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Bourque C, Dumont E, Martisella M, Daoust L, Cantin S, Levasseur MC, de Steur Q, Duval M, Marquis MA, Sultan S. L’expérience à long terme des parents endeuillés en oncologie pédiatrique : une étude rétrospective de 2 à 18 ans après le décès d’un enfant. PSYCHO-ONCOLOGIE 2023. [DOI: 10.3166/pson-2022-0222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Objectifs : Cette étude rétrospective et transversale vise à comprendre l’expérience à long terme des parents endeuillés en oncologie pédiatrique et les différences du deuil parental en fonction du genre.
Matériel et méthodes : Un questionnaire multisectionnel coconstruit avec des cliniciens et intervenants en suivi de deuil a été tenu en ligne en 2018 et 2019. Les participants au sondage étaient des parents dont l’enfant était décédé au service d’hématologie-oncologie du CHU Sainte-Justine 2 à 18 ans auparavant. Des sections spécifiques sur les réactions, les changements et les souvenirs ont fait l’objet d’analyses descriptives.
Résultats : Les réponses de 48 parents ont été analysées. Les résultats indiquent que les mères ont tendance à modifier certaines de leurs activités sociales, alors que les pères cherchent plutôt à retrouver leurs habitudes. Les réactions initialement fortes des parents s’atténuent au fil du temps sans disparaître, en particulier la tristesse et les troubles du sommeil. Les parents ont des souvenirs apaisants des interactions et des soins reçus des intervenants en milieux clinique et communautaire même plusieurs années après le décès de leur enfant.
Conclusion : L’offre de soutien psychosocial communautaire et professionnel à long terme est pertinente, de même aux besoins des couples et aux besoins individuels des parents en fonction du genre.
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Cock IE, Baghtchedjian L, Cordon ME, Dumont E. Phytochemistry, Medicinal Properties, Bioactive Compounds, and Therapeutic Potential of the Genus Eremophila (Scrophulariaceae). Molecules 2022; 27:molecules27227734. [PMID: 36431834 PMCID: PMC9697388 DOI: 10.3390/molecules27227734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/01/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022]
Abstract
The genus Eremophila (family Scrophulariaceae) consists of approximately 200 species that are widely distributed in the semi-arid and arid regions of Australia. Multiple Eremophila spp. are used as traditional medicines by the First Australians in the areas in which they grow. They are used for their antibacterial, antifungal, antiviral, antioxidant, anti-diabetic, anti-inflammatory, and cardiac properties. Many species of this genus are beneficial against several diseases and ailments. The antibacterial properties of the genus have been relatively well studied, with several important compounds identified and their mechanisms studied. In particular, Eremophila spp. are rich in terpenoids, and the antimicrobial bioactivities of many of these compounds have already been confirmed. The therapeutic properties of Eremophila spp. preparations and purified compounds have received substantially less attention, and much study is required to validate the traditional uses and to highlight species that warrant further investigation as drug leads. The aim of this study is to review and summarise the research into the medicinal properties, therapeutic mechanisms, and phytochemistry of Eremophila spp., with the aim of focussing future studies into the therapeutic potential of this important genus.
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Affiliation(s)
- Ian Edwin Cock
- Centre for Planetary Health and Food Security, Griffith University, Brisbane 4127, Australia
- Correspondence: ; Tel.: +61-7-3735-7637
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Varghese G, Kaplan P, Do C, Barrer M, Ezzedine K, Zippin J, Dumont E. LB950 A randomised trial of a wearable uv dosimeter for skin cancer prevention. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.969] [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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Sorriento A, Cafarelli A, Spinnato P, Russo A, Lisignoli G, Rabusseau F, Cabras P, Dumont E, Ricotti L. Design, Development and Validation of a Knee Brace to Standardize the US Imaging Evaluation of Knee Osteoarthritis. IEEE J Transl Eng Health Med 2022; 10:1800308. [PMID: 35391755 PMCID: PMC8979410 DOI: 10.1109/jtehm.2021.3137628] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 12/09/2021] [Accepted: 12/17/2021] [Indexed: 11/13/2022]
Abstract
Objective: A repeatable and reliable follow-up of knee injuries would be desirable to prevent delayed diagnosis and to monitor the efficacy of the applied treatment over time. Ultrasound (US) techniques are an attractive option to this purpose, since they are safe, low-cost and non-invasive. However, its use in the clinical practice is limited by the high dependency on the operator’s experience. Hence, the objective of this study is to provide a standardization of the US image acquisition process for knee osteoarthritis (OA) allowing an extended clinical use of US technologies in this domain. Methods: Clinical specifications were provided by expert musculoskeletal radiologists thus identifying the subject poses and the US probe positions needed to evaluate the cartilage structure, signs of synovitis and joint effusion. Such considerations were used to derive the technical requirements needed for the development of a wearable brace equipped with specific openings to guide the correct placement of the probe. The feasibility of the developed wearable brace was tested on three healthy volunteers, which were asked to acquire informative US images, similar to the reference images performed by the musculoskeletal radiologist. Results: Thanks to the knee brace, the untrained subjects were able to self-acquire informative B-mode images comparable to the corresponding images acquired by an expert clinician. Discussion/Conclusion: The use of a knee brace intended for knee OA US diagnosis demonstrated the possibility to standardize the acquisition protocol and make its application achievable also for untrained subjects, representing a key step toward tele-ultrasonography.
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Affiliation(s)
- A Sorriento
- BioRobotics Institute, Scuola Superiore Sant'Anna 56127 Pisa Italy
- Department of Excellence in Robotics and AIScuola Superiore Sant'Anna 56127 Pisa Italy
| | - A Cafarelli
- BioRobotics Institute, Scuola Superiore Sant'Anna 56127 Pisa Italy
- Department of Excellence in Robotics and AIScuola Superiore Sant'Anna 56127 Pisa Italy
| | - P Spinnato
- Diagnostic and Interventional RadiologyIRCCS Istituto Ortopedico Rizzoli 40136 Bologna Italy
| | - A Russo
- Clinica 2, IRCCS Istituto Ortopedico Rizzoli 40136 Bologna Italy
| | - G Lisignoli
- SC Laboratorio di Immunoreumatologia e Rigenerazione TissutaleIRCSS Istituto Ortopedico Rizzoli 40136 Bologna Italy
| | - F Rabusseau
- Image Guided Therapy (IGT) 33600 Pessac France
| | - P Cabras
- Image Guided Therapy (IGT) 33600 Pessac France
| | - E Dumont
- Image Guided Therapy (IGT) 33600 Pessac France
| | - L Ricotti
- BioRobotics Institute, Scuola Superiore Sant'Anna 56127 Pisa Italy
- Department of Excellence in Robotics and AIScuola Superiore Sant'Anna 56127 Pisa Italy
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Fontana F, Iberite F, Cafarelli A, Aliperta A, Baldi G, Gabusi E, Dolzani P, Cristino S, Lisignoli G, Pratellesi T, Dumont E, Ricotti L. Development and validation of low-intensity pulsed ultrasound systems for highly controlled in vitro cell stimulation. Ultrasonics 2021; 116:106495. [PMID: 34186322 DOI: 10.1016/j.ultras.2021.106495] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 04/25/2021] [Accepted: 06/02/2021] [Indexed: 06/13/2023]
Abstract
This work aims to describe the development and validation of two low-intensity pulsed ultrasound stimulation systems able to control the dose delivered to the biological target. Transducer characterization was performed in terms of pressure field shape and intensity, for a high-frequency range (500 kHz to 5 MHz) and for a low-frequency value (38 kHz). This allowed defining the distance, on the beam axis, at which biological samples should be placed during stimulation and to exactly know the intensity at the target. Carefully designed retaining systems were developed, for hosting biological samples. Sealing tests proved their impermeability to external contaminants. The assembly/de-assembly time of the systems resulted ~3 min. Time-domain acoustic simulations allowed to precisely estimate the ultrasound beam within the biological sample chamber, thus enabling the possibility to precisely control the pressure to be transmitted to the biological target, by modulating the transducer's input voltage. Biological in vitro tests were also carried out, demonstrating the sterility of the system and the absence of toxic and inflammatory effects on growing cells after multiple immersions in water, over seven days.
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Affiliation(s)
- F Fontana
- The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy; Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
| | - F Iberite
- The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy; Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
| | - A Cafarelli
- The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy; Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
| | - A Aliperta
- The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy; Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
| | - G Baldi
- The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy; Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
| | - E Gabusi
- IRCCS Istituto Ortopedico Rizzoli, SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, 40136 Bologna, Italy.
| | - P Dolzani
- IRCCS Istituto Ortopedico Rizzoli, SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, 40136 Bologna, Italy.
| | - S Cristino
- Dipartimento Scienze Biologiche, Geologiche e Ambientali (BiGeA), Università di Bologna, 40126 Bologna, Italy.
| | - G Lisignoli
- IRCCS Istituto Ortopedico Rizzoli, SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, 40136 Bologna, Italy.
| | | | - E Dumont
- Image Guided Therapy, 33600 Pessac, France.
| | - L Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy; Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
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De Bleye C, Fontaine M, Dumont E, Sacré PY, Hubert P, Theys N, Ziemons E. Raman imaging as a new analytical tool for the quality control of the monitoring of osteogenic differentiation in forming 3D bone tissue. J Pharm Biomed Anal 2020; 186:113319. [PMID: 32361470 DOI: 10.1016/j.jpba.2020.113319] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/09/2020] [Accepted: 04/15/2020] [Indexed: 12/20/2022]
Abstract
In this study, adipose-derived stem cells (ASCs) are used to produce 3D bone grafts. The safety and the feasibility of using these bone grafts have been already showed and quality controls are already implemented. However, a cheaper, fast and non-destructive technique is required to monitor the osteogenic differentiation process. Here, the use of Raman imaging to monitor the synthesis of the extracellular matrix and its progressive mineralization occurring during the osteogenic differentiation process is investigated for the first time on a 3D in forming bone tissue. The attention was focused on Raman bands related to this matrix belonging to phosphate, phenylalanine and hydroxyproline, which are very distinctive and intense. The kinetic of the osteogenic differentiation process was first compared between a 2D and a 3D forming bone tissue. It was observed that the kinetics of the osteogenic differentiation process is slower in 3D in forming bone tissue. In a second step, an evaluation of the reliability of the Raman imaging method was performed including a study of the influence of the harvest biopsies position on the forming 3D bone tissue. The repeatability and the specificity of this method were also demonstrated. In a last step, several batches of ASCs were cultured and analyzed in 3D at different time points using Raman imaging. From the mean Raman spectra, mineral to matrix ratios (MTMR) were determined and used to evaluate the formation of mineral deposits accompanying the extracellular matrix synthesis which is indicative of an ongoing osteogenic differentiation process. These ratios peaked between the day 35 and 49. This observation was very interesting since it corresponds to the time at which the 3D bone grafts are used for the patient surgery. To conclude, Raman imaging allowed fast acquisition and time-resolved monitoring in vitro of the mineralization of extracellular matrix during osteogenic differentiation.
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Affiliation(s)
- C De Bleye
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium.
| | - M Fontaine
- Novadip Biosciences, Rue Grandbonpré 11, 1435 Mont-Saint-Guibert, Belgium
| | - E Dumont
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
| | - P-Y Sacré
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
| | - Ph Hubert
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
| | - N Theys
- Novadip Biosciences, Rue Grandbonpré 11, 1435 Mont-Saint-Guibert, Belgium
| | - E Ziemons
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
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Nader J, Marzouk M, Dagenais F, Baillot R, Mohammadi S, Kalavrouziotis D, Laflamme M, Jacques F, Perron J, Dumont E, Charbonneau E, Doyle D, Voisine P. P4592Total arterial revascularization in severe coronary artery disease: a 25-years single-center experience. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0977] [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
Objective
To evaluate very long-term survival of Total Arterial Revascularization (TAR) in patients with severe coronary artery disease (CAD) undergoing Coronary Artery Bypass Grafting (CABG).
Methods
Between January 1992 and December 2017, 13798 patients aged 70 years or less underwent primary isolated CABG with at least two grafts in our department. Patients receiving TAR were matched by propensity-score analysis to the rest of the population. All pre- and peri-operative data were collected prospectively in our institutional database. Long-term survival was assessed using provincial vital statistics data. The primary outcome was very-long time survival, secondary outcomes were operative mortality and early complications.
Results
Propensity-score matching identified 602 pairs with similar preoperative characteristics. In the matched control group, 65.4% and 30.9% of patients received 1 and 2 arterial grafts, respectively, whereas 3 or more arterial grafts were used in 3.6%. Less distal anastomoses (2.57±0.77 vs 3.39±0.97, p<0.0001) were performed in TAR patients, who therefore had a shorter cross-clamping time (44.2±14.7 vs 52.9±19.6, p<0.0001). Operative mortality was similar (0.5% vs 1.0%, p=0.51) and there was no difference in the rate of mediastinitis (2.5% vs 0.8%, p=0.28)for the TAR and matched control groups, respectively. TAR patients were less likely to receive blood transfusions (34.9% vs 40.7%, p=0.04). The average follow-up was 13.4±6.7 years. Cox-adjusted survival was significantly better in patients receiving TAR compared to the matched population, up to 25 years postoperatively (HR 0.87 [0.86–0.88], p<0.0001, Figure 1).
Figure 1
Conclusion
Total arterial revascularization is not associated with increased perioperative risk of complications and provides long-term survival benefits up to 25 years postoperatively.
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Affiliation(s)
- J Nader
- Quebec Heart and Lung Institute, Quebec, Canada
| | - M Marzouk
- Quebec Heart and Lung Institute, Quebec, Canada
| | - F Dagenais
- Quebec Heart and Lung Institute, Quebec, Canada
| | - R Baillot
- Quebec Heart and Lung Institute, Quebec, Canada
| | - S Mohammadi
- Quebec Heart and Lung Institute, Quebec, Canada
| | | | - M Laflamme
- Quebec Heart and Lung Institute, Quebec, Canada
| | - F Jacques
- Quebec Heart and Lung Institute, Quebec, Canada
| | - J Perron
- Quebec Heart and Lung Institute, Quebec, Canada
| | - E Dumont
- Quebec Heart and Lung Institute, Quebec, Canada
| | | | - D Doyle
- Quebec Heart and Lung Institute, Quebec, Canada
| | - P Voisine
- Quebec Heart and Lung Institute, Quebec, Canada
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Mansouri MA, Sacré PY, Coïc L, De Bleye C, Dumont E, Bouklouze A, Hubert P, Marini RD, Ziemons E. Quantitation of active pharmaceutical ingredient through the packaging using Raman handheld spectrophotometers: A comparison study. Talanta 2019; 207:120306. [PMID: 31594606 DOI: 10.1016/j.talanta.2019.120306] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 11/18/2022]
Abstract
Handheld Raman spectroscopy is actually booming. Recent devices improvements aim at addressing the usual Raman spectroscopy issues: fluorescence with shifted-excitation Raman difference spectroscopy (SERDS), poor sensitivity with surface enhanced Raman scattering (SERS) and information only about the sample surface with spatially offset Raman spectroscopy (SORS). While qualitative performances of handheld devices are generally well established, the quantitative analysis of pharmaceutical samples remains challenging. The aim of this study was to compare the quantitative performances of three commercially available handheld Raman spectroscopy devices. Two of them (TruScan and IDRaman mini) are equipped with a 785 nm laser wavelength and operate in a conventional backscattering mode. The IDRaman has the Orbital Raster Scanning (ORS) option to increase the analyzed surface. The third device (Resolve) operates with an 830 nm laser wavelength both in backscattering and in SORS modes. The comparative study was carried out on ibuprofen-mannitol-microcrystalline cellulose ternary mixtures. The concentration of ibuprofen ranged from 24 to 52% (w/w) while the proportions of the two excipients were varied to avoid cross-correlation as much as possible. Analyses were performed either directly through a glass vial or with the glass vial in an opaque polypropylene flask, using a validated FT-NIR spectroscopy method as a reference method. Chemometric analyses were carried out with the Partial Least Squares Regression (PLS-R) algorithm. The quantitative models were validated using the total error approach and the ICH Q2 (R1) guidelines with ± 15% as acceptance limits.
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Affiliation(s)
- M Alaoui Mansouri
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium; Bio-Pharmaceutical and Toxicological Analysis Research Team, Laboratory of Pharmacology and Toxicology, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
| | - P-Y Sacré
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium.
| | - L Coïc
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium
| | - C De Bleye
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium
| | - E Dumont
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium
| | - A Bouklouze
- Bio-Pharmaceutical and Toxicological Analysis Research Team, Laboratory of Pharmacology and Toxicology, Faculty of Medicine and Pharmacy, University Mohammed V, Rabat, Morocco
| | - Ph Hubert
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium
| | - R D Marini
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium
| | - E Ziemons
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000, Liege, Belgium
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Woudberg S, Van Jaarsveld J, Dumont E. Predicting the pressure drop of a biofilter and the specific surface area of the packing material. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.09.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Cafarelli A, Chanel LA, Di Bartolo F, Locteau H, Tognarelli S, Dumont E, Menciassi A. Ultrasound Acoustic Radiation Force Impulse imaging for High Intensity Focused Ultrasound focal spot localization. Annu Int Conf IEEE Eng Med Biol Soc 2018; 2018:5713-5716. [PMID: 30441633 DOI: 10.1109/embc.2018.8513591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Focal spot precise localization highly contributes to the accuracy and safety of High Intensity Focused Ultrasound (HIFU) therapies, and it is usually performed by means of Magnetic Resonance-Acoustic Radiation Force Impulse imaging (MR-ARFI). Acoustic Radiation Force Impulse imaging using ultrasound (US-ARFI) is herein proposed as a valid alternative to MR-ARFI for an accurate and non-destructive detection of the focal spot position during the pre-treatment phase. To this aim, a system composed of a HIFU transducer for generating the acoustic radiation force and a 2D confocal ultrasound probe for measuring the induced micro-displacement have been used. Then, an algorithm based on the Normalized Cross Correlation was implemented for the creation of a displacement map in which the highest displacement area, corresponding to the focal spot region, is unequivocally visualized. The feasibility of the proposed USARFI method for HIFU focal spot localization was successfully demonstrated in a tissue mimicking phantom model.
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Cartier A, Voisine P, Dumont E, Dagenais F. LATE OUTCOMES OF PATIENTS WITH THORACIC ENDOVASCULAR AORTIC REPAIR (TEVAR) IN A LARGE SINGLE CENTER COHORT: ARE WE DOING THE RIGHT THERAPY? Can J Cardiol 2018. [DOI: 10.1016/j.cjca.2018.07.320] [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: 10/28/2022] Open
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Abstract
SummaryTo determine whether the long-term feeding of dietary fats affect platelet functions in man, platelet aggregation (to thrombin ADP, collagen, epinephrine) and clotting activity of platelet-rich plasma (PRP), platelet-poor plasma and of washed platelets, were studied in a mobile-laboratory in 44 healthy male farmers (40-45 years) from two French regions Var and Moselle, in relation to lipemia, glycemia, dietary nutriments, and platelet phospholipid composition. In the Moselle subjects, the platelet clotting activity of PRP and of washed platelets, the platelet aggregation to thrombin and ADP, were highly significantly (p <0.001) increased as compared to those of Var, but not the plasma cholesterol, which was identical in the two regions.In Moselle, the intake of total calories, total lipids and saturated fats was higher than in the Var.However, it was only with the saturated fat intake (mostly stearic acid) that the platelet clotting activity (p <0.01) and the platelet aggregation (p <0.001) were highly significantly correlated. The platelet clotting activity was also significantly (p <0.001) correlated with the fatty acid composition of the platelet phospholipid fractions phosphatidyl serine + phosphatidyl inositol.
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Affiliation(s)
- S Renaud
- The INSERM, Unité 63, Lyon-Bron, France and the Department of Nutrition, University of Montreal, Montreal, Canada
| | - E Dumont
- The INSERM, Unité 63, Lyon-Bron, France and the Department of Nutrition, University of Montreal, Montreal, Canada
| | - F Godsey
- The INSERM, Unité 63, Lyon-Bron, France and the Department of Nutrition, University of Montreal, Montreal, Canada
| | - A Suplisson
- The INSERM, Unité 63, Lyon-Bron, France and the Department of Nutrition, University of Montreal, Montreal, Canada
| | - C Thevenon
- The INSERM, Unité 63, Lyon-Bron, France and the Department of Nutrition, University of Montreal, Montreal, Canada
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Dumont E, De Bleye C, Cailletaud J, Sacré PY, Van Lerberghe PB, Rogister B, Rance GA, Aylott JW, Hubert P, Ziemons E. Development of a SERS strategy to overcome the nanoparticle stabilisation effect in serum-containing samples: Application to the quantification of dopamine in the culture medium of PC-12 cells. Talanta 2018; 186:8-16. [PMID: 29784422 DOI: 10.1016/j.talanta.2018.04.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/02/2018] [Accepted: 04/08/2018] [Indexed: 12/19/2022]
Abstract
The analysis of serum samples by surface-enhanced Raman spectroscopy (SERS) has gained ground over the last few years. However, the stabilisation of colloids by the proteins contained in these samples has restricted their use in common practice, unless antibodies or aptamers are used. Therefore, this work was dedicated to the development of a SERS methodology allowing the analysis of serum samples in a simple and easy-to-implement way. This approach was based on the pre-aggregation of the colloid with a salt solution. Gold nanoparticles (AuNPs) were used as the SERS substrate and, owing to its physiopathological importance, dopamine was chosen as a model to implement the SERS approach. The presence of this neurotransmitter could be determined in the concentration range 0.5-50 ppm (2.64-264 µM) in the culture medium of PC-12 cells, with a R2 of 0.9874, and at even lower concentrations (0.25 ppm, 1.32 µM) in another matrix containing fewer proteins. Moreover, the effect of calcium and potassium on the dopamine exocytosis from PC-12 cells was studied. Calcium was shown to have a predominant and dose-dependant effect. Finally, PC-12 cells were exposed to dexamethasone in order to increase their biosynthesis and release of dopamine. This increase was monitored with the developed SERS approach.
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Affiliation(s)
- E Dumont
- University of Liege (ULiege), CIRM, VibraSanté Hub, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium.
| | - C De Bleye
- University of Liege (ULiege), CIRM, VibraSanté Hub, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
| | - J Cailletaud
- University of Liege (ULiege), CIRM, VibraSanté Hub, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
| | - P-Y Sacré
- University of Liege (ULiege), CIRM, VibraSanté Hub, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
| | - P-B Van Lerberghe
- University of Liege (ULiege), GIGA-Neurosciences, Laboratory of Developmental Neurobiology, CHU, B36, B-4000 Liege, Belgium
| | - B Rogister
- University of Liege (ULiege), GIGA-Neurosciences, Laboratory of Nervous System Disorders and Therapy, CHU, B36, B-4000 Liege, Belgium; Department of Neurology, CHU of Liège, B-4000 Liege, Belgium
| | - G A Rance
- University of Nottingham, Nanoscale and Microscale Research Centre, University Park, NG7 2RD Nottingham, United Kingdom
| | - J W Aylott
- University of Nottingham, School of Pharmacy, Laboratory of Biophysics and Surface Analysis, University Park, NG7 2RD Nottingham, United Kingdom
| | - Ph Hubert
- University of Liege (ULiege), CIRM, VibraSanté Hub, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
| | - E Ziemons
- University of Liege (ULiege), CIRM, VibraSanté Hub, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, B36, B-4000 Liege, Belgium
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14
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Cailletaud J, De Bleye C, Dumont E, Sacré PY, Netchacovitch L, Gut Y, Boiret M, Ginot YM, Hubert P, Ziemons E. Critical review of surface-enhanced Raman spectroscopy applications in the pharmaceutical field. J Pharm Biomed Anal 2018; 147:458-472. [DOI: 10.1016/j.jpba.2017.06.056] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/19/2017] [Accepted: 06/23/2017] [Indexed: 11/30/2022]
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15
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Mohammadi S, Dagenais F, Dumont E, Voisine P, Kalavrouziotis D. WHAT IS THE PROSTHESIS TYPE OF CHOICE DURING MITRAL VALVE REPLACEMENT FOR SEVERE ISCHEMIC MITRAL REGURGITATION? Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.082] [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] Open
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16
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Lambert L, Azzi L, Désy F, Potter B, Racine N, Beauchemin J, Noiseux N, Asgar A, Daneault B, de Varennes B, Dumont E, Ibrahim R, Lamarche Y, Martucci G, Palisaitis D, Piazza N, Rodés-Cabau J, Afilalo J, Carrier M, de Guise M, Bogaty P. TRANSCATHETER AORTIC VALVE IMPLANTATION IN QUÉBEC: 4 YEARS OF COMPREHENSIVE EVALUATION AND RELATION TO QUALITY INDICATORS. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.273] [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] Open
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17
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Mohammadi S, Alkhalifa A, Dumont E, Doyle D, De Larochellière R, Paradis J, Rodés-Cabau J. TRANSCAROTID TRANSCATHETER AORTIC VALVE REPLACEMENT: WORK IN PROGRESS. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.173] [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] Open
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18
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Scangarella-Oman N, Hossain M, Dixon P, Ingraham K, Min S, Tiffany C, Perry C, Raychaudhuri A, Dumont E, Huang J, I I I EH, Miller L. P2.38 Microbiological analysis from a phase ii study in adults evaluating single doses of gepotidacin (GSK2140944) in the treatment of uncomplicated urogenital gonorrhoea caused by neisseria gonorrhoeae. Clin Sci (Lond) 2017. [DOI: 10.1136/sextrans-2017-053264.214] [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: 11/04/2022]
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19
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Grüber R, Aranda J, Bellili A, Tuñón I, Dumont E. Free energy profiles for two ubiquitous damaging agents: methylation and hydroxylation of guanine in B-DNA. Phys Chem Chem Phys 2017; 19:14695-14701. [PMID: 28537602 DOI: 10.1039/c6cp07966k] [Citation(s) in RCA: 2] [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: 11/21/2022]
Abstract
DNA methylation and hydroxylation are two ubiquitous reactions in DNA damage induction, yet insights are scarce concerning the free energy of activation within B-DNA. We resort to multiscale simulations to investigate the attack of a hydroxyl radical and of the primary diazonium onto a guanine embedded in a solvated dodecamer. Reaction free energy profiles characterize two strongly exergonic processes, yet allow unprecedented quantification of the barrier towards this damage reaction, not higher than 6 kcal mol-1 and sometimes inexistent, and of the exergonicities. In the case of the [G(C8)-OH]˙ intermediate, we challenge the functional dependence of such simulations: recently-proposed functionals, such as M06-2X and LC-BLYP, agree on a ∼4 kcal mol-1 barrier, whereas the hybrid GGA B3LYP functional predicts a barrier-less pathway. In the long term, multiscale approaches can help build up a unified panorama of DNA lesion induction. These results stress the importance of DFT/MM-MD simulations involving new functionals towards the sound modelling of biomolecule damage even in the ground state.
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Affiliation(s)
- R Grüber
- Univ. Lyon, Ens de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F-69342 Lyon, France.
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20
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Netchacovitch L, Thiry J, De Bleye C, Dumont E, Cailletaud J, Sacré PY, Evrard B, Hubert P, Ziemons E. Global approach for the validation of an in-line Raman spectroscopic method to determine the API content in real-time during a hot-melt extrusion process. Talanta 2017; 171:45-52. [PMID: 28551152 DOI: 10.1016/j.talanta.2017.04.060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 02/02/2017] [Revised: 04/20/2017] [Accepted: 04/25/2017] [Indexed: 10/19/2022]
Abstract
Since the Food and Drug Administration (FDA) published a guidance based on the Process Analytical Technology (PAT) approach, real-time analyses during manufacturing processes are in real expansion. In this study, in-line Raman spectroscopic analyses were performed during a Hot-Melt Extrusion (HME) process to determine the Active Pharmaceutical Ingredient (API) content in real-time. The method was validated based on a univariate and a multivariate approach and the analytical performances of the obtained models were compared. Moreover, on one hand, in-line data were correlated with the real API concentration present in the sample quantified by a previously validated off-line confocal Raman microspectroscopic method. On the other hand, in-line data were also treated in function of the concentration based on the weighing of the components in the prepared mixture. The importance of developing quantitative methods based on the use of a reference method was thus highlighted. The method was validated according to the total error approach fixing the acceptance limits at ±15% and the α risk at ±5%. This method reaches the requirements of the European Pharmacopeia norms for the uniformity of content of single-dose preparations. The validation proves that future results will be in the acceptance limits with a previously defined probability. Finally, the in-line validated method was compared with the off-line one to demonstrate its ability to be used in routine analyses.
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Affiliation(s)
- L Netchacovitch
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium.
| | - J Thiry
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Pharmaceutical Technology and Biopharmacy, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - C De Bleye
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - E Dumont
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - J Cailletaud
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - P-Y Sacré
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - B Evrard
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Pharmaceutical Technology and Biopharmacy, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - Ph Hubert
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - E Ziemons
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
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21
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Pons-Branchu E, Roy-Barman M, Jean-Soro L, Guillerme A, Branchu P, Fernandez M, Dumont E, Douville E, Michelot JL, Phillips AM. Urbanization impact on sulfur content of groundwater revealed by the study of urban speleothem-like deposits: Case study in Paris, France. Sci Total Environ 2017; 579:124-132. [PMID: 27866745 DOI: 10.1016/j.scitotenv.2016.10.234] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/22/2016] [Accepted: 10/25/2016] [Indexed: 06/06/2023]
Abstract
Speleothem-like deposits that develop underground in urban areas are an archive of the environmental impact of anthropic activities that has been little studied so far. In this paper, the sulfate content in shallow groundwater from northern Paris (France) is compared with the sulfur content in two 300-year-old urban carbonate deposits that grew in a historical underground aqueduct. The present-day waters of the aqueduct have very high sulfur and calcium contents, suggesting pollution from gypsum dissolution. However, geological gypsum levels are located below the water table. Sulfur content was measured by micro-X-ray fluorescence in these very S-rich carbonate deposits (0.5 to 1% of S). A twofold S increase during the second half of the 1800s was found in both samples. These dates correspond to two major periods of urbanization above the site. We discus three possible S sources: anthropic sources (industries, fertilizers…), volcanic eruptions and input within the water through gypsum brought for urbanization above the studied site (backfill with quarry waste) since the middle of the 19th century. For the younger second half of the studied section, S input from gypsum brought during urbanization was confirmed by the study of isotopic sulfur composition (δ34S=+15.2‰ at the top). For the oldest part, several sulfur peaks could be related to early industrial activity in Paris, that caused high local air pollution, as reported in historical archives but also to historical gypsum extraction. This study provides information on the origin and timing of the very high SO42- levels measured nowadays within the shallow groundwater, thus demonstrating the interest in using carbonate deposits in urban areas as a proxy for the history of urbanization or human activities and their impact on water bodies.
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Affiliation(s)
- E Pons-Branchu
- Laboratoire des Sciences du Climat et de l'Environnement LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France.
| | - M Roy-Barman
- Laboratoire des Sciences du Climat et de l'Environnement LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - L Jean-Soro
- LUNAM Université, IFSTTAR - centre de Nantes, Route de Bouaye CS4, 44344 Bouguenais, France
| | - A Guillerme
- CNAM: HT2S, EA 3716, 2 rue Conté, 75003 Paris, France
| | - P Branchu
- CEREMA, 12 Rue Teisserenc de Bort, 78197 Trappes-en-Yvelines Cedex, France
| | - M Fernandez
- CNAM: HT2S, EA 3716, 2 rue Conté, 75003 Paris, France
| | - E Dumont
- CEREMA Rue de l'Egalité Prolongée - BP 134, 93352 Le Bourget Cedex 319, France
| | - E Douville
- Laboratoire des Sciences du Climat et de l'Environnement LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - J L Michelot
- GEOPS Univ. Paris-Sud, CNRS, Université Paris-Saclay, Bâtiment 504, Rue du Belvédère, 91405 Orsay Cedex, France
| | - A M Phillips
- GNS Science, National Isotope Centre, Lower Hutt, New Zealand
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22
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De Bleye C, Dumont E, Dispas A, Hubert C, Sacré PY, Netchacovitch L, De Muyt B, Kevers C, Dommes J, Hubert P, Ziemons E. Monitoring of anatabine release by methyl jasmonate elicited BY-2 cells using surface-enhanced Raman scattering. Talanta 2016; 160:754-760. [PMID: 27591672 DOI: 10.1016/j.talanta.2016.08.027] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/04/2016] [Accepted: 08/05/2016] [Indexed: 11/24/2022]
Abstract
A new application of surface-enhanced Raman scattering (SERS) in the field of plant material analysis is proposed in this study. The aim was to monitor the release of anatabine by methyl jasmonate (MeJa) elicited Bright Yellow-2 (BY-2) cells. Gold nanoparticles (AuNps) were used as SERS substrate. The first step was to study the SERS activity of anatabine in a complex matrix comprising the culture medium and BY-2 cells. The second step was the calibration. This one was successfully performed directly in the culture medium in order to take into account the matrix effect, by spiking the medium with different concentrations of anatabine, leading to solutions ranging from 250 to 5000µgL(-1). A univariate analysis was performed, the intensity of a band situated at 1028cm(-1), related to anatabine, was plotted against the anatabine concentration. A linear relationship was observed with a R(2) of 0.9951. During the monitoring study, after the MeJa elicitation, samples were collected from the culture medium containing BY-2 cells at 0, 24h, 48h, 72h and 96h and were analysed using SERS. Finally, the amount of anatabine released in the culture medium was determined using the response function, reaching a plateau after 72h of 82µg of anatabine released/g of fresh weight (FW) MeJa elicited BY-2 cells.
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Affiliation(s)
- C De Bleye
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium.
| | - E Dumont
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium
| | - A Dispas
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium
| | - C Hubert
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium
| | - P-Y Sacré
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium
| | - L Netchacovitch
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium
| | - B De Muyt
- University of Liege (ULg), CEDEVIT (ASBL), Plant and Biology Institute, Plant Molecular Biology and Biotechnology Unit, Sart-Tilman, Quartier Vallée 1, Chemin de la Vallée 4, B22, B-4000 Liege, Belgium
| | - C Kevers
- University of Liege (ULg), CEDEVIT (ASBL), Plant and Biology Institute, Plant Molecular Biology and Biotechnology Unit, Sart-Tilman, Quartier Vallée 1, Chemin de la Vallée 4, B22, B-4000 Liege, Belgium
| | - J Dommes
- University of Liege (ULg), CEDEVIT (ASBL), Plant and Biology Institute, Plant Molecular Biology and Biotechnology Unit, Sart-Tilman, Quartier Vallée 1, Chemin de la Vallée 4, B22, B-4000 Liege, Belgium
| | - Ph Hubert
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium
| | - E Ziemons
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B36, B-4000 Liege, Belgium
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23
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Moisset X, Sia MA, Pereira B, Taithe F, Dumont E, Bernard L, Clavelou P. Fixed 50:50 mixture of nitrous oxide and oxygen to reduce lumbar-puncture-induced pain: a randomized controlled trial. Eur J Neurol 2016; 24:46-52. [PMID: 27666149 DOI: 10.1111/ene.13127] [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: 05/20/2016] [Accepted: 08/09/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND PURPOSE Lumbar puncture (LP) has been frequently performed for more than a century. This procedure is still stressful and often painful. The aim of the study was to evaluate the efficacy of a fixed 50% nitrous oxide-oxygen mixture compared to placebo to reduce immediate procedural pain and anxiety during LP. METHODS A randomized controlled trial was conducted involving adults who needed a cerebrospinal fluid analysis. Patients were randomly assigned to inhale either a fixed 50% nitrous oxide-oxygen mixture (50% N2 O-O2 ) or medical air (22% O2 -78% N2 ). Cutaneous application of a eutectic mixture of local anaesthetics was systematically done and all LPs were performed with pencil point 25G needles (20G introducer needle). The primary end-point was the maximal pain level felt by the patient during the procedure, the maximal anxiety level being a secondary outcome, both measured using a numerical rating scale (0-10). RESULTS A total of 66 consecutive patients were randomized. The analysis was intention to treat. The maximal pain was 4.9 ± 2.7 for the 33 patients receiving air and 2.7 ± 2.7 for the 33 receiving 50% N2 O-O2 (P = 0.002). Similarly, the maximal LP-induced anxiety was 4.5 ± 3.1 vs. 2.6 ± 2.6 (P = 0.009), respectively. The number needed to treat to avoid one patient undergoing significant pain (pain score ≥ 4/10) was 2.75. Body mass index >25 kg/m2 was significantly associated with higher pain intensity (P = 0.03). No serious adverse events were attributable to 50% N2 O-O2 inhalation. CONCLUSIONS Inhalation of a fixed 50% N2 O-O2 mixture is efficient to reduce LP-induced pain and anxiety.
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Affiliation(s)
- X Moisset
- Service de Neurologie, CHU Clermont-Ferrand, Clermont-Ferrand, France.,Clermont-Ferrand and Inserm U1107, Clermont Université, Université d'Auvergne, Neuro-Dol, Clermont-Ferrand, France
| | - M A Sia
- Service de Neurologie, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - B Pereira
- Biostatistics Unit, Délégation Recherche Clinique et Innovation, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - F Taithe
- Service de Neurologie, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - E Dumont
- Service de Neurologie, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - L Bernard
- Pôle pharmacie, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - P Clavelou
- Service de Neurologie, CHU Clermont-Ferrand, Clermont-Ferrand, France.,Clermont-Ferrand and Inserm U1107, Clermont Université, Université d'Auvergne, Neuro-Dol, Clermont-Ferrand, France
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24
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Netchacovitch L, Thiry J, De Bleye C, Dumont E, Dispas A, Hubert C, Krier F, Sacré PY, Evrard B, Hubert P, Ziemons E. A simple calibration approach based on film-casting for confocal Raman microscopy to support the development of a hot-melt extrusion process. Talanta 2016; 154:392-9. [PMID: 27154691 DOI: 10.1016/j.talanta.2016.03.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/21/2016] [Accepted: 03/25/2016] [Indexed: 11/28/2022]
Abstract
When developing a new formulation, the development, calibration and validation steps of analytical methods based on vibrational spectroscopy are time-consuming. For each new formulation, real samples must be produced and a "reference method" must be used in order to determine the Active Pharmaceutical Ingredient (API) content of each sample. To circumvent this issue, the paper presents a simple approach based on the film-casting technique used as a calibration tool in the framework of hot-melt extrusion process. Confocal Raman microscopic method was successfully validated for the determination of itraconazole content in film-casting samples. Then, hot-melt extrusion was carried out to produce real samples in order to confront the results obtained with confocal Raman microscopy and Ultra High Performance Liquid Chromatography (UHPLC). The agreement between both methods was demonstrated using a comparison study based on the Bland and Altman's plot.
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Affiliation(s)
- L Netchacovitch
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium.
| | - J Thiry
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Pharmaceutical Technology and Biopharmacy, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - C De Bleye
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - E Dumont
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - A Dispas
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - C Hubert
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - F Krier
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Pharmaceutical Technology and Biopharmacy, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - P-Y Sacré
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - B Evrard
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Pharmaceutical Technology and Biopharmacy, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - Ph Hubert
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
| | - E Ziemons
- University of Liege (ULg), CIRM, Department of Pharmacy, Laboratory of Analytical Chemistry, CHU, Quartier Hôpital, Avenue Hippocrate 15, B-4000 Liege, Belgium
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25
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Gagné-Loranger M, Dumont E, Voisine P, Mohammadi S, Dagenais F. NATURAL HISTORY OF 40-50MM ROOT/ASCENDING AORTIC ANEURYSMS IN THE CURRENT ERA OF DEDICATED THORACIC AORTIC CLINICS. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.462] [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: 10/22/2022] Open
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26
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Mohammadi S, Marzouk M, Voisine P, Dumont E, Charbonneau E, Baillot R, Dagenais F, Kalavrouziotis D. DOES THE USE OF A FREE INTERNAL MAMMARY ARTERY GRAFT TO BYPASS THE LEFT ANTERIOR DESCENDING ARTERY COMPROMISE LONG-TERM SURVIVAL? AN 18-YEAR FOLLOW-UP USING PROPENSITY SCORES. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.345] [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] Open
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27
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Mohammadi S, Dumont E, Rodes-Cabau J, Voisine P, Doyle D, Charbonneau E, Dagenais F, Kalavrouziotis D. RESULTS OF SURGICAL AORTIC VALVE REPLACEMENT IN OCTOGENARIANS TURNED DOWN FOR TRANS-CATHETER AORTIC VALVE REPLACEMENT BY THE MULTIDISCIPLINARY HEART TEAM. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.382] [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: 11/26/2022] Open
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Le Roux E, Dumont E, Kalavrouziotis D, Doyle D, Paradis J, De Larochelliere R, Rodes-Cabau J, Mohammadi S. MID-TERM RESULTS OF TRANS-CATHETER AORTIC VALVE-IN-VALVE IMPLANTATION IN DEGENERATED AORTIC STENTLESS BIOPROSTHESES. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.371] [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: 11/24/2022] Open
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Gagné-Loranger M, Dumont E, p Voisine, Mohammadi S, Dagenais F. OUTCOMES OF TEVAR FOR ACUTE TRAUMATIC RUPTURE; RATIONAL AND IMPLICATIONS IN DEVELOPING SPECIFIC IMAGING GUIDELINES FOR FOLLOW-UP. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.447] [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: 10/22/2022] Open
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Lambert L, Sas G, Dragieva N, Daneault B, Généreux P, Noiseux N, Lamarche Y, Martucci G, Ibrahim R, de Varennes B, Dumont E, Rodés-Cabau J, Carrier M, Spaziano M, Morin J, Bogaty P. USE AND OUTCOMES OF TRANSCATHETER AORTIC VALVE IMPLANTATION: Results OF A QUÉBEC-WIDE FIELD EVALUATION AND COMPARISON WITH THE TVT REGISTRY. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.417] [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: 11/24/2022] Open
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Dery J, Dagenais F, Mohammadi S, Kalavrouziotis D, Garcia-Labbé D, Jacques F, Baillot R, Doyle D, Perron J, Mathieu P, Charbonneau E, Dumont E, Metras J, Voisine P. RISK OF BLEEDING COMPLICATIONS IN PATIENTS TREATED WITH TICAGRELOR UNDERGOING URGENT CORONARY ARTERY BYPASS GRAFTING SURGERY: A SINGLE CENTER EXPERIENCE. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.595] [Citation(s) in RCA: 2] [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: 11/15/2022] Open
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Dagenais F, Mohammadi S, Dumont E, Kalavrouziotis D, Voisine P. EARLY AND LATE OUTCOMES OF PATIENTS OPERATED UNDER CARDIOPULMONARY BYPASS ACCORDING TO THE PREOPERATIVE RENAL FUNCTION LEVEL: Results OF A LARGE INSTITUTIONAL STUDY. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.407] [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: 10/24/2022] Open
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Dumont E, Hamon L, Lagadec S, Landrain P, Landrain B, Andrès Y. NH₃ biofiltration of piggery air. J Environ Manage 2014; 140:26-32. [PMID: 24726962 DOI: 10.1016/j.jenvman.2014.03.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/05/2014] [Accepted: 03/19/2014] [Indexed: 06/03/2023]
Abstract
An aboveground pilot-scale biofilter filled with wood chips was tested to treat ammonia emissions from a piggery located in Brittany (France). Two long-term tests ("summer" and "autumn" experiments) were carried out to improve biofilter applications for agriculture. The influence of climatic conditions on biofilter performance was taken into account. During summer 2012, the biofilter was operated for 74 days at different empty bed residence times (EBRTs) from 6 to 15 s. Inlet NH3 concentrations were relatively constant (around 15 mg m(-3)). Significant NH3 reductions were achieved at EBRT = 12 s (removal efficiencies, RE, ranged between 90 and 100% for loading rates, LR, of around 4 g m(-3) h(-1)). At a lower EBRT (6 s), RE dropped to roughly 30-50%. This was due to the dramatic increase in the loading rate (LR up to 12 g m(-3) h(-1)) but the results showed that the change in atmospheric conditions (temperature and relative humidity) also had a significant influence on biofilter performance. It was evidenced that the use of a humidifier upstream of the biofilter must be taken into account for large-scale biofilter design, but only for specific conditions (the spraying of the biofilter having to be carried out exceptionally). During autumn 2012, the biofilter was operated for 116 days at EBRT = 12 s. RE were around 80% for LR of around 3 g m(-3) h(-1). In such autumnal atmospheric conditions, a demister system should be installed upstream of the biofilter in order to avoid water accumulation in the bed material. Although biofiltration was suitable for NH3 treatment of piggery air, the need to control accurately the medium moisture content implies that biofilters would not be easily managed by a pig farmer.
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Affiliation(s)
- E Dumont
- L'UNAM Université, École des Mines de Nantes, CNRS, GEPEA, UMR 6144, La Chantrerie, 4 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France.
| | - L Hamon
- L'UNAM Université, École des Mines de Nantes, CNRS, GEPEA, UMR 6144, La Chantrerie, 4 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France
| | - S Lagadec
- Chambre d'Agriculture de Bretagne, rue Maurice Le Lannou CS 74223, 35042 Rennes Cedex, France
| | - P Landrain
- Chambre d'Agriculture de Bretagne, rue Maurice Le Lannou CS 74223, 35042 Rennes Cedex, France
| | - B Landrain
- Chambre d'Agriculture de Bretagne, rue Maurice Le Lannou CS 74223, 35042 Rennes Cedex, France
| | - Y Andrès
- L'UNAM Université, École des Mines de Nantes, CNRS, GEPEA, UMR 6144, La Chantrerie, 4 rue Alfred Kastler, B.P. 20722, 44307 Nantes Cedex 3, France
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De Bleye C, Sacré PY, Dumont E, Netchacovitch L, Chavez PF, Piel G, Lebrun P, Hubert P, Ziemons E. Development of a quantitative approach using surface-enhanced Raman chemical imaging: First step for the determination of an impurity in a pharmaceutical model. J Pharm Biomed Anal 2014; 90:111-8. [DOI: 10.1016/j.jpba.2013.11.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 11/20/2013] [Accepted: 11/22/2013] [Indexed: 11/16/2022]
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De Bleye C, Dumont E, Rozet E, Sacré PY, Chavez PF, Netchacovitch L, Piel G, Hubert P, Ziemons E. Determination of 4-aminophenol in a pharmaceutical formulation using surface enhanced Raman scattering: From development to method validation. Talanta 2013; 116:899-905. [DOI: 10.1016/j.talanta.2013.07.084] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 07/26/2013] [Accepted: 07/31/2013] [Indexed: 11/28/2022]
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Nombela-Franco L, Barbosa Ribeiro H, Allende R, Urena M, Doyle D, Dumont E, Delarochellière R, Rodés-Cabau J. Role of balloon postdilation following trancatheter aortic valve implantation. Minerva Cardioangiol 2013; 61:499-512. [PMID: 24096245] [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: 06/02/2023]
Abstract
Paravalvular aortic regurgitation (AR) is a frequent complication following transcatheter aortic valve implantation (TAVI) with an incidence of mild to moderate AR almost systematically higher than 30%. Moreover, several studies have shown that AR has a negative impact on short and mid-term mortality. Balloon postdilation has been proposed as an initial periprocedural option for patients with paravalvular AR to obtain a better expansion of the stent valve frame and potentially reduce the severity of the leak. The aim of this review is to discuss the current available literature on balloon postdilation as a treatment of paravalvular AR after TAVI, its impact on clinical events and future perspectives.
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Payne A, Merrill R, Minalga E, Vyas U, de Bever J, Todd N, Hadley R, Dumont E, Neumayer L, Christensen D, Roemer R, Parker D. Design and characterization of a laterally mounted phased-array transducer breast-specific MRgHIFU device with integrated 11-channel receiver array. Med Phys 2013; 39:1552-60. [PMID: 22380387 DOI: 10.1118/1.3685576] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE This work presents the design and preliminary evaluation of a new laterally mounted phased-array MRI-guided high-intensity focused ultrasound (MRgHIFU) system with an integrated 11-channel phased-array radio frequency (RF) coil intended for breast cancer treatment. The design goals for the system included the ability to treat the majority of tumor locations, to increase the MR image's signal-to-noise ratio (SNR) throughout the treatment volume and to provide adequate comfort for the patient. METHODS In order to treat the majority of the breast volume, the device was designed such that the treated breast is suspended in a 17-cm diameter treatment cylinder. A laterally shooting 1-MHz, 256-element phased-array ultrasound transducer with flexible positioning is mounted outside the treatment cylinder. This configuration achieves a reduced water volume to minimize RF coil loading effects, to position the coils closer to the breast for increased signal sensitivity, and to reduce the MR image noise associated with using water as the coupling fluid. This design uses an 11-channel phased-array RF coil that is placed on the outer surface of the cylinder surrounding the breast. Mechanical positioning of the transducer and electronic steering of the focal spot enable placement of the ultrasound focus at arbitrary locations throughout the suspended breast. The treatment platform allows the patient to lie prone in a face-down position. The system was tested for comfort with 18 normal volunteers and SNR capabilities in one normal volunteer and for heating accuracy and stability in homogeneous phantom and inhomogeneous ex vivo porcine tissue. RESULTS There was a 61% increase in mean relative SNR achieved in a homogeneous phantom using the 11-channel RF coil when compared to using only a single-loop coil around the chest wall. The repeatability of the system's energy delivery in a single location was excellent, with less than 3% variability between repeated temperature measurements at the same location. The execution of a continuously sonicated, predefined 48-point, 8-min trajectory path resulted in an ablation volume of 8.17 cm(3), with one standard deviation of 0.35 cm(3) between inhomogeneous ex vivo tissue samples. Comfort testing resulted in negligible side effects for all volunteers. CONCLUSIONS The initial results suggest that this new device will potentially be suitable for MRgHIFU treatment in a wide range of breast sizes and tumor locations.
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Affiliation(s)
- A Payne
- Utah Center for Advanced Imaging Research, University of Utah, Salt Lake City, UT 84108, USA.
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Dupont C, Patel C, Ravanat JL, Dumont E. Addressing the competitive formation of tandem DNA lesions by a nucleobase peroxyl radical: a DFT-D screening. Org Biomol Chem 2013; 11:3038-45. [DOI: 10.1039/c3ob40280k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Romero Hernandez A, Rodríguez Susa M, Andrès Y, Dumont E. Steady- and transient-state H2S biofiltration using expanded schist as packing material. N Biotechnol 2013; 30:210-8. [DOI: 10.1016/j.nbt.2012.07.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 06/25/2012] [Accepted: 07/13/2012] [Indexed: 10/28/2022]
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Freeman M, Rodés-Cabau J, Alcázar MU, DeLarochelliere R, Dumont E, Masson J, Willson A, Binder R, Toggweiler S, Leipsic J, Wood D, Webb J. 408 First-in-Man Transfemoral Transcatheter Aortic Valve Replacement With the 29mm Edwards SAPIEN XT Valve. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.384] [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] Open
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Binder R, Rodes-Cabau J, Mok M, Wood D, Larochellière RD, Dumont E, Toggweiler S, Leipsic J, Freeman M, Willson A, Webb J. 689 Transcatheter Aortic Valve Replacement With a Next Generation Balloon Expandable Percutaneous Heart Valve. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.623] [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] Open
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Dagenais F, Dumont E, Doyle D, Mohammadi S, Voisine P. 700 Reassessment of Open Isolated Aortic Valve Replacement Outcomes in the Era of Transaortic Valve Implantation. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.634] [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] Open
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Dagenais F, Albert G, Voisine P, Mohammadi S, Dumont E. 143 A Decade of Thoracic Stent-Grafting: Lessons Learned. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.148] [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: 11/26/2022] Open
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Le Ven F, Freeman M, Webb J, Clavel M, Wheeler M, Dumont E, Thompson C, DeLarochelière R, Moss R, Ye J, Doyle D, Cheung A, Rodès-Cabau J, Pibarot P. 586 Impact of Baseline LV Ejection Fraction and Transvalvular Gradient on the Outcome of High Risk Patients Undergoing Transcatheter Aortic Valve Replacement. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.532] [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] Open
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Mohammadi S, Dagenais F, Dumont E, Charbonneau E, Mathieu P, Doyle D, Baillot R, Perron J, Voisine P. 094 Lessons learned from 2120 bilateral internal mammary gratings: Early outcomes and long-term survival. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.258] [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: 10/16/2022] Open
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Sponga S, Cabau JR, Doyle D, De Larochellière R, Bagur R, Dumont E. 108 Transcatheter aortic valve implantation in patients with severe aortic stenosis and calcified ascending aorta. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.272] [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] Open
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Sponga S, Sénéchal M, Nalli C, Cantin B, Voisine P, Dagenais F, Dumont E, Leblanc M, Doyle D, Charbonneau E, Charbonneau E. 624 Extra-corporeal membrane oxygenation support for early graft failure after heart transplantation. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.520] [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: 10/16/2022] Open
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Maminirina P, Voisine P, Dumont E, Dagenais F. 104 Aortic root management in patients with bicuspid aortic valve disease and aneurysm of the ascending aorta: A comparative analysis of 3 strategies. Can J Cardiol 2011. [DOI: 10.1016/j.cjca.2011.07.268] [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: 10/16/2022] Open
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Gurvitch R, Willson A, Rodes-Cabau J, Bagur R, Toggweiler S, Wood D, Cheung A, Ye J, Lee M, Dumont E, Webb J. Transcatheter Aortic Valve Implantation—Multicentre Study Evaluating the Clinical Outcomes of Patients with PARTNER Trial Exclusions. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.378] [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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Clavel MA, Webb JG, Rodés-Cabau J, Masson JB, Dumont E, De Larochellière R, Doyle D, Bergeron S, Baumgartner H, Burwash IG, Dumesnil JG, Mundigler G, Moss R, Kempny A, Bagur R, Bergler-Klein J, Gurvitch R, Mathieu P, Pibarot P. Comparison between transcatheter and surgical prosthetic valve implantation in patients with severe aortic stenosis and reduced left ventricular ejection fraction. Circulation 2010; 122:1928-36. [PMID: 20975002 DOI: 10.1161/circulationaha.109.929893] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Patients with severe aortic stenosis and reduced left ventricular ejection fraction (LVEF) have a poor prognosis with conservative therapy but a high operative mortality when treated surgically. Recently, transcatheter aortic valve implantation (TAVI) has emerged as an alternative to surgical aortic valve replacement (SAVR) for patients considered at high or prohibitive operative risk. The objective of this study was to compare TAVI and SAVR with respect to postoperative recovery of LVEF in patients with severe aortic stenosis and reduced LV systolic function. METHODS AND RESULTS Echocardiographic data were prospectively collected before and after the procedure in 200 patients undergoing SAVR and 83 patients undergoing TAVI for severe aortic stenosis (aortic valve area ≤1 cm(2)) with reduced LV systolic function (LVEF ≤50%). TAVI patients were significantly older (81±8 versus 70±10 years; P<0.0001) and had more comorbidities compared with SAVR patients. Despite similar baseline LVEF (34±11% versus 34±10%), TAVI patients had better recovery of LVEF compared with SAVR patients (ΔLVEF, 14±15% versus 7±11%; P=0.005). At the 1-year follow-up, 58% of TAVI patients had a normalization of LVEF (>50%) as opposed to 20% in the SAVR group. On multivariable analysis, female gender (P=0.004), lower LVEF at baseline (P=0.005), absence of atrial fibrillation (P=0.01), TAVI (P=0.007), and larger increase in aortic valve area after the procedure (P=0.01) were independently associated with better recovery of LVEF. CONCLUSION In patients with severe aortic stenosis and depressed LV systolic function, TAVI is associated with better LVEF recovery compared with SAVR. TAVI may provide an interesting alternative to SAVR in patients with depressed LV systolic function considered at high surgical risk.
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Affiliation(s)
- M A Clavel
- Institut Universitaire de Cardiologie et de Pneumologie de Québec/Québec Heart and Lung Institute, Laval University, Québec, Canada
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