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Largy E, Alies B, Condesse G, Gaubert A, Livingston T, Gaudin K. Teaching with simulation tools to introduce the basics of analytical chemistry instrumentation. Anal Bioanal Chem 2022; 414:6709-6721. [PMID: 35995876 PMCID: PMC9395844 DOI: 10.1007/s00216-022-04268-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2022] [Indexed: 11/01/2022]
Affiliation(s)
- Eric Largy
- Laboratoire de Chimie Analytique, Collège Des Sciences de La Santé, UFR Des Sciences Pharmaceutiques, University of Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Bruno Alies
- Laboratoire de Chimie Analytique, Collège Des Sciences de La Santé, UFR Des Sciences Pharmaceutiques, University of Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Guillaume Condesse
- Mission d'Appui à la Pédagogie et à l'Innovation, University of Bordeaux, 3ter place de la Victoire, 33076, Bordeaux cedex, France
| | - Alexandra Gaubert
- Laboratoire de Chimie Analytique, Collège Des Sciences de La Santé, UFR Des Sciences Pharmaceutiques, University of Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Thomas Livingston
- Mission d'Appui à la Pédagogie et à l'Innovation, University of Bordeaux, 3ter place de la Victoire, 33076, Bordeaux cedex, France
| | - Karen Gaudin
- Laboratoire de Chimie Analytique, Collège Des Sciences de La Santé, UFR Des Sciences Pharmaceutiques, University of Bordeaux, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France.
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El Hamoui O, Saydé T, Svahn I, Gudin A, Gontier E, Le Coustumer P, Verget J, Barthélémy P, Gaudin K, Battu S, Lespes G, Alies B. Nucleoside-Derived Low-Molecular-Weight Gelators as a Synthetic Microenvironment for 3D Cell Culture. ACS Biomater Sci Eng 2022; 8:3387-3398. [PMID: 35772731 DOI: 10.1021/acsbiomaterials.2c00308] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
For the last few decades, many efforts have been made in developing cell culture methods in order to overcome the biological limitations of the conventional two-dimensional culture. This paradigm shift is driven by a large amount of new hydrogel-based systems for three-dimensional culture, among other systems, since they are known to mimic some living tissue properties. One class of hydrogel precursors has received interest in the field of biomaterials, low-molecular-weight gelators (LMWGs). In comparison to polymer gels, LMWG gels are formed by weak interactions upon an external trigger between the molecular subunits, giving them the ability to reverse the gelation, thus showing potential for many applications of practical interest. This study presents the use of the nucleoside derivative subclass of LMWGs, which are glyco-nucleo-bola-amphiphiles, as a proof of concept of a 3D cell culture scaffold. Physicochemical characterization was performed in order to reach the optimal features to fulfill the requirements of the cell culture microenvironment, in terms of the mechanical properties, architecture, molecular diffusion, porosity, and experimental practicality. The retained conditions were tested by culturing glioblastoma cells for over a month. The cell viability, proliferation, and spatial organization showed during the experiments demonstrate the proof of concept of nucleoside-derived LMWGs as a soft 3D cell culture scaffold. One of the hydrogels tested permits cell proliferation and spheroidal organization over the entire culture time. These systems offer many advantages as they consume very few matters within the optimal range of viscoelasticity for cell culture, and the thermoreversibility of these hydrogels permits their use with few instruments. The LMWG-based scaffold for the 3D cell culture presented in this study unlocked the ability to grow spheroids from patient cells to reach personalized therapies by dramatically reducing the variability of the lattice used.
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Affiliation(s)
- Omar El Hamoui
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France.,Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France
| | - Tarek Saydé
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France.,Université de Limoges, UMR INSERM 1308 CAPTuR, Faculté de Médecine, 87025 Limoges, France
| | - Isabelle Svahn
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US 4, F-33000 Bordeaux, France
| | - Antoine Gudin
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Etienne Gontier
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US 4, F-33000 Bordeaux, France
| | - Philippe Le Coustumer
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France.,Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US 4, F-33000 Bordeaux, France
| | - Julien Verget
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Philippe Barthélémy
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Karen Gaudin
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Serge Battu
- Université de Limoges, UMR INSERM 1308 CAPTuR, Faculté de Médecine, 87025 Limoges, France
| | - Gaëtane Lespes
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France
| | - Bruno Alies
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
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Nguyen PV, Aubry C, Boudaoud N, Gaubert A, Langlois MH, Marchivie M, Gaudin K, Arpin C, Barthélémy P, Kauss T. Oligonucleotide Solid Nucleolipid Nanoparticles against Antibiotic Resistance of ESBL-Producing Bacteria. Pharmaceutics 2022; 14:pharmaceutics14020299. [PMID: 35214036 PMCID: PMC8876242 DOI: 10.3390/pharmaceutics14020299] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/20/2022] [Accepted: 01/25/2022] [Indexed: 02/06/2023] Open
Abstract
Antibiotic resistance has become a major issue in the global healthcare system, notably in the case of Gram-negative bacteria. Recent advances in technology with oligonucleotides have an enormous potential for tackling this problem, providing their efficient intrabacterial delivery. The current work aimed to apply this strategy by using a novel nanoformulation consisting of DOTAU, a nucleolipid carrier, in an attempt to simultaneously deliver antibiotic and anti-resistance oligonucleotides. Ceftriaxone, a third-generation cephalosporin, was formulated with DOTAU to form an ion pair, and was then nanoprecipitated. The obtained solid nanocapsules were characterized using FT-IR, XRD, HPLC, TEM and DLS techniques and further functionalized by the anti-resistance ONα sequence. To obtain an optimal anti-resistance activity and encapsulation yield, both the formulation protocol and the concentration of ONα were optimized. As a result, monodispersed negatively charged nanoparticles of CFX–DOTAU-ONα with a molar ratio of 10:24:1 were obtained. The minimum inhibitory concentration of these nanoparticles on the resistant Escherichia coli strain was significantly reduced (by 75%) in comparison with that of non-vectorized ONα. All aforementioned results reveal that our nanoformulation can be considered as an efficient and relevant strategy for oligonucleotide intrabacterial delivery in the fight against antibiotic resistance.
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Affiliation(s)
- Phuoc Vinh Nguyen
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
| | - Clémentine Aubry
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
| | - Narimane Boudaoud
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
| | - Alexandra Gaubert
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
| | - Marie-Hélène Langlois
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
| | - Mathieu Marchivie
- UMR 5026, University of Bordeaux, CNRS, Bordeaux-INP, ICMCB, 87 Avenue du Dr Albert Schweitzer, CEDEX, 33608 Pessac, France;
| | - Karen Gaudin
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
| | - Corinne Arpin
- MFP, CNRS 5234, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France;
| | - Philippe Barthélémy
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
| | - Tina Kauss
- ARNA, Inserm U1212, CNRS 5320, University of Bordeaux, 146 rue Léo Saignat, CEDEX, 33076 Bordeaux, France; (P.V.N.); (C.A.); (N.B.); (A.G.); (M.-H.L.); (K.G.); (P.B.)
- Correspondence:
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Saydé T, Manczak R, Saada S, Bégaud G, Bessette B, Lespes G, Le Coustumer P, Gaudin K, Dalmay C, Pothier A, Lalloué F, Battu S. Characterization of Glioblastoma Cancer Stem Cells Sorted by Sedimentation Field-Flow Fractionation Using an Ultrahigh-Frequency Range Dielectrophoresis Biosensor. Anal Chem 2021; 93:12664-12671. [PMID: 34491042 DOI: 10.1021/acs.analchem.1c02466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cancer stem cells (CSCs) appear to be an essential target for cancer therapies, in particular, in brain tumors such as Glioblastoma. Nevertheless, their isolation is made difficult by their low content in culture or tumors (<5% of the tumor mass) and is essentially based on the use of fluorescent or magnetic labeling techniques, increasing the risk of differentiation induction. The use of label-free separation methods such as sedimentation field-flow fractionation (SdFFF) is promising, but it becomes necessary to consider a coupling with a detection and characterization method for future identification and purification of CSCs from patient-derived tumors. In this study, we demonstrate for the first time the capability of using an ultrahigh-frequency range dielectrophoresis fluidic biosensor as a detector. This implies an important methodological adaptation of SdFFF cell sorting by the use of a new compatible carrier liquid DEP buffer (DEP-B). After SdFFF sorting, subpopulations derived from U87-MG and LN18 cell lines undergo biological characterization, demonstrating that using DEP-B as a carrier liquid, we sorted by SdFFF subpopulations with specific differentiation characteristics: F1 = differentiated cells/F2 = CSCs. These subpopulations presented high-frequency crossover (HFC) values similar to those measured for standard differentiated (around 110 MHz) and CSC (around 80 MHz) populations. This coupling appeared as a promising solution for the development of an online integration of these two complementary label-free separation/detection technologies.
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Affiliation(s)
- Tarek Saydé
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, Limoges 87025, France.,ARNA, INSERM U1212, UMR CNRS 5320, Université de Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
| | - Rémi Manczak
- XLIM-UMR CNRS 7252, Université de Limoges, 123, avenue Albert Thomas, Limoges 87060 LIMOGES CEDEX, France
| | - Sofiane Saada
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, Limoges 87025, France
| | - Gaelle Bégaud
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, Limoges 87025, France
| | - Barbara Bessette
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, Limoges 87025, France
| | - Gaëtane Lespes
- CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, Université de Pau et des Pays de l'Adour (E2S/UPPA), 2 Avenue Pierre Angot, Pau 64053, France
| | - Philippe Le Coustumer
- Bordeaux Imaging Center, UMS 3420 CNRS-INSERM, Université de Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
| | - Karen Gaudin
- ARNA, INSERM U1212, UMR CNRS 5320, Université de Bordeaux, 146 rue Léo Saignat, Bordeaux 33076, France
| | - Claire Dalmay
- XLIM-UMR CNRS 7252, Université de Limoges, 123, avenue Albert Thomas, Limoges 87060 LIMOGES CEDEX, France
| | - Arnaud Pothier
- XLIM-UMR CNRS 7252, Université de Limoges, 123, avenue Albert Thomas, Limoges 87060 LIMOGES CEDEX, France
| | - Fabrice Lalloué
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, Limoges 87025, France
| | - Serge Battu
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, Limoges 87025, France
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Saydé T, El Hamoui O, Alies B, Gaudin K, Lespes G, Battu S. Biomaterials for Three-Dimensional Cell Culture: From Applications in Oncology to Nanotechnology. Nanomaterials (Basel) 2021; 11:481. [PMID: 33668665 PMCID: PMC7917665 DOI: 10.3390/nano11020481] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 02/07/2023]
Abstract
Three-dimensional cell culture has revolutionized cellular biology research and opened the door to novel discoveries in terms of cellular behavior and response to microenvironment stimuli. Different types of 3D culture exist today, including hydrogel scaffold-based models, which possess a complex structure mimicking the extracellular matrix. These hydrogels can be made of polymers (natural or synthetic) or low-molecular weight gelators that, via the supramolecular assembly of molecules, allow the production of a reproducible hydrogel with tunable mechanical properties. When cancer cells are grown in this type of hydrogel, they develop into multicellular tumor spheroids (MCTS). Three-dimensional (3D) cancer culture combined with a complex microenvironment that consists of a platform to study tumor development and also to assess the toxicity of physico-chemical entities such as ions, molecules or particles. With the emergence of nanoparticles of different origins and natures, implementing a reproducible in vitro model that consists of a bio-indicator for nano-toxicity assays is inevitable. However, the maneuver process of such a bio-indicator requires the implementation of a repeatable system that undergoes an exhaustive follow-up. Hence, the biggest challenge in this matter is the reproducibility of the MCTS and the associated full-scale characterization of this system's components.
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Affiliation(s)
- Tarek Saydé
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges, France;
- ARNA, INSERM U1212, UMR CNRS 5320, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France; (O.E.H.); (B.A.); (K.G.)
| | - Omar El Hamoui
- ARNA, INSERM U1212, UMR CNRS 5320, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France; (O.E.H.); (B.A.); (K.G.)
- CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux (IPREM), UMR 5254, Université de Pau et des Pays de l’Adour (E2S/UPPA), 2 Avenue Pierre Angot, 64053 Pau, France
| | - Bruno Alies
- ARNA, INSERM U1212, UMR CNRS 5320, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France; (O.E.H.); (B.A.); (K.G.)
| | - Karen Gaudin
- ARNA, INSERM U1212, UMR CNRS 5320, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France; (O.E.H.); (B.A.); (K.G.)
| | - Gaëtane Lespes
- CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux (IPREM), UMR 5254, Université de Pau et des Pays de l’Adour (E2S/UPPA), 2 Avenue Pierre Angot, 64053 Pau, France
| | - Serge Battu
- EA3842-CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges, France;
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El Hamoui O, Gaudin K, Battu S, Barthélémy P, Lespes G, Alies B. Self-Assembly of Nucleoside-Derived Low-Molecular-Weight Gelators: A Thermodynamics and Kinetics Study on Different Length Scales. Langmuir 2021; 37:297-310. [PMID: 33350837 DOI: 10.1021/acs.langmuir.0c02894] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Biocompatible materials are of paramount importance in numerous fields. Unlike chemically bridge polymer-based hydrogels, low-molecular-weight gelators can form a reversible hydrogel as their structures rely on noncovalent interaction. Although many applications with this type of hydrogel can be envisioned, we still lack their understanding due to the complexity of their self-assembly process and the difficulty in predicting their behaviors (transition temperature, gelation kinetics, the impact of solvent, etc.). In this study, we extend the investigations of a series of nucleoside-derived gelators, which only differ by subtle chemical modifications. Using a multitechnique approach, we determined their thermodynamic and kinetic features on various scale (molecular to macro) in different conditions. Monitored at the supramolecular level by circular dichroism as well as macroscopic scales by rheology and turbidimetry, we found out that the sol-gel and gel-sol transitions are greatly dependent on the concentration and on the mechanisms that are probed. Self-assembly kinetics depends on hydrogel molecules and is modulated by temperature and solvent. This fundamental study provides insight on the impact of some parameters on the gelation process, such as concentration, cooling rate, and the nature of the solvent.
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Affiliation(s)
- Omar El Hamoui
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
- Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France
| | - Karen Gaudin
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Serge Battu
- EA3842- CAPTuR, GEIST, Faculté de Médecine, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges Cedex, France
| | - Philippe Barthélémy
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
| | - Gaëtane Lespes
- Université de Pau et des Pays de l'Adour (E2S/UPPA) CNRS, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, 2 Avenue Pierre Angot, 64053 Pau Cedex, France
| | - Bruno Alies
- Université de Bordeaux, INSERM U1212, UMR CNRS 5320, F-33076 Bordeaux, France
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Yabré M, Ferey L, Somé TI, Sivadier G, Gaudin K. Development of a green HPLC method for the analysis of artesunate and amodiaquine impurities using Quality by Design. J Pharm Biomed Anal 2020; 190:113507. [PMID: 32846400 DOI: 10.1016/j.jpba.2020.113507] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/24/2020] [Accepted: 07/24/2020] [Indexed: 02/03/2023]
Abstract
Greening analytical methods has become of great interest in the field of pharmaceutical analysis to protect both the operators' health and the environment. In this work, an innovative methodology combining Quality-by-Design (QbD) and Green Chemistry principles was followed to develop a single, green and robust RP-HPLC method for the quantitative analysis of impurities of both artesunate and amodiaquine drugs. Ethanol was selected as the best ecofriendly alternative solvent in substitution to the commonly used organic solvents such as acetonitrile and methanol. To achieve method objectives, resolutions between the 10 peaks were chosen as critical method attributes (CMAs) to be optimized through QbD approach. Based on a quality risk assessment, pH, temperature, and gradient slope were then selected as critical method parameters (CMPs) and a three level full factorial design was used to model the CMAs as function of the CMPs. Response surface methodology associated to Monte Carlo simulations allowed to determine the method operable domain region (MODR), i.e., the multidimensional combination of CMPs where CMAs simultaneously satisfied specifications (Rs ≥ 1.5) with a probability at least equal to 95 %. Inside the MODR, the working point was chosen based on green criteria, involving a mobile phase composed of ethanol and 10 mM acetic acid only as pH modifier. The method was successfully validated for all impurities using accuracy profile methodology, which was fully compliant with the ICH Q2(R1) requirements. Finally, the method was applied to the analysis of amodiaquine and artesunate impurities in raw materials and formulations.
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Affiliation(s)
- Moussa Yabré
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000, Bordeaux, France; Laboratoire de Toxicologie, Environnement et Santé (LATES), Université Joseph Ki-Zerbo, Ouaga, 03 BP 7021, Burkina Faso
| | - Ludivine Ferey
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000, Bordeaux, France
| | - Touridomon Issa Somé
- Laboratoire de Toxicologie, Environnement et Santé (LATES), Université Joseph Ki-Zerbo, Ouaga, 03 BP 7021, Burkina Faso
| | - Guilhem Sivadier
- Centre Humanitaire des Métiers de la Pharmacie, 4 voie militaire des gravanches, 63100, Clermont-Ferrand, France
| | - Karen Gaudin
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000, Bordeaux, France.
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8
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Yabré M, Ferey L, Somé TI, Mercier O, Gaudin K. Green reversed-phase HPLC development strategy: Application to artesunate and amodiaquine analysis. J Sep Sci 2020; 43:4390-4404. [PMID: 33058440 DOI: 10.1002/jssc.202000732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/05/2020] [Accepted: 10/09/2020] [Indexed: 02/03/2023]
Abstract
A green analytical chemistry strategy is described to develop a reversed-phase high-performance liquid chromatography method for amodiaquine and artesunate analysis using ethanol-based mobile phases. This method development was particularly challenging due to the basicity of amodiaquine and low UV absorption of artesunate, leading to peak asymmetry and detection issues, respectively. UV detection concern was even more challenging due to the baseline drift observed with ethanol in gradient mode. Several green pH modifiers were selected for their ecofriendly character and their impact on peak shape and detection was investigated. The screening of various stationary phases (19 columns) appeared as a relevant and necessary approach to reach satisfactory peak shape of basic compounds. To support the results of this study, some additional compounds related to artesunate and amodiaquine structures were included. Methods were optimized and validated using total error approach with a mobile phase composed of ethanol and 10 mM formic acid using three different stationary phases from different manufacturers, providing flexibility of the quality control approach. Method greenness was assessed using the National Environmental Methods Index, the Green Analytical Procedure Index, and the Analytical Eco-Scale. Finally, artesunate and amodiaquine were successfully analyzed in fixed dose combination tablets.
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Affiliation(s)
- Moussa Yabré
- University Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, Bordeaux, F-33000, France.,Laboratoire de Toxicologie, Environnement et Santé (LATES), Université Jospeh Ki-Zerbo, 03 BP 7021, Burkina Faso
| | - Ludivine Ferey
- University Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, Bordeaux, F-33000, France
| | - Touridomon Issa Somé
- Laboratoire de Toxicologie, Environnement et Santé (LATES), Université Jospeh Ki-Zerbo, 03 BP 7021, Burkina Faso
| | | | - Karen Gaudin
- University Bordeaux, CNRS, INSERM, ARNA, UMR 5320, U1212, Bordeaux, F-33000, France
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Yabré M, Ferey L, Sakira AK, Bonmatin C, Fauré C, Somé TI, Gaudin K. Green Analytical Methods of Antimalarial Artemether-Lumefantrine Analysis for Falsification Detection Using a Low-Cost Handled NIR Spectrometer with DD-SIMCA and Drug Quantification by HPLC. Molecules 2020; 25:molecules25153397. [PMID: 32727052 PMCID: PMC7435840 DOI: 10.3390/molecules25153397] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 12/02/2022] Open
Abstract
Two green analytical approaches have been developed for the analysis of antimalarial fixed dose tablets of artemether and lumefantrine for quality control. The first approach consisted of investigating the qualitative performance of a low-cost handheld near-infrared spectrometer in combination with the principal component analysis as an exploratory tool to identify trends, similarities, and differences between pharmaceutical samples, before applying the data driven soft independent modeling of class analogy (DD-SIMCA) as a one-class classifier for proper drug falsification detection with 100% of both sensitivity and specificity in the studied cases. Despite its limited spectral range and low resolution, the handheld device allowed detecting falsified drugs with no active pharmaceutical ingredient and identifying specifically a pharmaceutical tablet brand name. The second approach was the quantitative analysis based on the green and fast RP-HPLC technique using ethanol as a green organic solvent and acetic acid as a green pH modifier. The optimal separation was achieved in 7 min using a mobile phase composed of ethanol 96% and 10 mM of acetic acid pH 3.35 (63:37, v/v). The developed method was validated according to the total error approach based on an accuracy profile, was applied to the analysis of tablets, and allowed confirming falsified drugs detected by spectroscopy.
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Affiliation(s)
- Moussa Yabré
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, 146, Rue Léo Saignat, Bordeaux University, 33076 Bordeaux, France; (M.Y.); (L.F.); (C.B.); (C.F.)
- Laboratoire de Toxicologie, Environnement et Santé (LATES), Université Joseph Ki-Zerbo, Ouaga 03 BP 7021, Burkina Faso; (A.K.S.); (T.I.S.)
| | - Ludivine Ferey
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, 146, Rue Léo Saignat, Bordeaux University, 33076 Bordeaux, France; (M.Y.); (L.F.); (C.B.); (C.F.)
| | - Abdoul Karim Sakira
- Laboratoire de Toxicologie, Environnement et Santé (LATES), Université Joseph Ki-Zerbo, Ouaga 03 BP 7021, Burkina Faso; (A.K.S.); (T.I.S.)
| | - Camille Bonmatin
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, 146, Rue Léo Saignat, Bordeaux University, 33076 Bordeaux, France; (M.Y.); (L.F.); (C.B.); (C.F.)
| | - Clotilde Fauré
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, 146, Rue Léo Saignat, Bordeaux University, 33076 Bordeaux, France; (M.Y.); (L.F.); (C.B.); (C.F.)
| | - Touridomon Issa Somé
- Laboratoire de Toxicologie, Environnement et Santé (LATES), Université Joseph Ki-Zerbo, Ouaga 03 BP 7021, Burkina Faso; (A.K.S.); (T.I.S.)
| | - Karen Gaudin
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, 146, Rue Léo Saignat, Bordeaux University, 33076 Bordeaux, France; (M.Y.); (L.F.); (C.B.); (C.F.)
- Correspondence:
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10
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Barakat F, Gaudin K, Vialet B, Bathany K, Benizri S, Barthélémy P, Ferey L. Analysis of lipid-oligonucleotide conjugates by cyclodextrin-modified capillary zone electrophoresis. Talanta 2020; 219:121204. [PMID: 32887111 DOI: 10.1016/j.talanta.2020.121204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 01/28/2023]
Abstract
Lipid-oligonucleotide (LONs) based bioconjugates represent an emerging class of therapeutic agents, allowing the delivery of therapeutic oligonucleotide sequences. The LON development requests accurate and efficient analytical methods. In this contribution, LON analysis methods were developed in cyclodextrin-modified capillary zone electrophoresis (CD-CZE). The LONs selected in this study feature different structures, including i) the oligonucleotide length (from 10 to 20 nucleotides), ii) the inter-nucleotide linkage chemistry (phosphodiester PDE or phosphorothioate PTO), and iii) the lipidic part: single- (LONsc) or double-chain (LONdc) lipids. In CD-CZE, the effect of several parameters on the electrophoretic peaks was investigated (buffer, CD, and capillary temperature). The binding interaction between LON and Me-β-CD was studied in affinity capillary electrophoresis and revealed a 1:1 LON:CD complex. Non-linear regression and three usual linearization methods (y-reciprocal, x-reciprocal, and double-reciprocal) were used to determine the binding constants (K values of 2.5.104 M-1 and 2.0.104 M-1 for LON PDE and LON PTO, respectively). Quantitative methods with good performances and analysis time lower than 5 min were achieved. Importantly, the developed analysis allows a separation between the i) full-length sequence LONs and their truncated sequences, (n-1), (n-2), and (n-4)-mers and ii) LONsc, LONdc and their corresponding unconjugated oligonucleotides. This work highlights the interest of CD-CZE methods for LON analysis.
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Affiliation(s)
- Fatima Barakat
- ARNA INSERM U1212, CNRS 5320, University of Bordeaux, Bordeaux, 33076, France
| | - Karen Gaudin
- ARNA INSERM U1212, CNRS 5320, University of Bordeaux, Bordeaux, 33076, France.
| | - Brune Vialet
- ARNA INSERM U1212, CNRS 5320, University of Bordeaux, Bordeaux, 33076, France
| | - Katell Bathany
- Chimie et Biologie des Membranes et Nanoobjets (CBMN) UMR 5248 CNRS, Université de Bordeaux, 33600, Pessac, France
| | - Sebastien Benizri
- ARNA INSERM U1212, CNRS 5320, University of Bordeaux, Bordeaux, 33076, France
| | - Philippe Barthélémy
- ARNA INSERM U1212, CNRS 5320, University of Bordeaux, Bordeaux, 33076, France.
| | - Ludivine Ferey
- ARNA INSERM U1212, CNRS 5320, University of Bordeaux, Bordeaux, 33076, France.
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11
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Godet M, Raitiere O, Chopra H, Guignant P, Fauvel C, Gaudin K, Eltchaninoff H, Beuer F. 1409Use of phenomapping to determine response of treatment by sacubitril/valsartan in patients with heart failure with reduced ejection fraction. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Treatment by sacubitril/valsartan decreases mortality, improves KCCQ score and ejection fraction in patients with heart failure with reduced ejection fraction (HF REF), but there is currently no data to predict response to treatment.
Purpose
The purpose of our work was to assess whether unbiased clustering analysis, using dense phenotypic data, could identify phenotypically distinct HF-REF subtypes with good or no response after 6 months of sacubitril/valsartan administration.
Methods
A total of 78 patients in NYHA functional class 2–3 and treated by ACE inhibitor or AAR2, were prospectively assigned to equimolar sacubitril/valsartan replacement. We collected demographic, clinical, biological and imaging continuous variables. Phenotypic domains were imputed with 5 eigenvectors for missing value, then filtered if the Pearson correlation coefficient was >0.6 and standardized to mean±SD of 0±1. Thereafter, we used agglomerative hierarchical clustering for grouping phenotypic variables and patients, then generate a heat map (figure 1). Subsequently, participants were categorized using Penalized Model-Based Clustering. P<0,05 was considered significant.
Results
Mean age was 60.4±13.4 yo and 79.0% patients were males. Mean ejection fraction was 29.3±7.0%. Overall, 16 phenotypic domains were isolated (figure 1) and 3 phenogroups were identified (Table 1). Phenogroup 1 was remarkable by isolated left ventricular involvement (LVTDD 64.3±5.9mm vs 73.9±8.7 in group 2 and 63.8±5.7 in group3, p<0.001) with moderate diastolic dysfunction (DD), no mitral regurgitation (MR) and no pulmonary hypertension (PH). Phenogroups 2 and 3 corresponded to patients with severe PH (TRMV: 2.93±0.47m/s in group 2 and 3.15±0.61m/s in groupe 3 vs 2.16±0.32m/s in group 1), related to severe DD (phenogroup 2) or MR (phenogroup 3). In both phenogroups, the left atrium was significantly enlarged and the right ventricle was remodeled, compared with phenogroup 1. Despite more severe remodeling and more compromised hemodynamic in phenogroups 2 and 3, the echocardiographic response to sacubitril/valsartan was comparable in all groups with similar improvement of EF and reduction of cardiac chambers dimensions (response of treatment, defined by improvement of FE +15% and/or decreased of indexed left ventricule diastolic volume −15% = group 2: 22 (76%); group 3: 18 (60%); group 1: 9 (50%); p=0.17; OR group 2 vs 1: OR=3.14; IC95% [0.9–11.03]; p=0.074; OR group 3 vs 1: OR=1.5; IC95% [0.46–4.87]; p=0.5)). The clinical response was even better in phenogroups 2 and 3 (Group 2: 19 (66%); group 3: 21 (78%) vs group 1: 9 (50%); p=0.05).
Heat map
Conclusion
HF-REF patients with severe diastolic dysfunction, significant mitral regurgitation and elevated pulmonary hypertension by echocardiographic had similar reverse remodeling but better clinical improvement than patients with isolated left ventricular systolic dysfunction.
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Affiliation(s)
- M Godet
- University of Rouen, Rouen, France
| | - O Raitiere
- University Hospital of Rouen, Rouen University Hospital, Department of Cardiology, FHU REMOD-VHF, F76000, Rouen, France
| | - H Chopra
- University Hospital of Rouen, Rouen University Hospital, Department of Cardiology, FHU REMOD-VHF, F76000, Rouen, France
| | - P Guignant
- University Hospital of Rouen, Rouen University Hospital, Department of Cardiology, FHU REMOD-VHF, F76000, Rouen, France
| | - C Fauvel
- University Hospital of Rouen, Rouen University Hospital, Department of Cardiology, FHU REMOD-VHF, F76000, Rouen, France
| | - K Gaudin
- University Hospital of Rouen, Rouen University Hospital, Department of Cardiology, FHU REMOD-VHF, F76000, Rouen, France
| | - H Eltchaninoff
- University Hospital of Rouen, Department of Cardiology, FHU REMOD-VHF, Normandie Univ, UNIROUEN, INSERM U1096, F76000, Rouen, France
| | - F Beuer
- University Hospital of Rouen, Department of Cardiology, Normandie Univ, UNIROUEN, INSERM U1096, F76000, Rouen, France
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12
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Gaudin K, Savoure A. Screening for atrial fibrillation following cryptogenic stroke: Efficacy of implantable Holter, risk factors. Archives of Cardiovascular Diseases Supplements 2019. [DOI: 10.1016/j.acvdsp.2019.02.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Kauss T, Langlois MH, Guyonnet-Dupérat A, Phoeung T, Xie XY, Cartwright A, White N, Gomes M, Gaudin K. Development of Rectodispersible Tablets and Granulate Capsules for the Treatment of Serious Neonatal Sepsis in Developing Countries. J Pharm Sci 2019; 108:2805-2813. [PMID: 30878515 DOI: 10.1016/j.xphs.2019.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 12/19/2018] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 02/05/2023]
Abstract
Current pediatric antibiotic therapies often use oral and parenteral routes of administration. Neither are suitable for treating very sick neonates who cannot take oral medication and may be several hours away from hospital in developing countries. Here, we report on the development of rectal forms of ceftriaxone, a third-generation cephalosporin. Rectodispersible tablets and capsules were developed and successfully passed 6-month accelerated stability tests. Rabbit bioavailability showed plasma concentrations above the minimal inhibitory concentrations for 3 formulations of rectodispersible tablets and 2 formulations of hard capsules. Clinical batches are currently being prepared for human evaluation with the prospect of offering therapeutic alternatives for treating critically ill neonates. This proof of concept for efficient rectal delivery of antibiotics could help the development of other rectal antibiotic treatments and increase options for noninvasive drug development for pediatric patients.
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Affiliation(s)
- Tina Kauss
- Faculty of Pharmacy, University Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France.
| | - Marie-Hélène Langlois
- Faculty of Pharmacy, University Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | - Alice Guyonnet-Dupérat
- Faculty of Pharmacy, University Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | - Thida Phoeung
- Faculty of Pharmacy, University Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | - Xiao Yu Xie
- Faculty of Pharmacy, University Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | | | - Nicholas White
- Nuffield Department of Medicine, Centre for Tropical Medicine, University of Oxford, Oxford, UK; Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Melba Gomes
- World Health Organization, Geneva, Switzerland
| | - Karen Gaudin
- Faculty of Pharmacy, University Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
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14
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Abstract
A novel hybrid bioinspired amphiphile featuring a cytosine moiety, which self-assembles into liposomes can be used to detect silver ions in aqueous media. The coordination of Ag+ ions by the nucleotide moiety increases membrane rigidity, which enhances the fluorescence of a common reporter, Thioflavin T. Ag+ can be sensed even at trace concentrations (3 ppb) with great specificity over other metals ions. These nucleotide based supramolecular structures can be used to detect silver ions in drinking water, demonstrating the robustness of this approach.
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Affiliation(s)
- Bruno Alies
- University of Bordeaux , ARNA Laboratory , F-33000 Bordeaux , France
| | | | - Angéline Noireau
- University of Bordeaux , ARNA Laboratory , F-33000 Bordeaux , France
| | - Karen Gaudin
- University of Bordeaux , ARNA Laboratory , F-33000 Bordeaux , France
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15
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Kowouvi K, Alies B, Gendrot M, Gaubert A, Vacher G, Gaudin K, Mosnier J, Pradines B, Barthelemy P, Grislain L, Millet P. Nucleoside-lipid-based nanocarriers for methylene blue delivery: potential application as anti-malarial drug. RSC Adv 2019; 9:18844-18852. [PMID: 35516884 PMCID: PMC9064961 DOI: 10.1039/c9ra02576f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 05/29/2019] [Indexed: 12/26/2022] Open
Abstract
Nucleolipid supramolecular assemblies are promising Drug Delivery Systems (DDS), particularly for nucleic acids. Studies based on negatively and positively charged nucleolipids (diC16dT and DOTAU, respectively) demonstrated appropriate stability, safety, and purity profile to be used as DDS. Methylene Blue (MB) remains a good antimalarial drug candidate, and could be considered for the treatment of uncomplicated or severe malaria. However, the development of MB as an antimalarial drug has been hampered by a high dose regimen required to obtain a proper effect, and a short plasmatic half life. We demonstrated that nanoparticles formed by nucleolipid encapsulation of MB using diC16dT and DOTAU (MB-NPs) is an interesting approach to improve drug stability and delivery. MB-NPs displayed sizes, PDI, zeta values, and colloidal stability allowing a possible use in intravenous formulations. Nanoparticles partially protected MB from oxido-reduction reactions, thus preventing early degradation during storage, and allowing prolongated pharmacokinetic in plasma. MB-NPs' efficacy, tested in vitro on sensitive or multidrug resistant strains of Plasmodium falciparum, was statistically similar to MB alone, with a slightly lower IC50. This nucleolipid-based approach to protect drugs against degradation represents a new alternative tool to be considered for malaria treatment. Nucleolipids protects methylene blue against reduction (induced by light and chemical reductants) and do not impair antimalarial activity.![]()
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Affiliation(s)
- Koffi Kowouvi
- Univ. Bordeaux
- U1212 INSERM–UMR 5320 CNRS
- ARNA
- ChemBioPharm
- F-33076 Bordeaux
| | - Bruno Alies
- Univ. Bordeaux
- U1212 INSERM–UMR 5320 CNRS
- ARNA
- ChemBioPharm
- F-33076 Bordeaux
| | - Mathieu Gendrot
- Unité de Parasitologie et Entomologie
- Département Microbiologie et Maladies Infectieuses
- Institut de Recherche Biomédicale des Armées
- Marseille
- France
| | - Alexandra Gaubert
- Univ. Bordeaux
- U1212 INSERM–UMR 5320 CNRS
- ARNA
- ChemBioPharm
- F-33076 Bordeaux
| | - Gaelle Vacher
- Univ. Bordeaux
- U1212 INSERM–UMR 5320 CNRS
- ARNA
- ChemBioPharm
- F-33076 Bordeaux
| | - Karen Gaudin
- Univ. Bordeaux
- U1212 INSERM–UMR 5320 CNRS
- ARNA
- ChemBioPharm
- F-33076 Bordeaux
| | - Joel Mosnier
- Unité de Parasitologie et Entomologie
- Département Microbiologie et Maladies Infectieuses
- Institut de Recherche Biomédicale des Armées
- Marseille
- France
| | - Bruno Pradines
- Unité de Parasitologie et Entomologie
- Département Microbiologie et Maladies Infectieuses
- Institut de Recherche Biomédicale des Armées
- Marseille
- France
| | | | | | - Pascal Millet
- Univ. Bordeaux
- U1212 INSERM–UMR 5320 CNRS
- ARNA
- ChemBioPharm
- F-33076 Bordeaux
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16
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Yabré M, Ferey L, Somé IT, Gaudin K. Greening Reversed-Phase Liquid Chromatography Methods Using Alternative Solvents for Pharmaceutical Analysis. Molecules 2018; 23:molecules23051065. [PMID: 29724076 PMCID: PMC6100308 DOI: 10.3390/molecules23051065] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 04/25/2018] [Accepted: 04/25/2018] [Indexed: 12/13/2022] Open
Abstract
The greening of analytical methods has gained increasing interest in the field of pharmaceutical analysis to reduce environmental impacts and improve the health safety of analysts. Reversed-phase high-performance liquid chromatography (RP-HPLC) is the most widely used analytical technique involved in pharmaceutical drug development and manufacturing, such as the quality control of bulk drugs and pharmaceutical formulations, as well as the analysis of drugs in biological samples. However, RP-HPLC methods commonly use large amounts of organic solvents and generate high quantities of waste to be disposed, leading to some issues in terms of ecological impact and operator safety. In this context, greening HPLC methods is becoming highly desirable. One strategy to reduce the impact of hazardous solvents is to replace classically used organic solvents (i.e., acetonitrile and methanol) with greener ones. So far, ethanol has been the most often used alternative organic solvent. Others strategies have followed, such as the use of totally aqueous mobile phases, micellar liquid chromatography, and ionic liquids. These approaches have been well developed, as they do not require equipment investments and are rather economical. This review describes and critically discusses the recent advances in greening RP-HPLC methods dedicated to pharmaceutical analysis based on the use of alternative solvents.
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Affiliation(s)
- Moussa Yabré
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000 Bordeaux, France.
- Laboratoire de développement du médicament, Université Ouaga 1 Pr Joseph Ki-Zerbo, Ouaga 03 BP 7021, Burkina Faso.
| | - Ludivine Ferey
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000 Bordeaux, France.
| | - Issa Touridomon Somé
- Laboratoire de développement du médicament, Université Ouaga 1 Pr Joseph Ki-Zerbo, Ouaga 03 BP 7021, Burkina Faso.
| | - Karen Gaudin
- ChemBioPharm Team, ARNA Laboratory, INSERM U1212, CNRS UMR 5320, Bordeaux University, F-33000 Bordeaux, France.
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17
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Benizri S, Ferey L, Alies B, Mebarek N, Vacher G, Appavoo A, Staedel C, Gaudin K, Barthélémy P. Nucleoside-Lipid-Based Nanocarriers for Sorafenib Delivery. Nanoscale Res Lett 2018; 13:17. [PMID: 29327307 PMCID: PMC5764907 DOI: 10.1186/s11671-017-2420-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 12/19/2017] [Indexed: 05/28/2023]
Abstract
Although the application of sorafenib, a small inhibitor of tyrosine protein kinases, to cancer treatments remains a worldwide option in chemotherapy, novel strategies are needed to address the low water solubility (< 5 μM), toxicity, and side effects issues of this drug. In this context, the use of nanocarriers is currently investigated in order to overcome these drawbacks. In this contribution, we report a new type of sorafenib-based nanoparticles stabilized by hybrid nucleoside-lipids. The solid lipid nanoparticles (SLNs) showed negative or positive zeta potential values depending on the nucleoside-lipid charge. Transmission electron microscopy of sorafenib-loaded SLNs revealed parallelepiped nanoparticles of about 200 nm. Biological studies achieved on four different cell lines, including liver and breast cancers, revealed enhanced anticancer activities of Sorafenib-based SLNs compared to the free drug. Importantly, contrast phase microscopy images recorded after incubation of cancer cells in the presence of SLNs at high concentration in sorafenib (> 80 μM) revealed a total cancer cell death in all cases. These results highlight the potential of nucleoside-lipid-based SLNs as drug delivery systems.
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Affiliation(s)
- Sebastien Benizri
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France
| | - Ludivine Ferey
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France
| | - Bruno Alies
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France
| | - Naila Mebarek
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France
| | - Gaelle Vacher
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France
| | - Ananda Appavoo
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
| | - Cathy Staedel
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France
| | - Karen Gaudin
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France
| | - Philippe Barthélémy
- University of Bordeaux, ARNA laboratory, F-33000, Bordeaux, France.
- INSERM, U1212, ARNA laboratory, F-33000, Bordeaux, France.
- CNRS, UMR 5320, ARNA laboratory, F-33000, Bordeaux, France.
- ARNA Laboratory, team ChemBioPharm, U1212 INSERM-UMR 5320 CNRS, 146 rue Léo Saignat, 33076, Bordeaux Cedex, France.
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18
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Kauss T, Marchivie M, Phoeung T, Gaubert A, Désiré A, Tonelli G, Boyer C, Langlois MH, Cartwright A, Gomes M, White N, Gaudin K. Preformulation studies of ceftriaxone for pediatric non-parenteral administration as an alternative to existing injectable formulations. Eur J Pharm Sci 2017; 104:382-392. [DOI: 10.1016/j.ejps.2017.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 04/07/2017] [Accepted: 04/17/2017] [Indexed: 11/26/2022]
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19
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Oumzil K, Ramin MA, Lorenzato C, Hémadou A, Laroche J, Jacobin-Valat MJ, Mornet S, Roy CE, Kauss T, Gaudin K, Clofent-Sanchez G, Barthélémy P. Solid Lipid Nanoparticles for Image-Guided Therapy of Atherosclerosis. Bioconjug Chem 2016; 27:569-75. [PMID: 26751997 DOI: 10.1021/acs.bioconjchem.5b00590] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although the application of nanotechnologies to atherosclerosis remains a young field, novel strategies are needed to address this public health issue. In this context, the magnetic resonance imaging (MRI) approach has been gradually investigated in order to enable image-guided treatments. In this contribution, we report a new approach based on nucleoside-lipids allowing the synthesis of solid lipid nanoparticles (SLN) loaded with iron oxide particles and therapeutic agents. The insertion of nucleoside-lipids allows the formation of stable SLNs loaded with prostacycline (PGI2) able to inhibit platelet aggregation. The new SLNs feature better relaxivity properties in comparison to the clinically used contrast agent Feridex, indicating that SLNs are suitable for image-guided therapy.
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Affiliation(s)
- Khalid Oumzil
- University of Bordeaux, ARNA laboratory , F-33000 Bordeaux, France.,INSERM, U869, ARNA laboratory , F-33000 Bordeaux, France
| | - Michael A Ramin
- University of Bordeaux, ARNA laboratory , F-33000 Bordeaux, France.,INSERM, U869, ARNA laboratory , F-33000 Bordeaux, France
| | - Cyril Lorenzato
- CRMSB Centre de Résonance Magnétique des Systèmes Biologiques, UMR 5536, CNRS, University of Bordeaux , F-33076 Bordeaux, France
| | - Audrey Hémadou
- CRMSB Centre de Résonance Magnétique des Systèmes Biologiques, UMR 5536, CNRS, University of Bordeaux , F-33076 Bordeaux, France
| | - Jeanny Laroche
- CRMSB Centre de Résonance Magnétique des Systèmes Biologiques, UMR 5536, CNRS, University of Bordeaux , F-33076 Bordeaux, France
| | - Marie Josée Jacobin-Valat
- CRMSB Centre de Résonance Magnétique des Systèmes Biologiques, UMR 5536, CNRS, University of Bordeaux , F-33076 Bordeaux, France
| | - Stephane Mornet
- Institut de Chimie de la Matière Condensée de Bordeaux, ICMCB UPR CNRS 9048, University of Bordeaux , F-33608 Pessac, France
| | - Claude-Eric Roy
- University of Bordeaux, ARNA laboratory , F-33000 Bordeaux, France.,INSERM, U869, ARNA laboratory , F-33000 Bordeaux, France
| | - Tina Kauss
- University of Bordeaux, ARNA laboratory , F-33000 Bordeaux, France.,INSERM, U869, ARNA laboratory , F-33000 Bordeaux, France
| | - Karen Gaudin
- University of Bordeaux, ARNA laboratory , F-33000 Bordeaux, France.,INSERM, U869, ARNA laboratory , F-33000 Bordeaux, France
| | - Gisèle Clofent-Sanchez
- CRMSB Centre de Résonance Magnétique des Systèmes Biologiques, UMR 5536, CNRS, University of Bordeaux , F-33076 Bordeaux, France
| | - Philippe Barthélémy
- University of Bordeaux, ARNA laboratory , F-33000 Bordeaux, France.,INSERM, U869, ARNA laboratory , F-33000 Bordeaux, France
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Assassi AL, Roy CE, Perovitch P, Auzerie J, Hamon T, Gaudin K. Green analytical method development for statin analysis. J Chromatogr A 2015; 1380:104-11. [DOI: 10.1016/j.chroma.2014.12.066] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/15/2014] [Accepted: 12/21/2014] [Indexed: 10/24/2022]
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Gaubert A, Kauss T, Marchivie M, Ba BB, Lembege M, Fawaz F, Boiron JM, Lafarge X, Lindegardh N, Fabre JL, White NJ, Olliaro PL, Millet P, Grislain L, Gaudin K. Preliminary pharmaceutical development of antimalarial-antibiotic cotherapy as a pre-referral paediatric treatment of fever in malaria endemic areas. Int J Pharm 2014; 468:55-63. [PMID: 24726300 PMCID: PMC4045394 DOI: 10.1016/j.ijpharm.2014.04.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 02/24/2014] [Accepted: 04/08/2014] [Indexed: 11/19/2022]
Abstract
Artemether (AM) plus azithromycin (AZ) rectal co-formulations were studied to provide pre-referral treatment for children with severe febrile illnesses in malaria-endemic areas. The target profile required that such product should be cheap, easy to administer by non-medically qualified persons, rapidly effective against both malaria and bacterial infections. Analytical and pharmacotechnical development, followed by in vitro and in vivo evaluation, were conducted for various AMAZ coformulations. Of the formulations tested, stability was highest for dry solid forms and bioavailability for hard gelatin capsules; AM release from AMAZ rectodispersible tablet was suboptimal due to a modification of its micro-crystalline structure.
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Affiliation(s)
- Alexandra Gaubert
- Université de Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | - Tina Kauss
- Université de Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France.
| | - Mathieu Marchivie
- Université de Bordeaux, FRE 3396 CNRS Pharmacochimie, Bordeaux, France
| | - Boubakar B Ba
- Université de Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | - Martine Lembege
- Université de Bordeaux, Laboratory of Organic and Therapeutic Chemistry, Pharmacochimie, Bordeaux, France
| | - Fawaz Fawaz
- Université de Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | - Jean-Michel Boiron
- EFS (Etablissement Français du Sang) Aquitaine Limousin, Bordeaux, France
| | - Xavier Lafarge
- EFS (Etablissement Français du Sang) Aquitaine Limousin, Bordeaux, France
| | | | - Jean-Louis Fabre
- OTECI (Office Technique d'Etude et de Coopération Internationale), Paris, France
| | - Nicholas J White
- Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; Centre for Tropical Medicine, Nuffield Department of Medicine, University of Oxford, UK
| | - Piero L Olliaro
- Centre for Tropical Medicine, Nuffield Department of Medicine, University of Oxford, UK; UNICEF/UNDP/WB/WHO Special Program for Research & Training in Tropical Diseases (TDR), Geneva, Switzerland
| | - Pascal Millet
- Université de Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
| | | | - Karen Gaudin
- Université de Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France
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Kauss T, Gaudin K, Gaubert A, Ba B, Tagliaferri S, Fawaz F, Fabre JL, Boiron JM, Lafarge X, White NJ, Olliaro PL, Millet P. Screening paediatric rectal forms of azithromycin as an alternative to oral or injectable treatment. Int J Pharm 2012; 436:624-30. [PMID: 22868232 PMCID: PMC3464429 DOI: 10.1016/j.ijpharm.2012.07.030] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 07/12/2012] [Accepted: 07/19/2012] [Indexed: 11/22/2022]
Abstract
The aim of this study was to identify a candidate formulation for further development of a home or near-home administrable paediatric rectal form of a broad-spectrum antibiotic - specially intended for (emergency) use in tropical rural settings, in particular for children who cannot take medications orally and far from health facilities where injectable treatments can be given. Azithromycin, a broad-spectrum macrolide used orally or intravenously for the treatment of respiratory tract, skin and soft tissue infections, was selected because of its pharmacokinetic and therapeutic properties. Azithromycin in vitro solubility and stability in physiologically relevant conditions were studied. Various pharmaceutical forms, i.e. rectal suspension, two different rectal gels, polyethylene glycol (PEG) suppository and hard gelatin capsule (HGC) were assessed for in vitro dissolution and in vivo bioavailability in the rabbit. Azithromycin PEG suppository appears to be a promising candidate.
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Affiliation(s)
- Tina Kauss
- Univ. Bordeaux, EA 4575 Analytical and Pharmaceutical Developments Applied to Neglected Diseases and Counterfeits, Bordeaux, France.
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Boyer C, Gaudin K, Kauss T, Gaubert A, Boudis A, Verschelden J, Franc M, Roussille J, Boucher J, Olliaro P, White NJ, Millet P, Dubost JP. Development of NIRS method for quality control of drug combination artesunate-azithromycin for the treatment of severe malaria. J Pharm Biomed Anal 2012; 67-68:10-5. [PMID: 22579599 PMCID: PMC3830179 DOI: 10.1016/j.jpba.2012.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 03/01/2012] [Accepted: 04/07/2012] [Indexed: 11/18/2022]
Abstract
Near infrared spectroscopy (NIRS) methods were developed for the determination of analytical content of an antimalarial-antibiotic (artesunate and azithromycin) co-formulation in hard gelatin capsule (HGC). The NIRS consists of pre-processing treatment of spectra (raw spectra and first-derivation of two spectral zones), a unique principal component analysis model to ensure the specificity and then two partial least-squares regression models for the determination content of each active pharmaceutical ingredient. The NIRS methods were developed and validated with no reference method, since the manufacturing process of HGC is basically mixed excipients with active pharmaceutical ingredients. The accuracy profiles showed β-expectation tolerance limits within the acceptance limits (±5%). The analytical control approach performed by reversed phase (HPLC) required two different methods involving two different preparation and chromatographic methods. NIRS offers advantages in terms of lower costs of equipment and procedures, time saving, environmentally friendly.
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Affiliation(s)
- Chantal Boyer
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Karen Gaudin
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
- Corresponding author. Tel.: +33 5 5757 4686; fax: +33 5 5757 4684.
| | - Tina Kauss
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Alexandra Gaubert
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Abdelhakim Boudis
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Justine Verschelden
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Mickaël Franc
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Julie Roussille
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Jacques Boucher
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Piero Olliaro
- Tropical Disease Research, World Health Organization, Geneva, Switzerland
- Tropical Medicine, Mahidol University, 420/6 Rayvithi Road, Bangkok 10400, Thailand
- University of Oxford, UK
| | - Nicholas J. White
- Tropical Medicine, Mahidol University, 420/6 Rayvithi Road, Bangkok 10400, Thailand
- University of Oxford, UK
| | - Pascal Millet
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
| | - Jean-Pierre Dubost
- Développements Analytiques et Pharmaceutiques appliqués aux Maladies Négligées et aux Contrefaçons, EA 4575, Université Bordeaux Segalen, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
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Gaudin K, Kauss T, Gaubert A, Viaud V, Dubost JP, Olliaro P, White NJ, Millet P. Simultaneous Determination of Artemether and Azithromycin in Suppositories by Reversed Phase HPLC. ANAL LETT 2011. [DOI: 10.1080/00032719.2011.553014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Buré C, Cacas JL, Wang F, Gaudin K, Domergue F, Mongrand S, Schmitter JM. Fast screening of highly glycosylated plant sphingolipids by tandem mass spectrometry. Rapid Commun Mass Spectrom 2011; 25:3131-45. [PMID: 21953969 DOI: 10.1002/rcm.5206] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The structural characterization of Glycosyl-Inositol-Phospho-Ceramides (GIPCs), which are the main sphingolipids of plant tissues, is a critical step towards the understanding of their physiological function. After optimization of their extraction, numerous plant GIPCs have been characterized by mass spectrometry. Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) full scan analysis of negative ions provides a quick overview of GIPC distribution. Clear differences were observed for the two plant models studied: six GIPC series bearing from two to seven saccharide units were detected in tobacco BY-2 cell extracts, whereas GIPCs extracted from A. thaliana cell cultures and leaves were less diverse, with a dominance of species containing only two saccharide units. The number of GIPC species was around 50 in A. thaliana and 120 in tobacco BY-2 cells. MALDI-MS/MS spectra gave access to detailed structural information relative to the ceramide moiety, the polar head, as well as the number and types of saccharide units. Once released from GIPCs, fatty acid chains and long-chain bases were analyzed by GC/MS to verify that all GIPC series were taken into account by the MALDI-MS/MS approach. ESI-MS/MS provided complementary information for the identification of isobaric species and fatty acid chains. Such a methodology, mostly relying on MALDI-MS/MS, should open new avenues to determine structure-function relationships between glycosphingolipids and membrane organization.
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Affiliation(s)
- Corinne Buré
- Université de Bordeaux, Chimie Biologie des Membranes et Nanoobjets CBMN-UMR 5248, Centre de Génomique Fonctionnelle Université Bordeaux 2, Bordeaux, France.
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Lacaze C, Kauss T, Kiechel JR, Caminiti A, Fawaz F, Terrassin L, Cuart S, Grislain L, Navaratnam V, Ghezzoul B, Gaudin K, White NJ, Olliaro PL, Millet P. The initial pharmaceutical development of an artesunate/amodiaquine oral formulation for the treatment of malaria: a public-private partnership. Malar J 2011; 10:142. [PMID: 21605361 PMCID: PMC3128010 DOI: 10.1186/1475-2875-10-142] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 05/23/2011] [Indexed: 11/10/2022] Open
Abstract
Background Artemisinin-based combination therapy is currently recommended worldwide for the treatment of uncomplicated malaria. Fixed-dose combinations are preferred as they favour compliance. This paper reports on the initial phases of the pharmaceutical development of an artesunate-amodiaquine (ASAQ) bilayer co-formulation tablet, undertaken following pre-formulation studies by a network of scientists and industrials from institutions of both industrialized and low income countries. Methods Pharmaceutical development was performed by a research laboratory at the University Bordeaux Segalen, School of Pharmacy, for feasibility and early stability studies of various drug formulations, further transferred to a company specialized in pharmaceutical development, and then provided to another company for clinical batch manufacturing. The work was conducted by a regional public-private not-for-profit network (TropiVal) within a larger Public Private partnership (the FACT project), set up by WHO/TDR, Médecins Sans Frontières and the Drugs for Neglected Disease initiative (DNDi). Results The main pharmaceutical goal was to combine in a solid oral form two incompatible active principles while preventing artesunate degradation under tropical conditions. Several options were attempted and failed to provide satisfactory stability results: incorporating artesunate in the external phase of the tablets, adding a pH regulator, alcoholic wet granulation, dry granulation, addition of an hydrophobic agent, tablet manufacturing in controlled conditions. However, long-term stability could be achieved, in experimental batches under GMP conditions, by physical separation of artesunate and amodiaquine in a bilayer co-formulation tablet in alu-alu blisters. Conduction of the workplan was monitored by DNDi. Conclusions Collaborations between research and industrial groups greatly accelerated the process of development of the bi-layered ASAQ tablet. Lack of public funding was the main obstacle hampering the development process, and no intellectual property right was claimed. This approach resulted in a rapid technology transfer to the drug company Sanofi-Aventis, finalizing the process of development, registration and WHO pre-qualification of the fixed-dose co-formulation together with DNDi. The bi-layered tablet is made available under the names of Coarsucam® and Artesunate amodiaquine Winthrop®, Sanofi-Aventis. The issue related to the difficulty of public institutions to valorise their participation in such initiative by lack of priority and funding of applied research is discussed.
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Laborde-Kummer E, Gaudin K, Joseph-Charles J, Gheyouche R, Boudis H, Dubost JP. Development and validation of a rapid capillary electrophoresis method for the determination of oseltamivir phosphate in Tamiflu® and generic versions. J Pharm Biomed Anal 2009; 50:544-6. [DOI: 10.1016/j.jpba.2009.05.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 05/14/2009] [Accepted: 05/19/2009] [Indexed: 11/27/2022]
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Kauss T, Gaudin K, Mechraoui A, Bouhenika M, Peyrot L, Dubost JP. N,N′-Ethylenebisstearamide Additive in Intravaginal Drug Delivery Device Determined by NP-LC with ELSD. Chromatographia 2009. [DOI: 10.1365/s10337-009-1275-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Gaudin K, Kauss T, Lagueny AM, Millet P, Fawaz F, Dubost JP. Determination of artesunate using reversed-phase HPLC at increased temperature and ELSD detection. J Sep Sci 2008; 32:231-7. [DOI: 10.1002/jssc.200800437] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gaudin K, Barbaud A, Boyer C, Langlois MH, Lagueny AM, Dubost JP, Millet P, Fawaz F. In vitro release and stability of an artesunate rectal gel suitable for pediatric use. Int J Pharm 2008; 353:1-7. [PMID: 18082982 DOI: 10.1016/j.ijpharm.2007.10.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2007] [Revised: 10/26/2007] [Accepted: 10/31/2007] [Indexed: 10/22/2022]
Abstract
The rectal route is indicated to treat patients with rapidly evolving malaria who cannot take oral medication to prevent progression to severe forms of the disease. Improvement can be made in terms of rectal bioavailability and stability of current formulations. We studied a new two-compartment, muco-adhesive gel formulation of artesunate which is adapted for use in children and storage in tropical climates. The formulation contains 50mg of artesunate per gram of gel. Because of its instability in aqueous solutions, artesunate is in the dry component of the gel with Carbopol and separate from the liquid phase until reconstitution. Artesunate is stable in the dry blend for 6 months at 45 degrees C and 60% RH. The gel should be used between 1 and 72 h after being reconstituted. Artesunate release was measured by with a rapid, simple and reliable HPLC-UV which allowed the analysis of artesunate and dihydroartemisinin with an analysis time at 3 min. The amount of artesunate released over 6h was 56 +/- 0.97%. Compared to the reference suspension, total release and dissolution efficiency were lower and rate of release was slower (time to 50% dissolution 271 +/- 21 min), probably because of the higher viscosity of the gel, but the drug release profiles were similar. The calculated in vitro release exponent (n) value suggested that artesunate is released from the gel by non-Fickian transport.
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Affiliation(s)
- Karen Gaudin
- Laboratoire de Chimie Analytique, UFR Pharmacie, Université Bordeaux 2, Bordeaux Cedex, France.
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Gaudin K, Ho-Sung H, Bleton J, Joseph-Charles J, Dallet P, Puig P, Dubost JP. Determination of N,N'-ethylenebisstearamide additive in polymer by normal phase liquid chromatography with evaporative light scattering detection. J Chromatogr A 2007; 1167:27-34. [PMID: 17765251 DOI: 10.1016/j.chroma.2007.06.051] [Citation(s) in RCA: 8] [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] [Received: 02/16/2007] [Revised: 06/26/2007] [Accepted: 06/28/2007] [Indexed: 10/23/2022]
Abstract
A new method for N,N'-ethylenebisstearamide (EBS) analysis was developed and validated in normal phase-HP liquid chromatography (NP-HPLC) with diol column at 50 degrees C with 100% CHCl(3) at 1 mL min(-1) and evaporative light scattering detection with elution time at 3.0 min. EBS solubility was the best at 0.80 gL(-1) in CHCl(3)/methanol 90:10. The molecular structure of commercial samples of EBS was determined by GC-MS which ascertained that the main structure is C18/C18 at approximately 45%. The remaining part was constituted by molecules with different alkyl chain length. The HPLC quantification method was proved linear (r=0.9983), accurate (99.6%) and precise (1.95%). Limit of quantification (LOQ) and limit of detection (LOD) were equal to 2.0 and 0.8 microg mL(-1), respectively. The suitability of this method was assessed with a dissolution/precipitation extraction procedure of EBS from ethylene vinyl acetate (EVA) polymer which showed that other additives and polymer do not interfere with EBS analysis. The intra-day and day-to-day precisions of extraction method were equal to 9.1% and 9.9%, respectively.
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Affiliation(s)
- Karen Gaudin
- Laboratoire de Chimie Analytique, PPF - Médicament-Parasitologie, UFR Pharmacie, Université Bordeaux 2, 146 rue Léo Saignat, 33076 Bordeaux cedex, France
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Gaudin K, Hanai T, Chaminade P, Baillet A. Retention behaviour of polyunsaturated fatty acid methyl esters on porous graphitic carbon. J Chromatogr A 2007; 1157:56-64. [PMID: 17543313 DOI: 10.1016/j.chroma.2007.05.028] [Citation(s) in RCA: 9] [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] [Received: 03/06/2007] [Revised: 05/09/2007] [Accepted: 05/10/2007] [Indexed: 10/23/2022]
Abstract
Retention with porous graphitic carbon was investigated with 25 structures of fatty acid methyl esters (FAMEs) with two different mobile phases: CH(3)CN:CHCl(3) 60:40 (v/v) and CH(3)OH:CHCl(3) 60:40 (v/v) with both 0.1% triethylamine (TEA) and an equimolar amount of HCOOH. Preliminary results showed that the use of TEA/HCOOH led to the response increase of saturated FAMEs with evaporative light scattering detection. No increase was observed for unsaturated one. These modifiers may slightly reduce the retention of FAMEs but did not significantly modify the separation factor with porous graphitic carbon. Thermodynamic parameters were calculated for each structure using Van't Hoff plot measured over the temperature range from 10 to 50 degrees C, with the both mobile phase conditions. All the studied compounds were found linked by the same retention mechanism on porous graphitic carbon. Quantitative in silico analysis of the retention using a molecular mechanics calculation demonstrated a good correlation between the retention factors and the molecular interaction energy values (r>0.93). Especially the Van der Waals energy was predominant, and the contribution of electrostatic energy was negligible for the quantitative analysis of the retention. The results indicate that Van der Waals force, hydrophobic interaction, is predominant for the retention of FAMEs on this packing material. The relative retention for highly unsaturated homologues can be changed by the selection of the weak solvent CH(3)CN or CH(3)OH. Then isomers differing only in the position of the carbon double bond on the alkyl chain can be separated and their behaviour is summarised as the closer the carbon double bonds to the FAME polar head, the more the retention decreases. Finally, the more important the number of carbon double bonds in the alkyl chain is, the smaller the retention is.
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Affiliation(s)
- Karen Gaudin
- Laboratoire de Chimie Analytique, EA 3677, Bases Thérapeutiques des Inflammations et Infections, Faculté de Pharmacie, Université de Bordeaux 2, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France.
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Gaudin K, Chaminade P, Baillet A, Ferrier D, Bleton J, Goursaud S, Tchapla A. CONTRIBUTION TO LIQUID CHROMATOGRAPHIC ANALYSIS OF CUTANEOUS CERAMIDES. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-100101667] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Gaudin K, Chaminade P, Ferrier D, Baillet A. IMPROVEMENT OF EVAPORATIVE LIGHT SCATTERING DETECTION OF CERAMIDES USING TRIETHYLAMINE AND FORMIC ACID IN NON-AQUEOUS REVERSED PHASE LIQUID CHROMATOGRAPHY. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-100101458] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Gaudin K, Langlois MH, Barbaud A, Boyer C, Millet P, Fawaz F, Dubost JP. Stability of artesunate in pharmaceutical solvents. J Pharm Biomed Anal 2007; 43:1019-24. [PMID: 17084575 DOI: 10.1016/j.jpba.2006.09.039] [Citation(s) in RCA: 13] [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] [Received: 06/08/2006] [Revised: 09/15/2006] [Accepted: 09/24/2006] [Indexed: 11/20/2022]
Abstract
Stability of artesunate (ART) was established in three pharmaceutical solvents. The chromatographic conditions developed for this study were acetonitrile:potassium phosphate buffer 10 mM (40:60, v:v; pH 2.9) at 0.7 mL min(-1) with UV detection at 220 nm using a short X-Terra RP C18 column (50 mm x 3 mm, 3.5 microm). This isocratic condition led to the separation between ART and its main degradation products (i.e. alpha-DHA and beta-DHA) with analysis time of less than 4 min. The retention factors are 1.49, 2.26 and 2.79 min for alpha-DHA, beta-DHA and ART, respectively. This method was proved linear (r(2)=0.9995), accurate (R.S.D.=0.20), precise (R.S.D.=0.74) and robust. The system performance remained unaffected by pH variation from 2.6 to 3.2 and variation of acetonitrile percentage from 38 to 42. Stability of ART was assessed in ethanol, propylene glycol (PG) and polyethylene glycol 400 (PEG 400). Unfortunately none of these solvents prevented ART from degradation longer than 3 months. In ethanol, significant degradation of ART occurred after 3 months at room temperature and this degradation was characterised by numerous degradation products. In PEG 400, significant degradation was observed after only 1 month, however DHA was the unique degradation product, which is also an efficient anti-malarial drug.
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Affiliation(s)
- Karen Gaudin
- Laboratoire de Chimie Analytique UFR Pharmacie, EA 3677, Bases Thérapeutiques des Inflammations et Infections, Université Bordeaux 2, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France.
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Rakotomanga M, Blanc S, Gaudin K, Chaminade P, Loiseau PM. Miltefosine affects lipid metabolism in Leishmania donovani promastigotes. Antimicrob Agents Chemother 2007; 51:1425-30. [PMID: 17242145 PMCID: PMC1855451 DOI: 10.1128/aac.01123-06] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [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: 11/20/2022] Open
Abstract
Miltefosine (hexadecylphosphocholine [HePC]) is the first orally active antileishmanial drug. Transient HePC treatment of Leishmania donovani promastigotes at 10 microM significantly reduced the phosphatidylcholine content and enhanced the phosphatidylethanolamine (PE) content in parasite membranes, suggesting a partial inactivation of PE-N-methyltransferase. Phospholipase D activity did not seem to be affected by HePC. In addition, the enhancement of the lysophosphatidylcholine content could be ascribed to phospholipase A2 activation. Moreover, transient HePC treatment had no effect on the fatty acid alkyl chain length or the fatty acid unsaturation rate. Concerning sterols, we found a strong reduction of the C24 alkylated sterol content, and the enhancement of the cholesterol content could be the result of the HePC condensation effect with sterols. Because some of the effects observed after transient HePC treatment were different from those previously observed in HePC-resistant parasites, it could be hypothesized that continuous in vitro drug pressure induces the mechanisms of regulation in Leishmania lipid metabolism.
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Affiliation(s)
- M Rakotomanga
- Chimiothérapie Antiparasitaire, UMR 8076 CNRS, Faculté de Pharmacie, Université Paris-Sud XI, F-92290 Châtenay-Malabry, France
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Sung HH, Laborde-Kummer E, Gaudin K, Dubost JP. Development and validation of a capillary electrophoresis method for the determination of sulfate in effervescent tablets. Eur J Pharm Biopharm 2006; 64:33-7. [PMID: 16750356 DOI: 10.1016/j.ejpb.2006.03.006] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Accepted: 03/13/2006] [Indexed: 11/24/2022]
Abstract
A suitable capillary electrophoresis (CE) method was developed and validated for sulfate anion determination in effervescent tablets of Digedryl. The large excess of other ions in the matrix (i.e. excipients) constituted the main difficulty of this method's development. So an original analytical procedure for both the conditioning and rinsing of the capillary was purposed including a running electrolyte constituted by boric acid 20 mM and hexamethonium dibromide 0.75 mM at pH 8.00. Separation was carried out on a 60.2 cm (50 cm to the detector) x 0.75 microm i.d. fused-silica capillary at a potential of -29 kV and 35 degrees C. Indirect UV detection was performed at a wavelength of 254 nm using a background electrolyte containing potassium chromate. Nitrate anion was used as an internal standard for quantification. This CE method was validated in terms of selectivity, linearity, accuracy and precision.
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Affiliation(s)
- Helen Ho Sung
- Laboratoire de Chimie Analytique, UFR de Pharmacie, Université Victor Segalen Bordeaux 2, Bordeaux, France
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38
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Roy S, Delobel A, Gaudin K, Touboul D, Germain DP, Baillet A, Prognon P, Laprévote O, Chaminade P. Liquid chromatography on porous graphitic carbon with atmospheric pressure photoionization mass spectrometry and tandem mass spectrometry for the analysis of glycosphingolipids. J Chromatogr A 2006; 1117:154-62. [PMID: 16620865 DOI: 10.1016/j.chroma.2006.03.083] [Citation(s) in RCA: 23] [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: 07/29/2005] [Revised: 03/15/2006] [Accepted: 03/24/2006] [Indexed: 11/28/2022]
Abstract
The study of several structural variations (the length, the degree of unsaturation and hydroxylation of the alkyl chains, the number and nature of osidic residues) helped understand the behaviour of neutral glycosphingolipids (GSLs) on porous graphitic carbon stationary phase (PGC). Atmospheric pressure photoionization mass spectrometry (APPI) and tandem mass spectrometry were used to perform the detection and the identification of molecular species in positive mode where [M+H](+) and [M-H(2)O+H](+) ions provided structural information on the fatty acid and the sphingoid base. The retention of GSLs increased with the hydrocarboneous volume of their alkyl chains and with the number of osidic residues in agreement with hydrophobic properties and polar retention effect of graphite, respectively. The presence of polar groups, such as OH-group or double bond within alkyl chains, decreased their retention. The coupling of chromatography on PGC with APPI tandem mass spectrometry detection appeared a powerful technique to discriminate isobaric molecules. Isobaric solutes differing by the position of two double bonds or by the repartition of hydrocarboneous skeleton were discriminated according to their chromatographic comportment or their mass spectrum, respectively. Among isobaric molecules, only few structures differing by the nature of osidic residue were not discriminated (i.e. glucosylceramide and galactosylceramide with similar ceramide skeleton were co-eluted and no difference in mass spectra was observed).
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Affiliation(s)
- S Roy
- EA 3343 Groupe de Chimie Analytique de Paris Sud, EA 3343, Tour D2, 3(ème) étage, Faculté de Pharmacie Paris XI, 5 rue J.B. Clément, 92290 Châtenay-Malabry, France
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39
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Gaudin K, Baillet A, Chaminade P. Application of a xenon arc lamp as a light source for evaporative light scattering detection. Anal Bioanal Chem 2006; 384:1302-7. [PMID: 16491342 DOI: 10.1007/s00216-006-0297-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2005] [Revised: 12/09/2005] [Accepted: 01/05/2006] [Indexed: 10/25/2022]
Abstract
The standard tungsten-halogen light source used in a commercial evaporative light scattering detector (ELSD) was replaced with a 180 W xenon arc lamp. The xenon arc lamp possesses a broader spectrum in the UV region than the halogen source. The influence of the UV transmittance of five selected solvents was studied with a size-exclusion chromatography column. This solvent parameter was not observed to influence the ELSD response between the two light source settings. With the solvents studied, better sensitivity was obtained with the xenon arc lamp than the halogen lamp. This high-energy source was applied to ceramide III analysis with an octadecyl-grafted silica column and methanol:tetrahydrofuran 97:3 as the mobile phase, and the sensitivity of the quantification of ceramide III increased 16-fold for injected amounts of 14 approximately 140 ng. The molecular species in a sample of naturally occurring ceramides was analyzed using two C18 columns at 40 degrees C and gradient elution from 100% acetonitrile to 100% isopropanol in 30 min. The increased ELSD sensitivity achieved when using the xenon arc lamp allowed both the minor and major ceramide species to be observed, in contrast to the results achieved when the halogen lamp was used, where the increased photomultiplier voltage needed to observed the signals from the minor species caused the signals from the major ceramide species to occur above the detector response window.
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Affiliation(s)
- Karen Gaudin
- Groupe de Chimie Analytique de Paris-Sud, Laboratoire de Chimie Analytique, Faculté de Pharmacie, 92 290, Châtenay-Malabry, France.
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Abstract
The small amount of lipids from human skin obtained with noninvasive sampling method led us to investigate microanalytical separation techniques. The lipid class analysis was performed with a micro polyvinyl alcohol-silica (PVA-Sil) column. The gradient elution was from heptane to acetone/butanol 90:10 v/v in 4%/min at 78 microL/min. In addition an evaporative light scattering detector (ELSD) was modified for micro-LC. All solvents contained 0.1% of triethylamine and formic acid in stoichiometric amount, which increased the ELSD response. In these conditions, the cholesterol eluted before free fatty acid, and squalene and triglycerides close to the dead volume. The various ceramide classes eluted following the order of the increased number of hydroxyl groups. The LOD for ceramides was 2.2 ng. The advantages of this method are the use of a normal stationary phase more reliable due to its chemical stability, its surface homogeneity and its development in microchromatography without chlorinated solvents which offers small LOD and the whole profile of lipids present in stratum corneum (SC). A method using a narrow-bore PVA-Sil column was used to collect ceramide fraction. Then the molecular species were analysed with a porous graphitic carbon column in capillary LC using a gradient from CH3OH/CHCl3 70:30 v/v to CHCl3 at 2%/min with a flow rate at 5 microL/min. The LOD obtained for ceramide was 1 ng. Both methods were assessed with SC samples obtained by rinsing a 5.7 cm2 area of the forearm with 25 mL of ethanol.
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Affiliation(s)
- Loïc Quinton
- Laboratoire de Chimie Analytique, Faculté de pharmacie, Groupe de Chimie Analytique de Paris-Sud, Châtenay-Malabry, France
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Delobel A, Roy S, Touboul D, Gaudin K, Germain DP, Baillet A, Brion F, Prognon P, Chaminade P, Laprévote O. Atmospheric pressure photoionization coupled to porous graphitic carbon liquid chromatography for the analysis of globotriaosylceramides. Application to Fabry disease. J Mass Spectrom 2006; 41:50-8. [PMID: 16287034 DOI: 10.1002/jms.945] [Citation(s) in RCA: 19] [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] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Globotriaosylceramides (Gb(3)) are biological compounds implicated in Fabry disease, a lysosomal storage disease due to the deficient activity of alpha-D-galactosidase A, which results in an accumulation of Gb(3) in many organs. The naturally occurring samples are composed of mixtures of several molecular species differing by the structure of the alkyl chains and the nature of the sphingoid base. Atmospheric pressure photoionization mass spectrometry (APPI-MS) proved to be an efficient method for the analysis of globotriaosylceramide molecular species, both in direct injection and by coupling with liquid chromatography (LC). In the positive ion mode, in-source fragmentations yield very precious information that can be used to determine the structure of the alkyl chains. In the negative ion mode, the chloroform solvent participates to the analyte ionization by forming an adduct with chloride ions generated in situ. Combination of LC on a Porous Graphitic Carbon stationary phase and APPI-MS allowed the detection of a great number of species from biological samples isolated from Fabry patients. This method could be an interesting analytical tool for the biochemical investigation of (sphingo) lipid metabolism.
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Affiliation(s)
- Arnaud Delobel
- Laboratoire de Spectrométrie de Masse, Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, Cedex, France
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Dubost JP, Kummer E, Gaudin K, Carpy A, Baranton J. Determination of a New Set of Lipophilicity Fragmental Contributions Highlights the Problem of Indetermination Due to Two Phenomena: Fragmental Induction and Fragmental Isofrequency. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/qsar.200430004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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West C, Cilpa G, Gaudin K, Chaminade P, Lesellier E. Modelling of ceramide interactions with porous graphite carbon in non-aqueous liquid chromatography. J Chromatogr A 2005; 1087:77-85. [PMID: 16130700 DOI: 10.1016/j.chroma.2005.03.026] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Interactions of solutes on porous graphitic carbon (PGC) with non-aqueous mobile phases are studied by the linear solvation energy relationship (LSER). Studies have been carried out with eight binary mixtures composed of a weak solvent (acetonitrile or methanol) and a strong solvent (tetrahydrofuran, n-butanol, CH2Cl2, 1,1,2-trichloro-2,2,1-trifluoroethane). The systematic analysis of a set of test compounds was performed for each solvent mixture in isocratic mode (50:50). The results were compared to those obtained on PGC with hydro-organic liquids and supercritical fluids. They were then correlated with the observed retention behaviour of lipid compounds, more particularly ceramides.
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Affiliation(s)
- C West
- LETIAM, University de Paris-Sud (XI), IUT d'Orsay, Plateau du Moulon, F-91400 Orsay, France
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Rabinovich-Guilatt L, Dubernet C, Gaudin K, Lambert G, Couvreur P, Chaminade P. Phospholipid hydrolysis in a pharmaceutical emulsion assessed by physicochemical parameters and a new analytical method. Eur J Pharm Biopharm 2005; 61:69-76. [PMID: 15913973 DOI: 10.1016/j.ejpb.2005.03.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2004] [Accepted: 03/11/2005] [Indexed: 11/27/2022]
Abstract
The aim of this work was to develop a simple high-performance liquid chromatography (HPLC) technique with evaporative light scattering detection (ELSD) for the separation and quantification of the major phospholipid (PL) and lysophospholipid (LPL) classes contained in a pharmaceutical phospholipid-based emulsion. In the established method, phosphatidylcholine (PC), phosphatidylethanolamine (PE), sphingomyeline (SM), lysophosphatidylcholine (LPC) and lysophosphatidylethanolamine (LPE) were separated with a PVA-Sil stationary phase and a binary gradient from pure chloroform to methanol:water (94:6 v/v) at 3.4%/min. The ELSD detection was enhanced using 0.1% triethylamine and formic acid in each gradient mobile phases. Factors such as stationary phase and ELSD drift tube temperature were optimized, concluding in optimal temperatures of 25 degrees C for separation and 50 degrees C for evaporation. This HPLC-ELSD method was then applied to a PL-emulsion exposed to autoclaving and accelerated thermal conditions at 50 degrees C. Hydrolysis of PC and PE followed first-order kinetics, representing only 45% of the total lipid mass after 3 months. The chemical stability was correlated to commonly measured formulation physical and physico-chemical parameters such as droplet size, emulsion pH and zeta-potential.
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Boyer C, Brégère B, Crouchet S, Gaudin K, Dubost JP. Direct determination of niflumic acid in a pharmaceutical gel by ATR/FTIR spectroscopy and PLS calibration. J Pharm Biomed Anal 2005; 40:433-7. [PMID: 16122895 DOI: 10.1016/j.jpba.2005.07.018] [Citation(s) in RCA: 19] [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] [Received: 04/05/2005] [Revised: 07/07/2005] [Accepted: 07/07/2005] [Indexed: 11/26/2022]
Abstract
A simple, rapid and convenient analytical method without sample handling procedure is proposed for the determination of niflumic acid in a pharmaceutical gel with attenuated total reflectance/Fourier transform infrared spectroscopy (ATR/FTIR). A partial least square (PLS) calibration model for the prediction of niflumic acid contents was developed using 81 and 27 spectra of standard gels as training and validation sets, respectively. The used spectral range of niflumic acid for the establishment of this model was 2300-1100 cm(-1). All spectra were obtained in the transmittance mode, then normalized and first derivative transformed. The model yielded a regression coefficient R2 equal to 1 for the training set and a root mean square error of prediction (RMSEP) equal to 0.2 for the validation set. The percentage recoveries of the method for the analysis of Niflugel ranged from 96.60 to 101.02%.
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Affiliation(s)
- C Boyer
- Laboratoire de Chimie Analytique, EA 2962, Université Victor Segalen Bordeaux 2, 146 rue Léo Saignat, 33076 Bordeaux Cedex, France
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Roy S, Gaudin K, Germain DP, Baillet A, Prognon P, Chaminade P. Optimisation of the separation of four major neutral glycosphingolipids: application to a rapid and simple detection of urinary globotriaosylceramide in Fabry disease. J Chromatogr B Analyt Technol Biomed Life Sci 2005; 805:331-7. [PMID: 15135109 DOI: 10.1016/j.jchromb.2004.03.037] [Citation(s) in RCA: 20] [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: 12/04/2003] [Revised: 03/15/2004] [Accepted: 03/15/2004] [Indexed: 11/28/2022]
Abstract
A simple method for the separation of the four major neutral glycosphingolipids, present in all human tissue, was developed. This gradient normal phase-HPLC method utilises a polyvinyl alcohol bonded stationary phase and an evaporative light-scattering detection (ELSD). Screening pure solvents in a binary gradient elution mode allowed, in a first step, to assess the behaviour of the studied solutes and to select the solvents for further mobile phase optimisation. The proportion of the remaining solvents was defined to reach a maximal resolution. The reduction of the analysis time and the enhancement of the signal were obtained by optimising the gradient slope and the flow-rate. Optimal levels of triethylamine and formic acid (TEA-FA) for the enhancement of the evaporative light scattering detector response were established at 0.1% (v/v). Thus, the optimal conditions for the separation of the four glycosphingolipids was obtained with a gradient elution from a 100% chloroform to a 100% acetone:methanol (90:10 (v/v)) mobile phase at 0.2 ml min-1, using a 10% min-1 gradient slope. Finally, this method was applied to detect the excess of one of the neutral sphingolipids, namely globotriaosylceramide (Gb3) in the urine of patients affected with Fabry disease. A liquid-liquid extraction of the sediments obtained from an aliquot of only ten ml of urine proved sufficient to detect the excess of Gb3 present in both hemizygote and heterozygote patients. In all, the ability of our method to detect abnormal amounts of Gb3 in urinary sediments could allow the diagnosis of weakly symptomatic Fabry patients in large screening programs
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Affiliation(s)
- S Roy
- Groupe de Chimie Analytique du Sud de Paris, EA 3343, Laboratoire de Chimie Analytique, Faculté de Pharmacie, 92296 Châtenay-Malabry, Cedex, France
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Deschamps FS, Gaudin K, Baillet A, Chaminade P. Wheat digalactosyldiacylglycerol molecular species profiling using porous graphitic carbon stationary phase. J Sep Sci 2004; 27:1313-22. [PMID: 15587281 DOI: 10.1002/jssc.200401874] [Citation(s) in RCA: 13] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The potential of porous graphitic carbon stationary phase (PGC) was assessed for the separation of molecular species of digalactosyldiacylglycerol (DGDG). Detection was by an evaporative light scattering detector (ELSD). A conventional optimization strategy allowed definition of a quaternary non-aqueous mobile phase and separation of 9 wheat DGDG molecular species with isocratic elution: methanol/toluene/tetrahydrofuran/chloroform 64.3/21.5/13.7/0.5 v/v with 0.1% of triethylamine and a stoichiometric amount of formic acid. The molecular species were identified by LC/MS. The chromatographic behavior of DGDG on PGC was then compared to previous studies. The addition of a carbon double bond on the alkyl chain decreased the retention. This contribution was less important when the number of unsaturations increased in the alkyl chain. The consequence of this retention behavior with PGC was an elution order of molecular species which did not agree with the partition number as observed with C18 grafted stationary phases.
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Affiliation(s)
- Frantz S Deschamps
- Groupe de Chimie Analytique de Paris-Sud, EA 3343, Laboratoire de Chimie Analytique, Faculté de pharmacie, 5 rue Jean-Baptiste Clement, 92296 Châtenay-Malabry cedex, France
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Gaudin K, Baillet A, Chaminade P. Adaptation of an evaporative light-scattering detector to micro and capillary liquid chromatography and response assessment. J Chromatogr A 2004; 1051:43-51. [PMID: 15532554 DOI: 10.1016/j.chroma.2004.05.021] [Citation(s) in RCA: 25] [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] [Indexed: 11/26/2022]
Abstract
A commercially available evaporative light-scattering detection (ELSD) system was adapted for micro and capillary LC. Therefore the various parameters involved in the droplet formation during the nebulization step in the ELSD system were studied. It was shown that the velocity term in the Nukiyama Tanasawa equation remains constant, leading to droplets of the same order of magnitude for narrow bore and capillary columns. Consequently, the ELSD modification was performed by decreasing the internal diameter of the effluent capillary tube in the nebulizer nozzle and by keeping its external diameter constant. Next, response curves for a conventional and the developed micro and capillary LC were compared as to investigate why a linear ELSD response is often obtained when used in micro or capillary LC. By splitting the flow rate post column, we showed that the nebulization process was not at the origin of the phenomenon. For ceramide III and tripalmitin, the response curves were found to be non-linear. However the curvature was less significant when the columns internal diameter decreased. Calculated particle size profiles for micro or capillary LC suggest that the particle entering the detection chamber are bigger than under conventional LC conditions. Last, triethylamine and formic acid were used to increase the response of the detector. The response enhancement, expected from previous studies, was established for the two lipids involved in this study.
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Affiliation(s)
- Karen Gaudin
- Groupe de Chimie Analytique de Paris-Sud: EA 3343, Laboratoire de Chimie Analytique, Faculté de Pharmacie, Châtenay-Malabry, France
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49
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Abstract
The eluotropic strength of binary mobile phases was calculated for three homologous series of cis, trans, and cis-cis unsaturated fatty acid methyl esters (FAMEs). Binary mobile phases with chloroform, dichloromethane, or tetrahydrofuran as strong solvent and methanol or acetonitrile as weak solvent were tested. The volume fraction of strong solvent in the binary phases was between 0.3 and 0.8. Curves of eluotropic strength versus volume fraction of strong solvents showed similar trends to previously published results for saturated homologues. Correlation coefficients of the plots of eluotropic strength values for saturated versus unsaturated FAMEs were close to 1.0. Therefore these similarities validate the model of eluotropic strength previously established with saturated FAMEs as relevant for unsaturated FAMEs. The separation factors between cis and trans homologues always showed elution of the cis before the trans homologue. The difference in retention is due primarily to the geometry of the molecule. The retention is lowered more by the addition of a first carbon double bond than by the addition of a second one, independently of the mobile phase composition.
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Affiliation(s)
- Karen Gaudin
- Groupe de Chimie Analytique de Paris-Sud: EA 3343, Laboratoire de Chimie Analytique, Faculte de Pharmacie, 5 rue Jean-Baptiste Clement, 92290 Châtenay-Malabry, France.
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Lesellier E, Gaudin K, Chaminade P, Tchapla A, Baillet A. Isolation of ceramide fractions from skin sample by subcritical chromatography with packed silica and evaporative light scattering detection. J Chromatogr A 2003; 1016:111-21. [PMID: 14601832 DOI: 10.1016/s0021-9673(03)01323-2] [Citation(s) in RCA: 24] [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] [Indexed: 11/17/2022]
Abstract
Separative method of lipid classes from the stratum corneum was developed with packed silica and supercritical CO2 containing 10% of methanol at 15 degrees C, 15 MPa and 3 ml min(-1). The elution order of lipid classes was first esterified cholesterol, triglycerides, squalene co-eluted in a single peak, then free fatty acids, free cholesterol, ceramides and finally glycosylceramides. The ceramides were eluted in several fractions which depended on the number of hydroxyl groups in the molecule, i.e. more hydroxyl groups were contained in ceramides, more important was the retention. Moreover, the retention was not altered by the presence of carbon double bond and variation of the alkyl chain length. The ceramide response with the evaporative light scattering detector was improved by turning the influence of the solvent nature on the response to advantage. Therefore, addition of various solvents with or without triethylamine and formic acid were tested in post-column due to the incompatibility of such modifiers with silica stationary phase. Thereby the solvent conditions for the separation and the detection can be adjusted almost independently. The response was greatly increased by post-column addition of 1% (v/v) triethylamine and its equivalent amount of formic acid in dichloromethane introduced at 0.1 ml min(-1) into the mobile phase. This device had allowed the detection of 400 ng of ceramide with a S/N = 21, whereas no peak was observed in absence of the post-column addition. Finally, the method was applied to the treatment of skin sample which led to highly enriched ceramide fraction.
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