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Gauthier M, Kim JB, Curry CB, Aurand B, Gamboa EJ, Göde S, Goyon C, Hazi A, Kerr S, Pak A, Propp A, Ramakrishna B, Ruby J, Willi O, Williams GJ, Rödel C, Glenzer SH. High-intensity laser-accelerated ion beam produced from cryogenic micro-jet target. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:11D827. [PMID: 27910336 DOI: 10.1063/1.4961270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report on the successful operation of a newly developed cryogenic jet target at high intensity laser-irradiation. Using the frequency-doubled Titan short pulse laser system at Jupiter Laser Facility, Lawrence Livermore National Laboratory, we demonstrate the generation of a pure proton beam a with maximum energy of 2 MeV. Furthermore, we record a quasi-monoenergetic peak at 1.1 MeV in the proton spectrum emitted in the laser forward direction suggesting an alternative acceleration mechanism. Using a solid-density mixed hydrogen-deuterium target, we are also able to produce pure proton-deuteron ion beams. With its high purity, limited size, near-critical density, and high-repetition rate capability, this target is promising for future applications.
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Fletcher LB, Zastrau U, Galtier E, Gamboa EJ, Goede S, Schumaker W, Ravasio A, Gauthier M, MacDonald MJ, Chen Z, Granados E, Lee HJ, Fry A, Kim JB, Roedel C, Mishra R, Pelka A, Kraus D, Barbrel B, Döppner T, Glenzer SH. High resolution x-ray Thomson scattering measurements from cryogenic hydrogen jets using the linac coherent light source. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:11E524. [PMID: 27910564 DOI: 10.1063/1.4959792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present the first spectrally resolved measurements of x-rays scattered from cryogenic hydrogen jets in the single photon counting limit. The 120 Hz capabilities of the LCLS, together with a novel hydrogen jet design [J. B. Kim et al., Rev. Sci. Instrum. (these proceedings)], allow for the ability to record a near background free spectrum. Such high-dynamic-range x-ray scattering measurements enable a platform to study ultra-fast, laser-driven, heating dynamics of hydrogen plasmas. This measurement has been achieved using two highly annealed pyrolytic graphite crystal spectrometers to spectrally resolve 5.5 keV x-rays elastically and inelastically scattered from cryogenic hydrogen and focused on Cornell-SLAC pixel array detectors [S. Herrmann et al., Nucl. Instrum. Methods Phys. Res., Sect. A 718, 550 (2013)].
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Nielsen EE, Morgan JAT, Maher SL, Edson J, Gauthier M, Pepperell J, Holmes BJ, Bennett MB, Ovenden JR. Extracting DNA from 'jaws': high yield and quality from archived tiger shark (Galeocerdo cuvier) skeletal material. Mol Ecol Resour 2016; 17:431-442. [PMID: 27508520 DOI: 10.1111/1755-0998.12580] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/10/2016] [Accepted: 06/23/2016] [Indexed: 11/30/2022]
Abstract
Archived specimens are highly valuable sources of DNA for retrospective genetic/genomic analysis. However, often limited effort has been made to evaluate and optimize extraction methods, which may be crucial for downstream applications. Here, we assessed and optimized the usefulness of abundant archived skeletal material from sharks as a source of DNA for temporal genomic studies. Six different methods for DNA extraction, encompassing two different commercial kits and three different protocols, were applied to material, so-called bio-swarf, from contemporary and archived jaws and vertebrae of tiger sharks (Galeocerdo cuvier). Protocols were compared for DNA yield and quality using a qPCR approach. For jaw swarf, all methods provided relatively high DNA yield and quality, while large differences in yield between protocols were observed for vertebrae. Similar results were obtained from samples of white shark (Carcharodon carcharias). Application of the optimized methods to 38 museum and private angler trophy specimens dating back to 1912 yielded sufficient DNA for downstream genomic analysis for 68% of the samples. No clear relationships between age of samples, DNA quality and quantity were observed, likely reflecting different preparation and storage methods for the trophies. Trial sequencing of DNA capture genomic libraries using 20 000 baits revealed that a significant proportion of captured sequences were derived from tiger sharks. This study demonstrates that archived shark jaws and vertebrae are potential high-yield sources of DNA for genomic-scale analysis. It also highlights that even for similar tissue types, a careful evaluation of extraction protocols can vastly improve DNA yield.
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Chen SN, Gauthier M, Bazalova-Carter M, Bolanos S, Glenzer S, Riquier R, Revet G, Antici P, Morabito A, Propp A, Starodubtsev M, Fuchs J. Absolute dosimetric characterization of Gafchromic EBT3 and HDv2 films using commercial flat-bed scanners and evaluation of the scanner response function variability. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:073301. [PMID: 27475550 DOI: 10.1063/1.4954921] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 06/07/2016] [Indexed: 06/06/2023]
Abstract
Radiochromic films (RCF) are commonly used in dosimetry for a wide range of radiation sources (electrons, protons, and photons) for medical, industrial, and scientific applications. They are multi-layered, which includes plastic substrate layers and sensitive layers that incorporate a radiation-sensitive dye. Quantitative dose can be retrieved by digitizing the film, provided that a prior calibration exists. Here, to calibrate the newly developed EBT3 and HDv2 RCFs from Gafchromic™, we used the Stanford Medical LINAC to deposit in the films various doses of 10 MeV photons, and by scanning the films using three independent EPSON Precision 2450 scanners, three independent EPSON V750 scanners, and two independent EPSON 11000XL scanners. The films were scanned in separate RGB channels, as well as in black and white, and film orientation was varied. We found that the green channel of the RGB scan and the grayscale channel are in fact quite consistent over the different models of the scanner, although this comes at the cost of a reduction in sensitivity (by a factor ∼2.5 compared to the red channel). To allow any user to extend the absolute calibration reported here to any other scanner, we furthermore provide a calibration curve of the EPSON 2450 scanner based on absolutely calibrated, commercially available, optical density filters.
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Wang H, Gauthier M, Kelly JR, Miller RJ, Xu M, O'Brien WD, Cheng J. Targeted Ultrasound-Assisted Cancer-Selective Chemical Labeling and Subsequent Cancer Imaging using Click Chemistry. Angew Chem Int Ed Engl 2016; 55:5452-6. [PMID: 27010510 PMCID: PMC4918225 DOI: 10.1002/anie.201509601] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 01/29/2016] [Indexed: 01/01/2023]
Abstract
Metabolic sugar labeling followed by the use of reagent-free click chemistry is an established technique for in vitro cell targeting. However, selective metabolic labeling of the target tissues in vivo remains a challenge to overcome, which has prohibited the use of this technique for targeted in vivo applications. Herein, we report the use of targeted ultrasound pulses to induce the release of tetraacetyl N-azidoacetylmannosamine (Ac4 ManAz) from microbubbles (MBs) and its metabolic expression in the cancer area. Ac4 ManAz-loaded MBs showed great stability under physiological conditions, but rapidly collapsed in the presence of tumor-localized ultrasound pulses. The released Ac4 ManAz from MBs was able to label 4T1 tumor cells with azido groups and significantly improved the tumor accumulation of dibenzocyclooctyne (DBCO)-Cy5 by subsequent click chemistry. We demonstrated for the first time that Ac4 ManAz-loaded MBs coupled with the use of targeted ultrasound could be a simple but powerful tool for in vivo cancer-selective labeling and targeted cancer therapies.
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Desmas I, Burton JH, Post G, Kristal O, Gauthier M, Borrego JF, Di Bella A, Lara-Garcia A. Clinical presentation, treatment and outcome in 31 dogs with presumed primary colorectal lymphoma (2001-2013). Vet Comp Oncol 2016; 15:504-517. [DOI: 10.1111/vco.12194] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 09/28/2015] [Accepted: 10/13/2015] [Indexed: 12/16/2022]
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Wang H, Gauthier M, Kelly JR, Miller RJ, Xu M, O'Brien WD, Cheng J. Targeted Ultrasound‐Assisted Cancer‐Selective Chemical Labeling and Subsequent Cancer Imaging using Click Chemistry. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509601] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Palmaro A, Gauthier M, Despas F, Lapeyre-Mestre M. Reconstituer les lignes de traitement reçues en onco-hématologie à partir des données du Sniiram et du PMSI : application à l’étude des cycles de chimiothérapie dans le myélome multiple. Rev Epidemiol Sante Publique 2016. [DOI: 10.1016/j.respe.2016.01.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Vrlinic T, Buron CC, Lakard S, Husson J, Rougeot P, Gauthier M, Lakard B. Evaluation of Adhesion Forces for the Manipulation of Micro-Objects in Submerged Environment through Deposition of pH Responsive Polyelectrolyte Layers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:102-111. [PMID: 26632761 DOI: 10.1021/acs.langmuir.5b03575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Optimization of surface treatment for reversible adhesion of micro-objects in liquid environment for the need in microassembly processes is presented. A spherical borosilicate probe and planar oxidized silicon wafer substrates were modified by deposition of pH sensitive polyelectrolyte films through layer-by-layer technique. Branched polyethylenimine (b-PEI) and poly(sodium styrenesulfonate) (PSS) were deposited in alternating manner on surfaces, and the influence of polyelectrolyte concentration, pH of deposition, and number of layers on the adhesion were successively examined. The multilayer buildup was followed by optical reflectometry (OR) and dissipative quartz crystal microbalance (QCM-D). The adhesion forces were monitored in aqueous environment at variable pH values by colloidal probe AFM microscopy. The thermodynamic work of adhesion was derived from the pull-off forces by using the Johnson-Kendall-Roberts (JKR) model and compared to the work of adhesion determined from contact angle measurements. It was found out that they correlate well, however, the values accessed from JKR model were underestimated, which was attributed mainly to the effect of surface roughness. Obtained results have demonstrated that it is possible to achieve repeatable reversible adhesion with the change of pH of submerged environment by appropriately tailoring the surface properties and therefore the prevailing surface forces.
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Natale R, Doyen J, Courdi A, Gérard JP, Leysalle A, Dejean C, Feuillade J, Gauthier M, Bénézéry K. Efficacité et toxicité de la radiothérapie de contact par photons de 50kV des carcinomes palpébraux. Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mirjolet C, Charon-barra C, Arbez-gindre F, Gauthier M, Maingon P, Barthod Z, Leroux A, Merlin J, Peiffert D, Dalban C, Ladoire S, Bosset J, Crehange G. 2009 Tumoral lymphocyte immune response to preoperative radiotherapy in locally advanced rectal cancer as a prognostic factor for survival: The LYMPHOREC study. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30934-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Gauthier M, Yin Q, Cheng J, O'Brien WD. Design of Albumin-Coated Microbubbles Loaded With Polylactide Nanoparticles. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2015; 34:1363-72. [PMID: 26206822 PMCID: PMC4536807 DOI: 10.7863/ultra.34.8.1363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 11/19/2014] [Indexed: 03/24/2024]
Abstract
OBJECTIVES A protocol was designed to produce albumin-coated microbubbles (MBs) loaded with functionalized polylactide (PLA) nanoparticles (NPs) for future drug delivery studies. METHODS Microbubbles resulted from the sonication of 5% bovine serum albumin and 15% dextrose solution. Functionalized NPs were produced by mixing fluorescent PLA and PLA-polyethylene glycol-carboxylate conjugates. Nanoparticle-loaded MBs resulted from the covalent conjugation of functionalized NPs and MBs. Three NP/MB volume ratios (1/1, 1/10, and 1/100) and unloaded MBs were produced and compared. Statistical evaluations were based on quantitative analysis of 3 parameters at 4 time points (1, 4, 5, and 6 days post MB fabrication): MB diameter using a circle detection routine based on the Hough transform, MB number density using a hemocytometer, and NP-loading yield based on MB counts from fluorescence and light microscopic images. Loading capacity of the albumin-coated MBs was evaluated by fluorescence. RESULTS Loaded MB sizes were stable over 6 days after production and were not significantly different from that of time-matched unloaded MBs. Number density evaluation showed that only 1/1 NP/MB volume ratio and unloaded MB number densities were stable over time, and that the 1/1 MB number density evaluated at each time point was not significantly different from that of unloaded MBs. The 1/10 and 1/100 NP/MB volume ratios had unstable number densities that were significantly different from that of unloaded MBs (P < .05). Fluorescence evaluation suggested that 1/1 MBs had a higher NP-loading yield than 1/10 and 1/100 MBs. Quantitative loading evaluation suggested that the 1/1 MBs had a loading capacity of 3700 NPs/MB. CONCLUSIONS A protocol was developed to load albumin MBs with functionalized PLA NPs for further drug delivery studies. The 1/1 NP/MB volume ratio appeared to be the most efficient to produce stable loaded MBs with a loading capacity of 3700 NPs/MB.
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Ayrinhac S, Gauthier M, Le Marchand G, Morand M, Bergame F, Decremps F. Thermodynamic properties of liquid gallium from picosecond acoustic velocity measurements. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:275103. [PMID: 26061830 DOI: 10.1088/0953-8984/27/27/275103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Due to discrepancies in the literature data the thermodynamic properties of liquid gallium are still in debate. Accurate measurements of adiabatic sound velocities as a function of pressure and temperature have been obtained by the combination of laser picosecond acoustics and surface imaging on sample loaded in diamond anvil cell. From these results the thermodynamic parameters of gallium have been extracted by a numerical procedure up to 10 GPa and 570 K. It is demonstrated that a Murnaghan equation of state accounts well for the whole data set since the isothermal bulk modulus BT has been shown to vary linearly with pressure in the whole temperature range. No evidence for a previously reported liquid-liquid transition has been found in the whole pressure and temperature range explored.
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Ouellet-Pelletier J, Guimont C, Gauthier M, Gravel J. 154: Risk Factors for Adverse Events Following Diagnostic Urethral Catheterization in the Pediatric Emergency Department. Paediatr Child Health 2015. [DOI: 10.1093/pch/20.5.e90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Decremps F, Gauthier M, Ayrinhac S, Bove L, Belliard L, Perrin B, Morand M, Le Marchand G, Bergame F, Philippe J. Picosecond acoustics method for measuring the thermodynamical properties of solids and liquids at high pressure and high temperature. ULTRASONICS 2015; 56:129-140. [PMID: 24852260 DOI: 10.1016/j.ultras.2014.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 03/13/2014] [Accepted: 04/02/2014] [Indexed: 06/03/2023]
Abstract
Based on the original combination of picosecond acoustics and diamond anvils cell, recent improvements to accurately measure hypersonic sound velocities of liquids and solids under extreme conditions are described. To illustrate the capability of this technique, results are given on the pressure and temperature dependence of acoustic properties for three prototypical cases: polycrystal (iron), single-crystal (silicon) and liquid (mercury) samples. It is shown that such technique also enables the determination of the density as a function of pressure for liquids, of the complete set of elastic constants for single crystals, and of the melting curve for any kind of material. High pressure ultrafast acoustic spectroscopy technique clearly opens opportunities to measure thermodynamical properties under previously unattainable extreme conditions. Beyond physics, this state-of-the-art experiment would thus be useful in many other fields such as nonlinear acoustics, oceanography, petrology, in of view. A brief description of new developments and future directions of works conclude the article.
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Gauthier M, Fletcher LB, Ravasio A, Galtier E, Gamboa EJ, Granados E, Hastings JB, Heimann P, Lee HJ, Nagler B, Schropp A, Gleason A, Döppner T, LePape S, Ma T, Pak A, MacDonald MJ, Ali S, Barbrel B, Falcone R, Kraus D, Chen Z, Mo M, Wei M, Glenzer SH. New experimental platform to study high density laser-compressed matter. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:11E616. [PMID: 25430362 DOI: 10.1063/1.4896175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have developed a new experimental platform at the Linac Coherent Light Source (LCLS) which combines simultaneous angularly and spectrally resolved x-ray scattering measurements. This technique offers a new insights on the structural and thermodynamic properties of warm dense matter. The < 50 fs temporal duration of the x-ray pulse provides near instantaneous snapshots of the dynamics of the compression. We present a proof of principle experiment for this platform to characterize a shock-compressed plastic foil. We observe the disappearance of the plastic semi-crystal structure and the formation of a compressed liquid ion-ion correlation peak. The plasma parameters of shock-compressed plastic can be measured as well, but requires an averaging over a few tens of shots.
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Fletcher LB, Lee HJ, Barbrel B, Gauthier M, Galtier E, Nagler B, Döppner T, LePape S, Ma T, Pak A, Turnbull D, White T, Gregori G, Wei M, Falcone RW, Heimann P, Zastrau U, Hastings JB, Glenzer SH. Exploring Mbar shock conditions and isochorically heated aluminum at the Matter in Extreme Conditions end station of the Linac Coherent Light Source (invited). THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:11E702. [PMID: 25430365 DOI: 10.1063/1.4891186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recent experiments performed at the Matter in Extreme Conditions end station of the Linac Coherent Light Source (LCLS) have demonstrated the first spectrally resolved measurements of plasmons from isochorically heated aluminum. The experiments have been performed using a seeded 8-keV x-ray laser beam as a pump and probe to both volumetrically heat and scatter x-rays from aluminum. Collective x-ray Thomson scattering spectra show a well-resolved plasmon feature that is down-shifted in energy by 19 eV. In addition, Mbar shock pressures from laser-compressed aluminum foils using velocity interferometer system for any reflector have been measured. The combination of experiments fully demonstrates the possibility to perform warm dense matter studies at the LCLS with unprecedented accuracy and precision.
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Mirjolet C, Dalban C, Gauthier M, Walker P, Martin E, Truc G, Peignaux-Casasnovas K, Naudy S, Maingon P, Créhange G. Cancer de la prostate localisé et radiothérapie conformationnelle avec modulation d’intensité : quels sont les paramètres dosimétriques les plus pertinents pour prédire la toxicité digestive aiguë ? Cancer Radiother 2014. [DOI: 10.1016/j.canrad.2014.07.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gauthier M, Somoskövi A, Berland JL, Ocheretina O, Mabou MM, Boncy J, Gutierrez C, Vernet G, Pape JW. Stepwise implementation of a new diagnostic algorithm for multidrug-resistant tuberculosis in Haiti. Int J Tuberc Lung Dis 2014; 18:220-6. [PMID: 24429317 DOI: 10.5588/ijtld.13.0513] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING The uptake of tests endorsed by the World Health Organization to detect and appropriately confirm multidrug-resistant tuberculosis (MDR-TB) in low-income countries remains insufficient. OBJECTIVE To validate the implementation of line-probe assays (LPA) and liquid culture to develop an algorithm to detect MDR-TB in the challenging setting of Haiti. METHODS Through an EXPAND-TB (Expanding Access to New Diagnostics for TB) partnership, proficiency testing and validation of 221 acid-fast bacilli positive specimens were performed. Sensitivity, cost and processing time were analysed. RESULTS Using liquid vs. solid culture shortened the turnaround time from 54 to 19 days, with a sensitivity of 100% vs. 98.6% and a total cost reduction of 13%. LPA detected all TB and MDR-TB cases at a lower cost than culture, in a mean time of 7.5 days. CONCLUSION The combined use of molecular and liquid culture techniques accelerates the accurate diagnosis of TB and susceptibility testing against first-line drugs in a significantly shorter time, and is less expensive. The implementation of this new algorithm could significantly and accurately improve the screening and treatment follow-up of patients affected with TB and MDR-TB.
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Ezzalfani M, Dugué A, Pulido M, Mollevi C, Filleron T, Chabaud S, Esterni B, Gauthier M, Le Deley MC, Paoletti X, Kramar A, Bousseta S. Le rôle des cohortes d’expansion dans les essais de phase I. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2014.05.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Marthey L, Sa-Cunha A, Blanc JF, Gauthier M, Cueff A, Francois E, Trouilloud I, Malka D, Bachet JB, Coriat R, Terrebonne E, De La Fouchardière C, Manfredi S, Solub D, Lécaille C, Thirot Bidault A, Carbonnel F, Taieb J. FOLFIRINOX for locally advanced pancreatic adenocarcinoma: results of an AGEO multicenter prospective observational cohort. Ann Surg Oncol 2014; 22:295-301. [PMID: 25037971 DOI: 10.1245/s10434-014-3898-9] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND First-line treatment with FOLFIRINOX significantly increases overall survival (OS) in patients with metastatic pancreatic adenocarcinoma (PA) compared with gemcitabine. The aim of this observational cohort was to evaluate the tolerability and efficacy of this regimen in unresectable locally advanced PA (LAPA). PATIENTS AND METHODS From February 2010 to February 2012, all consecutive patients from 11 French centers treated by FOLFIRINOX for a histologically proven LAPA were prospectively enrolled. Unresectability was defined independently by each center's multidisciplinary staff at diagnosis. Absence of metastatic disease was confirmed by chest-abdomen-pelvis computed tomography scan. FOLFIRINOX was delivered every 2 weeks as previously reported until progressive disease, major toxicity, or consolidation treatment by radiotherapy and/or surgery. RESULTS Seventy-seven patients were enrolled. They received a median number of five cycles (1-30). Grade 3-4 toxicities were neutropenia (11 %), nausea (9 %), diarrhea (6 %), fatigue (6 %), and anemia (1 %). Grade 2-3 sensory neuropathy occurred in 25 % of patients. No toxic death was reported and only 6 % of patients had to stop treatment because of toxicity. Disease control rate was 84 with 28 % of objective response (Response Evaluation Criteria in Solid Tumors). Seventy-five percent of patients received a consolidation therapy: 70 % had radiotherapy and 36 % underwent a surgical resection, with a curative intent. Within the whole cohort, 1-year OS rate was 77 % (95 % CI 65-86) and 1-year progression-free survival rate was 59 % (95 % CI 46-70). CONCLUSION First-line FOLFIRINOX for LAPA seems to be effective and have a manageable toxicity profile. These promising results will have to be confirmed in a phase III randomized trial.
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Ayrinhac S, Gauthier M, Bove LE, Morand M, Le Marchand G, Bergame F, Philippe J, Decremps F. Equation of state of liquid mercury to 520 K and 7 GPa from acoustic velocity measurements. J Chem Phys 2014; 140:244201. [DOI: 10.1063/1.4882695] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cougoul P, Gauthier M, Fogel O, Ysebaert L, Alric L, Adoue D, Beyne-Rauzy O. Troubles du rythme supraventriculaires : une complication sous-estimée de la surcharge en fer chez les patients thalassémiques ? Rev Med Interne 2014. [DOI: 10.1016/j.revmed.2014.03.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ouellet-Pelletier J, Guimont C, Gauthier M, Gravel J. 13: Adverse Events Following Diagnostic Uretral Catheterization in the Pediatric Emergency Department. Paediatr Child Health 2014. [DOI: 10.1093/pch/19.6.e35-13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chen SN, Gauthier M, Higginson DP, Dorard S, Mangia F, Riquier R, Atzeni S, Marquès JR, Fuchs J. Monochromatic short pulse laser produced ion beam using a compact passive magnetic device. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:043504. [PMID: 24784604 DOI: 10.1063/1.4870250] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
High-intensity laser accelerated protons and ions are emerging sources with complementary characteristics to those of conventional sources, namely high charge, high current, and short bunch duration, and therefore can be useful for dedicated applications. However, these beams exhibit a broadband energy spectrum when, for some experiments, monoenergetic beams are required. We present here an adaptation of conventional chicane devices in a compact form (10 cm × 20 cm) which enables selection of a specific energy interval from the broadband spectrum. This is achieved by employing magnetic fields to bend the trajectory of the laser produced proton beam through two slits in order to select the minimum and maximum beam energy. The device enables a production of a high current, short duration source with a reproducible output spectrum from short pulse laser produced charged particle beams.
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