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Romero R, Barra F, Reich M, Ojeda A, Tapia MJ, Del Real I, Simon A. Contrasting magma chemistry in the Candelaria IOCG district caused by changing tectonic regimes. Sci Rep 2024; 14:10793. [PMID: 38734754 PMCID: PMC11088621 DOI: 10.1038/s41598-024-61489-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 05/06/2024] [Indexed: 05/13/2024] Open
Abstract
Iron oxide-copper-gold (IOCG) deposits are a vital source of copper and critical elements for emerging clean technologies. Andean-type IOCG deposits form in continental arcs undergoing extension, and they have a temporal relationship with magmatism although they do not exhibit a close spatial relation with the causative intrusions. The processes required to form IOCG deposits and their potential connections to iron oxide-apatite (IOA)-type mineralization remain poorly constrained, as well as the characteristics of magmatism linked to both deposit types. Here we combine zircon U-Pb geochronology with zircon trace element geochemistry of intrusive rocks associated with the Candelaria deposit, one of the world's largest IOCG deposits, to unravel distinctive signatures diagnostic of magmatic fertility. Our results reveal a marked transition in the geochemistry of intrusions in the Candelaria district, characterized by changes in the redox state, water content and temperature of magmas over time. The oldest magmatic stage (~ 128-125 Ma), prior to the formation of the Candelaria deposit, was characterized by zircon Eu/Eu* ratios of 0.20-0.42, and redox conditions of ΔFMQ - 0.4 to + 1.0. The earliest magmatic stage related to the formation of Fe-rich mineralization at Candelaria (118-115 Ma) exhibits low zircon Eu/Eu* ratios (0.09-0.18), low oxygen fugacity values (ΔFMQ ~- 1.8 to + 0.2) and relatively high crystallization temperatures. In contrast, the youngest stage at ~ 111-108 Ma shows higher zircon Eu/Eu* (~ 0.37-0.69), higher oxygen fugacity values (ΔFMQ ~ + 0.4 to + 1.3) and a decrease in crystallization temperatures, conditions that are favorable for the transport and precipitation of sulfur and chalcophile elements. We conclude that Candelaria was formed through two distinct ore-forming stages: the first associated with a reduced, high temperature, water-poor magma developed under a low tectonic stress, followed by a more oxidized, water-rich, and low temperature magmatic event related to a compressional regime. The first event led to Fe-rich and S-poor IOA-type mineralization, while the second event with geochemical signatures similar to those of porphyry copper systems, generated the Cu- and S-rich mineralization. This late stage overprinted preexisting IOA mineralization resulting in the formation of the giant Candelaria IOCG deposit.
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Affiliation(s)
- R Romero
- Department of Geology and Millennium Nucleus for Metal Tracing Along Subduction, FCFM, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile.
| | - F Barra
- Department of Geology and Millennium Nucleus for Metal Tracing Along Subduction, FCFM, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile
| | - M Reich
- Department of Geology and Millennium Nucleus for Metal Tracing Along Subduction, FCFM, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile
| | - A Ojeda
- Department of Geology and Millennium Nucleus for Metal Tracing Along Subduction, FCFM, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile
| | - M J Tapia
- Department of Geology and Millennium Nucleus for Metal Tracing Along Subduction, FCFM, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile
| | - I Del Real
- Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Avenida Eduardo Morales Miranda, Edificio Emilio Pugín, Valdivia, Chile
| | - A Simon
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
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2
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Simon A, Barradas NP, Jeynes C, Romolo FS. Addressing forensic science challenges with nuclear analytical techniques - A review. Forensic Sci Int 2024; 358:111767. [PMID: 37385904 DOI: 10.1016/j.forsciint.2023.111767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 06/08/2023] [Accepted: 06/16/2023] [Indexed: 07/01/2023]
Abstract
We review the application of Nuclear Analytical Techniques (NATs) to forensic problems for the first time. NATs include neutron activation analysis (NAA), carried out in nuclear reactors for elemental analysis; accelerator-based techniques, mainly Ion Beam Analysis (IBA) for elemental and molecular analysis; and Accelerator Mass Spectrometry (AMS) for dating of traces of forensic interest by "radiocarbon dating" and other related methods. Applications include analysis of drugs of abuse, food fraud, counterfeit medicine, gunshot residue, glass fragments, forgery of art objects and documents, and human material. In some applications only the NATs are able to provide relevant information for forensic purposes. This review not only includes a wide collection of forensic applications, but also illustrates the wide availability worldwide of NATs, opening up opportunities for an increased use of NATs in routine forensic casework.
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Affiliation(s)
- A Simon
- International Atomic Energy Agency, Vienna, Austria.
| | | | - C Jeynes
- University of Surrey Ion Beam Centre, Guildford, England, UK
| | - F S Romolo
- Università degli Studi di Bergamo, Bergamo, Italy
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Bruyneel A, Miesse I, Mathieu D, Djuidjé Yuemo C, Simon A. Prevalence and factors associated with methicillin-resistant Staphylococcus aureus colonization on admission to geriatric care units: impact on screening practices. J Hosp Infect 2024; 146:109-115. [PMID: 38309666 DOI: 10.1016/j.jhin.2024.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/04/2024] [Accepted: 01/14/2024] [Indexed: 02/05/2024]
Abstract
OBJECTIVES Universal screening for methicillin-resistant Staphylococcus aureus (MRSA) entails additional costs, and there is no consensus for targeted screening for high-risk units. The aims of this study were to determine the prevalence of MRSA in geriatric care units, and to identify the factors associated with MRSA colonization on admission. METHODS This retrospective case-control study (1:1) in the geriatric care unit of six Belgian hospitals covered the period from 1st January 2021 to 31st December 2022. Cases were patients with a positive MRSA screening result within 48 h of admission to the geriatric care unit, and controls were patients with a negative screening result. RESULTS In total, 556 patients were included in this study (278 in each group). Prevalence per 100 admissions for the total sample was 2.3 [95% confidence interval (CI) 2.2-2.6]. Significant multi-variate factors associated with MRSA carriage on admission were: history of MRSA, nursing home origin, and chronic skin lesions. Applying these three factors would give an area under the receiver operating characteristic (ROC) curve of 0.73 (95% CI 0.71-0.77), and would allow screening to be carried out in only 55.4% of cases (95% CI 51.2-59.6%). CONCLUSIONS Using these factors as screening criteria in geriatric care units could significantly reduce the number of patients screened for MRSA, while maintaining satisfactory sensitivity and specificity.
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Affiliation(s)
- A Bruyneel
- Hospital Outbreak Support Team, Réseau Hospitalier Universitaire Cœur de Wallonie, Belgium; Health Economics, Hospital Management and Nursing Research Department, School of Public Health, Université Libre de Bruxelles, Belgium.
| | - I Miesse
- Hospital Outbreak Support Team, Réseau Hospitalier Universitaire Cœur de Wallonie, Belgium
| | - D Mathieu
- Hospital Outbreak Support Team, Réseau Hospitalier Universitaire Cœur de Wallonie, Belgium; Infectiology - Infection Prevention and Control Department, CHU Tivoli, La Louviere, Belgium
| | | | - A Simon
- Infection Control Team, CHU HELORA, Belgium
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Hammel M, Touchard F, Burioli EAV, Paradis L, Cerqueira F, Chailler E, Bernard I, Cochet H, Simon A, Thomas F, Destoumieux-Garzón D, Charrière GM, Bierne N. Marine transmissible cancer navigates urbanized waters, threatening spillover. Proc Biol Sci 2024; 291:20232541. [PMID: 38378149 PMCID: PMC10878816 DOI: 10.1098/rspb.2023.2541] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/22/2024] [Indexed: 02/22/2024] Open
Abstract
Inter-individual transmission of cancer cells represents a unique form of microparasites increasingly reported in marine bivalves. In this study, we sought to understand the ecology of the propagation of Mytilus trossulus Bivalve Transmissible Neoplasia 2 (MtrBTN2), a transmissible cancer affecting four Mytilus mussel species worldwide. We investigated the prevalence of MtrBTN2 in the mosaic hybrid zone of M. edulis and M. galloprovincialis along the French Atlantic coast, sampling contrasting natural and anthropogenic habitats. We observed a similar prevalence in both species, probably due to the spatial proximity of the two species in this region. Our results showed that ports had higher prevalence of MtrBTN2, with a possible hotspot observed at a shuttle landing dock. No cancer was found in natural beds except for two sites close to the hotspot, suggesting spillover. Ports may provide favourable conditions for the transmission of MtrBTN2, such as high mussel density, stressful conditions, sheltered and confined shores or buffered temperatures. Ships may also spread the disease through biofouling. Our results suggest ports may serve as epidemiological hubs, with maritime routes providing artificial gateways for MtrBTN2 propagation. This highlights the importance of preventing biofouling on docks and ship hulls to limit the spread of marine pathogens hosted by fouling species.
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Affiliation(s)
- M. Hammel
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - F. Touchard
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - E. A. V. Burioli
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - L. Paradis
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - F. Cerqueira
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - E. Chailler
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | | | - H. Cochet
- Cochet Environnement, 56550 Locoal, France
| | - A. Simon
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - F. Thomas
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - D. Destoumieux-Garzón
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - G. M. Charrière
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - N. Bierne
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
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Leboucher H, Simon A, Rapacioli M. Erratum: Structures and stabilities of PAH clusters solvated by water aggregates: The case of the pyrene dimer [J. Chem. Phys. 158, 114308 (2023)]. J Chem Phys 2023; 159:209903. [PMID: 38010337 DOI: 10.1063/5.0177039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 10/16/2023] [Indexed: 11/29/2023] Open
Affiliation(s)
- H Leboucher
- Laboratoire de Chimie et Physique Quantiques LCPQ/FERMI, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - A Simon
- Laboratoire de Chimie et Physique Quantiques LCPQ/FERMI, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - M Rapacioli
- Laboratoire de Chimie et Physique Quantiques LCPQ/FERMI, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
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Simon A, Mercier AE, Chan G, Williamson W. [Multimodal imaging of Perifoveal Exudative Vascular Anomalous Complex (PEVAC)]. J Fr Ophtalmol 2023; 46:968-971. [PMID: 37481453 DOI: 10.1016/j.jfo.2023.02.010] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 02/09/2023] [Indexed: 07/24/2023]
Affiliation(s)
- A Simon
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France.
| | - A-E Mercier
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France
| | - G Chan
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France
| | - W Williamson
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France
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Simon A, Mercier AE, Chan G, Williamson W. [Cystic maculopathy of the inner nuclear layer in a glaucoma patient: Case report]. J Fr Ophtalmol 2023; 46:821-825. [PMID: 37088622 DOI: 10.1016/j.jfo.2022.12.037] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/18/2022] [Accepted: 12/20/2022] [Indexed: 04/25/2023]
Affiliation(s)
- A Simon
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France.
| | - A-E Mercier
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France
| | - G Chan
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France
| | - W Williamson
- Service d'ophtalmologie, centre hospitalier de Pau, 4, boulevard Hauterive, 64000 Pau, France
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Magain N, Miadlikowska J, Goffinet B, Goward T, Pardo-De la Hoz C, Jüriado I, Simon A, Mercado-Díaz J, Barlow T, Moncada B, Lücking R, Spielmann A, Canez L, Wang L, Nelson P, Wheeler T, Lutzoni F, Sérusiaux E. High species richness in the lichen genus Peltigera ( Ascomycota, Lecanoromycetes): 34 species in the dolichorhizoid and scabrosoid clades of section Polydactylon, including 24 new to science. Persoonia 2023; 51:1-88. [PMID: 38665978 PMCID: PMC11041898 DOI: 10.3767/persoonia.2023.51.01] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 10/10/2022] [Indexed: 04/28/2024]
Abstract
Applying molecular methods to fungi establishing lichenized associations with green algae or cyanobacteria has repeatedly revealed the existence of numerous phylogenetic taxa overlooked by classical taxonomic approaches. Here, we report taxonomical conclusions based on multiple species delimitation and validation analyses performed on an eight-locus dataset that includes world-wide representatives of the dolichorhizoid and scabrosoid clades in section Polydactylon of the genus Peltigera. Following the recommendations resulting from a consensus species delimitation approach and additional species validation analysis (BPP) performed in this study, we present a total of 25 species in the dolichorhizoid clade and nine in the scabrosoid clade, including respectively 18 and six species that are new to science and formally described. Additionally, one combination and three varieties (including two new to science) are proposed in the dolichorhizoid clade. The following 24 new species are described: P. appalachiensis, P. asiatica, P. borealis, P. borinquensis, P. chabanenkoae, P. clathrata, P. elixii, P. esslingeri, P. flabellae, P. gallowayi, P. hawaiiensis, P. holtanhartwigii, P. itatiaiae, P. hokkaidoensis, P. kukwae, P. massonii, P. mikado, P. nigriventris, P. orientalis, P. rangiferina, P. sipmanii, P. stanleyensis, P. vitikainenii and P. willdenowii; the following new varieties are introduced: P. kukwae var. phyllidiata and P. truculenta var. austroscabrosa; and the following new combination is introduced: P. hymenina var. dissecta. Each species from the dolichorhizoid and scabrosoid clades is morphologically and chemically described, illustrated, and characterised with ITS sequences. Identification keys are provided for the main biogeographic regions where species from the two clades occur. Morphological and chemical characters that are commonly used for species identification in the genus Peltigera cannot be applied to unambiguously recognise most molecularly circumscribed species, due to high variation of thalli formed by individuals within a fungal species, including the presence of distinct morphs in some cases, or low interspecific variation in others. The four commonly recognised morphospecies: P. dolichorhiza, P. neopolydactyla, P. pulverulenta and P. scabrosa in the dolichorhizoid and scabrosoid clades represent species complexes spread across multiple and often phylogenetically distantly related lineages. Geographic origin of specimens is often helpful for species recognition; however, ITS sequences are frequently required for a reliable identification. Citation: Magain N, Miadlikowska J, Goffinet B, et al. 2023. High species richness in the lichen genus Peltigera (Ascomycota, Lecanoromycetes): 34 species in the dolichorhizoid and scabrosoid clades of section Polydactylon, including 24 new to science. Persoonia 51: 1-88. doi: 10.3767/persoonia.2023.51.01.
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Affiliation(s)
- N. Magain
- Evolution and Conservation Biology, InBioS Research Center, University of Liège, Sart Tilman B22, Quartier vallée 1, Chemin de la vallée 4, B-4000 Liège, Belgium
- Department of Biology, Duke University, Box 90338, Durham, North Carolina, 27708 USA
| | - J. Miadlikowska
- Department of Biology, Duke University, Box 90338, Durham, North Carolina, 27708 USA
| | - B. Goffinet
- Ecology and Evolutionary Biology, Unit 3043, University of Connecticut, 75 North Eagleville road, Storrs CT, 06269-3043 USA
| | - T. Goward
- Beaty Biodiversity Museum, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - C.J. Pardo-De la Hoz
- Department of Biology, Duke University, Box 90338, Durham, North Carolina, 27708 USA
| | - I. Jüriado
- Institute of Ecology and Earth Sciences, University of Tartu, J. Liivi 2, Tartu 50409, Estonia; Institute of Agricultural & Environmental Sciences, Estonian University of Life Sciences, Fr. R. Kreutzwaldi 5, Tartu 51006, Estonia
| | - A. Simon
- Evolution and Conservation Biology, InBioS Research Center, University of Liège, Sart Tilman B22, Quartier vallée 1, Chemin de la vallée 4, B-4000 Liège, Belgium
- Ecology and Evolutionary Biology, Unit 3043, University of Connecticut, 75 North Eagleville road, Storrs CT, 06269-3043 USA
| | - J.A. Mercado-Díaz
- Science & Education, The Field Museum, 1400 S. Lake Shore Drive, Chicago, Illinois, 60605 USA
| | - T. Barlow
- Department of Biology, Duke University, Box 90338, Durham, North Carolina, 27708 USA
| | - B. Moncada
- Licenciatura en Biología, Universidad Distrital Francisco José de Caldas, Cra. 4 No. 26B-54, Torre de Laboratorios, Herbario, Bogotá, Colombia; current address: Botanischer Garten, Freie Universität Berlin, Königin-Luise-Straße 6–8, 14195 Berlin, Germany
| | - R. Lücking
- Botanischer Garten, Freie Universität Berlin, Königin-Luise-Straße 6–8, 14195 Berlin, Germany
| | - A. Spielmann
- Laboratòrio de Botanica / Liquenologia, Instituto de Biociencias, Universidade Federal de Mato Grosso do Sul, Campo Grande – MS, Brazil
| | - L. Canez
- Laboratòrio de Botanica / Liquenologia, Instituto de Biociencias, Universidade Federal de Mato Grosso do Sul, Campo Grande – MS, Brazil
| | - L.S. Wang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, CAS, Kunming 650201, China
| | - P. Nelson
- Natural and Behavioral Sciences Division, University of Maine – Fort Kent, Fort Kent, ME, USA
| | - T. Wheeler
- Division of Biological Sciences, University of Montana, Missoula, MT, USA
| | - F. Lutzoni
- Department of Biology, Duke University, Box 90338, Durham, North Carolina, 27708 USA
| | - E. Sérusiaux
- Evolution and Conservation Biology, InBioS Research Center, University of Liège, Sart Tilman B22, Quartier vallée 1, Chemin de la vallée 4, B-4000 Liège, Belgium
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Leboucher H, Simon A, Rapacioli M. Structures and stabilities of PAH clusters solvated by water aggregates: The case of the pyrene dimer. J Chem Phys 2023; 158:114308. [PMID: 36948831 DOI: 10.1063/5.0139482] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
Although clusters made of polycyclic aromatic hydrocarbon and water monomers are relevant objects in both atmospheric and astrophysical science, little is known about their energetic and structural properties. In this work, we perform global explorations of the potential energy landscapes of neutral clusters made of two pyrene units and one to ten water molecules using a density-functional-based tight-binding (DFTB) potential followed by local optimizations at the density-functional theory level. We discuss the binding energies with respect to various dissociation channels. It shows that cohesion energies of the water clusters interacting with a pyrene dimer are larger than those of the pure water clusters, reaching for the largest clusters an asymptotic limit similar to that of pure water clusters and that, although the hexamer and octamer can be considered magic numbers for isolated water clusters, it is not the case anymore when they are interacting with a pyrene dimer. Ionization potentials are also computed by making use of the configuration interaction extension of DFTB, and we show that in cations, the charge is mostly carried by the pyrene molecules.
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Affiliation(s)
- H Leboucher
- Laboratoire de Chimie et Physique Quantiques LCPQ/FERMI, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - A Simon
- Laboratoire de Chimie et Physique Quantiques LCPQ/FERMI, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - M Rapacioli
- Laboratoire de Chimie et Physique Quantiques LCPQ/FERMI, UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
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Verhulsel M, Simon A, Bernheim-Dennery M, Gannavarapu VR, Gérémie L, Ferraro D, Krndija D, Talini L, Viovy JL, Vignjevic DM, Descroix S. Correction: Developing an advanced gut on chip model enabling the study of epithelial cell/fibroblast interactions. Lab Chip 2023; 23:1713. [PMID: 36852524 PMCID: PMC10013335 DOI: 10.1039/d3lc90020g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
Correction for 'Developing an advanced gut on chip model enabling the study of epithelial cell/fibroblast interactions' by Marine Verhulsel et al., Lab Chip, 2021, 21, 365-377, https://doi.org/10.1039/d0lc00672f.
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Affiliation(s)
- Marine Verhulsel
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Anthony Simon
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Moencopi Bernheim-Dennery
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | - Venkata Ram Gannavarapu
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Lauriane Gérémie
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | - Davide Ferraro
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | - Denis Krndija
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Laurence Talini
- CNRS, UMR 7615, ESPCI Paris, UPMC, Sorbonne-Universités, PSL Research University, F-75005 Paris, France
| | - Jean-Louis Viovy
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | | | - Stéphanie Descroix
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
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Colom J, Freitas D, Simon A, Khokhlova E, Mazhar S, Buckley M, Phipps C, Deaton J, Brodkorb A, Rea K. Acute physiological effects following Bacillus subtilis DE111 oral ingestion - a randomised, double blinded, placebo-controlled study. Benef Microbes 2023; 14:31-44. [PMID: 36790091 DOI: 10.3920/bm2022.0081] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Previous studies using ileostomy samples from study participants demonstrated that the spore-forming probiotic Bacillus subtilis DE111® can germinate in the small intestine as early as 4 hours after ingestion. Metabolomics, proteomics and sequencing technologies, enabled further analysis of these samples for the presence of hypoglycaemic, hypolipidemic, antioxidant, anti-inflammatory and antihypertensive molecules. In the DE111 treatment group, the polyphenols trigonelline and 2,5-dihydroxybenzoic acid, orotic acid, the non-essential amino acid cystine and the lipokine 12,13-diHome were increased. DE111 also reduced acetylcholine levels in the ileostomy samples, and increased the expression of leucocyte recruiting proteins, antimicrobial peptides and intestinal alkaline phosphatases of the brush border in the small intestine. The combination of B. subtilis DE111 and the diet administered during the study increased the expression of the proteins phosphodiesterase ENPP7, ceramidase ASAH2 and the adipokine Zn-alpha-2-glycoprotein that are involved in fatty acid and lipid metabolism. Acute B. subtilis DE111 ingestion had limited detectable effect on the microbiome, with the main change being its increased presence. These findings support previous data suggesting a beneficial role of DE111 in digestion, metabolism, and immune health that appears to begin within hours of consumption.
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Affiliation(s)
- J Colom
- Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland
| | - D Freitas
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - A Simon
- Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland
| | - E Khokhlova
- Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland
| | - S Mazhar
- Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland
| | - M Buckley
- Mercy University Hospital, Grenville PI, Cork, Ireland
| | - C Phipps
- Deerland Probiotics and Enzymes, 3800 Cobb International Boulevard Kennesaw, GA, USA 30152, USA
| | - J Deaton
- Deerland Probiotics and Enzymes, 3800 Cobb International Boulevard Kennesaw, GA, USA 30152, USA
| | - A Brodkorb
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - K Rea
- Deerland Probiotics and Enzymes, Food Science Building, University College Cork, Cork, Ireland
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12
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Alves PJ, Gryson L, Hajjar J, Lepelletier D, Reners M, Rodríguez Salazar J, Simon A. Role of antiseptics in the prevention and treatment of infections in nursing homes. J Hosp Infect 2023; 131:58-69. [PMID: 36216172 DOI: 10.1016/j.jhin.2022.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/16/2022] [Accepted: 09/26/2022] [Indexed: 11/07/2022]
Abstract
Inadequate infection control, wound care, and oral hygiene protocols in nursing homes pose challenges to residents' quality of life. Based on the outcomes from a focus group meeting and a literature search, this narrative review evaluates the current and potential roles of antiseptics within nursing home infection management procedures. We examine contemporary strategies and concerns within the management of meticillin-resistant Staphylococcus aureus (MRSA; including decolonization regimes), chronic wound care, and oral hygiene, and review the available data for the use of antiseptics, with a focus on povidone-iodine. Compared with chlorhexidine, polyhexanide, and silver, povidone-iodine has a broader spectrum of antimicrobial activity, with rapid and potent activity against MRSA and other microbes found in chronic wounds, including biofilms. As no reports of bacterial resistance or cross-resistance following exposure to povidone-iodine exist, it may be preferable for MRSA decolonization compared with mupirocin and chlorhexidine, which can lead to resistant MRSA strains. Povidone-iodine oral products have greater efficacy against oral pathogens compared with other antiseptics such as chlorhexidine mouthwash, highlighting the clinical benefit of povidone-iodine in oral care. Additionally, povidone-iodine-based products, including mouthwash, have demonstrated rapid in-vitro virucidal activity against SARS-CoV-2 and may help reduce its transmission if incorporated into nursing home coronavirus 2019 control protocols. Importantly, povidone-iodine activity is not adversely affected by organic material, such as that found in chronic wounds and the oral cavity. Povidone-iodine is a promising antiseptic agent for the management of infections in the nursing home setting, including MRSA decolonization procedures, chronic wound management, and oral care.
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Affiliation(s)
- P J Alves
- Wounds Research Laboratory, Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, Portugal.
| | - L Gryson
- Belgian Defence Medical Component, Brussels, Belgium
| | - J Hajjar
- Infection Control Practitioner, Consultant, Pau, France
| | - D Lepelletier
- Hospital Hygiene Department, Nantes University Hospital, Nantes, France
| | - M Reners
- Private Dental Practice, Liège, Belgium
| | | | - A Simon
- Infection Control Team, Groupe Hospitalier Jolimont, Haine Saint-Paul, Belgium
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13
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Rigal L, Bellec J, Hervouin A, Lederlin M, De Crevoisier R, Benali K, Martins R, Simon A. Motion discrepancies between cardiac target and ICD lead, and their impact on target volume for cardiac radioablation. Archives of Cardiovascular Diseases Supplements 2023. [DOI: 10.1016/j.acvdsp.2022.10.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Rigal L, Simon A, Benali K, Hamel-Bougault M, Barre V, Bellec J, Lederlin M, De Crevoisier R, Martins R. A novel data integration workflow for target delineation in cardiac radioablation. Archives of Cardiovascular Diseases Supplements 2023. [DOI: 10.1016/j.acvdsp.2022.10.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Goupil A, Heinen JP, Salame R, Rossi F, Reina J, Pennetier C, Simon A, Skorski P, Louzao A, Bardin AJ, Basto R, Gonzalez C. Illuminati: a form of gene expression plasticity in Drosophila neural stem cells. Development 2022; 149:282932. [PMID: 36399062 PMCID: PMC9845751 DOI: 10.1242/dev.200808] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 10/06/2022] [Indexed: 11/21/2022]
Abstract
While testing for genome instability in Drosophila as reported by unscheduled upregulation of UAS-GFP in cells that co-express GAL80 and GAL4, we noticed that, as expected, background levels were low in most developing tissues. However, GFP-positive clones were frequent in the larval brain. Most of these clones originated from central brain neural stem cells. Using imaging-based approaches and genome sequencing, we show that these unscheduled clones do not result from chromosome loss or mutations in GAL80. We have named this phenomenon 'Illuminati'. Illuminati is strongly enhanced in brat tumors and is also sensitive to environmental conditions such as food content and temperature. Illuminati is suppressed by Su(var)2-10, but it is not significantly affected by several modifiers of position effect variegation or Gal4::UAS variegation. We conclude that Illuminati identifies a previously unknown type of functional instability that may have important implications in development and disease.
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Affiliation(s)
- Alix Goupil
- Institut Curie, Paris Science et Lettres Research University, Centre National de la Recherche Scientifique, Unité Mixte de Recherche UMR144, Biology of Centrosomes and Genetic Instability Laboratory, 75005 Paris, France
| | - Jan Peter Heinen
- Institute for Research in Biomedicine (IRB Barcelona), Cell Division Laboratory, Cancer Science Programme, The Barcelona Institute of Science and Technology, Baldiri Reixac, 10, 08028 Barcelona, Spain
| | - Riham Salame
- Institut Curie, Paris Science et Lettres Research University, Centre National de la Recherche Scientifique, Unité Mixte de Recherche UMR144, Biology of Centrosomes and Genetic Instability Laboratory, 75005 Paris, France
| | - Fabrizio Rossi
- Institute for Research in Biomedicine (IRB Barcelona), Cell Division Laboratory, Cancer Science Programme, The Barcelona Institute of Science and Technology, Baldiri Reixac, 10, 08028 Barcelona, Spain
| | - Jose Reina
- Institute for Research in Biomedicine (IRB Barcelona), Cell Division Laboratory, Cancer Science Programme, The Barcelona Institute of Science and Technology, Baldiri Reixac, 10, 08028 Barcelona, Spain
| | - Carole Pennetier
- Institut Curie, Paris Science et Lettres Research University, Centre National de la Recherche Scientifique, Unité Mixte de Recherche UMR144, Biology of Centrosomes and Genetic Instability Laboratory, 75005 Paris, France
| | - Anthony Simon
- Institut Curie, Paris Science et Lettres Research University, Centre National de la Recherche Scientifique, Unité Mixte de Recherche UMR144, Biology of Centrosomes and Genetic Instability Laboratory, 75005 Paris, France
| | - Patricia Skorski
- Institut Curie, PSL Research University, CNRS UMR 3215, INSERM U934, Stem Cells and Tissue Homeostasis Group, 75005 Paris, France
| | - Anxela Louzao
- Institute for Research in Biomedicine (IRB Barcelona), Cell Division Laboratory, Cancer Science Programme, The Barcelona Institute of Science and Technology, Baldiri Reixac, 10, 08028 Barcelona, Spain
| | - Allison J. Bardin
- Institut Curie, PSL Research University, CNRS UMR 3215, INSERM U934, Stem Cells and Tissue Homeostasis Group, 75005 Paris, France
| | - Renata Basto
- Institut Curie, Paris Science et Lettres Research University, Centre National de la Recherche Scientifique, Unité Mixte de Recherche UMR144, Biology of Centrosomes and Genetic Instability Laboratory, 75005 Paris, France,Authors for correspondence (; )
| | - Cayetano Gonzalez
- Institute for Research in Biomedicine (IRB Barcelona), Cell Division Laboratory, Cancer Science Programme, The Barcelona Institute of Science and Technology, Baldiri Reixac, 10, 08028 Barcelona, Spain,Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain,Authors for correspondence (; )
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16
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Simon A, Pessoa Barradas N, Romolo F. Preface-Fostering the use of nuclear analytical techniques for forensic science. Forensic Sci Int 2022; 341:111517. [DOI: 10.1016/j.forsciint.2022.111517] [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]
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17
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Marcellin F, Brégigeon-Ronot S, Ramier C, Protopopescu C, Gilbert C, Di Beo V, Duvivier C, Bureau-Stoltmann M, Rosenthal E, Wittkop L, Salmon-Céron D, Carrieri P, Sogni P, Barré T, Salmon D, Wittkop L, Sogni P, Esterle L, Trimoulet P, Izopet J, Serfaty L, Paradis V, Spire B, Carrieri P, Valantin M, Pialoux G, Chas J, Zaegel-Faucher O, Barange K, Naqvi A, Rosenthal E, Bicart-See A, Bouchaud O, Gervais A, Lascoux-Combe C, Goujard C, Lacombe K, Duvivier C, Neau D, Morlat P, Bani-Sadr F, Meyer L, Boufassa F, Autran B, Roque A, Solas C, Fontaine H, Costagliola D, Piroth L, Simon A, Zucman D, Boué F, Miailhes P, Billaud E, Aumaître H, Rey D, Peytavin G, Petrov-Sanchez V, Levier A, Salmon D, Usubillaga R, Sogni P, Terris B, Tremeaux P, Katlama C, Valantin M, Stitou H, Simon A, Cacoub P, Nafissa S, Benhamou Y, Charlotte F, Fourati S, Poizot-Martin I, Zaegel O, Laroche H, Tamalet C, Pialoux G, Chas J, Callard P, Bendjaballah F, Amiel C, Le Pendeven C, Marchou B, Alric L, Barange K, Metivier S, Selves J, Larroquette F, Rosenthal E, Naqvi A, Rio V, Haudebourg J, Saint-Paul M, De Monte A, Giordanengo V, Partouche C, Bouchaud O, Martin A, Ziol M, Baazia Y, Iwaka-Bande V, Gerber A, Uzan M, Bicart-See A, Garipuy D, Ferro-Collados M, Selves J, Nicot F, Gervais A, Yazdanpanah Y, Adle-Biassette H, Alexandre G, Peytavin G, Lascoux-Combe C, Molina J, Bertheau P, Chaix M, Delaugerre C, Maylin S, Lacombe K, Bottero J, Krause J, Girard P, Wendum D, Cervera P, Adam J, Viala C, Vittecocq D, Goujard C, Quertainmont Y, Teicher E, Pallier C, Lortholary O, Duvivier C, Rouzaud C, Lourenco J, Touam F, Louisin C, Avettand-Fenoel V, Gardiennet E, Mélard A, Neau D, Ochoa A, Blanchard E, Castet-Lafarie S, Cazanave C, Malvy D, Dupon M, Dutronc H, Dauchy F, Lacaze-Buzy L, Desclaux A, Bioulac-Sage P, Trimoulet P, Reigadas S, Morlat P, Lacoste D, Bonnet F, Bernard N, Hessamfar M, Paccalin J, Martell C, Pertusa M, Vandenhende M, Mercié P, Malvy D, Pistone T, Receveur M, Méchain M, Duffau P, Rivoisy C, Faure I, Caldato S, Bioulac-Sage P, Trimoulet P, Reigadas S, Bellecave P, Tumiotto C, Pellegrin J, Viallard J, Lazzaro E, Greib C, Bioulac-Sage P, Trimoulet P, Reigadas S, Zucman D, Majerholc C, Brollo M, Farfour E, Boué F, Polo Devoto J, Kansau I, Chambrin V, Pignon C, Berroukeche L, Fior R, Martinez V, Abgrall S, Favier M, Deback C, Lévy Y, Dominguez S, Lelièvre J, Lascaux A, Melica G, Billaud E, Raffi F, Allavena C, Reliquet V, Boutoille D, Biron C, Lefebvre M, Hall N, Bouchez S, Rodallec A, Le Guen L, Hemon C, Miailhes P, Peyramond D, Chidiac C, Ader F, Biron F, Boibieux A, Cotte L, Ferry T, Perpoint T, Koffi J, Zoulim F, Bailly F, Lack P, Maynard M, Radenne S, Amiri M, Valour F, Koffi J, Zoulim F, Bailly F, Lack P, Maynard M, Radenne S, Augustin-Normand C, Scholtes C, Le-Thi T, Piroth L, Chavanet P, Duong Van Huyen M, Buisson M, Waldner-Combernoux A, Mahy S, Salmon Rousseau A, Martins C, Aumaître H, Galim S, Bani-Sadr F, Lambert D, Nguyen Y, Berger J, Hentzien M, Brodard V, Rey D, Partisani M, Batard M, Cheneau C, Priester M, Bernard-Henry C, de Mautort E, Fischer P, Gantner et S Fafi-Kremer P, Roustant F, Platterier P, Kmiec I, Traore L, Lepuil S, Parlier S, Sicart-Payssan V, Bedel E, Anriamiandrisoa S, Pomes C, Touam F, Louisin C, Mole M, Bolliot C, Catalan P, Mebarki M, Adda-Lievin A, Thilbaut P, Ousidhoum Y, Makhoukhi F, Braik O, Bayoud R, Gatey C, Pietri M, Le Baut V, Ben Rayana R, Bornarel D, Chesnel C, Beniken D, Pauchard M, Akel S, Caldato S, Lions C, Ivanova A, Ritleg AS, Debreux C, Chalal L, J.Zelie, Hue H, Soria A, Cavellec M, Breau S, Joulie A, Fisher P, Gohier S, Croisier-Bertin D, Ogoudjobi S, Brochier C, Thoirain-Galvan V, Le Cam M, Carrieri P, Chalouni M, Conte V, Dequae-Merchadou L, Desvallées M, Esterle L, Gilbert C, Gillet S, Guillochon Q, Khan C, Knight R, Marcellin F, Michel L, Mora M, Protopopescu C, Roux P, Spire B, Barré T, Ramier C, Sow A, Lions C, Di Beo V, Bureau M, Wittkop L. Depressive symptoms after hepatitis C cure and socio-behavioral correlates in aging people living with HIV (ANRS CO13 HEPAVIH). JHEP Rep 2022; 5:100614. [DOI: 10.1016/j.jhepr.2022.100614] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/06/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022] Open
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18
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Clark AG, Maitra A, Jacques C, Bergert M, Pérez-González C, Simon A, Lederer L, Diz-Muñoz A, Trepat X, Voituriez R, Vignjevic DM. Self-generated gradients steer collective migration on viscoelastic collagen networks. Nat Mater 2022; 21:1200-1210. [PMID: 35637338 DOI: 10.1038/s41563-022-01259-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 04/13/2022] [Indexed: 06/15/2023]
Abstract
Growing evidence suggests that the physical properties of the cellular microenvironment influence cell migration. However, it is not currently understood how active physical remodelling by cells affects migration dynamics. Here we report that cell clusters seeded on deformable collagen-I networks display persistent collective migration despite not showing any apparent intrinsic polarity. Clusters generate transient gradients in collagen density and alignment due to viscoelastic relaxation of the collagen networks. Combining theory and experiments, we show that crosslinking collagen networks or reducing cell cluster size results in reduced network deformation, shorter viscoelastic relaxation time and smaller gradients, leading to lower migration persistence. Traction force and Brillouin microscopy reveal asymmetries in force distributions and collagen stiffness during migration, providing evidence of mechanical cross-talk between cells and their substrate during migration. This physical model provides a mechanism for self-generated directional migration on viscoelastic substrates in the absence of internal biochemical polarity cues.
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Affiliation(s)
- Andrew G Clark
- Cell Biology and Cancer Unit, Institut Curie, PSL Research University, CNRS, Paris, France.
- Institute of Cell Biology and Immunology, Stuttgart Research Center Systems Biology, University of Stuttgart, Stuttgart, Germany.
- Center for Personalized Medicine, University of Tübingen, Tübingen, Germany.
| | - Ananyo Maitra
- Laboratoire Jean Perrin, Sorbonne Université and CNRS, Paris, France.
- Laboratoire de Physique Théorique et Modélisation, CNRS, CY Cergy Paris Université, Cergy-Pontoise Cedex, France.
| | - Cécile Jacques
- Cell Biology and Cancer Unit, Institut Curie, PSL Research University, CNRS, Paris, France
| | - Martin Bergert
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Carlos Pérez-González
- Cell Biology and Cancer Unit, Institut Curie, PSL Research University, CNRS, Paris, France
| | - Anthony Simon
- Cell Biology and Cancer Unit, Institut Curie, PSL Research University, CNRS, Paris, France
| | - Luc Lederer
- Cell Biology and Cancer Unit, Institut Curie, PSL Research University, CNRS, Paris, France
| | - Alba Diz-Muñoz
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Xavier Trepat
- Institute for Bioengineering of Catalonia, The Barcelona Institute for Science and Technology (BIST), Barcelona, Spain
- Facultat de Medicina, University of Barcelona, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina, Barcelona, Spain
| | - Raphaël Voituriez
- Laboratoire de Physique Théorique et Modélisation, CNRS, CY Cergy Paris Université, Cergy-Pontoise Cedex, France
- Laboratoire de Physique Théorique de la Matière Condensée, Sorbonne Université and CNRS, Paris, France
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19
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Morretton JP, Simon A, Herbette A, Barbazan J, Pérez-González C, Cosson C, Mboup B, Latouche A, Popova T, Kieffer Y, Macé AS, Gestraud P, Bataillon G, Becette V, Meseure D, Nicolas A, Mariani O, Vincent-Salomon A, Stern MH, Mechta-Grigoriou F, Roman Roman S, Vignjevic DM, Rouzier R, Sastre-Garau X, Goundiam O, Basto R. A catalog of numerical centrosome defects in epithelial ovarian cancers. EMBO Mol Med 2022; 14:e15670. [PMID: 36069081 PMCID: PMC9449595 DOI: 10.15252/emmm.202215670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/16/2022] Open
Abstract
Centrosome amplification, the presence of more than two centrosomes in a cell is a common feature of most human cancer cell lines. However, little is known about centrosome numbers in human cancers and whether amplification or other numerical aberrations are frequently present. To address this question, we have analyzed a large cohort of primary human epithelial ovarian cancers (EOCs) from 100 patients. We found that rigorous quantitation of centrosome number in tumor samples was extremely challenging due to tumor heterogeneity and extensive tissue disorganization. Interestingly, even if centrosome clusters could be identified, the incidence of centrosome amplification was not comparable to what has been described in cultured cancer cells. Surprisingly, centrosome loss events where a few or many nuclei were not associated with centrosomes were clearly noticed and overall more frequent than centrosome amplification. Our findings highlight the difficulty of characterizing centrosome numbers in human tumors, while revealing a novel paradigm of centrosome number defects in EOCs.
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Affiliation(s)
- Jean-Philippe Morretton
- Biology of Centrosomes and Genetic Instability, Institut Curie, PSL Research University, CNRS UMR 144, Paris, France
| | - Anthony Simon
- Biology of Centrosomes and Genetic Instability, Institut Curie, PSL Research University, CNRS UMR 144, Paris, France
| | - Aurélie Herbette
- Department of Translational Research, Institut Curie, PSL University, Paris Cedex 05, France
| | - Jorge Barbazan
- Migration and Invasion Laboratory, Institut Curie, PSL Research University, CNRS UMR 144, Paris, France
| | - Carlos Pérez-González
- Migration and Invasion Laboratory, Institut Curie, PSL Research University, CNRS UMR 144, Paris, France
| | - Camille Cosson
- Department of Translational Research, Institut Curie, PSL University, Paris Cedex 05, France
| | - Bassirou Mboup
- Statistical Methods for Precision Medicine, INSERM U900, Institut Curie, Saint-Cloud, France
| | - Aurélien Latouche
- Statistical Methods for Precision Medicine, INSERM U900, Institut Curie, Saint-Cloud, France
| | - Tatiana Popova
- DNA Repair & Uveal Melanoma (D.R.U.M.), INSERM U830, Institut Curie, PSL Research University, Paris Cedex 05, France
| | - Yann Kieffer
- Stress and Cancer Laboratory, INSERM U830, Institut Curie, Team Ligue Nationale Contre le Cancer, PSL Research University, Paris, France
| | - Anne-Sophie Macé
- Cell and Tissue Imaging Facility (PICT-IBiSA), Institut Curie, PSL Research University, Centre National de la Recherche Scientifique, Paris, France
| | - Pierre Gestraud
- Bioinformatics and Computational Systems Biology of Cancer, Mines Paristech, INSERM U900, Institut Curie, PSL University, Paris Cedex 05, France
| | | | | | - Didier Meseure
- Department of Pathology, Institut Curie, Paris Cedex 05, France
| | - André Nicolas
- Department of Pathology, Institut Curie, Paris Cedex 05, France
| | - Odette Mariani
- Department of Pathology, Institut Curie, Paris Cedex 05, France.,Biological Resource Center, Department of Pathology, Institut Curie, PSL Research University, Paris, France
| | | | - Marc-Henri Stern
- DNA Repair & Uveal Melanoma (D.R.U.M.), INSERM U830, Institut Curie, PSL Research University, Paris Cedex 05, France
| | - Fatima Mechta-Grigoriou
- Stress and Cancer Laboratory, INSERM U830, Institut Curie, Team Ligue Nationale Contre le Cancer, PSL Research University, Paris, France
| | - Sergio Roman Roman
- Department of Translational Research, Institut Curie, PSL University, Paris Cedex 05, France
| | - Danijela Matic Vignjevic
- Migration and Invasion Laboratory, Institut Curie, PSL Research University, CNRS UMR 144, Paris, France
| | - Roman Rouzier
- Statistical Methods for Precision Medicine, INSERM U900, Institut Curie, Saint-Cloud, France.,Department of Surgery, Institut Curie, Saint-Cloud, France.,UFR Simone Veil - Santé, Université Versailles Saint Quentin, Université Paris Saclay, Montigny le Bretonneux, France
| | | | - Oumou Goundiam
- Department of Translational Research, Institut Curie, PSL University, Paris Cedex 05, France
| | - Renata Basto
- Biology of Centrosomes and Genetic Instability, Institut Curie, PSL Research University, CNRS UMR 144, Paris, France
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20
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Gemble S, Wardenaar R, Keuper K, Srivastava N, Nano M, Macé AS, Tijhuis AE, Bernhard SV, Spierings DCJ, Simon A, Goundiam O, Hochegger H, Piel M, Foijer F, Storchová Z, Basto R. Author Correction: Genetic instability from a single S phase after whole-genome duplication. Nature 2022; 608:E27. [PMID: 35864235 PMCID: PMC9385471 DOI: 10.1038/s41586-022-05099-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Simon Gemble
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France.
| | - René Wardenaar
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Kristina Keuper
- Department of Molecular Genetics, TU Kaiserslautern, Kaiserslautern, Germany
| | - Nishit Srivastava
- Institut Curie and Institut Pierre Gilles de Gennes, PSL Research University, CNRS, UMR 144, Systems Biology of Cell Polarity and Cell Division, Paris, France
| | - Maddalena Nano
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France.,Molecular, Cellular, and Developmental Biology Department, University of California, Santa Barbara, CA, USA
| | - Anne-Sophie Macé
- Cell and Tissue Imaging Facility (PICT-IBiSA), Institut Curie, PSL Research University, Centre National de la Recherche Scientifique, Paris, France
| | - Andréa E Tijhuis
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Diana C J Spierings
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Anthony Simon
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France
| | - Oumou Goundiam
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France
| | - Helfrid Hochegger
- Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Brighton, UK
| | - Matthieu Piel
- Institut Curie and Institut Pierre Gilles de Gennes, PSL Research University, CNRS, UMR 144, Systems Biology of Cell Polarity and Cell Division, Paris, France
| | - Floris Foijer
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Zuzana Storchová
- Department of Molecular Genetics, TU Kaiserslautern, Kaiserslautern, Germany
| | - Renata Basto
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France.
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Jabs JM, Schwabe A, Wollkopf AD, Gebel B, Stadelmaier J, Erdmann S, Radicke F, Grundmann H, Kramer A, Monsef I, Rücker G, Rupp J, Scheithauer S, Schmucker C, Simon A, Mutters NT. The role of routine SARS-CoV-2 screening of healthcare-workers in acute care hospitals in 2020: a systematic review and meta-analysis. BMC Infect Dis 2022; 22:587. [PMID: 35780088 PMCID: PMC9250183 DOI: 10.1186/s12879-022-07554-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 06/08/2022] [Indexed: 02/08/2023] Open
Abstract
Background Healthcare workers (HCW) are at increased risk of infection with SARS-CoV-2. Vulnerable patient populations in particular must be protected, and clinics should not become transmission hotspots to avoid delaying medical treatments independent of COVID. Because asymptomatic transmission has been described, routine screening of asymptomatic HCW would potentially be able to interrupt chains of infection through early detection. Methods A systematic search was conducted in the Cochrane COVID-19 Study Register, Web of Science and WHO COVID‐19 Global literature on coronavirus with regard to non-incident related testing of healthcare workers using polymerase chain reaction on May 4th 2021. Studies since January 2020 were included. An assessment of risk of bias and representativeness was performed. Results The search identified 39 studies with heterogeneous designs. Data collection of the included studies took place from January to August 2020. The studies were conducted worldwide and the sample size of the included HCW ranged from 70 to 9449 participants. In total, 1000 of 51,700 (1.9%) asymptomatic HCW were tested positive for SARS-CoV-2 using PCR testing. The proportion of positive test results ranged between 0 and 14.3%. No study reported on HCW-screening related reductions in infected person-days. Discussion and conclusions The heterogeneous proportions might be explained by different regional incidences, lock-downs, and pre-analytical pitfalls that reduce the sensitivity of the nasopharyngeal swab. The very high prevalence in some studies indicates that screening HCW for SARS-CoV-2 may be important particularly in geographical regions and pandemic periods with a high-incidence. With low numbers and an increasing rate of vaccinated HCW, a strict cost–benefit consideration must be made, especially in times of low incidences. Since we found no studies that reported on HCW-screening related reductions in infected person-days, re-evaluation should be done when these are available. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07554-5.
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Affiliation(s)
- J M Jabs
- Institute for Hygiene and Public Health, Bonn University Hospital, Venusberg-Campus 1, 53127, Bonn, Germany
| | - A Schwabe
- Institute for Hygiene and Public Health, Bonn University Hospital, Venusberg-Campus 1, 53127, Bonn, Germany
| | - A D Wollkopf
- Institute for Hygiene and Public Health, Bonn University Hospital, Venusberg-Campus 1, 53127, Bonn, Germany
| | - B Gebel
- Department of Infectious Diseases and Microbiology, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - J Stadelmaier
- Institute for Evidence in Medicine, Faculty of Medicine and Medical Center, University of Freiburg, Breisacher Str. 86, 79110, Freiburg, Germany
| | - S Erdmann
- Institute for Hygiene and Environmental Medicine, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475, Greifswald, Germany
| | - F Radicke
- Institute for Hygiene and Environmental Medicine, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475, Greifswald, Germany
| | - H Grundmann
- Institute for Infection Prevention and Hospital Hygiene, Faculty of Medicine and Medical Center, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany
| | - A Kramer
- Institute for Hygiene and Environmental Medicine, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475, Greifswald, Germany
| | - I Monsef
- Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Cochrane Haematology, University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - G Rücker
- Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Zinkmattenstraße 6a, 79108, Freiburg, Germany
| | - J Rupp
- Department of Infectious Diseases and Microbiology, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany
| | - S Scheithauer
- Institute of Infection Control and Infectious Diseases, University Medical Center Göttingen, Robert-Koch-Straße 40, 37075, Göttingen, Germany
| | - C Schmucker
- Institute for Evidence in Medicine, Faculty of Medicine and Medical Center, University of Freiburg, Breisacher Str. 86, 79110, Freiburg, Germany
| | - A Simon
- Clinic for Pediatric Oncology and Hematology, Saarland University Hospital, Kirrberger Straße, 66421, Homburg, Saar, Germany
| | - Nico T Mutters
- Institute for Hygiene and Public Health, Bonn University Hospital, Venusberg-Campus 1, 53127, Bonn, Germany.
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22
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Herzberg S, Etzyoni A, Karavani G, Simon A, Ben-Meir A, Imbar T. P-657 Administration of an extra Gonadotropin dose on trigger day in patients undergoing elective egg freezing. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Does an extra Gonadotropin (GT) dose on trigger day during a gonadotropin-releasing hormone (GnRH) antagonist cycle for oocyte cryopreservation result in improved cycle outcomes?
Summary answer
An extra GT dose on trigger day in patients undergoing elective egg freezing is not associated with increased oocyte yield.
What is known already
The most common controlled ovarian hyperstimulation (COHS) protocol used in elective oocyte cryopreservation cycles is a GnRH antagonist protocol with a GnRH agonist trigger. There is no consensus about the timing of the final gonadotropin dose administration. Some physicians add an extra GT dose during the ovulation trigger day and others advise to receive the last GT dose the day before. The yield of this extra GT dose was not previously evaluated.
Study design, size, duration
A retrospective cohort study, consisting of cycles of elective oocyte cryopreservation at Hadassah Medical Center from 1.2017 through 5.2021. Patients were divided into 2 groups- women who received their last GT dose a day before the GnRH agonist trigger, and women who received the last GT on the trigger day. Background and gynecologic characteristics, as well as COHS cycle parameters, were compared. The primary outcome was the average number of mature oocytes in each group.
Participants/materials, setting, methods
Women 30-41 years who were admitted for elective oocyte cryopreservation. Women who were referred due to medical reasons or cycles with a protocol other than GnRH antagonist were excluded. Ovarian stimulation with GT began on the 3rd day of the cycle, and five days later, a GnRH antagonist was added. When more than two mature follicles were demonstrated, a GnRH agonist trigger was administrated and approximately 36 hours later, the oocyte aspiration procedure was performed
Main results and the role of chance
During the study period, 448 elective egg freezing cycles were performed, 151 cycles with an extra dose on the trigger day and 297 cycles without an extra GT dose. The groups did not differ in their background characteristics, age, BMI, GT used, and the number of induction days. However, the extra GT group had significantly higher day 3 follicular stimulating hormone (FSH), lower anti-Mullerian hormone (AMH), and lower maximal Estradiol (E2) levels. The extra GT dose group had a significantly lower mean number of mature oocytes (11.1±7.1 vs. 6.4±4.5, p < 0.001).
To adjust for the maximal E2 parameter, that differed between the groups, an additional analysis was performed, dividing the two groups into subgroups of cycles with maximal E2 above and below 10,000 pmol\l. Interestingly, even in cycles with maximal E2 above 10,000 pmol\l, the extra dose group had poorer results (10.3±4.3 vs. 12.7±7.2, p < 0.001). This difference was also noted in cycles with E2 below 10,000 pmol\l (5.4±4.0 vs 8.7±6.1 mature oocytes, p = 0.011). Additionally, a multiple regression model for the prediction of several oocytes retrieved showed that the extra GT dose parameter was not associated with increased oocytes number.
Limitations, reasons for caution
The retrospective design of this study and the differences in cycle characteristics between patients that did or did not receive an extra GT dose on trigger day make it prone to selection bias.
Wider implications of the findings
Our study shows that administration of an extra GT dose on trigger day in oocyte cryopreservation cycles does not yields more mature oocytes. However, wider prospective studies are needed to thoroughly investigate the implications of this treatment’s effect on cycle outcomes.
Trial registration number
Not applicable
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Affiliation(s)
- S Herzberg
- Hadassah Ein Cerem- Jerusalem, Infertility and IVF Unit , Jerusalem, Israel
| | - A Etzyoni
- Hadassah Ein Cerem- Jerusalem, Infertility and IVF Unit , Jerusalem, Israel
| | - G Karavani
- Hadassah Ein Cerem- Jerusalem, Infertility and IVF Unit , Jerusalem, Israel
| | - A Simon
- Hadassah Ein Cerem- Jerusalem, Infertility and IVF Unit , Jerusalem, Israel
| | - A Ben-Meir
- Hadassah Ein Cerem- Jerusalem, Infertility and IVF Unit , Jerusalem, Israel
| | - T Imbar
- Hadassah Ein Cerem- Jerusalem, Infertility and IVF Unit , Jerusalem, Israel
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Ogrizek A, Ramey D, Delcambre V, Simon A, Abdelhak M, Moro MR, Lachal J. Équipe mobile de pédopsychiatrie en territoire guyanais : questionnement de l’adolescent amérindien. Encephale 2022:S0013-7006(22)00068-9. [DOI: 10.1016/j.encep.2022.01.010] [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] [Received: 08/27/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 11/25/2022]
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Romano M, Arici ZS, Piskin D, Alehashemi S, Aletaha D, Barron K, Benseler S, Berard R, Broderick L, Dedeoglu F, Diebold M, Durrant K, Ferguson P, Foell D, Hausmann J, Jones O, Kastner D, Lachmann HJ, Laxer R, Rivera D, Ruperto N, Simon A, Twilt M, Frenkel J, Hoffman H, De Jesus A, Kuemmerle-Deschner J, Özen S, Gattorno M, Goldbach-Mansky R, Demirkaya E. POS1372 THE 2021 EULAR AND ACR POINTS TO CONSIDER FOR DIAGNOSIS, MANAGEMENT AND MONITORING OF THE IL 1 MEDIATED AUTOINFLAMMATORY DISEASES: CAPS, TRAPS, MKD, AND DIRA. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.4850] [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: 11/03/2022]
Abstract
BackgroundThe Interleukin-1 (IL-1) mediated systemic autoinflammatory diseases (SAIDs), including the cryopyrin-associated periodic syndromes (CAPS), tumor necrosis factor receptor-associated periodic syndrome (TRAPS), mevalonate kinase deficiency (MKD), and deficiency of the IL-1 receptor antagonist (DIRA) belong to a group of rare immunodysregulatory diseases that primarily present in early childhood with variable multiorgan involvement. When untreated, patients with severe clinical phenotypes have a poor prognosis, and diagnosis and management of these patients can be challenging. However, recently-approved treatments targeting the pro-inflammatory cytokine IL-1 have been life-changing and have significantly improved patient outcomes.ObjectivesWe aimed to establish evidence-based recommendations on diagnosis, treatment, and monitoring to standardize the management of these patients.MethodsA multinational, multidisciplinary task force consisting of physician experts including rheumatologists, patients or caregivers, and allied health care professionals was established. Evidence synthesis including systematic literature review and expert consensus (Delphi) via surveys were conducted. Consensus methodology was utilized to formulate and vote on statements to guide optimal patient care.ResultsThe task force devised five overarching principles, 14 statements related to diagnosis, 10 on therapy, and 9 focused on long-term monitoring that were evidence and/or consensus-based for patients with IL-1 mediated diseases. An outline was developed for disease-specific monitoring of inflammation-induced organ damage progression and reported therapies of CAPS, TRAPS, MKD, and DIRA.ConclusionThe 2021 EULAR/ACR points to consider provide state-of-the-art knowledge based on published data and expert opinion to guide diagnostic evaluation, treatment, and monitoring of patients with CAPS, TRAPS, MKD and DIRA, and inform the various stakeholders about optimized patient care to improve disease outcomes.References[1]Masters SL, Simon A, Aksentijevich I, et al. Horror autoinflammaticus: the molecular pathophysiology of autoinflammatory disease (*). Annu Rev Immunol 2009;27:621-68.Disclosure of Interestsmicol romano: None declared, Zehra Serap Arici: None declared, David Piskin: None declared, Sara Alehashemi: None declared, Daniel Aletaha Speakers bureau: Lilly, Merck, Pfizer, Roche, Sandoz, Consultant of: Abbvie, Amgen, Lilly, Merck, Novartis, Pfizer, Roche, Sandoz, Grant/research support from: Abbvie, Amgen, Lilly, Novartis, Roche, SoBi, Sanofi, Karyl Barron: None declared, Susa Benseler: None declared, Roberta Berard Consultant of: Sandoz and Roche, Lori Broderick Grant/research support from: Novartis and Regeneron, Fatma Dedeoglu Consultant of: Novartis, Michelle Diebold: None declared, Karen Durrant: None declared, Polly Ferguson Consultant of: Novartis, Grant/research support from: NIH, CARRA, Inc, Dirk Foell Speakers bureau: Novartis, Peer Voice and SoBi, Consultant of: Boehringer Ingelheim, Chugai-Roche, Merck, Novartis, SoBi, Grant/research support from: Novartis and SoBi, Jonathan Hausmann Consultant of: Novartis, Biogen and Pfizer, Grant/research support from: CARRA, SoBi, Olcay Jones: None declared, Daniel Kastner: None declared, Helen J. Lachmann: None declared, Ronald Laxer Consultant of: SoBi, Novartis, Sanofi, Dorelia Rivera: None declared, Nicolino Ruperto Speakers bureau: Eli-Lilly, GSK, Pfizer SoBi and UCB, Consultant of: Ablynx, Amgen, Astrazeneca-Medimmune, Aurinia, Bayer, Bristol Myers and Squib, Cambridge Healthcare research, Celgene, Domain therapeutic, Eli-Lilly, EMD Serono, GSK, Idorsia, Janssen, Novartis, SoBi, Pfizer and UCB, Anna Simon: None declared, Marinka Twilt: None declared, Joost Frenkel: None declared, Hal Hoffman Consultant of: Novartis, Regeneron, SoBi, Aclaris, Grant/research support from: Bristol-Meyer-Squib, Jecure, Takeda and Zomagen, Adriana de Jesus: None declared, Jasmin Kuemmerle-Deschner Speakers bureau: Novartis and SoBi, Consultant of: Novartis and SoBi, Grant/research support from: Novartis and SoBi, Seza Özen Speakers bureau: Novartis and SoBi, Marco Gattorno Speakers bureau: Novartis and SoBi, Grant/research support from: Novartis, Raphaela goldbach-mansky: None declared, Erkan Demirkaya Grant/research support from: Sobi
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Simon A, Robinson F, Anzivino A, Boyer M, Hendricks A, Guilliams D, Casey J, Grider D, Valea F, Vlaisavljevich E. Abstract No. 134 Histotripsy for the treatment of uterine leiomyomas: a feasibility study in ex vivo uterine fibroids. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Harris L, Seewald M, Martin L, Villavicencio J, Simon A. The Voices of Doctors Who Provide Abortion Care Increase Public Support for Legal Abortion by Replacing Flawed Negative Stereotypes with Positive Images of Compassion, Skill and Conscience. Contraception 2022. [DOI: 10.1016/j.contraception.2022.03.013] [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: 11/03/2022]
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27
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Cubero L, Serrano J, Calvo F, Simon A, Castelli J, De Crevoisier R, Acosta Ó, Pascau J. PO-1632 DL-based OAR delineation for Head and Neck Radiotherapy: accuracy versus computational resources. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03596-4] [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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Dombos AC, Robertson D, Simon A, Kadlecek T, Hanhardt M, Görres J, Couder M, Kelmar R, Olivas-Gomez O, Stech E, Strieder F, Wiescher M. Measurement of Low-Energy Resonance Strengths in the ^{18}O(α,γ)^{22}Ne Reaction. Phys Rev Lett 2022; 128:162701. [PMID: 35522496 DOI: 10.1103/physrevlett.128.162701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/21/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
The ^{18}O(α,γ)^{22}Ne reaction is an essential part of a reaction chain that produces the ^{22}Ne(α,n)^{25}Mg neutron source for both the weak and main components of the slow neutron-capture process. At temperatures of stellar helium burning, the astrophysically relevant resonances in the ^{18}O(α,γ)^{22}Ne reaction that dominate the reaction rate occur at α particle energies E_{lab} of 472 and 569 keV. However, previous experiments have shown the strengths of these two resonances to be very weak, and only upper limits or partial resonance strengths could be obtained. This Letter reports the first direct measurement of the total resonance strength for the 472- and 569-keV resonances, 0.26±0.05 and 0.63±0.30 μeV, respectively. New resonance strengths for the resonances at α particle energies of 662.1, 749.9, and 767.6 keV are also provided. These results were achieved in an experiment optimized for background suppression and detection efficiency. The experiment was performed at the Sanford Underground Research Facility, in the 4850-foot underground cavity dedicated to the Compact Accelerator System for Performing Astrophysical Research. The experimental end station used the γ-summing High EffiCiency TOtal absorption spectrometeR. Compared to previous works, the results decrease the stellar reaction rate by as much as ≈46_{-11}^{+6}% in the relevant temperature range of stellar helium burning.
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Affiliation(s)
- A C Dombos
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - D Robertson
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - A Simon
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - T Kadlecek
- Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - M Hanhardt
- Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
- South Dakota Science and Technology Authority, Sanford Underground Research Facility, Lead, South Dakota 57754, USA
| | - J Görres
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - M Couder
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - R Kelmar
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - O Olivas-Gomez
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - E Stech
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - F Strieder
- Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - M Wiescher
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
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Lacinbala O, Calvo F, Dubosq C, Falvo C, Parneix P, Rapacioli M, Simon A, Pino T. Radiative relaxation in isolated large carbon clusters: Vibrational emission versus recurrent fluorescence. J Chem Phys 2022; 156:144305. [DOI: 10.1063/5.0080494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Recurrent fluorescence (RF) from isolated carbon clusters containing between 24 and 60 atoms is theoretically investigated as a function of internal energy, cluster size, and structural features. The vibrational relaxation kinetics and the associated IR emission spectra are determined by means of a Monte Carlo approach with vibrational density of states computed in the harmonic approximation. RF is generally found to be highly competitive with vibrational emission. The behaviors predicted for clusters of various sizes and archetypal structures indicate that the IR emission spectra are strongly influenced by RF, an energy gap law being obtained for the evolution of the RF rate constant depending on the electronic excitation state. The present results are relevant to the photophysics of the interstellar medium and could contribute to elucidating the carriers of the extended red emission bands and the continuum emission lying below the aromatic infrared bands believed to originate from mixed aromatic–aliphatic compounds.
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Affiliation(s)
- O. Lacinbala
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay (ISMO), 91405 Orsay, France
| | - F. Calvo
- Université Grenoble-Alpes, CNRS, LIPhy, 38000 Grenoble, France
| | - C. Dubosq
- Laboratoire de Chimie et Physique Quantiques (LCPQ), Fédération FeRMI, Université de Toulouse, CNRS, 31062 Toulouse, France
| | - C. Falvo
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay (ISMO), 91405 Orsay, France
- Université Grenoble-Alpes, CNRS, LIPhy, 38000 Grenoble, France
| | - P. Parneix
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay (ISMO), 91405 Orsay, France
| | - M. Rapacioli
- Laboratoire de Chimie et Physique Quantiques (LCPQ), Fédération FeRMI, Université de Toulouse, CNRS, 31062 Toulouse, France
| | - A. Simon
- Laboratoire de Chimie et Physique Quantiques (LCPQ), Fédération FeRMI, Université de Toulouse, CNRS, 31062 Toulouse, France
| | - T. Pino
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay (ISMO), 91405 Orsay, France
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Gemble S, Wardenaar R, Keuper K, Srivastava N, Nano M, Macé AS, Tijhuis AE, Bernhard SV, Spierings DCJ, Simon A, Goundiam O, Hochegger H, Piel M, Foijer F, Storchová Z, Basto R. Genetic instability from a single S phase after whole-genome duplication. Nature 2022; 604:146-151. [PMID: 35355016 PMCID: PMC8986533 DOI: 10.1038/s41586-022-04578-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 02/23/2022] [Indexed: 12/23/2022]
Abstract
Diploid and stable karyotypes are associated with health and fitness in animals. By contrast, whole-genome duplications—doublings of the entire complement of chromosomes—are linked to genetic instability and frequently found in human cancers1–3. It has been established that whole-genome duplications fuel chromosome instability through abnormal mitosis4–8; however, the immediate consequences of tetraploidy in the first interphase are not known. This is a key question because single whole-genome duplication events such as cytokinesis failure can promote tumorigenesis9 and DNA double-strand breaks10. Here we find that human cells undergo high rates of DNA damage during DNA replication in the first S phase following induction of tetraploidy. Using DNA combing and single-cell sequencing, we show that DNA replication dynamics is perturbed, generating under- and over-replicated regions. Mechanistically, we find that these defects result from a shortage of proteins during the G1/S transition, which impairs the fidelity of DNA replication. This work shows that within a single interphase, unscheduled tetraploid cells can acquire highly abnormal karyotypes. These findings provide an explanation for the genetic instability landscape that favours tumorigenesis after tetraploidization. Extensive DNA damage occurs during the first interphase following induction of tetraploidy in human cells, largely as a result of the lower amount of protein relative to DNA.
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Affiliation(s)
- Simon Gemble
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France.
| | - René Wardenaar
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Kristina Keuper
- Department of Molecular Genetics, TU Kaiserslautern, Kaiserslautern, Germany
| | - Nishit Srivastava
- Institut Curie and Institut Pierre Gilles de Gennes, PSL Research University, CNRS, UMR 144, Systems Biology of Cell Polarity and Cell Division, Paris, France
| | - Maddalena Nano
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France.,Molecular, Cellular, and Developmental Biology Department, University of California, Santa Barbara, CA, USA
| | - Anne-Sophie Macé
- Cell and Tissue Imaging Facility (PICT-IBiSA), Institut Curie, PSL Research University, Centre National de la Recherche Scientifique, Paris, France
| | - Andréa E Tijhuis
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Diana C J Spierings
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Anthony Simon
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France
| | - Oumou Goundiam
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France
| | - Helfrid Hochegger
- Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Brighton, UK
| | - Matthieu Piel
- Institut Curie and Institut Pierre Gilles de Gennes, PSL Research University, CNRS, UMR 144, Systems Biology of Cell Polarity and Cell Division, Paris, France
| | - Floris Foijer
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Zuzana Storchová
- Department of Molecular Genetics, TU Kaiserslautern, Kaiserslautern, Germany
| | - Renata Basto
- Institut Curie, PSL Research University, CNRS, UMR144, Biology of Centrosomes and Genetic Instability Laboratory, Paris, France.
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Barré T, Mercié P, Lions C, Miailhes P, Zucman D, Aumaître H, Esterle L, Sogni P, Carrieri P, Salmon-Céron D, Marcellin F, Salmon D, Wittkop L, Sogni P, Esterle L, Trimoulet P, Izopet J, Serfaty L, Paradis V, Spire B, Carrieri P, Valantin MA, Pialoux G, Chas J, Poizot-Martin I, Barange K, Naqvi A, Rosenthal E, Bicart-See A, Bouchaud O, Gervais A, Lascoux-Combe C, Goujard C, Lacombe K, Duvivier C, Neau D, Morlat P, Bani-Sadr F, Meyer L, Boufassa F, Autran B, Roque AM, Solas C, Fontaine H, Costagliola D, Piroth L, Simon A, Zucman D, Boué F, Miailhes P, Billaud E, Aumaître H, Rey D, Peytavin G, Petrov-Sanchez V, Levier A, Usubillaga R, Terris B, Tremeaux P, Katlama C, Valantin MA, Stitou H, Cacoub P, Nafissa S, Benhamou Y, Charlotte F, Fourati S, Zaegel O, Laroche H, Tamalet C, Callard P, Bendjaballah F, Le Pendeven C, Marchou B, Alric L, Metivier S, Selves J, Larroquette F, Rio V, Haudebourg J, Saint-Paul MC, De Monte A, Giordanengo V, Partouche C, Martin A, Ziol M, Baazia Y, Iwaka-Bande V, Gerber A, Uzan M, Garipuy D, Ferro-Collados MJ, Nicot F, Yazdanpanah Y, Adle-Biassette H, Alexandre G, Molina JM, Bertheau P, Chaix ML, Delaugerre C, Maylin S, Bottero J, Krause J, Girard PM, Wendum D, Cervera P, Adam J, Viala C, Vittecocq D, Quertainmont Y, Teicher E, Pallier C, Lortholary O, Rouzaud C, Lourenco J, Touam F, Louisin C, Avettand-Fenoel V, Gardiennet E, Mélard A, Ochoa A, Blanchard E, Castet-Lafarie S, Cazanave C, Malvy D, Dupon M, Dutronc H, Dauchy F, Lacaze-Buzy L, Desclaux A, Bioulac-Sage P, Reigadas S, Lacoste D, Bonnet F, Bernard N, Hessamfar M, J, Paccalin F, Martell C, Pertusa MC, Vandenhende M, Mercié P, Pistone T, Receveur MC, Méchain M, Duffau P, Rivoisy C, Faure I, Caldato S, Bellecave P, Tumiotto C, Pellegrin JL, Viallard JF, Lazzaro E, Greib C, Majerholc C, Brollo M, Farfour E, Devoto JP, Kansau I, Chambrin V, Pignon C, Berroukeche L, Fior R, Martinez V, Abgrall S, Favier M, Deback C, Lévy Y, Dominguez S, Lelièvre JD, Lascaux AS, Melica G, Raffi F, Allavena C, Reliquet V, Boutoille D, Biron C, Lefebvre M, Hall N, Bouchez S, Rodallec A, Le Guen L, Hemon C, Peyramond D, Chidiac C, Ader F, Biron F, Boibieux A, Cotte L, Ferry T, Perpoint T, Koffi J, Zoulim F, Bailly F, Lack P, Maynard M, Radenne S, Amiri M, Valour F, Augustin-Normand C, Scholtes C, Le-Thi TT, Van Huyen PCMD, Buisson M, Waldner-Combernoux A, Mahy S, Rousseau AS, Martins C, Galim S, Lambert D, Nguyen Y, Berger JL, Hentzien M, Brodard V, Partisani M, Batard ML, Cheneau C, Priester M, Bernard-Henry C, de Mautort E, Fischer P, Gantner P, Fafi-Kremer S, Roustant F, Platterier P, Kmiec I, Traore L, Lepuil S, Parlier S, Sicart-Payssan V, Bedel E, Anriamiandrisoa S, Pomes C, Mole M, Bolliot C, Catalan P, Mebarki M, Adda-Lievin A, Thilbaut P, Ousidhoum Y, Makhoukhi FZ, Braik O, Bayoud R, Gatey C, Pietri MP, Le Baut V, Rayana RB, Bornarel D, Chesnel C, Beniken D, Pauchard M, Akel S, Lions C, Ivanova A, Ritleg AS, Debreux C, Chalal L, Zelie J, Hue H, Soria A, Cavellec M, Breau S, Joulie A, Fisher P, Gohier S, Croisier-Bertin D, Ogoudjobi S, Brochier C, Thoirain-Galvan V, Le Cam M, Chalouni M, Conte V, Dequae-Merchadou L, Desvallees M, Gilbert C, Gillet S, Knight R, Lemboub T, Marcellin F, Michel L, Mora M, Protopopescu C, Roux P, Tezkratt S, Barré T, Rojas TR, Baudoin M, Di Beo MSV, Nishimwe M. HCV cure: an appropriate moment to reduce cannabis use in people living with HIV? (ANRS CO13 HEPAVIH data). AIDS Res Ther 2022; 19:15. [PMID: 35292069 PMCID: PMC8922772 DOI: 10.1186/s12981-022-00440-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 03/06/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Thanks to direct-acting antivirals, hepatitis C virus (HCV) infection can be cured, with similar rates in HCV-infected and HIV-HCV co-infected patients. HCV cure is likely to foster behavioral changes in psychoactive substance use, which is highly prevalent in people living with HIV (PLWH). Cannabis is one substance that is very commonly used by PLWH, sometimes for therapeutic purposes. We aimed to identify correlates of cannabis use reduction following HCV cure in HIV-HCV co-infected cannabis users and to characterize persons who reduced their use. METHODS We used data collected on HCV-cured cannabis users in a cross-sectional survey nested in the ANRS CO13 HEPAVIH cohort of HIV-HCV co-infected patients, to perform logistic regression, with post-HCV cure cannabis reduction as the outcome, and socio-behavioral characteristics as potential correlates. We also characterized the study sample by comparing post-cure substance use behaviors between those who reduced their cannabis use and those who did not. RESULTS Among 140 HIV-infected cannabis users, 50 and 5 had reduced and increased their use, respectively, while 85 had not changed their use since HCV cure. Cannabis use reduction was significantly associated with tobacco use reduction, a decrease in fatigue level, paying more attention to one's dietary habits since HCV cure, and pre-HCV cure alcohol abstinence (p = 0.063 for alcohol use reduction). CONCLUSIONS Among PLWH using cannabis, post-HCV cure cannabis reduction was associated with tobacco use reduction, improved well-being, and adoption of healthy behaviors. The management of addictive behaviors should therefore be encouraged during HCV treatment.
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Nallet C, Puyraveau M, Lallemant M, Ramanah R, Simon A, Krausz M, Riethmuller D, Mottet N. 432 Mid-cavity vacuum-assisted delivery: Description of a large cohort of 1097 women, and development of a clinical risk score of failure. Eur J Obstet Gynecol Reprod Biol 2022. [DOI: 10.1016/j.ejogrb.2021.11.363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Cardesa-Salzmann TM, Simon A, Graf N. Antibiotics in early life and childhood pre-B-ALL. Reasons to analyze a possible new piece in the puzzle. Discov Oncol 2022; 13:5. [PMID: 35201533 PMCID: PMC8777491 DOI: 10.1007/s12672-022-00465-6] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 12/23/2021] [Indexed: 11/29/2022] Open
Abstract
Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer with precursor B-cell ALL (pB-ALL) accounting for ~ 85% of the cases. Childhood pB-ALL development is influenced by genetic susceptibility and host immune responses. The role of the intestinal microbiome in leukemogenesis is gaining increasing attention since Vicente-Dueñas' seminal work demonstrated that the gut microbiome is distinct in mice genetically predisposed to ALL and that the alteration of this microbiome by antibiotics is able to trigger pB-ALL in Pax5 heterozygous mice in the absence of infectious stimuli. In this review we provide an overview on novel insights on the role of the microbiome in normal and preleukemic hematopoiesis, inflammation, the effect of dysbiosis on hematopoietic stem cells and the emerging importance of the innate immune responses in the conversion from preleukemic to leukemic state in childhood ALL. Since antibiotics, which represent one of the most widely used medical interventions, alter the gut microbial composition and can cause a state of dysbiosis, this raises exciting epidemiological questions regarding the implications for antibiotic use in early life, especially in infants with a a preleukemic "first hit". Sheading light through a rigorous study on this piece of the puzzle may have broad implications for clinical practice.
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Affiliation(s)
- T. M. Cardesa-Salzmann
- Department of Pediatric Hematology and Oncology, Universitätsklinikum des Saarlandes, Homburg, Saarland Germany
| | - A. Simon
- Department of Pediatric Hematology and Oncology, Universitätsklinikum des Saarlandes, Homburg, Saarland Germany
| | - N. Graf
- Department of Pediatric Hematology and Oncology, Universitätsklinikum des Saarlandes, Homburg, Saarland Germany
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Cordel H, Tantet C, Stempak T, Billaud E, Mosnier E, Huber F, Florence S, Leclerc D, Freire-Maresca A, de Champs Léger H, Ahouanto M, Linard F, Petruzzi M, Hamel E, Le Lay E, Lydié N, Simon A, Alcouffe L, Vignier N. Addressing sexuality and sexual health with migrants. Practice guidelines. Infect Dis Now 2022; 52:61-67. [DOI: 10.1016/j.idnow.2022.01.005] [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] [Received: 11/21/2021] [Accepted: 01/18/2022] [Indexed: 10/19/2022]
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35
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Clesse C, Rivat M, Simon A, Belot R, Lighezzolo-Alnot J. Période périnatale et Rorschach : normes, indicateurs, mentalisation et perspectives théorico-cliniques. Psychologie Française 2021. [DOI: 10.1016/j.psfr.2021.10.002] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Bingham NS, Rooke S, Park J, Simon A, Zhu W, Zhang X, Batley J, Watts JD, Leighton C, Dahmen KA, Schiffer P. Experimental Realization of the 1D Random Field Ising Model. Phys Rev Lett 2021; 127:207203. [PMID: 34860045 DOI: 10.1103/physrevlett.127.207203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
We have measured magnetic-field-induced avalanches in a square artificial spin ice array of interacting nanomagnets. Starting from the ground state ordered configuration, we imaged the individual nanomagnet moments after each successive application of an incrementally increasing field. The statistics of the evolution of the moment configuration show good agreement with the canonical one-dimensional random field Ising model. We extract information about the microscopic structure of the arrays from our macroscopic measurements of their collective behavior, demonstrating a process that could be applied to other systems exhibiting avalanches.
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Affiliation(s)
- N S Bingham
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
| | - S Rooke
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - J Park
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - A Simon
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
| | - W Zhu
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
| | - X Zhang
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - J Batley
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - J D Watts
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - C Leighton
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - K A Dahmen
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - P Schiffer
- Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Physics, Yale University, New Haven, Connecticut 06511, USA
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Seewald M, Harris LH, Martin LA, Simon A. POSTER ABSTRACTS. Contraception 2021. [DOI: 10.1016/j.contraception.2021.07.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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38
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Safrai M, Hertsberg S, Meir AB, Reubinoff B, Imbar T, Mordechai-Daniel T, Simon A. P–667 Dydrogesterone supplementation in cycles triggered with lone GnRH agonist for final oocyte maturation resulted in an acceptable pregnancy rate. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Can luteal oral Dydrogesterone (Duphaston) supplementation in an antagonist cycle after a lone GnRH agonist trigger rescue the luteal phase, allowing the possibility to peruse with fresh embryo transfer?
Summary answer
Functionality of the luteal phase in an antagonist cycle after a lone GnRH agonist trigger can be restored by adding Duphaston to conventional luteal support.
What is known already
Ovarian hyperstimulation syndrome (OHSS) is dramatically reduced when using antagonist cycle with lone GnRH agonist trigger before ovum pick up. This trigger induces short luteinizing hormone (LH) and follicle-stimulating hormone (FSH) peaks, associated with reduced progesterone and estrogen levels during the luteal phase. They cause an inadequate luteal phase and a significantly reduced implantation rate leading to a freeze all practice in those cycles.
Study design, size, duration
A retrospective cohort study. The study group (n = 123) included women that underwent in vitro fertilization cycles from January 2017 to May 2020. Patients received a GnRH-antagonist with a lone GnRH-agonist trigger due to imminent OSHH. The control group (n = 374) included patients under 35 years old that, during the same time period, underwent a standard antagonist protocol with a dual trigger of a GnRH-agonist and hCG.
Participants/materials, setting, methods
Study patients were given Dydrogesterone (Duphaston) in addition to micronized progesterone vaginal pills (Utrogestan) for luteal support (Duphaston group). Controls were treated conventionally with Utrogestan for luteal phase support (hCG group). The outcomes measured were pregnancy rate and OHSS events.
Main results and the role of chance
Our study was the first to evaluate the addition of Duphaston to standard luteal phase support in an antagonist cycle triggered by a lone GnRH agonist before a fresh embryo transfer. The mean number of oocytes retrieved and estradiol plasma levels were significantly higher in the Duphaston group than in the hCG group (16.9 ±7.7 vs. 10.8 ± 5.3 and 11658 ± 5280 pmol/L vs. 6048 ± 3059 pmol/L, respectively). The fertilization rate was comparable between the two groups. The mean number of embryos transferred and the clinical pregnancy rate were also comparable between groups (1.5 ± 0.6 vs 1.5 ± 0.5 and 46.3% vs 40.9%, respectively). No OHSS event was reported in either group.
Limitations, reasons for caution
This retrospective study may carry an inherent selection and information bias, derived from medical record coding. An additional limitation was the choice of physician for the lone GnRH trigger, which may have introduced a selection bias and another potential caveat was the relatively small sample size of our study groups.
Wider implications of the findings: The addition of Duphaston to conventional luteal support could effectively salvage the luteal phase without increasing the risk for OHSS. This enables, to peruse in those cycle, with fresh embryo transfer, avoiding the need to freeze all the embryos and postponed embryo transfer. Leading to lower psychological burden and costs.
Trial registration number
0632–20-HMO
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Affiliation(s)
- M Safrai
- Hadassah-Hebrew University Medical Center- Ein-Kerem, Obstetrics and Gynecology, Jerusalem, Israel
| | - S Hertsberg
- Hadassah-Hebrew University Medical Center- Ein-Kerem, Obstetrics and Gynecology, Jerusalem, Israel
| | - A Be Meir
- Hadassah-Hebrew University Medical Center- Ein-Kerem, Obstetrics and Gynecology, Jerusalem, Israel
| | - B Reubinoff
- Hadassah-Hebrew University Medical Center- Ein-Kerem, Obstetrics and Gynecology, Jerusalem, Israel
| | - T Imbar
- Hadassah-Hebrew University Medical Center- Ein-Kerem, Obstetrics and Gynecology, Jerusalem, Israel
| | - T Mordechai-Daniel
- Hadassah-Hebrew University Medical Center- Ein-Kerem, Obstetrics and Gynecology, Jerusalem, Israel
| | - A Simon
- Hadassah-Hebrew University Medical Center- Ein-Kerem, Obstetrics and Gynecology, Jerusalem, Israel
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Chateauneuf J, Simon A, Vignier N, Stempak-Droissart T, Penot P. Dépistage par TROD VIH des personnes consultant en CPEF et de leurs accompagnants. Infect Dis Now 2021. [DOI: 10.1016/j.idnow.2021.06.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Bellec J, Rigal L, Jaksic N, Caille P, Lederlin M, Lafond C, Martins R, De Crevoisier R, Simon A. PD-0891 Cardio-respiratory ITV for cardiac radioablation in case of ventricular tachycardia. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07170-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Strzelczyk A, Schubert-Bast S, Zöllner J, Simon A, Wyatt G, Holland R, Rosenow F. P 55. Epidemiology, Healthcare Resource Use, and Mortality in Patients with Tuberous Sclerosis Complex: A Population-Based Study on German Health Insurance Data. Clin Neurophysiol 2021. [DOI: 10.1016/j.clinph.2021.02.371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hufnagel M, Simon A, Trapp S, Liese J, Reinke S, Klein W, Parlowsky T, Pfeil J, Renk H, Berner R, Hübner J, Kummer S, Tillmann R. Erratum zu: Antibiotische Standardtherapie häufiger Infektionskrankheiten in der ambulanten Pädiatrie. Monatsschr Kinderheilkd 2021. [DOI: 10.1007/s00112-021-01221-w] [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: 10/20/2022]
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Nottmeier C, Liao N, Simon A, Decker MG, Luther J, Schweizer M, Yorgan T, Kaucka M, Bockamp E, Kahl-Nieke B, Amling M, Schinke T, Petersen J, Koehne T. Wnt1 Promotes Cementum and Alveolar Bone Growth in a Time-Dependent Manner. J Dent Res 2021; 100:1501-1509. [PMID: 34009051 PMCID: PMC8649456 DOI: 10.1177/00220345211012386] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The WNT/β-catenin signaling pathway plays a central role in the biology
of the periodontium, yet the function of specific extracellular WNT
ligands remains poorly understood. By using a
Wnt1-inducible transgenic mouse model targeting
Col1a1-expressing alveolar osteoblasts,
odontoblasts, and cementoblasts, we demonstrate that the WNT ligand
WNT1 is a strong promoter of cementum and alveolar bone formation in
vivo. We induced Wnt1 expression for 1, 3, or 9 wk in
Wnt1Tg mice and analyzed them at the age of 6 wk and 12 wk.
Micro–computed tomography (CT) analyses of the mandibles revealed a
1.8-fold increased bone volume after 1 and 3 wk of
Wnt1 expression and a 3-fold increased bone
volume after 9 wk of Wnt1 expression compared to
controls. In addition, the alveolar ridges were higher in Wnt1Tg mice
as compared to controls. Nondecalcified histology demonstrated
increased acellular cementum thickness and cellular cementum volume
after 3 and 9 wk of Wnt1 expression. However, 9 wk of
Wnt1 expression was also associated with
periodontal breakdown and ectopic mineralization of the pulp. The
composition of this ectopic matrix was comparable to those of cellular
cementum as demonstrated by quantitative backscattered electron
imaging and immunohistochemistry for noncollagenous proteins. Our
analyses of 52-wk-old mice after 9 wk of Wnt1
expression revealed that Wnt1 expression affects
mandibular bone and growing incisors but not molar teeth, indicating
that Wnt1 influences only growing tissues. To further
investigate the effect of Wnt1 on cementoblasts, we
stably transfected the cementoblast cell line (OCCM-30) with a vector
expressing Wnt1-HA and performed proliferation as
well as differentiation experiments. These experiments demonstrated
that Wnt1 promotes proliferation but not
differentiation of cementoblasts. Taken together, our findings
identify, for the first time, Wnt1 as a critical
regulator of alveolar bone and cementum formation, as well as provide
important insights for harnessing the WNT signal pathway in
regenerative dentistry.
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Affiliation(s)
- C Nottmeier
- Department of Orthodontics, University Medical Center Hamburg, Hamburg, Germany.,Department of Orthodontics, University of Leipzig Medical Center, Leipzig, Germany
| | - N Liao
- Department of Orthodontics, University Medical Center Hamburg, Hamburg, Germany.,Department of Orthodontics, College of Stomatology, North China University of Science and Technology, Tangshan, China
| | - A Simon
- Department of Orthodontics, University Medical Center Hamburg, Hamburg, Germany
| | - M G Decker
- Department of Orthodontics, University Medical Center Hamburg, Hamburg, Germany
| | - J Luther
- Department of Osteology and Biomechanics, University Medical Center Hamburg, Hamburg, Germany
| | - M Schweizer
- ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - T Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg, Hamburg, Germany
| | - M Kaucka
- Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - E Bockamp
- Institute for Translational Immunology and Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - B Kahl-Nieke
- Department of Orthodontics, University Medical Center Hamburg, Hamburg, Germany
| | - M Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg, Hamburg, Germany
| | - T Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg, Hamburg, Germany
| | - J Petersen
- Department of Orthodontics, University of Leipzig Medical Center, Leipzig, Germany.,Department of Osteology and Biomechanics, University Medical Center Hamburg, Hamburg, Germany
| | - T Koehne
- Department of Orthodontics, University Medical Center Hamburg, Hamburg, Germany.,Department of Orthodontics, University of Leipzig Medical Center, Leipzig, Germany
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Vela MM, Bowles C, Raj B, Robinson D, Simon A. Agreement between Anti-Factor Xa and Activated Partial Thromboplastin Time Measurements in Syncardia Total Artificial Heart Recipients Receiving Postoperative Anticoagulation with Unfractionated Heparin. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Sef AV, Sef D, Mohite P, Saez DG, Trkulja V, Raj B, Reed A, Doce AH, Lees N, Mahesh B, De Robertis F, McGovern I, Simon A, Stock U. Early Results after Lung Transplantation in Patients Bridged with Extracorporeal Life Support: Experience from a 7-year Period. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Potapov E, Politis N, Rieger S, Karck M, Weyand M, Walther T, Emrich F, Reichenspurrner H, Bernhadt A, Barten M, Svenarud P, Gummert J, Simon A, Sef D, Doenst T, Tsyganenko D, Falk V. Results of Multicenter Evaluation of Plug Use for LVAD Explantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1176] [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: 10/21/2022] Open
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Toenges R, Greinix H, Lawitschka A, Halter J, Baumgartner A, Simon A, Arends J, Jäger P, Middeke M, Hilgendorf I, Klein S, Wagner-Drouet EM, Schmid C, Bug G, Wolff D. Current practice in nutrition after allogeneic hematopoietic stem cell transplantation - Results from a survey among hematopoietic stem cell transplant centers. Clin Nutr 2021; 40:1571-1577. [PMID: 33744601 DOI: 10.1016/j.clnu.2021.02.030] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Allogeneic hematopoietic stem cell transplantation (alloHSCT) is frequently associated with impaired oral intake and malnutrition, which potentially increases morbidity and mortality. Therefore, nutrition is one of the major challenges in the post-transplant period. METHODS To document the current clinical approach in nutritional treatment, we designed a questionnaire concerning the current practice in nutrition after alloHSCT and distributed it to German speaking centers performing alloHSCT in Germany, Austria and Switzerland between November 2018 and March 2020. Twenty-eight (39%) of 72 contacted centers completed the survey, 23 from Germany, two from Austria and three from Switzerland, representing 50% of alloHSCT activity within the participating countries in 2018. RESULTS All centers reported having nutritional guidelines for patients undergoing alloHSCT, whereby 86% (n = 24) provided a low-microbial diet during the neutropenic phase. The criteria to start parenteral nutrition (PN) directly after alloHSCT seemed to be consistent, 75% (n = 21) of the corresponding centers started PN if the oral nutritional intake or the bodyweight dropped below a certain limit. In the setting of intestinal graft-versus-host disease (GvHD) the current practice appeared to be more heterogenous. About 64% (n = 18) of the centers followed a special diet, added food stepwise modulated by GvHD symptoms, while only four centers regularly stopped oral intake completely (intestinal GvHD grade >1). Half of the centers (54%, n = 15) applied a lactose-free diet, followed by 43% (n = 12) which provided fat- and 18% (n = 5) gluten-free food in patients with intestinal GvHD. Supplementation of micronutrients in acute intestinal GvHD patients was performed by 54% (n = 15) of the centers, whereas vitamin D (89%, n = 25) and vitamin B12 (68%, n = 19) was added regularly independently of the presence of GvHD. Only 5 (18%) participating centers ever observed a food-associated infection during hospitalization, whereas food-associated infections were reported to occur more often in the outpatient setting (64%, n = 18). CONCLUSION The survey documented a general consensus about the need for nutritional guidelines for patients undergoing alloHSCT. However, the nutritional treatment in clinical practice (i.e. lactose-, gluten- or fat-free in intestinal GvHD) as well as the use of food supplements was very heterogeneous. In line with current general recommendations the centers seemed to focus on safe food handling practice rather than providing a strict neutropenic diet. More high-quality data are required to provide evidence-based nutrition to patients during and after alloHSCT.
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Affiliation(s)
- R Toenges
- Department of Medicine, Hematology/Oncology, Goethe-University, 60590 Frankfurt, Germany.
| | - H Greinix
- Division of Hematology, Medical University of Graz, Austria.
| | | | - J Halter
- Dept. of Hematology, University Hospital Basel, Switzerland.
| | - A Baumgartner
- Dept. of Endocrinology, Medical University Klinik Kantonsspital Aarau, Aarau, Switzerland.
| | - A Simon
- Pediatric Oncology and Hematology, Saarland University Hospital, Saar, Homburg, Germany.
| | - J Arends
- Department of Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | - P Jäger
- Department of Hematology, Oncology and Clinical Immunology, University Hospital Duesseldorf, Medical Faculty, Duesseldorf, Germany.
| | - M Middeke
- Dept. of Internal Medicine I, University Hospital Dresden, Dresden, Germany.
| | - I Hilgendorf
- Universitätsklinikum Jena, Klinik für Innere Medizin II, Abteilung für Hämatologie und Internistische Onkologie, Jena, Germany.
| | - S Klein
- III. Medizinische Klinik Hämatologie und Onkologie Universitätsmedizin Mannheim, Mannheim, Germany.
| | - E M Wagner-Drouet
- 3rd Medical Dept., Hematology, Oncology and Pneumology, University Medical Center Mainz, Germany.
| | - C Schmid
- Department of Hematology and Oncology, Universitätsklinikum Augsburg, Augsburg, Germany.
| | - G Bug
- Department of Medicine, Hematology/Oncology, Goethe-University, 60590 Frankfurt, Germany.
| | - D Wolff
- Dept. of Internal Medicine III, University Hospital, Regensburg, Germany.
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Cabon S, Porée F, Cuffel G, Rosec O, Geslin F, Pladys P, Simon A, Carrault G. Voxyvi: A system for long-term audio and video acquisitions in neonatal intensive care units. Early Hum Dev 2021; 153:105303. [PMID: 33453631 DOI: 10.1016/j.earlhumdev.2020.105303] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/04/2020] [Accepted: 12/21/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND In the European Union, 300,000 newborn babies are born prematurely every year. Their care is ensured in Neonatal Intensive Care Units (NICU) where vital signs are constantly monitored. In addition, other descriptors such as motion, facial and vocal activities have been shown to be essential to assess neurobehavioral development. AIM In the scope of the European project Digi-NewB, we aimed to develop and evaluate a new audio-video device designed to non-invasively acquire multi-modal data (audio, video and thermal images), while fitting the wide variety of bedding environment in NICU. METHODS Firstly, a multimodal system and associated software and guidelines to collect data in neonatal intensive care unit were proposed. Secondly, methods for post-evaluation of the acquisition phase were developed, including the study of clinician feedback and a qualitative analysis of the data. RESULTS The deployment of 19 acquisition devices in six French hospitals allowed to record more than 500 newborns of different gestational and postmenstrual ages. After the acquisition phase, clinical feedback was mostly positive. In addition, quality of more than 300 recordings was inspected and showed that 77% of the data is exploitable. In depth, the percentage of sole presence of the newborn was estimated at 62% within recordings. CONCLUSIONS This study demonstrates that audio-video acquisitions are feasible on a large scale in real life in NICU. The experience also allowed us to make a clear observation of the requirements and challenges that will have to be overcome in order to set up audio-video monitoring methods.
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Affiliation(s)
- S Cabon
- Univ Rennes, Inserm, LTSI - UMR 1099, F-35000, France.
| | - F Porée
- Univ Rennes, Inserm, LTSI - UMR 1099, F-35000, France
| | - G Cuffel
- Voxygen, Pleumeur-Bodou F-22560, France
| | - O Rosec
- Voxygen, Pleumeur-Bodou F-22560, France
| | - F Geslin
- CHU Rennes, Rennes F-35000, France
| | - P Pladys
- CHU Rennes, Rennes F-35000, France
| | - A Simon
- Univ Rennes, Inserm, LTSI - UMR 1099, F-35000, France
| | - G Carrault
- Univ Rennes, Inserm, LTSI - UMR 1099, F-35000, France
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50
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Verhulsel M, Simon A, Bernheim-Dennery M, Gannavarapu VR, Gérémie L, Ferraro D, Krndija D, Talini L, Viovy JL, Vignjevic DM, Descroix S. Developing an advanced gut on chip model enabling the study of epithelial cell/fibroblast interactions. Lab Chip 2021; 21:365-377. [PMID: 33306083 PMCID: PMC9930731 DOI: 10.1039/d0lc00672f] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Organoids are widely used as a model system to study gut pathophysiology; however, they fail to fully reproduce the complex, multi-component structure of the intestinal wall. We present here a new gut on chip model that allows the co-culture of primary epithelial and stromal cells. The device has the topography and dimensions of the mouse gut and is based on a 3D collagen I scaffold. The scaffold is coated with a thin layer of laminin to mimic the basement membrane. To maintain the scaffold structure while preserving its cytocompatibility, the collagen scaffold was rigidified by threose-based post-polymerization treatment. This treatment being cytocompatible enabled the incorporation of primary intestinal fibroblasts inside the scaffold, reproducing the gut stromal compartment. We observed that mouse organoids, when deposited into crypts, opened up and epithelialized the scaffold, generating a polarized epithelial monolayer. Proper segregation of dividing and differentiated cells along the crypt-villus axis was achieved under these conditions. Finally, we show that the application of fluid shear stress allows the long-term culture of this intestinal epithelium. Our device represents a new biomimetic tool that captures key features of the gut complexity and could be used to study gut pathophysiology.
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Affiliation(s)
- Marine Verhulsel
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Anthony Simon
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Moencopi Bernheim-Dennery
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | - Venkata Ram Gannavarapu
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Lauriane Gérémie
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | - Davide Ferraro
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | - Denis Krndija
- Institut Curie, CNRS, UMR 144, PSL Research University, 12 rue Lhomond, F-75005 Paris, France.
| | - Laurence Talini
- CNRS, UMR 7615, ESPCI Paris, UPMC, Sorbonne-Universités, PSL Research University, F-75005 Paris, France
| | - Jean-Louis Viovy
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
| | | | - Stéphanie Descroix
- Institut Curie, CNRS, UMR 168, IPGG, PSL Research University, 6 rue Jean Calvin, F-75005 Paris, France.
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