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Rodrillo KAM, Costa DM, Viana SFC, Shahbazi H, Augusti R, Ifa DR. Forensic application of sandpaper spray ionization mass spectrometry (SPS-MS): Direct analysis of solid pharmaceutical formulations and edible cannabis products. J Forensic Sci 2024; 69:2209-2221. [PMID: 39101585 DOI: 10.1111/1556-4029.15592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 08/06/2024]
Abstract
In this work, we employed a new ambient ionization mass spectrometry technique, sandpaper spray mass spectrometry (SPS-MS), as an efficient tool to analyze pills and tablets of pharmaceutical formulations. The following samples were analyzed: regulators of blood pressure, cholesterol, and diabetes, and drugs for the treatment of erectile dysfunction (ED). Additionally, a hard candy of Cannabis sativa containing Δ9-tetrahydrocannabinol (Δ9-THC) and its related isomer cannabidiol (CBD) was also evaluated. The surfaces of the samples, without any prior treatment, were sanded onto triangular-cut sandpaper, and full MS scans (and MS/MS) were acquired in both positive and negative ionization modes. SPS-MS (and MS/MS) allowed for prompt detection of the active pharmaceutical ingredients (APIs) in each formulation. Other components of the formulations, added as excipients, were also tentatively identified. The results described herein indicate that the SPS-MS technique can be applied to fast screening of pills and tablets being potentially used as an efficient tool to detect counterfeit pharmaceutical and illicit products, a current issue of increasing concern.
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Affiliation(s)
| | - Diego M Costa
- Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Sarah F C Viana
- Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Hasti Shahbazi
- Department of Chemistry, York University, Toronto, Ontario, Canada
| | - Rodinei Augusti
- Department of Chemistry, York University, Toronto, Ontario, Canada
- Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Demian R Ifa
- Department of Chemistry, York University, Toronto, Ontario, Canada
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2
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Abd Rashid N, Salim YS, Abdul Halim SI, Harun MK, Ong CH, Chan CH. FTIR conformity analysis and performance testings of fresh, aged and expired polymeric paints under different storage conditions. PURE APPL CHEM 2023. [DOI: 10.1515/pac-2022-0901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Abstract
This study aims to correlate the molecular structure consistency of unmixed paints and the performance of 2-pack three-layer protective dried coatings (mixed and cured paints) in various aging conditions (fresh, aged and expired paints) stored under different conditions. All the physical tests (density, solid content, viscosity and sag resistance) of paints fulfil the required specifications. However, these tests cannot tell if the chemical formulation of retained paints (aged and expired) has undergone changes due to storage. The conformity analysis by Fourier-transform infrared (FTIR) spectroscopy coupled with squared derivative algorithm was employed for molecular structure analysis comparison of the fresh and retained paints. FTIR results show high degree of similarity (r), with r ≥ 0.900 for the properly stored retained paints when compared against its fresh paints using high sensitivity compare algorithm. This finding is validated with a paired Student’s t-test and it turns out that the r values of properly stored paints are not statistically different from the fresh paints. Moreover, the performance test (pull off adhesion and salt-spray) of dried coatings indicates good durability when the properly stored retained paints with high degree of structural similarity are applied on the substrate according to end user specifications. This approach offers a practical solution for the paint manufacturer and user to employ a rapid and non-destructive FTIR structural analysis for the confirmation of structural consistency of retained paints before application instead of disposing the polymeric paint without verification.
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Affiliation(s)
- Norsyazlin Abd Rashid
- Faculty of Applied Sciences , Universiti Teknologi MARA , Shah Alam , Selangor , Malaysia
| | - Yoga Sugama Salim
- Faculty of Applied Sciences , Universiti Teknologi MARA , Shah Alam , Selangor , Malaysia
| | | | - Mohamad Kamal Harun
- Faculty of Applied Sciences , Universiti Teknologi MARA , Shah Alam , Selangor , Malaysia
| | - Chong Hup Ong
- Norimax Sdn. Bhd. , 2, Jalan TPP 5/17, Taman Perindustrian Puchong, Seksyen 5 , 47160 Puchong , Selangor , Malaysia
| | - Chin Han Chan
- Faculty of Applied Sciences , Universiti Teknologi MARA , Shah Alam , Selangor , Malaysia
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3
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Bailey MJ, de Puit M, Romolo FS. Surface Analysis Techniques in Forensic Science: Successes, Challenges, and Opportunities for Operational Deployment. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2022; 15:173-196. [PMID: 35167323 DOI: 10.1146/annurev-anchem-061020-124221] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Surface analysis techniques have rapidly evolved in the last decade. Some of these are already routinely used in forensics, such as for the detection of gunshot residue or for glass analysis. Some surface analysis approaches are attractive for their portability to the crime scene. Others can be very helpful in forensic laboratories owing to their high spatial resolution, analyte coverage, speed, and specificity. Despite this, many proposed applications of the techniques have not yet led to operational deployment. Here, we explore the application of these techniques to the most important traces commonly found in forensic casework. We highlight where there is potential to add value and outline the progress that is needed to achieve operational deployment. We consider within the scope of this review surface mass spectrometry, surface spectroscopy, and surface X-ray spectrometry. We show how these tools show great promise for the analysis of fingerprints, hair, drugs, explosives, and microtraces.
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Affiliation(s)
- Melanie J Bailey
- Department of Chemistry, Stag Hill Campus, University of Surrey, Guildford, United Kingdom;
| | - Marcel de Puit
- Netherlands Forensic Institute, The Hague, The Netherlands
- Delft University of Technology, Delft, The Netherlands
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4
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Comparison of genuine, generic and counterfeit Cialis tablets using vibrational spectroscopy and statistical methods. J Pharm Biomed Anal 2021; 206:114383. [PMID: 34587570 DOI: 10.1016/j.jpba.2021.114383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/06/2021] [Accepted: 09/15/2021] [Indexed: 12/21/2022]
Abstract
The dubious online market in phosphodiesterase type 5 inhibitors is growing on a global scale. Counterfeit medical products can represent health issues for the user and cause medical mistrust. Within this work, genuine Cialis containing the active pharmaceutical ingredient (API) tadalafil, its generics available in the Czech Republic and the Cialis tablets from questionable online pharmacies were analysed. The methods of infra-red and Raman spectroscopy were used for the identification of the counterfeit tablets and for the verification of their API and excipients. All 9 tablets from online pharmacies were counterfeit with 2 of them even containing a different API (sildenafil, vardenafil). In addition, Raman mapping was used to determine the API and excipients' distribution and, in combination with multivariate data analysis, to separate similar tablets in clusters and to identify the outliers. Scanning electron microscopy of the samples revealed that the process of a wet granulation of micronized API was used during the formulation of the tablets. This comprehensive approach of analysis can be used for advanced exploration of the dubious samples of various medical products.
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5
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de Abreu Fontes J, Anzanello MJ, Brito JBG, Bucco GB, Fogliatto FS, Puglia FDP. Combining wavelength importance ranking to the random forest classifier to analyze multiclass spectral data. Forensic Sci Int 2021; 328:110998. [PMID: 34551367 DOI: 10.1016/j.forsciint.2021.110998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/04/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
Near Infrared (NIR) is a type of vibrational spectroscopy widely used in different areas to characterize substances. NIR datasets are comprised of absorbance measures on a range of wavelengths (λ). Typically noisy and correlated, the use of such datasets tend to compromise the performance of several statistical techniques; one way to overcome that is to select portions of the spectra in which wavelengths are more informative. In this paper we investigate the performance of the Random Forest (RF) classifier associated with several wavelength importance ranking approaches on the task of classifying product samples into categories, such as quality levels or authenticity. Our propositions are tested using six NIR datasets comprised of two or more classes of food and pharmaceutical products, as well as illegal drugs. Our proposed classification model, an integration of the χ2 ranking score and the RF classifier, substantially reduced the number of wavelengths in the dataset, while increasing the classification accuracy when compared to the use of complete datasets. Our propositions also presented good performance when compared to competing methods available in the literature.
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Affiliation(s)
- Juliana de Abreu Fontes
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Av. Osvaldo Aranha, 99 - 5° andar, Porto Alegre, RS, Brazil.
| | - Michel José Anzanello
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Av. Osvaldo Aranha, 99 - 5° andar, Porto Alegre, RS, Brazil
| | - João B G Brito
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Av. Osvaldo Aranha, 99 - 5° andar, Porto Alegre, RS, Brazil
| | - Guilherme Brandelli Bucco
- Escola de Administração - Universidade Federal do Rio Grande do Sul, Washington Luiz, 855, Porto Alegre, RS, Brazil
| | - Flavio Sanson Fogliatto
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Av. Osvaldo Aranha, 99 - 5° andar, Porto Alegre, RS, Brazil
| | - Fábio do Prado Puglia
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Av. Osvaldo Aranha, 99 - 5° andar, Porto Alegre, RS, Brazil
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6
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Sanhueza MI, Castillo RDP, Meléndrez M, von Plessing C, Tereszczuk J, Osorio G, Peña-Farfal C, Fernández M, Neira JY. Confocal laser scanning microscopy as a novel tool of hyperspectral imaging for the localization and quantification of fluorescent active principles in pharmaceutical solid dosage forms. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Proof-of-Concept of Detection of Counterfeit Medicine through Polymeric Materials Analysis of Plastics Packaging. Polymers (Basel) 2021; 13:polym13132185. [PMID: 34209331 PMCID: PMC8271851 DOI: 10.3390/polym13132185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/25/2021] [Accepted: 06/27/2021] [Indexed: 11/16/2022] Open
Abstract
The detection of counterfeit pharmaceuticals is always a major challenge, but the early detection of counterfeit medicine in a country will reduce the fatal risk among consumers. Technically, fast laboratory testing is vital to develop an effective surveillance and monitoring system of counterfeit medicines. This study proposed the combination of Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) and Differential Scanning Calorimetry (DSC) for the quick detection of counterfeit medicines, through the polymer analysis of blister packaging materials. A sample set containing three sets of original and counterfeit medicine was analyzed using ATR-FTIR and DSC, while the spectra from ATR-FTIR were employed as a fingerprint for the polymer characterization. Intending to analyze the polymeric material of each sample, DSC was set at a heating rate of 10 °C min-l and within a temperature range of 0- 400 °C, with nitrogen as a purge gas at a flow rate of 20 ml min-an. The ATR-FTIR spectra revealed the chemical characteristics of the plastic packaging of fake and original medicines. Further analysis of the counterfeit medicine's packaging with DSC exhibited a distinct difference from the original due to the composition of polymers in the packaging material used. Overall, this study confirmed that the rapid analysis of polymeric materials through ATR-FTIR and comparing DSC thermograms of the plastic in their packaging effectively distinguished counterfeit drug products.
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Reis NFA, Silva LFG, Souza MACE, Fialho SL, Souza Moreira CP, Oliveira Andrade MV, Paula WX, Gloria MBA, Pianetti GA, Fernandes C. UHPLC for quality evaluation of genuine and illegal medicines containing sildenafil citrate and tadalafil. J Chromatogr Sci 2021; 59:30-39. [PMID: 33107906 DOI: 10.1093/chromsci/bmaa073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 07/24/2020] [Accepted: 09/06/2020] [Indexed: 11/14/2022]
Abstract
One of the highest incidences of illegal drug products is related to phosphodiesterase-5 inhibitors, used in treatment of erectile dysfunction, including those containing sildenafil citrate and tadalafil. In this context, comprehensive evaluation of the quality of genuine and illegal medicines was performed. A simple and rapid ultra-high performance liquid chromatography (UHPLC-UV) method to quantify sildenafil and tadalafil in the presence of six degradation products was developed and validated. Sildenafil and tadalafil were submitted to forced degradation. The separation was carried out on a Kinetex C18 (50 × 2.1 mm; 1.7 μm) column with mobile phase composed of acetonitrile and aqueous triethylamine solution. The calibration curves were linear in the range of 14-126 μg mL-1 for sildenafil citrate and 4-36 μg mL-1 for tadalafil and the method proved to be selective, precise, accurate and robust. Sildenafil degraded in oxidative media, whereas tadalafil degraded in acidic, alkaline and oxidative environment. The chemical structures and the mechanisms for the formation of the main degradation products were proposed by UHPLC coupled to tandem mass spectrometry. The UHPLC-UV method was applied in the pharmaceutical analysis of genuine and seized medicines. Some of them did not meet quality standards, mainly due to contents below specifications and the large variation on contents between units within a batch.
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Affiliation(s)
- Naialy Fernandes Araújo Reis
- Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Luiz Felipe Gomes Silva
- Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Mateus Araújo Castro E Souza
- Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Sílvia Ligório Fialho
- Serviço de Desenvolvimento Tecnológico Farmacêutico, Diretoria de Pesquisa e Desenvolvimento, Fundação Ezequiel Dias, Rua Conde Pereira Carneiro 80, 30510010 Belo Horizonte, MG, Brazil
| | - Carolina Paula Souza Moreira
- Serviço de Desenvolvimento Tecnológico Farmacêutico, Diretoria de Pesquisa e Desenvolvimento, Fundação Ezequiel Dias, Rua Conde Pereira Carneiro 80, 30510010 Belo Horizonte, MG, Brazil
| | - Marcus Vinicius Oliveira Andrade
- Setor Técnicoe Científico, Superintendência de Polícia Federal, Minas Gerais, Rua Nascimento Gurgel 30, 30430340 Belo Horizonte, MG, Brazil
| | - Washington Xavier Paula
- Instituto de Criminalística, Polícia Civil, Minas Gerais, Avenida Augusto de Lima 1833, 30190-002 Belo Horizonte, MG, Brazil
| | - Maria Beatriz Abreu Gloria
- Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Gerson Antônio Pianetti
- Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Christian Fernandes
- Laboratório de Controle de Qualidade de Medicamentos e Cosméticos, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
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9
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Romolo FS, Sarilar M, Antoine J, Mestria S, Strano Rossi S, Gallidabino MD, Soares de Souza GM, Chytry P, Ferraz Dias J. Ion beam analysis (IBA) and instrumental neutron activation analysis (INAA) for forensic characterisation of authentic Viagra® and of sildenafil-based illegal products. Talanta 2021; 224:121829. [DOI: 10.1016/j.talanta.2020.121829] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/25/2020] [Accepted: 10/28/2020] [Indexed: 11/26/2022]
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10
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Lemos VF, Ortiz RS, Limberger RP. Forensic analysis of anabolic steroids tablets composition using attenuated total reflection Fourier transform infrared microspectroscopy (µATR-FTIR) mapping. J Forensic Sci 2021; 66:837-845. [PMID: 33502006 DOI: 10.1111/1556-4029.14671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 12/21/2020] [Accepted: 01/05/2021] [Indexed: 11/27/2022]
Abstract
The use of falsified and unregistered drugs is a worldwide public health problem. Because these global market products usually do not follow the Good Manufacturing Practices required by health legislation, its composition may be completely different from the original or may contain relevant concentrations of impurities and toxic contaminants. Since anabolic steroids are among the main irregular therapeutic classes seized in Brazil, here we propose a new methodology for analyzing these products, in tablets form, using Attenuated Total Reflection Fourier Transform Infrared Microspectroscopy (µATR-FTIR) mapping. Spectra were acquired from solid tablets by attenuated total reflection, through point mapping methodology. In data processing, a characteristic absorption band for each Active Pharmaceutical Ingredient (API) was integrated and plotted to create its distribution map. This technique was applied in an unprecedented way for the forensic analysis of anabolic steroids and proved to be effective in distinguishing falsified products based on the detection of their APIs. It was possible to detect APIs in 26 out of 30 samples, five of which were classified as falsified only through µATR-FTIR analysis. We were able to create distribution maps of the detected substances associating the microspectroscopic results with characteristic band integration method, which can be used to detect substances and to study samples' homogeneity. We concluded that this methodology is promising for the analysis of anabolic steroid tablets, and can be used in a complementary way with techniques already consolidated in forensic laboratory routine for a better classification of questioned samples between authentic and falsified ones.
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Affiliation(s)
- Vanessa Ferreira Lemos
- General Institute of Forensics of Rio Grande do Sul - IGP-RS, Porto Alegre, RS, Brazil.,Department of Analysis, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil
| | - Rafael Scorsatto Ortiz
- Rio Grande do Sul Superintendence, Brazilian Federal Police, Porto Alegre, RS, Brazil.,Brazilian National Institute of Forensic Science and Technology - INCT FORENSE, Porto Alegre, RS, Brazil
| | - Renata Pereira Limberger
- Department of Analysis, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil.,Brazilian National Institute of Forensic Science and Technology - INCT FORENSE, Porto Alegre, RS, Brazil
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Casagrande F, Dégardin K, Ross A. Protein NMR of biologicals: analytical support for development and marketed products. JOURNAL OF BIOMOLECULAR NMR 2020; 74:657-671. [PMID: 32350692 DOI: 10.1007/s10858-020-00318-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Application of NMR spectroscopy to derive in-depth characterization of structure and dynamical properties of biomolecules is well established nowadays in many laboratories. Most of these methods rest on the availability of protein labeled with stable isotopes like 13C and 15N. In this report examples are presented on the application of NMR spectroscopic methods to characterize biopharmaceutical proteins in cases no isotope labeled material are available. This is typically found in protein samples used in the development of formulations and production processes. Another important focus of this report is the application of NMR methodology in the field of counterfeit drugs of biologicals and biosimilars. Especially here, NMR does offer relevant structural and quantitative data due to the high versatility of the NMR equipment. An excurse regarding the high medical relevance for a detailed spectroscopic analysis of counterfeits will be presented.
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Affiliation(s)
- Fabio Casagrande
- Roche Pharmaceutical Research & Early Development, Lead Discovery, Roche Innovation Center Basel, Basel, Switzerland.
| | - Klara Dégardin
- Roche Pharmaceutical Quality Control for Commercial Bulk Products, Complaints and Counterfeits Group, Kaiseraugst, Switzerland
| | - Alfred Ross
- Roche Pharmaceutical Research & Early Development, Pre-Clinical CMC, Roche Innovation Center Basel, Basel, Switzerland
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12
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Brito JBG, Bucco GB, John DK, Ferrão MF, Ortiz RS, Mariotti KC, Anzanello MJ. Wavenumber selection based on Singular Value Decomposition for sample classification. Forensic Sci Int 2020; 309:110191. [PMID: 32092622 DOI: 10.1016/j.forsciint.2020.110191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 01/30/2020] [Accepted: 02/07/2020] [Indexed: 11/29/2022]
Abstract
The dissemination of falsified medicines is a public health risk. Techniques such as attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy are commonly adopted for fraudulent drug detection. However, the spectrum generated by the ATR-FTIR typically results in hundreds of wavenumbers, reducing the performance of classification methods aimed at discriminating between authentic and falsified medicines. This article proposes a novel method for selecting a reduced size subset of wavenumbers that improves the classifier performance. The singular value decomposition SVD is used to generate a wavenumber importance index. An iterative process creates k-nearest neighbor (KNN) models by adding the wavenumbers in a decreasing order according to the importance index. Wavenumbers that increase classification accuracy are selected. When applied to Cialis® ATR-FTIR data, the proposed approach retained average 0.51% of the original wavenumbers with 100% accurate classifications; as for the Viagra® data set, the method yielded perfect classifications retaining average 0.17% of the original wavenumbers.
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Affiliation(s)
- João B G Brito
- Federal University of Rio Grande do Sul - Department of Industrial Engineering, Av. Osvaldo Aranha, 99 - 5° andar, Porto Alegre, RS, Brazil.
| | - Guilherme B Bucco
- Federal University of Rio Grande do Sul - School of Administration, Washington Luiz, 855, Porto Alegre, RS, Brazil.
| | - Danielle K John
- Federal University of Rio Grande do Sul - Department of Inorganic Chemistry, Chemistry Institute, Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil.
| | - Marco F Ferrão
- Instituto Nacional de Ciência e Tecnologia - Bioanalítca (INCT - Bioanalítica), Cidade Universitária Zeferino Vaz, Campinas, SP, Brazil.
| | - Rafael S Ortiz
- Brazilian Federal Police - Technical and Scientifical Division, Av. Ipiranga, 1365, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Brazil.
| | - Kristiane C Mariotti
- Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Brazil; Federal University of Rio Grande do Sul - Department of Pharmacy, Av. Ipiranga, 2752, Porto Alegre, RS, Brazil.
| | - Michel J Anzanello
- Federal University of Rio Grande do Sul - Department of Industrial Engineering, Av. Osvaldo Aranha, 99 - 5° andar, Porto Alegre, RS, Brazil.
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13
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Soares F, Anzanello MJ, Fogliatto FS, Ortiz RS, Mariotti KC, Ferrão MF. Enhancing counterfeit and illicit medicines grouping via feature selection and X-ray fluorescence spectrometry. J Pharm Biomed Anal 2019; 174:198-205. [PMID: 31174131 DOI: 10.1016/j.jpba.2019.05.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/27/2019] [Accepted: 05/29/2019] [Indexed: 11/30/2022]
Abstract
In this paper, we propose a novel framework to select the most relevant X-Ray Fluorescence (XRF) energy values (i.e., features) to enhance the clustering (grouping) of counterfeit and illicit medical tablets. The framework is based on the integration of multidimensional scaling (MDS) and Procrustes analysis (PA) multivariate techniques. MDS provides a projection of the original data into a lower dimension, while PA finds a projection matrix from the original data. Such outputs give rise to a feature importance index that guides an iterative feature selection process; after each feature is inserted in the subset, an optimization procedure based on a greedy search method is carried out to maximize the clustering quality assessed through the Silhouette Index (SI). The inorganic chemical fingerprinting of 41 commercial samples (Viagra®, Cialis®, Lazar®, Libiden®, Maxfil®, Plenovit®, Potent 75®, Rigix®, V-50®, Vimax® and Pramil®) and 56 seized counterfeit samples (Viagra and Cialis) was used to validate the proposed framework. From the original 2048 data points in the full spectra, we identified a subset comprised of 41 energy values that substantially improved clustering quality; the obtained groups were assessed by visual inspection of the PCA plots.
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Affiliation(s)
- Felipe Soares
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Michel J Anzanello
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Brazil.
| | - Flavio S Fogliatto
- Departamento de Engenharia de Produção e Transportes - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rafael S Ortiz
- Setor Técnico-Científico, Superintendência da Polícia Federal, Porto Alegre/RS, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Brazil
| | - Kristiane C Mariotti
- Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Brazil; Departamento de Farmácia - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Marco F Ferrão
- Programa de Pós-Graduação em Química, Instituto de Química - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e Tecnologia Forense (INCT Forense), Brazil
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14
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Romolo FS, Salvini A, Zelaschi F, Oddone M, Odoardi S, Mestria S, Strano Rossi S. Instrumental neutron activation analysis (INAA) and liquid chromatography (LC) coupled to high resolution mass spectrometry (HRMS) characterisation of sildenafil based products seized on the Italian illegal market. Forensic Sci Int Synerg 2019; 1:126-136. [PMID: 32411964 PMCID: PMC7221474 DOI: 10.1016/j.fsisyn.2019.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 11/21/2022]
Abstract
The commerce of illegal and counterfeit medicinal products on internet is a serious criminal problem. Drugs for erectile dysfunction such as phosphodiesterase type 5 inhibitor are the most commonly counterfeited medicines in Europe. The search of possible toxic chemical substances in seized products is needed. Moreover, the profiling of the material can be the source of relevant forensic information. For the first time a combined approach based on liquid chromatography (LC) coupled to high resolution mass spectrometry (HRMS) and instrumental neutron activation analysis (INAA) is proposed and tested, allowing characterisation of both authentic and illegal pharmaceuticals containing sildenafil seized in Italy. LC-HRMS allowed the detection and identification of unknown impurities not reported on labels in illegal products and the quantitation of the sildenafil. INAA showed to be suitable to provide both qualitative and quantitative information for forensic purposes on 23 elements, allowing discrimination between legal and illegal products.
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Affiliation(s)
| | - Andrea Salvini
- Laboratory of Applied Nuclear Energy, University of Pavia, Italy
- Radiochemistry Area – Chemistry Department, Università di Pavia, Italy
| | - Fabio Zelaschi
- Laboratory of Applied Nuclear Energy, University of Pavia, Italy
- Radiochemistry Area – Chemistry Department, Università di Pavia, Italy
| | - Massimo Oddone
- Laboratory of Applied Nuclear Energy, University of Pavia, Italy
- Radiochemistry Area – Chemistry Department, Università di Pavia, Italy
| | - Sara Odoardi
- Forensic Toxicology Laboratory, Institute of Public Health, F. Policlinico Gemelli IRCCS Roma - Università Cattolica del Sacro Cuore, Italy
| | - Serena Mestria
- Forensic Toxicology Laboratory, Institute of Public Health, F. Policlinico Gemelli IRCCS Roma - Università Cattolica del Sacro Cuore, Italy
| | - Sabina Strano Rossi
- Forensic Toxicology Laboratory, Institute of Public Health, F. Policlinico Gemelli IRCCS Roma - Università Cattolica del Sacro Cuore, Italy
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15
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Wilczyński S, Koprowski R, Stolecka-Warzecha A, Duda P, Deda A, Ivanova D, Kiselova-Kaneva Y, Błońska-Fajfrowska B. The use of microtomographic imaging in the identification of counterfeit medicines. Talanta 2019; 195:870-875. [DOI: 10.1016/j.talanta.2018.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/30/2018] [Accepted: 12/05/2018] [Indexed: 11/26/2022]
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16
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de Freitas SC, dos Santos MA, Berneira LM, Ortiz RS, de Pereira CM. Microwave-assisted extraction and differential scanning calorimetry in the chemical identification of sliming agents apprehended in the south region of Brazil. Sci Justice 2019; 59:190-198. [DOI: 10.1016/j.scijus.2018.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 10/29/2018] [Accepted: 11/04/2018] [Indexed: 02/09/2023]
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17
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Santos A, Dutra L, Menezes L, Santos M, Barison A. Forensic NMR spectroscopy: Just a beginning of a promising partnership. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.07.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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18
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Interval importance index to select relevant ATR-FTIR wavenumber Intervals for falsified drug classification. J Pharm Biomed Anal 2018; 158:494-503. [DOI: 10.1016/j.jpba.2018.06.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 06/11/2018] [Accepted: 06/23/2018] [Indexed: 11/22/2022]
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19
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Lawson G, Ogwu J, Tanna S. Quantitative screening of the pharmaceutical ingredient for the rapid identification of substandard and falsified medicines using reflectance infrared spectroscopy. PLoS One 2018; 13:e0202059. [PMID: 30096202 PMCID: PMC6086453 DOI: 10.1371/journal.pone.0202059] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/26/2018] [Indexed: 01/29/2023] Open
Abstract
The World Health Organization suggests that approximately 10% of medicines worldwide are either falsified or substandard with higher figures in low and middle income countries. Such poor quality medicines can seriously harm patients and pose a threat to the economy worldwide. This study investigates attenuated total reflectance-fourier transform infrared (ATR-FTIR) spectroscopy as a simple and rapid method for determination of drug content in tablet dosage forms. Paracetamol was used as the model pharmaceutical ingredient. Spectra of standard mixtures of paracetamol with different excipients formed the basis for multivariate PLS based quantitative analysis of simulated tablet content using different selected infrared absorbance bands. Calibration methods using ATR-FTIR were compared with the ATR-FTIR and conventional ultraviolet spectroscopic analyses of real tablet samples and showed that the paracetamol/microcrystalline cellulose mixtures gave optimum results for all spectral bands tested. The quantitative data for band 1524-1493cm-1 was linear (R2 ˃ 0.98; LOQ ≥ 10%w/w tablet). Global examples of paracetamol tablets were tested using this protocol and 12% of the tablet samples examined was identified as substandard. Each sample analysis was completed in just a few minutes. ATR-FTIR can therefore be used in the rapid screening of tablet formulations. The simplicity of the proposed method makes it appropriate for use in low and middle income countries where analytical facilities are not available.
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Affiliation(s)
- Graham Lawson
- Leicester School of Pharmacy, Faculty of Health and Life Sciences, De Montfort University, Leicester, United Kingdom
| | - John Ogwu
- Leicester School of Pharmacy, Faculty of Health and Life Sciences, De Montfort University, Leicester, United Kingdom
| | - Sangeeta Tanna
- Leicester School of Pharmacy, Faculty of Health and Life Sciences, De Montfort University, Leicester, United Kingdom
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20
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Králík F, Jirmásek P, Kuchař M, Setnička V. Chiroptical and vibrational spectroscopic study of genuine and counterfeit medicines containing tadalafil. Chirality 2018; 30:560-567. [PMID: 29419887 DOI: 10.1002/chir.22828] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 01/10/2018] [Accepted: 01/10/2018] [Indexed: 11/09/2022]
Abstract
The production and distribution of counterfeit pharmaceuticals present a serious problem worldwide. This is true especially in case of phosphodiesterase type 5 inhibitors for treating erectile dysfunction, where consumers often prefer buying them anonymously from unverified sources. In this study, genuine and counterfeit Cialis® 20 mg tablets were analyzed by electronic circular dichroism, vibrational circular dichroism, and infrared spectroscopy. The characteristic spectral patterns were identified by comparison with the spectra of tadalafil standard as an active pharmaceutical ingredient, and its presence was confirmed in all samples. The amount of tadalafil, however, was markedly lower in the case of counterfeit tablet as the observed band intensities were considerably lower. No other significant differences between the genuine and counterfeit tablets were revealed. Ab initio density functional theory calculations provided a detailed description of the stable conformers of tadalafil in a solution and enabled thorough interpretation of the experimental spectra.
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Affiliation(s)
- František Králík
- Department of Analytical Chemistry, University of Chemistry and Technology, Prague, Czech Republic
| | - Patrik Jirmásek
- Department of Analytical Chemistry, University of Chemistry and Technology, Prague, Czech Republic
| | - Martin Kuchař
- Forensic Laboratory of Biologically Active Substances, University of Chemistry and Technology, Prague, Czech Republic.,Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Czech Republic
| | - Vladimír Setnička
- Department of Analytical Chemistry, University of Chemistry and Technology, Prague, Czech Republic
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21
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Ewing AV, Kazarian SG. Infrared spectroscopy and spectroscopic imaging in forensic science. Analyst 2018; 142:257-272. [PMID: 27905577 DOI: 10.1039/c6an02244h] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Infrared spectroscopy and spectroscopic imaging, are robust, label free and inherently non-destructive methods with a high chemical specificity and sensitivity that are frequently employed in forensic science research and practices. This review aims to discuss the applications and recent developments of these methodologies in this field. Furthermore, the use of recently emerged Fourier transform infrared (FT-IR) spectroscopic imaging in transmission, external reflection and Attenuated Total Reflection (ATR) modes are summarised with relevance and potential for forensic science applications. This spectroscopic imaging approach provides the opportunity to obtain the chemical composition of fingermarks and information about possible contaminants deposited at a crime scene. Research that demonstrates the great potential of these techniques for analysis of fingerprint residues, explosive materials and counterfeit drugs will be reviewed. The implications of this research for the examination of different materials are considered, along with an outlook of possible future research avenues for the application of vibrational spectroscopic methods to the analysis of forensic samples.
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Affiliation(s)
- Andrew V Ewing
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
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22
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Calvo NL, Maggio RM, Kaufman TS. Characterization of pharmaceutically relevant materials at the solid state employing chemometrics methods. J Pharm Biomed Anal 2018; 147:538-564. [DOI: 10.1016/j.jpba.2017.06.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/08/2017] [Accepted: 06/12/2017] [Indexed: 11/28/2022]
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23
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Dégardin K, Desponds A, Roggo Y. Protein-based medicines analysis by Raman spectroscopy for the detection of counterfeits. Forensic Sci Int 2017; 278:313-325. [DOI: 10.1016/j.forsciint.2017.07.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/21/2017] [Accepted: 07/11/2017] [Indexed: 11/25/2022]
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24
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Coelho Neto J, Lisboa FL. ATR-FTIR characterization of generic brand-named and counterfeit sildenafil- and tadalafil-based tablets found on the Brazilian market. Sci Justice 2017; 57:283-295. [DOI: 10.1016/j.scijus.2017.04.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 04/03/2017] [Accepted: 04/20/2017] [Indexed: 12/21/2022]
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25
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Mateescu C, Popescu AM, Radu GL, Onisei T, Raducanu AE. Spectroscopic and Spectrometric Methods Used for the Screening of Certain Herbal Food Supplements Suspected of Adulteration. Adv Pharm Bull 2017; 7:251-259. [PMID: 28761827 PMCID: PMC5527239 DOI: 10.15171/apb.2017.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 05/11/2017] [Accepted: 05/15/2017] [Indexed: 11/17/2022] Open
Abstract
Purpose: This study was carried out in order to find a reliable method for the fast detection of adulterated herbal food supplements with sexual enhancement claims. As some herbal products are advertised as "all natural", their "efficiency" is often increased by addition of active pharmaceutical ingredients such as PDE-5 inhibitors, which can be a real health threat for the consumer.
Methodes: Adulterants, potentially present in 50 herbal food supplements with sexual improvement claims, were detected using 2 spectroscopic methods - Raman and Fourier Transform Infrared - known for reliability, reproductibility, and an easy sample preparation. GC-MS technique was used to confirm the potential adulterants spectra.
Results: About 22% (11 out of 50 samples) of herbal food supplements with sexual enhancement claims analyzed by spectroscopic and spectrometric methods proved to be "enriched" with active pharmaceutical compounds such as: sildenafil and two of its analogues, tadalafil and phenolphthalein. The occurence of phenolphthalein could be the reason for the non-relevant results obtained by FTIR method in some samples. 91% of the adulterated herbal food supplements were originating from China.
Conclusion: The results of this screening highlighted the necessity for an accurate analysis of all alleged herbal aphrodisiacs on the Romanian market. This is a first such a screening analysis carried out on herbal food supplements with sexual enhancement claims.
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Affiliation(s)
- Cristina Mateescu
- National Office for Medicinal, Aromatic Plants and Bee Products - National Research and Development Institute for Food Bioresources - IBA Bucharest, 6 Dinu Vintila Str., 021102, Bucharest, Romania
| | - Anca Mihaela Popescu
- National Office for Medicinal, Aromatic Plants and Bee Products - National Research and Development Institute for Food Bioresources - IBA Bucharest, 6 Dinu Vintila Str., 021102, Bucharest, Romania.,Faculty of Applied Chemistry and Materials Science - University Politehnica of Bucharest, 1-7 Polizu Str., 011061, Bucharest, Romania
| | - Gabriel Lucian Radu
- Faculty of Applied Chemistry and Materials Science - University Politehnica of Bucharest, 1-7 Polizu Str., 011061, Bucharest, Romania
| | - Tatiana Onisei
- National Office for Medicinal, Aromatic Plants and Bee Products - National Research and Development Institute for Food Bioresources - IBA Bucharest, 6 Dinu Vintila Str., 021102, Bucharest, Romania
| | - Adina Elena Raducanu
- National Office for Medicinal, Aromatic Plants and Bee Products - National Research and Development Institute for Food Bioresources - IBA Bucharest, 6 Dinu Vintila Str., 021102, Bucharest, Romania
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26
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Banas A, Banas K, Kalaiselvi SMP, Pawlicki B, Kwiatek WM, Breese MBH. Is it possible to find presence of lactose in pharmaceuticals? - Preliminary studies by ATR-FTIR spectroscopy and chemometrics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 171:280-286. [PMID: 27541800 DOI: 10.1016/j.saa.2016.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 07/31/2016] [Accepted: 08/03/2016] [Indexed: 06/06/2023]
Abstract
Lactose and saccharose have the same molecular formula; however, the arrangement of their atoms is different. A major difference between lactose and saccharose with regard to digestion and processing is that it is not uncommon for individuals to be lactose intolerant (around two thirds of the population has a limited ability to digest lactose after infancy), but it is rather unlikely to be saccharose intolerant. The pharmaceutical industry uses lactose and saccharose as inactive ingredients of drugs to help form tablets because of their excellent compressibility properties. Some patients with severe lactose intolerance may experience symptoms of many allergic reactions after taking medicine that contains this substance. People who are specifically "allergic" to lactose (not just lactose intolerant) should not use tablets containing this ingredient. Fourier Transform Infrared (FTIR) spectroscopy has a unique chemical fingerprinting capability and plays a significant important role in the identification and characterization of analyzed samples and hence has been widely used in pharmaceutical science. However, a typical FTIR spectrum collected from tablets contains a myriad of valuable information hidden in a family of tiny peaks. Powerful multivariate spectral data processing can transform FTIR spectroscopy into an ideal tool for high volume, rapid screening and characterization of even minor tablet components. In this paper a method for distinction between FTIR spectra collected for tablets with or without lactose is presented. The results seem to indicate that the success of identifying one component in FTIR spectra collected for pharmaceutical composition (that is tablet) is largely dependent on the choice of the chemometric technique applied.
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Affiliation(s)
- A Banas
- Singapore Synchrotron Light Source, 5 Research Link, 117603 Singapore, Singapore.
| | - K Banas
- Singapore Synchrotron Light Source, 5 Research Link, 117603 Singapore, Singapore
| | - S M P Kalaiselvi
- Singapore Synchrotron Light Source, 5 Research Link, 117603 Singapore, Singapore
| | - B Pawlicki
- Gabriel Narutowicz Hospital, Pradnicka 37, 31-202 Krakow, Poland
| | - W M Kwiatek
- Institute of Nuclear Physics PAN, Radzikowskiego 152, 31-342 Krakow, Poland
| | - M B H Breese
- Singapore Synchrotron Light Source, 5 Research Link, 117603 Singapore, Singapore
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27
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Makled S, Nafee N, Boraie N. Nebulized solid lipid nanoparticles for the potential treatment of pulmonary hypertension via targeted delivery of phosphodiesterase-5-inhibitor. Int J Pharm 2016; 517:312-321. [PMID: 27979766 DOI: 10.1016/j.ijpharm.2016.12.026] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/10/2016] [Accepted: 12/10/2016] [Indexed: 12/20/2022]
Abstract
Phosphodiesterase type 5 (PDE-5) inhibitors - among which sildenafil citrate (SC) - play a primary role in the treatment of pulmonary hypertension (PH). Yet, SC can be only administered orally or parenterally with lot of risks. Targeted delivery of SC to the lungs via inhalation/nebulization is mandatory. In this study, solid lipid nanoparticles (SLNs) loaded with SC were prepared and characterized in terms of colloidal, morphological and thermal properties. The amount of drug loaded and its release behavior were estimated as a function of formulation variables. The potential of lipid nanocarriers to retain their properties following nebulization and autoclaving was investigated. In addition, toxicity aspects of plain and loaded SLNs on A549 cells were studied with respect to concentration. Spherical SLNs in the size range (100-250nm) were obtained. Particles ensured high encapsulation efficiency (88-100%) and sustained release of the payload over 24h. Cell-based viability experiments revealed a concentration-dependant toxicity for both plain and loaded SLNs recording an IC50 of 516 and 384μg/mL, respectively. Nebulization with jet nebulizer and sterilization via autoclaving affected neither the colloidal stability of SLNs nor the drug entrapment, proving their potential as pulmonary delivery system. Interaction of SLNs with mucin was a function of the emulsifier coating layer. Results yet seeking clinical evidence - might give promises of new therapy for PH of higher safety, better performance and higher patient compliance.
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Affiliation(s)
- Shaimaa Makled
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, 21521 Alexandria, Egypt
| | - Noha Nafee
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, 21521 Alexandria, Egypt.
| | - Nabila Boraie
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, 21521 Alexandria, Egypt
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28
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Wilczyński S, Koprowski R, Marmion M, Duda P, Błońska-Fajfrowska B. The use of hyperspectral imaging in the VNIR (400-1000nm) and SWIR range (1000-2500nm) for detecting counterfeit drugs with identical API composition. Talanta 2016; 160:1-8. [PMID: 27591580 DOI: 10.1016/j.talanta.2016.06.057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/22/2016] [Accepted: 06/24/2016] [Indexed: 11/16/2022]
Abstract
The risk of death from taking counterfeit drugs is now greater than the probability of dying from malaria and AIDS combined (at least half a million deaths each year). At the same time, counterfeit medicines are falsified more and more "skillfully". According to WHO about 10% of counterfeit drugs are copies of original products. The methods of hyperspectral imaging and image analysis and processing were used to detect counterfeit drugs. Original Viagra® (Pfizer) and counterfeit tablets were compared. Hyperspectral imaging was used to acquire hyperspectral data cubes from both original and counterfeit tablets in the spectral range of 400-2500nm. Spectral parameters for both the original Viagra® and counterfeit drugs were compared. Grey-Level Co-Occurrence Matrix (GLCM) analysis and Principal Component Analysis (PCA) were performed. Hyperspectral analysis of the surface of the original Viagra® and counterfeit tablets demonstrates significant differences in reflectance (maximum difference for 1619.75nm). The GLCM contrast for the falsified drug is on average higher than for the original one 16±4%. GLCM contrast analysis enables to quantify homogeneity of distribution of tablet ingredients and enables to distinguish tablets with identical chemical composition. SWIR (1000-2500nm) hyperspectral imaging has a definite advantage over imaging in VNIR (400-1000nm) - higher wavelength is less sensitive to non-uniform illumination.
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Affiliation(s)
- Sławomir Wilczyński
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, Department of Basic Biomedical Science, Kasztanowa Street 3, Sosnowiec 41-200, Poland.
| | - Robert Koprowski
- Department of Biomedical Computer Systems, University of Silesia, Faculty of Computer Science and Materials Science, Institute of Computer Science, Będzińska Street 39, Sosnowiec 41-200, Poland
| | - Mathieu Marmion
- Specim Spectral Imaging Ltd., Elektroniikkatie 13, 90570 Oulu, Finland
| | - Piotr Duda
- Department of Biomedical Computer Systems, University of Silesia, Faculty of Computer Science and Materials Science, Institute of Computer Science, Będzińska Street 39, Sosnowiec 41-200, Poland
| | - Barbara Błońska-Fajfrowska
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, Department of Basic Biomedical Science, Kasztanowa Street 3, Sosnowiec 41-200, Poland
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29
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Directional reflectance analysis for identifying counterfeit drugs: Preliminary study. J Pharm Biomed Anal 2016; 124:341-346. [DOI: 10.1016/j.jpba.2016.03.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 03/03/2016] [Accepted: 03/04/2016] [Indexed: 11/15/2022]
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30
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Custers D, Cauwenbergh T, Bothy J, Courselle P, De Beer J, Apers S, Deconinck E. ATR-FTIR spectroscopy and chemometrics: An interesting tool to discriminate and characterize counterfeit medicines. J Pharm Biomed Anal 2015; 112:181-9. [DOI: 10.1016/j.jpba.2014.11.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 10/31/2014] [Accepted: 11/04/2014] [Indexed: 11/26/2022]
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31
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Wilczyński S. The use of dynamic thermal analysis to distinguish between genuine and counterfeit drugs. Int J Pharm 2015; 490:16-21. [PMID: 25975231 DOI: 10.1016/j.ijpharm.2015.04.077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/27/2015] [Accepted: 04/29/2015] [Indexed: 10/23/2022]
Abstract
WHO estimates that 10% of drugs are falsified. Economic and health factors arising from the use of counterfeit drugs lead to the development of new methods for distinguishing genuine medicines from falsified ones. The purpose of this study was to develop a new, fast, and inexpensive method to distinguish between original and fake drugs. 10 counterfeit Viagra(®) tablets were compared to 4 original pills (Pfizer). The drugs - both original and fake - were heated to 60°C and then the dynamics of their temperature changes at ambient conditions was tested using a thermal imaging camera. The time constants τ showing the dynamics of temperature changes for Viagra(®) and the falsified drug were determined. The thermokinetic parameters of drugs were determined in the temperature range of 60-22.2°C. Both original and counterfeit tablets had different time constants: 171.44 ± 4.62s and 182.71 ± 4.05 s, respectively. Differences in the dynamics of temperature changes as a function of time are particularly pronounced in the range of t+2 to t+7 min. The comparison of the time constants τ enables to distinguish between genuine and counterfeit drugs. The proposed new method which uses dynamic thermal analysis is an effective, cheap and fast technique to distinguish genuine drugs from counterfeit ones.
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Affiliation(s)
- Sławomir Wilczyński
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, Department of Basic Biomedical Science, Kasztanowa Street 3, Sosnowiec 41-200, Poland.
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32
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Mallah MA, Sherazi STH, Bhanger MI, Mahesar SA, Bajeer MA. A rapid Fourier-transform infrared (FTIR) spectroscopic method for direct quantification of paracetamol content in solid pharmaceutical formulations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 141:64-70. [PMID: 25659814 DOI: 10.1016/j.saa.2015.01.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 01/17/2015] [Accepted: 01/20/2015] [Indexed: 06/04/2023]
Abstract
A transmission FTIR spectroscopic method was developed for direct, inexpensive and fast quantification of paracetamol content in solid pharmaceutical formulations. In this method paracetamol content is directly analyzed without solvent extraction. KBr pellets were formulated for the acquisition of FTIR spectra in transmission mode. Two chemometric models: simple Beer's law and partial least squares employed over the spectral region of 1800-1000 cm(-1) for quantification of paracetamol content had a regression coefficient of (R(2)) of 0.999. The limits of detection and quantification using FTIR spectroscopy were 0.005 mg g(-(1) and 0.018 mg g(-1), respectively. Study for interference was also done to check effect of the excipients. There was no significant interference from the sample matrix. The results obviously showed the sensitivity of transmission FTIR spectroscopic method for pharmaceutical analysis. This method is green in the sense that it does not require large volumes of hazardous solvents or long run times and avoids prior sample preparation.
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Affiliation(s)
- Muhammad Ali Mallah
- National Centre of Excellence in Analytical Chemistry, University of Sindh Jamshoro, Pakistan.
| | | | - Muhammad Iqbal Bhanger
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Pakistan
| | - Sarfaraz Ahmed Mahesar
- National Centre of Excellence in Analytical Chemistry, University of Sindh Jamshoro, Pakistan
| | - Muhammad Ashraf Bajeer
- National Centre of Excellence in Analytical Chemistry, University of Sindh Jamshoro, Pakistan
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33
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Marcelo M, Mariotti K, Ferrão M, Ortiz R. Profiling cocaine by ATR–FTIR. Forensic Sci Int 2015; 246:65-71. [DOI: 10.1016/j.forsciint.2014.11.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 10/31/2014] [Accepted: 11/13/2014] [Indexed: 10/24/2022]
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34
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Muro CK, Doty KC, Bueno J, Halámková L, Lednev IK. Vibrational Spectroscopy: Recent Developments to Revolutionize Forensic Science. Anal Chem 2014; 87:306-27. [DOI: 10.1021/ac504068a] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Claire K. Muro
- Chemistry Department, University at Albany, Albany, New York 12222, United States
| | - Kyle C. Doty
- Chemistry Department, University at Albany, Albany, New York 12222, United States
| | - Justin Bueno
- Chemistry Department, University at Albany, Albany, New York 12222, United States
| | - Lenka Halámková
- Chemistry Department, University at Albany, Albany, New York 12222, United States
| | - Igor K. Lednev
- Chemistry Department, University at Albany, Albany, New York 12222, United States
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J. Anzanello M, S. Ortiz R, Limberger R, Mariotti K. Performance of some supervised and unsupervised multivariate techniques for grouping authentic and unauthentic Viagra and Cialis. EGYPTIAN JOURNAL OF FORENSIC SCIENCES 2014. [DOI: 10.1016/j.ejfs.2014.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Anzanello MJ, Fogliatto FS, Ortiz RS, Limberger R, Mariotti K. Selecting relevant Fourier transform infrared spectroscopy wavenumbers for clustering authentic and counterfeit drug samples. Sci Justice 2014; 54:363-8. [DOI: 10.1016/j.scijus.2014.04.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/28/2014] [Accepted: 04/30/2014] [Indexed: 11/29/2022]
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Anzanello MJ, Ortiz RS, Limberger R, Mariotti K. PLS-DA wavenumber selection for the categorization of medicine samples based on multiple criteria. Forensic Sci Int 2014; 242:111-116. [DOI: 10.1016/j.forsciint.2014.06.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 06/25/2014] [Accepted: 06/27/2014] [Indexed: 10/25/2022]
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Anzanello MJ, Ortiz RS, Limberger R, Mariotti K. A framework for selecting analytical techniques in profiling authentic and counterfeit Viagra and Cialis. Forensic Sci Int 2014; 235:1-7. [DOI: 10.1016/j.forsciint.2013.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 11/08/2013] [Accepted: 12/07/2013] [Indexed: 10/25/2022]
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A multivariate-based wavenumber selection method for classifying medicines into authentic or counterfeit classes. J Pharm Biomed Anal 2013; 83:209-14. [DOI: 10.1016/j.jpba.2013.05.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 04/24/2013] [Accepted: 05/07/2013] [Indexed: 11/19/2022]
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