1
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Chang M, Gao F, Gnawali G, Xu H, Dong Y, Meng X, Li W, Wang Z, Lopez B, Carew JS, Nawrocki ST, Lu J, Zhang QY, Wang W. Selective Elimination of Senescent Cancer Cells by Galacto-Modified PROTACs. J Med Chem 2024. [PMID: 38635879 DOI: 10.1021/acs.jmedchem.4c00152] [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: 04/20/2024]
Abstract
Although the selective and effective clearance of senescent cancer cells can improve cancer treatment, their development is confronted by many challenges. As part of efforts designed to overcome these problems, prodrugs, whose design is based on senescence-associated β-galactosidase (SA-β-gal), have been developed to selectively eliminate senescent cells. However, chemotherapies relying on targeted molecular inhibitors as senolytic drugs can induce drug resistance. In the current investigation, we devised a new strategy for selective degradation of target proteins in senescent cancer cells that utilizes a prodrug composed of the SA-β-gal substrate galactose (galacto) and the proteolysis-targeting chimeras (PROTACs) as senolytic agents. Prodrugs Gal-ARV-771 and Gal-MS99 were found to display senolytic indexes higher than those of ARV-771 and MS99. Significantly, results of in vivo studies utilizing a human lung A549 xenograft mouse model demonstrated that concomitant treatment with etoposide and Gal-ARV-771 leads to a significant inhibition of tumor growth without eliciting significant toxicity.
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Affiliation(s)
- Mengyang Chang
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Feng Gao
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Giri Gnawali
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Hang Xu
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Yue Dong
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Xiang Meng
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Wenpan Li
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Zhiren Wang
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Byrdie Lopez
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Jennifer S Carew
- Department of Medicine, University of Arizona, Tucson, Arizona 85721, United States
- University of Arizona Cancer Center, University of Arizona, Tucson, Arizona 85721, United States
| | - Steffan T Nawrocki
- Department of Medicine, University of Arizona, Tucson, Arizona 85721, United States
- University of Arizona Cancer Center, University of Arizona, Tucson, Arizona 85721, United States
| | - Jianqin Lu
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Qing-Yu Zhang
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
| | - Wei Wang
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721, United States
- University of Arizona Cancer Center, University of Arizona, Tucson, Arizona 85721, United States
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2
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Abuter R, Allouche F, Amorim A, Bailet C, Berdeu A, Berger JP, Berio P, Bigioli A, Boebion O, Bolzer ML, Bonnet H, Bourdarot G, Bourget P, Brandner W, Cao Y, Conzelmann R, Comin M, Clénet Y, Courtney-Barrer B, Davies R, Defrère D, Delboulbé A, Delplancke-Ströbele F, Dembet R, Dexter J, de Zeeuw PT, Drescher A, Eckart A, Édouard C, Eisenhauer F, Fabricius M, Feuchtgruber H, Finger G, Förster Schreiber NM, Garcia P, Garcia Lopez R, Gao F, Gendron E, Genzel R, Gil JP, Gillessen S, Gomes T, Gonté F, Gouvret C, Guajardo P, Guieu S, Hackenberg W, Haddad N, Hartl M, Haubois X, Haußmann F, Heißel G, Henning T, Hippler S, Hönig SF, Horrobin M, Hubin N, Jacqmart E, Jocou L, Kaufer A, Kervella P, Kolb J, Korhonen H, Lacour S, Lagarde S, Lai O, Lapeyrère V, Laugier R, Le Bouquin JB, Leftley J, Léna P, Lewis S, Liu D, Lopez B, Lutz D, Magnard Y, Mang F, Marcotto A, Maurel D, Mérand A, Millour F, More N, Netzer H, Nowacki H, Nowak M, Oberti S, Ott T, Pallanca L, Paumard T, Perraut K, Perrin G, Petrov R, Pfuhl O, Pourré N, Rabien S, Rau C, Riquelme M, Robbe-Dubois S, Rochat S, Salman M, Sanchez-Bermudez J, Santos DJD, Scheithauer S, Schöller M, Schubert J, Schuhler N, Shangguan J, Shchekaturov P, Shimizu TT, Sevin A, Soulez F, Spang A, Stadler E, Sternberg A, Straubmeier C, Sturm E, Sykes C, Tacconi LJ, Tristram KRW, Vincent F, von Fellenberg S, Uysal S, Widmann F, Wieprecht E, Wiezorrek E, Woillez J, Zins G. A dynamical measure of the black hole mass in a quasar 11 billion years ago. Nature 2024; 627:281-285. [PMID: 38286342 DOI: 10.1038/s41586-024-07053-4] [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] [Received: 08/07/2023] [Accepted: 01/09/2024] [Indexed: 01/31/2024]
Abstract
Tight relationships exist in the local Universe between the central stellar properties of galaxies and the mass of their supermassive black hole (SMBH)1-3. These suggest that galaxies and black holes co-evolve, with the main regulation mechanism being energetic feedback from accretion onto the black hole during its quasar phase4-6. A crucial question is how the relationship between black holes and galaxies evolves with time; a key epoch to examine this relationship is at the peaks of star formation and black hole growth 8-12 billion years ago (redshifts 1-3)7. Here we report a dynamical measurement of the mass of the black hole in a luminous quasar at a redshift of 2, with a look back in time of 11 billion years, by spatially resolving the broad-line region (BLR). We detect a 40-μas (0.31-pc) spatial offset between the red and blue photocentres of the Hα line that traces the velocity gradient of a rotating BLR. The flux and differential phase spectra are well reproduced by a thick, moderately inclined disk of gas clouds within the sphere of influence of a central black hole with a mass of 3.2 × 108 solar masses. Molecular gas data reveal a dynamical mass for the host galaxy of 6 × 1011 solar masses, which indicates an undermassive black hole accreting at a super-Eddington rate. This suggests a host galaxy that grew faster than the SMBH, indicating a delay between galaxy and black hole formation for some systems.
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Affiliation(s)
- R Abuter
- European Southern Observatory, Garching, Germany
| | - F Allouche
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - A Amorim
- Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
- CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa, Portugal
| | - C Bailet
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - A Berdeu
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - J-P Berger
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - P Berio
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - A Bigioli
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - O Boebion
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - M-L Bolzer
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
- Department of Physics, Technical University Munich, Garching, Germany
- Univ. Lyon, Univ. Lyon 1, ENS de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, Saint-Genis-Laval, France
| | - H Bonnet
- European Southern Observatory, Garching, Germany
| | - G Bourdarot
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - P Bourget
- European Southern Observatory, Santiago, Chile
| | - W Brandner
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - Y Cao
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - R Conzelmann
- European Southern Observatory, Garching, Germany
| | - M Comin
- European Southern Observatory, Garching, Germany
| | - Y Clénet
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - B Courtney-Barrer
- European Southern Observatory, Santiago, Chile
- Research School of Astronomy and Astrophysics, College of Science, Australian National University, Canberra, Australian Capital Territory, Australia
| | - R Davies
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - D Defrère
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - A Delboulbé
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | | | - R Dembet
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - J Dexter
- Department of Astrophysical & Planetary Sciences, JILA, University of Colorado Boulder, Boulder, CO, USA
| | | | - A Drescher
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - A Eckart
- Max Planck Institute for Radio Astronomy, Bonn, Germany
- 1st Institute of Physics, University of Cologne, Cologne, Germany
| | - C Édouard
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - F Eisenhauer
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - M Fabricius
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - H Feuchtgruber
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - G Finger
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | | | - P Garcia
- CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa, Portugal
- Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - R Garcia Lopez
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland
| | - F Gao
- Max Planck Institute for Radio Astronomy, Bonn, Germany
| | - E Gendron
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - R Genzel
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
- Departments of Physics, University of California, Berkeley, Berkeley, CA, USA
- Department of Astronomy, University of California, Berkeley, Berkeley, CA, USA
| | - J P Gil
- European Southern Observatory, Santiago, Chile
| | - S Gillessen
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - T Gomes
- CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa, Portugal
- Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - F Gonté
- European Southern Observatory, Garching, Germany
| | - C Gouvret
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - P Guajardo
- European Southern Observatory, Santiago, Chile
| | - S Guieu
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - W Hackenberg
- European Southern Observatory, Garching, Germany
| | - N Haddad
- European Southern Observatory, Santiago, Chile
| | - M Hartl
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - X Haubois
- European Southern Observatory, Santiago, Chile
| | - F Haußmann
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - G Heißel
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
- Advanced Concepts Team, European Space Agency, TEC-SF, ESTEC, Noordwijk, The Netherlands
| | - Th Henning
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - S Hippler
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - S F Hönig
- School of Physics and Astronomy, University of Southampton, Southampton, UK
| | - M Horrobin
- 1st Institute of Physics, University of Cologne, Cologne, Germany
| | - N Hubin
- European Southern Observatory, Garching, Germany
| | - E Jacqmart
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - L Jocou
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - A Kaufer
- European Southern Observatory, Santiago, Chile
| | - P Kervella
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - J Kolb
- European Southern Observatory, Garching, Germany
| | - H Korhonen
- European Southern Observatory, Santiago, Chile
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - S Lacour
- European Southern Observatory, Garching, Germany
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - S Lagarde
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - O Lai
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - V Lapeyrère
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - R Laugier
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | | | - J Leftley
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - P Léna
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - S Lewis
- European Southern Observatory, Garching, Germany
| | - D Liu
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - B Lopez
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - D Lutz
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - Y Magnard
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - F Mang
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
- Department of Physics, Technical University Munich, Garching, Germany
| | - A Marcotto
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - D Maurel
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - A Mérand
- European Southern Observatory, Garching, Germany
| | - F Millour
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - N More
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - H Netzer
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
| | - H Nowacki
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - M Nowak
- Institute of Astronomy, University of Cambridge, Cambridge, UK
| | - S Oberti
- European Southern Observatory, Garching, Germany
| | - T Ott
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - L Pallanca
- European Southern Observatory, Santiago, Chile
| | - T Paumard
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - K Perraut
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - G Perrin
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - R Petrov
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - O Pfuhl
- European Southern Observatory, Garching, Germany
| | - N Pourré
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - S Rabien
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - C Rau
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - M Riquelme
- European Southern Observatory, Garching, Germany
| | - S Robbe-Dubois
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - S Rochat
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - M Salman
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - J Sanchez-Bermudez
- Max Planck Institute for Astronomy, Heidelberg, Germany
- Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - D J D Santos
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - S Scheithauer
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - M Schöller
- European Southern Observatory, Garching, Germany
| | - J Schubert
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - N Schuhler
- European Southern Observatory, Santiago, Chile
| | - J Shangguan
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | | | - T T Shimizu
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany.
| | - A Sevin
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | - F Soulez
- Univ. Lyon, Univ. Lyon 1, ENS de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, Saint-Genis-Laval, France
| | - A Spang
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
| | - E Stadler
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - A Sternberg
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel
- Center for Computational Astrophysics, Flatiron Institute, New York, NY, USA
| | - C Straubmeier
- 1st Institute of Physics, University of Cologne, Cologne, Germany
| | - E Sturm
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - C Sykes
- School of Physics and Astronomy, University of Southampton, Southampton, UK
| | - L J Tacconi
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | | | - F Vincent
- LESIA - Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, Meudon, France
| | | | - S Uysal
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - F Widmann
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - E Wieprecht
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - E Wiezorrek
- Max Planck Institute for Extraterrestrial Physics, Garching, Germany
| | - J Woillez
- European Southern Observatory, Garching, Germany
| | - G Zins
- European Southern Observatory, Garching, Germany
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Gao F, Chang M, Meng X, Xu H, Gnawali G, Dong Y, Lopez B, Wang W. Site-Selective Modification of Secondary Amine Moieties on Native Peptides, Proteins, and Natural Products with Ynones. Bioconjug Chem 2023; 34:1553-1562. [PMID: 37646420 DOI: 10.1021/acs.bioconjchem.3c00246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Site-selective modification of biologically relevant secondary amines in peptides, proteins, and natural products has been challenging due to the similar reactivity between primary and secondary amines. Even for the secondary amines, their reactivities are significantly influenced by their structures and environment. Herein, we report a ynone Michael bioconjugation method for selective modification of secondary amines in unprotected peptides and proteins and complex natural products. We show that fine tuning the electronic effect of the ynones enables controlling the Michael acceptor reactivity for the selective reaction with the structurally different secondary amines in densely functionalized complex structures and complicated biological environment.
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Affiliation(s)
- Feng Gao
- Department of Pharmacology and Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, 1703 E Mabel Street, Tucson, Arizona 85721, United States
| | - Mengyang Chang
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E University Blvd., Tucson, Arizona 85721, United States
| | - Xiang Meng
- Department of Pharmacology and Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, 1703 E Mabel Street, Tucson, Arizona 85721, United States
| | - Hang Xu
- Department of Pharmacology and Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, 1703 E Mabel Street, Tucson, Arizona 85721, United States
| | - Giri Gnawali
- Department of Pharmacology and Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, 1703 E Mabel Street, Tucson, Arizona 85721, United States
| | - Yue Dong
- Department of Pharmacology and Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, 1703 E Mabel Street, Tucson, Arizona 85721, United States
| | - Byrdie Lopez
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E University Blvd., Tucson, Arizona 85721, United States
| | - Wei Wang
- Department of Pharmacology and Toxicology, R. Ken Coit College of Pharmacy, University of Arizona, 1703 E Mabel Street, Tucson, Arizona 85721, United States
- Department of Chemistry and Biochemistry, University of Arizona, 1306 E University Blvd., Tucson, Arizona 85721, United States
- University of Arizona Cancer Center, University of Arizona, 3838 N. Campbell Avenue, Tucson, Arizona 85719, United States
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Angeli E, Reese-Petersen A, Gonzalez A, Lopez B, Ravassa S, Genovese F, Karsdal M, Diaz J. Type III collagen formation is significantly associated with risk of outcome in HFpEF patients but loses its significant association with underlying AF. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Heart failure with preserved ejection fraction (HFpEF) is the most common type of heart failure, associated with high morbidity and mortality. Atrial fibrillation (AF) has been associated with structural remodelling and fibrosis and can coexist with HFpEF. Type III collagen is the second most abundant collagen in the heart wall and has been associated with cardiac fibrosis. It has been previously shown that type III collagen formation, measured by PRO-C3, is prognostic for all-cause mortality in HFpEF.
Purpose
In this study, we aimed at investigating if the prognostic power of PRO-C3 in relation to all-cause mortality would be affected by underlying AF in HFpEF patients.
Methods
The analysis included 166 individuals with hypertensive HFpEF. The patients were classified in three groups according to NYHA classification, 43.2% in NYHA Class II, 52.5% NYHA Class III and 2.5% NYHA Class IV. A previous history of AF was present in 53.4% of the patients. Cardiac function was assessed by echocardiography and standard clinical measures. Type III collagen formation was evaluated by means of ELISA with the biomarker PRO-C3, which targets the released N-terminal pro-peptide of type III collagen.
Results
Levels of PRO-C3 were significantly elevated in HFpEF patients with AF (p=0.0063). PRO-C3 was significantly predictive of all-cause mortality in HFpEF patients (AUC=0.643, p=0.0053), but lost its significant association when factoring in AF (AUC=0.581, p=0.235). There was an increased risk of all-cause mortality (p=0.0089) but not statistically significant differences in HFpEF patients with AF (p=0.178) with increasing tertiles of PRO-C3.
Conclusions
Type III collagen formation as measured by PRO-C3, was increased in patients with HFpEF and previously diagnosed AF. However, while PRO-C3 can be predictive of all-cause mortality in HFpEF patients, it lacks predicting ability when AF is considered. The presented data suggest a potential role of increased type III collagen formation in HFpEF patients with adverse outcomes, which is consistent with the presence of increased fibrosis, and can potentially be used as a tool of risk stratification.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): Nordic Bioscience A/S
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Affiliation(s)
- E Angeli
- Nordic Bioscience A/S , Herlev , Denmark
| | | | - A Gonzalez
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA , Pamplona , Spain
| | - B Lopez
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA , Pamplona , Spain
| | - S Ravassa
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA , Pamplona , Spain
| | - F Genovese
- Nordic Bioscience A/S , Herlev , Denmark
| | - M Karsdal
- Nordic Bioscience A/S , Herlev , Denmark
| | - J Diaz
- Program of Cardiovascular Diseases, CIMA Universidad de Navarra and IdiSNA , Pamplona , Spain
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Du Y, Christopher T, Lopez B, Lau W, Wang Y, Ma X. 1 Reversing miRNA-Suppressed Cardioprotective Cardiokine Expression as a Novel Intervention Against Sleep Breathing Disorders-Exacerbated Post-MI Remodeling. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.023] [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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Romero-Gonzalez G, Diaz-Dorronsoro I, Ravassa S, Lopez B, Gonzalez A, Diez J. Association of soluble ST2 and right ventricular dysfunction with mortality in chronic hemodialysis patients. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
End stage kidney disease (ESKD), is a triggering and facilitating factor for cardiac remodelling (i.e., morphologic hypertrophy and/or dilatation associated with deterioration of systolic and/or diastolic function) that contribute to heart failure (HF). RV dysfunction (RVD) has been demonstrated to predict mortality in ESKD patients.
Purpose
The present study aimed to investigate the potential associations between RVD and circulating biomarkers of myocardial inflammation and fibrosis with all-cause mortality in HD patients.
Method
We performed a retrospective single-centre cohort study of prevalent patients admitted in a chronic HD program for more than 3 months. Clinical characteristics and echocardiographic parameters were assessed in all patients. Pre-dialysis blood samples for measurement of inflammatory (e.g., C reactive protein, interleukin-1, interleukin-18) and fibrotic (e.g., soluble suppression of tumorigenesis-2 [sST2], galectin-3, C-terminal pro-peptide of procollagen type I and N-terminal pro-peptide of procollagen type III) biomarkers were collected. RVD was defined using tricuspid annular plane systolic excursion (TAPSE) <1.7 cm or pulsed Doppler peak annular velocity (S') <9.5 cm/s. The ability of sST2 to discriminate between mortality was assessed using AuROC curve.
Results
We enrolled forty-eight patients, mean patients age was 74 (64 – 79)years, and 62.5% were males. 95.8% of the patients had high blood pressure, and at least 70.8% had HF criteria. About 52.1% of the patients were on OnLine HDF. Regarding the echocardiogram parameters, 56.3% had no functional heart disease, 10.4% had LVD (LVEF ≤45% and diastolic dysfunction ≥ grade 2), and 33.3% had RVD (TAPSE <17mm and/or S'<9.5cm/s), with or without LVD. Mortality was higher 45.5% (log-rank, p=0.003) in patients with RVD as diagnosed by S' than in patients without RVD. No difference in mortality was observed for RVD defined by TAPSE. There were no differences in the morphology and function parameters of the left ventricle between patients with and without RVD. From all biomarkers measured only sST2 was associated with RVD. Indeed, an age- and sex-adjusted analyses showed that doubling of sST2 was inversely associated with a decreased in S' (estimate = −2.03, 95% CI [−3.04 to −1.00] cm/s; P=0.002). Mortality was increased in patients with sST2 ≥40.45 ng/mL compared to patients with sST2 <40.45 ng/mL (66.7% vs. 18.9%, log-rank; p=0.004).
Conclusion
This preliminary data would suggest that patients on chronic HD, circulating levels of sST2 were independently associated with RVD. In addition, elevated sST2 levels and RVD were associated with increased all-cause mortality. The myocardial pro-remodelling effect of sST2 in HD patients with RVD warrants further investigation.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - I Diaz-Dorronsoro
- University of Navarra Clinic, Cardiology Department, Pamplona, Spain
| | - S Ravassa
- Center for Applied Medical Research, Cardiovascular diseases, Pamplona, Spain
| | - B Lopez
- Center for Applied Medical Research, Cardiovascular diseases, Pamplona, Spain
| | - A Gonzalez
- Center for Applied Medical Research, Cardiovascular diseases, Pamplona, Spain
| | - J Diez
- Center for Applied Medical Research, Cardiovascular diseases, Pamplona, Spain
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7
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Reese-Petersen A, Gonzalez A, Lopez B, Ravassa S, Karsdal M, Genovese F, Diez J. Endotrophin is significantly associated with disease severity and increased risk of adverse outcome in HFpEF but not in HFrEF patients. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
The global burden of heart failure (HF), with either reduced (HFrEF) or preserved (HFpEF) ejection fraction, has increased dramatically over the past years, and HFpEF is projected to become the dominant type of HF. Fibrogenesis, promoted by fibroblast activity, plays an important role in the pathology of HF regardless of subtype, causing impaired cardiac function. Endotrophin is a bioactive molecule released from collagen type VI during its maturation, and it is a marker of fibroblast activity. The aim of this post-hoc analysis was to confirm the previously observed prognostic potential of endotrophin (measured by PRO-C6) for adverse outcome in HFpEF and to test its prognostic abilities in HFrEF.
Methods
234 patients with hypertension and either HFrEF (30.3%) or HFpEF (69.7%) were included for analysis. 43.2% were NYHA Class II, 52.5% NYHA Class III and 2.5% NYHA Class IV. 53.4% of patients had a previous history of atrial fibrillation. The cohort did not include diabetic patients. Cardiac function was assessed by echocardiography and standard clinical measures, including left ventricle ejection fraction (EF), blood pressure (BP) and measurement of N-terminal natriuretic brain-peptide (NT-proBNP). Circulating endotrophin was quantified at baseline in serum by means of an enzyme-linked immunosorbent assay, PRO-C6.
Results
PRO-C6 levels increased significantly with disease severity in HFpEF patients (NYHA Class III vs II, p=0.0003), but not in HFrEF patients (NYHA Class III vs II, p=0.33). In HFpEF patients, PRO-C6 was able to discriminate between patients that were hospitalized for HF (AUC=0.69, p<0.001), died from cardiovascular (CV) causes (AUC=0.74, p<0.001), or by any other cause (AUC=0.73, p<0.001). PRO-C6 was not associated with none of these outcomes in HFrEF patients (AUC=0.56, p=0.42; AUC=0.53, p=0.73; AUC=0.56, p=0.53, respectively). Adding PRO-C6 to a risk prediction model containing age, sex, body mass index and systolic BP significantly increased the discriminatory power of the model for mortality (deltaAUC=0.037, p=0.04). When looking at patients stratified in PRO-C6 tertiles, patients in the upper tertile had a significantly higher risk of mortality (p<0.0001, hazard ratios 3 vs 1=4.1, 3 vs 2=3.5, respectively) and HF hospitalization (p<0.0001, hazard ratio 3 vs 1=4.4, 3 vs 2=1.6, respectively) compared to tertiles 1 and 2.
Conclusion
In this population of hypertensive HF patients, circulating endotrophin, measured by PRO-C6, was increased with increasing disease severity, and associated with a higher risk of adverse outcome in HFpEF, but not in HFrEF patients. The data presented here suggest a potential role of endotrophin in HFpEF pathophysiology and further underline the differences between HFpEF and HFrEF. These data confirm previous observations, and strengthen the usefulness of endotrophin, measured by the PRO-C6 biomarker, as a prognostic tool aiding in assessment of HFpEF patients.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | | | | | | | - M Karsdal
- Nordic Bioscience, Copenhagen, Denmark
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8
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Moore J, Lakshmanan S, Kinninger A, Sheppard J, Spiers S, Prusty B, Lopez B, Agbalog J, Budoff M. Coronary Plaque Burden Is Similar Between Young Female Adults With Systemic Lupus Erythematosus And Type 2 Diabetes Mellitus. J Cardiovasc Comput Tomogr 2021. [DOI: 10.1016/j.jcct.2021.06.242] [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: 11/27/2022]
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9
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Vera Sainz A, Cecconi A, Martinez Vives P, Ximenez Carrillo A, Aguirre C, Ramos C, Benedicto A, Diego G, Dominguez L, Lopez B, Rojas A, Gamarra A, Vivancos J, Jimenez Borreguero LJ, Alfonso F. Predictors of atrial fibrillation in patients with cryptogenic stroke and fifteen-days electrocardiographic monitoring. Preliminary results of the DECRYPTORING study. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
onbehalf
DECRYPTORING study
Introduction
Cryptogenic stroke (CS) represents up to 30% of all stroke types. In one third of CS, atrial fibrillation (AF) is identified as the underlying cause. Predictors of AF in the setting of CS have been described, however these findings were based on retrospective studies and with maximum ECG monitoring of 72 hours. To overcome these limitations, we designed the prospective Decryptoring study whose objective is to create a comprehensive predictive model for AF in patients with CS.
Methods
From April 2019, 41 consecutive patients with a CS and age > 60 years were included. On admission, a transthoracic echocardiogram with 3D volume and left atrial (LA) strain was performed. All patients were monitored with a 15-day ECG-Holter after discharge. Patients were classified according to AF detection.
Results
AF was detected in 9 patients (22%). Patients with AF were older (75.9 ± 8 vs. 81.9 ± 4.3 years, p = 0.041). There was no difference in T-troponin levels. NTproBNP was higher in the group with AF (350 ± 586 pg / ml vs. 1084 ± 1416 pg / ml, p = 0.018). Regarding LA strain, patients with AF presented reservoir LA strain (25.5 ± 8.2% vs 17.4 ± 4.3%; p = 0.006) and conduct LA strain (12 ± 5.2% vs 7.2 ± 1.5%; p = 0.01) lower than patients without AF. There were no differences in contraction LA strain or other echocardiographic variables. The risk of developing AF was higher in patients with NTproBNP> 165 pg / ml (OR 11.3 [95% CI 1.2-102.9] p = 0.031), LA reservoir strain <19.1% (OR 7.7 [IC 95 % 1.5-40.0] p = 0.016) and LA conduct strain <9.1% (OR 7.8 [95% CI 1.3-45.0] p = 0.022) (Table).
Conclusions
This prospective study, demonstrates that high NTproBNP, low reservoir LA strain and low conduct LA strain are associated with underlying AF in patients with cryptogenic stroke.
No AF (n = 32) AF (n = 9) P value Age (years) 75.9 ± 8 81.9 ± 4.3 p = 0.041 NTPROBNP (pg/ml) 350 ± 586 1084 ± 1416 P = 0.018 LA indexed diastolic volume (ml/m2) 30 ± 11.8 33.8 ± 9.8 P = 0.35 LA EF (%) 45 ± 16.7 45 ± 12.8 P = 1 Reservoir LA strain (%) 25.5± 8.2 17.4± 4.3 P = 0.006 Conduct LA strain (%) 12 ± 5.2 7.2 ± 1.5 P = 0.01 Contraction LA strain (%) 13.5 ±5.3 10.2± 3.9 P = 0.10 NTPROBNP > 165 pg/ml 12 (41%) 8 (89%) OR 11.3 [IC 95% 1.2-102.9]; p = 0.031 Reservoir LA strain <19.1% 6 (20%) 6 (67%) OR 7.7 [IC 95% 1.5-40.0]; p = 0.016 Conduct LA strain <9.1% 9 (31%) 7 (78%) OR 7.8 [IC 95% 1.3-45.1]; p = 0.022
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Affiliation(s)
- A Vera Sainz
- University Hospital De La Princesa, Madrid, Spain
| | - A Cecconi
- University Hospital De La Princesa, Madrid, Spain
| | | | | | - C Aguirre
- University Hospital De La Princesa, Madrid, Spain
| | - C Ramos
- University Hospital De La Princesa, Madrid, Spain
| | - A Benedicto
- University Hospital De La Princesa, Madrid, Spain
| | - G Diego
- University Hospital De La Princesa, Madrid, Spain
| | - L Dominguez
- University Hospital De La Princesa, Madrid, Spain
| | - B Lopez
- University Hospital De La Princesa, Madrid, Spain
| | - A Rojas
- University Hospital De La Princesa, Madrid, Spain
| | - A Gamarra
- University Hospital De La Princesa, Madrid, Spain
| | - J Vivancos
- University Hospital De La Princesa, Madrid, Spain
| | | | - F Alfonso
- University Hospital De La Princesa, Madrid, Spain
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Bunting SY, Lapworth DJ, Crane EJ, Grima-Olmedo J, Koroša A, Kuczyńska A, Mali N, Rosenqvist L, van Vliet ME, Togola A, Lopez B. Emerging organic compounds in European groundwater. Environ Pollut 2021; 269:115945. [PMID: 33261962 DOI: 10.1016/j.envpol.2020.115945] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/23/2020] [Accepted: 10/25/2020] [Indexed: 06/12/2023]
Abstract
In Europe, emerging organic compounds (EOCs) in groundwater is a growing research area. Prioritisation for monitoring EOCs in Europe was formalised in 2019 through the development of the first voluntary groundwater watch list (GWWL). Despite this, groundwater occurrence data in the peer reviewed literature for Europe has not been reviewed to date. Questions surrounding the effect, toxicity, movement in the subsurface and unsaturated zone make the process of regulating EOC use difficult. The aim in Europe is to develop a unified strategy for the classification, and prioritisation of EOCs to be monitored in groundwater. This paper compiles evidence from the recent published studies from across Europe, since 2012, when the last major literature global review of EOCs in groundwater took place. A total of 39 studies were identified for review based on specific selection criteria (geography, publication date, sample size>10, inclusion of EOCs data). Data on specific compounds, and associated meta-data, are compiled and reviewed. The two most frequently detected EOCs, carbamazepine and caffeine, occurred in groundwater at concentrations of up to 2.3 and 14.8 μg/L, respectively. The most frequently reported category of compounds were 'Pharmaceuticals'; a highly studied group with 135 compounds identified within 31 of the 39 studies. In Europe, the majority of reviewed studies (23) were at a regional scale, looking specifically at EOCs in a specific city or aquifer. The use of analytical methods is not uniform across Europe, and this inevitably influences the current assessment of EOCs in groundwater. A correlation between the number of compounds analysed for, and the number detected in groundwater highlights the need for further studies, especially larger-scale studies throughout Europe. For the development of EU and national regulation, further work is required to understand the occurrence and impacts of EOCs in groundwater throughout Europe and elsewhere.
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Affiliation(s)
- S Y Bunting
- British Geological Survey, Maclean Building, Wallingford, OX10 8BB, UK.
| | - D J Lapworth
- British Geological Survey, Maclean Building, Wallingford, OX10 8BB, UK
| | - E J Crane
- British Geological Survey, Maclean Building, Wallingford, OX10 8BB, UK
| | | | - A Koroša
- Geological Survey of Slovenia, Department of Hydrogeology, Dimičeva ulica 14, Ljubljana, Slovenia
| | - A Kuczyńska
- Polish Geological Institute, National Research Institute, ul. Rakowiecka 4, 00-975, Warsaw, Poland
| | - N Mali
- Geological Survey of Slovenia, Department of Hydrogeology, Dimičeva ulica 14, Ljubljana, Slovenia
| | - L Rosenqvist
- Geological Survey of Sweden, Box 670, SE-751 28, Uppsala, Sweden
| | - M E van Vliet
- TNO Geological Survey of the Netherlands, Utrecht, the Netherlands
| | - A Togola
- BRGM, (French Geological Survey) BP 6009, 45060, Orléans Cedex 2, France
| | - B Lopez
- BRGM, (French Geological Survey) BP 6009, 45060, Orléans Cedex 2, France
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11
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Venturi S, Sharma MP, Lopez B, Panesi M. Data-Inspired and Physics-Driven Model Reduction for Dissociation: Application to the O 2 + O System. J Phys Chem A 2020; 124:8359-8372. [PMID: 32886505 DOI: 10.1021/acs.jpca.0c04516] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work presents an in-depth discussion on the nonequilibrium dissociation of O2 molecules colliding with O atoms, combining quasi-classical trajectory calculations, master equation, and dimensionality reduction. A rovibrationally resolved database for all of the elementary collisional processes is constructed by including all nine adiabatic electronic states of O3 in the QCT calculations. A detailed analysis of the ab initio data set reveals that for a rovibrational level, the probability of dissociating is mostly dictated by its deficit in internal energy compared to the centrifugal barrier. Because of the assumption of rotational equilibrium, the conventional vibrational-specific calculations fail to characterize such a dependence. Based on this observation, a new physics-based grouping strategy for application to coarse-grained models is proposed. By relying on a hybrid technique made of rovibrationally resolved excitation coupled to coarse-grained dissociation, the new approach is compared to the vibrational-specific model and the direct solution of the rovibrational state-to-state master equation. Simulations are performed in a zero-dimensional isothermal and isochoric chemical reactor for a wide range of temperatures (1500-20,000 K). The study shows that the main contribution to the model inadequacy of vibrational-specific approaches originates from the incapability of characterizing dissociation, rather than the energy transfers. Even when constructed with only twenty groups, the new reduced-order model outperforms the vibrational-specific one in predicting all of the QoIs related to dissociation kinetics. At the highest temperature, the accuracy in the mole fraction is improved by 2000%.
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Affiliation(s)
- S Venturi
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - M P Sharma
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - B Lopez
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - M Panesi
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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12
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Coquel F, Silva MJ, Técher H, Zadorozhny K, Sharma S, Nieminuszczy J, Mettling C, Dardillac E, Barthe A, Schmitz AL, Promonet A, Cribier A, Sarrazin A, Niedzwiedz W, Lopez B, Costanzo V, Krejci L, Chabes A, Benkirane M, Lin YL, Pasero P. [SAMHD1 acts at stalled replication forks to prevent interferon induction]. C R Biol 2020; 343:9-21. [PMID: 32720483 DOI: 10.5802/crbiol.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 04/20/2020] [Indexed: 11/24/2022]
Abstract
DNA replication is an extremely complex process, involving thousands of replication forks progressing along chromosomes. These forks are frequently slowed down or stopped by various obstacles, such as secondary DNA structures, chromatin-acting proteins or a lack of nucleotides. This slowing down, known as replicative stress, plays a central role in tumour development. Complex processes, which are not yet fully understood, are set up to respond to this stress. Certain nucleases, such as MRE11 and DNA2, degrade the neo-replicated DNA at the level of blocked forks, allowing the replication to restart. The interferon pathway is a defense mechanism against pathogens that detects the presence of foreign nucleic acids in the cytoplasm and activates the innate immune response. DNA fragments resulting from genomic DNA metabolism (repair, retrotransposition) can diffuse into the cytoplasm and activate this pathway. A pathological manifestation of this process is the Aicardi-Goutières syndrome, a rare disease characterized by chronic inflammation leading to neurodegenerative and developmental problems. In this encephalopathy, it has been suggested that DNA replication may generate cytosolic DNA fragments, but the mechanisms involved have not been characterized. SAMHD1 is frequently mutated in the Aicardi-Goutières syndrome as well as in some cancers, but its role in the etiology of these diseases was largely unknown. We show that cytosolic DNA accumulates in SAMHD1-deficient cells, particularly in the presence of replicative stress, activating the interferon response. SAMHD1 is important for DNA replication under normal conditions and for the processing of stopped forks, independent of its dNTPase activity. In addition, SAMHD1 stimulates the exonuclease activity of MRE11 in vitro. When SAMHD1 is absent, degradation of neosynthesized DNA is inhibited, which prevents activation of the replication checkpoint and leads to failure to restart the replication forks. Resection of the replication forks is performed by an alternative mechanism which releases DNA fragments into the cytosol, activating the interferon response. The results obtained show, for the first time, a direct link between the response to replication stress and the production of interferons. These results have important implications for our understanding of the Aicardi-Goutières syndrome and cancers related to SAMHD1. For example, we have shown that MRE11 and RECQ1 are responsible for the production of DNA fragments that trigger the inflammatory response in cells deficient for SAMHD1. We can therefore imagine that blocking the activity of these enzymes could decrease the production of DNA fragments and, ultimately, the activation of innate immunity in these cells. In addition, the interferon pathway plays an essential role in the therapeutic efficacy of irradiation and certain chemotherapeutic agents such as oxaliplatin. Modulating this response could therefore be of much wider interest in anti-tumour therapy.
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Affiliation(s)
- F Coquel
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire Maintien de l'Intégrité du Génome au cours de la Réplication, Ligue Contre le Cancer, Montpellier, France
| | - M J Silva
- Peter MacCallum Cancer Centre, East Melbourne, Victoria, Australia
| | - H Técher
- IFOM, The FIRC Institute of Molecular Oncology, Milan, Italy
| | - K Zadorozhny
- Department of Biology and National Centre for Biomolecular Research, Masaryk University, Brno, Czech Republic
| | - S Sharma
- Department of Medical Biochemistry and Biophysics and Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
| | | | - C Mettling
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Domiciliation, Activation Immunitaire et Infection, Montpellier, France
| | - E Dardillac
- Université Paris Sud, CNRS, UMR 8200 and Institut de Cancérologie Gustave Roussy, Ligue Contre le Cancer, Villejuif, France
| | - A Barthe
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire Maintien de l'Intégrité du Génome au cours de la Réplication, Ligue Contre le Cancer, Montpellier, France
| | - A L Schmitz
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire Maintien de l'Intégrité du Génome au cours de la Réplication, Ligue Contre le Cancer, Montpellier, France
| | - A Promonet
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire Maintien de l'Intégrité du Génome au cours de la Réplication, Ligue Contre le Cancer, Montpellier, France
| | - A Cribier
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire de Virologie Moléculaire, Montpellier, France
| | - A Sarrazin
- BioCampus Montpellier, Université de Montpellier, CNRS, Montpellier, France
| | | | - B Lopez
- Université Paris Sud, CNRS, UMR 8200 and Institut de Cancérologie Gustave Roussy, Ligue Contre le Cancer, Villejuif, France
| | - V Costanzo
- IFOM, The FIRC Institute of Molecular Oncology, Milan, Italy
| | - L Krejci
- Department of Medical Biochemistry and Biophysics and Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden.,International Clinical Research Center, St Anne's University Hospital, Brno, Czech Republic
| | - A Chabes
- Department of Medical Biochemistry and Biophysics and Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
| | - M Benkirane
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire de Virologie Moléculaire, Montpellier, France
| | - Y L Lin
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire Maintien de l'Intégrité du Génome au cours de la Réplication, Ligue Contre le Cancer, Montpellier, France
| | - P Pasero
- Institut de Génétique Humaine, CNRS, Université de Montpellier, Laboratoire Maintien de l'Intégrité du Génome au cours de la Réplication, Ligue Contre le Cancer, Montpellier, France
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Lopez B, Fuego-Varela C, Galloway J, Gordon P. THU0335 IS CARDIOVASCULAR RISK IN INFLAMMATORY MYOPATHIES UNDERESTIMATED? Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4926] [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
Background:Inflammatory myopathies (IIM) comprise a heterogeneous group of rare connective tissue diseases (CTD) which can occur in any age group and in association with other autoimmune CTD. Extramuscular manifestations, including cardiac involvement, are common and may occur in the absence of muscle symptoms.The link between inflammation and atherosclerosis has been well established in other immune-mediated diseases suggesting that atherosclerosis in these conditions is driven by disease activity rather than traditional cardiovascular (CV) risk factors. Large observational studies have identified atherosclerotic cardiovascular events (CVE) as one of the leading causes in mortality in IIM but to date there are no specific recommendations for patients with IIM beyond the general guidelines for management of CV risk in the general population.A systematic review of the literature available was carried out, identifying six observational studies based on data collected from local or national healthcare databases. All six studies showed an increased incidence of MI and/or stroke compared to the general population, with a suggestion in some of them that this incidence was particularly high in the first few years after disease onset.Objectives:To establish if the incidence of atherosclerotic CVE in an IIM cohort is higher than expected when compared to QRISK2 predicted risk, and if so to determine if this risk is influenced by disease duration, gender, disease phenotype or ethnicity.Methods:Patients referred to the Myositis clinic at King’s College Hospital (KCH) were identified, excluding patients with Inclusion Body Myositis, overlap diagnoses with other CTD or prior atherosclerotic CVE. Only patients fulfilling ACR/EULAR criteria for IIM and under follow up at KCH (Denmark Hill site) were included in the study. Retrospective data was gathered by reviewing electronic patient records.Results:327 patients were identified through the Myositis Departmental database. After applying exclusion criteria the final dataset consisted of 159 patients (114 female, 71.7%), including dermatomyositis (82 patients), polymyositis (49 patients), Clinically Amyopathic Dermatomyositis (7 patients), anti-synthetase syndrome (12 patients) and necrotizing myopathy (9 patients). 81 patients were white (50.9%). Mean age of entry in the study was 49.1 years (SD 15.2) for women and 49.7 years (SD 12.2) for men. The mean follow up time was 2.61 years with a median time of 2.78 years (IQR 1.64-2.85). The mean disease duration was 6.77 years for the whole cohort with a median time of 4.61 years (IQR 2.43-9.07).The incidence rate of atherosclerotic CVE was 16.3/1000 patient-years (95% CI: 8.8-30.3), twice as high as expected by QRISK2. Analysis showed statistical difference with males (RR=6.49, p=0.002) and white patients (RR=5.04, p=0.02) although the statistical significance for white ethnicity was lost after adjusting for age and gender. Statistical analysis showed association between disease duration and higher incidence of atherosclerotic CVE, with a rate reduction of 0.7 per year from disease onset (p=0.01) after adjusting for age and gender.Fig. 1.Atherosclerotic risk by disease durationFig. 2.Kaplan-Meier survival plot to atherosclerotic eventConclusion:Our results suggest that atherosclerotic cardiovascular risk in inflammatory myopathies is underestimated, particularly early on the disease. Based on our results we would recommend a low threshold for primary prevention of atherosclerosis including the use of statins particularly for the first year after diagnosis.Disclosure of Interests:None declared
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Kappadath S, Lopez B, Mahvash A, Toskich B. Abstract No. 548 Adjustments to prescribed mean radiation dose based on actual tumor dose margins for segmental ablative 90-Y radioembolization. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.609] [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: 11/27/2022] Open
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15
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Rogeau S, Lopez B, Deleplancque A, Peggy P, Flipo R, Dutry J, Labalette M, Dubucquoi S. Rheumatoid arthritis antibody assays: Diagnostic performances and cut-off definitions. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.217] [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: 11/27/2022]
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Rogeau S, Lopez B, Deleplancque A, Yelnik C, Lambert M, Dutry J, Labalette M, Dubucquoi S. Antiphospholipid syndrome laboratory diagnosis using criterial antibodies – A performance study. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.211] [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: 10/26/2022]
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17
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Lopez B, Rogeau S, Deleplancque A, Moitrot E, Berthe E, Goulvestre C, Hillion S, Vinner E, Labalette M, Dubucquoi S. Preanalytical considerations, stability study and external quality assessment scheme implementation for complement components dosage on EDTA plasma. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.1113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Sanges S, Jeanpierre E, Lopez B, Russick J, Delignat S, Dubois R, Hachulla E, Paris C, Susen S, Launay D, Lacroix-Desmazes S, Terriou L. Association hémophilie acquise et maladie associée aux IgG4 : présentation d’un cas et étude physiopathologique. Rev Med Interne 2019. [DOI: 10.1016/j.revmed.2019.03.209] [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]
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19
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Pekar J, Lopez B, Schraen S, Onraed B. Serum free light chains: Prospective evaluation of a new ELISA assay. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.124] [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: 10/26/2022]
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20
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Lopez B, Bertier N, Ledoult E, Joudinaud R, Maanaoui M, Moitrot E, Deleplancque A, Rogeau S, Launay D, Lefèvre G, Labalette M, Dubucquoi S. Classical pathway activity, C3C, C4 and C1-inhibitor protein reference intervals using Optilite® reagents in EDTA plasma. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.1536] [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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21
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Dezoteux F, Gibier J, Lopez B, Bongiovanni A, Lefèvre G, Staumont-Sallé D. 008 Assessment of eosinophils degranulation in skin in drug reaction with eosinophilia and systemic symptoms (DRESS). J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.084] [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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22
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Kappadath S, Lopez B, Mahvash A. 03:18 PM Abstract No. 327 A novel lung dose calculation methodology for Y90-radioembolization using diagnostic chest-CT and Tc99m-MAA SPECT/CT. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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23
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Lopez B, Lopez B, Naqvi F, Majid T, Windemuth B. A Quality Improvement Project Using Fall Management Clinical Algorithms in a Long-Term Care Unit. J Am Med Dir Assoc 2019. [DOI: 10.1016/j.jamda.2019.01.065] [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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24
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Blanco B, Lopez B, Ferrandez M, Gomez N. Nutritional status (NS) and healthcare resource (HCR) use after implementation of a nutritional program (NP) for home-based (HB) neurological patients (PTS) with disabilities. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Eiros R, Treibel T, Scully P, Bhuva A, Patel K, Badiani S, Lopez B, Gonzalez A, Fontana M, Manistry C, Diez J, Moon JC. P6490Myocardial T2 in aortic stenosis: compensatory vasodilatation or subacute inflammation? Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6490] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R Eiros
- University Clinic of Navarra, Cardiology, Navarra, Spain
| | - T Treibel
- Barts Health NHS Trust, London, United Kingdom
| | - P Scully
- Barts Health NHS Trust, London, United Kingdom
| | - A Bhuva
- Barts Health NHS Trust, London, United Kingdom
| | - K Patel
- Barts Health NHS Trust, London, United Kingdom
| | - S Badiani
- Barts Health NHS Trust, London, United Kingdom
| | - B Lopez
- CIMA, Program of Cardiovascular Diseases, Pamplona, Spain
| | - A Gonzalez
- CIMA, Program of Cardiovascular Diseases, Pamplona, Spain
| | - M Fontana
- Barts Health NHS Trust, London, United Kingdom
| | - C Manistry
- Barts Health NHS Trust, London, United Kingdom
| | - J Diez
- CIMA, Program of Cardiovascular Diseases, Pamplona, Spain
| | - J C Moon
- Barts Health NHS Trust, London, United Kingdom
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26
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Charpentier M, Khedher AHY, Menoret S, Brion A, Lamribet K, Dardillac E, Boix C, Perrouault L, Tesson L, Geny S, De Cian A, Itier JM, Anegon I, Lopez B, Giovannangeli C, Concordet JP. CtIP fusion to Cas9 enhances transgene integration by homology-dependent repair. Nat Commun 2018; 9:1133. [PMID: 29556040 PMCID: PMC5859065 DOI: 10.1038/s41467-018-03475-7] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 02/16/2018] [Indexed: 12/18/2022] Open
Abstract
In genome editing with CRISPR-Cas9, transgene integration often remains challenging. Here, we present an approach for increasing the efficiency of transgene integration by homology-dependent repair (HDR). CtIP, a key protein in early steps of homologous recombination, is fused to Cas9 and stimulates transgene integration by HDR at the human AAVS1 safe harbor locus. A minimal N-terminal fragment of CtIP, designated HE for HDR enhancer, is sufficient to stimulate HDR and this depends on CDK phosphorylation sites and the multimerization domain essential for CtIP activity in homologous recombination. HDR stimulation by Cas9-HE, however, depends on the guide RNA used, a limitation that may be overcome by testing multiple guides to the locus of interest. The Cas9-HE fusion is simple to use and allows obtaining twofold or more efficient transgene integration than that with Cas9 in several experimental systems, including human cell lines, iPS cells, and rat zygotes.
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Affiliation(s)
- M Charpentier
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - A H Y Khedher
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
- Translational Sciences, Sanofi, 13 Quai Jules Guesde, F-94400, Vitry-sur-Seine, France
| | - S Menoret
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, CHU de Nantes, 30 Avenue Jean Monnet, F-44093, Nantes, France
| | - A Brion
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - K Lamribet
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - E Dardillac
- Equipe Labellisée Ligue Contre le Cancer, Institut de Cancérologie Gustave-Roussy, Université Paris-Saclay, CNRS UMR 8200, 114 rue Edouard Vaillant, Villejuif, F-94805, France
| | - C Boix
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - L Perrouault
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - L Tesson
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, CHU de Nantes, 30 Avenue Jean Monnet, F-44093, Nantes, France
| | - S Geny
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - A De Cian
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - J M Itier
- Translational Sciences, Sanofi, 13 Quai Jules Guesde, F-94400, Vitry-sur-Seine, France
| | - I Anegon
- Centre de Recherche en Transplantation et Immunologie UMR1064, INSERM, Université de Nantes, CHU de Nantes, 30 Avenue Jean Monnet, F-44093, Nantes, France
| | - B Lopez
- Equipe Labellisée Ligue Contre le Cancer, Institut de Cancérologie Gustave-Roussy, Université Paris-Saclay, CNRS UMR 8200, 114 rue Edouard Vaillant, Villejuif, F-94805, France
| | - C Giovannangeli
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France
| | - J P Concordet
- Museum National d'Histoire Naturelle, INSERM U1154, CNRS UMR 7196, Sorbonne Universités, 43 rue Cuvier, Paris, F-75231, France.
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Sahai A, Lopez B, Johnston CO, Panesi M. Adaptive coarse graining method for energy transfer and dissociation kinetics of polyatomic species. J Chem Phys 2017; 147:054107. [PMID: 28789554 DOI: 10.1063/1.4996654] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A novel reduced-order method is presented for modeling reacting flows characterized by strong non-equilibrium of the internal energy level distribution of chemical species in the gas. The approach seeks for a reduced-order representation of the distribution function by grouping individual energy states into macroscopic bins, and then reconstructing state population using the maximum entropy principle. This work introduces an adaptive grouping methodology to identify and lump together groups of states that are likely to equilibrate faster with respect to each other. To this aim, two algorithms have been considered: the modified island algorithm and the spectral clustering method. Both methods require a measure of dissimilarity between internal energy states. This is achieved by defining "metrics" based on the strength of the elementary rate coefficients included in the state-specific kinetic mechanism. Penalty terms are used to avoid grouping together states characterized by distinctively different energies. The two methods are used to investigate excitation and dissociation of N2 (Σg+1) molecules due to interaction with N(Su4) atoms in an ideal chemical reactor. The results are compared with a direct numerical simulation of the state-specific kinetics obtained by solving the master equations for the complete set of energy levels. It is found that adaptive grouping techniques outperform the more conventional uniform energy grouping algorithm by providing a more accurate description of the distribution function, mole fraction and energy profiles during non-equilibrium relaxation.
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Affiliation(s)
- A Sahai
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - B Lopez
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - C O Johnston
- NASA Langley Research Center, Hampton, Virginia 23666, USA
| | - M Panesi
- University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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Sanges S, Wallet F, Blondiaux N, Theis D, Vérin I, Vachée A, Dessein R, Faure K, Viget N, Senneville E, Leroy O, Maury F, Just N, Poissy J, Mathieu D, Prévotat A, Chenivesse C, Scherpereel A, Smith G, Lopez B, Rosain J, Frémeaux-Bacchi V, Hachulla E, Hatron PY, Bahuaud M, Batteux F, Launay D, Labalette M, Lefèvre G. Diagnosis of primary antibody and complement deficiencies in young adults after a first invasive bacterial infection. Clin Microbiol Infect 2017; 23:576.e1-576.e5. [DOI: 10.1016/j.cmi.2017.02.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/28/2017] [Accepted: 02/04/2017] [Indexed: 01/29/2023]
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Miralles L, Ardura A, Arias A, Borrell YJ, Clusa L, Dopico E, de Rojas AH, Lopez B, Muñoz-Colmenero M, Roca A, Valiente AG, Zaiko A, Garcia-Vazquez E. Barcodes of marine invertebrates from north Iberian ports: Native diversity and resistance to biological invasions. Mar Pollut Bull 2016; 112:183-188. [PMID: 27527375 DOI: 10.1016/j.marpolbul.2016.08.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 08/06/2016] [Accepted: 08/08/2016] [Indexed: 06/06/2023]
Abstract
Ports are gateways for many marine organisms transported by ships worldwide, especially non-indigenous species (NIS). In this study carried out in North Iberian ports (Cantabrian Sea, Bay of Biscay) we have observed 38% of exotic macroinvertebrates. Four species, namely the barnacle Austrominius modestus, the tubeworm Ficopomatus enigmaticus, the Pacific oyster Crassostrea gigas and the pygmy mussel Xenostrobus securis, exhibited clear signs of invasiveness. A total of 671 barcode (cytochrome oxidase subunit I or 18S rRNA) genes were obtained and confirmed the species status of some cryptic NIS. Negative and significant correlation between diversity estimators of native biota and proportion of NIS suggests biotic resistance in ports. This could be applied to management of port biota for contributing to prevent the settlement of biopollutants in these areas which are very sensitive to biological invasions.
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Affiliation(s)
- L Miralles
- Department of Functional Biology, University of Oviedo, 33071 Oviedo, Spain
| | - A Ardura
- Laboratoire d'Excellence "CORAIL", Université de Perpignan CBETM, 58 rue Paul Alduy, 66860 Perpignan Cedex, France
| | - A Arias
- Department of Biology of Organisms and Systems, University of Oviedo, 33071 Oviedo, Spain
| | - Y J Borrell
- Department of Functional Biology, University of Oviedo, 33071 Oviedo, Spain
| | - L Clusa
- Department of Functional Biology, University of Oviedo, 33071 Oviedo, Spain
| | - E Dopico
- Department of Education Sciences, University of Oviedo, 33071 Oviedo, Spain
| | - A Hernandez de Rojas
- Oceanographic Institute of Spain, Avda. Príncipe de Asturias, 70 bis, 33212 Gijon, Spain
| | - B Lopez
- Department of Biology of Organisms and Systems, University of Oviedo, 33071 Oviedo, Spain
| | - M Muñoz-Colmenero
- Department of Functional Biology, University of Oviedo, 33071 Oviedo, Spain
| | - A Roca
- Department of Functional Biology, University of Oviedo, 33071 Oviedo, Spain
| | - A G Valiente
- Department of Functional Biology, University of Oviedo, 33071 Oviedo, Spain
| | - A Zaiko
- Coastal and Freshwater Group, Cawthron Institute, 98 Halifax Street East, 7010 Nelson, New Zealand
| | - E Garcia-Vazquez
- Department of Functional Biology, University of Oviedo, 33071 Oviedo, Spain.
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Basile JI, Kviatcovsky D, Romero MM, Balboa L, Monteserin J, Ritacco V, Lopez B, Sabio y García C, García A, Vescovo M, Montaner PG, Palmero D, Del Carmen Sasiain M, de la Barrera S. Mycobacterium tuberculosis multi-drug-resistant strain M induces IL-17 + IFNγ - CD4 + T cell expansion through an IL-23 and TGF-β-dependent mechanism in patients with MDR-TB tuberculosis. Clin Exp Immunol 2016; 187:160-173. [PMID: 27681197 DOI: 10.1111/cei.12873] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2016] [Indexed: 12/14/2022] Open
Abstract
We have reported previously that T cells from patients with multi-drug-resistant tuberculosis (MDR-TB) express high levels of interleukin (IL)-17 in response to the MDR strain M (Haarlem family) of Mycobacterium tuberculosis (M. tuberculosis). Herein, we explore the pathways involved in the induction of Th17 cells in MDR-TB patients and healthy tuberculin reactors [purified protein derivative healthy donors (PPD+ HD)] by the M strain and the laboratory strain H37Rv. Our results show that IL-1β and IL-6 are crucial for the H37Rv and M-induced expansion of IL-17+ interferon (IFN)-γ- and IL-17+ IFN-γ+ in CD4+ T cells from MDR-TB and PPD+ HD. IL-23 plays an ambiguous role in T helper type 1 (Th1) and Th17 profiles: alone, IL-23 is responsible for M. tuberculosis-induced IL-17 and IFN-γ expression in CD4+ T cells from PPD+ HD whereas, together with transforming growth factor (TGF-β), it promotes IL-17+ IFN-γ- expansion in MDR-TB. In fact, spontaneous and M. tuberculosis-induced TGF-β secretion is increased in cells from MDR-TB, the M strain being the highest inducer. Interestingly, Toll-like receptor (TLR)-2 signalling mediates the expansion of IL-17+ IFN-γ- cells and the enhancement of latency-associated protein (LAP) expression in CD14+ and CD4+ T cells from MDR-TB, which suggests that the M strain promotes IL-17+ IFN-γ- T cells through a strong TLR-2-dependent TGF-β production by antigen-presenting cells and CD4+ T cells. Finally, CD4+ T cells from MDR-TB patients infected with MDR Haarlem strains show higher IL-17+ IFN-γ- and lower IL-17+ IFN-γ+ levels than LAM-infected patients. The present findings deepen our understanding of the role of IL-17 in MDR-TB and highlight the influence of the genetic background of the infecting M. tuberculosis strain on the ex-vivo Th17 response.
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Affiliation(s)
- J I Basile
- Instituto de Medicina Experimental-CONICET-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - D Kviatcovsky
- Instituto de Medicina Experimental-CONICET-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - M M Romero
- Instituto de Medicina Experimental-CONICET-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - L Balboa
- Instituto de Medicina Experimental-CONICET-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - J Monteserin
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Carlos G. Malbrán, Buenos Aires, Argentina
| | - V Ritacco
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Carlos G. Malbrán, Buenos Aires, Argentina
| | - B Lopez
- Instituto Nacional de Enfermedades Infecciosas, ANLIS Carlos G. Malbrán, Buenos Aires, Argentina
| | - C Sabio y García
- Instituto de Medicina Experimental-CONICET-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - A García
- Instituto de Tisioneumonología, Hospital Muñiz, Buenos Aires, Argentina
| | - M Vescovo
- Instituto de Tisioneumonología, Hospital Muñiz, Buenos Aires, Argentina
| | - P G Montaner
- Instituto de Tisioneumonología, Hospital Muñiz, Buenos Aires, Argentina
| | - D Palmero
- Instituto de Tisioneumonología, Hospital Muñiz, Buenos Aires, Argentina
| | - M Del Carmen Sasiain
- Instituto de Medicina Experimental-CONICET-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - S de la Barrera
- Instituto de Medicina Experimental-CONICET-Academia Nacional de Medicina, Buenos Aires, Argentina
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31
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Monteserin J, Paul R, Lopez B, Cnockaert M, Tortoli E, Menéndez C, García MJ, Palomino JC, Vandamme P, Ritacco V, Martin A. Combined approach to the identification of clinically infrequent non-tuberculous mycobacteria in Argentina. Int J Tuberc Lung Dis 2016; 20:1257-62. [DOI: 10.5588/ijtld.16.0122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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32
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Andre E, Yaniz-Galende E, Hamilton C, Dusting GJ, Hellen N, Poulet CE, Diez Cunado M, Smits AM, Lowe V, Eckardt D, Du Pre B, Sanz Ruiz R, Moerkamp AT, Tribulova N, Smani T, Liskova YV, Greco S, Guzzolino E, Franco D, Lozano-Velasco E, Knorr M, Pavoine C, Bukowska A, Van Linthout S, Miteva K, Sulzgruber P, Latet SC, Portnychenko A, Cannavo A, Kamilova U, Sagach VF, Santin Y, Octavia Y, Haller PM, Octavia Y, Rubies C, Dei Zotti F, Wong KHK, Gonzalez Miqueo A, Kruithof BPT, Kadur Nagaraju C, Shaposhnikova Y, Songia P, Lindner D, Wilson C, Benzoni P, Fabbri A, Campostrini G, Jorge E, Casini S, Mengarelli I, Nikolov A, Bublikov DS, Kheloufi M, Rubies C, Walker RE, Van Dijk RA, Posthuma JJ, Dumitriu IE, Karshovska E, Sakic A, Alexandru N, Martin-Lorenzo M, Molica F, Taylor RF, Mcarthur L, Crocini C, Matsuyama TA, Mazzoni L, Lin WK, Owen TJ, Scigliano M, Sheehan A, Bezerra Gurgel AR, Bromage DI, Kiss A, Ikeda G, Pickard JMJ, Wirth G, Casos K, Khudiakov A, Nistal JF, Ferrantini C, Park SJ, Di Maggio S, Gentile F, Dini L, Buyandelger B, Larrasa-Alonso J, Schirmer I, Chin SH, Cimiotti D, Martini H, Hohensinner PJ, Garabito M, Zeni F, Licholai S, De Bortoli M, Sivitskaya L, Viczenczova C, Rainer PP, Smith LE, Suna G, Gambardella J, Cozma A, De Gonzalo Calvo D, Scoditti E, Clark BJ, Mansfield C, Eckardt D, Gomez L, Llucia-Valldeperas A, De Pauw A, Porporato P, Bouzin C, Draoui N, Sonveaux P, Balligand JL, Mougenot N, Formicola L, Nadaud S, Dierick F, Hajjar RJ, Marazzi G, Sassoon D, Hulot JS, Zamora VR, Burton FL, Macquaide N, Smith GL, Hernandez D, Sivakumaran P, Millard R, Wong RCB, Pebay A, Shepherd RK, Lim SY, Owen T, Jabbour RJ, Kloc M, Kodagoda T, Denning C, Harding SE, Ramos S, Terracciano C, Gorelik J, Wei K, Bushway P, Ruiz-Lozano P, Mercola M, Moerkamp AT, Vegh AMD, Dronkers E, Lodder K, Van Herwaarden T, Goumans MJ, Pellet-Many C, Zachary I, Noack K, Bosio A, Feyen DAM, Demkes EJ, Dierickx PJ, Doevendans PA, Vos MA, Van Veen AAB, Van Laake LW, Fernandez Santos ME, Suarez Sancho S, Fuentes Arroyo L, Plasencia Martin V, Velasco Sevillano P, Casado Plasencia A, Climent AM, Guillem M, Atienza Fernandez F, Fernandez-Aviles F, Dingenouts CKE, Lodder K, Kruithof BPT, Van Herwaarden T, Vegh AMD, Goumans MJ, Smits AM, Knezl V, Szeiffova Bacova B, Egan Benova T, Viczenczova C, Goncalvesova E, Slezak J, Calderon-Sanchez E, Diaz I, Ordonez A, Salikova SP, Zaccagnini G, Voellenkle C, Sadeghi I, Maimone B, Castelvecchio S, Gaetano C, Menicanti L, Martelli F, Hatcher C, D'aurizio R, Groth M, Baugmart M, Mercatanti A, Russo F, Mariani L, Magliaro C, Pitto L, Lozano-Velasco E, Jodar-Garcia A, Galiano-Torres J, Lopez-Navarrete I, Aranega A, Wagensteen R, Quesada A, Aranega A, Franco D, Finger S, Karbach S, Kossmann S, Muenzel T, Wenzel P, Keck M, Mougenot N, Favier S, Fuand A, Atassi F, Barbier C, Lompre AM, Hulot JS, Nikonova Y, Pluteanu F, Kockskaemper J, Chilukoti RK, Wolke C, Lendeckel U, Gardemann A, Goette A, Miteva K, Pappritz K, Mueller I, El-Shafeey M, Ringe J, Tschoepe C, Pappritz K, El-Shafeey M, Ringe J, Tschoepe C, Van Linthout S, Koller L, Richter B, Blum S, Koprak M, Huelsmann M, Pacher R, Goliasch G, Wojta J, Niessner A, Van Herck PL, Claeys MJ, Haine SE, Lenders GD, Miljoen HP, Segers VF, Vandendriescche TR, Hoymans VY, Vrints CJ, Lapikova-Bryhinska T, Gurianova V, Portnichenko H, Vasylenko M, Zapara Y, Portnichenko V, Liccardo D, Lymperopoulos A, Santangelo M, Leosco D, Koch WJ, Ferrara N, Rengo G, Alieva T, Rasulova Z, Masharipova D, Dorofeyeva NA, Drachuk KO, Sicard P, Yucel Y, Dutaur M, Vindis C, Parini A, Mialet-Perez J, Van Deel ED, De Boer M, De Waard MC, Duncker DJ, Nagel F, Inci M, Santer D, Hallstroem S, Podesser BK, Kararigas G, De Boer M, Kietadisorn R, Swinnen M, Duimel H, Verheyen F, Chrifi I, Brandt MM, Cheng C, Janssens S, Moens AL, Duncker DJ, Batlle M, Dantas AP, Sanz M, Sitges M, Mont L, Guasch E, Lobysheva I, Beauloye C, Balligand JL, Vanhoutte PM, Tang EHC, Beaumont J, Lopez B, Ravassa S, Hermida N, Valencia F, Gomez-Doblas JJ, San Jose G, De Teresa E, Diez J, Van De Merbel AF, Kruithof-De Julio M, Goumans MJ, Claus P, Dries E, Angelo Singh A, Vermeulen K, Roderick HL, Sipido KR, Driesen RB, Ilchenko I, Bobronnikova L, Myasoedova V, Alamanni F, Tremoli E, Poggio P, Becher PM, Gotzhein F, Klingel K, Blankenberg S, Westermann D, Zi M, Cartwright E, Campostrini G, Bonzanni M, Milanesi R, Bucchi A, Baruscotti M, Difrancesco D, Barbuti A, Fantini M, Wilders R, Severi S, Benzoni P, Dell' Era P, Serzanti M, Olesen MS, Muneretto C, Bisleri G, Difrancesco D, Baruscotti M, Bucchi A, Barbuti A, Amoros-Figueras G, Raga S, Campos B, Alonso-Martin C, Rodriguez-Font E, Vinolas X, Cinca J, Guerra JM, Mengarelli I, Schumacher CA, Veldkamp MW, Verkerk AO, Remme CA, Veerman C, Guan K, Stauske M, Tan H, Barc J, Wilde A, Verkerk A, Bezzina C, Tsinlikov I, Tsinlikova I, Nicoloff G, Blazhev A, Garev A, Andrienko AV, Lychev VG, Vorobova EN, Anchugina DA, Vion AC, Hammoutene A, Poisson J, Dupont N, Souyri M, Tedgui A, Codogno P, Boulanger CM, Rautou PE, Dantas AP, Batlle M, Guasch E, Torres M, Montserrat JM, Almendros I, Mont L, Austin CA, Holt CM, Rijs K, Wezel A, Hamming JF, Kolodgie FD, Virmani R, Schaapherder AF, Lindeman JHN, Posma JJN, Van Oerle R, Spronk HMH, Ten Cate H, Dinkla S, Kaski JC, Schober A, Chaabane C, Ambartsumian N, Grigorian M, Bochaton-Piallat ML, Dragan E, Andrei E, Niculescu L, Georgescu A, Gonzalez-Calero L, Maroto AS, Martinez PJ, Heredero A, Aldamiz-Echevarria G, Vivanco F, Alvarez-Llamas G, Meens MJ, Pelli G, Foglia B, Scemes E, Kwak BR, Caldwell JL, Eisner DA, Dibb KM, Trafford AW, Chilton L, Smith GL, Nicklin SA, Coppini R, Ferrantini C, Yan P, Loew LM, Poggesi C, Cerbai E, Pavone FS, Sacconi L, Tanaka H, Ishibashi-Ueda H, Takamatsu T, Coppini R, Ferrantini C, Gentile F, Pioner JM, Santini L, Sartiani L, Bargelli V, Poggesi C, Mugelli A, Cerbai E, Maciejewska M, Bolton EL, Wang Y, O'brien F, Ruas M, Lei M, Sitsapesan R, Galione A, Terrar DA, Smith JG, Garcia D, Barriales-Villa R, Monserrat L, Harding SE, Denning C, Marston SB, Watson S, Tkach S, Faggian G, Terracciano CM, Perbellini F, Eiros Zamora J, Papadaki M, Messer A, Marston S, Gould I, Johnston A, Dunne M, Smith G, Kemi OJ, Pillai M, Davidson SM, Yellon DM, Tratsiakovich Y, Jang J, Gonon AT, Pernow J, Matoba T, Koga J, Egashira K, Burke N, Davidson SM, Yellon DM, Korpisalo P, Hakkarainen H, Laidinen S, Yla-Herttuala S, Ferrer-Curriu G, Perez M, Permanyer E, Blasco-Lucas A, Gracia JM, Castro MA, Barquinero J, Galinanes M, Kostina D, Kostareva A, Malashicheva A, Merino D, Ruiz L, Gomez J, Juarez C, Gil A, Garcia R, Hurle MA, Coppini R, Pioner JM, Gentile F, Mazzoni L, Rossi A, Tesi C, Belardinelli L, Olivotto I, Cerbai E, Mugelli A, Poggesi C, Eun-Ji EJ, Lim BK, Choi DJ, Milano G, Bertolotti M, De Marchis F, Zollo F, Sommariva E, Capogrossi MC, Pompilio G, Bianchi ME, Raucci A, Pioner JM, Coppini R, Scellini B, Tardiff J, Tesi C, Poggesi C, Ferrantini C, Mazzoni L, Sartiani L, Coppini R, Diolaiuti L, Ferrari P, Cerbai E, Mugelli A, Mansfield C, Luther P, Knoell R, Villalba M, Sanchez-Cabo F, Lopez-Olaneta MM, Ortiz-Sanchez P, Garcia-Pavia P, Lara-Pezzi E, Klauke B, Gerdes D, Schulz U, Gummert J, Milting H, Wake E, Kocsis-Fodor G, Brack KE, Ng GA, Kostareva A, Smolina N, Majchrzak M, Moehner D, Wies A, Milting H, Stehle R, Pfitzer G, Muegge A, Jaquet K, Maggiorani D, Lefevre L, Dutaur M, Mialet-Perez J, Parini A, Cussac D, Douin-Echinard V, Ebenbauer B, Kaun C, Prager M, Wojta J, Rega-Kaun G, Costa G, Onetti Y, Jimenez-Altayo F, Vila E, Dantas AP, Milano G, Bertolotti M, Scopece A, Piacentini L, Bianchi ME, Capogrossi MC, Pompilio G, Colombo G, Raucci A, Blaz M, Kapelak B, Sanak M, Bauce B, Calore C, Lorenzon A, Calore M, Poloni G, Mazzotti E, Rigato I, Daliento L, Basso C, Thiene G, Melacini P, Corrado D, Rampazzo A, Danilenko NG, Vaikhanskaya TG, Davydenko OG, Szeiffova Bacova B, Kura B, Egan Benova T, Yin CH, Kukreja R, Slezak J, Tribulova N, Lee DI, Sorge M, Glabe C, Paolocci N, Guarnieri C, Tomaselli GF, Kass DA, Van Eyk JE, Agnetti G, Cordwell SJ, White MY, Wojakowski W, Lynch M, Barallobre-Barreiro J, Yin X, Mayr U, White S, Jahingiri M, Hill J, Mayr M, Sorriento D, Ciccarelli M, Fiordelisi A, Campiglia P, Trimarco B, Iaccarino G, Sitar Taut AV, Schiau S, Orasan O, Halloumi W, Negrean V, Zdrenghea D, Pop D, Van Der Meer RW, Rijzewijk LJ, Smit JWA, Revuelta-Lopez E, Nasarre L, Escola-Gil JC, Lamb HJ, Llorente-Cortes V, Pellegrino M, Massaro M, Carluccio MA, Calabriso N, Wabitsch M, Storelli C, De Caterina R, Church SJ, Callagy S, Begley P, Kureishy N, Mcharg S, Bishop PN, Unwin RD, Cooper GJS, Mawad D, Perbellini F, Tonkin J, Bello SO, Simonotto JD, Lyon AR, Stevens MM, Terracciano CM, Harding SE, Kernbach M, Czichowski V, Bosio A, Fuentes L, Hernandez-Redondo I, Guillem MS, Fernandez ME, Sanz R, Atienza F, Climent AM, Fernandez-Aviles F, Soler-Botija C, Prat-Vidal C, Galvez-Monton C, Roura S, Perea-Gil I, Bragos R, Bayes-Genis A. Poster session 1Cell growth, differentiation and stem cells - Heart72Understanding the metabolism of cardiac progenitor cells: a first step towards controlling their proliferation and differentiation?73Expression of pw1/peg3 identifies a new cardiac adult stem cell population involved in post-myocardial infarction remodeling74Long-term stimulation of iPS-derived cardiomyocytes using optogenetic techniques to promote phenotypic changes in E-C coupling75Benefits of electrical stimulation on differentiation and maturation of cardiomyocytes from human induced pluripotent stem cells76Constitutive beta-adrenoceptor-mediated cAMP production controls spontaneous automaticity of human induced pluripotent stem cell-derived cardiomyocytes77Formation and stability of T-tubules in cardiomyocytes78Identification of miRNAs promoting human cardiomyocyte proliferation by regulating Hippo pathway79A direct comparison of foetal to adult epicardial cell activation reveals distinct differences relevant for the post-injury response80Role of neuropilins in zebrafish heart regeneration81Highly efficient immunomagnetic purification of cardiomyocytes derived from human pluripotent stem cells82Cardiac progenitor cells posses a molecular circadian clock and display large 24-hour oscillations in proliferation and stress tolerance83Influence of sirolimus and everolimus on bone marrow-derived mesenchymal stem cell biology84Endoglin is important for epicardial behaviour following cardiac injuryCell death and apoptosis - Heart87Ultrastructural alterations reflecting Ca2+ handling and cell-to-cell coupling disorders precede occurrence of severe arrhythmias in intact animal heart88Urocortin-1 promotes cardioprotection through ERK1/2 and EPAC pathways: role in apoptosis and necrosis89Expression p38 MAPK and Cas-3 in myocardium LV of rats with experimental heart failure at melatonin and enalapril introductionTranscriptional control and RNA species - Heart92Accumulation of beta-amyloid 1-40 in HF patients: the role of lncRNA BACE1-AS93Role of miR-182 in zebrafish and mouse models of Holt-Oram syndrome94Mir-27 distinctly regulates muscle-enriched transcription factors and growth factors in cardiac and skeletal muscle cells95AF risk factors impair PITX2 expression leading to Wnt-microRNA-ion channel remodelingCytokines and cellular inflammation - Heart98Post-infarct survival depends on the interplay of monocytes, neutrophils and interferon gamma in a mouse model of myocardial Infarction99Inflammatory cd11b/c cells play a protective role in compensated cardiac hypertrophy by promoting an orai3-related pro-survival signal100Anti-inflammatory effects of endothelin receptor blockade in the atrial tissue of spontaneously hypertensive rats101Mesenchymal stromal cells reduce NLRP3 inflammasome activity in Coxsackievirus B3-induced myocarditis102Mesenchymal stromal cells modulate monocytes trafficking in Coxsackievirus B3-induced myocarditis103The impact of regulatory T lymphocytes on long-term mortality in patients with chronic heart failure104Temporal dynamics of dendritic cells after ST-elevation myocardial infarction relate with improvement of myocardial functionGrowth factors and neurohormones - Heart107Preconditioning of hypertrophied heart: miR-1 and IGF-1 crosstalk108Modulation of catecholamine secretion from human adrenal chromaffin cells by manipulation of G protein-coupled receptor kinase-2 activity109Evaluation of cyclic adenosin-3,5- monophosphate and neurohormones in patients with chronic heart failureNitric oxide and reactive oxygen species - Heart112Hydrogen sulfide donor inhibits oxidative and nitrosative stress, cardiohemodynamics disturbances and restores cNOS coupling in old rats113Role and mechanisms of action of aldehydes produced by monoamine oxidase A in cardiomyocyte death and heart failure114Exercise training has contrasting effects in myocardial infarction and pressure-overload due to different endothelial nitric oxide synthase regulation115S-Nitroso Human Serum Albumin dose-dependently leads to vasodilation and alters reactive hyperaemia in coronary arteries of an isolated mouse heart model116Modulating endothelial nitric oxide synthase with folic acid attenuates doxorubicin-induced cardiomyopathy119Effects of long-term very high intensity exercise on aortic structure and function in an animal model120Electron paramagnetic resonance spectroscopy quantification of nitrosylated hemoglobin (HbNO) as an index of vascular nitric oxide bioavailability in vivo121Deletion of repressor activator protein 1 impairs acetylcholine-induced relaxation due to production of reactive oxygen speciesExtracellular matrix and fibrosis - Heart124MicroRNA-19b is associated with myocardial collagen cross-linking in patients with severe aortic stenosis. Potential usefulness as a circulating biomarker125A new ex vivo model to study cardiac fibrosis126Heterogeneity of fibrosis and fibroblast differentiation in the left ventricle after myocardial infarction127Effect of carbohydrate metabolism degree compensation to the level of galectin-3 changes in hypertensive patients with chronic heart failure and type 2 diabetes mellitus128Statin paradox in association with calcification of bicuspid aortic valve interstitial cells129Cardiac function remains impaired despite reversible cardiac fibrosis after healed experimental viral myocarditisIon channels, ion exchangers and cellular electrophysiology - Heart132Identifying a novel role for PMCA1 (Atp2b1) in heart rhythm instability133Mutations of the caveolin-3 gene as a predisposing factor for cardiac arrhythmias134The human sinoatrial node action potential: time for a computational model135iPSC-derived cardiomyocytes as a model to dissect ion current alterations of genetic atrial fibrillation136Postextrasystolic potentiation in healthy and diseased hearts: effects of the site of origin and coupling interval of the preceding extrasystole137Absence of Nav1.8-based (late) sodium current in rabbit cardiomyocytes and human iPSC-CMs138hiPSC-derived cardiomyocytes from Brugada Syndrome patients without identified mutations do not exhibit cellular electrophysiological abnormalitiesMicrocirculation141Atherogenic indices, collagen type IV turnover and the development of microvascular complications- study in diabetics with arterial hypertension142Changes in the microvasculature and blood viscosity in women with rheumatoid arthritis, hypercholesterolemia and hypertensionAtherosclerosis145Shear stress regulates endothelial autophagy: consequences on endothelial senescence and atherogenesis146Obstructive sleep apnea causes aortic remodeling in a chronic murine model147Aortic perivascular adipose tissue displays an aged phenotype in early and late atherosclerosis in ApoE-/- mice148A systematic evaluation of the cellular innate immune response during the process of human atherosclerosis149Inhibition of Coagulation factor Xa increases plaque stability and attenuates the onset and progression of atherosclerotic plaque in apolipoprotein e-deficient mice150Regulatory CD4+ T cells from patients with atherosclerosis display pro-inflammatory skewing and enhanced suppression function151Hypoxia-inducible factor (HIF)-1alpha regulates macrophage energy metabolism by mediating miRNAs152Extracellular S100A4 is a key player of smooth muscle cell phenotypic transition: implications in atherosclerosis153Microparticles of healthy origins improve atherosclerosis-associated endothelial progenitor cell dysfunction via microRNA transfer154Arterial remodeling and metabolism impairment in early atherosclerosis155Role of pannexin1 in atherosclerotic plaque formationCalcium fluxes and excitation-contraction coupling158Amphiphysin II induces tubule formation in cardiac cells159Interleukin 1 beta regulation of connexin 43 in cardiac fibroblasts and the effects of adult cardiac myocyte:fibroblast co-culture on myocyte contraction160T-tubular electrical defects contribute to blunted beta-adrenergic response in heart failure161Beat-to-beat variability of intracellular Ca2+ dynamics of Purkinje cells in the infarct border zone of the mouse heart revealed by rapid-scanning confocal microscopy162The efficacy of late sodium current blockers in hypertrophic cardiomyopathy is dependent on genotype: a study on transgenic mouse models with different mutations163Synthesis of cADPR and NAADP by intracellular CD38 in heart: role in inotropic and arrhythmogenic effects of beta-adrenoceptor signalingContractile apparatus166Towards an engineered heart tissue model of HCM using hiPSC expressing the ACTC E99K mutation167Diastolic mechanical load delays structural and functional deterioration of ultrathin adult heart slices in culture168Structural investigation of the cardiac troponin complex by molecular dynamics169Exercise training restores myocardial and oxidative skeletal muscle function from myocardial infarction heart failure ratsOxygen sensing, ischaemia and reperfusion172A novel antibody specific to full-length stromal derived factor-1 alpha reveals that remote conditioning induces its cleavage by endothelial dipeptidyl peptidase 4173Attenuation of myocardial and vascular arginase activity by vagal nerve stimulation via a mechanism involving alpha-7 nicotinic receptor during cardiac ischemia and reperfusion174Novel nanoparticle-mediated medicine for myocardial ischemia-reperfusion injury simultaneously targeting mitochondrial injury and myocardial inflammation175Acetylcholine plays a key role in myocardial ischaemic preconditioning via recruitment of intrinsic cardiac ganglia176The role of nitric oxide and VEGFR-2 signaling in post ischemic revascularization and muscle recovery in aged hypercholesterolemic mice177Efficacy of ischemic preconditioning to protect the human myocardium: the role of clinical conditions and treatmentsCardiomyopathies and fibrosis180Plakophilin-2 haploinsufficiency leads to impaired canonical Wnt signaling in ARVC patient181Improved technique for customized, easier, safer and more reliable transverse aortic arch banding and debanding in mice as a model of pressure overload hypertrophy182Late sodium current inhibitors for the treatment of inducible obstruction and diastolic dysfunction in hypertrophic cardiomyopathy: a study on human myocardium183Angiotensin II receptor antagonist fimasartan has protective role of left ventricular fibrosis and remodeling in the rat ischemic heart184Role of High-Mobility Group Box 1 (HMGB1) redox state on cardiac fibroblasts activities and heart function after myocardial infarction185Atrial remodeling in hypertrophic cardiomyopathy: insights from mouse models carrying different mutations in cTnT186Electrophysiological abnormalities in ventricular cardiomyocytes from a Maine Coon cat with hypertrophic cardiomyopathy: effects of ranolazine187ZBTB17 is a novel cardiomyopathy candidate gene and regulates autophagy in the heart188Inhibition of SRSF4 in cardiomyocytes induces left ventricular hypertrophy189Molecular characterization of a novel cardiomyopathy related desmin frame shift mutation190Autonomic characterisation of electro-mechanical remodeling in an in-vitro leporine model of heart failure191Modulation of Ca2+-regulatory function by three novel mutations in TNNI3 associated with severe infant restrictive cardiomyopathyAging194The aging impact on cardiac mesenchymal like stromal cells (S+P+)195Reversal of premature aging markers after bariatric surgery196Sex-associated differences in vascular remodeling during aging: role of renin-angiotensin system197Role of the receptor for advanced glycation end-products (RAGE) in age dependent left ventricle dysfunctionsGenetics and epigenetics200hsa-miR-21-5p as a key factor in aortic remodeling during aneurysm formation201Co-inheritance of mutations associated with arrhythmogenic and hypertrophic cardiomyopathy in two Italian families202Lamin a/c hot spot codon 190: form various amino acid substitutions to clinical effects203Treatment with aspirin and atorvastatin attenuate cardiac injury induced by rat chest irradiation: Implication of myocardial miR-1, miR-21, connexin-43 and PKCGenomics, proteomics, metabolomics, lipidomics and glycomics206Differential phosphorylation of desmin at serines 27 and 31 drives the accumulation of preamyloid oligomers in heart failure207Potential role of kinase Akt2 in the reduced recovery of type 2 diabetic hearts subjected to ischemia / reperfusion injury208A proteomics comparison of extracellular matrix remodelling in porcine coronary arteries upon stent implantationMetabolism, diabetes mellitus and obesity211Targeting grk2 as therapeutic strategy for cancer associated to diabetes212Effects of salbutamol on large arterial stiffness in patients with metabolic syndrome213Circulating microRNA-1 and microRNA-133a: potential biomarkers of myocardial steatosis in type 2 diabetes mellitus214Anti-inflammatory nutrigenomic effects of hydroxytyrosol in human adipocytes - protective mechanisms of mediterranean diets in obesity-related inflammation215Alterations in the metal content of different cardiac regions within a rat model of diabetic cardiomyopathyTissue engineering218A novel conductive patch for application in cardiac tissue engineering219Establishment of a simplified and improved workflow from neonatal heart dissociation to cardiomyocyte purification and characterization220Effects of flexible substrate on cardiomyocytes cell culture221Mechanical stretching on cardiac adipose progenitors upregulates sarcomere-related genes. Cardiovasc Res 2016. [DOI: 10.1093/cvr/cvw135] [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: 11/12/2022] Open
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Lopez B, Boucher A, Bahuaud M, Mortuaire G, Melliez H, Launay D, Terriou L, Stervinou-Wemeau L, Batteux F, Dubucquoi S, Labalette M, Lefèvre G. Déficit isolé en anticorps spécifiques antipolysaccharides, un déficit immunitaire humoral à ne pas méconnaître en cas d’infections graves à germes encapsulés : à propos de cinq observations. Rev Med Interne 2016. [DOI: 10.1016/j.revmed.2016.04.247] [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]
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Meier J, Lopez B, Mawlawi O. SU-F-J-224: Impact of 4D PET/CT On PERCIST Classification of Lung and Liver Metastases in NSLC and Colorectal Cancer. Med Phys 2016. [DOI: 10.1118/1.4956132] [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: 11/07/2022] Open
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Ruiz-Ortiz E, Gonzalez-Roca E, Mensa-Vilaro A, Rius J, Plaza S, Anton C, Calvo I, Modesto C, Anton J, Arnal C, Alvarez C, Alvarez-Coca J, Becerra E, Bilbao N, Camacho M, Crespo J, de Diego C, Diez-Garcia LF, Espinosa L, Garcia-Escriva D, de Gracia F, Gonzalez MI, Iglesias E, Izquierdo S, Lastra B, Llobet P, Lopez B, Lopez-Gonzalez V, Martinez R, Martin-Mateos MA, Merino R, Ortega L, Peiro ME, de Soto IP, Perez-Mendez C, Rodriguez-Valverde V, Ribes A, Ruiz A, Sanchez B, Santos JL, Sevilla B, Sotoca J, Vilas J, Villoria A, Yagüe J, Arostegui JI. Clinical and genetic features of Spanish patients with Mevalonate kinase deficiency. Pediatr Rheumatol Online J 2015. [PMCID: PMC4597073 DOI: 10.1186/1546-0096-13-s1-p36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Souto A, Alvarez N, Barros A, Fernandez L, Lopez B, Calvo I. PReS-FINAL-2008: Juvenile dermatomyositis: a report of 22 cases. Pediatr Rheumatol Online J 2013. [PMCID: PMC4044057 DOI: 10.1186/1546-0096-11-s2-p21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Calvo I, Lopez B, Marco A, Henriquez S, Rodriguez Y, Aviño J, Martinez R, Harto M. AB1157 Biological therapy in patients with chronic juvenile idiopathic arthritis-associated uveitis: Results of follow-up in a multidisciplinary unit:. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Barrantes-González M, Marín-Casino M, Lopez B, Ortonobes S, Salas E, Grau S. PHC-001 Amikacin Dosing to Treat Respiratory Tract Infections According to Patient’s Body Mass Index. Eur J Hosp Pharm 2013. [DOI: 10.1136/ejhpharm-2013-000276.346] [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] Open
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Henriques CC, Sousa M, Lopez B, Milheiro A, Riso N. Urinary tuberculosis associated to adalimumab. Case Reports 2012; 2012:bcr.11.2011.5247. [DOI: 10.1136/bcr.11.2011.5247] [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] Open
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Lemaître C, Fischer B, Kalousi A, Hoffbeck AS, Guirouilh-Barbat J, Shahar OD, Genet D, Goldberg M, Betrand P, Lopez B, Brino L, Soutoglou E. The nucleoporin 153, a novel factor in double-strand break repair and DNA damage response. Oncogene 2012; 31:4803-9. [PMID: 22249246 DOI: 10.1038/onc.2011.638] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
DNA repair is essential in maintaining genome integrity and defects in different steps of the process have been linked to cancer and aging. It is a long lasting question how DNA repair is spatially and temporarily organized in the highly compartmentalized nucleus and whether the diverse nuclear compartments regulate differently the efficiency of repair. Increasing evidence suggest the involvement of nuclear pore complexes in repair of double-strand breaks (DSBs) in yeast. Here, we show that the human nucleoporin 153 (NUP153) has a role in repair of DSBs and in the activation of DNA damage checkpoints. We explore the mechanism of action of NUP153 and we propose its potential as a novel therapeutic target in cancers.
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Affiliation(s)
- C Lemaître
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, UMR 7104 CNRS, CU de Strasbourg, France
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Lopez B, Arjona-Amo M, Luna-Oliva I, Perez BP, Torres-Lagares D, Gutierrez-Perez JL. Treatment of lingual frenulum with 980nm diode laser. Med Oral Patol Oral Cir Bucal 2012. [DOI: 10.4317/medoral.17643661] [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: 11/05/2022] Open
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Arfai N, Squires K, Ezeala Y, Carolfi L, Moon J, Lopez B, Brigham J. 68 Demographics and Risk Factors of Patients Who Decline Opt-In HIV Screenings in an Urban Emergency Department. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.094] [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: 10/17/2022]
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González A, Lopez B, Díez J. ASSOCIATION OF TIMP-2 WITH SYSTOLIC HEART FAILURE IN PATIENTS WITH HYPERTENSIVE HEART DISEASE. J Hypertens 2011. [DOI: 10.1097/00004872-201106001-00146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Plo I, Lopez B. AKT1 represses gene conversion induced by different genotoxic stresses and induces supernumerary centrosomes and aneuploidy in hamster ovary cells. Oncogene 2009; 28:2231-7. [PMID: 19398948 DOI: 10.1038/onc.2009.85] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The oncogenic kinase AKT1 is frequently overexpressed or activated in sporadic breast and ovarian cancers. In human breast tumors, we have previously shown that AKT1 represses homologous recombination (HR) induced by one double-strand break (DSB). To further analyze the impact of AKT1 on HR, we ectopically expressed wild-type or mutant forms of AKT1 in a hamster ovary cell line containing an intrachromosomal substrate for monitoring HR. In this cell line, AKT1 repressed HR induced by different genotoxic stresses including ionizing radiation, UV-C and one single DSB introduced into the intrachromosomal substrate. Consistently, AKT1 disrupted RAD51 foci formation, showing that AKT1 specifically affects gene conversion. Concomitantly, AKT1 represses both BRCA1 foci formation and HR stimulation resulting from BRCA1 overexpression, showing that AKT1 affects BRCA1-mediated HR functions, also in another species (hamster) and in another type of cell tissue (ovary cells). Finally, consistent with the HR defects, active AKT1 expression induces supernumerary centrosomes and aneuploidy. In addition to its impact on cell proliferation and apoptosis, the present data propose a novel oncogenic function for AKT1, by producing genomic instability as a consequence of HR repression.
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Affiliation(s)
- I Plo
- Institut de Radiobiologie Cellulaire et Moléculaire, UMR CEA-CNRS 217, Fontenay-aux-Roses Cedex, France
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Herbert K, Lopez B, Castellano J, Palacio A, Tamari L, Arcemen LM. The prevalence of erectile dysfunction in heart failure patients by race and ethnicity. Int J Impot Res 2009; 20:507-11. [PMID: 18701919 DOI: 10.1038/ijir.2008.35] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Erectile dysfunction (ED) is a common problem in male patients with heart failure (HF). However, no study was found that estimates the prevalence of ED by US ethnic groups with HF. We conducted an observational, cross-sectional study of patients enrolled in a HF disease management program in two sites Louisiana (N=329; 178 white, 99 black) and Florida (N=52; Hispanic). All male patients with an ejection fraction <or=40% were included. The Sexual Health Inventory for Men was used to estimate the prevalence of ED. Overall prevalence of ED was 89% and ED severity did not vary by race/ethnic group. Race/ethnic group differences were found for age, New York Heart Association functional classification, and blood pressure. Hispanic patients had the lowest unadjusted and adjusted prevalence rate of ED (81, 85%) compared to Black (90, 95%) and White (91, 92%) patients. There is a high prevalence of ED in Hispanic, Black and White ethnic groups with HF.
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Affiliation(s)
- K Herbert
- Division of Cardiology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
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Martinez O, Algaba A, Ballesteros D, Chana M, Estebanez B, Lopez B, Martin C, Vigil L, Blancas R. Safety and length of different sedations for endoscopic procedures. Crit Care 2009. [PMCID: PMC4084283 DOI: 10.1186/cc7561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bonacasa B, Sanchez ML, Rodriguez F, Lopez B, Quesada T, Fenoy FJ, Hernández I. 2-Methoxyestradiol attenuates hypertension and coronary vascular remodeling in spontaneously hypertensive rats. Maturitas 2008; 61:310-6. [PMID: 19010616 DOI: 10.1016/j.maturitas.2008.09.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Revised: 09/24/2008] [Accepted: 09/26/2008] [Indexed: 11/20/2022]
Abstract
OBJECTIVES Accumulating data provide evidence that some metabolites of 17beta-estradiol are biologically active and mediate multiple effects on the cardiovascular and renal systems. We investigated the effect of 2-methoxyestradiol (an active metabolite of estradiol with non-feminizing activity) on the development of hypertension and myocardial vascular remodeling in male and female ovarectomized SHR. METHODS Rats were divided into five groups: intact females, ovarectomized (OVX), OVX+ 2-methoxyestradiol (2ME), control males, and male+2ME. Systolic blood pressure was determined from 10 to 18 weeks. Structural changes in coronary vessels were quantified by an image analyzer. Immunoblotting of phosphorylated ERK1/2 and NADPH oxidase activity were performed on mesenteric arteries. RESULTS Treatment with 2ME reduced the increase in systolic blood pressure in male and ovarectomized rats to values not different from those obtained in intact females. Myocardial arterioles and small arteries showed significant increases in wall-to-lumen ratio and perivascular fibrosis in male and ovarectomized rats when compared with intact females. NADPH oxidase activity was increased in mesenteric arteries from males and ovarectomized females as compared with intact females. Finally, the expression of phosphorilated ERK1/2 were significantly higher in mesenteric arteries from male and ovariectomized animals than in those from intact females. Those effects of ovarectomy and gender differences were totally or partially prevented by treatment with 2-methoxyestradiol. CONCLUSIONS These data demonstrate that 2-methoxyestradiol protects the vasculature from hypertension-induced myocardial arterial remodeling in male and ovarectomized SHR, and that might be in part related to decreased superoxide generation and ERK1/2 activation.
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Affiliation(s)
- B Bonacasa
- Department of Physiology, Facultad de Medicina, Universidad de Murcia, Spain
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Acernese F, Alshourbagy M, Amico P, Antonucci F, Aoudia S, Astone P, Avino S, Ballardin G, Baggio L, Barone F, Barsotti L, Barsuglia M, Bauer TS, Bigotta S, Birindelli S, Bizouard MA, Boccara AC, Bondu F, Bosi L, Braccini S, Bradaschia C, Brillet A, Brisson V, Buskulic D, Cagnoli G, Calloni E, Campagna E, Carbognani F, Carbone L, Cavalier F, Cavalieri R, Cella G, Cesarini E, Chassande-Mottin E, Chatterji S, Cleva F, Coccia E, Corda C, Corsi A, Cottone F, Coulon JP, Cuoco E, D'Antonio S, Dari A, Dattilo V, Davier M, De Rosa R, Del Prete M, Di Fiore L, Di Lieto A, Di Paolo Emilio M, Di Virgilio A, Evans M, Fafone V, Ferrante I, Fidecaro F, Fiori I, Flaminio R, Fournier JD, Frasca S, Frasconi F, Gammaitoni L, Garufi F, Genin E, Gennai A, Giazotto A, Giordano L, Granata V, Greverie C, Grosjean D, Guidi G, Hamdani S, Hebri S, Heitmann H, Hello P, Huet D, La Penna P, Laval M, Leroy N, Letendre N, Lopez B, Lorenzini M, Loriette V, Losurdo G, Mackowski JM, Majorana E, Man N, Mantovani M, Marchesoni F, Marion F, Marque J, Martelli F, Masserot A, Menzinger F, Milano L, Minenkov Y, Moins C, Morgado N, Mosca S, Mours B, Neri I, Nocera F, Pagliaroli G, Palomba C, Paoletti F, Pardi S, Pasqualetti A, Passaquieti R, Passuello D, Persichetti G, Piergiovanni F, Pinard L, Poggiani R, Punturo M, Puppo P, Rabaste O, Rapagnani P, Regimbau T, Remillieux A, Ricci F, Ricciardi I, Rocchi A, Rolland L, Romano R, Ruggi P, Russo G, Sentenac D, Solimeno S, Swinkels BL, Tarallo M, Terenzi R, Toncelli A, Tonelli M, Tournefier E, Travasso F, Vajente G, van den Brand JFJ, van der Putten S, Verkindt D, Vetrano F, Viceré A, Vinet JY, Vocca H, Yvert M. In-vacuum optical isolation changes by heating in a Faraday isolator. Appl Opt 2008; 47:5853-5861. [PMID: 19122727 DOI: 10.1364/ao.47.005853] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We describe a model evaluating changes in the optical isolation of a Faraday isolator when passing from air to vacuum in terms of different thermal effects in the crystal. The changes are particularly significant in the crystal thermal lensing (refraction index and thermal expansion) and in its Verdet constant and can be ascribed to the less efficient convection cooling of the magneto-optic crystal of the Faraday isolator. An isolation decrease by a factor of 10 is experimentally observed in a Faraday isolator that is used in a gravitational wave experiment (Virgo) with a 10 W input laser when going from air to vacuum. A finite element model simulation reproduces with a great accuracy the experimental data measured on Virgo and on a test bench. A first set of measurements of the thermal lensing has been used to characterize the losses of the crystal, which depend on the sample. The isolation factor measured on Virgo confirms the simulation model and the absorption losses of 0.0016 +/- 0.0002/cm for the TGG magneto-optic crystal used in the Faraday isolator.
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