55 results on '"M Masip"'
Search Results
2. Production of unstable heavy neutrinos in proto-neutron stars
- Author
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C. Albertus, M. Masip, and M.A. Pérez-García
- Subjects
Physics ,QC1-999 - Abstract
We discuss the production of a class of heavy sterile neutrinos νh in proto-neutron stars. The neutrinos, of mass around 50 MeV, have a negligible mixing with the active species but relatively large dimension-5 electromagnetic couplings. In particular, a magnetic dipole moment μ≈10−6 GeV−1 implies that they are thermally produced through e+e−→ν¯hνh in the early phase of the core collapse, whereas a heavy–light transition moment μtr≈10−8 GeV−1 allows their decay νh→νiγ with a lifetime around 10−3 s. This type of electromagnetic couplings has been recently proposed to explain the excess of electron-like events in baseline experiments. We show that the production and decay of these heavy neutrinos would transport energy from the central regions of the star to distances d≈400 km, providing a very efficient mechanism to enhance the supernova shock front and heat the material behind it.
- Published
- 2015
- Full Text
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3. Quantum gravity phenomenology at the dawn of the multi-messenger era—A review
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A. Addazi, J. Alvarez-Muniz, R. Alves Batista, G. Amelino-Camelia, V. Antonelli, M. Arzano, M. Asorey, J.-L. Atteia, S. Bahamonde, F. Bajardi, A. Ballesteros, B. Baret, D.M. Barreiros, S. Basilakos, D. Benisty, O. Birnholtz, J.J. Blanco-Pillado, D. Blas, J. Bolmont, D. Boncioli, P. Bosso, G. Calcagni, S. Capozziello, J.M. Carmona, S. Cerci, M. Chernyakova, S. Clesse, J.A.B. Coelho, S.M. Colak, J.L. Cortes, S. Das, V. D’Esposito, M. Demirci, M.G. Di Luca, A. di Matteo, D. Dimitrijevic, G. Djordjevic, D. Dominis Prester, A. Eichhorn, J. Ellis, C. Escamilla-Rivera, G. Fabiano, S.A. Franchino-Viñas, A.M. Frassino, D. Frattulillo, S. Funk, A. Fuster, J. Gamboa, A. Gent, L.Á. Gergely, M. Giammarchi, K. Giesel, J.-F. Glicenstein, J. Gracia-Bondía, R. Gracia-Ruiz, G. Gubitosi, E.I. Guendelman, I. Gutierrez-Sagredo, L. Haegel, S. Heefer, A. Held, F.J. Herranz, T. Hinderer, J.I. Illana, A. Ioannisian, P. Jetzer, F.R. Joaquim, K.-H. Kampert, A. Karasu Uysal, T. Katori, N. Kazarian, D. Kerszberg, J. Kowalski-Glikman, S. Kuroyanagi, C. Lämmerzahl, J. Levi Said, S. Liberati, E. Lim, I.P. Lobo, M. López-Moya, G.G. Luciano, M. Manganaro, A. Marcianò, P. Martín-Moruno, Manel Martinez, Mario Martinez, H. Martínez-Huerta, P. Martínez-Miravé, M. Masip, D. Mattingly, N. Mavromatos, A. Mazumdar, F. Méndez, F. Mercati, S. Micanovic, J. Mielczarek, A.L. Miller, M. Milosevic, D. Minic, L. Miramonti, V.A. Mitsou, P. Moniz, S. Mukherjee, G. Nardini, S. Navas, M. Niechciol, A.B. Nielsen, N.A. Obers, F. Oikonomou, D. Oriti, C.F. Paganini, S. Palomares-Ruiz, R. Pasechnik, V. Pasic, C. Pérez de los Heros, C. Pfeifer, M. Pieroni, T. Piran, A. Platania, S. Rastgoo, J.J. Relancio, M.A. Reyes, A. Ricciardone, M. Risse, M.D. Rodriguez Frias, G. Rosati, D. Rubiera-Garcia, H. Sahlmann, M. Sakellariadou, F. Salamida, E.N. Saridakis, P. Satunin, M. Schiffer, F. Schüssler, G. Sigl, J. Sitarek, J. Solà Peracaula, C.F. Sopuerta, T.P. Sotiriou, M. Spurio, D. Staicova, N. Stergioulas, S. Stoica, J. Strišković, T. Stuttard, D. Sunar Cerci, Y. Tavakoli, C.A. Ternes, T. Terzić, T. Thiemann, P. Tinyakov, M.D.C. Torri, M. Tórtola, C. Trimarelli, T. Trześniewski, A. Tureanu, F.R. Urban, E.C. Vagenas, D. Vernieri, V. Vitagliano, J.-C. Wallet, J.D. Zornoza, Addazi, A., Alvarez-Muniz, J., Alves Batista, R., Amelino-Camelia, G., Antonelli, V., Arzano, M., Asorey, M., Atteia, J. -L., Bahamonde, S., Bajardi, F., Ballesteros, A., Baret, B., Barreiros, D. M., Basilakos, S., Benisty, D., Birnholtz, O., Blanco-Pillado, J. J., Blas, D., Bolmont, J., Boncioli, D., Bosso, P., Calcagni, G., Capozziello, S., Carmona, J. M., Cerci, S., Chernyakova, M., Clesse, S., Coelho, J. A. B., Colak, S. M., Cortes, J. L., Das, S., D'Esposito, V., Demirci, M., Di Luca, M. G., di Matteo, A., Dimitrijevic, D., Djordjevic, G., Prester, D. D., Eichhorn, A., Ellis, J., Escamilla-Rivera, C., Fabiano, G., Franchino-Vinas, S. A., Frassino, A. M., Frattulillo, D., Funk, S., Fuster, A., Gamboa, J., Gent, A., Gergely, L. A., Giammarchi, M., Giesel, K., Glicenstein, J. -F., Gracia-Bondia, J., Gracia-Ruiz, R., Gubitosi, G., Guendelman, E. I., Gutierrez-Sagredo, I., Haegel, L., Heefer, S., Held, A., Herranz, F. J., Hinderer, T., Illana, J. I., Ioannisian, A., Jetzer, P., Joaquim, F. R., Kampert, K. -H., Uysal, A. K., Katori, T., Kazarian, N., Kerszberg, D., Kowalski-Glikman, J., Kuroyanagi, S., Lammerzahl, C., Said, J. L., Liberati, S., Lim, E., Lobo, I. P., Lopez-Moya, M., Luciano, G. G., Manganaro, M., Marciano, A., Martin-Moruno, P., Martinez, M., Martinez-Huerta, H., Martinez-Mirave, P., Masip, M., Mattingly, D., Mavromatos, N., Mazumdar, A., Mendez, F., Mercati, F., Micanovic, S., Mielczarek, J., Miller, A. L., Milosevic, M., Minic, D., Miramonti, L., Mitsou, V. A., Moniz, P., Mukherjee, S., Nardini, G., Navas, S., Niechciol, M., Nielsen, A. B., Obers, N. A., Oikonomou, F., Oriti, D., Paganini, C. F., Palomares-Ruiz, S., Pasechnik, R., Pasic, V., Perez de los Heros, C., Pfeifer, C., Pieroni, M., Piran, T., Platania, A., Rastgoo, S., Relancio, J. J., Reyes, M. A., Ricciardone, A., Risse, M., Frias, M. D. R., Rosati, G., Rubiera-Garcia, D., Sahlmann, H., Sakellariadou, M., Salamida, F., Saridakis, E. N., Satunin, P., Schiffer, M., Schussler, F., Sigl, G., Sitarek, J., Peracaula, J. S., Sopuerta, C. F., Sotiriou, T. P., Spurio, M., Staicova, D., Stergioulas, N., Stoica, S., Striskovic, J., Stuttard, T., Cerci, D. S., Tavakoli, Y., Ternes, C. A., Terzic, T., Thiemann, T., Tinyakov, P., Torri, M. D. C., Tortola, M., Trimarelli, C., Trzesniewski, T., Tureanu, A., Urban, F. R., Vagenas, E. C., Vernieri, D., Vitagliano, V., Wallet, J. -C., Zornoza, J. D., AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), A. Addazi, J. Alvarez-Muniz, R. Alves Batista, G. Amelino-Camelia, V. Antonelli, M. Arzano, M. Asorey, J.-L. Atteia, S. Bahamonde, F. Bajardi, A. Ballestero, B. Baret, D.M. Barreiro, S. Basilako, D. Benisty, O. Birnholtz, J.J. Blanco-Pillado, D. Bla, J. Bolmont, D. Boncioli, P. Bosso, G. Calcagni, S. Capozziello, J.M. Carmona, S. Cerci, M. Chernyakov, S. Clesse, J.A.B. Coelho, S.M. Colak, J.L. Corte, S. Da, V. D???Esposito, M. Demirci, M.G. Di Luca, A. di Matteo, D. Dimitrijevic, G. Djordjevic, D. Dominis Prester, A. Eichhorn, J. Elli, C. Escamilla-Rivera, G. Fabiano, S.A. Franchino-Vi??a, A.M. Frassino, D. Frattulillo, S. Funk, A. Fuster, J. Gamboa, A. Gent, L.??. Gergely, M. Giammarchi, K. Giesel, J.-F. Glicenstein, J. Gracia-Bond??a, R. Gracia-Ruiz, G. Gubitosi, E.I. Guendelman, I. Gutierrez-Sagredo, L. Haegel, S. Heefer, A. Held, F.J. Herranz, T. Hinderer, J.I. Illana, A. Ioannisian, P. Jetzer, F.R. Joaquim, K.-H. Kampert, A. Karasu Uysal, T. Katori, N. Kazarian, D. Kerszberg, J. Kowalski-Glikman, S. Kuroyanagi, C. L??mmerzahl, J. Levi Said, S. Liberati, E. Lim, I.P. Lobo, M. L??pez-Moya, G.G. Luciano, M. Manganaro, A. Marcian??, P. Mart??n-Moruno, Manel Martinez, Mario Martinez, H. Mart??nez-Huerta, P. Mart??nez-Mirav??, M. Masip, D. Mattingly, N. Mavromato, A. Mazumdar, F. M??ndez, F. Mercati, S. Micanovic, J. Mielczarek, A.L. Miller, M. Milosevic, D. Minic, L. Miramonti, V.A. Mitsou, P. Moniz, S. Mukherjee, G. Nardini, S. Nava, M. Niechciol, A.B. Nielsen, N.A. Ober, F. Oikonomou, D. Oriti, C.F. Paganini, S. Palomares-Ruiz, R. Pasechnik, V. Pasic, C. P??rez de los Hero, C. Pfeifer, M. Pieroni, T. Piran, A. Platania, S. Rastgoo, J.J. Relancio, M.A. Reye, A. Ricciardone, M. Risse, M.D. Rodriguez Fria, G. Rosati, D. Rubiera-Garcia, H. Sahlmann, M. Sakellariadou, F. Salamida, E.N. Saridaki, P. Satunin, M. Schiffer, F. Sch??ssler, G. Sigl, J. Sitarek, J. Sol?? Peracaula, C.F. Sopuerta, T.P. Sotiriou, M. Spurio, D. Staicova, N. Stergioula, S. Stoica, J. Stri??kovi??, T. Stuttard, D. Sunar Cerci, Y. Tavakoli, C.A. Terne, T. Terzi??, T. Thiemann, P. Tinyakov, M.D.C. Torri, M. T??rtola, C. Trimarelli, T. Trze??niewski, A. Tureanu, F.R. Urban, E.C. Vagena, D. Vernieri, V. Vitagliano, J.-C. Wallet, J.D. Zornoza, Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Generalitat de Catalunya, European Commission, Xunta de Galicia, Ministerio de Economía y Competitividad (España), European Research Council, Eusko Jaurlaritza, Generalitat Valenciana, Japan Society for the Promotion of Science, and Comunidad de Madrid
- Subjects
High Energy Physics - Theory ,CAUSAL DYNAMICAL TRIANGULATIONS ,Ultra-high-energy cosmic rays ,[PHYS.MPHY]Physics [physics]/Mathematical Physics [math-ph] ,Lorentz invariance violation and deformation ,Gamma-ray astronomy ,Cosmic neutrinos ,Gravitational waves ,General Relativity and Quantum Cosmology ,Lorentz transformations ,Gravitational waves -- Detection ,High Energy Physics - Phenomenology (hep-ph) ,Astronomi, astrofysik och kosmologi ,Gamma ray astronomy ,Astronomy, Astrophysics and Cosmology ,Cosmic neutrino ,astro-ph.HE ,High Energy Astrophysical Phenomena (astro-ph.HE) ,General Relativity and Cosmology ,hep-th ,hep-ph ,Quantum cosmology ,ENERGY COSMIC-RAYS ,High Energy Physics - Phenomenology ,[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] ,Neutrinos -- Scattering ,Astrophysics - High Energy Astrophysical Phenomena ,Particle Physics - Theory ,Gravitational wave ,ACTIVE GALACTIC NUCLEI ,Astrophysics and Astronomy ,Nuclear and High Energy Physics ,[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] ,gr-qc ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,GAMMA-RAY BURST ,DOUBLY-SPECIAL RELATIVITY ,Ultra-high-energy cosmic ray ,Particle Physics - Phenomenology ,PRIMORDIAL BLACK-HOLES ,Matematikk og Naturvitenskap: 400::Fysikk: 430 [VDP] ,COHERENT STATES GCS ,Quantum gravity ,GENERALIZED UNCERTAINTY PRINCIPLE ,EXTRAGALACTIC BACKGROUND LIGHT ,High Energy Physics - Theory (hep-th) ,[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ,LORENTZ INVARIANCE VIOLATION - Abstract
The exploration of the universe has recently entered a new era thanks to the multimessenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic messengers (photons, neutrinos, cosmic rays and gravitational waves) from numerous origins. They give us information about their sources in the universe and the properties of the intergalactic medium. Moreover, multi-messenger astronomy opens up the possibility to search for phenomenological signatures of quantum gravity. On the one hand, the most energetic events allow us to test our physical theories at energy regimes which are not directly accessible in accelerators; on the other hand, tiny effects in the propagation of very high energy particles could be amplified by cosmological distances. After decades of merely theoretical investigations, the possibility of obtaining phenomenological indications of Planck-scale effects is a revolutionary step in the quest for a quantum theory of gravity, but it requires cooperation between different communities of physicists (both theoretical and experimental). This review, prepared within the COST Action CA18108 ‘‘Quantum gravity phenomenology in the multi-messenger approach", is aimed at promoting this cooperation by giving a state-of-the art account of the interdisciplinary expertise that is needed in the effective search of quantum gravity footprints in the production, propagation and detection of cosmic messengers., Talent Scientific Research Program of College of Physics, Sichuan University 1082204112427, Fostering Program in Disciplines Possessing Novel Features for Natural Science of Sichuan University 2020SCUNL209, 1000 Talent program of Sichuan province 2021, Xunta de Galicia, European Commission European Union ERDF, "Maria de Maeztu'' Units of Excellence program MDM-2016-0692, Red Tematica Nacional de Astroparticulas RED2018-102661-T, La Caixa Foundation 100010434, European Commission 847648 LCF/BQ/PI21/11830030 754510, Ministry of Education, Science & Technological Development, Serbia 451-03-9/2021-14/200124, FSR Incoming Postdoctoral Fellowship Ministry of Education, Science and Technological Development, Serbia 451-03-9/2021-14/200124, University of Rijeka grant uniri-prirod-18-48, Croatian Science Foundation (HRZZ) IP-2016-06-9782, Villum Fonden 29405 DGA-FSE 2020-E2117R, European Regional Development Fund through the Center of Excellence (TK133) "The Dark Side of the Universe'' European Regional Development Fund (ESIF/ERDF), Ministry of Education, Youth & Sports - Czech Republic CoGraDS-CZ.02.1.01/0.0/0.0/15 003/0000437, Blavatnik grant, Basque Government IT-97916 Basque Foundation for Science (IKERBASQUE), European Space Agency C4000120711 4000132310, FNRS (Belgian Fund for Research), Programa de Apoyo a Proyectos de Investigacion e Innovacion Tecnologica (PAPIIT), Universidad Nacional Autonoma de Mexico TA100122, National University of La Plata X909 DICYT 042131GR, National Research, Development & Innovation Office (NRDIO) - Hungary 123996, FQXi, Swiss National Science Foundation (SNSF), European Commission 181461 199307, Netherlands Organization for Scientific Research (NWO) 680-91-119 15MV71, Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research (KAKENHI) 20H01899 20H05853 JP21F21789, Estonian Research Council PRG356, Julian Schwinger Foundation, Generalitat Valenciana Excellence PROMETEO-II/2017/033 PROMETEO/2018/165, Istituto Nazionale di Fisica Nucleare (INFN), European ITN project HIDDeN H2020-MSCA-ITN-2019//860881-HIDDeN, Swedish Research Council, European Commission 2016-05996 European Research Council (ERC) European Commission 668679, Advanced ERC grant TReX, Ministry of Education, Universities and Research (MIUR) 2017X7X85K, Fonds de la Recherche Scientifique - FNRS 4.4501.18, Ministry of Research, Innovation and Digitization - Romania PN19-030102-INCDFM PN-III-P4ID-PCE-2020-2374, United States Department of Energy (DOE) DE-SC0020262, Ministry of Science, ICT & Future Planning, Republic of Korea 075-15-2020-778, German Academic Scholarship Foundation German Research Foundation (DFG) 408049454 420243324 425333893 445990517 Germany's Excellence Strategy (EXC 2121 "Quantum Universe'') 390833306 390837967 Federal Ministry of Education & Research (BMBF) 05 A20GU2 05 A20PX1, Centro de Excelencia "Severo Ochoa'' SEV-2016-0588, CERCA program of the Generalitat de Catalunya, Agencia de Gestio D'Ajuts Universitaris de Recerca Agaur (AGAUR) Generalitat de Catalunya 2017-SGR-1469 2017-SGR-929 ICCUB CEX2019-000918-M, National Science Centre, Poland 2019/33/B/ST2/00050 2017/27/B/ST2/01902, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) 306414/2020-1, Dicyt-USACH 041931MF, National Science Fund of Bulgaria KP-06-N 38/11 RCN ROMFORSK 302640, Comunidad de Madrid 2018-T1/TIC-10431 2019-T1/TIC-13177 S2018/NMT-4291, UK Research & Innovation (UKRI), Science & Technology Facilities Council (STFC) ST/T000759/1 ST/P000258/1 ST/T000732/1 ST/V005596/1, Portuguese Foundation for Science and Technology UIDB/00618/2020 UIDB/00777/2020 UIDP/00777/2020 CERN/FIS-PAR/0004/2019 PTDC/FIS-PAR/29436/2017 PTDC/FISPAR/31938/2017 PTDC/FIS-OUT/29048/2017 SFRH/BD/137127/2018, Centre National de la Recherche Scientifique (CNRS), LabEx UnivEarthS ANR-10-LABX-0023 ANR18-IDEX-0001, Junta de Andalucia European Commission A-FQM-053-UGR18, Natural Sciences and Engineering Research Council of Canada (NSERC) RGPIN-2021-03644, National Science Centre Poland Sonata Bis 2019/33/B/ST2/00050 DEC-2017/26/E/ST2/00763, Natural Sciences and Engineering Research Council of Canada (NSERC) DGIID-DGA 2015-E24/2, Spanish Research State Agency and Ministerio de Ciencia e Innovacion MCIN/AEI PID2019-104114RB-C32 PID2019-105544GB-I00 PID2019-105614GB-C21 PID2019106515GB-I00 PID2019-106802GB-I00 PID2019-107394GB-I00 PID2019-107844GB-C21 PID2019-107847RB-C41 MCIN/AEI PGC2018-095328-B-I00 PGC2018-094856-B-I00 PGC2018-096663-B-C41 PGC2018-096663-B-C44 PGC2018-094626-BC21 PGC2018-101858-B-I00 FPA2017-84543-P FPA2016-76005-C2-1-P, Spanish 'Ministerio de Universidades' BG20/00228 Spanish Government PID2020-115845GBI00 Generalitat de Catalunya Comunidad de Madrid S2018/NMT-4291 Spanish Government PID2019-105544GB-I00, Perimeter Institute for Theoretical Physics, Government of Canada through the Department of Innovation, Science and Economic Development, Province of Ontario through the Ministry of Colleges and Universities, Centre National de la Recherche Scientifique (CNRS), Netherlands Organization for Scientific Research (NWO), Fundamental Questions Institute (FQXi), European Cooperation in Science and Technology (COST) CA18108, Research Council of University of Guilan, Iniziativa Specifica TEONGRAV Iniziativa Specifica QGSKY Iniziativa Specifica QUAGRAP Iniziativa Specifica GeoSymQFT, the Spanish Research State Agency and Ministerio de Ciencia e Innovacion MCIN/AEI PID2020-115845GBI00 PID2019-108485GB-I00 PID2020-113334GB-I00 PID2020-113701GB-I00 PID2020-113775GB-I00 PID2020-118159GB-C41 PID2020-118159GA-C42 PRE2019-089024, Rothchild grant UID/MAT/00212/2020 FPU18/04571
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- 2022
4. 4CPS-255 Frequency of consumption of complementary and alternative medicine among HIV patients: a multicentre cross-sectional study
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E Gonzalez Colominas, M De Antonio Cuscó, M Masip Torne, M Martin, G Cardona, M Comas, MA Roch, B López, FI Torres, A Retamero, and P Luque
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- 2022
5. 4CPS-215 Persistence and therapeutic adherence to first-generation Janus kinase inhibitors in rheumatoid arthritis patients
- Author
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C Martinez-Molina, N Pages, P Riera, A Riera, H Codes, C Diaz-Torne, H Corominas, J Ruiz-Ramos, and M Masip
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- 2022
6. Gaia Early Data Release 3 Summary of the contents and survey properties
- Author
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Brown, A. G. A. Vallenari, A. Prusti, T. de Bruijne, J. H. J. Babusiaux, C. Biermann, M. Creevey, O. L. Evans, D. W. Eyer, L. Hutton, A. Jansen, F. Jordi, C. Klioner, S. A. Lammers, U. Lindegren, L. Luri, X. Mignard, F. and Panem, C. Pourbaix, D. Randich, S. Sartoretti, P. and Soubiran, C. Walton, N. A. Arenou, F. Bailer-Jones, C. A. L. and Bastian, U. Cropper, M. Drimmel, R. Katz, D. and Lattanzi, M. G. van Leeuwen, F. Bakker, J. Cacciari, C. and Castaneda, J. De Angeli, F. Ducourant, C. Fabricius, C. and Fouesneau, M. Fremat, Y. Guerra, R. Guerrier, A. and Guiraud, J. Jean-Antoine Piccolo, A. Masana, E. Messineo, R. and Mowlavi, N. Nicolas, C. Nienartowicz, K. Pailler, F. and Panuzzo, P. Riclet, F. Roux, W. Seabroke, G. M. Sordo, R. Tanga, P. Thevenin, F. Gracia-Abril, G. Portell, J. and Teyssier, D. Altmann, M. Andrae, R. Bellas-Velidis, I. and Benson, K. Berthier, J. Blomme, R. Brugaletta, E. and Burgess, P. W. Busso, G. Carry, B. Cellino, A. Cheek, N. and Clementini, G. Damerdji, Y. Davidson, M. Delchambre, L. and Dell'Oro, A. Fernandez-Hernandez, J. Galluccio, L. and Garcia-Lario, P. Garcia-Reinaldos, M. Gonzalez-Nunez, J. and Gosset, E. Haigron, R. Halbwachs, J. -L. Hambly, N. C. and Harrison, D. L. Hatzidimitriou, D. Heiter, U. Hernandez, J. and Hestroffer, D. Hodgkin, S. T. Holl, B. Janssen, K. and Jevardat de Fombelle, G. Jordan, S. Krone-Martins, A. and Lanzafame, A. C. Loeffler, W. Lorca, A. Manteiga, M. and Marchal, O. Marrese, P. M. Moitinho, A. Mora, A. and Muinonen, K. Osborne, P. Pancino, E. Pauwels, T. Petit, J. -M. Recio-Blanco, A. Richards, P. J. Riello, M. and Rimoldini, L. Robin, A. C. Roegiers, T. Rybizki, J. and Sarro, L. M. Siopis, C. Smith, M. Sozzetti, A. Ulla, A. and Utrilla, E. van Leeuwen, M. van Reeven, W. Abbas, U. and Abreu Aramburu, A. Accart, S. Aerts, C. Aguado, J. J. and Ajaj, M. Altavilla, G. Alvarez, M. A. Alvarez Cid-Fuentes, J. Alves, J. Anderson, R. I. Anglada Varela, E. Antoja, T. Audard, M. Baines, D. Baker, S. G. Balaguer-Nunez, L. and Balbinot, E. Balog, Z. Barache, C. Barbato, D. and Barros, M. Barstow, M. A. Bartolome, S. Bassilana, J. -L. and Bauchet, N. Baudesson-Stella, A. Becciani, U. and Bellazzini, M. Bernet, M. Bertone, S. Bianchi, L. and Blanco-Cuaresma, S. Boch, T. Bombrun, A. Bossini, D. and Bouquillon, S. Bragaglia, A. Bramante, L. Breedt, E. and Bressan, A. Brouillet, N. Bucciarelli, B. Burlacu, A. and Busonero, D. Butkevich, A. G. Buzzi, R. Caffau, E. and Cancelliere, R. Canovas, H. Cantat-Gaudin, T. Carballo, R. and Carlucci, T. Carnerero, I, M. Carrasco, J. M. and Casamiquela, L. Castellani, M. Castro-Ginard, A. Castro Sampol, P. Chaoul, L. Charlot, P. Chemin, L. Chiavassa, A. Cioni, M. -R. L. Comoretto, G. Cooper, W. J. Cornez, T. Cowell, S. Crifo, F. Crosta, M. Crowley, C. and Dafonte, C. Dapergolas, A. David, M. David, P. de Laverny, P. De Luise, F. De March, R. De Ridder, J. de Souza, R. de Teodoro, P. de Torres, A. del Peloso, E. F. and del Pozo, E. Delbo, M. Delgado, A. Delgado, H. E. and Delisle, J. -B. Di Matteo, P. Diakite, S. Diener, C. and Distefano, E. Dolding, C. Eappachen, D. Edvardsson, B. and Enke, H. Esquej, P. Fabre, C. Fabrizio, M. Faigler, S. and Fedorets, G. Fernique, P. Fienga, A. Figueras, F. and Fouron, C. Fragkoudi, F. Fraile, E. Franke, F. Gai, M. and Garabato, D. Garcia-Gutierrez, A. Garcia-Torres, M. and Garofalo, A. Gavras, P. Gerlach, E. Geyer, R. Giacobbe, P. Gilmore, G. Girona, S. Giuffrida, G. Gomel, R. and Gomez, A. Gonzalez-Santamaria, I. Gonzalez-Vidal, J. J. and Granvik, M. Gutierrez-Sanchez, R. Guy, L. P. Hauser, M. and Haywood, M. Helmi, A. Hidalgo, S. L. Hilger, T. and Hladczuk, N. Hobbs, D. Holland, G. Huckle, H. E. and Jasniewicz, G. Jonker, P. G. Juaristi Campillo, J. Julbe, F. and Karbevska, L. Kervella, P. Khanna, S. Kochoska, A. and Kontizas, M. Kordopatis, G. Korn, A. J. Kostrzewa-Rutkowska, Z. Kruszynska, K. Lambert, S. Lanza, A. F. Lasne, Y. and Le Campion, J. -F. Le Fustec, Y. Lebreton, Y. Lebzelter, T. and Leccia, S. Leclerc, N. Lecoeur-Taibi, I. Liao, S. and Licata, E. Lindstrom, E. P. Lister, T. A. Livanou, E. and Lobel, A. Madrero Pardo, P. Managau, S. Mann, R. G. and Marchant, J. M. Marconi, M. Marcos Santos, M. M. S. and Marinoni, S. Marocco, F. Marshall, D. J. Martin Polo, L. and Martin-Fleitas, J. M. Masip, A. Massari, D. and Mastrobuono-Battisti, A. Mazeh, T. McMillan, P. J. Messina, S. Michalik, D. Millar, N. R. Mints, A. Molina, D. and Molinaro, R. Molnar, L. Montegriffo, P. Mor, R. and Morbidelli, R. Morel, T. Morris, D. Mulone, A. F. Munoz, D. Muraveva, T. Murphy, C. P. Musella, I. Noval, L. and Ordenovic, C. Orru, G. Osinde, J. Pagani, C. Pagano, I. and Palaversa, L. Palicio, P. A. Panahi, A. Pawlak, M. and Penalosa Esteller, X. Penttila, A. Piersimoni, A. M. Pineau, F. -X. Plachy, E. Plum, G. Poggio, E. Poretti, E. and Poujoulet, E. Prsa, A. Pulone, L. Racero, E. Ragaini, S. and Rainer, M. Raiteri, C. M. Rambaux, N. Ramos, P. and Ramos-Lerate, M. Re Fiorentin, P. Regibo, S. Reyle, C. and Ripepi, V. Riva, A. Rixon, G. Robichon, N. Robin, C. and Roelens, M. Rohrbasser, L. Romero-Gomez, M. Rowell, N. and Royer, F. Rybicki, K. A. Sadowski, G. Sagrista Selles, A. and Sahlmann, J. Salgado, J. Salguero, E. Samaras, N. and Sanchez Gimenez, V. Sanna, N. Santovena, R. Sarasso, M. and Schultheis, M. Sciacca, E. Segol, M. Segovia, J. C. and Segransan, D. Semeux, D. Shahaf, S. Siddiqui, H. I. and Siebert, A. Siltala, L. Slezak, E. Smart, R. L. Solano, E. Solitro, F. Souami, D. Souchay, J. Spagna, A. and Spoto, F. Steele, I. A. Steidelmueller, H. Stephenson, C. A. and Suveges, M. Szabados, L. Szegedi-Elek, E. Taris, F. and Tauran, G. Taylor, M. B. Teixeira, R. Thuillot, W. and Tonello, N. Torra, F. Torra, J. Turon, C. Unger, N. and Vaillant, M. van Dillen, E. Vanel, O. Vecchiato, A. and Viala, Y. Vicente, D. Voutsinas, S. Weiler, M. Wevers, T. Wyrzykowski, L. Yoldas, A. Yvard, P. Zhao, H. and Zorec, J. Zucker, S. Zurbach, C. Zwitter, T. Gaia Collaboration
- Abstract
Context. We present the early installment of the third Gaia data release, Gaia EDR3, consisting of astrometry and photometry for 1.8 billion sources brighter than magnitude 21, complemented with the list of radial velocities from Gaia DR2. Aims. A summary of the contents of Gaia EDR3 is presented, accompanied by a discussion on the differences with respect to Gaia DR2 and an overview of the main limitations which are present in the survey. Recommendations are made on the responsible use of Gaia EDR3 results. Methods. The raw data collected with the Gaia instruments during the first 34 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium and turned into this early third data release, which represents a major advance with respect to Gaia DR2 in terms of astrometric and photometric precision, accuracy, and homogeneity. Results. Gaia EDR3 contains celestial positions and the apparent brightness in G for approximately 1.8 billion sources. For 1.5 billion of those sources, parallaxes, proper motions, and the (G(BP) - G(RP)) colour are also available. The passbands for G, G(BP), and G(RP) are provided as part of the release. For ease of use, the 7 million radial velocities from Gaia DR2 are included in this release, after the removal of a small number of spurious values. New radial velocities will appear as part of Gaia DR3. Finally, Gaia EDR3 represents an updated materialisation of the celestial reference frame (CRF) in the optical, the Gaia-CRF3, which is based solely on extragalactic sources. The creation of the source list for Gaia EDR3 includes enhancements that make it more robust with respect to high proper motion stars, and the disturbing effects of spurious and partially resolved sources. The source list is largely the same as that for Gaia DR2, but it does feature new sources and there are some notable changes. The source list will not change for Gaia DR3. Conclusions. Gaia EDR3 represents a significant advance over Gaia DR2, with parallax precisions increased by 30 per cent, proper motion precisions increased by a factor of 2, and the systematic errors in the astrometry suppressed by 30-40% for the parallaxes and by a factor similar to 2.5 for the proper motions. The photometry also features increased precision, but above all much better homogeneity across colour, magnitude, and celestial position. A single passband for G, G(BP), and G(RP) is valid over the entire magnitude and colour range, with no systematics above the 1% level
- Published
- 2021
7. Gaia Early Data Release 3: Summary of the contents and survey properties (vol 649, A1, 2021)
- Author
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Brown, A. G. A. Vallenari, A. Prusti, T. de Bruijne, J. H. J. Babusiaux, C. Biermann, M. Creevey, O. L. Evans, D. W. Eyer, L. Hutton, A. Jansen, F. Jordi, C. Klioner, S. A. Lammers, U. Lindegren, L. Luri, X. Mignard, F. and Panem, C. Pourbaix, D. Randich, S. Sartoretti, P. and Soubiran, C. Walton, N. A. Arenou, F. Bailer-Jones, C. A. L. and Bastian, U. Cropper, M. Drimmel, R. Katz, D. and Lattanzi, M. G. van Leeuwen, F. Bakker, J. Cacciari, C. and Castaneda, J. De Angeli, F. Ducourant, C. Fabricius, C. and Fouesneau, M. Fremat, Y. Guerra, R. Guerrier, A. and Guiraud, J. Piccolo, A. Jean-Antoine Masana, E. Messineo, R. and Mowlavi, N. Nicolas, C. Nienartowicz, K. Pailler, F. and Panuzzo, P. Riclet, F. Roux, W. Seabroke, G. M. Sordo, R. Tanga, P. Thevenin, F. Gracia-Abril, G. Portell, J. and Teyssier, D. Altmann, M. Andrae, R. Bellas-Velidis, I. and Benson, K. Berthier, J. Blomme, R. Brugaletta, E. and Burgess, P. W. Busso, G. Carry, B. Cellino, A. Cheek, N. and Clementini, G. Damerdji, Y. Davidson, M. Delchambre, L. and Dell'Oro, A. Fernandez-Hernandez, J. Galluccio, L. and Garcia-Lario, P. Garcia-Reinaldos, M. Gonzalez-Nunez, J. and Gosset, E. Haigron, R. Halbwachs, J. -L. Hambly, N. C. and Harrison, D. L. Hatzidimitriou, D. Heiter, U. Hernandez, J. and Hestroffer, D. Hodgkin, S. T. Holl, B. Janssen, K. and de Fombelle, G. Jevardat Jordan, S. Krone-Martins, A. and Lanzafame, A. C. Loffler, W. Lorca, A. Manteiga, M. and Marchal, O. Marrese, P. M. Moitinho, A. Mora, A. and Muinonen, K. Osborne, P. Pancino, E. Pauwels, T. Petit, J. -M. Recio-Blanco, A. Richards, P. J. Riello, M. and Rimoldini, L. Robin, A. C. Roegiers, T. Rybizki, J. and Sarro, L. M. Siopis, C. Smith, M. Sozzetti, A. Ulla, A. and Utrilla, E. van Leeuwen, M. van Reeven, W. Abbas, U. and Aramburu, A. Abreu Accart, S. Aerts, C. Aguado, J. J. and Ajaj, M. Altavilla, G. Alvarez, M. A. Cid-Fuentes, J. Alvarez Alves, J. Anderson, R. I. Varela, E. Anglada and Antoja, T. Audard, M. Baines, D. Baker, S. G. and Balaguer-Nunez, L. Balbinot, E. Balog, Z. Barache, C. and Barbato, D. Barros, M. Barstow, M. A. Bartolome, S. and Bassilana, J. -L. Bauchet, N. Baudesson-Stella, A. Becciani, U. Bellazzini, M. Bernet, M. Bertone, S. Bianchi, L. and Blanco-Cuaresma, S. Boch, T. Bombrun, A. Bossini, D. and Bouquillon, S. Bragaglia, A. Bramante, L. Breedt, E. and Bressan, A. Brouillet, N. Bucciarelli, B. Burlacu, A. and Busonero, D. Butkevich, A. G. Buzzi, R. Caffau, E. and Cancelliere, R. Canovas, H. Cantat-Gaudin, T. Carballo, R. and Carlucci, T. Carnerero, M. I. Carrasco, J. M. and Casamiquela, L. Castellani, M. Castro-Ginard, A. Sampol, P. Castro Chaoul, L. Charlot, P. Chemin, L. Chiavassa, A. and Cioni, M. -R. L. Comoretto, G. Cooper, W. J. Cornez, T. and Cowell, S. Crifo, F. Crosta, M. Crowley, C. Dafonte, C. Dapergolas, A. David, M. David, P. de Laverny, P. and De Luise, F. De March, R. De Ridder, J. de Souza, R. de Teodoro, P. de Torres, A. del Peloso, E. F. del Pozo, E. and Delbo, M. Delgado, A. Delgado, H. E. Delisle, J. -B. Di Matteo, P. Diakite, S. Diener, C. Distefano, E. Dolding, C. Eappachen, D. Edvardsson, B. Enke, H. Esquej, P. and Fabre, C. Fabrizio, M. Faigler, S. Fedorets, G. and Fernique, P. Fienga, A. Figueras, F. Fouron, C. and Fragkoudi, F. Fraile, E. Franke, F. Gai, M. Garabato, D. and Garcia-Gutierrez, A. Garcia-Torres, M. Garofalo, A. and Gavras, P. Gerlach, E. Geyer, R. Giacobbe, P. Gilmore, G. Girona, S. Giuffrida, G. Gomel, R. Gomez, A. and Gonzalez-Santamaria, I. Gonzalez-Vidal, J. J. Granvik, M. and Gutierrez-Sanchez, R. Guy, L. P. Hauser, M. Haywood, M. and Helmi, A. Hidalgo, S. L. Hilger, T. Hladczuk, N. Hobbs, D. Holland, G. Huckle, H. E. Jasniewicz, G. Jonker, P. G. Campillo, J. Juaristi Julbe, F. Karbevska, L. and Kervella, P. Khanna, S. Kochoska, A. Kontizas, M. and Kordopatis, G. Korn, A. J. Kostrzewa-Rutkowska, Z. and Kruszynska, K. Lambert, S. Lanza, A. F. Lasne, Y. Le Campion, J. -F. Le Fustec, Y. Lebreton, Y. Lebzelter, T. and Leccia, S. Leclerc, N. Lecoeur-Taibi, I. Liao, S. and Licata, E. Lindstrom, H. E. P. Lister, T. A. Livanou, E. and Lobel, A. Pardo, P. Madrero Managau, S. Mann, R. G. and Marchant, J. M. Marconi, M. Santos, M. M. S. Marcos and Marinoni, S. Marocco, F. Marshall, D. J. Polo, L. Martin and Martin-Fleitas, J. M. Masip, A. Massari, D. and Mastrobuono-Battisti, A. Mazeh, T. McMillan, P. J. Messina, S. Michalik, D. Millar, N. R. Mints, A. Molina, D. and Molinaro, R. Molnar, L. Montegriffo, P. Mor, R. and Morbidelli, R. Morel, T. Morris, D. Mulone, A. F. Munoz, D. Muraveva, T. Murphy, C. P. Musella, I. Noval, L. and Ordenovic, C. Orru, G. Osinde, J. Pagani, C. Pagano, I. and Palaversa, L. Palicio, P. A. Panahi, A. Pawlak, M. and Esteller, X. Penalosa Penttila, A. Piersimoni, A. M. Pineau, F. -X. Plachy, E. Plum, G. Poggio, E. Poretti, E. and Poujoulet, E. Prsa, A. Pulone, L. Racero, E. Ragaini, S. and Rainer, M. Raiteri, C. M. Rambaux, N. Ramos, P. and Ramos-Lerate, M. Fiorentin, P. Re Regibo, S. Reyle, C. and Ripepi, V. Riva, A. Rixon, G. Robichon, N. Robin, C. and Roelens, M. Rohrbasser, L. Romero-Gomez, M. Rowell, N. and Royer, F. Rybicki, K. A. Sadowski, G. Selles, A. Sagrista and Sahlmann, J. Salgado, J. Salguero, E. Samaras, N. and Gimenez, V. Sanchez Sanna, N. Santovena, R. Sarasso, M. and Schultheis, M. Sciacca, E. Segol, M. Segovia, J. C. and Segransan, D. Semeux, D. Shahaf, S. Siddiqui, H. I. and Siebert, A. Siltala, L. Slezak, E. Smart, R. L. Solano, E. Solitro, F. Souami, D. Souchay, J. Spagna, A. and Spoto, F. Steele, I. A. Steidelmuller, H. Stephenson, C. A. and Suveges, M. Szabados, L. Szegedi-Elek, E. Taris, F. and Tauran, G. Taylor, M. B. Teixeira, R. Thuillot, W. and Tonello, N. Torra, F. Torra, J. Turon, C. Unger, N. and Vaillant, M. van Dillen, E. Vanel, O. Vecchiato, A. and Viala, Y. Vicente, D. Voutsinas, S. Weiler, M. Wevers, T. Wyrzykowski, L. Yoldas, A. Yvard, P. Zhao, H. and Zorec, J. Zucker, S. Zurbach, C. Zwitter, T. Gaia Collaboration
- Published
- 2021
8. A pragmatic approach to the use of inotropes for the management of acute and advanced heart failure: An expert panel consensus
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Farmakis, D. Agostoni, P. Baholli, L. Bautin, A. Comin-Colet, J. Crespo-Leiro, M.G. Fedele, F. García-Pinilla, J.M. Giannakoulas, G. Grigioni, F. Gruchała, M. Gustafsson, F. Harjola, V.-P. Hasin, T. Herpain, A. Iliodromitis, E.K. Karason, K. Kivikko, M. Liaudet, L. Ljubas-Maček, J. Marini, M. Masip, J. Mebazaa, A. Nikolaou, M. Ostadal, P. Põder, P. Pollesello, P. Polyzogopoulou, E. Pölzl, G. Tschope, C. Varpula, M. von Lewinski, D. Vrtovec, B. Yilmaz, M.B. Zima, E. Parissis, J.
- Abstract
Inotropes aim at increasing cardiac output by enhancing cardiac contractility. They constitute the third pharmacological pillar in the treatment of patients with decompensated heart failure, the other two being diuretics and vasodilators. Three classes of parenterally administered inotropes are currently indicated for decompensated heart failure, (i) the beta adrenergic agonists, including dopamine and dobutamine and also the catecholamines epinephrine and norepinephrine, (ii) the phosphodiesterase III inhibitor milrinone and (iii) the calcium sensitizer levosimendan. These three families of drugs share some pharmacologic traits, but differ profoundly in many of their pleiotropic effects. Identifying the patients in need of inotropic support and selecting the proper inotrope in each case remain challenging. The present consensus, derived by a panel meeting of experts from 21 countries, aims at addressing this very issue in the setting of both acute and advanced heart failure. © 2019 The Authors
- Published
- 2019
9. Organ dysfunction, injury and failure in acute heart failure: from pathophysiology to diagnosis and management. A review on behalf of the Acute Heart Failure Committee of the Heart Failure Association (HFA) of the European Society of Cardiology (ESC)
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Harjola, V.-P. Mullens, W. Banaszewski, M. Bauersachs, J. Brunner-La Rocca, H.-P. Chioncel, O. Collins, S.P. Doehner, W. Filippatos, G.S. Flammer, A.J. Fuhrmann, V. Lainscak, M. Lassus, J. Legrand, M. Masip, J. Mueller, C. Papp, Z. Parissis, J. Platz, E. Rudiger, A. Ruschitzka, F. Schäfer, A. Seferovic, P.M. Skouri, H. Yilmaz, M.B. Mebazaa, A.
- Abstract
Organ injury and impairment are commonly observed in patients with acute heart failure (AHF), and congestion is an essential pathophysiological mechanism of impaired organ function. Congestion is the predominant clinical profile in most patients with AHF; a smaller proportion presents with peripheral hypoperfusion or cardiogenic shock. Hypoperfusion further deteriorates organ function. The injury and dysfunction of target organs (i.e. heart, lungs, kidneys, liver, intestine, brain) in the setting of AHF are associated with increased risk for mortality. Improvement in organ function after decongestive therapies has been associated with a lower risk for post-discharge mortality. Thus, the prevention and correction of organ dysfunction represent a therapeutic target of interest in AHF and should be evaluated in clinical trials. Treatment strategies that specifically prevent, reduce or reverse organ dysfunction remain to be identified and evaluated to determine if such interventions impact mortality, morbidity and patient-centred outcomes. This paper reflects current understanding among experts of the presentation and management of organ impairment in AHF and suggests priorities for future research to advance the field. © 2017 The Authors. European Journal of Heart Failure © 2017 European Society of Cardiology
- Published
- 2017
10. Treatment with Sofosbuvir + Simeprevir for 12 Weeks in HCV Compensated Cirrhosis (Genotypes 1 and 4); The Use of Ribavirin Does Not Influence Sustained Viral Response
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Adolfo Gallego, N. Margall, Cristina Gely, N. Pagès, M. Masip, Carlos Guarner, Edilmar Alvarado, and Xavier Torras
- Subjects
Simeprevir ,medicine.medical_specialty ,Cirrhosis ,Hepatology ,Sofosbuvir ,business.industry ,Ribavirin ,medicine.disease ,Gastroenterology ,chemistry.chemical_compound ,chemistry ,Internal medicine ,Genotype ,medicine ,Sustained viral response ,business ,medicine.drug - Published
- 2016
11. SEARCH FOR NEUTRINO DECAY AT SHALON
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M. Masip, V. G. Sinitsyna, S. I. Nikolsky, and V. Y. Sinitsyna
- Subjects
Physics ,Particle physics ,Neutrino - Published
- 2012
12. Reprogramming with defined factors: from induced pluripotency to induced transdifferentiation
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M. MASIP, A. VEIGA, J. BELMONTE, and C. SIMON
- Subjects
iPS cells ,transdifferentiation ,induced cell fate change ,reprogramming ,induced pluripotency - Abstract
Ever since work on pluripotency induction was originally published, reporting the reprogramming of somatic cells to induced pluripotent stem cells (iPS cells) by the ectopic expression of the four transcription factors Oct4, Sox2, Klf4 and c-Myc, high expectations regarding their potential use for regenerative medicine have emerged. Very recently, the direct conversion of fibroblasts into functional neurons with no prior pluripotent stage has been described. Interconversion between adult cells from ontogenically different lineages by an induced transdifferentiation process based on the overexpression of a cocktail of transcription factors, while avoiding transition through an embryonic stem cell-like state, provides a new impetus in the field of regenerative medicine. Here, we review the induced reprogramming of somatic cells with defined factors and analyze their potential clinical use. Beginning with induced pluripotency, we summarize the initial objections including their extremely low efficiency and the risk of tumor generation. We also review recent reports describing iPS cells' capacity to generate viable offspring through tetraploid complementation, the most restrictive pluripotency criterion. Finally, we explore the available evidence for 'induced transdifferentiated cells' as a novel tool for adult cell fate modification.
- Published
- 2010
13. Quasi-Degenerate Neutrinos and Lepton Flavour Violation in Supersymmetric Models
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M. Masip and J.I. Illana
- Subjects
Physics ,Quark ,Particle physics ,Physics and Astronomy (miscellaneous) ,Scalar (mathematics) ,High Energy Physics::Phenomenology ,Yukawa potential ,FOS: Physical sciences ,Supersymmetry ,Fermion ,High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,Sfermion ,High Energy Physics::Experiment ,Neutrino ,Engineering (miscellaneous) ,Lepton - Abstract
In supersymmetric (SUSY) models the misalignment between fermion and sfermion families introduces unsuppressed flavor-changing processes. Even if the mass parameters are chosen to give no flavor violation, family dependent radiative corrections make this adjustment not stable. We analyze the rate of l --> l' gamma in SUSY-GUT models with three quasi-degenerate neutrinos and universal scalar masses at the Planck scale. We pay special attention to a recently proposed scenario where the low-energy neutrino mixings are generated from identical quark and lepton mixings at large scales. We show that: (i) To take universal slepton masses at the GUT scale is a very poor approximation, even in no-scale models. (ii) For large neutrino Yukawa couplings the decay mu --> e gamma would be observed in the planned experiment at PSI. (iii) For large values of tanbeta the tau coupling gives important corrections, pushing mu --> e gamma and tau --> mu gamma to accessible rates. In particular, the non-observation of these processes in the near future would exclude the scenario with unification of quark and lepton mixing angles. (iv) The absence of lepton flavor violating decays in upcoming experiments would imply a low value of tanbeta, small neutrino couplings, and large (>~ 250$ GeV) SUSY-breaking masses., 13 pages, 4 figures. v3: introduction and discussion improved and references added; version to appear in EPJC
- Published
- 2003
- Full Text
- View/download PDF
14. Arginine 121 is a crucial residue for the specific cytotoxic activity of the ribotoxin alpha-sarcin
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M, Masip, J, Lacadena, J M, Mancheño, M, Oñaderra, A, Martínez-Ruiz, A, Martínez del Pozo, and J G, Gavilanes
- Subjects
Models, Molecular ,Cytotoxins ,Protein Conformation ,Apoptosis ,Mycotoxins ,Arginine ,Fungal Proteins ,Aspergillus ,Amino Acid Substitution ,Endoribonucleases ,Liposomes ,Mutagenesis, Site-Directed ,Tumor Cells, Cultured ,Humans ,Phospholipids - Abstract
Alpha-sarcin, a cyclizing ribonuclease secreted by the mould Aspergillus giganteus, is one of the best characterized members of a family of fungal ribotoxins. This protein induces apoptosis in tumour cells due to its highly specific activity on ribosomes. Fungal ribotoxins display a three-dimensional protein fold similar to those of a larger group of microbial noncytotoxic RNases, represented by RNases T1 and U2. This similarity involves the three catalytic residues and also the Arg121 residue, whose counterpart in RNase T1, Arg77, is located in the vicinity of the substrate phosphate moiety although its potential functional role is not known. In this work, Arg121 of alpha-sarcin has been replaced by Gln or Lys. These two mutations do not modify the conformation of the protein but abolish the ribosome-inactivating activity of alpha-sarcin. In addition, the loss of the positive charge at that position produces dramatic changes on the interaction of alpha-sarcin with phospholipid membranes. It is concluded that Arg121 is a crucial residue for the characteristic cytotoxicity of alpha-sarcin and presumably of the other fungal ribotoxins.
- Published
- 2001
15. 1/m_Q corrections in heavy meson decays
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M. Masip
- Subjects
Physics ,Quark ,High Energy Physics - Phenomenology ,Nuclear and High Energy Physics ,Particle physics ,Recoil ,High Energy Physics - Phenomenology (hep-ph) ,Meson ,Form factor (quantum field theory) ,Perturbative QCD ,FOS: Physical sciences ,First order ,Symmetry (physics) - Abstract
We study the form factor f_+^H (H=D,B) involved in H-\pi transitions. We use data on D^0 \to \pi^- l^+ \nu to find f_+^D at low recoil. Then we use perturbative QCD methods to calculate at larger recoil the contributions to f_+^H that break heavy quark symmetry (HQS). Using HQS relations we obtain an estimate of f_+^B which includes first order corrections in 1/(2m_Q). Comparison with recent data on B^0 \to \pi^- l^+ \nu gives V_ub = 0.0025 \pm 0.0005^ex \pm 0.0004^th., Comment: 13 pages, 3 figures, corrected version
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- 1997
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16. Leptophobic Z{prime} from superstring derived models
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M. Masip and A.E. Faraggi
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Physics ,Particle physics ,Gauge boson ,Gauge group ,High Energy Physics::Lattice ,Spontaneous symmetry breaking ,High Energy Physics::Phenomenology ,Superstring theory ,Grand Unified Theory ,Green–Schwarz mechanism ,Symmetry breaking ,Gauge symmetry - Abstract
It was recently suggested that the reported anomalies in R{sub b} and R{sub c} can be interpreted as the effect of a heavy vector boson that couples to quarks and is universally decoupled from leptons. We examine how an extra gauge boson with this property can arise from superstring derived models. In a specific three generation model we show that the U(1){sub B-L} symmetry combines with the horizontal flavor symmetries to form a universal leptophobic U(1) symmetry. In our model there is an enhancement of the color gauge group from twisted sectors. The enhancement occurs after the breaking of the unifying gauge symmetry by ``Wilson lines.`` The leptophobic U(1) symmetry then becomes a generator of the color SU(4) gauge group. We examine how similar symmetries may appear in other string models without the enhancement. We propose that if the current LEP anomalies persist it may be evidence for a certain class of un-unified superstring models. 15 refs., 4 tabs.
- Published
- 1996
17. [Self medication in general pediatrics]
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U, Rodríguez Benito, R, Magro Peteguer, M, Masip López, R, Vacas Garrido, and U ], Urbano Rodríguez B [corrected to Rodríguez Benito
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Adult ,Male ,Parents ,Age Factors ,Infant ,Self Medication ,Pediatrics ,Education ,Sex Factors ,Child, Preschool ,Humans ,Female ,Prospective Studies ,Child ,Health Education - Abstract
Description and quantification of self medication in a general paediatric office.Descriptive and prospective study. SITE. Cervantes Health Centre (Guadalajara).387 cases of both sexes until 8 that attended to on demand consultation during the period of two months.36% of the patients were given drugs before attending to consultation and in 18.7% of these cases, the actuation was incorrect. Parents were, mainly the responsible of incorrect treatment. The most often registered pathology was common cold. We did not found relation between self medication and the next variables: child's age or sex, parents' age or studies, number of children in the family, number of consultation for the same pathologic event and mother working outside home.Self medication is a common practice. Parents should be instructed about management of the commonest pathologies and when they should ask the doctor.
- Published
- 1994
18. Intermediate scales of symmetry breaking in Calabi-Yau models
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M. Masip
- Published
- 1992
19. Absceso de pulmón y síndrome de Caplan
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M. Masip López, M.A. Carbonell Rabanal, and M. Morales Ballesteros
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Pulmonary and Respiratory Medicine ,business.industry ,Medicine ,business ,Humanities - Published
- 1991
20. Origin of the High-energy Neutrino Flux at IceCube.
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J. M. Carceller, J. I. Illana, M. Masip, and D. Meloni
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NEUTRINO astrophysics ,COSMIC rays ,INTERSTELLAR medium ,ENERGY security ,COEFFICIENTS (Statistics) - Abstract
We discuss the spectrum of the different components in the astrophysical neutrino flux reaching the Earth, and the possible contribution of each component to the high-energy IceCube data. We show that the diffuse flux from cosmic ray (CR) interactions with gas in our galaxy implies just two events among the 54-event sample. We argue that the neutrino flux from CR interactions in the intergalactic (intracluster) space depends critically on the transport parameter δ describing the energy dependence in the diffusion coefficient of galactic CRs. Our analysis motivates a neutrino spectrum with a drop at PeV energies that fits the data well, including the non-observation of the Glashow resonance at 6.3 PeV. We also show that a CR flux described by an unbroken power law may produce a neutrino flux with interesting spectral features (bumps and breaks) related to changes in the CR composition. [ABSTRACT FROM AUTHOR]
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- 2018
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21. Probing TeV gravity at neutrino telescopes
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José Ignacio Illana Calero, Masip, M., Meloni, D., J. I., Illana, M., Masip, and Meloni, Davide
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High Energy Physics - Phenomenology ,General Relativity and Quantum Cosmology ,High Energy Physics - Phenomenology (hep-ph) ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,High Energy Physics::Experiment - Abstract
Models with extra dimensions and the fundamental scale at the TeV could imply sign als in large neutrino telescopes due to gravitational scattering of cosmogenic neu trinos in the detection volume. Apart from the production of microscopic black hol es, extensively studied in the literature, we present gravity-mediated interactions at larger distances, that can be calculated in the e ikonal approximation. In these elastic processes the neutrino loses a small fracti on of energy to a hadronic shower and keeps going. The event rate of these events is higher than that of black hole formation and the signal is distinct: no charged leptons and possibly multiple-bang events., Comment: 5 pages; to appear in the proceedings of the Workshop on Exotic Physics with Neutrino Telesocpes, Uppsala 20-22 September 2006
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- 2006
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22. Cosmogenic Neutrinos and New Physics Signal at Neutrino Telescopes
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Manuel Masip, Davide Meloni, J. I. Illana, J. I., Illana, M., Masip, and Meloni, Davide
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Physics ,Particle physics ,Astrophysics::High Energy Astrophysical Phenomena ,Solar neutrino ,Physics beyond the Standard Model ,High Energy Physics::Phenomenology ,Astrophysics::Instrumentation and Methods for Astrophysics ,Eikonal approximation ,Standard Model ,Black hole ,Micro black hole ,Neutrino detector ,High Energy Physics::Experiment ,Neutrino - Abstract
Cosmogenic neutrinos reach the Earth with energies around 109 GeV, and their interactions with matter will be measured in upcoming experiments (Auger, IceCube). Models with extra dimensions and the fundamental scale at the TeV could imply signals in these experiments. In particular, besides the production of microscopic black holes by cosmogenic neutrinos, gravity‐mediated interactions at larger distances (that can be calculated in the eikonal approximation) can take place. In these processes a neutrino of energy Ev interacts elastically with a parton inside a nucleon, loses a small fraction y of its energy, and starts a hadronic shower of energy yEv ≪ Ev. We show that for the expected fluxes of cosmogenic neutrinos these elastic processes give a stronger signal than black hole production in neutrino telescopes and that the energy distribution of contained hadronic showers can help to distinguish between eikonal and black hole or Standard Model events. On the other hand, the absence of any signal at IceCu...
- Published
- 2005
23. Persistence, effectiveness, and tolerability of anti-calcitonin gene-related peptide monoclonal antibodies in patients with chronic migraine.
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de Dios A, Pagès-Puigdemont N, Ojeda S, Riera P, Pelegrín R, Morollon N, Belvís R, Real J, and Masip M
- Abstract
Objective: To evaluate, in patients with chronic migraine (CM) in real-world conditions, the persistence, effectiveness, and tolerability of erenumab, fremanezumab, and galcanezumab anti-calcitonin gene-related peptide (anti-CGRP) monoclonal antibodies (mAbs) and the persistence and effects of switching., Background: Anti-CGRP mAbs represent a novel therapeutic approach to the management of CM; however, real-world data on persistence, effectiveness, and tolerability, especially after switching, are scarce., Methods: This was a retrospective observational cohort study including all patients with CM treated with erenumab, fremanezumab, and/or galcanezumab in a tertiary hospital between January 2019 and December 2022. Treatment persistence was measured as the number of days between treatment start and end dates or the end of follow-up and also as a percentage of persistent patients at 3, 6, and 12 months; effectiveness as a ≥50% reduction in monthly migraine days (MMD); and tolerability as the number and type of adverse events., Results: Included were 281 patients (383 treatments) with CM (91.5% [257/281] female) receiving anti-CGRP mAbs. Median (interquartile range [IQR]) treatment persistence was 267 (103-550) days. At 12 months, persistence was greater for the first (66.7%) compared to the second (49.8%) and third (37.2%) anti-CGRP mAb treatments (hazard ratio [HR] = 1.93, 95% confidence interval [CI]: 1.35-2.74; HR = 2.75, 95% CI: 1.69-4.47, respectively). Persistence minimum observed median (IQR) was also greater for the first (291 [112-594] days) compared to both the second (188 [90-403] days; p < 0.001) and third (167 [89-352] days; p < 0.001) anti-CGRP mAb treatments. For the first anti-CGRP mAb treatment, there were no differences in persistence among the different drugs. In terms of effectiveness of the first, second, and third anti-CGRP mAb treatments, a ≥50% reduction in MMD was achieved by 57.6% (117/203), 25.0% (11/44), and 11.8% (2/17) of patients, respectively, at 3 months, and by 55.8% (87/156), 29.6% (8/27), and 12.5% (1/8) of patients, respectively, at 6 months. At 12 months, no significant effectiveness differences were observed among anti-CGRP mAb treatments. As for tolerability, 55 adverse events were reported by 43 (15.3%) patients, mostly mild and leading to treatment discontinuation in only 14 (5.0%) patients. The most common adverse events were constipation, injection site reaction, and pruritus. Erenumab patients (3%, 3/99) experienced a higher rate of discontinuation for constipation., Conclusions: Our findings showed a 12-month higher treatment persistence with the use of a first anti-CGRP mAb treatment when the switch to a second treatment was due to ineffectiveness or severe side events. This persistence was lower after a second or third anti-CGRP. Additionally, in terms of effectiveness, the first anti-CGRP treatment achieved a higher response in terms of ≥50% reduction in MMD; however, some patients may benefit from a switching strategy. Finally, the tolerability profile for anti-CGRP mAbs was favorable. Further studies are needed to identify predictors of response after switching from the first anti-CGRP mAb treatment., (© 2024 American Headache Society.)
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- 2024
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24. Designing an integrated care pathway for spondyloarthritis: A Lean Thinking approach.
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Lobo-Prat D, Sainz L, Laiz A, De Dios A, Fontcuberta L, Fernández S, Masip M, Riera P, Pagès-Puigdemont N, Ros S, Gomis-Pastor M, and Corominas H
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Introduction: Integrated care pathways (ICPs) are crucial for delivering individualised care. However, the development of ICPs is challenging and must be well designed to provide the expected benefits. Regarding this, healthcare organisations are increasingly adopting management systems based on Lean Thinking to improve their organisational processes by eliminating non-value-added steps. This study elucidates the process and evaluates the impact of applying Lean Thinking to redesign an ICP for patients with spondyloarthritis, a chronic inflammatory disease affecting young adults., Methods: A multidisciplinary team was assembled and trained in Lean Thinking. Patient's perspective was gathered through a focus group. Guided by an expert methodologist, the team constructed a value stream map of the entire care pathway and analysed each step. Five work streams were defined to increase value at each step, leading to targeted process improvements. Key process and outcome metrics were collected and compared in 2-month baseline and post-implementation audits., Results: A total of 118 patients were included in the baseline audit (September-October 2022), and 116 in the post-implementation audit (January-February 2023). Process redesign resulted in statistically significant improvements (p < 0.05), including a reduction in the mean number of hospital visits per patient over a 2-month period from 2.54 (SD = 0.93) to 1.84 (SD = 0.79), an increase in complementary exams scheduled on the same day (81.4% to 94.8%) and an increase in baseline disease and treatment education (from 22.2% to 84.2% and from 18.2% to 84.6%, respectively). Regarding standardisation of clinical practice, there were significant increases in collecting data for medical records on composite activity indices (76.3% to 95.7%), reporting of pharmacological treatment adherence (68.6% to 94%) and providing nonpharmacological recommendations (31.3% to 95.7%)., Conclusions: The application of Lean Thinking to redesign the spondyloarthritis ICP led to significant improvements in outpatient appointment scheduling, reduced patient hospital visits, improved interdepartmental coordination and standardised clinical practice., (© 2024 John Wiley & Sons Ltd.)
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- 2024
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25. Complementary and alternative medicine in HIV care: frequency of consumption, risks and interactions with antiretroviral therapy.
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Colominas-González E, De Antonio M, Masip M, Martin Conde MT, Cardona G, Fresán Restituto D, Comas D, Roch MA, López B, Torres-Bondia FI, Retamero A, Knobel H, and Luque S
- Abstract
Objectives: People living with HIV (PLWH) are common users of complementary and alternative medicine (CAM). The main objective of this study was to study the frequency and patterns of CAM natural products use in a large cohort of PLWH and to identify potential drug-drug interactions (DDIs) and the impact on their antiretroviral treatment (ART) adherence and efficacy., Methods: This was a cross-sectional multicenter survey including 420 PLWH from different Spanish hospitals. Participants completed a face-to-face questionnaire on CAM consumption and different sociodemographic and clinical data were collected. DDIs between CAM and ART were identified and classified according to the Liverpool University Database and patient factors related to CAM consumption were assessed., Results: 420 participants were included (82.6% male, mean age 47 years); 209 patients (49.8%) were taking at least one CAM. The most consumed CAM were green, black and red tea (n=146, 25.4%), ginger (n=26, 4.5%), fish oil (n=25, 4.4%) and cannabis (n=24, 4.2%). An ART based on integrase inhibitors was the only factor independently associated with CAM consumption (OR 1.54, 95% CI 1.04 to 2.26). 50 potential CAM-ART interactions in 43 (20.6%) patients taking CAM were identified, being clinically significant in 80% of the cases. CAM products most frequently involved with a potential significant DDI were supplements containing divalent cations (n=11) and garlic (n=7). No differences in ART efficacy and adherence were observed between patients with and without CAM consumption., Conclusions: Almost 50% of patients were taking at least one CAM product and its use was associated with an integrase inhibitor based ART. One out of every six patients was at risk of presenting with an interaction between a CAM and their ART, confirming the need to review continuously the use of CAM as part of the medication review process., Competing Interests: Competing interests: EC-G has received fees from Gilead, Abbvie y Amgen as a speaker. MDA has received fees from VIIV and MDS as a speaker. MM has received compensation for presentations from Janssen-Cilag and Merck Sharp & Dohme, research funding from Gilead Sciences as well as support for attending meetings and/or travel from Janssen-Cilag, ViiV Healthcare and Gilead Sciences. GC has served as a speaker or has received advisory fees from AbbVie, Biogen, Jansen-Cilag, MSD, Pfizer and UCB. SL has received fees from Pfizer, Shionogi, Angelini and Advanz Pharma as a speaker and participant in advisory board meetings. Other authors declare no conflicts of interest, (© European Association of Hospital Pharmacists 2024. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2024
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26. Developing a mHealth intervention to redesign the current journey for people living with HIV: A qualitative study.
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De Dios A, Masip M, Pagès-Puigdemont N, Riera P, Gracia Mateo M, Gutiérrez MDM, Mangues MA, and Gomis-Pastor M
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- Humans, HIV, Quality of Life, Qualitative Research, Telemedicine, HIV Infections drug therapy
- Abstract
Objective: People living with human immunodeficiency virus could particularly benefit from mobile health (mHealth). The objective of the study was to contribute to the design and development of a new standard of care for people living with human immunodeficiency virus and the mHealth app needed to support it by 1) exploring the view of people living with human immunodeficiency virus and healthcare professionals on the possibilities of mHealth tools on HIV care, and 2) implementing their feedback into the new app and into the new journey of people living with human immunodeficiency virus., Method: The study was conducted in two different phases: phase one was to apprise patients' and healthcare professionals' perspectives on mHealth using the qualitative methodology of the focus groups, whereas phase two aimed to implement their feedback into the application., Results: A total of five people living with human immunodeficiency virus and nine healthcare professionals (three clinical pharmacists, three nurses, two physicians, and one pharmacy technician) participated in the focus groups. The patients identified the following main aspects to be improved in the current patients' journey: insufficient information (n = 5), lack of general population disease awareness (n = 5), and medication dispensation model (n = 3). Moreover, healthcare professionals identified the next health outcomes to be enhanced with mHealth tools: patients' quality of life (n = 7), control of the disease (n = 5) and comorbidities (n = 3), and adherence to medication (n = 5). According to these needs, the new healthcare model was designed. The mHealth was provided with different features, such as information about the disease, health promotion and prevention, the possibility of two-way patient- healthcare professionals communication, or synchronization with other devices. The new human immunodeficiency virus care journey and the app are currently being tested in a group of people living with human immunodeficiency virus in real-world conditions in our hospital., Conclusions: Improving patients' quality of life, therapeutic adherence, or disease control are key objectives for optimizing people living with human immunodeficiency virus care. Our digital health tool and the new healthcare model have been implemented based on end-users' feedback to achieve better patients-healthcare professionals communication and patient engagement with their care., (Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.)
- Published
- 2022
27. A cohort study of guselkumab in the treatment of psoriasis refractory to previous biologic therapies: effectiveness, safety and adherence.
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Medina-Catalán D, Riera P, Pagès-Puigdemont N, Masip M, López-Ferrer A, Vilarrasa E, and Puig L
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- Antibodies, Monoclonal, Humanized, Biological Therapy, Cohort Studies, Humans, Retrospective Studies, Severity of Illness Index, Treatment Outcome, Antibodies, Monoclonal adverse effects, Psoriasis diagnosis, Psoriasis drug therapy
- Abstract
Background Guselkumab is indicated for moderate-to-severe plaque psoriasis. Data from real-life clinical practice regarding its use are scarce, especially concerning patients who relapse after previous biologic therapies. Aim This study aimed to evaluate the effectiveness, safety, and adherence to guselkumab in psoriasis refractory to biologic therapies. Method This real-life, retrospective study included patients who initiated guselkumab between February 2019 and October 2020. The main objective was to assess effectiveness, expressed as the psoriasis area and severity index (PASI) ≤5, ≤2 and 0, at the first follow-up medical visit. As secondary effectiveness outcomes, we assessed the body surface area (BSA) and dermatology life quality index (DLQI). We also evaluated adverse events and adherence (using the medication possession ratio [MPR]). Results The study included 35 patients who had previously received a median of two biologic drugs. The median basal PASI score (IQR) was 11 (7.3-15.9), decreasing to 0 (0-1.4) at first follow-up medical visit. At this point, 32 patients (94.1%) reached PASI ≤5, 28 (82.4%) PASI ≤2 and 19 (55.9%) PASI 0. We also found statistically significant improvements in PASI, BSA and DLQI at first follow-up (p<0.001). Three patients developed adverse events. Most patients (N=29, 85.3%) had an MPR ≥90%. The MPR was not associated with PASI score at first follow-up. Conclusion Our study supports evidence that guselkumab is an effective and safe drug in psoriasis refractory to biologic therapies. Adherence to treatment is not related to effectiveness, suggesting that, in some cases, the interval between doses could be increased., (© 2022. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
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- 2022
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28. Behavioural Development of Three Former Pet Chimpanzees a Decade after Arrival at the MONA Sanctuary.
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Feliu O, Masip M, Maté C, Sánchez-López S, Crailsheim D, and Kalcher-Sommersguter E
- Abstract
Chimpanzees used as pets and in the entertainment industry endure detrimental living conditions from early infancy onwards. The preferred option for ending their existence as pet or circus chimpanzees is their rescue and transfer to a primate sanctuary that will provide them with optimal living and social conditions, so that they can thrive. In this case study, we had the rare opportunity to compare the activity budgets of three chimpanzees from their time as pets in 2004 to their time living at the MONA sanctuary in 2020, after almost a decade in the centre. We found their behaviour patterns changed in accordance with the sanctuaries' rehabilitation objectives. Resting periods increased considerably while vigilance simultaneously declined sharply. Moreover, the chimpanzees' social competence increased as allogrooming became the predominant social behaviour, and agonistic interactions diminished even though they were living within a larger social group at the sanctuary. All three chimpanzees expanded their allogrooming and proximity networks at the sanctuary, which included new group members, but they maintained the closest relationships to those conspecifics who they were rescued with. In conclusion, these findings suggest that the sanctuary environment and social group setting made it possible for these three chimpanzees to improve their social competence and increase their well-being over time.
- Published
- 2022
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29. Determinants of medication adherence among chronic patients from an urban area: a cross-sectional study.
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Pagès-Puigdemont N, Tuneu L, Masip M, Valls P, Puig T, and Mangues MA
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- Chronic Disease, Cross-Sectional Studies, Female, Humans, Male, Middle Aged, Polypharmacy, Spain, Surveys and Questionnaires, Urban Population, Medication Adherence statistics & numerical data
- Abstract
Background: Medication adherence is a complex area of behaviour. Little is known about what influences chronic patients to take their medicines. This study has aimed to compare and contrast the health-related beliefs, experiences and types of behaviour typical among patients who have at least one chronic condition and are following a pharmacological treatment in accordance with their level of medication adherence., Methods: A questionnaire-based cross-sectional study, consisting of socio-demographic data, the 4-item Morisky-Green scale and 37 statements about health beliefs, perceptions and experiences, was conducted at different levels of healthcare (primary and tertiary settings)., Results: A total of 577 questionnaires were analyzed. Respondents had a mean age of 64 and took an average of 4.6 drugs. Optimal adherence was reported by 58.6% of respondents. Bivariate analysis showed adherent subjects were older, took more medications, were in better spirits and had greater confidence and information regarding their treatment. Multivariate analysis found older age and the statements 'My doctor periodically reviews my treatment' and 'I am motivated to continue with the treatment' to be significantly related to medication adherence, while 'I make variations when taking medication depending on how I feel' was significant for medication non-adherence., Conclusion: Medication non-adherence is common among chronic patients. Patient-centred approaches should be implemented in daily clinical practice as patient health beliefs, experiences and conduct influence medication-taking. Motivational interviewing might improve medication adherence in permitting emotional state managing and increasing educational skills, patient motivation and confidence between patients and healthcare providers., (© The Author(s) 2018. Published by Oxford University Press on behalf of the European Public Health Association. All rights reserved.)
- Published
- 2019
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30. Prevalence and clinical impact of recreational drug consumption in people living with HIV on treatment: a cross-sectional study.
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Garin N, Zurita B, Velasco C, Feliu A, Gutierrez M, Masip M, and Mangues MA
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- Adolescent, Adult, CD4-Positive T-Lymphocytes, Cross-Sectional Studies, Female, HIV Infections drug therapy, HIV Infections psychology, Humans, Male, Medication Adherence psychology, Middle Aged, Prevalence, Risk-Taking, Spain epidemiology, Substance-Related Disorders psychology, Anti-HIV Agents therapeutic use, HIV Infections epidemiology, Illicit Drugs adverse effects, Medication Adherence statistics & numerical data, Sexual Behavior drug effects, Substance-Related Disorders epidemiology
- Abstract
Objectives: Drug interactions, poor adherence to medication and high-risk sexual behaviour may occur in individuals with HIV using recreational drugs. Thus, we aimed to assess the prevalence of recreational drugs use and to explore its clinical impact in HIV patients on treatment., Methods: Observational, cross sectional, study conducted in a 700 bed university hospital, Barcelona, Spain. A total of 208 adults living with HIV on treatment were included. A questionnaire was administered by clinical pharmacists, including evaluation of sociodemographic variables, past 12-month drug consumption, adherence to antiretrovirals (Simplified Medication Adherence Questionnaire) and high-risk sexual behaviour (condomless sex/multiple partners). Additional data were obtained from clinical records. Recreational drug-antiretroviral interactions were checked in reference databases. Prevalence was calculated for 5% precision and 95% CI. Crude and adjusted binary logistic regressions were performed to identify associations between recreational drug use and adherence problems, and between recreational drug use and high-risk sexual behaviour., Results: From the overall sample, 92 participants (44.2%) consumed recreational drugs over the past 1 year. Of these, 44 (48.8%) had used different types of recreational drugs in this period. We detected 11 recreational substances, including sildenafil and nitrites. The most consumed drugs were: cannabis (68.5%), cocaine (45.5%), nitrites (31.5%), sildenafil (28.3) and ecstasy (19.6%). Relevant interactions occurred in 46 (50%) of the individuals consuming drugs. Recreational drug consumption was found to be related to adherence problems with antiretrovirals (OR: 2.51 (95% CI 1.32 to 4.77) p=0.005) and high-risk sexual behaviour (OR: 2.81 (95% CI 1.47 to 5.39) p=0.002)., Conclusions: Recreational drugs are frequently used by HIV patients on treatment. Classical drugs and new substances consumed in sexual context are usual. Recreational drug consumption interferes with several clinical outcomes, including potentially relevant interactions between drugs and antiretrovirals, adherence problems and high-risk sexual behaviour. Thus, there is the urgent need of implementing patient-centred care involving recreational drug consumption., Competing Interests: Conflicts of Interest: None declared., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.)
- Published
- 2017
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31. Patients' Perspective of Medication Adherence in Chronic Conditions: A Qualitative Study.
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Pagès-Puigdemont N, Mangues MA, Masip M, Gabriele G, Fernández-Maldonado L, Blancafort S, and Tuneu L
- Subjects
- Attitude to Health, Comorbidity, Female, Humans, Male, Middle Aged, Motivation, Primary Health Care methods, Qualitative Research, Chronic Disease psychology, Chronic Disease therapy, Decision Making, Long-Term Care psychology, Medication Adherence psychology, Professional-Patient Relations
- Abstract
Introduction: About 50% of patients do not take their long-term therapy for chronic conditions as prescribed. Many studies have centered on patients' adherence to a specific treatment or single conditions, but few have taken all chronic conditions into consideration from a patient's perspective. This study aims to explore factors that impact on drug compliance and to identify strategies to improve this from the perspective of patients with at least one chronic condition., Methods: Patients were recruited by healthcare professionals from a hospital pharmacy, four community pharmacies, patient associations, and a primary care center in Barcelona. Five focus groups were conducted (N = 36). Conversations were audiotaped and transcribed verbatim to allow qualitative analysis., Results: Study subjects were aged 39-90 years (mean 65 years) and the mean number of comorbidities per patient was 2.3 (range 1-7). The main modifiers of therapeutic conduct were: patients' health beliefs, patient-prescriber relationships, and patients' motivation and perception of illness control. Study participants wanted greater participation in decision-making concerning their health and increased education about their illness and medication. They also wanted individualized healthcare that took their preferences and personal and emotional issues into account., Conclusion: Our results highlight how the patient-prescriber's relationship and factors such as health beliefs, motivation and perception of illness control impact on medication adherence in chronic patients. Future interventions to optimize adherence to treatment should focus on shared decision-making and more extensive health education., Funding: Celgene Corporation.
- Published
- 2016
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32. Prevalence and detection of neuropsychiatric adverse effects during hepatitis C treatment.
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Masip M, Tuneu L, Pagès N, Torras X, Gallego A, Guardiola JM, Faus MJ, and Mangues MA
- Subjects
- Adult, Age Factors, Aged, Antiviral Agents therapeutic use, Drug Therapy, Combination, Female, Health Status, Humans, Interferon alpha-2, Interferon-alpha therapeutic use, Male, Medication Adherence, Middle Aged, Polyethylene Glycols therapeutic use, Prevalence, RNA, Viral, Recombinant Proteins administration & dosage, Recombinant Proteins therapeutic use, Retrospective Studies, Ribavirin therapeutic use, Risk Factors, Severity of Illness Index, Sex Factors, Antiviral Agents adverse effects, Hepatitis C, Chronic drug therapy, Interferon-alpha administration & dosage, Mental Disorders chemically induced, Polyethylene Glycols administration & dosage
- Abstract
Background: Current treatment combinations for chronic hepatitis C virus infection still include pegylated interferon and ribavirin despite the new therapeutic options available. Interferon-based treatments are associated with a high incidence of adverse effects. Central nervous system events are among the most frequent adverse drug reactions and their influence on treatment adherence and effectiveness is controversial., Objective: The aim of the study was to evaluate neuropsychiatric adverse effects of interferon-based treatment for chronic hepatitis C in standard multidisciplinary clinical practice. Risk factors for these adverse effects and their impact on adherence and sustained viral response were also evaluated. Setting Ambulatory care pharmacy in coordination with the liver unit and the infectious diseases unit at a 650-bed tertiary university hospital., Methods: We included all consecutive patients with chronic hepatitis C who completed treatment with pegylated interferon and ribavirin between 2005 and 2013. All patients underwent a multidisciplinary follow-up during treatment., Main Outcome Measures: Neuropsychiatric adverse effects were evaluated in relation to severity, management and outcome. The presence of anxiety and depression was evaluated by means of specific tests., Results: A total of 717 treatments in 679 patients were included. During treatment, we detected 1679 neuropsychiatric adverse effects in 618 patients (86.2 %), generating 1737 clinical interventions. Fifty-seven (3.3 %) neuropsychiatric adverse effects were severe and 2 (0.1 %) were life-threatening (suicidal attempts). Most neuropsychiatric adverse effects (1555 events, 92.6 %) resolved without sequelae. Psychiatric medication was required in 289 patients (40.3 %). Sustained viral response was achieved in 400 cases (55.8 %) and was associated with adherence (OR = 1.942, 95 % CI = 1.235-3.052, p = 0.004). A multivariate analysis did not show any relationship between neuropsychiatric adverse effects and treatment adherence or sustained viral response. A psychiatric history was a strong risk factor for depression, anxiety and other psychiatric disorders during treatment., Conclusion: Neuropsychiatric adverse effects during interferon-based treatments in patients with chronic hepatitis C were common but mostly mild or moderate. Early detection and accurate multidisciplinary management avoided treatment discontinuation, ensuring adherence and attaining sustained viral response. The identified risk factors could be used to determine patients eligible for interferon-free combinations, thus optimizing health system economics.
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- 2015
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33. Reprogramming with defined factors: from induced pluripotency to induced transdifferentiation.
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Masip M, Veiga A, Izpisúa Belmonte JC, and Simón C
- Subjects
- Cell Transdifferentiation, Fibroblasts cytology, Humans, Kruppel-Like Factor 4, Neurons cytology, Cell Differentiation, Cellular Reprogramming, Pluripotent Stem Cells cytology
- Abstract
Ever since work on pluripotency induction was originally published, reporting the reprogramming of somatic cells to induced pluripotent stem cells (iPS cells) by the ectopic expression of the four transcription factors Oct4, Sox2, Klf4 and c-Myc, high expectations regarding their potential use for regenerative medicine have emerged. Very recently, the direct conversion of fibroblasts into functional neurons with no prior pluripotent stage has been described. Interconversion between adult cells from ontogenically different lineages by an induced transdifferentiation process based on the overexpression of a cocktail of transcription factors, while avoiding transition through an embryonic stem cell-like state, provides a new impetus in the field of regenerative medicine. Here, we review the induced reprogramming of somatic cells with defined factors and analyze their potential clinical use. Beginning with induced pluripotency, we summarize the initial objections including their extremely low efficiency and the risk of tumor generation. We also review recent reports describing iPS cells' capacity to generate viable offspring through tetraploid complementation, the most restrictive pluripotency criterion. Finally, we explore the available evidence for 'induced transdifferentiated cells' as a novel tool for adult cell fate modification.
- Published
- 2010
- Full Text
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34. AUF1 and Hu proteins in the developing rat brain: implication in the proliferation and differentiation of neural progenitors.
- Author
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Hambardzumyan D, Sergent-Tanguy S, Thinard R, Bonnamain V, Masip M, Fabre A, Boudin H, Neveu I, and Naveilhan P
- Subjects
- Animals, Cell Line, Cell Proliferation, Cerebellum metabolism, ELAV-Like Protein 2, ELAV-Like Protein 3, ELAV-Like Protein 4, GAP-43 Protein metabolism, Gene Expression Regulation, Heterogeneous Nuclear Ribonucleoprotein D0, Intermediate Filament Proteins metabolism, Nerve Tissue Proteins metabolism, Nestin, Neurons physiology, Protein Isoforms metabolism, RNA, Messenger metabolism, Rats, Reverse Transcriptase Polymerase Chain Reaction, Cerebellum growth & development, ELAV Proteins metabolism, Heterogeneous-Nuclear Ribonucleoprotein D metabolism, Multipotent Stem Cells cytology, Neurogenesis, Neurons cytology
- Abstract
Posttranscriptional events such as RNA stabilization are important for cell differentiation, but little is known about the impact of AU-rich binding proteins (AUBPs) on the fate of neural cells. Expression of destabilizing AUBPs such as AUF1 and neuronal-specific stabilizing proteins such as HuB, HuC and HuD was therefore analyzed in the developing central nervous system. Real-time RT-PCR indicated a specific developmental pattern in the postnatal cerebellum, with a progressive down-regulation of AUF1 from P1, whereas HuB was strongly up-regulated at about P7. These changes were accompanied by a progressive increase in AUF1p45 and the disappearance of one HuB isoform from P15, suggesting particular roles for these AUBPs in the developing cerebellum. AUF1 was detected in the three main cerebellar layers, whereas Hu proteins were found only in postmitotic neurons. A role for Hu proteins in the early stages of neuronal differentiation is further supported by arrest of cell proliferation following induction of HuB or HuD expression in a neural stem cell line. The decrease in nestin expression suggest that HuD, but not HuB, favors the transition of neural progenitors into early neuroblasts, but other factors are most probably required for their full differentiation into neurons, insofar as GAP-43 was not detected in HuD-transfected cells. These data suggest critical roles for HuB at the very earliest stages of neuronal differentiation, such as cell cycle exit, and HuD might also be involved in the transition of neural progenitors into early neuroblasts. Taken together, the present results strengthen the importance of AUBPs in brain ontogenesis.
- Published
- 2009
- Full Text
- View/download PDF
35. Loss of p53 induces tumorigenesis in p21-deficient mesenchymal stem cells.
- Author
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Rodriguez R, Rubio R, Masip M, Catalina P, Nieto A, de la Cueva T, Arriero M, San Martin N, de la Cueva E, Balomenos D, Menendez P, and García-Castro J
- Subjects
- Animals, Blotting, Western, Cell Transformation, Neoplastic metabolism, Cellular Senescence genetics, Cyclin-Dependent Kinase Inhibitor p16 genetics, Cyclin-Dependent Kinase Inhibitor p16 metabolism, Cyclin-Dependent Kinase Inhibitor p21 genetics, Flow Cytometry, Mesenchymal Stem Cells metabolism, Mice, Mice, Mutant Strains, Mutation, Neoplastic Stem Cells metabolism, Cell Transformation, Neoplastic genetics, Cyclin-Dependent Kinase Inhibitor p21 deficiency, Mesenchymal Stem Cells pathology, Neoplastic Stem Cells pathology, Tumor Suppressor Protein p53 genetics
- Abstract
There is growing evidence about the role of mesenchymal stem cells (MSCs) as cancer stem cells in many sarcomas. Nevertheless, little is still known about the cellular and molecular mechanisms underlying MSCs transformation. We aimed at investigating the role of p53 and p21, two important regulators of the cell cycle progression and apoptosis normally involved in protection against tumorigenesis. Mesenchymal stem cells from wild-type, p21(-/-)p53(+/+), and p21(-/-)p53(+/-) mice were cultured in vitro and analyzed for the appearance of tumoral transformation properties after low, medium, and high number of passages both in vitro and in vivo. Wild-type or p21(-/-)p53(+/+) MSCs did not show any sign of tumoral transformation. Indeed, after short-term in vitro culture, wild-type MSCs became senescent, and p21(-/-)p53(+/+) MSCs showed an elevated spontaneous apoptosis rate. Conversely, MSCs carrying a mutation in one allele of the p53 gene (p21(-/-)p53(+/-) MSCs) completely lost p53 expression after in vitro long-term culture. Loss of p53 was accompanied by a significant increase in the growth rate, gain of karyotypic instability, loss of p16 expression, and lack of senescence response. Finally, these cells were able to form fibrosarcomas partially differentiated into different mesenchymal lineages when injected in immunodeficient mice both after subcutaneous and intrafemoral injection. These findings show that MSCs are very sensitive to mutations in genes involved in cell cycle control and that these deficiencies can be at the origin of some mesodermic tumors.
- Published
- 2009
- Full Text
- View/download PDF
36. Sexual dysfunction in fibromyalgia patients.
- Author
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Orellana C, Casado E, Masip M, Galisteo C, Gratacós J, and Larrosa M
- Subjects
- Adult, Anxiety complications, Arthritis, Rheumatoid complications, Arthritis, Rheumatoid psychology, Brief Psychiatric Rating Scale, Case-Control Studies, Female, Fibromyalgia psychology, Humans, Middle Aged, Depression complications, Fibromyalgia complications, Sexual Dysfunction, Physiological complications, Sexual Dysfunctions, Psychological complications
- Abstract
Objective: To investigate the prevalence of sexual dysfunction in female patients with fibromyalgia (FM), the impact of FM on sexual activity and the factors associated with sexual dysfunction in these patients., Methods: Thirty-one consecutive women with FM were enrolled; two groups of 20 aged-matched healthy women and 26 patients with rheumatoid arthritis (RA) were used as controls. Demographic features were recorded in all patients. A cross-sectional analysis of pain (100-mm VAS scale), anxiety and depression (as determined by the STAI and Beck Depression Inventory scales, respectively) was performed. Sexual function was assessed by the Changes in Sexual Functioning Questionnaire (CSFQ)., Results: FM and RA patients showed a significantly higher rate of sexual dysfunction compared to healthy controls. Sexual dysfunction was more frequent among FM patients (97%) than in RA patients (84%) but without statistical differences. A univariate analysis showed that age (p=0.0002), marital (p=0.036) and work status (p=0.048), pain intensity (p=0.007), level of anxiety (p=0.002), level of depression (p=0.0005), were significantly associated with sexual dysfunction in FM. However, only the intensity of depression was associated with the sexual dysfunction in patients with FM in the multivariate analysis (p=0.012)., Conclusions: Sexual function was very frequently and severely affected in patients with FM and this impairment appeared to be particularly associated with the degree of depression. The recognition of this dysfunction and its inclusion for the multidisciplinary management of FM may contribute to improve quality of life of these patients.
- Published
- 2008
37. [Results of pegylated interferon and ribavirin for the treatment of chronic hepatitis C in clinical practice: a 5-year experience].
- Author
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Vergara M, Gallach M, Dalmau B, Gil M, Miquel M, Rudi N, Gavarro A, Cebollero A, Masip M, and Real J
- Subjects
- Adult, Female, Humans, Interferon alpha-2, Male, Recombinant Proteins, Time Factors, Antiviral Agents therapeutic use, Hepatitis C, Chronic drug therapy, Interferon-alpha therapeutic use, Polyethylene Glycols therapeutic use, Ribavirin therapeutic use
- Abstract
Introduction: Numerous clinical trials have demonstrated the efficacy of treatment with pegylated interferon and ribavirin but little is known about the results obtained in clinical practice., Objective: To evaluate treatment response and factors influencing the treatment of chronic hepatitis C in clinical practice., Material and Methods: Between August 2001 and December 2005, we treated 219 patients with pegylated interferon (alpha 2a -fixed dose, or alpha 2b, according to weight) and ribavirin. Patients with genotype 1 or 4 received treatment with pegylated interferon alpha 2a (180 microg/week) and ribavirin (1000 mg/day if body weight was <75 kg or 1200 mg/day if body weight was >75 kg) or interferon alpha 2b (1.5 microg/kg/week) and ribavirin (10.6 mg/kg/day) for 48 weeks. Patients with genotype 2 or 3 were treated for 24 weeks with the same regimen of pegylated interferon alpha-2a or alpha-2b, but with 800 mg of ribavirin divided in two daily doses. Sustained viral response was defined as absence of HCV-RNA 6 months after the end of treatment., Results: A total of 219 patients were included (69% men; mean age 44+/-10). As epidemiological antecedents, 22.4% of the treated patients had previously consumed drugs parenterally and 22.4% had received blood transfusions before 1992. Forty-seven percent of the patients with liver biopsy had fibrosis bridges or established liver cirrhosis. The genotype was distributed as follows: 69.8% genotype 1, 4.1% genotype 2, 17.8% genotype 3, and 8.2% genotype 4. Of the 219 patients, 76 (35%) were treated with pegylated interferon alpha 2a and 143 (65%) with interferon alpha 2b. Analysis of response by genotype revealed that sustained viral response was obtained in 46% genotype 1, 88.9% genotype 2, 78.9% genotype 3, and 33.3% genotype 4. Univariate analysis showed that the only variable influencing sustained viral response was genotype., Conclusion: Treatment with pegylated interferon and ribavirin in clinical practice shows a similar pattern of sustained viral response to that obtained in clinical research. The main variable correlated with sustained viral response continues to be viral genotype.
- Published
- 2008
- Full Text
- View/download PDF
38. [Auricle therapy].
- Author
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Masip Sales M
- Subjects
- Humans, Acupuncture, Ear, Medicine, Chinese Traditional methods
- Abstract
Auricle therapy is the method which diagnoses and treats the human body via the external ear. The author describes its simple application as its principal characteristics and contrasts these with the efficiency of its results. Furthermore, the author provides a wide range of therapeutic possibilities.
- Published
- 2005
39. Conserved asparagine residue 54 of alpha-sarcin plays a role in protein stability and enzyme activity.
- Author
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Siemer A, Masip M, Carreras N, García-Ortega L, Oñaderra M, Bruix M, Del Pozo AM, and Gavilanes JG
- Subjects
- Amino Acid Substitution, Conserved Sequence, DNA chemistry, Endoribonucleases genetics, Escherichia coli genetics, Escherichia coli metabolism, Fungal Proteins genetics, Models, Molecular, Molecular Sequence Data, Mutation, Protein Conformation, Protein Denaturation, Ribonucleotides chemistry, Spectrometry, Fluorescence, Substrate Specificity, Thermodynamics, Asparagine chemistry, Endoribonucleases chemistry, Endoribonucleases metabolism, Fungal Proteins chemistry, Fungal Proteins metabolism, Proteins chemistry
- Abstract
Asparagine 54 of alpha-sarcin is a conserved residue within the proteins of the ribotoxin family of microbial ribonucleases. It is located in loop 2 of the protein, which lacks repetitive secondary structure elements but exhibits a well-defined conformation. Five mutant variants at this residue have been produced and characterized. The spectroscopic characterization of these proteins indicates that the overall conformation is not changed upon mutation. Activity and denaturation assays show that Asn-54 largely contributes to protein stability, and its presence is a requirement for the highly specific inhibitory activity of these ribotoxins on ribosomes.
- Published
- 2004
- Full Text
- View/download PDF
40. Cosmogenic neutrinos and signals of TeV gravity in air showers and neutrino telescopes.
- Author
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Illana JI, Masip M, and Meloni D
- Abstract
The existence of extra dimensions allows the possibility that the fundamental scale of gravity is at the TeV. If that is the case, gravity could dominate the interactions of ultrahigh energy cosmic rays. In particular, the production of microscopic black holes by cosmogenic neutrinos has been estimated in a number of papers. We consider here gravity-mediated interactions at larger distances, where they can be calculated in the eikonal approximation. We show that for the expected flux of cosmogenic neutrinos these elastic processes give a stronger signal than black hole production in neutrino telescopes. Taking the bounds on the higher-dimensional Planck mass M(D) (D=4 + n) from current air shower experiments, for n=2(6) elastic collisions could produce up to 118 (34) events per year at IceCube. On the other hand, the absence of any signal would imply a bound of M(D) > or approximately 5 TeV.
- Published
- 2004
- Full Text
- View/download PDF
41. Leucine 145 of the ribotoxin alpha-sarcin plays a key role for determining the specificity of the ribosome-inactivating activity of the protein.
- Author
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Masip M, García-Ortega L, Olmo N, García-Mayoral MF, Pérez-Cañadillas JM, Bruix M, Oñaderra M, Martínez del Pozo A, and Gavilanes JG
- Subjects
- Amino Acid Substitution, Binding Sites, Circular Dichroism, Endoribonucleases chemistry, Endoribonucleases genetics, Endoribonucleases pharmacology, Fungi enzymology, Fungi genetics, Hot Temperature, Humans, Hydrogen-Ion Concentration, Inhibitory Concentration 50, Leucine chemistry, Leucine genetics, Models, Molecular, Protein Conformation, Protein Denaturation, RNA Stability, RNA, Ribosomal metabolism, Rhabdomyosarcoma metabolism, Ribosomes drug effects, Tumor Cells, Cultured, Endoribonucleases metabolism, Fungal Proteins, Leucine metabolism, Ribosomes metabolism
- Abstract
Secreted fungal RNases, represented by RNase T1, constitute a family of structurally related proteins that includes ribotoxins such as alpha-sarcin. The active site residues of RNase T1 are conserved in all fungal RNases, except for Phe 100 that is not present in the ribotoxins, in which Leu 145 occupies the equivalent position. The mutant Leu145Phe of alpha-sarcin has been recombinantly produced and characterized by spectroscopic methods (circular dichroism, fluorescence spectroscopy, and NMR). These analyses have revealed that the mutant protein retained the overall conformation of the wild-type alpha-sarcin. According to the analyses performed, Leu 145 was shown to be essential to preserve the electrostatic environment of the active site that is required to maintain the anomalous low pKa value reported for the catalytic His 137 of alpha-sarcin. Enzymatic characterization of the mutant protein has revealed that Leu 145 is crucial for the specific activity of alpha-sarcin on ribosomes.
- Published
- 2003
- Full Text
- View/download PDF
42. Deletion of the NH2-terminal beta-hairpin of the ribotoxin alpha-sarcin produces a nontoxic but active ribonuclease.
- Author
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Garcia-Ortega L, Masip M, Mancheño JM, Oñaderra M, Lizarbe MA, García-Mayoral MF, Bruix M, Martínez del Pozo A, and Gavilanes JG
- Subjects
- Amino Acid Sequence, Base Sequence, DNA Primers, Endoribonucleases genetics, Escherichia coli genetics, Molecular Sequence Data, Protein Conformation, Protein Denaturation, Sequence Deletion, Sequence Homology, Amino Acid, Spectrum Analysis, Endoribonucleases chemistry, Endoribonucleases metabolism, Fungal Proteins
- Abstract
Ribotoxins are a family of highly specific fungal ribonucleases that inactivate the ribosomes by hydrolysis of a single phosphodiester bond of the 28 S rRNA. alpha-Sarcin, the best characterized member of this family, is a potent cytotoxin that promotes apoptosis of human tumor cells after internalization via endocytosis. This latter ability is related to its interaction with phospholipid bilayers. These proteins share a common structural core with nontoxic ribonucleases of the RNase T1 family. However, significant structural differences between these two groups of proteins are related to the presence of a long amino-terminal beta-hairpin in ribotoxins and to the different length of their unstructured loops. The amino-terminal deletion mutant Delta(7-22) of alpha-sarcin has been produced in Escherichia coli and purified to homogeneity. It retains the same conformation as the wild-type protein as ascertained by complete spectroscopic characterization based on circular dichroism, fluorescence, and NMR techniques. This mutant exhibits ribonuclease activity against naked rRNA and synthetic substrates but lacks the specific ability of the wild-type protein to degrade rRNA in intact ribosomes. The results indicate that alpha-sarcin interacts with the ribosome at two regions, i.e. the well known sarcin-ricin loop of the rRNA and a different region recognized by the beta-hairpin of the protein. In addition, this latter protein portion is involved in interaction with cell membranes. The mutant displays decreased interaction with lipid vesicles and shows behavior compatible with the absence of one vesicle-interacting region. In agreement with this conclusion, the deletion mutant exhibits a very low cytotoxicity on human rhabdomyosarcoma cells.
- Published
- 2002
- Full Text
- View/download PDF
43. Arginine 121 is a crucial residue for the specific cytotoxic activity of the ribotoxin alpha-sarcin.
- Author
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Masip M, Lacadena J, Mancheño JM, Oñaderra M, Martínez-Ruiz A, Martínez del Pozo A, and Gavilanes JG
- Subjects
- Amino Acid Substitution, Apoptosis drug effects, Arginine chemistry, Aspergillus enzymology, Aspergillus genetics, Cytotoxins genetics, Endoribonucleases genetics, Humans, Liposomes, Models, Molecular, Mutagenesis, Site-Directed, Mycotoxins genetics, Phospholipids, Protein Conformation, Tumor Cells, Cultured, Cytotoxins chemistry, Cytotoxins toxicity, Endoribonucleases chemistry, Endoribonucleases toxicity, Fungal Proteins, Mycotoxins chemistry, Mycotoxins toxicity
- Abstract
Alpha-sarcin, a cyclizing ribonuclease secreted by the mould Aspergillus giganteus, is one of the best characterized members of a family of fungal ribotoxins. This protein induces apoptosis in tumour cells due to its highly specific activity on ribosomes. Fungal ribotoxins display a three-dimensional protein fold similar to those of a larger group of microbial noncytotoxic RNases, represented by RNases T1 and U2. This similarity involves the three catalytic residues and also the Arg121 residue, whose counterpart in RNase T1, Arg77, is located in the vicinity of the substrate phosphate moiety although its potential functional role is not known. In this work, Arg121 of alpha-sarcin has been replaced by Gln or Lys. These two mutations do not modify the conformation of the protein but abolish the ribosome-inactivating activity of alpha-sarcin. In addition, the loss of the positive charge at that position produces dramatic changes on the interaction of alpha-sarcin with phospholipid membranes. It is concluded that Arg121 is a crucial residue for the characteristic cytotoxicity of alpha-sarcin and presumably of the other fungal ribotoxins.
- Published
- 2001
- Full Text
- View/download PDF
44. TeV strings and the neutrino-nucleon cross section at ultrahigh energies.
- Author
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Cornet F, Illana JI, and Masip M
- Abstract
In scenarios with the fundamental unification scale at the TeV one expects string excitations of the standard model fields at accessible energies. We study the neutrino-nucleon cross section in these models. We show that duality of the scattering amplitude forces the existence of a tower of massive leptoquarks that mediate the process in the s channel. Using the narrow-width approximation we find a sum rule for the production rate of resonances with different spin at each mass level. We show that these contributions can increase substantially the standard model neutrino-nucleon cross section, although they seem insufficient to explain the cosmic ray events above the Greisen-Zatsepin-Kuz'min cutoff energy.
- Published
- 2001
- Full Text
- View/download PDF
45. The solubility of the ribotoxin alpha-sarcin, produced as a recombinant protein in Escherichia coli, is increased in the presence of thioredoxin.
- Author
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García-Ortega L, Lacadena J, Lacadena V, Masip M, De Antonio C, Martínez-Ruiz A, and Martínez Del Pozo A
- Subjects
- Aspergillus genetics, Aspergillus metabolism, Endoribonucleases genetics, Endoribonucleases metabolism, Escherichia coli genetics, Escherichia coli growth & development, Plasmids genetics, Protein Conformation, Protein Synthesis Inhibitors metabolism, Recombinant Proteins chemistry, Recombinant Proteins genetics, Recombinant Proteins metabolism, Solubility, Endoribonucleases chemistry, Escherichia coli metabolism, Fungal Proteins, Protein Synthesis Inhibitors chemistry, Thioredoxins metabolism
- Abstract
The yield of purified recombinant alpha-sarcin increases approximately three- to fourfold when this toxin is co-expressed in Escherichia coli with thioredoxin. This increased production is attributed to the existence, in the presence of thioredoxin, of a reducing environment which allows rearrangement of incorrect disulphide bonds to produce the soluble native conformation. The protein thus produced retains the structural, spectroscopic and enzymatic features of the natural fungal alpha-sarcin.
- Published
- 2000
- Full Text
- View/download PDF
46. Scale dependence of quark mass matrices in models with flavor symmetries.
- Author
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Aguilar-Saavedra JA and Masip M
- Published
- 1996
- Full Text
- View/download PDF
47. Spontaneous CP violation in supersymmetric models with four Higgs doublets.
- Author
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Masip M and Rasin A
- Published
- 1995
- Full Text
- View/download PDF
48. Determination of ||Vts|| from D-->K*l nu and B-->K* gamma data via heavy quark symmetry and perturbative QCD.
- Author
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Griffin PA, Masip M, and McGuigan M
- Published
- 1994
- Full Text
- View/download PDF
49. [Self medication in general pediatrics].
- Author
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Rodríguez Benito U, Magro Peteguer R, Masip López M, Vacas Garrido R, and Urbano Rodríguez B corrected to Rodríguez Benito U]
- Subjects
- Adult, Age Factors, Child, Child, Preschool, Education, Female, Health Education, Humans, Infant, Male, Parents, Prospective Studies, Sex Factors, Pediatrics, Self Medication
- Abstract
Objective: Description and quantification of self medication in a general paediatric office., Design: Descriptive and prospective study. SITE. Cervantes Health Centre (Guadalajara)., Patients: 387 cases of both sexes until 8 that attended to on demand consultation during the period of two months., Measurements and Main Results: 36% of the patients were given drugs before attending to consultation and in 18.7% of these cases, the actuation was incorrect. Parents were, mainly the responsible of incorrect treatment. The most often registered pathology was common cold. We did not found relation between self medication and the next variables: child's age or sex, parents' age or studies, number of children in the family, number of consultation for the same pathologic event and mother working outside home., Conclusions: Self medication is a common practice. Parents should be instructed about management of the commonest pathologies and when they should ask the doctor.
- Published
- 1994
50. Discrete gauge symmetries in supersymmetric grand unified models.
- Author
-
de Montigny M and Masip M
- Published
- 1994
- Full Text
- View/download PDF
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