1
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Augusto AM, Raposeira H, Horta P, Mata VA, Aizpurua O, Alberdi A, Jones G, Razgour O, Santos SAP, Russo D, Rebelo H. Bat diversity boosts ecosystem services: Evidence from pine processionary moth predation. Sci Total Environ 2024; 912:169387. [PMID: 38110100 DOI: 10.1016/j.scitotenv.2023.169387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/12/2023] [Accepted: 12/12/2023] [Indexed: 12/20/2023]
Abstract
Coniferous forests contribute to the European economy; however, they have experienced a decline since the late 1990s due to an invasive pest known as the pine processionary moth, Thaumetopoea pityocampa. The impacts of this pest are increasingly exacerbated by climate change. Traditional control strategies involving pesticides have had negative effects on public health and the environment. Instead, forest managers seek a more ecological and sustainable approach to management that promotes the natural actions of pest control agents. This study aims to evaluate the role of bats in suppressing pine processionary moths in pine forests and examine how the bat community composition and abundance influence pest consumption. Bats were sampled in the mountainous environment of the Serra da Estrela in central Portugal to collect faecal samples for DNA meta-barcoding analysis. We assessed the relationship between a) bat richness, b) bat relative abundance, c) bat diet richness, and the frequency of pine processionary moth consumption. Our findings indicate that sites with the highest bat species richness and abundance exhibit the highest levels of pine processionary moth consumption. The intensity of pine processionary moth consumption is independent of insect diversity within the site. The highest occurrence of pine processionary moth presence in bat diets is primarily observed in species that forage in cluttered habitats. A typical predator of pine processionary moths among bats is likely to be a forest-dwelling species that specialises in consuming Lepidoptera. These species primarily use short-range echolocation calls, which are relatively inaudible to tympanate moths, suitable for locating prey in cluttered environments, employing a gleaning hunting strategy. Examples include species from the genera Plecotus, Myotis, and Rhinolophus. This study enhances our understanding of the potential pest consumption services provided by bats in pine forests. The insights gained from this research can inform integrated pest management practices in forestry.
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Affiliation(s)
- A M Augusto
- ICS, Instituto de Ciências Sociais, Universidade de Lisboa, Av. Professor Aníbal de Bettencourt, 9, 1600-189 Lisboa, Portugal.
| | - H Raposeira
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, 4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal; Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto 4099-002, Portugal
| | - P Horta
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, 4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal; Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto 4099-002, Portugal
| | - V A Mata
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, 4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
| | - O Aizpurua
- Globe Institute, University of Copenhagen, 1350 Copenhagen, Denmark
| | - A Alberdi
- Globe Institute, University of Copenhagen, 1350 Copenhagen, Denmark
| | - G Jones
- School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol BS8 1TQ, UK
| | - O Razgour
- Biosciences, University of Exeter, Hatherly Laboratories, Prince of Wales Road, Exeter EX4 4PS, UK
| | - S A P Santos
- Instituto Politécnico de Setúbal, ESTBarreiro, Rua Américo da Silva Marinho, 2839-001 Lavradio, Portugal; LEAF-Linking Landscape, Environment, Agriculture and Food Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - D Russo
- Laboratory of Animal Ecology and Evolution (AnEcoEvo), Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, I-80055 Portici, Napoli, Italy
| | - H Rebelo
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, 4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal; Instituto Politécnico de Setúbal, ESS, Campus da Estefanilha, Setúbal, Portugal; NBI, Natural Business Intelligence, Régia Douro Park, 5000-033 Andrães, Vila Real, Portugal
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2
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Deng Z, Loyher PL, Lazarov T, Li L, Shen Z, Bhinder B, Yang H, Zhong Y, Alberdi A, Massague J, Sun JC, Benezra R, Glass CK, Elemento O, Iacobuzio-Donahue CA, Geissmann F. The nuclear factor ID3 endows macrophages with a potent anti-tumour activity. Nature 2024; 626:864-873. [PMID: 38326607 PMCID: PMC10881399 DOI: 10.1038/s41586-023-06950-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 12/07/2023] [Indexed: 02/09/2024]
Abstract
Macrophage activation is controlled by a balance between activating and inhibitory receptors1-7, which protect normal tissues from excessive damage during infection8,9 but promote tumour growth and metastasis in cancer7,10. Here we report that the Kupffer cell lineage-determining factor ID3 controls this balance and selectively endows Kupffer cells with the ability to phagocytose live tumour cells and orchestrate the recruitment, proliferation and activation of natural killer and CD8 T lymphoid effector cells in the liver to restrict the growth of a variety of tumours. ID3 shifts the macrophage inhibitory/activating receptor balance to promote the phagocytic and lymphoid response, at least in part by buffering the binding of the transcription factors ELK1 and E2A at the SIRPA locus. Furthermore, loss- and gain-of-function experiments demonstrate that ID3 is sufficient to confer this potent anti-tumour activity to mouse bone-marrow-derived macrophages and human induced pluripotent stem-cell-derived macrophages. Expression of ID3 is therefore necessary and sufficient to endow macrophages with the ability to form an efficient anti-tumour niche, which could be harnessed for cell therapy in cancer.
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Affiliation(s)
- Zihou Deng
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Pierre-Louis Loyher
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Tomi Lazarov
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Weill Cornell Graduate School of Medical Sciences, New York, NY, USA
| | - Li Li
- Graduate Center, City University of New York, New York, NY, USA
| | - Zeyang Shen
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Bhavneet Bhinder
- Department of Physiology and Biophysics, Institute for Computational Biomedicine, Weill Cornell, New York, NY, USA
| | - Hairu Yang
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yi Zhong
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Araitz Alberdi
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Joan Massague
- Cancer Biology and Genetics Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Joseph C Sun
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Robert Benezra
- Cancer Biology and Genetics Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Christopher K Glass
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
| | - Olivier Elemento
- Department of Physiology and Biophysics, Institute for Computational Biomedicine, Weill Cornell, New York, NY, USA
| | | | - Frederic Geissmann
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
- Weill Cornell Graduate School of Medical Sciences, New York, NY, USA.
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3
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Vicario R, Fragkogianni S, Weber L, Lazarov T, Hu Y, Hayashi SY, Craddock BP, Socci ND, Alberdi A, Baako A, Ay O, Ogishi M, Lopez-Rodrigo E, Kappagantula R, Viale A, Iacobuzio-Donahue CA, Zhou T, Ransohoff RM, Chesworth R, Bank NB, Abdel-Wahab O, Boisson B, Elemento O, Casanova JL, Miller WT, Geissmann F. A microglia clonal inflammatory disorder in Alzheimer's Disease. bioRxiv 2024:2024.01.25.577216. [PMID: 38328106 PMCID: PMC10849735 DOI: 10.1101/2024.01.25.577216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Somatic genetic heterogeneity resulting from post-zygotic DNA mutations is widespread in human tissues and can cause diseases, however few studies have investigated its role in neurodegenerative processes such as Alzheimer's Disease (AD). Here we report the selective enrichment of microglia clones carrying pathogenic variants, that are not present in neuronal, glia/stromal cells, or blood, from patients with AD in comparison to age-matched controls. Notably, microglia-specific AD-associated variants preferentially target the MAPK pathway, including recurrent CBL ring-domain mutations. These variants activate ERK and drive a microglia transcriptional program characterized by a strong neuro-inflammatory response, both in vitro and in patients. Although the natural history of AD-associated microglial clones is difficult to establish in human, microglial expression of a MAPK pathway activating variant was previously shown to cause neurodegeneration in mice, suggesting that AD-associated neuroinflammatory microglial clones may contribute to the neurodegenerative process in patients.
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Affiliation(s)
- Rocio Vicario
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Stamatina Fragkogianni
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Leslie Weber
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Tomi Lazarov
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Yang Hu
- Department of Physiology and Biophysics, Institute for Compxutational Biomedicine,Weill Cornell New York, NY 10021, USA
| | - Samantha Y. Hayashi
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, 11794-8661
| | - Barbara P. Craddock
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, 11794-8661
| | - Nicholas D. Socci
- Marie-Josée & Henry R. Kravis Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Araitz Alberdi
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Ann Baako
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Oyku Ay
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Masato Ogishi
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, 10065 NY, USA
| | - Estibaliz Lopez-Rodrigo
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Rajya Kappagantula
- Human Oncology & Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Agnes Viale
- Marie-Josée & Henry R. Kravis Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Christine A. Iacobuzio-Donahue
- Human Oncology & Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Ting Zhou
- SKI Stem Cell Research Core, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | | | | | | | - Omar Abdel-Wahab
- Human Oncology & Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Bertrand Boisson
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, 10065 NY, USA
| | - Olivier Elemento
- Department of Physiology and Biophysics, Institute for Compxutational Biomedicine,Weill Cornell New York, NY 10021, USA
| | - Jean-Laurent Casanova
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, 10065 NY, USA
| | - W. Todd Miller
- Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY, 11794-8661
| | - Frederic Geissmann
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
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4
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Correa BL, El Harane N, Perotto M, Desgres M, Pidial L, Bellamy V, Tence N, Baron E, Autret G, Guillas C, Kamaleswaran K, Vilar J, Alberdi A, Renault N, Gnecchi M, Silvestre J, Menasché P. How do Extracellular Vesicles Protect the Ischemic Myocardium? Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.04.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Mattila S, Pérez-Torres M, Efstathiou A, Mimica P, Fraser M, Kankare E, Alberdi A, Aloy MÁ, Heikkilä T, Jonker PG, Lundqvist P, Martí-Vidal I, Meikle WPS, Romero-Cañizales C, Smartt SJ, Tsygankov S, Varenius E, Alonso-Herrero A, Bondi M, Fransson C, Herrero-Illana R, Kangas T, Kotak R, Ramírez-Olivencia N, Väisänen P, Beswick RJ, Clements DL, Greimel R, Harmanen J, Kotilainen J, Nandra K, Reynolds T, Ryder S, Walton NA, Wiik K, Östlin G. A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger. Science 2018; 361:482-485. [PMID: 29903886 DOI: 10.1126/science.aao4669] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 06/01/2018] [Indexed: 11/02/2022]
Abstract
Tidal disruption events (TDEs) are transient flares produced when a star is ripped apart by the gravitational field of a supermassive black hole (SMBH). We have observed a transient source in the western nucleus of the merging galaxy pair Arp 299 that radiated >1.5 × 1052 erg at infrared and radio wavelengths but was not luminous at optical or x-ray wavelengths. We interpret this as a TDE with much of its emission reradiated at infrared wavelengths by dust. Efficient reprocessing by dense gas and dust may explain the difference between theoretical predictions and observed luminosities of TDEs. The radio observations resolve an expanding and decelerating jet, probing the jet formation and evolution around a SMBH.
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Affiliation(s)
- S Mattila
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland. .,Finnish Centre for Astronomy with ESO (FINCA), FI-20014 University of Turku, Finland
| | - M Pérez-Torres
- Instituto de Astrofísica de Andalucía-Consejo Superior de Investigaciones Científicas (CSIC), P.O. Box 3004, 18008, Granada, Spain. .,Departamento de Física Teórica, Facultad de Ciencias, Universidad de Zaragoza, 50019, Zaragoza, Spain
| | - A Efstathiou
- School of Sciences, European University Cyprus, Diogenes Street, Engomi, 1516 Nicosia, Cyprus
| | - P Mimica
- Departament d'Astronomia i Astrofisica, Universitat de València Estudi General, 46100 Burjassot, València, Spain
| | - M Fraser
- School of Physics, O'Brien Centre for Science North, University College Dublin, Belfield, Dublin 4, Ireland.,Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
| | - E Kankare
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
| | - A Alberdi
- Instituto de Astrofísica de Andalucía-Consejo Superior de Investigaciones Científicas (CSIC), P.O. Box 3004, 18008, Granada, Spain
| | - M Á Aloy
- Departament d'Astronomia i Astrofisica, Universitat de València Estudi General, 46100 Burjassot, València, Spain
| | - T Heikkilä
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - P G Jonker
- SRON, Netherlands Institute for Space Research, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands.,Department of Astrophysics/Institute for Mathematics, Astrophysics and Particle Physics, Radboud University, P.O. Box 9010, 6500GL Nijmegen, Netherlands
| | - P Lundqvist
- Department of Astronomy and The Oskar Klein Centre, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
| | - I Martí-Vidal
- Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden
| | - W P S Meikle
- Astrophysics Group, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
| | - C Romero-Cañizales
- Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China.,Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejército 441, 8370191 Santiago, Chile
| | - S J Smartt
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
| | - S Tsygankov
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - E Varenius
- Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden.,Jodrell Bank Centre for Astrophysics, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - A Alonso-Herrero
- Centro de Astrobiología (CSIC-INTA), ESAC Campus, E-28692 Villanueva de la Cañada, Madrid, Spain
| | - M Bondi
- Istituto di Radioastronomia - Istituto Nazionale di Astrofisica (INAF), Bologna, via P. Gobetti 101, 40129, Bologna, Italy
| | - C Fransson
- Department of Astronomy and The Oskar Klein Centre, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
| | - R Herrero-Illana
- European Southern Observatory, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
| | - T Kangas
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland.,Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
| | - R Kotak
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland.,Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
| | - N Ramírez-Olivencia
- Instituto de Astrofísica de Andalucía-Consejo Superior de Investigaciones Científicas (CSIC), P.O. Box 3004, 18008, Granada, Spain
| | - P Väisänen
- South African Astronomical Observatory, P.O. Box 9, Observatory 7935, Cape Town, South Africa.,Southern African Large Telescope, P.O. Box 9, Observatory 7935, Cape Town, South Africa
| | - R J Beswick
- Jodrell Bank Centre for Astrophysics, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - D L Clements
- Astrophysics Group, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
| | - R Greimel
- Institute of Physics, Department for Geophysics, Astrophysics, and Meteorology, NAWI Graz, Universitätsplatz 5, 8010 Graz, Austria
| | - J Harmanen
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - J Kotilainen
- Finnish Centre for Astronomy with ESO (FINCA), FI-20014 University of Turku, Finland.,Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - K Nandra
- Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße, 85748, Garching, Germany
| | - T Reynolds
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - S Ryder
- Australian Astronomical Observatory, 105 Delhi Rd, North Ryde, NSW 2113, Australia
| | - N A Walton
- Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
| | - K Wiik
- Tuorla Observatory, Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - G Östlin
- Department of Astronomy and The Oskar Klein Centre, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
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6
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Nibourel O, Guihard S, Roumier C, Pottier N, Terre C, Paquet A, Peyrouze P, Geffroy S, Quentin S, Alberdi A, Abdelali RB, Renneville A, Demay C, Celli-Lebras K, Barbry P, Quesnel B, Castaigne S, Dombret H, Soulier J, Preudhomme C, Cheok MH. Copy-number analysis identified new prognostic marker in acute myeloid leukemia. Leukemia 2016; 31:555-564. [PMID: 27686867 DOI: 10.1038/leu.2016.265] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 08/18/2016] [Accepted: 08/24/2016] [Indexed: 01/08/2023]
Abstract
Recent advances in genomic technologies have revolutionized acute myeloid leukemia (AML) understanding by identifying potential novel actionable genomic alterations. Consequently, current risk stratification at diagnosis not only relies on cytogenetics, but also on the inclusion of several of these abnormalities. Despite this progress, AML remains a heterogeneous and complex malignancy with variable response to current therapy. Although copy-number alterations (CNAs) are accepted prognostic markers in cancers, large-scale genomic studies aiming at identifying specific prognostic CNA-based markers in AML are still lacking. Using 367 AML, we identified four recurrent CNA on chromosomes 11 and 21 that predicted outcome even after adjusting for standard prognostic risk factors and potentially delineated two new subclasses of AML with poor prognosis. ERG amplification, the most frequent CNA, was related to cytarabine resistance, a cornerstone drug of AML therapy. These findings were further validated in The Cancer Genome Atlas data. Our results demonstrate that specific CNA are of independent prognostic relevance, and provide new molecular information into the genomic basis of AML and cytarabine response. Finally, these CNA identified two potential novel risk groups of AML, which when confirmed prospectively, may improve the clinical risk stratification and potentially the AML outcome.
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Affiliation(s)
- O Nibourel
- CHU Lille University Hospital, Department of Hematology, Lille, France
| | - S Guihard
- INSERM UMR-S1172, Institute for Cancer Research of Lille, Factors of Leukemia Cell Persistance, Lille Cedex, France
| | - C Roumier
- CHU Lille University Hospital, Department of Hematology, Lille, France
| | - N Pottier
- CHU Lille University Hospital, Department of Biochemistry and Molecular Biology, Lille, France
| | - C Terre
- Hospital of Versailles, Department of Hematology, Chesnay, France
| | - A Paquet
- University Côte d'Azur, CNRS Institute of Molecular and Cellular Pharmacology, Sophia-Antipolis, Nice, France
| | - P Peyrouze
- INSERM UMR-S1172, Institute for Cancer Research of Lille, Factors of Leukemia Cell Persistance, Lille Cedex, France
| | - S Geffroy
- CHU Lille University Hospital, Department of Hematology, Lille, France
| | - S Quentin
- University Paris Diderot, INSERM U944 Saint-Louis Hospital, Department of Hematology, Paris, France
| | - A Alberdi
- University Paris Diderot, INSERM U944 Saint-Louis Hospital, Department of Hematology, Paris, France
| | - R B Abdelali
- University Paris Diderot, INSERM U944 Saint-Louis Hospital, Department of Hematology, Paris, France
| | - A Renneville
- CHU Lille University Hospital, Department of Hematology, Lille, France
| | - C Demay
- CHU Lille University Hospital, Department of Hematology, Lille, France
| | - K Celli-Lebras
- University Paris 7, Department of Hematology, Paris, France
| | - P Barbry
- University Côte d'Azur, CNRS Institute of Molecular and Cellular Pharmacology, Sophia-Antipolis, Nice, France
| | - B Quesnel
- INSERM UMR-S1172, Institute for Cancer Research of Lille, Factors of Leukemia Cell Persistance, Lille Cedex, France
| | - S Castaigne
- Hospital of Versailles, Department of Hematology, Chesnay, France
| | - H Dombret
- University Paris 7, Department of Hematology, Paris, France
| | - J Soulier
- University Paris Diderot, INSERM U944 Saint-Louis Hospital, Department of Hematology, Paris, France
| | - C Preudhomme
- CHU Lille University Hospital, Department of Hematology, Lille, France
| | - M H Cheok
- INSERM UMR-S1172, Institute for Cancer Research of Lille, Factors of Leukemia Cell Persistance, Lille Cedex, France
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7
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Hervella M, Svensson EM, Alberdi A, Günther T, Izagirre N, Munters AR, Alonso S, Ioana M, Ridiche F, Soficaru A, Jakobsson M, Netea MG, de-la-Rua C. The mitogenome of a 35,000-year-old Homo sapiens from Europe supports a Palaeolithic back-migration to Africa. Sci Rep 2016; 6:25501. [PMID: 27195518 PMCID: PMC4872530 DOI: 10.1038/srep25501] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 04/19/2016] [Indexed: 01/23/2023] Open
Abstract
After the dispersal of modern humans (Homo sapiens) Out of Africa, hominins with a similar morphology to that of present-day humans initiated the gradual demographic expansion into Eurasia. The mitogenome (33-fold coverage) of the Peştera Muierii 1 individual (PM1) from Romania (35 ky cal BP) we present in this article corresponds fully to Homo sapiens, whilst exhibiting a mosaic of morphological features related to both modern humans and Neandertals. We have identified the PM1 mitogenome as a basal haplogroup U6*, not previously found in any ancient or present-day humans. The derived U6 haplotypes are predominantly found in present-day North-Western African populations. Concomitantly, those found in Europe have been attributed to recent gene-flow from North Africa. The presence of the basal haplogroup U6* in South East Europe (Romania) at 35 ky BP confirms a Eurasian origin of the U6 mitochondrial lineage. Consequently, we propose that the PM1 lineage is an offshoot to South East Europe that can be traced to the Early Upper Paleolithic back migration from Western Asia to North Africa, during which the U6 lineage diversified, until the emergence of the present-day U6 African lineages.
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Affiliation(s)
- M Hervella
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n. 48940 Leioa, Bizkaia, Spain
| | - E M Svensson
- Department of Organismal Biology, Uppsala University, 75236 Uppsala, Sweden
| | - A Alberdi
- Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen, Denmark
| | - T Günther
- Department of Organismal Biology, Uppsala University, 75236 Uppsala, Sweden
| | - N Izagirre
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n. 48940 Leioa, Bizkaia, Spain
| | - A R Munters
- Department of Organismal Biology, Uppsala University, 75236 Uppsala, Sweden
| | - S Alonso
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n. 48940 Leioa, Bizkaia, Spain
| | - M Ioana
- Human Genomics Laboratory, University of Medicine and Pharmacy of Craiova, Bvd. 1 Mai no 66, Romania.,Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - F Ridiche
- Museum of Oltenia, History and Archaeology Department, Madona Dudu str. no. 14, Craiova, Romania
| | - A Soficaru
- "Fr. J. Rainer" Institute of Anthropology, Romanian Academy, Eroii Sanitari 8, P. O. Box 35-13, Romania
| | - M Jakobsson
- Department of Organismal Biology, Uppsala University, 75236 Uppsala, Sweden.,Science for Life laboratory, Uppsala University, 75123 Uppsala, Sweden
| | - M G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - C de-la-Rua
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n. 48940 Leioa, Bizkaia, Spain
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8
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Villarroel A, Bernardo-Seisdedos G, Alaimo A, Gomis-Perez C, Alberdi A, Malo C, Areso P, Millet O. Structural Insights of the Calcium Mediated Reorganization of the Calmodulin/Kv7.2 Channel Complex. Biophys J 2016. [DOI: 10.1016/j.bpj.2015.11.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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9
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Alberdi A, Gomis-Perez C, Bernardo-Seisdedos G, Alaimo A, Malo C, Aldaregia J, Lopez-Robles C, Areso P, Butz E, Wahl-Schott C, Villarroel A. Uncoupling PIP2-calmodulin regulation of Kv7.2 channels by an assembly destabilizing epileptogenic mutation. J Cell Sci 2015; 128:4014-23. [PMID: 26359296 DOI: 10.1242/jcs.176420] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/09/2015] [Indexed: 01/15/2023] Open
Abstract
We show that the combination of an intracellular bi-partite calmodulin (CaM)-binding site and a distant assembly region affect how an ion channel is regulated by a membrane lipid. Our data reveal that regulation by phosphatidylinositol(4,5)bisphosphate (PIP2) and stabilization of assembled Kv7.2 subunits by intracellular coiled-coil regions far from the membrane are coupled molecular processes. Live-cell fluorescence energy transfer measurements and direct binding studies indicate that remote coiled-coil formation creates conditions for different CaM interaction modes, each conferring different PIP2 dependency to Kv7.2 channels. Disruption of coiled-coil formation by epilepsy-causing mutation decreases apparent CaM-binding affinity and interrupts CaM influence on PIP2 sensitivity.
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Affiliation(s)
- Araitz Alberdi
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Carolina Gomis-Perez
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Ganeko Bernardo-Seisdedos
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Alessandro Alaimo
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Covadonga Malo
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Juncal Aldaregia
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Carlos Lopez-Robles
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Pilar Areso
- Departament de Farmacología, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Elisabeth Butz
- Department of Pharmacy, Center for Drug Research and Center for Integrated Protein Science Munich (CIPSM), Ludwig-Maximilians-Universität, München 81377, Germany
| | - Christian Wahl-Schott
- Department of Pharmacy, Center for Drug Research and Center for Integrated Protein Science Munich (CIPSM), Ludwig-Maximilians-Universität, München 81377, Germany
| | - Alvaro Villarroel
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Barrio Sarriena s/n, Leioa 48940, Spain
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10
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Gomis-Perez C, Alaimo A, Fernandez-Orth J, Alberdi A, Aivar-Mateo P, Bernardo-Seisdedos G, Malo C, Areso P, Felipe A, Villarroel A. An unconventional calmodulin-anchoring site within the AB module of Kv7.2 channels. J Cell Sci 2015; 128:3155-63. [PMID: 26148514 DOI: 10.1242/jcs.174128] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 06/23/2015] [Indexed: 11/20/2022] Open
Abstract
Calmodulin (CaM) binding to the AB module is crucial for multiple mechanisms governing the function of Kv7.2 (also known as KCNQ2) K(+) channel subunits, which mediate one of the main components of the non-inactivating K(+) M-current, a key controller of neuronal excitability. Structural analysis indicates that the CaM N-lobe engages with helix B, whereas the C-lobe anchors to the IQ site within helix A. Here, we report the identification of a new site between helices A and B that assists in CaM binding whose sequence is reminiscent of the TW helix within the CaM C-lobe anchoring site of SK2 K(+) channels (also known as KCNN2). Mutations that disrupt CaM binding within the TW site, helix B or helix A yield functional channels, whereas no function is observed when the TW site and helix A, or the TW site and helix B are mutated simultaneously. Our data indicate that the TW site is dispensable for function, contributes to the stabilization of the CaM-Kv7.2 complex and becomes essential when docking to either helix A or when helix B is perturbed.
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Affiliation(s)
- Carolina Gomis-Perez
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Alessandro Alaimo
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Juncal Fernandez-Orth
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Araitz Alberdi
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Paloma Aivar-Mateo
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Ganeko Bernardo-Seisdedos
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Covadonga Malo
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Pilar Areso
- Dept. Farmacología, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
| | - Antonio Felipe
- Molecular Physiology Laboratory, Departament de Bioquímica i Biologia Molecular, Institut de Biomedicina (IBUB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Alvaro Villarroel
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa 48940, Spain
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11
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Gomis-Perez C, Soldovieri MV, Alberdi A, Ambrosino P, Di Maria M, Alaimo A, Bernardo-Seisdedos G, Malo C, Areso P, Taglialatela M, Villarroel A. PIP2 and Surface Expression Underlie Apo-Calmodulin Dependent Kv7.2/KCNQ2 Current Potentiation. Biophys J 2015. [DOI: 10.1016/j.bpj.2014.11.1910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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12
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Alaimo A, Alberdi A, Gomis-Perez C, Fernández-Orth J, Bernardo-Seisdedos G, Malo C, Millet O, Areso P, Villarroel A. Pivoting between calmodulin lobes triggered by calcium in the Kv7.2/calmodulin complex. PLoS One 2014; 9:e86711. [PMID: 24489773 PMCID: PMC3904923 DOI: 10.1371/journal.pone.0086711] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 12/12/2013] [Indexed: 11/25/2022] Open
Abstract
Kv7.2 (KCNQ2) is the principal molecular component of the slow voltage gated M-channel, which strongly influences neuronal excitability. Calmodulin (CaM) binds to two intracellular C-terminal segments of Kv7.2 channels, helices A and B, and it is required for exit from the endoplasmic reticulum. However, the molecular mechanisms by which CaM controls channel trafficking are currently unknown. Here we used two complementary approaches to explore the molecular events underlying the association between CaM and Kv7.2 and their regulation by Ca2+. First, we performed a fluorometric assay using dansylated calmodulin (D-CaM) to characterize the interaction of its individual lobes to the Kv7.2 CaM binding site (Q2AB). Second, we explored the association of Q2AB with CaM by NMR spectroscopy, using 15N-labeled CaM as a reporter. The combined data highlight the interdependency of the N- and C-lobes of CaM in the interaction with Q2AB, suggesting that when CaM binds Ca2+ the binding interface pivots between the N-lobe whose interactions are dominated by helix B and the C-lobe where the predominant interaction is with helix A. In addition, Ca2+ makes CaM binding to Q2AB more difficult and, reciprocally, the channel weakens the association of CaM with Ca2+.
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Affiliation(s)
- Alessandro Alaimo
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Leioa, Spain
| | - Araitz Alberdi
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Leioa, Spain
| | | | | | | | - Covadonga Malo
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Leioa, Spain
| | - Oscar Millet
- Structural Biology Unit, CICbioGUNE, Bizkaia Technology Park, Derio, Spain
| | - Pilar Areso
- Departamento de Farmacología, UPV/EHU, Universidad del País Vasco, Leioa, Spain
| | - Alvaro Villarroel
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Leioa, Spain
- * E-mail:
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13
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Gomis-Perez C, Soldovieri V, Alberdi A, Ambrosino P, Alaimo A, Bernardo-Seisdedos G, Areso P, Taglialatela M, Villarroel A. Calcium-Independent Potentation of Kv7.2 Current Density by Calmodulin. Biophys J 2014. [DOI: 10.1016/j.bpj.2013.11.822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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14
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Alberdi A, Martí-Vidal I, Marcaide J, Guirado J, Pérez-Torres M, Ros E, Brunthaler A. The jet of the Low Luminosity AGN of M81. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20136108002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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16
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Alaimo A, Alberdi A, Gomis-Perez C, Fernández-Orth J, Gómez-Posada JC, Areso P, Villarroel A. Cooperativity between calmodulin-binding sites in Kv7.2 channels. J Cell Sci 2012. [PMID: 23203804 DOI: 10.1242/jcs.114082] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Among the multiple roles assigned to calmodulin (CaM), controlling the surface expression of Kv7.2 channels by binding to two discontinuous sites is a unique property of this Ca(2+) binding protein. Mutations that interfere with CaM binding or the sequestering of CaM prevent this M-channel component from exiting the endoplasmic reticulum (ER), which reduces M-current density in hippocampal neurons, enhancing excitability and offering a rational mechanism to explain some forms of benign familial neonatal convulsions (BFNC). Previously, we identified a mutation (S511D) that impedes CaM binding while allowing the channel to exit the ER, hinting that CaM binding may not be strictly required for Kv7.2 channel trafficking to the plasma membrane. Alternatively, this interaction with CaM might escape detection and, indeed, we now show that the S511D mutant contains functional CaM-binding sites that are not detected by classical biochemical techniques. Surface expression and function is rescued by CaM, suggesting that free CaM in HEK293 cells is limiting and reinforcing the hypothesis that CaM binding is required for ER exit. Within the CaM-binding domain formed by two sites (helix A and helix B), we show that CaM binds to helix B with higher apparent affinity than helix A, both in the presence and absence of Ca(2+), and that the two sites cooperate. Hence, CaM can bridge two binding domains, anchoring helix A of one subunit to helix B of another subunit, in this way influencing the function of Kv7.2 channels.
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Affiliation(s)
- Alessandro Alaimo
- Unidad de Biofísica, CSIC-UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Spain
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17
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Aivar P, Fernández-Orth J, Gomis-Perez C, Alberdi A, Alaimo A, Rodríguez MS, Giraldez T, Miranda P, Areso P, Villarroel A. Surface expression and subunit specific control of steady protein levels by the Kv7.2 helix A-B linker. PLoS One 2012; 7:e47263. [PMID: 23115641 PMCID: PMC3480381 DOI: 10.1371/journal.pone.0047263] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 09/11/2012] [Indexed: 02/02/2023] Open
Abstract
Kv7.2 and Kv7.3 are the main components of the neuronal voltage-dependent M-current, which is a subthreshold potassium conductance that exerts an important control on neuronal excitability. Despite their predominantly intracellular distribution, these channels must reach the plasma membrane in order to control neuronal activity. Thus, we analyzed the amino acid sequence of Kv7.2 to identify intrinsic signals that may control its surface expression. Removal of the interlinker connecting helix A and helix B of the intracellular C-terminus produces a large increase in the number of functional channels at the plasma membrane. Moreover, elimination of this linker increased the steady-state amount of protein, which was not associated with a decrease of protein degradation. The magnitude of this increase was inversely correlated with the number of helix A – helix B linkers present in the tetrameric channel assemblies. In contrast to the remarkable effect on the amount of Kv7.2 protein, removal of the Kv7.2 linker had no detectable impact on the steady-state levels of Kv7.3 protein.
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Affiliation(s)
- Paloma Aivar
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa, Spain
| | - Juncal Fernández-Orth
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa, Spain
| | - Carolina Gomis-Perez
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa, Spain
| | - Araitz Alberdi
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa, Spain
| | - Alessandro Alaimo
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa, Spain
| | - Manuel S. Rodríguez
- Proteomics Unit, CIC bioGUNE CIBERehd, Technology Park of Bizkaia, Building, Derio, Spain
| | - Teresa Giraldez
- Unidad de Investigación, Hospital Universitario Ntra Sra Candelaria, Santa Cruz de Tenerife, Spain
| | - Pablo Miranda
- Unidad de Investigación, Hospital Universitario Ntra Sra Candelaria, Santa Cruz de Tenerife, Spain
| | - Pilar Areso
- Dept. Farmacología, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa, Spain
| | - Alvaro Villarroel
- Unidad de Biofísica, CSIC, UPV/EHU, Universidad del País Vasco, Barrio Sarriena s/n, Leioa, Spain
- * E-mail:
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18
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Gómez-Posada JC, Aivar P, Alberdi A, Alaimo A, Etxeberría A, Fernández-Orth J, Zamalloa T, Roura-Ferrer M, Villace P, Areso P, Casis O, Villarroel A. Kv7 channels can function without constitutive calmodulin tethering. PLoS One 2011; 6:e25508. [PMID: 21980481 PMCID: PMC3182250 DOI: 10.1371/journal.pone.0025508] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 09/05/2011] [Indexed: 11/19/2022] Open
Abstract
M-channels are voltage-gated potassium channels composed of Kv7.2-7.5 subunits that serve as important regulators of neuronal excitability. Calmodulin binding is required for Kv7 channel function and mutations in Kv7.2 that disrupt calmodulin binding cause Benign Familial Neonatal Convulsions (BFNC), a dominantly inherited human epilepsy. On the basis that Kv7.2 mutants deficient in calmodulin binding are not functional, calmodulin has been defined as an auxiliary subunit of Kv7 channels. However, we have identified a presumably phosphomimetic mutation S511D that permits calmodulin-independent function. Thus, our data reveal that constitutive tethering of calmodulin is not required for Kv7 channel function.
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Affiliation(s)
- Juan Camilo Gómez-Posada
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Paloma Aivar
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Araitz Alberdi
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Alessandro Alaimo
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Ainhoa Etxeberría
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Juncal Fernández-Orth
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Teresa Zamalloa
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Meritxell Roura-Ferrer
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Patricia Villace
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
| | - Pilar Areso
- Dept. Farmacología, Universidad del País Vasco, Leioa, Spain
| | - Oscar Casis
- Dept. Fisiología, Universidad del País Vasco, Leioa, Spain
| | - Alvaro Villarroel
- Unidad de Biofísica, Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibersitatea, Leioa, Spain
- * E-mail:
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19
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Villarroel A, Gomez-Posada JC, Aivar P, Alaimo A, Etxeberria A, Fernandez-Orth J, Areso P, Alberdi A. Calmodulin Independent Trafficking of Kv7.2 Channels. Biophys J 2011. [DOI: 10.1016/j.bpj.2010.12.2434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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20
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Virely C, Moulin S, Cobaleda C, Lasgi C, Alberdi A, Soulier J, Sigaux F, Chan S, Kastner P, Ghysdael J. Haploinsufficiency of the IKZF1 (IKAROS) tumor suppressor gene cooperates with BCR-ABL in a transgenic model of acute lymphoblastic leukemia. Leukemia 2010; 24:1200-4. [DOI: 10.1038/leu.2010.63] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Alberdi A, Sartor T, Sosa MA. Binding of AP-2 adaptor complex to brain membrane is regulated by phosphorylation of proteins. Biochem Biophys Res Commun 2005; 330:695-700. [PMID: 15809053 DOI: 10.1016/j.bbrc.2005.03.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2005] [Indexed: 11/18/2022]
Abstract
Phosphorylation of proteins appears as a key process in early steps of clathrin coated vesicle formation. Here, we report that treatment of post-nuclear fraction with alkaline phosphatase induced redistribution of alpha subunits of AP-2 adaptor complex to cytosol and this effect was higher in the alpha2 subunit. A high serine phosphorylation status of alpha subunits correlated with the higher affinity of AP-2 to membranes. Using a simple binding assay, where membranes were incubated with either purified adaptors or cytosols, we observed an inhibitory effect of tyrphostin, a tyrosine kinase inhibitor, on the binding of AP-2 to membranes, but also an unexpected decrease induced by the phosphatase inhibitor cyclosporine. We also show an inhibitory effect of ATP mediated by cytosolic proteins, although it could not be related to the phosphorylation of AP-2, suggesting an action upstream a cascade of phosphorylations that participate in the regulation of the assembly of AP-2 to membranes.
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Affiliation(s)
- A Alberdi
- Instituto de Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza (5500), Argentina.
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Alberdi A, Jimenez-Ortiz V, Sosa MA. The calcium chelator BAPTA affects the binding of assembly protein AP-2 to membranes. BIOCELL 2001; 25:167-72. [PMID: 11590892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Clathrin coated vesicles are involved in receptor-mediated transport. The coat of these vesicles is constituted mostly of clathrin and the assembly proteins AP-1 or AP-2. In the present study using an in vitro binding system, we found that the interaction of AP-2 but not AP-1 with membranes diminished when the calcium chelating agent BAPTA was added. The maximal inhibitory effect was observed with 10 mM of the chelating agent. Binding of AP-2 to membranes was recovered by adding calcium in a concentration-dependent fashion. Binding was also affected when the membranes were previously treated with BAPTA and then washed. However, other chelating agents such as EDTA or EGTA, as well as the zinc chelating TPEN, did not have any effect on the binding. From these results we postulate a role for calcium in regulating the assembly-disassembly cycle of adaptors in the formation of clathrin coated vesicles.
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Affiliation(s)
- A Alberdi
- Instituto de Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina
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Larrea E, Alberdi A, Castelruiz Y, Boya P, Civeira MP, Prieto J. Expression of interferon-alpha subtypes in peripheral mononuclear cells from patients with chronic hepatitis C: a role for interferon-alpha5. J Viral Hepat 2001; 8:103-10. [PMID: 11264730 DOI: 10.1046/j.1365-2893.2001.00273.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Interferon (IFN)-alpha is a family of antiviral proteins encoded by different genes. The biological significance of the existence of various IFN-alpha subtypes is not clear. We have investigated the interferon system in chronic hepatitis C virus (HCV) infection, a disease that responds to interferon-alpha2 therapy in only a limited proportion of cases. We analysed the expression of interferon regulatory factor (IRF)-1, IRF-2, and IFN-alpha subtypes in nonstimulated and Sendai virus-stimulated peripheral blood mononuclear cells (PBMC) from HCV infected patients and healthy controls. We observed that the IRF-1 mRNA and IRF-1/IRF-2 ratios were increased in PBMC from hepatitis C patients with respect to normal subjects. Sendai virus stimulation of PBMC led to a significant increase in the levels of IRF-1, IRF-2 and IFN-alpha mRNAs and in the production of IFN-alpha protein with respect to basal values in healthy controls as well as in patients with HCV infection. In addition, we found that while natural HCV infection induced increased IFN-alpha5 expression in PBMC, in vitro infection of these cells with Sendai virus caused a raise in the expression of IFN-alpha8 in both patients and normal controls. In summary, our results indicate that virus-induced activation of the IFN system in human PBMC is associated with selective expression of individual IFN-alpha subtypes, IFN-alpha5 being the specific subtype induced in PBMC from patients with chronic HCV infection.
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Affiliation(s)
- E Larrea
- Department of Medicine and Liver Unit, Clínica Universitaria, University of Navarra, 31008 Pamplona, Spain
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Abstract
A 16-month sequence of radio images of the active galaxy 3C120 with the Very Long Baseline Array reveals a region in the relativistic jet where superluminal components flash on and off over time scales of months, while the polarization angle rotates. This can be explained by interaction between the jet and an interstellar cloud located about 8 parsecs from the center of the galaxy. The cloud, which rotates the polarization direction and possibly eclipses a section of the jet, represents a "missing link" between the ultradense broad-emission-line clouds closer to the center and the lower density narrow-emission-line clouds seen on kiloparsec scales.
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Affiliation(s)
- JL Gomez
- Instituto de Astrofisica de Andalucia (CSIC), Apartado 3004, Granada 18080, Spain. Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USA. Astronomical Institute, St. Petersburg State U
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Marcaide JM, Alberdi A, Ros E, Diamond P, Shapiro II, Guirado JC, Jones DL, Krichbaum TP, Mantovani F, Preston RA, Rius A, Schilizzi RT, Trigilio C, Whitney AR, Witzel A. Expansion of SN 1993J. Science 1995. [DOI: 10.1126/science.270.5241.1475] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- J. M. Marcaide
- J. M. Marcaide and E. Ros, Departamento de Astronomía, Universitat de València, E-46100 Burjassot, València, Spain
| | - A. Alberdi
- A. Alberdi, Laboratorio de Astrofísica Espacial y Física Fundamental, Instituto Nacional de Técnica Aeroespacial (INTA), E-28080 Madrid, Spain, and Instituto de Astrofísica de Andalucía-Consejo Superior de Investigaciones Cientificas (CSIC), Apdo. Correos 3004, E-18080 Granada, Spain
| | - E. Ros
- J. M. Marcaide and E. Ros, Departamento de Astronomía, Universitat de València, E-46100 Burjassot, València, Spain
| | - P. Diamond
- P. Diamond, National Radio Astronomy Observatory, Socorro, NM 87801, USA
| | - I. I. Shapiro
- I. I. Shapiro, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
| | - J. C. Guirado
- J. C. Guirado, D. L. Jones, R. A. Preston, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - D. L. Jones
- J. C. Guirado, D. L. Jones, R. A. Preston, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - T. P. Krichbaum
- T. P. Krichbaum and A. Witzel, Max-Planck Institut für Radioastronomie, Auf dem Hügel 69, D-50131 Bonn, Germany
| | - F. Mantovani
- F. Mantovani, Istituto di Radioastronomia, Consiglio Nazionale delle Ricerche (CNR), I-Bologna 40129, Italy
| | - R. A. Preston
- J. C. Guirado, D. L. Jones, R. A. Preston, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - A. Rius
- A. Rius, Laboratorio de Astrofísica Espacial y Física Fundamental, INTA, E-28080 Madrid, Spain, and Centre d'Estudis Avançats-C.S.I.C., Camí de Santa Barbara s/n, E-17300 Blanes, Girona, Spain
| | - R. T. Schilizzi
- R. T. Schilizzi, Joint Institute for VLBI in Europe, Postbus 2, 7990 AA Dwingeloo, Netherlands, and Leiden Observatory, Postbus 9513, 2300 RA Leiden, Netherlands
| | - C. Trigilio
- C. Trigilio, Istituto di Radioastronomia, CNR, Noto, Italy
| | - A. R. Whitney
- A. R. Whitney, Massachusetts Institute of Technology-Haystack Observatory, Westford, MA 01886, USA
| | - A. Witzel
- T. P. Krichbaum and A. Witzel, Max-Planck Institut für Radioastronomie, Auf dem Hügel 69, D-50131 Bonn, Germany
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Torres P, Ruíz E, Rebolledo C, Mira A, Cubillos V, Navarrete N, Gesche W, Montefusco A, Valdés L, Alberdi A. [Parasitism in fishes and human riverside communities of the Huillinco and Natri lakes (Great Island of Chiloé), Chile]. Bol Chil Parasitol 1990; 45:47-55. [PMID: 2152358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In April and December 1989, 35 fish from Lake Huillinco (42 degrees 48'S, 74 degrees 02'W) and 36 fish from Lake Natri (42 degrees 48'S, 73 degrees 50'W), in the Great Island of Chiloé (Chile) were examined. Coprological samples from 159 persons, 17 dogs, 19 pigs and 4 cats from around both lakes were examined for Diphyllobothrium spp. infection. In the Lake Huillinco the following helminths of fishes were determined: Contracaecum sp. and Hysterothylacium sp. in Salmo trutta, Cauque mauleanum and Eleginops maclovinus; Dichelyne (Cucullanellus) dichelyneformis in S. trutta and E. maclovinus and Scolex pleuronectis in S. trutta. One specimen of Mugil cephalus did not show helminth parasites. Prevalence of infection were greater for Contracaecum sp. in S. trutta (75.0%) and C. mauleanum (76.0%); and Hysterothylacium sp. in E. maclovinus (75.0%). Mean intensity was higher for D. (C.) dichelyneformis in E. maclovinus. Contracaecum sp. in S. trutta, Oncorhynchus mykiss, Oncorhynchus kisutch and Galaxias maculatus; Acanthocephalus sp. in S. trutta and G. maculatus, S. pleuronectis in O. mykiss and Cystidicoloides sp. in G. maculatus were determined at Lake Natri. Prevalence and intensity of infection were higher for Contracaecum sp. in S. trutta and O. kisutch. Infection by Diphyllobothrium sp. was determined in one domestic cat. Prevalence of infection by intestinal protozoan and helminths in human population only showed significative differences for Ascaris lumbricoides and Trichuris trichiura that were higher in the Lake Huillinco. Importance of natural infection by helminth parasites for fish in cultured condition and possible mechanisms of infections in relation to the diet of fishes are discussed.
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Affiliation(s)
- P Torres
- Instituto de Parasitología, Universidad Austral de Chile, Valdivia
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Ulloa J, Cubillos V, Montecinos MI, Alberdi A. [Aspergillosis in wild geese (Chloëphaga poliocephala scl., 1857) in Chile]. Zentralbl Veterinarmed B 1987; 34:30-5. [PMID: 3296570 DOI: 10.1111/j.1439-0450.1987.tb00367.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Yañez Polo MA, Beneytez F, Soriguer Escofet FC, Pachón Diaz J, Villar Ortíz J, Alberdi A, Sánchez Guijo P, de la Lama J, Causse Prado M, Muñoz González J, Melero Bellido M, Milán Martín JA, Ortíz Leyba C, Pousibert Sanfeliú H, Rodríguez Martin ME, Pérez Cobos G, Manso Gómez F. [Clinico-radiological characteristics in a hydrofluorosis population (90 cases)]. Rev Clin Esp 1975; 139:229-34. [PMID: 1197846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Villar Ortíz J, Yáñez Polo MA, Pachón Díaz J, Sánchez Guijo P, De La Lama J, Alberdi A, Causse Prado M, Muñóz González J, Soriguer FC, Melero Bellido M, Ortiz Leyba C, Beneitez F, Pérez Cobos G, Pousibet Sanfeliu H, Rodríguez Martín M, Manso García F. [The existence of fluorosis regions in Las Hurdes Altas]. Rev Clin Esp 1975; 138:143-8. [PMID: 1178959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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