10%) changes in smoke chemistry when compared with the cigarettes containing no DEP. Smoke chemistry was effectively unchanged by the addition of either AP or TMP. Cytotoxicity, assessed by the neutral red uptake assay using both gas-vapor and particulate phases of smoke, was unaffected by the addition of any of the test ingredients. Mutagenicity, assessed in five strains of Salmonella treated with mainstream cigarette smoke condensate, also was unaffected by any of the test ingredients. CONCLUSIONS Despite the exaggerated ingredient levels relative to commercial-use levels, there was a lack of a toxicological response for the three heterocyclic nitrogen compounds in the test systems used.
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