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Ajeddig H, Adam R, Ade P, André P, Artis E, Aussel H, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby A, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R, Shimajiri Y. Probing the role of magnetic fields in star-forming filaments: NIKA2-Pol commissioning results toward OMC-1. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700002] [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: 11/15/2022] Open
Abstract
Dust polarization observations are a powerful, practical tool to probe the geometry (and to some extent, the strength) of magnetic fields in starforming regions. In particular, Planck polarization data have revealed the importance of magnetic fields on large scales in molecular clouds. However, due to insufficient resolution, Planck observations are unable to constrain the B-field geometry on prestellar and protostellar scales. The high angular resolution of 11.7 arcsec provided by NIKA2-Pol 1.15 mm polarimetric imaging, corresponding to 0.02 pc at the distance of the Orion molecular cloud (OMC), makes it possible to advance our understanding of the B-field morphology in star-forming filaments and dense cores (IRAM 30m large program B-FUN). The commissioning of the NIKA2-Pol instrument has led to several challenging issues, in particular, the instrumental polarization or intensity-to-polarization “leakage” effect. In the present paper, we illustrate how this effect can be corrected for, leading to reliable exploitable data in a structured, extended source such as OMC-1. We present a statistical comparison between NIKA2-Pol and SCUBA2-Pol2 results in the OMC-1 region. We also present tentative evidence of local pinching of the B-field lines near Orion-KL, in the form of a new small-scale hourglass pattern, in addition to the larger-scale hourglass already seen by other instruments such as Pol2.
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Muñoz-Echeverría M, Adam R, Ade P, Ajeddig H, André P, Arnaud M, Artis E, Aussel H, Bartalucci I, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Ferragamo A, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Paliwal A, Perotto L, Pisano G, Pointecouteau E, Ponthieu N, Pratt GW, Revéret V, Rigby AJ, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Yepes G. Multi-probe analysis of the galaxy cluster CL J1226.9+3332: Hydrostatic mass and hydrostatic-to-lensing bias. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700032] [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: 11/14/2022] Open
Abstract
We present a multi-probe analysis of the well-known galaxy cluster CL J1226.9+3332 as a proof of concept for multi-wavelength studies within the framework of the NIKA2 Sunyaev-Zel’dovich Large Program (LPSZ). CL J1226.9+3332 is a massive and high redshift (z = 0.888) cluster that has already been observed at several wavelengths. A joint analysis of the thermal SZ (tSZ) effect at millimeter wavelength with the NIKA2 camera and in X-ray with the XMM-Newton satellite permits the reconstruction of the cluster’s thermodynamical properties and mass assuming hydrostatic equilibrium. We test the robustness of our mass estimates against different definitions of the data analysis transfer function. Using convergence maps reconstructed from the data of the CLASH program we obtain estimates of the lensing mass, which we compare to the estimated hydrostatic mass. This allows us to measure the hydrostatic-to-lensing mass bias and the associated systematic effects related to the NIKA2 measurement. We obtain M500HSE = (7:65 ± 1:03) × 1014M⊙ and M500lens = (7:35 ± 0:65) × 1014M⊙, which implies a HSE-to-lensing bias consistent with 0 within 20%.
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Katsioli S, Adam R, Ade P, Ajeddig H, André P, Artis E, Aussel H, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Looze I, De Petris M, Désert FX, Doyle S, Driessen EC, Ejlali G, Galametz M, Galliano F, Gomez A, Goupy J, Jones A, Hughes A, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Madden S, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Nersesian A, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby A, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Smith MWL, Tabatabaei F, Tucker C, Xilouris EM, Zylka R. Exploring the millimetre emission in nearby galaxies: Analysis of the edge-on galaxy NGC 891. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700023] [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: 11/15/2022] Open
Abstract
New observations of the edge-on galaxy NGC 891, at 1.15 and 2mm obtained with the IRAM 30-m telescope and the NIKA2 camera, within the framework of the IMEGIN (Interpreting the Millimetre Emission of Galaxies with IRAM and NIKA2) Large Program, are presented in this work. By using multiwavelength maps (from the mid-IR to the cm wavelengths) we perform SED fitting in order to extract the physical properties of the galaxy on both global and local (~kpc) scales. For the interpretation of the observations we make use of a state-of-the-art SED fitting code, HerBIE (HiERarchical Bayesian Inference for dust Emission). The observations indicate a galaxy morphology, at mm wavelengths, similar to that of the cold dust emission traced by submm observations and to that of the molecular gas. The contribution of the radio emission at the NIKA2 bands is very small (negligible at 1.15 mm and ~ 10% at 2 mm) while it dominates the total energy budget at longer wavelengths (beyond 5 mm). On local scales, the distribution of the free-free emission resembles that of the dust thermal emission while the distribution of the synchrotron emission shows a deficiency along the major axis of the disc of the galaxy.
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Perotto L, Adam R, Ade P, Ajeddig H, André P, Arnaud M, Artis E, Aussel H, Bartalucci I, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Ferragamo A, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Paliwal A, Pisano G, Pointecouteau E, Ponthieu N, Pratt G, Revéret V, Rigby AJ, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Yepes G. The NIKA2 Sunyaev-Zeldovich Large Program: Precise galaxy cluster physics for an accurate cluster-based cosmology. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700038] [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: 11/14/2022] Open
Abstract
The NIKA2 Guaranteed-Time SZ Large Program (LPSZ) is dedicated to the high-angular resolution SZ mapping of a representative sample of 45 SZ-selected galaxy clusters drawn from the catalogues of the Planck satellite, or of the Atacama Cosmology Telescope. The LPSZ sample spans a mass range from 3 to 11 × 1014M⊙ and a redshift range from 0:5 to 0:9, extending to higher redshift and lower mass the previous samples dedicated to the cluster mass calibration and universal properties estimation. The main goals of the LPSZ are the measurement of the average radial profile of the ICM pressure up to R500 by combining NIKA2 with Planck or ACT data, and the estimation of the scaling law between the SZ observable and the mass using NIKA2, XMM-Newton and Planck/ACT data. Furthermore, combining LPSZ data with existing or forthcoming public data in lensing, optical/NIR or radio domains, we will build a consistent picture of the cluster physics and further gain knowledge on the mass estimate as a function of the cluster morphology and dynamical state.
We give an overview of the LPSZ, present recent results and discuss the future implication for cosmology with galaxy clusters.
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Bing L, Adam R, Ade P, Ajeddig H, André P, Artis E, Aussel H, Beelen A, Benoît A, Berta S, Béthermin M, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Neri R, Omont A, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby A, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. Searching for high-z DSFGs with NIKA2 and NOEMA. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700006] [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: 11/14/2022] Open
Abstract
As the possible progenitors of passive galaxies at z=2-3, dusty starforming galaxies (DSFGs) at z>4 provide a unique perspective to study the formation, assembly, and early quenching of massive galaxies in the early Universe. The extreme obscuration in optical-IR makes (sub)mm spectral scans the most universal and unbiased way to confirm/exclude the high-z nature of candidate dusty star-forming galaxies. We present here the status of the NIKA2 Cosmological Legacy Survey (N2CLS), which is the deepest wide-area singledish survey in the millimeter searching for high-z DSFGs. We also introduce a joint-analysis method to effciently search for the spectroscopic redshift of high-z DSFGs with noisy spectra and photometric data and present its success in identifying the redshift of DSFGs found in NIKA2 science verification data.
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Peretto N, Adam R, Ade P, Ajeddig H, André P, Artis E, Aussel H, Bacmann A, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby A, Ristorcelli I, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. Galactic star formation with NIKA2 (GASTON): Filament convergence and its link to star formation. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In the past decade filaments have been recognised as a major structural element of the interstellar medium, the densest of these filaments hosting the formation of most stars. In some star-forming molecular clouds converging networks of filaments, also known as hub filament systems, can be found. These hubs are believed to be preferentially associated to massive star formation. As of today, there are no metrics that allow the systematic quantification of a filament network convergence. Here, we used the IRAM 30m NIKA2 observations of the Galactic plane from the GASTON large programme to systematically identify filaments and produce a filament convergence parameter map. We use such a map to show that: i. hub filaments represent a small fraction of the global filament population; ii. hubs host, in proportion, more massive and more luminous compact sources that non-hubs; iii. hub-hosting clumps are more evolved that non-hubs; iv. no discontinuities are observed in the properties of compact sources as a function of convergence parameter. We propose that the rapid global collapse of clumps is responsible for (re)organising filament networks into hubs and, in parallel, enhancing the mass growth of compact sources.
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Artis E, Adam R, Ade P, Ajeddig H, André P, Arnaud M, Aussel H, Bartalucci I, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Ferragamo A, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Paliwal A, Perotto L, Pisano G, Pointecouteau E, Ponthieu N, Pratt GW, Revéret V, Rigby AJ, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Yepes G. PSZ2 G091: A massive double cluster at z ~ 0.822 observed by the NIKA2 camera. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700003] [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: 11/14/2022] Open
Abstract
PSZ2 G091.83+26.11 is a massive galaxy cluster with M500 = 7:43 × 1014M⊙ at z = 0:822. This object exhibits a complex morphology with a clear bimodality observed in X-rays. However, it was detected and analysed in the Planck sample as a single, spherical cluster following a universal profile [1]. This model can lead to miscalculations of thermodynamical quantities, like the pressure profile. As future multiwavelength cluster experiments will detect more and more objects at higher redshifts (where we expect the fraction of merging objects to be higher), it is crucial to quantify this systematic effect. In this work, we use high-resolution observations of PSZ2 G091.83+26.11 by the NIKA2 camera to integrate the morphological characteristics of the cluster in our modelling. This is achieved by fitting a two-halo model to the SZ image and then by reconstruction of the resulting projected pressure profile. We then compare these results with the spherical assumption.
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Rigby A, Adam R, Ade P, Ajeddig H, Anderson M, André P, Artis E, Aussel H, Bacmann A, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Bracco A, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, García P, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Peretto N, Perotto L, Pisano G, Ponthieu N, Revéret V, Ristorcelli I, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Watkins E, Zylka R. Galactic Star Formation with NIKA2 (GASTON): Evidence of mass accretion onto dense clumps. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700041] [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: 11/14/2022] Open
Abstract
High-mass stars (m* ≳ 8 M⊙) play a crucial role in the evolution of galaxies, and so it is imperative that we understand how they are formed. We have used the New IRAM KIDs Array 2 (NIKA2) camera on the Institut de Radio Astronomie Millimétrique (IRAM) 30-m telescope to conduct high-sensitivity continuum mapping of ~ 2 deg2 of the Galactic plane (GP) as part of the Galactic Star Formation with NIKA2 (GASTON) large program. We have identified a total of 1467 clumps within our deep 1.15 mm continuum maps and, by using overlapping continuum, molecular line, and maser parallax data, we have determined their distances and physical properties. By placing them upon an approximate evolutionary sequence based upon 8 μm Spitzer imaging, we find evidence that the most massive dense clumps accrete material from their surrounding environment during their early evolution, before dispersing as star formation advances, supporting clump-fed models of high-mass star formation.
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Lestrade JF, Adam R, Ade P, Ajeddig H, André P, Artis E, Aussel H, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, Coulais A, De Petris M, Désert FX, Doyle S, Driessen EFC, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby AJ, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. Overdensity of SubMillimiter Galaxies in the GJ526 Field mapped with the NIKA2 Camera. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700027] [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: 11/14/2022] Open
Abstract
Using the NIKA2 dual band millimeter camera installed on the IRAM30m telescope, we have mapped a relatively large field (~ 70 arcmin2) in the direction of the star GJ526 to investigate the nature of the sources found with the MAMBO camera at 1.2 mm ten years earlier. We have found that they must be dust-obscured galaxies (SMGs) in the background beyond the star. The new NIKA2 map at 1.15 mm reveals additional sources and, in fact, an overdensity of SMGs predominantly distributed along a filament-like structure in projection on the sky across the whole observed field. We speculate this might be a cosmic filament at high redshift as revealed in cosmological hydrodynamical simulations. Measurement of spectroscopic redshifts of the SMGs in the candidate filament is required now for a definitive confirmation of the nature of the structure.
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Ritacco A, Adam R, Ade P, Ajeddig H, André P, Artis E, Aumont J, Aussel H, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby AJ, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. Crab nebula at 260 GHz with the NIKA2 polarimeter: Implications for the polarization angle calibration of future CMB experiments. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700042] [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: 11/14/2022] Open
Abstract
The quest for primordial gravitational waves enclosed in the Cosmic Microwave Background (CMB) polarization B-modes signal motivates the development of a new generation of high sensitive experiments (e.g. CMBS4, LiteBIRD), thus allowing to probe the inflationary epoch in the early Universe. However, this will be only possible by ensuring a high control of the instrumental systematic effects and an accurate absolute calibration of the polarization angle.
The Crab nebula is known to be a polarization calibrator on the sky for CMB experiments. Already used for the Planck satellite it exhibits a high polarized signal at microwave wavelengths. In this work we present Crab polarization observations obtained, in the 260 GHz frequency band, with the NIKA2 instrument. Furthermore, we discuss the accuracy needed on such a measurement to improve the constraints on the absolute angle calibration for CMB experiments.
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11
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Muñoz-Echeverría M, Adam R, Ade P, Ajeddig H, André P, Arnaud M, Artis E, Aussel H, Bartalucci I, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, De Petris M, Désert FX, Doyle S, Driessen EFC, Ferragamo A, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, Monfardini A, Paliwal A, Perotto L, Pisano G, Pointecouteau E, Ponthieu N, Pratt GW, Revéret V, Rigby AJ, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Yepes G. The LPSZ-CLASH galaxy cluster sample: Combining lensing and hydrostatic mass estimates. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700033] [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: 11/14/2022] Open
Abstract
Starting from the clusters included in the NIKA sample and in the NIKA2 Sunyaev-Zel’dovich Large Program (LPSZ) we have selected a sample of six common objects with the Cluster Lensing And Supernova survey with Hubble (CLASH) lensing data. For the LPSZ clusters we have at our disposal both high-angular resolution observations of the thermal SZ with NIKA and NIKA2 and X-ray observations with XMM-Newton from which hydrostatic mass estimates can be derived. In addition, the CLASH dataset includes lensing convergence maps that can be converted into lensing estimates of the total mass of the cluster. One-dimensional mass profiles are used to derive integrated mass estimates accounting for systematic effects (data processing, modeling, etc.). Two-dimensional analysis of the maps can reveal substructures in the cluster and, therefore, inform us about the dynamical state of each system. Moreover, we are able to study the hydrostatic mass to lensing mass bias, across different morphology and a range of redshift clusters to give more insight on the hydrostatic mass bias. The analysis presented in this proceeding follows the study discussed in [20].
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Ruppin F, Adam R, Ade P, Ajeddig H, André P, Artis E, Aussel H, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Brodwin M, Calvo M, Catalano A, Decker B, De Petris M, Désert FX, Doyle S, Driessen EFC, Eisenhardt PRM, Gomez A, Gonzalez AH, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Maury A, Mauskopf P, Mayet F, McDonald M, Monfardini A, Moravec E, Muñoz-Echeverría M, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby AJ, Ritacco A, Romero C, Roussel H, Schuster K, Shu S, Sievers A, Stanford S, Stern D, Tucker C, Zylka R. Mapping the intracluster medium temperature in the era of NIKA2 and MUSTANG-2. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700043] [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: 11/14/2022] Open
Abstract
We present preliminary results from an on-going program that aims at mapping the intracluster medium (ICM) temperature of high redshift galaxy clusters from the MaDCoWS sample using a joint analysis of shallow X-ray data obtained by Chandra and high angular resolution Sunyaev-Zel’dovich (SZ) observations realized with the NIKA2 and MUSTANG-2 cameras. We also present preliminary results from an on-going Open Time program within the NIKA2 collaboration that aims at mapping the ICM temperature of a galaxy cluster at z = 0.45 from the resolved detection of the relativistic corrections to the SZ spectrum. These studies demonstrate how high angular resolution SZ observations will play a major role in the coming decade to push the investigation of ICM dynamics and non-gravitational processes to high redshift before the next generation X-ray observatories come into play.
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13
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Ejlali G, Adam R, Ade P, Ajeddig H, André P, Artis E, Aussel H, Beelen A, Benoît A, Berta S, Bing L, Bourrion O, Calvo M, Catalano A, de Looze I, De Petris M, Désert FX, Doyle S, Driessen EC, Galametz M, Galliano F, Gomez A, Goupy J, Jones A, Hughes A, Katsioli S, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez JF, Madden S, Maury A, Mauskopf P, Mayet F, Monfardini A, Muñoz-Echeverría M, Nersesian A, Perotto L, Pisano G, Ponthieu N, Revéret V, Rigby A, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Smith MWSL, Tabatabaei FS, Tucker C, Xilouris E, Zylka R. Dust Emission in Galaxies at Millimeter Wavelengths: Cooling of star forming regions in NGC6946. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202225700016] [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: 11/14/2022] Open
Abstract
Interstellar dust plays an important role in the formation of molecular gas and the heating and cooling of the interstellar medium. The spatial distribution of the mm-wavelength dust emission from galaxies is largely unexplored. The NIKA2 Guaranteed Time Project IMEGIN (Interpreting the Millimeter Emission of Galaxies with IRAM and NIKA2) has recently mapped the mm emission in the grand design spiral galaxy NGC6946. By subtracting the contributions from the free-free, synchrotron, and CO line emission, we map the distribution of the pure dust emission at 1:15mm and 2mm. Separating the arm/interarm regions, we find a dominant 2mm emission from interarms indicating the significant role of the general interstellar radiation field in heating the cold dust. Finally, we present maps of the dust mass, temperature, and emissivity index using the Bayesian MCMC modeling of the spectral energy distribution in NGC6946.
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Vanwalleghem S, Sirparanta A, Leclercq S, Deborde AS, Miljkovitch R. Multiple models of attachment: A new way of understanding perinatal depression. Encephale 2021; 48:593-594. [PMID: 34809959 DOI: 10.1016/j.encep.2021.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 06/25/2021] [Accepted: 06/30/2021] [Indexed: 11/18/2022]
Affiliation(s)
- S Vanwalleghem
- UFR SPSE, bureau C108A, Unité de Recherche CLIPSYD, Université Paris Nanterre, 200, avenue de la République, 92001 Nanterre Cedex, France.
| | - A Sirparanta
- Laboratoire Paragraphe EA 349, Paris 8 University, 2, rue de la Liberté, 93200, Saint-Denis, France
| | - S Leclercq
- Centre Hospitalier La Chartreuse, Unité Père-Mère-Bébé, 1, boulevard Chanoine Kir, 21000 Dijon, France
| | - A-S Deborde
- Laboratoire Paragraphe EA 349, Paris 8 University, 2, rue de la Liberté, 93200, Saint-Denis, France
| | - R Miljkovitch
- Laboratoire Paragraphe EA 349, Paris 8 University, 2, rue de la Liberté, 93200, Saint-Denis, France
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15
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Salavrakos M, Leclercq S, De Timary P, Dom G. Microbiome and substances of abuse. Prog Neuropsychopharmacol Biol Psychiatry 2021; 105:110113. [PMID: 32971216 DOI: 10.1016/j.pnpbp.2020.110113] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/07/2020] [Accepted: 09/14/2020] [Indexed: 12/12/2022]
Abstract
There is a growing amount of evidence showing a reciprocal relation between the gut microbiota and the brain. Substance use disorders (SUD), which are a major cause of preventable morbidity and mortality worldwide, have an influence on the gut microbiota and on the gut-brain axis. The communication between the microbiota and the brain exists through different pathways: (1) the immune response elicited by bacterial products, coupled with alterations of the intestinal barrier allowing these products to enter the bloodstream, (2) the direct and indirect effects of bacterial metabolites such as short chain fatty acids (SCFAs) or tryptophan on the brain, (3) and the hypothalamic-pituitary-adrenal (HPA) axis, whose peripheral afferents can be influenced by the microbiota, and can in turn activate microglia. Among substances of abuse, alcohol has been the subject of the greatest number of studies in this field. In some but not all patients suffering from alcohol-use-disorder (AUD), alcohol alters the composition of the gut microbiota and the permeability of the intestinal barrier, directly and through dysbiosis. It has also been well demonstrated that alcohol induces a peripheral inflammation; it is still unclear whether it induces a central inflammation, as there are contradictory results in human studies. In animal studies, it has been shown that neuroinflammation increases during alcohol withdrawal. Literature on opioids and stimulants is less numerous. Chronic morphine intake induces dysbiosis, increased intestinal permeability and a probable neuroinflammation, which could explain symptoms such as tolerance, hyperalgesia and deficit in reward behavior. Cocaine induces a dysbiosis and conversely the microbiome can modulate the behavioral response to stimulant drugs. Tobacco cessation is associated with an increase in microbiota diversity. Taken together, the findings of our narrative literature review suggest a bidirectional influence in the pathogenesis of substance use disorders.
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Affiliation(s)
- M Salavrakos
- Target Journal Progress in Neuropsychopharmacology and Biological Psychiatry, Belgium
| | - S Leclercq
- Target Journal Progress in Neuropsychopharmacology and Biological Psychiatry, Belgium
| | - P De Timary
- Target Journal Progress in Neuropsychopharmacology and Biological Psychiatry, Belgium
| | - G Dom
- Target Journal Progress in Neuropsychopharmacology and Biological Psychiatry, Belgium.
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16
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Amadieu C, Leclercq S, Thijssen V, Neyrinck A, Stärkel P, de Timary P, Delzenne N. Nutritional intake in alcohol-dependent patients: effect of prebiotic fiber supplementation during alcohol withdrawal. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2020.09.350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Leclercq S, de Timary P, Stärkel P. Targeting the gut microbiota to treat alcoholic liver diseases: evidence and promises. Acta Gastroenterol Belg 2020; 83:616-621. [PMID: 33321019] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The human intestine is colonized by a variety of microbes that influence the metabolic responses, the immune system and the nervous system. Dietary patterns are important factors that shape the composition of the gut microbiota. Many animal models of alcohol exposure have highlighted the key role of the alcohol-induced gut microbiota alterations, leaky gut and translocation of microbial products in the development of alcoholic liver disease (ALD). However, in humans, there is no clear picture defining an "alcoholic microbiome", and the link between intestinal dysbiosis and ALD development is far from being understood. Although we do not comprehend all the mechanistic insights, clinical studies aiming at modulating the gut microbiota of alcoholic patients have shown some beneficial effects. Here we review the potential therapeutic effects of probiotics in ALD and give some clinical perspectives on the role of prebiotics and the use of fecal microbiota transplantation.
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Affiliation(s)
- S Leclercq
- Institute of Neuroscience, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
| | - P de Timary
- Institute of Neuroscience, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
- Department of Adult Psychiatry, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - P Stärkel
- Institute of Experimental and Clinical Research, Laboratory of Hepato-gastroenterology, Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium
- Department of Hepato-gastroenterology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
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18
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Peretto N, Rigby A, Adam R, Ade P, André P, Andrianasolo A, Aussel H, Bacmann A, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Mauskopf P, Mayet F, Monfardini A, Motte F, Perotto L, Pisano G, Ponthieu N, Revéret V, Ristorcelli I, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. GASTON: Galactic Star Formation with NIKA2 A new population of cold massive sources discovered. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Understanding where and when the mass of stars is determined is one of the fundamental, mostly unsolved, questions in astronomy. Here, we present the first results of GASTON, the Galactic Star Formation with NIKA2 large programme on the IRAM 30m telescope, that aims to identify new populations of low-brightness sources to tackle the question of stellar mass determination across all masses. In this paper, we focus on the high-mass star formation part of the project, for which we map a ~ 2 deg2 region of the Galactic plane around l = 24° in both 1.2 mm and 2.0 mm continuum. Half-way through the project, we reach a sensitivity of 3.7 mJy/beam at 1.2mm. Even though larger than our target sensitivity of 2 mJy, the current sensitivity already allows the identification of a new population of cold, compact sources that remained undetected in any (sub-)mm Galactic plane survey so far. In fact, about 25% of the ~ 1600 compact sources identified in the 1.2mm GASTON image are new detections. We present a preliminary analysis of the physical properties of the GASTON sources as a function of their evolutionary stage, arguing for a potential evolution of the mass distribution of these sources with time.
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Mayet F, Adam R, Ade P, André P, Andrianasolo A, Arnaud M, Aussel H, Bartalucci I, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Mauskopf P, Monfardini A, Perotto L, Pisano G, Pointecouteau E, Ponthieu N, Pratt G, Revéret V, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. Cluster cosmology with the NIKA2 SZ Large Program. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The main limiting factor of cosmological analyses based on thermal Sunyaev-Zel’dovich (SZ) cluster statistics comes from the bias and systematic uncertainties that affect the estimates of the mass of galaxy clusters. High-angular resolution SZ observations at high redshift are needed to study a potential redshift or morphology dependence of both the mean pressure profile and of the mass-observable scaling relation used in SZ cosmological analyses. The NIKA2 camera is a new generation continuum instrument installed at the IRAM 30-m telescope. With a large field of view, a high angular resolution and a high-sensitivity, the NIKA2 camera has unique SZ mapping capabilities. In this paper, we present the NIKA2 SZ large program, aiming at observing a large sample of clusters at redshifts between 0.5 and 0.9, and the characterization of the first cluster oberved with NIKA2.
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Ruppin F, Adam R, Ade P, André P, Andrianasolo A, Arnaud M, Aussel H, Bartalucci I, Bautz M, Beelen A, Benoît A, Bideaud A, Bourrion O, Brodwin M, Calvo M, Catalano A, Comis B, Decker B, De Petris M, Désert FX, Doyle S, Driessen EFC, Eisenhardt PRM, Gomez A, Gonzalez AH, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Mauskopf P, Mayet F, McDonald M, Monfardini A, Moravec E, Perotto L, Pisano G, Pointecouteau E, Ponthieu N, Pratt GW, Revéret V, Ritacco A, Romero C, Roussel H, Schuster K, Shu S, Sievers A, Stanford SA, Stern D, Tucker C, Zylka R. Mapping the gas thermodynamic properties of the massive cluster merger MOO J1142+1527 at z = 1.2. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present the results of the analysis of the very massive cluster MOO J1142+1527 at a redshift z = 1.2 based on high angular resolution NIKA2 Sunyaev-Zel’dovich (SZ) andChandraX-ray data. This multi-wavelength analysis enables us to estimate the shape of the temperature profile with unprecedented precision at this redshift and to obtain a map of the gas entropy distribution averaged along the line of sight. The comparison between the cluster morphological properties observed in the NIKA2 andChandramaps together with the analysis of the entropy map allows us to conclude that MOOJ1142+1527 is an on-going merger hosting a cool-core at the position of the X-ray peak. This work demonstrates how the addition of spatially-resolved SZ observations to low signal-to-noise X-ray data can bring valuable insights on the intracluster medium thermodynamic properties atz>1.
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Ritacco A, Adam R, Ade P, Ajeddig H, André P, Andrianasolo A, Aussel H, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Mauskopf P, Maury A, Mayet F, Monfardini A, Perotto L, Pisano G, Ponthieu N, Revéret V, Romero C, Roussel H, Ruppin F, Schuster K, Shimajiri Y, Shu S, Sievers A, Tucker C, Zylka R. Observing with NIKA2Pol from the IRAM 30m telescope : Early results on the commissioning phase. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The NIKA2 polarization channel at 260 GHz (1.15 mm) has been proposed primarily to observe galactic star-forming regions and probe the critical scales between 0.01-0.05 pc at which magnetic field lines may channel the matter of interstellar filaments into growing dense cores. The NIKA2 polarime-ter consists of a room temperature continuously rotating multi-mesh HWP and a cold polarizer that separates the two orthogonal polarizations onto two 260 GHz KIDs arrays. We describe in this paper the preliminary results obtained during the most recent commissioning campaign performed in December 2018. We concentrate here on the analysis of the extended sources, while the observation of compact sources is presented in a companion paper [12]. We present preliminary NIKA2 polarization maps of the Crab nebula. We find that the integrated polarization intensity flux measured by NIKA2 is consistent with expectations. In terms of polarization angle, we are still limited by systematic uncertainties that will be further investigated in the forthcoming commissioning campaigns.
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22
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Ajeddig H, Adam R, Ade P, André P, Andrianasolo A, Aussel H, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Maury A, Mauskopf P, Mayet F, Monfardini A, Perotto L, Pisano G, Ponthieu N, Revéret V, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shimajiri Y, Shu S, Sievers A, Tucker C, Zylka R. Preliminary results on the instrumental polarization of NIKA2-Pol at the IRAM 30m telescope. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Clarifying the role of magnetic fields in the star formation process is crucial. Observations have already shown that magnetic fields play an important role in the early stages of star formation. The high spatial resolution (∼0.01 to 0.05 pc) provided by NIKA2-Pol 1.2 mm imaging polarimetry of nearby clouds will help us clarify the geometry of the B-field within dense cores and molecular filaments as part of the IRAM 30m large program B-FUN. There are numerous challenging issues in the validation of NIKA2-Pol such as the calibration of instrumental polarization. The commissioning phase of NIKA2-Pol is underway and is helping us characterize the intensity-to-polarization “leakage” pattern of the instrument. We present a preliminary analysis of the leakage pattern and its dependence with elevation. We also present the current leakage correction made possible by the NIKA2 pipeline in polarization mode based on the NIKA2-Pol commissioning data taken in December 2018. Based on reduced Stokes I, Q, U data we find that the leakage pattern of NIKA2-Pol depends on elevation and is sensitive to the focus of the telescope.
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23
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Lestrade JF, Augereau JC, Booth M, Adam R, Ade P, André P, Andrianasolo A, Aussel H, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Holland W, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lefèvre C, Macías-Pérez J, Mauskopf P, Mayet F, Monfardini A, Perotto L, Pisano G, Ponthieu N, Revéret V, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Thébault P, Tucker C, Zylka R. Debris disks around stars in the NIKA2 era. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The new NIKA2 camera at the IRAM 30m radiotelescope was used to observe three known debris disks in order to constrain the SED of their dust emission in the millimeter wavelength domain. We have found that the spectral index between the two NIKA2 bands (1mm and 2mm) is consistent with the Rayleigh-Jeans regime (λ-2), unlike the steeper spectra (λ-3) measured in the submillimeter-wavelength domain for two of the three disks - around the stars Vega and HD107146. We provide a succesful proof of concept to model this spectral inversion in using two populations of dust grains, those smaller and those larger than a grain radius a0 of 0.5mm. This is obtained in breaking the slope of the size distribution and the functional form of the absorption coefficient of the standard model. The third disk - around the star HR8799 - does not exhibit this spectral inversion but is also the youngest.
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Roussel H, Ponthieu N, Adam R, Ade P, André P, Andrianasolo A, Aussel H, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen EFC, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Mauskopf P, Mayet F, Monfardini A, Perotto L, Pisano G, Revéret V, Ritacco A, Romero C, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. NIKA2 mapping and cross-instrument SED extraction of extended sources with Scanamorphos. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800024] [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: 11/15/2022] Open
Abstract
The steps taken to tailor to NIKA2 observations the Scanamorphos algorithm (initially developed to subtract low-frequency noise from Herschel on-the-fly observations) are described, focussing on the consequences of the different instrument architecture and observation strategy. The method, making the most extensive use of the redundancy built in the multi-scan coverage with large arrays of a given region of the sky, is applicable to extended sources, while the pipeline is so far optimized for compact sources. An example of application is given. A related tool to build consistent broadband SEDs from 60 microns to 2 mm, combining Herschel and NIKA2 data, has also been developed. Its main task is to process the data least affected by low-frequency noise and coverage limitations (i.e. the Herschel data) through the same transfer function as the NIKA2 data, simulating the same scan geometry and applying the same noise and atmospheric signal as extracted from the 1mm and 2mm data.
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25
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Ritacco A, Adam R, Ade P, André P, Andrianasolo A, Aussel H, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Mauskopf P, Maury A, Mayet F, Monfardini A, Perotto L, Pisano G, Ponthieu N, Revéret V, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. The NIKA polarimeter on science targets: Crab nebula observations at 150 GHz and dual-band polarization images of Orion Molecular Cloud OMC-1. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800021] [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: 11/15/2022] Open
Abstract
We present here the polarization system of the NIKA camera and give a summary of the main results obtained and performed studies on Orion and the Crab nebula. The polarization system was equipped with a room temperature continuously rotating multi-mesh half wave plate and a grid polarizer facing the NIKA cryostat window. NIKA even though less sensitive than NIKA2 had polarization capability in both 1 and 2 millimiter bands. NIKA polarization observations demonstrated the ability of such a technology in detecting the polarization of different targets, compact and extended sources like the Crab nebula and Orion Molecular Cloud region OMC-1. These measurements together with the developed techniques to deal with systematics, opened the way to the current observations of NIKA2 in polarization that will provide important advances in the studies of galactic and extra-galactic emission and magnetic fields.
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Macías-Pérez J, Adam R, Ade P, André P, Andrianasolo A, Aussel H, Arnaud M, Bartalucci I, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Kéruzoré F, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Mauskopf P, Mayet F, Monfardini A, Perotto L, Pisano G, Pointecouteau E, Ponthieu N, Pratt G, Revéret V, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. NIKA: a mm camera for Sunyaev-Zel’dovich science in clusters of galaxies. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800016] [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: 11/14/2022] Open
Abstract
Clusters of galaxies, the largest bound objects in the Universe, constitute a cosmological probe of choice, which is sensitive to both dark matter and dark energy. Within this framework, the Sunyaev-Zel’dovich (SZ) effect has opened a new window for the detection of clusters of galaxies and for the characterization of their physical properties such as mass, pressure and temperature. NIKA, a KID-based dual band camera installed at the IRAM 30-m telescope, was particularly well adapted in terms of frequency, angular resolution, field-of-view and sensitivity, for the mapping of the thermal and kinetic SZ effect in high-redshift clusters. In this paper, we present the NIKA cluster sample and a review of the main results obtained via the measurement of the SZ effect on those clusters: reconstruction of the cluster radial pressure profile, mass, temperature and velocity.
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Kéruzoré F, Adam R, Ade P, André P, Andrianasolo A, Arnaud M, Aussel H, Bartalucci I, Beelen A, Benoît A, Bideaud A, Bourrion O, Calvo M, Catalano A, Comis B, De Petris M, Désert FX, Doyle S, Driessen E, Gomez A, Goupy J, Kramer C, Ladjelate B, Lagache G, Leclercq S, Lestrade JF, Macías-Pérez J, Mauskopf P, Mayet F, Monfardini A, Perotto L, Pisano G, Pointecouteau E, Ponthieu N, Pratt G, Revéret V, Ritacco A, Romero C, Roussel H, Ruppin F, Schuster K, Shu S, Sievers A, Tucker C, Zylka R. A low-mass galaxy cluster as a test-case study for the NIKA2 SZ Large Program. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022800012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
High-resolution mapping of the hot gas in galaxy clusters is a key tool for cluster-based cosmological analyses. Taking advantage of the NIKA2 millimeter camera operated at the IRAM 30-m telescope, the NIKA2 SZ Large Program seeks to get a high-resolution follow-up of 45 galaxy clusters covering a wide mass range at high redshift in order to re-calibrate some of the tools needed for the cosmological exploitation of SZ surveys. We present the second cluster analysis of this program, targeting one of the faintest sources of the sample in order to tackle the difficulties in data reduction for such faint, low-SNR clusters. In this study, the main challenge is the precise estimation of the contamination by sub-millimetric point sources, which greatly affects the tSZ map of the cluster. We account for this contamination by performing a joint fit of the SZ signal and of the flux density of the compact sources. A prior knowledge of these fluxes is given by the adjustment of the SED of each source using data from both NIKA2 and the Herschel satellite. The first results are very promising and demonstrate the possibility to estimate thermodynamic properties with NIKA2, even in a compact cluster heavily contaminated by point sources.
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Leclercq S, Amadieu C, Stärkel P, de Timary P, Delzenne N. [What is the role of the gut microbiota in the development of alcohol use disorders?]. Rev Med Liege 2019; 74:281-286. [PMID: 31206267] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Alcohol addiction is a complex and multifactorial disease influenced by social, psychological and biological aspects. The current pharmacological drugs used in the management of alcohol dependence have shown only a modest efficacy and the relapse rate remains high in this disease. Recently, the gut microbiota, a huge and dynamic ecosystem made up of billions of microorganisms living in our intestine, has been shown to regulate many important functions for human health. Indeed, the gut microbiota is known to influence our metabolism, our immune system as well as our nervous system with consequences for brain functions, mood and behaviour. We have shown that heavy and chronic alcohol consumption induced important changes in the composition of the gut microbiota. Furthermore, the microbial changes are associated with the severity of depression, anxiety and alcohol craving that are important factors predicting the risk of relapse. This suggests the existence of a gut-brain axis in alcohol dependence and supports the development of new therapeutic alternatives, targeting the gut microbiota, in the management of alcohol dependence.
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Affiliation(s)
- S Leclercq
- Louvain Drug Research Institute et Institute of Neuroscience, Bruxelles, Belgique
| | - C Amadieu
- Louvain Drug Research Institute et Institute of Neuroscience, Bruxelles, Belgique
| | - P Stärkel
- Service d'Hépato-Gastroentérologie, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
| | - P de Timary
- Service de Psychiatrie Adulte, Cliniques Universitaires Saint-Luc, Bruxelles, Belgique
| | - N Delzenne
- Louvain Drug Research Institute, Bruxelles, Belgique
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29
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Putman S, Argenson JN, Bonnevialle P, Ehlinger M, Vie P, Leclercq S, Bizot P, Lustig S, Parratte S, Ramdane N, Colmar M. Ten-year survival and complications of total knee arthroplasty for osteoarthritis secondary to trauma or surgery: A French multicentre study of 263 patients. Orthop Traumatol Surg Res 2018; 104:161-164. [PMID: 29292123 DOI: 10.1016/j.otsr.2017.11.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/15/2017] [Accepted: 11/19/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Previous surgical procedures raise technical challenges in performing total knee arthroplasty (TKA) and may affect TKA outcomes. Survival rates of TKA done after trauma or surgery to the knee have not been accurately determined in large populations. The objectives of this retrospective study in 263 patients with TKA after knee trauma or surgery and a follow-up of 10 years were to assess survival, functional outcomes, and the nature and frequency of complications. HYPOTHESIS Knee trauma or surgery before TKA increases the risk of complications and decreases implant survival. MATERIAL AND METHODS Two hundred and sixty-three patients (122 [47%] females and 141 [53%] males) underwent TKA between 2005 and 2009 at nine centres in France. Mean age at surgery was 61 years. The patients had knee osteoarthritis secondary to a fracture (n=66), osteotomy (n=131), or ligament injury (n=66). Mean time from trauma or surgery to TKA was 145 months (range, 72-219 months). RESULTS Major complications were infection (n=12, 4.5%), skin problems (n=8, 3%), and stiffness (n=8, 3%). Ten-year survival to implant exchange for any reason was 89%±2.8%. Flexion range increased by 2.5°±17° (p=0.02) to a mean of 110° (range, 30° to 140°); extension range increased by 4°±7° (p<0.001) to a mean of -1.19 (range, -20° to 0°). Of the 263 patients, 157 (60%) reported little or no pain at last follow-up. Mean postoperative hip-knee-ankle angle was 179°±3.2° (range, 171°-188°). CONCLUSION TKA performed after knee injury or surgery carries a risk of specific complications (infection, skin problems, and stiffness) and may have a lower survival rate compared to primary TKA. LEVEL OF EVIDENCE IV, retrospective cohort study.
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Affiliation(s)
- S Putman
- Département universitaire de chirurgie orthopédique et de traumatologie, hôpital Salengro, CHRU de Lille, rue Emile-laine, 59037 Lille, France.
| | - J-N Argenson
- Département de chirurgie orthopédique, hôpital Sainte-Marguerite, hôpital universitaire de Marseille, 270, boulevard Sainte-Marguerite, 13009 Marseille, France
| | - P Bonnevialle
- Département d'orthopédie et de traumatologie, hôpital P.P.-Riquet, place Baylac, 31052 Toulouse cedex, France
| | - M Ehlinger
- Service de chirurgie orthopédique et de traumatologie, hôpital de Hautepierre, 1, avenue Molière, 67098 Strasbourg cedex, France
| | - P Vie
- Clinique du Cèdre, 950, rue de la Haie, 76230 Bois-Guillaume, France
| | - S Leclercq
- CHP Saint-Martin, 18, rue des Roquemonts, 14000 Caen, France
| | - P Bizot
- Service de chirurgie orthopédique et traumatologique, hôpital Lariboisière, université Paris Diderot, 3, rue Amboise-Paré, 75010 Paris, France
| | - S Lustig
- Département de chirurgie orthopédique, centre Albert-Trillat, hôpital de la Croix-Rousse, 103, boulevard de la Croix-Rousse, 69004 Lyon, France
| | - S Parratte
- Département de chirurgie orthopédique, hôpital Sainte-Marguerite, hôpital universitaire de Marseille, 270, boulevard Sainte-Marguerite, 13009 Marseille, France
| | - N Ramdane
- EA 2694 - Santé publique : épidémiologie et qualité des soins, université de Lille, CHU de Lille, 59000 Lille, France
| | - M Colmar
- Hôpital privé des Côtes-d'Armor, 12, rue François-Jacob, 22198 Plerin, France
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- 56, rue Boissonade, 75014 Paris cedex, France
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Fessy MH, Putman S, Viste A, Isida R, Ramdane N, Ferreira A, Leglise A, Rubens-Duval B, Bonin N, Bonnomet F, Combes A, Boisgard S, Mainard D, Leclercq S, Migaud H. Erratum to "What are the risk factors for dislocation in primary total hip arthroplasty? A multicenter case-control study of 128 unstable and 438 stable hips" [Orthop. Traumatol. Surg. Res. 103 (2017) 663-8]. Orthop Traumatol Surg Res 2017; 103:1137. [PMID: 28923403 DOI: 10.1016/j.otsr.2017.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- M H Fessy
- Université de Lyon, 69622 Lyon, France; Service de chirurgie orthopédique et traumatologique, centre hospitalier Lyon Sud, hospices civils de Lyon, 165, chemin Grand-Revoyet, 69495 Pierre-Bénite cedex, France
| | - S Putman
- Service d'orthopédie C, hôpital Roger-Salengro, université de Lille Nord de France, centre hospitalier régional universitaire de Lille (CHRU de Lille), place de Verdun, 59000 Lille cedex, France; EA 2694, santé publique, épidémiologie et qualité des soins, université de Lille, CHU de Lille, 59000 Lille, France
| | - A Viste
- Université de Lyon, 69622 Lyon, France; Service de chirurgie orthopédique et traumatologique, centre hospitalier Lyon Sud, hospices civils de Lyon, 165, chemin Grand-Revoyet, 69495 Pierre-Bénite cedex, France
| | - R Isida
- Service d'orthopédie C, hôpital Roger-Salengro, université de Lille Nord de France, centre hospitalier régional universitaire de Lille (CHRU de Lille), place de Verdun, 59000 Lille cedex, France.
| | - N Ramdane
- EA 2694, santé publique, épidémiologie et qualité des soins, université de Lille, CHU de Lille, 59000 Lille, France
| | - A Ferreira
- Clinique du Parc-Lyon, 155 ter, boulevard de Stalingrad, 69006 Lyon, France
| | - A Leglise
- Service de chirurgie orthopédique et traumatologique, CHU La Milétrie, 2, rue de La Milétrie, 86000 Poitiers, France
| | - B Rubens-Duval
- Clinique universitaire de chirurgie orthopédique et de traumatologie du sport, hôpital Sud, CHU de Grenoble, 38130 Échirolles, France
| | - N Bonin
- Lyon-ortho-clinic, 29B, avenue des Sources, 69009 Lyon, France
| | - F Bonnomet
- Service de chirurgie orthopédique et de traumatologie, hôpital de Hautepierre, hôpitaux universitaires de Strasbourg, CHU Hautepierre, 1, avenue Molière, 67098 Strasbourg cedex, France
| | - A Combes
- Centre othopédique Flemming, 30C, avenue Fleming, 38300 Bourgoin-Jallieu, France
| | - S Boisgard
- Service de chirurgie orthopédique et traumatologique, hôpital Gabriel-Montpied, CHU de Clermont-Ferrand, 63000 Clermont-Ferrand, France
| | - D Mainard
- Service de chirurgie orthopédique et traumatologique, hôpitaux universitaires de Nancy, 29, avenue Maréchal-de-Lattre-de-Tassigny, 54000 Nancy, France
| | - S Leclercq
- CHP Saint-Martin, 18, rue des Roquemonts, 14050 Caen, France
| | - H Migaud
- Service d'orthopédie C, hôpital Roger-Salengro, université de Lille Nord de France, centre hospitalier régional universitaire de Lille (CHRU de Lille), place de Verdun, 59000 Lille cedex, France
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- Société française de chirurgie de la hanche et du genou (SFHG), 56, rue Boissonade, 75014 Paris, France
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Fessy MH, Putman S, Viste A, Isida R, Ramdane N, Ferreira A, Leglise A, Rubens-Duval B, Bonin N, Bonnomet F, Combes A, Boisgard S, Mainard D, Leclercq S, Migaud H. What are the risk factors for dislocation in primary total hip arthroplasty? A multicenter case-control study of 128 unstable and 438 stable hips. Orthop Traumatol Surg Res 2017. [PMID: 28629944 DOI: 10.1016/j.otsr.2017.05.014] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Dislocation after total hip arthroplasty (THA) is a leading reason for surgical revision. The risk factors for dislocation are controversial, particularly those related to the patient and to the surgical procedure itself. The differences in opinion on the impact of these factors stem from the fact they are often evaluated using retrospective studies or in limited patient populations. This led us to carry out a prospective case-control study on a large population to determine: 1) the risk factors for dislocation after THA, 2) the features of these dislocations, and 3) the contribution of patient-related factors and surgery-related factors. HYPOTHESIS Risk factors for dislocation related to the patient and procedure can be identified using a large case-control study. PATIENTS AND METHODS A multicenter, prospective case-control study was performed between January 1 and December 31, 2013. Four patients with stable THAs were matched to each patient with a dislocated THA. This led to 566 primary THA cases being included: 128 unstable, 438 stable. The primary matching factors were sex, age, initial diagnosis, surgical approach, implantation date and type of implants (bearing size, standard or dual-mobility cup). RESULTS The patients with unstable THAs were 67±12 [37-73]years old on average; there were 61 women (48%) and 67 men (52%). Hip osteoarthritis (OA) was the main reason for the THA procedure in 71% (91/128) of the unstable group. The dislocation was posterior in 84 cases and anterior in 44 cases. The dislocation occurred within 3 months of the primary surgery in 48 cases (38%), 3 to 12 months after in 23 cases (18%), 1 to 5years after in 20 cases (16%), 5 to 10years after in 17 cases (13%) and more than 10years later in 20 cases. The dislocation recurred within 6 months of the initial dislocation in 23 of the 128 cases (18%). The risk factors for instability were a high ASA score with an odds ratio (OR) of 1.93 (95% CI: 1.4-2.6), neurological disability (cognitive, motor or psychiatric disorders) with an OR of 3.9 (95% CI: 2.15-7.1), history of spinal disease (lumbar stenosis, spinal fusion, discectomy, scoliosis and injury sequelae) with an OR of 1.89 (95% CI: 1.0-3.6), unrepaired joint capsule (all approaches) with an OR of 4.1 (95% CI: 2.3-7.37), unrepaired joint capsule (posterior approach) with an OR of 6.0 (95% CI: 2.2-15.9), and cup inclination outside Lewinnek's safe zone (30°-50°) with OR of 2.4 (95% CI: 1.4-4.0). DISCUSSION This large comparative study isolated important patient-related factors for dislocation that surgeons must be aware of. We also found evidence that implanting the cup in 30° to 50° inclination has a major impact on preventing dislocation. LEVEL OF EVIDENCE Level III; case-control study.
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Affiliation(s)
- M H Fessy
- Clinique du Parc-Lyon, 155 ter, boulevard de Stalingrad, 69006 Lyon, France
| | - S Putman
- Service de chirurgie orthopédique et traumatologique, CHU La Milétrie, 2, rue de La Milétrie, 86000 Poitiers, France
| | - A Viste
- Clinique du Parc-Lyon, 155 ter, boulevard de Stalingrad, 69006 Lyon, France
| | - R Isida
- Service de chirurgie orthopédique et traumatologique, CHU La Milétrie, 2, rue de La Milétrie, 86000 Poitiers, France.
| | - N Ramdane
- Clinique universitaire de chirurgie orthopédique et de traumatologie du sport, hôpital Sud, CHU de Grenoble, 38130 Échirolles, France
| | - A Ferreira
- Lyon-Ortho-Clinic, 29B, avenue des Sources, 69009 Lyon, France
| | - A Leglise
- Service de chirurgie orthopédique et de traumatologie, CHU Hautepierre, hôpital de Hautepierre, hôpitaux universitaires de Strasbourg, 1, avenue Molière, 67098 Strasbourg cedex, France
| | - B Rubens-Duval
- Centre orthopédique Flemming, 30C, avenue Fleming, 38300 Bourgoin Jallieu, France
| | - N Bonin
- Service de chirurgie orthopédique et traumatologique, hôpital Gabriel-Montpied, CHU de Clermont-Ferrand, 63000 Clermont-Ferrand, France
| | - F Bonnomet
- Service de chirurgie orthopédique et traumatologique, hôpitaux universitaires de Nancy, 29, avenue Maréchal-de-Lattre-de-Tassigny, 54000 Nancy, France
| | - A Combes
- CHP Saint-Martin, 18, rue des Roquemonts, 14050 Caen, France
| | - S Boisgard
- Société française de chirurgie de la hanche et du genou (SFHG), 56, rue Boissonade, 75014 Paris, France
| | - D Mainard
- Service de chirurgie orthopédique et traumatologique, hôpitaux universitaires de Nancy, 29, avenue Maréchal-de-Lattre-de-Tassigny, 54000 Nancy, France
| | - S Leclercq
- CHP Saint-Martin, 18, rue des Roquemonts, 14050 Caen, France
| | - H Migaud
- Service de chirurgie orthopédique et traumatologique, CHU La Milétrie, 2, rue de La Milétrie, 86000 Poitiers, France
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Leclercq S, Matamoros S, Cani PD, Stärkel P, Bäckhed F, Tremaroli V, Windey K, Verbeke K, Delzenne NM, de Timary P. SY19-2GUT BACTERIAL DYSBIOSIS IS RELATED TO THE SEVERITY OF ALCOHOL-DEPENDENCE. Alcohol Alcohol 2015. [DOI: 10.1093/alcalc/agv076.79] [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: 11/13/2022] Open
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de Timary P, Leclercq S, De Saeger C, Delzenne N, Stärkel P. SY10-3BLOOD MONOCUCLEAR ACTIVATION AND ITS RELATIONSHIP TO COGNITIVE FUNCTION IN CHRONIC ALCOHOL ABUSERS. Alcohol Alcohol 2015. [DOI: 10.1093/alcalc/agv076.41] [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: 11/14/2022] Open
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Abdat F, Leclercq S, Cuny X, Tissot C. Extracting recurrent scenarios from narrative texts using a Bayesian network: application to serious occupational accidents with movement disturbance. Accid Anal Prev 2014; 70:155-66. [PMID: 24769246 DOI: 10.1016/j.aap.2014.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 05/21/2013] [Revised: 04/02/2014] [Accepted: 04/07/2014] [Indexed: 05/16/2023]
Abstract
A probabilistic approach has been developed to extract recurrent serious Occupational Accident with Movement Disturbance (OAMD) scenarios from narrative texts within a prevention framework. Relevant data extracted from 143 accounts was initially coded as logical combinations of generic accident factors. A Bayesian Network (BN)-based model was then built for OAMDs using these data and expert knowledge. A data clustering process was subsequently performed to group the OAMDs into similar classes from generic factor occurrence and pattern standpoints. Finally, the Most Probable Explanation (MPE) was evaluated and identified as the associated recurrent scenario for each class. Using this approach, 8 scenarios were extracted to describe 143 OAMDs in the construction and metallurgy sectors. Their recurrent nature is discussed. Probable generic factor combinations provide a fair representation of particularly serious OAMDs, as described in narrative texts. This work represents a real contribution to raising company awareness of the variety of circumstances, in which these accidents occur, to progressing in the prevention of such accidents and to developing an analysis framework dedicated to this kind of accident.
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Affiliation(s)
- F Abdat
- INRS - Working Life Department, 1 rue de Morvan, 54500 Vandoeuvre les Nancy, France
| | - S Leclercq
- INRS - Working Life Department, 1 rue de Morvan, 54500 Vandoeuvre les Nancy, France.
| | - X Cuny
- CNAM - Honorary Professor of Occupational Hygiene and Safety, 292 rue Saint-Martin, 75003 Paris, France
| | - C Tissot
- INRS - Library & Literature Watch Division, 65 boulevard Richard Lenoir, 75011 Paris, France
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Leclercq S, Matamoros S, Cani PD, Francois J, Starkel P, Windey K, Tremaroli V, Backhed F, Verbeke K, de Timary P, Delzenne NM. SY39-1 * INCREASED INTESTINAL PERMEABILITY IS RELATED TO GUT BACTERIAL DYSBIOSIS AND BEHAVIORAL MARKERS OF ADDICTION SEVERITY IN ALCOHOL-DEPENDENT SUBJECTS. Alcohol Alcohol 2014. [DOI: 10.1093/alcalc/agu052.161] [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: 11/14/2022] Open
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Leclercq S, Benoit JY, de Rosa JP, Tallier E, Leteurtre C, Girardin PH. Evora® chromium-cobalt dual mobility socket: results at a minimum 10 years' follow-up. Orthop Traumatol Surg Res 2013; 99:923-8. [PMID: 24176671 DOI: 10.1016/j.otsr.2013.07.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 07/01/2013] [Accepted: 07/11/2013] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The Evora chromium-cobalt alloy dual mobility socket claims to display a large articulation tribology different from that of stainless steel models, limiting the risk of intraprosthetic dislocation and wear. The present study reports a minimum of 10years' follow-up in a multicenter prospective series of 200 sockets previously reported on at 5years. HYPOTHESIS The use of chromium-cobalt in dual mobility sockets provides a low rate of failure at 10years, especially as regards to osteolysis and intraprosthetic dislocation. MATERIALS AND METHODS Two hundred hydroxyapatite-coated molded chromium-cobalt sockets without titanium interface were implanted without cement in 194 patients with a mean age of 70 years (range, 32-91 years). Clinical results were assessed on Postel Merle d'Aubigné and Harris scores, plain radiographs and survival analysis. RESULTS At a mean 11 years' follow-up (10-13 years), 56 patients had died and 31 were lost to follow-up. Four underwent surgical revision (3 femoral components, and 1 socket for migration at 9 years with complete disappearance of the hydroxyapatite). A total of 109 implants were analyzable in 107 patients with a mean age of 81 years (55-93 years). At follow-up, the mean Harris score was 90 (75-96) and the PMA score 16.3 (14-18). There were no cases of loosening (except for the case reoperated on at 9 years) and no acetabular radiolucency or cysts. There were 2 cases of non-evolutive femoral radiolucency and 10 of femoral granuloma, involving head size > 22 mm (P<0.0001) and a cemented titanium stem (P=0.004) as risk factors. There were no dislocations in the large or small articulation. Ten-year survival was 99% (95% CI: 97.3%-100%) with socket revision as censorship criterion. DISCUSSION The absence of dislocation in both small and large articulations confirmed the efficacy of the dual mobility concept and suggested an advantage for chromium-cobalt sockets in reducing the rate of intraprosthetic dislocation and preventing blockage of the large articulation by a better performance in the friction couple. Granulomas were associated with wear in cemented titanium stems and with heads greater than 22 mm in diameter. Ten-year survival was 99% (censorship criterion: revision for socket failure); there was, however, one case of socket loosening with disappearance of the hydroxyapatite, indicating that surveillance should be continued in this cohort.
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Affiliation(s)
- S Leclercq
- Centre Hospitalier Saint-Martin, 18, rue des Roquemonts, 14050 Caen, France.
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Leclercq S, de Timary P, Neyrinck A, Cani P, Delzenne N, Trabut J, Uzzan M, Thepot V, Jaffray P, Munteanu M, Mallet V, Sogni P, Pol S, Stickel F, Patsenker E, Sachse P, Matson J, Lanz C, Brenneisen R, Semmo N, Way MJ, Morgan M. O3 * FREE ORAL COMMUNICATIONS 3: ALCOHOL USE AND LIVER DISEASE. Alcohol Alcohol 2013. [DOI: 10.1093/alcalc/agt099] [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: 11/14/2022] Open
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Leclercq S, Lavigne M, Girard J, Chiron P, Vendittoli PA. Durom hip resurfacing system: retrospective study of 644 cases with an average follow-up of 34 months. Orthop Traumatol Surg Res 2013; 99:273-9. [PMID: 23562709 DOI: 10.1016/j.otsr.2012.10.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 09/25/2012] [Accepted: 10/15/2012] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The performance of second-generation metal-on-metal bearings has led to the reintroduction of hip resurfacing. The goal of this multicentre study was to evaluate the short-term radiological and clinical outcomes with the Durom hip resurfacing system. HYPOTHESIS The Durom hip-resurfacing system will have similar results to other hip resurfacing systems and traditional hip arthroplasty implants. MATERIALS AND METHODS In the four participating centers, 580 patients (406 men, 174 women) and 644 hips were included. The average patient age was 48 years (range 16-77). A posterolateral surgical approach was used in 357 cases; a Hardinge-type approach was used in 182 cases and a Rottinger-type approach in 105. RESULTS After an average follow-up of 34 months, 31 hips (4.8%) had been revised. The reasons for revision were the following: 10 (1.6%) neck fracture (seven with Rottinger operative approach, one with Hardinge approach and one with posterolateral approach); 12 (1.9%) femoral loosening (four with lateral approach and eight with posterolateral approach); four (0.6%) acetabular cup migration; three (0.5%) unexplained pain; one (0.2%) adverse reaction to metal debris; one (0.2%) infection. Four hips (0.6%) dislocated but without recurrence - all were operated using the Hardinge approach. The 613 hips that were not operated on again had satisfactory clinical results; the Merle d'Aubigné score was 17.2 (range 12-18) and the WOMAC score was 91 (range 20-100). The five-year survival rate was 91% (95% CI: 87-94%). Based on radiographs, the average cup inclination was 44.4° (range 30 to 70°). The femoral offset was reduced by an average of 2.4mm (-31 to 23 mm) and the leg length had increased by an average of 0.8mm (-15 to 19 mm) relative to the other side, which was prosthesis-free. None of the non-revised implants showed any signs of loosening. DISCUSSION This multicentre evaluation revealed that the Durom revision rate was slightly higher than the rate with other hip resurfacing systems and traditional total hip arthroplasty. Although the Durom system displayed excellent tribological performance, the differences relative to other implants may be attributed to the challenges associated with impaction, related to the geometry and design of the cup, and to precarious primary fixation. The choice of surgical exposure and implantation technique was an important factor in the survival of the implant. LEVEL OF PROOF Level IV - Retrospective study.
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Affiliation(s)
- S Leclercq
- St Martin Hospital Center, 18, rue Rocquemonts, 14000 Caen, France
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Mazenc A, Galtayries A, Seyeux A, Marcus P, Leclercq S. ToF-SIMS study of the behavior of thermally oxidized films formed on nickel-based 690 alloy in high-temperature water. SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.5060] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Mazenc
- Laboratoire de Physico-Chimie des Surfaces, CNRS-ENSCP (UMR 7045); Chimie ParisTech, 11 rue Pierre et Marie Curie; F-75005 Paris France
- EDF R&D; Les Renardières; Ecuelles BP 46 F-77818 Moret-sur-Loing France
| | - A. Galtayries
- Laboratoire de Physico-Chimie des Surfaces, CNRS-ENSCP (UMR 7045); Chimie ParisTech, 11 rue Pierre et Marie Curie; F-75005 Paris France
| | - A. Seyeux
- Laboratoire de Physico-Chimie des Surfaces, CNRS-ENSCP (UMR 7045); Chimie ParisTech, 11 rue Pierre et Marie Curie; F-75005 Paris France
| | - P. Marcus
- Laboratoire de Physico-Chimie des Surfaces, CNRS-ENSCP (UMR 7045); Chimie ParisTech, 11 rue Pierre et Marie Curie; F-75005 Paris France
| | - S. Leclercq
- EDF R&D; Les Renardières; Ecuelles BP 46 F-77818 Moret-sur-Loing France
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Trabut J, Thepot V, Nalpas B, Pol S, Mueller S, Millonig G, Stickel F, Longerich T, Schirmacher P, Seitz HK, Leclercq S, de Timary P, Delzenne N, Cani P, de Timary P, Pitel AL, Chetelat G, Le Berre AP, Desgranges B, Eustache F, Beaunieux H, Millonig G, Quin H, Glassen K, Linhart KB, Waldherr R, Buko V, Mueller S, Seitz HK. FREE ORAL COMMUNICATIONS 2: ALCOHOL AND LIVER--CLINICAL RESEARCH * O2.1 * RAPID DECLINE OF LIVER STIFFNESS WITH ALCOHOL WITHDRAWAL IN HEAVY DRINKERS. Alcohol Alcohol 2011. [DOI: 10.1093/alcalc/agr094] [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: 11/14/2022] Open
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Meille V, Trojak B, Garrouty R, Chauvet-Gélinier JC, Leclercq S, Bonin B. P20.4 Should the 5 cm method be re-examined in rTMS? Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60526-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Leclercq S, Gueugnon F, Boutin B, Guillot F, Blanquart C, Rogel A, Padieu M, Pouliquen D, Fonteneau JF, Gregoire M. A 5-aza-2'-deoxycytidine/valproate combination induces cytotoxic T-cell response against mesothelioma. Eur Respir J 2011; 38:1105-16. [DOI: 10.1183/09031936.00081310] [Citation(s) in RCA: 28] [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: 11/05/2022]
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Legendre F, Heuze A, Boukerrouche K, Leclercq S, Boumediene K, Galera P, Domagala F, Pujol JP, Ficheux H. Rhein, the metabolite of diacerhein, reduces the proliferation of osteoarthritic chondrocytes and synoviocytes without inducing apoptosis. Scand J Rheumatol 2009; 38:104-11. [PMID: 19274517 DOI: 10.1080/03009740802421996] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE The aim of this study was to determine the effects of pharmacologically relevant concentrations of rhein (1,8-dihydroxy-3-carboxyanthraquinone) on the cell proliferation rate of human chondrocytes and synoviocytes. METHODS Cultures of human osteoarthritic synoviocytes and chondrocytes were incubated with 10(-6), 10(-5), and 10(-4) M rhein. [3H]thymidine incorporation was used to determine rhein proliferative effects after incubation periods of 24 h, 48 h, and 1 week. The cytotoxicity of the drug was assayed with a nonradioactive assay kit. Nuclear extracts were used to detect variations in cell-cycle proteins (p21, p27, and cyclin D1) by Western blotting. The effect of rhein on apoptosis was investigated by measurement of caspase-3/7 activity and DNA fragmentation. RESULTS Rhein was found to downregulate the proliferation rate of both chondrocytes and synoviocytes, two-fold for 10(-5) M rhein and five- to six-fold for 10(-4) M rhein. No cytotoxicity of the drug was observed. Rhein (10(-4) M) decreased caspase-3/7 activity and did not induce DNA fragmentation. Western blots showed that 10(-4) M rhein increased the expression of p21 and/or p27, but not that of cyclin D1. CONCLUSIONS Rhein has previously been shown to reduce the interleukin (IL)-1beta deleterious effects on osteoarthritis (OA) cartilage through inhibition of the expression of degrading enzymes. Here, rhein was also found to inhibit proliferation of both synoviocytes and chondrocytes, suggesting that the drug may decrease the development of the inflammatory synovial tissue that accompanies joint pathologies. Both its anti-catabolic and anti-proliferative effects may explain its beneficial effect in the treatment of joint diseases.
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Affiliation(s)
- F Legendre
- Laboratory of Extracellular Matrix and Pathology, University of Caen
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Derosier C, Leclercq S, Rabardel P, Langa P. Studying work practices: a key factor in understanding accidents on the level triggered by a balance disturbance. Ergonomics 2008; 51:1926-43. [PMID: 19034785 DOI: 10.1080/00140130802567061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Accidents on the level (AOL) rank second amongst the most numerous and serious occupational accidents with days lost in France and are a major health and safety problem in every sector of activity. The case study described in this paper was conducted at a metallurgical company with 300 employees. The aims of this work were dual: 1) to extend the general knowledge required for preventing these accidents; 2) to propose prevention measures to this company. Existing data on company occupational accidents were gathered and analysed to identify a work situation that appeared likely to cause AOL. This work situation was analysed in detail. Several risk factors were identified within this work situation, by way of interviews with 12 operators. These risk factors concerned various dimensions of the work situation, particularly its physical dimension (e.g. templates structure) and organisational dimension (e.g. parts availability). Interviews were conducted, focusing on risk factors perceived by operators and involving allo-confrontations based on accounts of four AOL occurring in this situation. Allo-confrontations were interviews confronting operators with a risk occupational situation that was accidental for one of their colleagues, the latter being absent from the interview. Results highlighted the fact that the work practices implemented are key factors in understanding these accidents. This study underlines the role of work practices in AOL causality and prevention. It also provides explanations associated with various work situation dimensions involving adoption of more or less safe work practices. AOL are serious and frequent in occupational situations. Injury claims analysis and interviews in an industrial company emphasise the specific characteristics of an occupational situation and of prevention actions forming the basis of an intervention. The need for a better understanding of factors affecting work practice is highlighted in relation to research.
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Affiliation(s)
- C Derosier
- French National Research and Safety Institute (INRS), Working Life Department, Biomechanics and Ergonomics Laboratory, Vandoeuvre, France.
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Molinier F, Laffosse JM, Tricoire JL, Lafont C, Dubrana F, Chauveaux D, Levai JP, Leclercq S, Laffargue P, Deroche P, Laroche M, Charrier J, Puget J. [Wich total hip prosthesis for patients older than 75 years?]. Rev Chir Orthop Reparatrice Appar Mot 2008; 94 Suppl:S211-S214. [PMID: 18928817 DOI: 10.1016/j.rco.2008.07.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- F Molinier
- CHU de Rangueil, avenue Jean-Poulhes, TSA 5032, 31059 Toulouse cedex 09, France
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Leclercq S, Benoit JY, de Rosa JP, Euvrard P, Leteurtre C, Girardin P. Results of the Evora dual-mobility socket after a minimum follow-up of five years. ACTA ACUST UNITED AC 2008; 94:e17-22. [PMID: 19070709 DOI: 10.1016/j.rco.2007.10.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2007] [Indexed: 12/12/2022]
Abstract
PURPOSE OF THE STUDY Dislocation is a well-known complication of total hip arthroplasty. The risk can be reduced to one or two cases per thousand using a dual-mobility cup. The survival rate achieved with the Bousquet implant is 95% at 10 years. The complications with this implant are early mobilization and inguinal pain. An overly-large cup and insufficient primary and secondary fixation can be implicated. The design of the original implant was later modified to limit these early complications. The purpose of this study was to check the validity of these design changes. PATIENTS AND METHODS The chromium-cobalt moulded cementless cup was used. The outer surface of this cup presents large geometric striations and is coated with hydroxyapatite. The cup has the shape of a 180 degrees half sphere and a posterior wall prolongation measuring 6.5mm. Three mechanisms were used for the primary fixation: an asymmetrical growth ring, four anchorage stems and a superior screw. Two hundred cementless cups were implanted in 194 patients. The femoral piece was a Charnley stainless-steel implant (n=139), a titanium SEM implant (n=59) or another implant (n=12). Cement was used for femoral fixation in 193 implantations. The series included 97 women and 103 men with osteoarthritis (n=180), necrosis (n=16) and surgery for fracture and primary arthroplasty (n=9). The Harris and Postel-Merle-d'Aubigné scores were noted. Eight radiographic criteria were analyzed to assess the position of the cup and the radiological course of the interface. RESULTS The mean follow-up was six years and the minimum was five years. The mean age at surgery was 70 years (range, 32 to 91). At last follow-up, 17 patients had died, eight were lost to follow-up and five were bedridden. Three patients underwent revision surgery. Thus, this analysis included 170 prostheses followed for more than five years (mean, six years; range, five to seven years). The Harris score improved from 48 to 92 and the Postel-Merle-d'Aubigné score from 2/5/4 to 5.8/5.9/5.5 (range, 4 to 6/5 to 6/1 to 6). None of the patients complained of anterior pain during active hip flexion in supine position (related to ilio-psoas irritation). Cup inclination was 46 degrees on average (range, 62 to 22 degrees ). Medialization, lateralization or ascension greater than 10mm from the center of rotation was not observed on the postoperative films. At the last follow-up, no measurable mobilization or migration could be identified on plain X-rays. Radiolucent lines, condensations and bony defects around the cup, when visible postoperatively, were not found on the last follow-up X-rays. There were two cemented femoral pieces that developed a radiolucent line in the nonspecific metaphyseal area. There were no cases of granuloma and no cam effect. Three patients underwent revision for femoral loosening, fracture of the femur below the prosthesis and hematogenous infection. There were no cases of dislocation. DISCUSSION Changing the design of the implant to modify its volume, material and primary fixation has eliminated the early mobilizations and inguinal pain described for the original Bousquet cup. These options have not had any deleterious effect on prosthesis stability. The question of long-term wear remains an important problem and requires optimization: a neck as thin as possible, optimized surfacing, elimination of laser marks, extraction leads and head skirts.
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Affiliation(s)
- S Leclercq
- Centre Hospitalier Privé Saint-Martin, Caen, France.
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Baugé C, Attia J, Leclercq S, Pujol JP, Galéra P, Boumédiene K. Interleukin-1beta up-regulation of Smad7 via NF-kappaB activation in human chondrocytes. ACTA ACUST UNITED AC 2008; 58:221-6. [PMID: 18163503 DOI: 10.1002/art.23154] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE We have previously shown that interleukin-1beta (IL-1beta) impairs transforming growth factor beta (TGFbeta) signaling through TGFbeta receptor type II (TGFbetaRII) down-regulation and Smad7 up-regulation. This mechanism could account for the reduced responsiveness of osteoarthritic chondrocytes to TGFbeta and the cartilage breakdown linked to this disease. The aim of this study was to investigate the molecular mechanism underlying the IL-1beta-induced stimulation of Smad7 in human articular chondrocytes. METHODS Human articular chondrocytes were treated with IL-1beta in the presence of TGFbeta1, pyrrolidine dithiocarbamate (a repressor of the NF-kappaB pathway), or cycloheximide. Then, steady-state messenger RNA and protein levels were estimated by real-time reverse transcription-polymerase chain reaction and immunocytology. In addition, transient transfections of p65 expression vector or p65-targeted short hairpin RNA were performed to define the effect of NF-kappaB on Smad7 expression. RESULTS TGFbetaRII overexpression restored the TGFbeta response of human articular chondrocytes. However, this effect was transient, implying that a secondary mechanism was responsible for the alteration of the TGFbeta response with long-term exposure to IL-1beta. Moreover, IL-1beta caused a late induction of the inhibitory Smad7. This effect was direct, since it did not require de novo synthesis. In addition, we established, by experiments with gain/loss of function, that the up-regulation of Smad7 by IL-1beta is mediated through the NF-kappaB pathway, especially the p65 subunit. CONCLUSION These findings clarify the regulatory process of IL-1beta on Smad7 expression. Understanding the molecular basis of IL-1beta induction of Smad7 and the reduction of chondrocyte responsiveness to TGFbeta provides new insights into the molecular mechanisms of osteoarthritis and may facilitate the identification of novel approaches for its treatment.
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Affiliation(s)
- C Baugé
- University of Caen Lower Normandy, Faculty of Medicine, Caen, France
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Baugé C, Beauchef G, Leclercq S, Kim SJ, Pujol JP, Galéra P, Boumédiene K. NFkappaB mediates IL-1beta-induced down-regulation of TbetaRII through the modulation of Sp3 expression. J Cell Mol Med 2007; 12:1754-66. [PMID: 18053089 PMCID: PMC3918091 DOI: 10.1111/j.1582-4934.2007.00173.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2022] Open
Abstract
We previously showed that interleukin-1beta (IL-1beta) down-regulation of type II TGFbeta receptor (TbetaRII) involves NFkappaB pathway and requires de novo synthesis of a yet unknown protein. Here, we demonstrate that this effect is mediated through Sp1 site located at position -25 of human TbetaRII promoter. Inhibition of transcription factors binding (decoy oligonucleotides or mithramycin) abolished IL-1beta effect. EMSA and ChIP revealed that this treatment induced Sp3 binding to cis-sequence whereby IL-1beta exerts its transcriptional effects whereas it decreased that of Sp1. Moreover, although the cytokine did not modulate Sp1 expression, it increased that of Sp3 via NFkappaB pathway. Experiments of gain and loss of function clearly showed that Sp3 inhibited TbetaRII expression whereas its silencing abolished IL-1beta effect. In addition, both Sp1 and Sp3 were found to interact with NFkappaB, which therefore may indirectly interact with TbetaRII pro moter. Altogether, these data suggest that IL-1beta decreases TbetaRII expression by inducing Sp3 via NFkappaB and its binding on core promote at the expense of Sp1, which could explain the loss of cell responsiveness in certain conditions. These findings bring new insights in the knowledge of the interference between two antagonistic transduction pathways involved in multiple physiopathological processes.
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Affiliation(s)
- C Baugé
- Laboratory of Connective Tissue Biochemistry, University of Caen, Caen, France
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