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L’Her E, Geeraerts T, Desclefs JP, Benhamou D, Blanie A, Cerf C, Delmas V, Jourdain M, Lecomte F, Ouanes I, Garnier M, Mossadegh C. Recommandations de pratiques professionnelles : Intérêts de l’apprentissage par simulation en soins critiques. Ann Fr Med Urgence 2022. [DOI: 10.3166/afmu-2022-0411] [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: 11/20/2022]
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2
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Guillemot P, Lecomte F, Camsonne-Pioline N, Cohen-Bittan J, Martinez-Caballero M, Boddaert J, Meziere A. Impact de la dénutrition mesurée par l’IMC sur la récupération de la marche après fracture de l’extrémité supérieure du fémur en SSR orthogériatrique. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.086] [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: 10/18/2022]
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3
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Lecomte F, Martinez-Caballero M, Camsonne-Pioline N, Cohen-Bittan J, Boddaert J, Meziere A. Impact de la carence en vitamine D sur la récupération fonctionnelle après fracture du col du fémur chez les patients âgés hospitalisés en soins de suite et réadaptation orthogériatrique. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.087] [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: 11/17/2022]
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Nieuwjaer N, Beydoun A, Lecomte F, Manil B, Cappelluti F, Guidoni L, Scuderi D, Desfrançois C. IRMPD spectroscopy and quantum chemistry calculations on mono- and bi-metallic complexes of acetylacetonate ligands with aluminum, iron, and ruthenium ions. J Chem Phys 2020; 153:234303. [PMID: 33353333 DOI: 10.1063/5.0031653] [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: 02/02/2023] Open
Abstract
Metal-ligand cluster ions are structurally characterized by means of gas-phase infrared multiple photon dissociation spectroscopy. The mass-selected complexes consist of one or two metal cations M3+ (M = Al, Fe, or Ru) and two to five anionic bidentate acetylacetonate ligands. Experimental IR spectra are compared with different density functional theory calculations, namely, PBE/TZVP, B3LYP/6-31G*, and M06/6-31+G**. Frequency analysis was also performed at different levels, namely, scaled static harmonic and unscaled static anharmonic, or with ab initio molecular dynamics simulations at the PBE/TZVP level. All methods lead to simulated spectra that fit rather well with experimental data, and the spectral red shifts of several main bands, in the 1200 cm-1-1800 cm-1 range, are sensitive to the strength of the metal-ligand interaction and to the spin state of the ion. Due to the rigidity of those complexes, first principles molecular dynamics calculations provide spectra similar to that produced by static calculations that are already able to catch the main spectral signatures using harmonic calculations at the B3LYP/6-31G* level.
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Affiliation(s)
- N Nieuwjaer
- Université Sorbonne Paris Nord, Lab. de Physique des Lasers, CNRS, 93430 Villetaneuse, France
| | - A Beydoun
- Université Sorbonne Paris Nord, Lab. de Physique des Lasers, CNRS, 93430 Villetaneuse, France
| | - F Lecomte
- Université Sorbonne Paris Nord, Lab. de Physique des Lasers, CNRS, 93430 Villetaneuse, France
| | - B Manil
- Université Sorbonne Paris Nord, Lab. de Physique des Lasers, CNRS, 93430 Villetaneuse, France
| | - F Cappelluti
- University of L'Aquila, Department of Information Engineering, Computer Science and Mathematics, 67100 L'Aquila, Italy
| | - L Guidoni
- University of L'Aquila, Department of Physical and Chemical Sciences, 67100 L'Aquila, Italy
| | - D Scuderi
- Université Paris Saclay, Institut de Chimie Physique, UMR 8000 CNRS, 91400 Orsay, France
| | - C Desfrançois
- Université Sorbonne Paris Nord, Lab. de Physique des Lasers, CNRS, 93430 Villetaneuse, France
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Le Calvé C, Abi Rached H, Vicentini C, Maire C, Lecomte F, Thecua E, Ziane L, Mordon S, Staumont-Sallé D, Mortier L. Traitement d’une maladie de Paget vulvaire (MPV) par photothérapie dynamique (PDT) à l’aide d’un nouveau dispositif textile lumineux. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.256] [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: 11/28/2022]
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Lecomte F, Aerts J, Plenevaux A, Defraiteur C, Chapuis-Hugon F, Rozet E, Chiap P, Luxen A, Pichon V, Hubert P, Hubert C. Performance evaluation of a MIP for the MISPE-LC determination of p-[ 18F]MPPF and a potential metabolite in human plasma. J Pharm Biomed Anal 2020; 180:113015. [PMID: 31865206 DOI: 10.1016/j.jpba.2019.113015] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 10/11/2019] [Accepted: 11/26/2019] [Indexed: 10/25/2022]
Abstract
Within the family of serotonin (5-HT) receptors, the 5-HT1A subtype is particularly interesting as it may be involved in various physiological processes or psychological disorders. The p-[18F]MPPF, a highly selective 5-HT1A antagonist, is used for in vivo studies in human or animal by means of positron emission tomography (PET) [1]. In order to selectively extract p-[18F]MPPF and its main metabolites from plasma, molecularly imprinted polymer (MIP) was prepared against these compounds by using the p-MPPF as template. For the control of the selectivity, non-imprinted polymer (NIP) was also synthesized without template. The MIP sorbent, packed in disposable extraction cartridges (DECs), was then evaluated as molecularly imprinted solid-phase extraction (MISPE) prior to the LC determination. The conditions of extraction were evaluated in order to obtain the highest selective retention of the p-[18F]MPPF and its metabolites on this MIP. The MIP selectivity was exploited in the loading and washing steps by adjusting the pH of plasma samples at a suitable value and by selecting mixtures for the washing step to limit the contribution of non-specific interactions. Other important parameters involved in the conditioning and elution steps were also studied. Finally, a pre-validation was carried out with optimal extraction conditions to demonstrate the performance of this MISPE-LC method as a generic method in the context of evaluation of new MISPE for p-[18F]MPPF and its potential for metabolites extraction from human plasma.
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Affiliation(s)
- F Lecomte
- University of Liège (ULiege), CIRM, Laboratory of Pharmaceutical Analytical Chemistry, Liège, Belgium
| | - J Aerts
- University of Liège (ULiege), GIGA-CRC In VIVO Imaging, Liège, Belgium
| | - A Plenevaux
- University of Liège (ULiege), GIGA-CRC In VIVO Imaging, Liège, Belgium
| | - C Defraiteur
- University of Liège (ULiege), GIGA-CRC In VIVO Imaging, Liège, Belgium
| | - F Chapuis-Hugon
- Dept of Analytical, Bioanalytical Sciences and Miniaturization (LSABM), UMR CBI 8231 (CNRS-ESPCI Paris), ESPCI Paris, PSL University, Paris, France
| | - E Rozet
- Pharmalex, Mont-St-Guibert, Belgium
| | - P Chiap
- Academic Hospital of Liège, Department of Toxicology, GLP-AEPT Unit, CIRM, Liège, Belgium
| | - A Luxen
- University of Liège (ULiege), GIGA-CRC In VIVO Imaging, Liège, Belgium
| | - V Pichon
- Dept of Analytical, Bioanalytical Sciences and Miniaturization (LSABM), UMR CBI 8231 (CNRS-ESPCI Paris), ESPCI Paris, PSL University, Paris, France; Sorbonne Université, Paris, France
| | - Ph Hubert
- University of Liège (ULiege), CIRM, Laboratory of Pharmaceutical Analytical Chemistry, Liège, Belgium
| | - C Hubert
- University of Liège (ULiege), CIRM, Laboratory of Pharmaceutical Analytical Chemistry, Liège, Belgium.
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Mordon S, Vignion-Dewalle A, Abi-Rached H, Thecua E, Lecomte F, Vicentini C, Deleporte P, Béhal H, Kerob D, Hommel T, Duhamel A, Szeimies R, Mortier L. Testing a new light therapy for the treatment of actinic keratosis. Br J Dermatol 2020. [DOI: 10.1111/bjd.18651] [Citation(s) in RCA: 2] [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: 11/28/2022]
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Mordon S, Vignion-Dewalle A, Abi-Rached H, Thecua E, Lecomte F, Vicentini C, Deleporte P, Béhal H, Kerob D, Hommel T, Duhamel A, Szeimies R, Mortier L. 测试一种用于治疗光化性角化症的新的光疗法. Br J Dermatol 2020. [DOI: 10.1111/bjd.18668] [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: 11/30/2022]
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Abi Rached H, Mordon S, Vicentini C, Maire C, Thecua E, Lecomte F, Vignon AS, Deleporte P, Szeimies PM, Mortier L. Étude de phase II évaluant la non-infériorité et la tolérance du dispositif textile lumineux PHOS-ISTOS® comparé à la photothérapie dynamique conventionnelle : un essai randomisé, contrôlé, bi-centrique. Ann Dermatol Venereol 2019. [DOI: 10.1016/j.annder.2019.09.090] [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: 11/15/2022]
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Mordon S, Vignion-Dewalle AS, Abi-Rached H, Thecua E, Lecomte F, Vicentini C, Deleporte P, Béhal H, Kerob D, Hommel T, Duhamel A, Szeimies RM, Mortier L. The conventional protocol vs. a protocol including illumination with a fabric-based biophotonic device (the Phosistos protocol) in photodynamic therapy for actinic keratosis: a randomized, controlled, noninferiority clinical study. Br J Dermatol 2019; 182:76-84. [PMID: 31021404 DOI: 10.1111/bjd.18048] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Topical photodynamic therapy (PDT) using methyl aminolaevulinate is a noninvasive treatment option suitable to treat clinical and subclinical actinic keratosis (AK) over a large area (field cancerization). The most widely used, conventional protocol in Europe includes illumination with a red-light lamp. This illumination commonly causes pain, and patients often cannot complete the treatment. OBJECTIVES The aims of this paper are twofold. The first aim is to introduce a novel protocol, the Phosistos protocol (P-PDT), which includes illumination with a fabric-based biophotonic device. The second and major aim is to assess the noninferiority, in terms of efficacy for PDT of AK, of P-PDT compared with the conventional protocol (C-PDT). METHODS A randomized, controlled, multicentre, intraindividual clinical study was conducted. Forty-six patients with grade I-II AK of the forehead and scalp were treated with P-PDT on one area (280 AK lesions) and with C-PDT on the contralateral area (280 AK lesions). The primary end point was the lesion complete response (CR) rate at 3 months, with an absolute noninferiority margin of -10%. Secondary end points included pain scores, incidence of adverse effects and cosmetic outcome. RESULTS Three months following treatment, the lesion CR rate of P-PDT was noninferior to that of C-PDT (79·3% vs. 80·7%, respectively; absolute difference -1·6%; one-sided 95% confidence interval -4·5% to infinity). The noninferiority of P-PDT to C-PDT in terms of the lesion CR rate remained at the 6-month follow-up (94·2% vs. 94·9%, respectively; absolute difference -0·6%; one-sided 95% confidence interval -2·7% to infinity). Moreover, the pain score at the end of illumination was significantly lower for P-PDT than for C-PDT (mean ± SD 0·3 ± 0·6 vs. 7·4 ± 2·3; P < 0·001). CONCLUSIONS P-PDT is noninferior to C-PDT in terms of efficacy for treating AK of the forehead and scalp and resulted in much lower pain scores and fewer adverse effects. What's already known about this topic? Topical photodynamic therapy using methyl aminolaevulinate is effective for treating actinic keratosis. In Europe, the conventional protocol involves illumination with a red-light lamp. Unfortunately, pain is often experienced by patients undergoing this protocol. An alternative protocol that uses daylight illumination has recently been shown to be as effective as the conventional protocol while being nearly painless. However, this alternative protocol can be conducted only in suitable weather conditions. What does this study add? The Phosistos protocol is demonstrated to be as effective as the conventional protocol, nearly as painless as the daylight protocols and suitable year round for treatment of actinic keratosis.
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Affiliation(s)
- S Mordon
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France
| | - A S Vignion-Dewalle
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France
| | - H Abi-Rached
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France.,Department of Dermatology, CHU Lille, F-59000, Lille, France
| | - E Thecua
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France
| | - F Lecomte
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France
| | - C Vicentini
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France.,Department of Dermatology, CHU Lille, F-59000, Lille, France
| | - P Deleporte
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France
| | - H Béhal
- University of Lille, CHU Lille, EA 2694 - Santé Publique: Epidémiologie et Qualité des Soins, Unité de Biostatistiques, F-59000, Lille, France
| | - D Kerob
- Galderma International SAS, F-92927, La Défense, France
| | - T Hommel
- Department of Dermatology and Allergology, Klinikum Vest GmbH, D-45657, Recklinghausen, Germany
| | - A Duhamel
- University of Lille, CHU Lille, EA 2694 - Santé Publique: Epidémiologie et Qualité des Soins, Unité de Biostatistiques, F-59000, Lille, France
| | - R M Szeimies
- Department of Dermatology and Allergology, Klinikum Vest GmbH, D-45657, Recklinghausen, Germany
| | - L Mortier
- University of Lille, INSERM, CHU Lille, U1189 - ONCO-THAI - Image Assisted Laser Therapy for Oncology, F-59000, Lille, France.,Department of Dermatology, CHU Lille, F-59000, Lille, France
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Vicentini C, Vignion‐Dewalle A, Thecua E, Lecomte F, Maire C, Deleporte P, Béhal H, Kerob D, Duhamel A, Mordon S, Mortier L. A new protocol using a light‐emitting fabric for PDT of AK. Br J Dermatol 2019. [DOI: 10.1111/bjd.17655] [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: 11/29/2022]
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12
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Vicentini C, Vignion‐Dewalle A, Thecua E, Lecomte F, Maire C, Deleporte P, Béhal H, Kerob D, Duhamel A, Mordon S, Mortier L. 一种利用发光纤维进行 AK PDT 的新方案. Br J Dermatol 2019. [DOI: 10.1111/bjd.17671] [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: 12/01/2022]
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Vicentini C, Vignion‐Dewalle A, Thecua E, Lecomte F, Maire C, Deleporte P, Béhal H, Kerob D, Duhamel A, Mordon S, Mortier L. Photodynamic therapy for actinic keratosis of the forehead and scalp: a randomized, controlled, phaseIIclinical study evaluating the noninferiority of a new protocol involving irradiation with a light‐emitting, fabric‐based device (the Flexitheralight protocol) compared with the conventional protocol involving irradiation with the AktiliteCL128 lamp. Br J Dermatol 2019; 180:765-773. [DOI: 10.1111/bjd.17350] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2018] [Indexed: 11/30/2022]
Affiliation(s)
- C. Vicentini
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
- Department of Dermatology CHU Lille F‐59000 LilleFrance
| | - A.S. Vignion‐Dewalle
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
| | - E. Thecua
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
| | - F. Lecomte
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
| | - C. Maire
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
- Department of Dermatology CHU Lille F‐59000 LilleFrance
| | - P. Deleporte
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
| | - H. Béhal
- Univ. Lille CHU Lille EA 2694 – Santé Publique: épidémiologie et qualité des soins, Unité de Biostatistiques F‐59000 LilleFrance
| | - D. Kerob
- Galderma International SAS F‐92927 La Défense France
| | - A. Duhamel
- Univ. Lille CHU Lille EA 2694 – Santé Publique: épidémiologie et qualité des soins, Unité de Biostatistiques F‐59000 LilleFrance
| | - S. Mordon
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
| | - L. Mortier
- Univ. Lille INSERM, CHU Lille, U1189 – ONCO‐THAI – Image Assisted Laser Therapy for Oncology F‐59000 LilleFrance
- Department of Dermatology CHU Lille F‐59000 LilleFrance
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Le Calvé C, Mortier L, Vicentini C, Delaporte E, Maire C, Thecua E, Lecomte F, Rached HA, Mordon S, Deleporte P, Vignon AS. Traitement de la folliculite décalvante par PDT avec dispositifs lumineux textiles : à propos de 2 observations. Ann Dermatol Venereol 2018. [DOI: 10.1016/j.annder.2018.09.264] [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: 11/28/2022]
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Noël Racine A, Van Hoye A, Baron A, Lecomte F, Honta M, Vuillemin A. Development of a local HEPA policy analysis tool (CAPLA-Santé) in France. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky218.031] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - A Van Hoye
- Université de Lorraine, APEMAC, Vandoeuvre-les-Nancy, France
| | - A Baron
- Société Française de Santé Publique, Laxou, France
| | - F Lecomte
- Société Française de Santé Publique, Laxou, France
| | - M Honta
- Université de Bordeaux, Centre Emile Durkheim, Pessac, France
| | - A Vuillemin
- Université Côte d'Azur, LAMHESS, Nice, France
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Nieuwjaer N, Desfrançois C, Lecomte F, Manil B, Soorkia S, Broquier M, Grégoire G. Photodissociation Spectroscopy of Cold Protonated Synephrine: Surprising Differences between IR–UV Hole-Burning and IR Photodissociation Spectroscopy of the O–H and N–H Modes. J Phys Chem A 2018; 122:3798-3804. [DOI: 10.1021/acs.jpca.8b01422] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- N. Nieuwjaer
- Laboratoire de Physique des Lasers, CNRS, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France
| | - C. Desfrançois
- Laboratoire de Physique des Lasers, CNRS, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France
| | - F. Lecomte
- Laboratoire de Physique des Lasers, CNRS, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France
| | - B. Manil
- Laboratoire de Physique des Lasers, CNRS, Université Paris 13, Sorbonne Paris Cité, 93430 Villetaneuse, France
| | - S. Soorkia
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS, Univ. Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
- Centre Laser de l’Université Paris-Sud (CLUPS/LUMAT), Univ. Paris-Sud, CNRS, IOGS, Université Paris-Saclay, F-91405 Orsay, France
| | - M. Broquier
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS, Univ. Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
- Centre Laser de l’Université Paris-Sud (CLUPS/LUMAT), Univ. Paris-Sud, CNRS, IOGS, Université Paris-Saclay, F-91405 Orsay, France
| | - G. Grégoire
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS, Univ. Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
- Centre Laser de l’Université Paris-Sud (CLUPS/LUMAT), Univ. Paris-Sud, CNRS, IOGS, Université Paris-Saclay, F-91405 Orsay, France
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Lelaidier R, Balança B, Boet S, Faure A, Lilot M, Lecomte F, Lehot JJ, Rimmelé T, Cejka JC. Use of a hand-held digital cognitive aid in simulated crises: the MAX randomized controlled trial. Br J Anaesth 2017; 119:1015-1021. [DOI: 10.1093/bja/aex256] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2017] [Indexed: 11/12/2022] Open
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Garcia RL, Nieuwjaer N, Desfrançois C, Lecomte F, Leite SD, Manil B, Broquier M, Grégoire G. Vibronic spectra of protonated hydroxypyridines: contributions of prefulvenic and planar structures. Phys Chem Chem Phys 2017; 19:8258-8268. [DOI: 10.1039/c6cp08623c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The UV photofragmentation spectra of cold protonated hydroxypyridines display well resolved vibrational structures, interpreted with calculations at the CC2 level.
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Affiliation(s)
- R. Lozada Garcia
- Laboratoire de Physique des Lasers
- CNRS
- Université Paris 13
- Sorbonne Paris Cité
- France
| | - N. Nieuwjaer
- Laboratoire de Physique des Lasers
- CNRS
- Université Paris 13
- Sorbonne Paris Cité
- France
| | - C. Desfrançois
- Laboratoire de Physique des Lasers
- CNRS
- Université Paris 13
- Sorbonne Paris Cité
- France
| | - F. Lecomte
- Laboratoire de Physique des Lasers
- CNRS
- Université Paris 13
- Sorbonne Paris Cité
- France
| | - S. D. Leite
- Laboratoire de Physique des Lasers
- CNRS
- Université Paris 13
- Sorbonne Paris Cité
- France
| | - B. Manil
- Laboratoire de Physique des Lasers
- CNRS
- Université Paris 13
- Sorbonne Paris Cité
- France
| | - M. Broquier
- Institut des Sciences Moléculaires d'Orsay (ISMO)
- CNRS
- Univ. Paris Sud
- Université Paris-Saclay
- F-91405 Orsay
| | - G. Grégoire
- Institut des Sciences Moléculaires d'Orsay (ISMO)
- CNRS
- Univ. Paris Sud
- Université Paris-Saclay
- F-91405 Orsay
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Kone V, Lecomte F, Randriamanana D, Pourriat JL, Claessens YE, Vidal-Trecan G. Impact of a pilot team on patients' pain reduction and satisfaction in an emergency department: A before-and-after observational study. Rev Epidemiol Sante Publique 2016; 64:59-66. [PMID: 26968458 DOI: 10.1016/j.respe.2015.11.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 11/13/2014] [Revised: 09/24/2015] [Accepted: 11/25/2015] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Pain management and patient satisfaction were targeted in the emergency department of a Paris university hospital. In 1999, 77.0% of patients complained of pain on arrival and more than half of patients did not experience pain relief at discharge. The purpose of the study was to evaluate the outcomes of the implementation of a team piloting pain management on pain reduction and pain care satisfaction. METHOD Two cross-sectional surveys (04/10/1999 to 19/10/1999 and 03/04/2007 to 18/04/2007) were conducted before and after a team piloting pain management was deployed in the emergency department. Consecutive patients age 18 years and older who visited the department suffering from pain were given structured questionnaires that validated scales scoring pain upon arrival and at discharge. Patients' files were analyzed using structured forms. The parameters associated with pain reduction and patient satisfaction were sought. RESULTS In 2007, 65.0% of patients had their pain relieved vs. 35.1% in 1999 (P<0.001); 60.2% were satisfied with the pain care received vs. 39.8%. Pain management (e.g. waiting time ≤ 20 min: 47.6% vs. 20.8%; interventions on pain before the physician's examination: 63.0% vs. 13.8%; and pain reassessment after intervention: 13.8% vs. 4.5%) improved. Both pain reduction and patient satisfaction were significantly associated with intervention before the physician's examination. Pain reduction was independently and positively associated with time of survey, triage level (depending on the severity of their condition), pain intensity on arrival, and negatively associated with discharge without hospitalization. Satisfaction was independently and positively associated with waiting time before examination (0-20 min) and the absence of procedural pain. CONCLUSION The implementation of a team piloting pain management seemed to have had positive effects on pain management in the emergency department. However, respectively, 56.2% and 39.8% of patients remained without pain relief and dissatisfied with pain management at the end of their visit.
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Affiliation(s)
- V Kone
- Public health unit: risk management and quality of care, Paris Centre University Hospital Group, AP-HP, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France
| | - F Lecomte
- Emergency department, Paris Centre University Hospital, AP-HP, 75014 Paris, France
| | - D Randriamanana
- Public health unit: risk management and quality of care, Paris Centre University Hospital Group, AP-HP, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France
| | - J-L Pourriat
- Emergency department, Paris Centre University Hospital, AP-HP, 75014 Paris, France; Department of public health, faculty of medicine, Paris Descartes University, Sorbonne Paris Cité, 75006 Paris, France
| | - Y-E Claessens
- Emergency department, Paris Centre University Hospital, AP-HP, 75014 Paris, France; Department of public health, faculty of medicine, Paris Descartes University, Sorbonne Paris Cité, 75006 Paris, France
| | - G Vidal-Trecan
- Public health unit: risk management and quality of care, Paris Centre University Hospital Group, AP-HP, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France; Department of public health, faculty of medicine, Paris Descartes University, Sorbonne Paris Cité, 75006 Paris, France; Research unit (Inserm U1153) methods team, methods of therapeutic evaluation of chronic diseases, research center epidemiology and biostatistics, Sorbonne Paris Cité, 75004 Paris, France.
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Longchal G, Lecomte F. Une étiologie rare de la syncope : la rupture atraumatique de rate. Ann Fr Med Urgence 2015. [DOI: 10.1007/s13341-015-0572-1] [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: 10/23/2022]
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Rozet E, Dewé W, Chiap P, Lecomte F, Hubert P. LE TRANSFERT D’UNE MÉTHODE DE DOSAGE AUTOMATISÉE DE LA NORADRÉNALINE DANS L’URINE HUMAINE: UTILISATION DE L’ERREUR TOTALE COMME CRITÈRE DE DÉCISION. Acta Clin Belg 2014. [DOI: 10.1179/acb.2006.072] [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: 10/31/2022]
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Houbart V, Cobraiville G, Lecomte F, Debrus B, Hubert P, Fillet M. Development of a nano-liquid chromatography on chip tandem mass spectrometry method for high-sensitivity hepcidin quantitation. J Chromatogr A 2011; 1218:9046-54. [PMID: 22055522 DOI: 10.1016/j.chroma.2011.10.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Revised: 10/03/2011] [Accepted: 10/04/2011] [Indexed: 10/16/2022]
Abstract
Microfluidic LC systems present undeniable advantages over classical LC in terms of sensitivity. Hepcidin, a peptide marker of clinical disorders linked to iron metabolism, was used as model to demonstrate peptide quantification potentialities of LC-chip coupled to a nanoelectrospray source ion trap mass spectrometer in an aqueous sample. First, stable isotope labelled hepcidin was chosen as internal standard and gradient as well as sample compositions were optimised using design of experiments as development tool. The method was then prevalidated using accuracy profiles in order to select the most appropriate response function and to confirm the ability of the technique to quantify low hepcidin concentration. A reliable and very sensitive quantitation method was finally obtained using this integrated microfluidic technology. Indeed, good results with respect to accuracy, trueness and precision were achieved, as well as a very low limit of quantitation (0.07 ng/ml). Method suitability of nano-LC on chip tandem mass spectrometry for hepcidin quantitation was also demonstrated in complex media such as human plasma.
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Affiliation(s)
- V Houbart
- Laboratory of Analytical Pharmaceutical Chemistry, Department of Pharmacy, CIRM, University of Liège, Belgium
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Debrus B, Lebrun P, Kindenge JM, Lecomte F, Ceccato A, Caliaro G, Mbay JMT, Boulanger B, Marini R, Rozet E, Hubert P. Innovative high-performance liquid chromatography method development for the screening of 19 antimalarial drugs based on a generic approach, using design of experiments, independent component analysis and design space. J Chromatogr A 2011; 1218:5205-15. [DOI: 10.1016/j.chroma.2011.05.102] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 05/30/2011] [Accepted: 05/30/2011] [Indexed: 11/15/2022]
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Nistor I, Cao M, Debrus B, Lebrun P, Lecomte F, Rozet E, Angenot L, Frederich M, Oprean R, Hubert P. Application of a new optimization strategy for the separation of tertiary alkaloids extracted from Strychnos usambarensis leaves. J Pharm Biomed Anal 2011; 56:30-7. [DOI: 10.1016/j.jpba.2011.04.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 04/28/2011] [Indexed: 10/18/2022]
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Gillet A, Compère P, Lecomte F, Hubert P, Ducat E, Evrard B, Piel G. Liposome surface charge influence on skin penetration behaviour. Int J Pharm 2011; 411:223-31. [PMID: 21458550 DOI: 10.1016/j.ijpharm.2011.03.049] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 03/21/2011] [Accepted: 03/22/2011] [Indexed: 11/30/2022]
Abstract
Vesicular systems have shown their ability to increase dermal and transdermal drug delivery. Their mechanism of drug transport into and through the skin has been investigated but remains a much debated question. Several researchers have outlined that drug penetration can be influenced by modifying the surface charge of liposomes. In the present work we study the influence of particle surface charge on skin penetration. The final purpose is the development of a carrier system which is able to enhance the skin delivery of two model drugs, betamethasone and betamethasone dipropionate. Liposomes were characterised by their size, morphology, zeta potential, encapsulation efficiency and stability. Ex vivo diffusion studies using Franz diffusion cells were performed. Confocal microscopy was performed to visualise the penetration of fluorescently labelled liposomes into the skin. This study showed the potential of negatively charged liposomes to enhance the skin penetration of betamethasone and betamethasone dipropionate.
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Affiliation(s)
- A Gillet
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, CIRM, University of Liège, CHU, Tour 4, Bat B36, 1 Avenue de l'Hôpital, 4000 Liège, Belgium.
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Hubert C, Houari S, Lecomte F, Houbart V, De Bleye C, Fillet M, Piel G, Rozet E, Hubert P. Development and validation of a sensitive solid phase extraction/hydrophilic interaction liquid chromatography/mass spectrometry method for the accurate determination of glucosamine in dog plasma. J Chromatogr A 2010; 1217:3275-81. [DOI: 10.1016/j.chroma.2010.01.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Revised: 12/02/2009] [Accepted: 01/11/2010] [Indexed: 11/24/2022]
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Lecomte F, Kone V, Ginsburg C, Pourriat JL, Claessens YE, Vidal-Trecan G. 044 Impact of the role of a physician in charge of pane management in the emergency room of a university hospital. BMJ Qual Saf 2010. [DOI: 10.1136/qshc.2010.041632.5] [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: 11/04/2022]
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Poully JC, Schermann JP, Nieuwjaer N, Lecomte F, Grégoire G, Desfrançois C, Garcia GA, Nahon L, Nandi D, Poisson L, Hochlaf M. Photoionization of 2-pyridone and 2-hydroxypyridine. Phys Chem Chem Phys 2010; 12:3566-72. [DOI: 10.1039/b923630a] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Li X, Wang H, Bowen KH, Grégoire G, Lecomte F, Schermann JP, Desfrançois C. The parent anion of the RGD tripeptide: Photoelectron spectroscopy and quantum chemistry calculations. J Chem Phys 2009; 130:214301. [DOI: 10.1063/1.3137095] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Koné V, Gault N, Lafoix C, Lecomte F, Ginsburg C, Vidal-Trécan G. L’amélioration de la prise en charge de la douleur dans un service d’accueil en urgence augmente-t-elle la satisfaction des patients ? Résultats d’une étude comparative avant–après instauration de la prise en charge de la douleur dès l’arrivée. Rev Epidemiol Sante Publique 2009. [DOI: 10.1016/j.respe.2009.02.123] [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: 11/28/2022] Open
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Couturaud F, Pernod G, Pison C, Mismetti P, Sanchez O, Meyer G, Parent F, Girard P, Simonneau G, Drouet L, Gueret P, Jego P, Delaval P, Duhamel E, Gruel Y, Delahousse B, Regina S, Pottier P, Connaud J, Lecomte F, Provost K, Vilmans N, Gosset X, Bura-Rivière A, Meach G, Lacut K, Bosson JL, Guillot K, Mottier D, Leroyer C. [Prolongation of anti vitamin K treatment for 18 months versus placebo after 6 months treatment of a first episode of ideopathic pulmonary embolism: a mutlicentre, randomised double blind trail. The PADIS-EP Trial]. Rev Mal Respir 2008; 25:885-93. [PMID: 18946418 DOI: 10.1016/s0761-8425(08)74358-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND After stopping a 3 to 6 months course of oral anticoagulation for a first episode of idiopathic venous thromboembolism (VTE), the risk of recurrent VTE is high (10% per year). In this setting, international guidelines recommend at least 6 months treatment. However, this recommendation is not satisfactory for the following reasons: (1) no randomized trial has compared 6 months to extended duration (2 years) anticoagulation; and (2), even though the frequency of recurrent VTE is similar after pulmonary embolism (PE) and deep vein thrombosis (DVT), the fatality rate of recurrent VTE after PE is higher than that after DVT. METHODS A French multicentre double blind randomized trial. The main objective is to demonstrate, after a first episode of symptomatic idiopathic PE treated for 6 months using a vitamin K antagonist, that extended anticoagulation for 18 months (INR between 2 and 3) is associated with an increased benefit / risk ratio (recurrent VTE and severe anticoagulant-related bleeding) compared to placebo. The double blind evaluation is ensured using by active warfarin and placebo, and blinded INR. The protocol was approved by the ethics board of the Brest Hospital on the 7th of March 2006. For an alpha risk of 5% and a beta risk of 20%, the estimated sample size is 374 patients. EXPECTED RESULTS This study has the potential to: (1) demonstrate that the benefit / risk ratio of extended anticoagulation for 18 months is higher than that observed with placebo in patients with a first episode of idiopathic PE initially treated for 6 months, during and after the treatment period; and (2) to validate or invalidate the contribution of isotope lung scans, lower limb Doppler ultrasound and D-Dimer at 6 months of treatment as predictors of recurrent VTE (medico-economic analysis included).
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Affiliation(s)
- F Couturaud
- Département de Médecine interne et pneumologie, CHU de Brest, France.
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Zalfen AM, Nizet D, Jérôme C, Jérôme R, Frankenne F, Foidart JM, Maquet V, Lecomte F, Hubert P, Evrard B. Controlled release of drugs from multi-component biomaterials. Acta Biomater 2008; 4:1788-96. [PMID: 18583206 DOI: 10.1016/j.actbio.2008.05.021] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [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: 01/02/2008] [Revised: 04/24/2008] [Accepted: 05/14/2008] [Indexed: 01/22/2023]
Abstract
In order to control their release, drugs are encapsulated into systems which are expected to provide a certain site with a predetermined amount of drug over a well-defined period of time. Here we report on a multi-component drug delivery biomaterial that consists of a hydrogel matrix in which drug-loaded biodegradable microcarriers are dispersed, and whose potential applications could be found in the design of implantable devices with long-term activity, as required by contraceptive and hormone replacement treatments. The release profile of the drug can actually be tuned by the complex interplay of several release mechanisms, including the permeability and eventually the degradation rate of the microcarriers and the diffusion through the hydrogel. The hydrogel consisted of 2-hydroxyethyl methacrylate cross-linked by ethylene glycol dimethacrylate. The microcarriers were biodegradable poly-epsilon-caprolactone (PCL) microspheres in which active molecules, such as levonorgestrel (LNG), were encapsulated. The hydrogels were characterized by water swelling, thermal properties, LNG diffusion through drug-free and drug-depleted hydrogel membranes and LNG release from devices with drug dispersed in the hydrogel. The PCL microspheres were observed by scanning electron microscopy; their size distribution, LNG loading and release were also investigated. The hydrogel-microsphere assemblies were characterized in terms of the distribution of the microspheres within the hydrogel, water swelling and the release of the encapsulated molecules. The developed device, due to its composite structure, has the ability to combine several release mechanisms, leading to drug release obeying zero-order kinetics for most of the time.
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Affiliation(s)
- A M Zalfen
- Center for Education and Research on Macromolecules, University of Liège, Liège 4000, Belgium.
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Lecomte F, Dodson J. Glacial cycles promote the evolution of the intra-specific diversity in high latitude marine fishes. Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.04.569] [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: 11/25/2022]
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Wavreille G, Frick L, Cassio JB, Soenen M, Chantelot C, Lecomte F. [A secondary bleeding false aneurysm of the superomedial genicular artery after distal femoral epiphysiodesis: a case report]. Rev Chir Orthop Reparatrice Appar Mot 2008; 94:193-196. [PMID: 18420066 DOI: 10.1016/j.rco.2007.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/08/2007] [Indexed: 05/26/2023]
Abstract
A 16-year-old male developed a false aneurysm of the superomedial genicular artery five weeks after medial distal femoral epiphysiodesis. The aneurysm was revealed by inexhaustible bleeding from the medial aspect of the knee and the presence of acute hemorrhage which resolved spontaneously. Physical examination disclosed disunion of the surgical wound at the apex of a pulsatory tumefaction over the medial aspect of the knee. AngioCT enabled the diagnosis of a false aneurysm of the superomedial genicular artery. Emergency surgery was undertaken to drain the hematoma and exclude the false aneurysm by ligating the superomedial genicular artery.
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Affiliation(s)
- G Wavreille
- Clinique dorthopédie, hôpital Roger-Salengro, CHRU de Lille, boulevard Emile-Laine, 59045 Lille cedex, France.
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Abstract
PURPOSE OF THE STUDY Resection of the proximal row of the carpus which simplifies the radiocarpal joint is mainly performed for advanced collapse. With the development of several therapeutic alternatives, further study of outcome is warranted to better identify indications. MATERIAL AND METHODS Twenty-five patients who underwent proximal row carpectomy between January 1999 and February 2004 were reviewed clinically and radiologically at 30 months mean follow-up. Three main etiologies were noted: scaphoid fracture (n=9), scapholunate dissociation (n=9), Kienböck disease (n=6). A posterior approach was used for all patients. Outcome was assessed clinically (pain, force, mobility), radiologically (carpal height, radiocapital space), and subjectively by the patient. Resumption of occupational activity was noted as were the Cooney and Culp scores. RESULTS Average flexion-extension was 60 degrees . Average wrist force was 65% of the healthy side. Pain improved in 88% of wrists and the mean subjective score was 15.2. The mean Cooney and Culp scores were 58 and 67.8 respectively. A reduction in the height of the new articular space was not correlated with less favorable clinical outcome. Outcome in patients with Kienböck disease were less favorable than in trauma patients but the difference did not reach significance. DISCUSSION First row carpectomy is a paliative procedure which should only be performed when conservative treatment is no longer a valid option. Indications should be limited to Watson grade II, before cartilaginous damage affects the head of the capitatum. New techniques such as fusion-shortening, theoretically similar to resection, can now be used for advances collapse. We prefer resection over four-bone arthrodesis because of the lower risk of complications. In Kienböck disease, first row carpectomy should only be used for selected patients (Lichtmann III) due to the risk of early degeneration of the capitatum and radius heads.
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Affiliation(s)
- F Lecomte
- Service d'Orthopédie B, Chirurgie de la main et du membre supérieur, hôpital Roger-Salengro, CHRU de Lille, 59000 Lille.
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Lecomte F, Oppenheimer A, Ginsburg C, Dhainaut J, Claessens Y. Computer-assisted prescription improves the delay of morphine infusion after nurse triage in patients admitted in the emergency department with intense pain: a randomized trial. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s0993-9857(06)76355-5] [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: 10/22/2022]
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Rozet E, Dewé W, Chiap P, Lecomte F, Hubert P. [The transfer of an automated method for the determination of noradrenaline in human urine: using total error as decision criterion]. Acta Clin Belg 2006; 61 Suppl 1:57-9. [PMID: 16700154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Two new statistical approaches based on the total error of measurements were applied to the transfer of an automated method for the determination of noradrenalin in human urine by LC-ECD coupled on-line to SPE. They showed that the receiving laboratory was mastering the analytical procedure allowing it to use the method in routine. Furthermore the risk based approach gave guarantee that the risk to have future measurements out of specification in the receiving laboratory was smaller than 5%, therefore being a risk management tool.
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Affiliation(s)
- E Rozet
- Laboratoire de Chimie Analytique, Institut de Pharmacie, Universite de Liège Avenue de l'Hôpital, 1, Bat. B36, 4000 Liege, Belgique.
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Abstract
INTRODUCTION Staphylococcus aureus (SA) has acquired a leading role in nosocomial pneumonia in terms of both frequency and severity, and poses therapeutic problems, namely antibiotic resistance and difficulties in the management of anti-staphylococcal drugs. STATE OF THE ART Epidemiological data confirm that SA is implicated in almost a quarter nosocomial pneumonias, of which about a half are due to methicillin resistant SA (MRSA) in France. The pathophysiology of these infections most often involves inhalation following oropharyngeal carriage. In addition to the risk factors common to all nosocomial pneumonias there are the particular roles of head injury and coma, leading to an increased frequency of SA infection in neuro-surgical patients. PERSPECTIVES The non-specific clinical picture, the grave prognosis of these pneumonias and the ineffectiveness against MRSA of the antibiotics used in the treatment of Gram negative infections make empirical treatment difficult. CONCLUSION In addition to the antibiotics classically active against SA (notably methicillin for sensitive strains and glycopeptides for MRSA) new agents may allow improvement in the treatment of these patients, even if their place is not yet definitively established.
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Affiliation(s)
- D Benhamou
- Service de Pneumologie Hôpital de Bois-Guillaume, CHU de Rouen, France.
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Robaday S, Belizna C, Kerleau JM, Héron F, Cailleux N, Lecomte F, Marie I, Lévesque H. La tuberculose péritonéale : une entité toujours présente. À propos de quatre observations. Rev Med Interne 2005; 26:738-43. [PMID: 15946774 DOI: 10.1016/j.revmed.2005.05.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/03/2004] [Accepted: 05/02/2005] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Tuberculous peritonitis, a major problem in developing country, occurs preferentially in immigrant population and in patients with acquired immune deficiency syndrome (AIDS). Although rare in France, it did not disappear and epidemiological, clinical and therapeutic approach deserve to be reminded. EXEGESIS We reported 4 patients (immigrants in two cases), occurred in caucasian and African persons (one with AIDS). Disease was characterized by fever, abdominal pain, anorexia, weight loss and ascites. Biological and radiological were unconclusive. Cell count analysis from ascitic fluid show a lymphocytic predominance with negative direct smear for Ziehl-Neelsen strain. Tuberculous peritonitis was established with combined visual and histological diagnosic laparoscopic examination. CONCLUSION These observations have the interest to underline that tuberculous peritonitis must be evoked in case of lymphocytic ascitis. We believe an aggressive diagnostic approach, particulary with peritoneal biopsy, is warranted for the diagnosis of tuberculous peritonitis. Validity of PCR amplification is ascitic fluid still needs to be established.
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Affiliation(s)
- S Robaday
- Département de médecine interne, CHU de Rouen, 76031 Rouen cedex, France
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Lucas B, Grégoire G, Lecomte F, Reimann B, Schermann JP, DesfranÇois * C. Infrared spectroscopy of mass-selected neutral molecular systems without chromophore: the formamide monomer and dimer. Mol Phys 2005. [DOI: 10.1080/00268970500052270] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lecomte F, Siepmann J, Walther M, MacRae RJ, Bodmeier R. Polymer blends used for the aqueous coating of solid dosage forms: importance of the type of plasticizer. J Control Release 2004; 99:1-13. [PMID: 15342176 DOI: 10.1016/j.jconrel.2004.05.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.0] [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: 03/01/2004] [Accepted: 05/25/2004] [Indexed: 11/26/2022]
Abstract
The aim of this study was to investigate the importance of the type of plasticizer in polymer blends used for the coating of solid dosage forms, comparing a lipophilic and a hydrophilic plasticizer (dibutyl sebacate (DBS) and triethyl citrate (TEC)). In vitro drug release from propranolol hydrochloride (propranolol HCl)-loaded pellets coated with blends of ethyl cellulose (EC) and Eudragit L (100:0, 75:25, 50:50, 25:75 and 0:100 w/w) was investigated at low as well as at high pH. To better understand the underlying mass transport mechanisms, the physicochemical properties of the film coatings (e.g. mechanical resistance, water uptake and dry weight loss behavior) were determined. Interestingly, drug release strongly depended on the type of plasticizer. Importantly, not only the slope but also the shape of the release curves was affected, indicating that the chemical nature of the plasticizer plays a major role for the underlying drug release mechanisms. Diffusion through the intact polymer coatings and/or through water-filled cracks was found to be dominating for the control of drug release. The relative importance of these pathways strongly depended on the polymer blend ratio and type of plasticizer. In contrast to DBS, TEC rapidly leached out of the coatings, resulting in decreasing mechanical resistances of the films and, thus, facilitated crack formation. In addition, the hydrophilicity of the plasticizer significantly affected the water uptake behavior of the film coatings and, hence, changes in the coatings' toughness and drug permeability. Also the relative affinity of the plasticizer to the different polymers was found to be of significance. In contrast to TEC, DBS has a higher affinity to EC than to Eudragit L, resulting in potential redistributions of this plasticizer within the polymeric systems and changes in the release profiles during storage. Importantly, these effects could be avoided with appropriate curing conditions and preparation techniques for the coating dispersions.
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Affiliation(s)
- F Lecomte
- College of Pharmacy, Freie Universitaet Berlin, Kelchstr. 31, 12169 Berlin, Germany
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Lecomte F, Grant WS, Dodson JJ, Rodriguez-Sanchez R, Bowen BW. Living with uncertainty: genetic imprints of climate shifts in East Pacific anchovy (Engraulis mordax) and sardine (Sardinops sagax). Mol Ecol 2004; 13:2169-82. [PMID: 15245392 DOI: 10.1111/j.1365-294x.2004.02229.x] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the upwelling zone of the northeastern Pacific, cold nutrient-rich conditions alternate with warm nutrient-poor intervals on timescales ranging from months to millennia. In this setting, the abundances of Pacific sardine (Sardinops sagax) and northern anchovy (Engraulis mordax) fluctuate by several orders of magnitude, with sardine dominating during warm conditions and anchovy dominating during cool conditions. Two population models can explain the response of these fishes to adverse conditions. Under the basin model, species distributions contract to a central (optimal) range during population crashes. Expectations of this model may include a single range-wide population with a decline in genetic diversity on both sides of a central refuge. In contrast, the self-recruitment model invokes a series of local oceanographic domains that maintain semi-isolated subpopulations. During adverse conditions, some subpopulations cannot complete the life cycle within the local environment and are extirpated. Expectations of this model include some degree of population genetic structure and no clear gradient in genetic diversity. We examined mitochondrial DNA cytochrome b sequences to assess these competing models for anchovy (N = 196; 539 bp) and sardine (N = 107; 425 bp). The mitochondrial DNA gene genealogies are shallow but diverse for both species. Haplotype frequencies are homogeneous among subpopulations, but genetic diversities peak for both species along Baja California and adjacent southern California. Mismatch distributions and Tajima's D-values reveal distinctive signatures of population bottlenecks and expansions. Sardine haplotypes coalesce at approximately 241,000 years bp, with an initial female effective population size Nf0 = 0 followed by exponential growth to Nf1 = 115 million. Anchovy haplotypes coalesce at approximately 282,000 years bp, with an initial population size of Nf0 = 14,000, followed by exponential growth to Nf1 = 2.3 million. These results indicate a founder event for sardine and a severe population decline for anchovy in the California Current during the late Pleistocene. Overall, these data support the basin model on decadal timescales, although local recruitment may dominate on shorter timescales.
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Affiliation(s)
- F Lecomte
- Québec-Océan, Département de Biologie, Université Laval, Ste Foy, Québec, Canada
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Kerleau K, Fily F, Lecomte F, Kerleau JM, Lévesque H, Courtois H. Sida chez un octogénaire révélé par une diarrhée chronique. Rev Med Interne 2004; 25:245-7. [PMID: 14990300 DOI: 10.1016/j.revmed.2003.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2003] [Accepted: 12/01/2003] [Indexed: 11/27/2022]
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Lecomte F, Martin I, Romero J, Richard P, Ginsburg C, Dhainaut J. 180 - Intérêt d’un protocole infirmier pour la délivrance de paracétamol par l’IAO. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/s0993-9857(04)97190-7] [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: 10/22/2022]
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Lemarié V, Belizna C, Cailleux N, Lecam-Duchez V, Borg J, Marie I, Kerleau J, Héron F, Lecomte F, Houdent C, Ozenne G, Courtois H, Lévesque H. Étude prospective comparative d'introduction d'un traitement par fluindione à posologie classique ou faible chez le sujet âgé. Rev Med Interne 2003. [DOI: 10.1016/s0248-8663(03)80375-2] [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: 10/25/2022]
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Marie I, Héron F, Lecomte F, Jarlier V, Truffot-Pernot C, Laquerriere A, Huerre M, Levesque H, Courtois H. Multiple cerebral abscesses as a complication of Mycobacterium fortuitum infection. Eur J Intern Med 2003; 14:386-389. [PMID: 14769500 DOI: 10.1016/s0953-6205(03)90008-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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] [Received: 12/30/2002] [Accepted: 06/10/2003] [Indexed: 11/16/2022]
Abstract
Mycobacterium fortuitum is a rapidly growing, nontuberculous mycobacteria that has rarely been associated with central nervous system impairment. We describe the case of a patient who developed multiple cerebral abscesses revealing Mycobacterium fortuitum infection. Brain biopsy specimens showed suppurative, noncaseating, granulomatous inflammation consisting of epithelioid histiocytes and multinucleated giant cells. All clinical signs and CT scan cerebral lesions disappeared after institution of appropriate antimycobacterial therapy.
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Affiliation(s)
- I. Marie
- Department of Internal Medicine, Centre Hospitalier Universitaire de Rouen-Boisguillaume, 76031 Rouen Cedex, France
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Lecomte F, Siepmann J, Walther M, MacRae RJ, Bodmeier R. Blends of enteric and GIT-insoluble polymers used for film coating: physicochemical characterization and drug release patterns. J Control Release 2003; 89:457-71. [PMID: 12737848 DOI: 10.1016/s0168-3659(03)00155-x] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.6] [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: 10/27/2022]
Abstract
THE OBJECTIVES OF THIS STUDY WERE: (i). to use blends of gastrointestinal tract (GIT)-insoluble and enteric polymers (ethyl cellulose and Eudragit L) as coating materials for multiparticulate controlled release dosage forms; (ii). to investigate the effects of the polymer blend ratio and coating level on the resulting drug release patterns; and (iii). to explain the observed phenomena based on the physicochemical properties of the systems. Propranolol HCl-loaded pellets were coated in a fluidized bed coater with organic polymer solutions; thin, drug-containing and drug-free, polymeric films were prepared using a casting knife. In vitro drug release, water uptake and dry weight loss studies were performed in 0.1 M HCl and phosphate buffer pH 7.4, respectively. The apparent drug diffusion coefficients within the polymeric systems were determined using different experimental and theoretical techniques (side-by-side diffusion cells, in vitro drug release from thin films; exact and approximate solutions of Fick's second law of diffusion). A broad range of drug release patterns from coated pellets could be achieved by varying the GIT-insoluble:enteric polymer blend ratio. With increasing relative amounts of Eudragit L, the release rates in both media significantly increased. The increase at low pH could be attributed to an increase in water uptake, as observed with thin films. Interestingly, only partial Eudragit L leaching occurred in phosphate buffer pH 7.4 even at high enteric polymer contents, indicating that the GIT-insoluble polymer effectively hindered the dissolution of the entrapped Eudragit L. At high pH, both polymer leaching and polymer swelling contributed to the control of drug release. The determined apparent drug diffusion coefficients take the two effects adequately into account.
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Affiliation(s)
- F Lecomte
- College of Pharmacy, Freie Universität Berlin, Kelchstr 31, 12169 Berlin, Germany
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Kahn J, Drupt F, Lemonnier C, Lepers S, Lecomte F, Solary E, Lévy V, Piette A, Prin L, Blétry O. Intérêt du dépistage d'une hémopathie latenteau cours des hyperéosinophilies prolongées inexpliquées. Rev Med Interne 2002. [DOI: 10.1016/s0248-8663(02)80496-9] [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: 10/25/2022]
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Lecomte F, Madri D, Nouvellon M, Muller E, Lauérière L, Cailleux N, Heron F, Kerleau J, Marie I, Houdent C, Lévesque H, Courtois H. Les septicémies dans un service de médecine interne: Une situation fréquente et sévère.À propos de 99 cas consécutifs observés en un an. Rev Med Interne 2002. [DOI: 10.1016/s0248-8663(02)80170-9] [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: 11/16/2022]
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Houdent C, Zaouali G, Lecomte F, Cuvelier A, Henry J, Primard E, Khalil H, Courtois H. Pyomyosite tuberculeuse isolée. Rev Med Interne 2002. [DOI: 10.1016/s0248-8663(02)80302-2] [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: 10/25/2022]
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