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Iribarren PA, Di Marzio LA, Berazategui MA, Saura A, Coria L, Cassataro J, Rojas F, Navarro M, Alvarez VE. Depolymerization of SUMO chains induces slender to stumpy differentiation in T. brucei bloodstream parasites. PLoS Pathog 2024; 20:e1012166. [PMID: 38635823 PMCID: PMC11060531 DOI: 10.1371/journal.ppat.1012166] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/30/2024] [Accepted: 04/01/2024] [Indexed: 04/20/2024] Open
Abstract
Trypanosoma brucei are protozoan parasites that cause sleeping sickness in humans and nagana in cattle. Inside the mammalian host, a quorum sensing-like mechanism coordinates its differentiation from a slender replicative form into a quiescent stumpy form, limiting growth and activating metabolic pathways that are beneficial to the parasite in the insect host. The post-translational modification of proteins with the Small Ubiquitin-like MOdifier (SUMO) enables dynamic regulation of cellular metabolism. SUMO can be conjugated to its targets as a monomer but can also form oligomeric chains. Here, we have investigated the role of SUMO chains in T. brucei by abolishing the ability of SUMO to polymerize. We have found that parasites able to conjugate only SUMO monomers are primed for differentiation. This was demonstrated for monomorphic lines that are normally unable to produce stumpy forms in response to quorum sensing signaling in mice, and also for pleomorphic cell lines in which stumpy cells were observed at unusually low parasitemia levels. SUMO chain mutants showed a stumpy compatible transcriptional profile and better competence to differentiate into procyclics. Our study indicates that SUMO depolymerization may represent a coordinated signal triggered during stumpy activation program.
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Affiliation(s)
- Paula Ana Iribarren
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo Ugalde”–IIBIO (UNSAM-CONICET), San Martin, Buenos Aires, Argentina
| | - Lucía Ayelén Di Marzio
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo Ugalde”–IIBIO (UNSAM-CONICET), San Martin, Buenos Aires, Argentina
| | - María Agustina Berazategui
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo Ugalde”–IIBIO (UNSAM-CONICET), San Martin, Buenos Aires, Argentina
| | - Andreu Saura
- Instituto de Parasitología y Biomedicina “López-Neyra”, CSIC (IPBLN-CSIC), Granada, Spain
| | - Lorena Coria
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo Ugalde”–IIBIO (UNSAM-CONICET), San Martin, Buenos Aires, Argentina
| | - Juliana Cassataro
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo Ugalde”–IIBIO (UNSAM-CONICET), San Martin, Buenos Aires, Argentina
| | - Federico Rojas
- Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina “López-Neyra”, CSIC (IPBLN-CSIC), Granada, Spain
| | - Vanina Eder Alvarez
- Instituto de Investigaciones Biotecnológicas “Dr. Rodolfo Ugalde”–IIBIO (UNSAM-CONICET), San Martin, Buenos Aires, Argentina
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2
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García-Rivera C, Navarro M, Parra M, Sánchez Bautista A, Gómez I, Ventero MP, Rodríguez JC. [In vitro activity of delafloxacin against clinical isolates of carbapenem-resistant Pseudomonas aeruginosa in a stage prior to the clinical use of this drug]. Rev Esp Quimioter 2024; 37:104-105. [PMID: 38140799 PMCID: PMC10874670 DOI: 10.37201/req/080.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 10/25/2023] [Accepted: 11/03/2023] [Indexed: 12/24/2023]
Affiliation(s)
| | | | | | | | | | - M P Ventero
- María-Paz Ventero, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Av. Pintor Baeza 12, 03010. Alicante, Spain.
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3
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Ferrins L, Buskes MJ, Kapteyn MM, Engels HN, Enos SE, Lu C, Klug DM, Singh B, Quotadamo A, Bachovchin K, Tear WF, Spaulding AE, Forbes KC, Bag S, Rivers M, LeBlanc C, Burchfield E, Armand JR, Diaz-Gonzalez R, Ceballos-Perez G, García-Hernández R, Pérez-Moreno G, Bosch-Navarrete C, Gómez-Liñán C, Ruiz-Pérez LM, Gamarro F, González-Pacanowska D, Navarro M, Mensa-Wilmot K, Pollastri MP, Kyle DE, Rice CA. Corrigendum: Identification of novel anti-amoebic pharmacophores from kinase inhibitor chemotypes. Front Microbiol 2023; 14:1304196. [PMID: 37954236 PMCID: PMC10634589 DOI: 10.3389/fmicb.2023.1304196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 10/02/2023] [Indexed: 11/14/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fmicb.2023.1149145.].
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Affiliation(s)
- Lori Ferrins
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Melissa J. Buskes
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Madison M. Kapteyn
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
| | - Hannah N. Engels
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
| | - Suzanne E. Enos
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, United States
| | - Chenyang Lu
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
| | - Dana M. Klug
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Baljinder Singh
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Antonio Quotadamo
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
- Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Kelly Bachovchin
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Westley F. Tear
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Andrew E. Spaulding
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Katherine C. Forbes
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Seema Bag
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Mitch Rivers
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Catherine LeBlanc
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Erin Burchfield
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Jeremy R. Armand
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Rosario Diaz-Gonzalez
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Gloria Ceballos-Perez
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Guiomar Pérez-Moreno
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Cristina Bosch-Navarrete
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Claudia Gómez-Liñán
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Luis Miguel Ruiz-Pérez
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Dolores González-Pacanowska
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Kojo Mensa-Wilmot
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA, United States
| | - Michael P. Pollastri
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Dennis E. Kyle
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
| | - Christopher A. Rice
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, United States
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
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Bosch-Navarrete C, Pérez-Moreno G, Annang F, Diaz-Gonzalez R, García-Hernández R, Rocha H, Gamarro F, Cordón-Obras C, Navarro M, Rodriguez A, Genilloud O, Reyes F, Vicente F, Ruiz-Pérez LM, González-Pacanowska D. Strasseriolides display in vitro and in vivo activity against trypanosomal parasites and cause morphological and size defects in Trypanosoma cruzi. PLoS Negl Trop Dis 2023; 17:e0011592. [PMID: 37713416 PMCID: PMC10529594 DOI: 10.1371/journal.pntd.0011592] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 09/27/2023] [Accepted: 08/14/2023] [Indexed: 09/17/2023] Open
Abstract
Neglected diseases caused by kinetoplastid parasites are a health burden in tropical and subtropical countries. The need to create safe and effective medicines to improve treatment remains a priority. Microbial natural products are a source of chemical diversity that provides a valuable approach for identifying new drug candidates. We recently reported the discovery and bioassay-guided isolation of a novel family of macrolides with antiplasmodial activity. The novel family of four potent antimalarial macrolides, strasseriolides A-D, was isolated from cultures of Strasseria geniculata CF-247251, a fungal strain obtained from plant tissues. In the present study, we analyze these strasseriolides for activity against kinetoplastid protozoan parasites, namely, Trypanosoma brucei brucei, Leishmania donovani and Trypanosoma cruzi. Compounds exhibited mostly low activities against T. b. brucei, yet notable growth inhibition and selectivity were observed for strasseriolides C and D in the clinically relevant intracellular T. cruzi and L. donovani amastigotes with EC50 values in the low micromolar range. Compound C is fast-acting and active against both intracellular and trypomastigote forms of T. cruzi. While cell cycle defects were not identified, prominent morphological changes were visualized by differential interference contrast microscopy and smaller and rounded parasites were visualized upon exposure to strasseriolide C. Moreover, compound C lowers parasitaemia in vivo in acute models of infection of Chagas disease. Hence, strasseriolide C is a novel natural product active against different forms of T. cruzi in vitro and in vivo. The study provides an avenue for blocking infection of new cells, a strategy that could additionally contribute to avoid treatment failure.
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Affiliation(s)
- Cristina Bosch-Navarrete
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Guiomar Pérez-Moreno
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Frederick Annang
- Fundación MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Rosario Diaz-Gonzalez
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Hedy Rocha
- Department of Microbiology, Core Anti-infectives, New York University School of Medicine, New York, New York, United States of America
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Carlos Cordón-Obras
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Ana Rodriguez
- Department of Microbiology, Core Anti-infectives, New York University School of Medicine, New York, New York, United States of America
| | - Olga Genilloud
- Fundación MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Fernando Reyes
- Fundación MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Francisca Vicente
- Fundación MEDINA, Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Luis M. Ruiz-Pérez
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
| | - Dolores González-Pacanowska
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Científicas (CSIC), Parque Tecnológico Ciencias de la Salud, Granada, Spain
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5
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Ferrins L, Buskes MJ, Kapteyn MM, Engels HN, Enos SE, Lu C, Klug DM, Singh B, Quotadamo A, Bachovchin K, Tear WF, Spaulding AE, Forbes KC, Bag S, Rivers M, LeBlanc C, Burchfield E, Armand JR, Diaz-Gonzalez R, Ceballos-Perez G, García-Hernández R, Pérez-Moreno G, Bosch-Navarrete C, Gómez-Liñán C, Ruiz-Pérez LM, Gamarro F, González-Pacanowska D, Navarro M, Mensa-Wilmot K, Pollastri MP, Kyle DE, Rice CA. Identification of novel anti-amoebic pharmacophores from kinase inhibitor chemotypes. Front Microbiol 2023; 14:1149145. [PMID: 37234530 PMCID: PMC10206040 DOI: 10.3389/fmicb.2023.1149145] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 03/29/2023] [Indexed: 05/28/2023] Open
Abstract
Acanthamoeba species, Naegleria fowleri, and Balamuthia mandrillaris are opportunistic pathogens that cause a range of brain, skin, eye, and disseminated diseases in humans and animals. These pathogenic free-living amoebae (pFLA) are commonly misdiagnosed and have sub-optimal treatment regimens which contribute to the extremely high mortality rates (>90%) when they infect the central nervous system. To address the unmet medical need for effective therapeutics, we screened kinase inhibitor chemotypes against three pFLA using phenotypic drug assays involving CellTiter-Glo 2.0. Herein, we report the activity of the compounds against the trophozoite stage of each of the three amoebae, ranging from nanomolar to low micromolar potency. The most potent compounds that were identified from this screening effort were: 2d (A. castellanii EC50: 0.92 ± 0.3 μM; and N. fowleri EC50: 0.43 ± 0.13 μM), 1c and 2b (N. fowleri EC50s: <0.63 μM, and 0.3 ± 0.21 μM), and 4b and 7b (B. mandrillaris EC50s: 1.0 ± 0.12 μM, and 1.4 ± 0.17 μM, respectively). With several of these pharmacophores already possessing blood-brain barrier (BBB) permeability properties, or are predicted to penetrate the BBB, these hits present novel starting points for optimization as future treatments for pFLA-caused diseases.
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Affiliation(s)
- Lori Ferrins
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Melissa J. Buskes
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Madison M. Kapteyn
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
| | - Hannah N. Engels
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
| | - Suzanne E. Enos
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, United States
| | - Chenyang Lu
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
| | - Dana M. Klug
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Baljinder Singh
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Antonio Quotadamo
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
- Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Kelly Bachovchin
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Westley F. Tear
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Andrew E. Spaulding
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Katherine C. Forbes
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Seema Bag
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Mitch Rivers
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Catherine LeBlanc
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Erin Burchfield
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Jeremy R. Armand
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Rosario Diaz-Gonzalez
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Gloria Ceballos-Perez
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Guiomar Pérez-Moreno
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Cristina Bosch-Navarrete
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Claudia Gómez-Liñán
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Luis Miguel Ruiz-Pérez
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Dolores González-Pacanowska
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina “López-Neyra” Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - Kojo Mensa-Wilmot
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA, United States
| | - Michael P. Pollastri
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, United States
| | - Dennis E. Kyle
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
| | - Christopher A. Rice
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, United States
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
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Goszczynski DE, Navarro M, Mutto AA, Ross PJ. Review: Embryonic stem cells as tools for in vitro gamete production in livestock. Animal 2023; 17 Suppl 1:100828. [PMID: 37567652 DOI: 10.1016/j.animal.2023.100828] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 04/13/2023] [Accepted: 04/20/2023] [Indexed: 08/13/2023] Open
Abstract
The goal of in vitro gametogenesis is to reproduce the events of sperm and oocyte development in the laboratory. Significant advances have been made in the mouse in the last decade, but evolutionary divergence from the murine developmental program has prevented the replication of these advances in large mammals. In recent years, intensive work has been done in humans, non-human primates and livestock to elucidate species-specific differences that regulate germ cell development, due to the number of potential applications. One of the most promising applications is the use of in vitro gametes to optimize the spread of elite genetics in cattle. In this context, embryonic stem cells have been posed as excellent candidates for germ cell platforms. Here, we present the most relevant advances in in vitro gametogenesis of interest to livestock science, including new types of pluripotent stem cells with potential for germline derivation, characterization of the signaling environment in the gonadal niche, and experimental systems used to reproduce different stages of germ cell development in the laboratory.
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Affiliation(s)
- D E Goszczynski
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo Ugalde"- UNSAM-CONICET, Buenos Aires CP 1650, Argentina
| | - M Navarro
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo Ugalde"- UNSAM-CONICET, Buenos Aires CP 1650, Argentina
| | - A A Mutto
- Instituto de Investigaciones Biotecnológicas "Dr. Rodolfo Ugalde"- UNSAM-CONICET, Buenos Aires CP 1650, Argentina
| | - P J Ross
- Department of Animal Science, University of California Davis, Davis, CA, USA; STgenetics, Navasota, TX, USA.
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7
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Mitchell JD, Drymon JM, Vardon J, Coulson PG, Simpfendorfer CA, Scyphers SB, Kajiura SM, Hoel K, Williams S, Ryan KL, Barnett A, Heupel MR, Chin A, Navarro M, Langlois T, Ajemian MJ, Gilman E, Prasky E, Jackson G. Shark depredation: future directions in research and management. Rev Fish Biol Fish 2023; 33:475-499. [PMID: 36404946 PMCID: PMC9664043 DOI: 10.1007/s11160-022-09732-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 09/28/2022] [Indexed: 05/19/2023]
Abstract
Shark depredation is a complex social-ecological issue that affects a range of fisheries worldwide. Increasing concern about the impacts of shark depredation, and how it intersects with the broader context of fisheries management, has driven recent research in this area, especially in Australia and the United States. This review synthesises these recent advances and provides strategic guidance for researchers aiming to characterise the occurrence of depredation, identify the shark species responsible, and test deterrent and management approaches to reduce its impacts. Specifically, the review covers the application of social science approaches, as well as advances in video camera and genetic methods for identifying depredating species. The practicalities and considerations for testing magnetic, electrical, and acoustic deterrent devices are discussed in light of recent research. Key concepts for the management of shark depredation are reviewed, with recommendations made to guide future research and policy development. Specific management responses to address shark depredation are lacking, and this review emphasizes that a "silver bullet" approach for mitigating depredation does not yet exist. Rather, future efforts to manage shark depredation must rely on a diverse range of integrated approaches involving those in the fishery (fishers, scientists and fishery managers), social scientists, educators, and other stakeholders.
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Affiliation(s)
- J. D. Mitchell
- Queensland Government, Department of Agriculture and Fisheries, Ecosciences Precinct, 41 Boggo Road, Dutton Park, QLD 4102 Australia
| | - J. M. Drymon
- Mississippi State University, Coastal Research and Extension Center, 1815 Popps Ferry Road, Biloxi, MS 39532 USA
- Mississippi-Alabama Sea Grant Consortium, 703 East Beach Drive, Ocean Springs, MS 39564 USA
| | - J. Vardon
- Southern Cross University, Lismore, NSW Australia
| | - P. G. Coulson
- Department of Primary Industries and Regional Development, Western Australian Fisheries and Marine Research Laboratories, 39 Northside Drive, Hillarys, WA 6025 Australia
| | - C. A. Simpfendorfer
- Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Battery Point, TAS 7004 Australia
| | - S. B. Scyphers
- Coastal Sustainability Institute, Department of Marine and Environmental Sciences, Northeastern University, Nahant, MA 01908 USA
- Social Science Environmental Health Research Institute, Northeastern University, Boston, MA 02115 USA
| | - S. M. Kajiura
- Department of Biological Sciences, Florida Atlantic University, 777 Glades Road, Boca Raton, FL 33431 USA
| | - K. Hoel
- Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Bldg 34 James Cook Drive, Douglas, QLD 4811 Australia
| | - S. Williams
- Queensland Government, Department of Agriculture and Fisheries, Ecosciences Precinct, 41 Boggo Road, Dutton Park, QLD 4102 Australia
- School of Biological Sciences, The University of Queensland, St Lucia, Qld 4072 Australia
| | - K. L. Ryan
- Department of Primary Industries and Regional Development, Western Australian Fisheries and Marine Research Laboratories, 39 Northside Drive, Hillarys, WA 6025 Australia
| | - A. Barnett
- Biopixel Oceans Foundation, Cairns, QLD Australia
- Marine Data Technology Hub, James Cook University, Townsville, QLD 4811 Australia
| | - M. R. Heupel
- Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Battery Point, TAS 7004 Australia
| | - A. Chin
- Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Bldg 34 James Cook Drive, Douglas, QLD 4811 Australia
| | - M. Navarro
- School of Biological Sciences, The University of Western Australia, Crawley, WA Australia
- The Oceans Institute, University of Western Australia, Crawley, WA Australia
| | - T. Langlois
- School of Biological Sciences, The University of Western Australia, Crawley, WA Australia
- The Oceans Institute, University of Western Australia, Crawley, WA Australia
| | - M. J. Ajemian
- Harbor Branch Oceanographic Institute, Florida Atlantic University, 5600 US 1 North, Fort Pierce, FL 34946 USA
| | - E. Gilman
- Pelagic Ecosystems Research Group, Honolulu, HI USA
- Heriot-Watt University, Edinburgh, UK
| | - E. Prasky
- Coastal Sustainability Institute, Department of Marine and Environmental Sciences, Northeastern University, Nahant, MA 01908 USA
- Social Science Environmental Health Research Institute, Northeastern University, Boston, MA 02115 USA
| | - G. Jackson
- Department of Primary Industries and Regional Development, Western Australian Fisheries and Marine Research Laboratories, 39 Northside Drive, Hillarys, WA 6025 Australia
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Laiz-Quiroga L, Navarro M, Martínez-León E, Buffone M, Mutto A, Osycka-Salut C. 146 Improvement in hyperactivation, capacitation, and heterologous zona pellucida binding of cryopreserved equine spermatozoa after brief exposure to ionophore A23187. Reprod Fertil Dev 2022. [DOI: 10.1071/rdv35n2ab146] [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: 12/11/2022] Open
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9
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Cisternas J, Navarro M, Duarte S, Concha A. Equilibrium and symmetries of altitudinal magnetic rotors on a circle. Chaos 2022; 32:123120. [PMID: 36587347 DOI: 10.1063/5.0119916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Macroscopic magnets can easily be manipulated and positioned so that interactions between themselves and with external fields induce interesting dynamics and equilibrium configurations. In this work, we use rotating magnets positioned in a line or at the vertices of a regular polygon. The rotation planes of the magnets can be modified at will. The rich structure of stable and unstable configurations is dictated by symmetry and the side of the polygon. We show that both symmetric solutions and their symmetry-breaking bifurcations can be explained with group theory. Our results suggest that the predicted magnetic textures should emerge at any length scale as long as the interaction is polar, and the system is endowed with the same symmetries.
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Affiliation(s)
- J Cisternas
- Facultad de Ingeniería y Ciencias Aplicadas, Universidad de los Andes, Monseñor Alvaro del Portillo, 12455 Santiago, Chile
| | - M Navarro
- Condensed Matter i-Lab, Universidad Adolfo Ibáñez, Diagonal las Torres 2640, Building D, Peñalolén, Santiago, Chile
| | - S Duarte
- Design Engineering Center, Universidad Adolfo Ibáñez, Diagonal las Torres 2640, Building D, Peñalolén, Santiago, Chile
| | - A Concha
- Condensed Matter i-Lab, Universidad Adolfo Ibáñez, Diagonal las Torres 2640, Building D, Peñalolén, Santiago, Chile
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10
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Navarro M, Halstead MM, Rincon G, Mutto AA, Ross PJ. bESC from cloned embryos do not retain transcriptomic or epigenetic memory from somatic donor cells. Reproduction 2022; 164:243-257. [PMID: 35951478 DOI: 10.1530/rep-22-0063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 08/11/2022] [Indexed: 11/08/2022]
Abstract
In brief Epigenetic reprogramming after mammalian somatic cell nuclear transfer is often incomplete, resulting in low efficiency of cloning. However, gene expression and histone modification analysis indicated high similarities in transcriptome and epigenomes of bovine embryonic stem cells from in vitro fertilized and somatic cell nuclear transfer embryos. Abstract Embryonic stem cells (ESC) indefinitely maintain the pluripotent state of the blastocyst epiblast. Stem cells are invaluable for studying development and lineage commitment, and in livestock, they constitute a useful tool for genomic improvement and in vitro breeding programs. Although these cells have been recently derived from bovine blastocysts, a detailed characterization of their molecular state is lacking. Here, we apply cutting-edge technologies to analyze the transcriptomic and epigenomic landscape of bovine ESC (bESC) obtained from in vitro fertilized (IVF) and somatic cell nuclear transfer (SCNT) embryos. bESC were efficiently derived from SCNT and IVF embryos and expressed pluripotency markers while retaining genome stability. Transcriptome analysis revealed that only 46 genes were differentially expressed between IVF- and SCNT-derived bESC, which did not reflect significant deviation in cellular function. Interrogating histone 3 lysine 4 trimethylation, histone 3 lysine 9 trimethylation, and histone 3 lysine 27 trimethylation with cleavage under targets and tagmentation, we found that the epigenomes of both bESC groups were virtually indistinguishable. Minor epigenetic differences were randomly distributed throughout the genome and were not associated with differentially expressed or developmentally important genes. Finally, the categorization of genomic regions according to their combined histone mark signal demonstrated that all bESC shared the same epigenomic signatures, especially at gene promoters. Overall, we conclude that bESC derived from SCNT and IVF embryos are transcriptomically and epigenetically analogous, allowing for the production of an unlimited source of pluripotent cells from high genetic merit organisms without resorting to transgene-based techniques.
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Affiliation(s)
- M Navarro
- Instituto de Investigaciones Biotecnológicas 'Dr Rodolfo Ugalde', UNSAM-CONICET, Buenos Aires, Argentina.,Department of Animal Science, University of California, Davis, California, USA
| | - M M Halstead
- Department of Animal Science, University of California, Davis, California, USA
| | | | - A A Mutto
- Instituto de Investigaciones Biotecnológicas 'Dr Rodolfo Ugalde', UNSAM-CONICET, Buenos Aires, Argentina
| | - P J Ross
- Department of Animal Science, University of California, Davis, California, USA
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11
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Vallejo Casas JA, Sambo M, López López C, Durán-Poveda M, Rodríguez-Villanueva García J, Santos RJ, Llanos M, Navarro-González E, Aller J, Pubul V, Guadalix S, Crespo G, González C, Zafón C, Navarro M, Santamaría-Sandi J, Segura Á, Gajate P, Gómez-Balaguer M, Valdivia J, Puig-Domingo M, Galofré JC, Castelo B, Villanueva MJ, Argüelles I, Orcajo-Rincón L. Initial clinical and treatment patterns of advanced differentiated thyroid cancer: ERUDIT study. Eur Thyroid J 2022; 11:e210111. [PMID: 35900793 PMCID: PMC9422238 DOI: 10.1530/etj-21-0111] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 06/30/2022] [Indexed: 11/18/2022] Open
Abstract
Background Up to 30% of differentiated thyroid cancer (DTC) will develop advanced-stage disease (aDTC) with reduced overall survival (OS). Objective The aim of this study is to characterize initial diagnosis of aDTC, its therapeutic management, and prognosis in Spain and Portugal. Methods A multicentre, longitudinal, retrospective study of adult patients diagnosed with aDTC in the Iberian Peninsula was conducted between January 2007 and December 2012. Analyses of baseline characteristics and results of initial treatments, relapse- or progression-free survival ((RP)FS) from first DTC diagnosis, OS, and prognostic factors impacting the evolution of advanced disease were evaluated. Results Two hundred and thirteen patients (median age: 63 years; 57% female) were eligible from 23 hospitals. Advanced disease presented at first diagnosis (de novo aDTC) included 54% of patients, while 46% had relapsed from early disease (recurrent/progressive eDTC). At initial stage, most patients received surgery (98%) and/or radioiodine (RAI) (89%), with no differences seen between median OS (95% CI) (10.4 (7.3-15.3) years) and median disease-specific-survival (95% CI) (11.1 (8.7-16.2) years; log-rank test P = 0.4737). Age at diagnosis being <55 years was associated with a lower risk of death (Wald chi-square (Wc-s) P < 0.0001), while a poor response to RAI to a higher risk of death ((Wc-s) P < 0.05). In the eDTC cohort, median (RP)FS (95% CI) was of 1.7 (1.0-2.0) years after RAI, with R0/R1 surgeries being the only common significant favourable factor for longer (RP)FS and time to aDTC ((Wc-s) P < 0.05). Conclusion Identification of early treatment-dependent prognostic factors for an unfavourable course of advanced disease is possible. An intensified therapeutic attitude may reverse this trend and should be considered in poor-performing patients. Prospective studies are required to confirm these findings.
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Affiliation(s)
- Juan Antonio Vallejo Casas
- Department of Nuclear Medicine (UGC), Maimónides Institute of Biomedical Research of Córdoba (IMIBIC), Reina Sofía University Hospital, University of Córdoba, Córdoba, Spain
| | - Marcel Sambo
- Department of Endocrinology, Gregorio Marañón University Hospital, Madrid, Spain
| | - Carlos López López
- Department of Medical Oncology, Marqués de Valdecilla University Hospital, IDIVAL, Santander, Spain
| | - Manuel Durán-Poveda
- Department of General and Digestive Surgery, Rey Juan Carlos University Hospital, Madrid, Spain
| | | | - Rita Joana Santos
- Department of Endocrinology, Francisco Gentil Portuguese Institute of Oncology of Lisbon, Lisbon, Portugal
| | - Marta Llanos
- Department of Medical Oncology, Hospital Universitario de Canarias, La Laguna, Santa Cruz de Tenerife, Spain
| | | | - Javier Aller
- Department of Endocrinology, Puerta de Hierro-Majadahonda University Hospital, Madrid, Spain
| | - Virginia Pubul
- Department of Nuclear Medicine, University Hospital and Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
| | - Sonsoles Guadalix
- Department of Endocrinology and Nutrition, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Guillermo Crespo
- Department of Medical Oncology, Burgos University Hospital, Burgos, Spain
| | - Cintia González
- Department of Endocrinology, Santa Creu i Sant Pau University Hospital, CIBER-BBN, Barcelona, Spain
| | - Carles Zafón
- Department of Endocrinology and Nutrition, Vall Hebron University Hospital and Autonomous University of Barcelona (UAB), Barcelona, Spain
| | - Miguel Navarro
- Department of Medical Oncology, University Hospital of Salamanca, Salamanca, Spain
| | | | - Ángel Segura
- Medical Oncology Unit, La Fe University Hospital, Valencia, Spain
| | - Pablo Gajate
- Department of Medical Oncology, Ramon y Cajal University Hospital, Madrid, Spain
| | | | - Javier Valdivia
- Department of Oncology, University Hospital Centre Virgen de las Nieves, Granada, Spain
| | - Manel Puig-Domingo
- Endocrine and Nutrition Service, Health Sciences Research Institute and University Hospital Germans Trias i Pujol, Badalona, Spain
| | - Juan Carlos Galofré
- Department of Endocrinology, Clínica Universidad de Navarra, University of Navarra, Lisbon, Spain
| | - Beatriz Castelo
- Department of Medical Oncology, La Paz University Hospital, Madrid, Spain
| | - María José Villanueva
- Department of Medical Oncology, Alvaro Cunqueiro University Hospital Complex, University of Vigo, Vigo, Spain
| | - Iñaki Argüelles
- Department of Endocrinology and Nutrition, Son Espases University Hospital, Palma de Mallorca, Spain
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12
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Leite L, Boticas I, Navarro M, Nobre L, Bessa J, Cunha F, Neves P, Fangueiro R. Halochromic Inks Applied on Cardboard for Food Spoilage Monitorization. Materials (Basel) 2022; 15:ma15186431. [PMID: 36143742 PMCID: PMC9502810 DOI: 10.3390/ma15186431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/07/2022] [Accepted: 09/12/2022] [Indexed: 05/14/2023]
Abstract
Control of food spoilage is a critical concern in the current world scenario, not only to ensure the quality and safety of food but also to avoid the generation of food waste. This paper evaluates a dual-sensor strategy using six different pH indicators stamped on cardboard for the detection of spoilage in three different foods: beef, salmon, and strawberries. After function validation and formulation optimizations in the laboratory, the halochromic sensors methyl orange and bromocresol purple 2% (w/v) were stamped on cardboard and, in contact with the previously mentioned foods, were able to produce an easily perceptible signal for spoilage by changing color. Additionally, when it comes to mechanical characterization the inks showed high abrasion (>100 cycles) and adhesion resistance (>91%).
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Affiliation(s)
- Liliana Leite
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal
- Fibrenamics-Institute of Innovation on Fiber-based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
| | - Inês Boticas
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal
- Fibrenamics-Institute of Innovation on Fiber-based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
| | - Miguel Navarro
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal
- Fibrenamics-Institute of Innovation on Fiber-based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
| | - Luís Nobre
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal
- Fibrenamics-Institute of Innovation on Fiber-based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
| | - João Bessa
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal
- Fibrenamics-Institute of Innovation on Fiber-based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
- Correspondence:
| | - Fernando Cunha
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal
- Fibrenamics-Institute of Innovation on Fiber-based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
| | - Pedro Neves
- José Neves & Cia., Lda., Parque Industrial de Ponte 1ª Fase, Lote F, nº 277, 4801-911 Guimaraes, Portugal
| | - Raúl Fangueiro
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal
- Fibrenamics-Institute of Innovation on Fiber-based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
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13
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Cordon-Obras C, Gomez-Liñan C, Torres-Rusillo S, Vidal-Cobo I, Lopez-Farfan D, Barroso-Del Jesus A, Rojas-Barros D, Carrington M, Navarro M. Identification of sequence-specific promoters driving polycistronic transcription initiation by RNA polymerase II in trypanosomes. Cell Rep 2022; 38:110221. [PMID: 35021094 DOI: 10.1016/j.celrep.2021.110221] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 03/12/2021] [Revised: 10/18/2021] [Accepted: 12/15/2021] [Indexed: 11/20/2022] Open
Abstract
Protein-coding genes in trypanosomes occur in polycistronic transcription units (PTUs). How RNA polymerase II (Pol II) initiates transcription of PTUs has not been resolved; the current model favors chromatin modifications inducing transcription rather than sequence-specific promoters. Here, we uncover core promoters by functional characterization of Pol II peaks identified by chromatin immunoprecipitation sequencing (ChIP-seq). Two distinct promoters are located between divergent PTUs, each driving unidirectional transcription. Detailed analysis identifies a 75-bp promoter that is necessary and sufficient to drive full reporter expression and contains functional motifs. Analysis of further promoters suggests transcription initiation is regulated and promoters are either focused or dispersed. In contrast to the previous model of unregulated and promoter-independent transcription initiation, we find that sequence-specific promoters determine the initiation of Pol II transcription of protein-coding genes PTUs. These findings in Trypanosoma brucei suggest that in addition of chromatin modifications, promoter motifs-based regulation of gene expression is deeply conserved among eukaryotes.
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Affiliation(s)
- Carlos Cordon-Obras
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain
| | - Claudia Gomez-Liñan
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain
| | - Sara Torres-Rusillo
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain
| | - Isabel Vidal-Cobo
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain
| | - Diana Lopez-Farfan
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain
| | - Alicia Barroso-Del Jesus
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain
| | - Domingo Rojas-Barros
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain
| | - Mark Carrington
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1QW, UK
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina López Neyra, Consejo Superior de Investigaciones Científicas, IPBLN-CSIC, 18016 Granada, Spain.
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Dutra F, Navarro M, Romero A, Briano C, Pereira M, Uzal FA. Spatial and seasonal analysis and geovisualization of Fasciola hepatica-free bovine bacillary hemoglobinuria outbreaks in eastern Uruguay, 1999-2019. Prev Vet Med 2021; 199:105553. [PMID: 34920245 DOI: 10.1016/j.prevetmed.2021.105553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 11/28/2021] [Accepted: 11/29/2021] [Indexed: 11/18/2022]
Abstract
Bovine bacillary hemoglobinuria (BBH) produced by Clostridium novyi type D, is an endemic, highly fatal disease of cattle in the temperate grassland region of eastern Uruguay. A previous study showed that in this region, BBH is not associated with Fasciola hepatica or any other known focal-ischemic liver injury, so the reasons for its high incidence remains undetermined. The objective of this study was to analyze data from 45 Fasciola hepatica-free BBH outbreaks (1999-2019) in order to find common animal, seasonal and/or geographical risk factors, which may explain the occurrence of the epizootics. Fisher's goodness-of-fit testing showed a significantly higher case proportion of adult cows (N = 368, 80.5%) and lower of calves (N =8, 1.8%), as compared to the expected proportions of the censused population in the study area and historical submissions computed from the laboratory database (Chi-Sq = 346.2 and 174.8, df = 7, P < 0.00). Time series decomposition showed a bi-seasonal pattern, with a larger peak in spring and early summer (October to January) and a smaller increase in autumn (March-May). The lowest seasonal indices were on mid-summer (February) and winter (June-September). A combination of spatial statistics was used to assess the different spatial features of the disease and consistency of the findings. Global spatial autocorrelation showed BBH was significantly clustered (Moran's I = 0.407, P < 0.001). Both smoothed Anselin's Local Indicator of Spatial Autocorrelation and Kulldorff's spatial scan Poisson and Bernoulli models, detected roughly the same high-risk areas in the southeastern part of the Merin Lagoon basin, with the most likely cluster centered in the large wetland biosphere reserve "Eastern Wetlands and Coastal Strip" (RR = 9.12, P < 0.001). Outbreaks were georeferenced (latitude, longitude) and thematic dot-mapping geovisualization in Google Earth™ showed that the results were robust and truly geographic in nature. Most outbreaks (40/45, 88.8%) occurred on wetlands areas and large river valleys, characterized by poorly drained and frequently flooded soils, indicating that moisture-laden soils are the natural habitat of C. novyi type D. Grasslands in these endemic areas support rapid fattening of cattle during spring-summer, and somewhat less in autumn, in almost exact correspondence with BBH peaks, suggesting a close causal association in high-risk areas. Risk is significantly higher in adult cows probably because the spore content in the liver is highest in this category. The altered lipid metabolism and lipotoxicity in the liver may be the precipitating factor for spore germination and epizootic occurrence.
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Affiliation(s)
- F Dutra
- Dirección de Laboratorios Veterinarios (DILAVE), Miguel C. Rubino, Laboratorio Regional Este, Avelino Miranda 2045, CP 33000, Treinta y Tres, Uruguay.
| | - M Navarro
- California Animal Health and Food Safety Laboratory, University of California-Davis, San Bernardino, CA, USA
| | - A Romero
- Dirección de Laboratorios Veterinarios (DILAVE), Miguel C. Rubino, Laboratorio Regional Este, Avelino Miranda 2045, CP 33000, Treinta y Tres, Uruguay
| | - C Briano
- Dirección de Laboratorios Veterinarios (DILAVE), Miguel C. Rubino, Laboratorio Regional Este, Avelino Miranda 2045, CP 33000, Treinta y Tres, Uruguay
| | - M Pereira
- Dirección de Laboratorios Veterinarios (DILAVE), Miguel C. Rubino, Laboratorio Regional Este, Avelino Miranda 2045, CP 33000, Treinta y Tres, Uruguay
| | - F A Uzal
- California Animal Health and Food Safety Laboratory, University of California-Davis, San Bernardino, CA, USA
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15
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Meier MJ, Nguyen KC, Crosthwait J, Kawata A, Rigden M, Leingartner K, Wong A, Holloway A, Shwed PS, Beaudette L, Navarro M, Wade M, Tayabali AF. Low dose antibiotic ingestion potentiates systemic and microbiome changes induced by silver nanoparticles. NanoImpact 2021; 23:100343. [PMID: 35559844 DOI: 10.1016/j.impact.2021.100343] [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: 04/20/2021] [Revised: 06/29/2021] [Accepted: 07/12/2021] [Indexed: 06/15/2023]
Abstract
Changes in the mammalian gut microbiome are linked to the impairment of immunological function and numerous other pathologies. Antimicrobial silver nanoparticles (AgNPs) are incorporated into numerous consumer products (e.g., clothing, cosmetics, food packaging), which may directly impact the gut microbiome through ingestion. The human health impact of chronic AgNP ingestion is still uncertain, but evidence from exposure to other antimicrobials provides a strong rationale to assess AgNP effects on organ function, immunity, metabolism, and gut-associated microbiota. To investigate this, mice were gavaged daily for 5 weeks with saline, AgNPs, antibiotics (ciprofloxacin and metronidazole), or AgNPs combined with antibiotics. Animals were weighed daily, assessed for glucose tolerance, organ function, tissue and blood cytokine and leukocyte levels. At the end of the study, we used 16S rDNA amplicon and whole-metagenome shotgun sequencing to assess changes in the gut microbiome. In mice exposed to both AgNPs and antibiotics, silver was found in the stomach, and small and large intestines, but negligible amounts were present in other organs examined. Mice exposed to AgNPs alone showed minimal tissue silver levels. Antibiotics, but not AgNPs, altered glucose metabolism. Mice given AgNPs and antibiotics together demonstrated slower weight gain, reduced peripheral lymphocytes, and elevated splenic, but not circulatory markers of inflammation. 16S rDNA profiling of cecum and feces and metagenomic sequencing of fecal DNA demonstrated that combined AgNP-antibiotic treatment also significantly altered the structure and function of the gut microbiota, including depletion of the indicator species Akkermansia muciniphila. This study provides evidence for possible biological effects from repeated ingestion of AgNP-containing consumer products when antibiotics are also being used and raises concern that an impaired gut microbiome (e.g., through antibiotic use) can potentiate the harm from chemical exposures such as AgNPs.
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Affiliation(s)
- Matthew J Meier
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada
| | - K C Nguyen
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada; New Substances Assessment and Control Bureau, Health Canada, Ottawa, Canada
| | - J Crosthwait
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada
| | - A Kawata
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada
| | - M Rigden
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada
| | - K Leingartner
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada
| | - A Wong
- Department of Biology, Carleton University, Ottawa, Canada
| | - A Holloway
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Canada
| | - P S Shwed
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Lee Beaudette
- Ecotoxicology and Wildlife Health Division, Environment and Climate Change Canada, Ottawa, Canada
| | - M Navarro
- Bureau of Chemical Safety, Health Canada, Ottawa, Canada
| | - M Wade
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada
| | - A F Tayabali
- Environmental Health, Science and Research Bureau, Health Canada, Ottawa, Canada.
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Klug DM, Mavrogiannaki EM, Forbes KC, Silva L, Diaz-Gonzalez R, Pérez-Moreno G, Ceballos-Pérez G, Garcia-Hernández R, Bosch-Navarrete C, Cordón-Obras C, Gómez-Liñán C, Saura A, Momper JD, Martinez-Martinez MS, Manzano P, Syed A, El-Sakkary N, Caffrey CR, Gamarro F, Ruiz-Perez LM, Gonzalez Pacanowska D, Ferrins L, Navarro M, Pollastri MP. Lead Optimization of 3,5-Disubstituted-7-Azaindoles for the Treatment of Human African Trypanosomiasis. J Med Chem 2021; 64:9404-9430. [PMID: 34156862 DOI: 10.1021/acs.jmedchem.1c00674] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Neglected tropical diseases such as human African trypanosomiasis (HAT) are prevalent primarily in tropical climates and among populations living in poverty. Historically, the lack of economic incentive to develop new treatments for these diseases has meant that existing therapeutics have serious shortcomings in terms of safety, efficacy, and administration, and better therapeutics are needed. We now report a series of 3,5-disubstituted-7-azaindoles identified as growth inhibitors of Trypanosoma brucei, the parasite that causes HAT, through a high-throughput screen. We describe the hit-to-lead optimization of this series and the development and preclinical investigation of 29d, a potent antitrypanosomal compound with promising pharmacokinetic (PK) parameters. This compound was ultimately not progressed beyond in vivo PK studies due to its inability to penetrate the blood-brain barrier (BBB), critical for stage 2 HAT treatments.
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Affiliation(s)
- Dana M Klug
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Eftychia M Mavrogiannaki
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Katherine C Forbes
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Lisseth Silva
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Rosario Diaz-Gonzalez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Guiomar Pérez-Moreno
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Gloria Ceballos-Pérez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Raquel Garcia-Hernández
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Cristina Bosch-Navarrete
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Carlos Cordón-Obras
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Claudia Gómez-Liñán
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Andreu Saura
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Jeremiah D Momper
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093, United States
| | - Maria Santos Martinez-Martinez
- Diseases of the Developing World (DDW), Tres Cantos Medicines Development Campus, GlaxoSmithKline, Tres Cantos 28760, Spain
| | - Pilar Manzano
- Diseases of the Developing World (DDW), Tres Cantos Medicines Development Campus, GlaxoSmithKline, Tres Cantos 28760, Spain
| | - Ali Syed
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093, United States
| | - Nelly El-Sakkary
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093, United States
| | - Conor R Caffrey
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093, United States
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Luis Miguel Ruiz-Perez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Dolores Gonzalez Pacanowska
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Lori Ferrins
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Michael P Pollastri
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
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17
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Van den Eynde E, Gasch O, Oliva JC, Prieto E, Calzado S, Gomila A, Machado ML, Falgueras L, Ortonobes S, Morón A, Capilla S, Navarro G, Oristrell J, Cervantes M, Navarro M. Corticosteroids and tocilizumab reduce in-hospital mortality in severe COVID-19 pneumonia: a retrospective study in a Spanish hospital. Infect Dis (Lond) 2021; 53:291-302. [PMID: 33620019 PMCID: PMC7919103 DOI: 10.1080/23744235.2021.1884286] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background There is an urgent need to reduce mortality of COVID-19. We examined if corticosteroids and tocilizumab reduce risk for death in patients with severe pneumonia caused by SARS-CoV-2. Methods A retrospective cohort study was performed in a single university hospital. All adult patients admitted with confirmed severe COVID-19 pneumonia from 9 March to 9 April 2020 were included. Severe pneumonia was defined as multi-lobar or bilateral pneumonia and a ratio of oxygen saturation by pulse oximetry to the fraction of inspired oxygen (SpFi)<315. All patients received antiviral and antibiotic treatment. From March 26, patients also received immunomodulatory treatment with corticosteroids (methylprednisolone 250 mg/day for 3 days), or tocilizumab or both. In-hospital mortality in the entire cohort and in a 1:1 matched cohort sub-analysis was evaluated. Results 255 patients were included, 118 received only antiviral and antibiotic treatment while 137, admitted after March 26, also received immunomodulators. In-hospital mortality of patients on immunomodulatory treatment was significantly lower than in those without [47/137(34.3%) vs. 69/118(58.5%), (p < .001)]. The risk of death was 0.44 (CI, 0.26–0.76) in patients receiving corticosteroids alone and 0.292 (CI, 0.18–0.47) in those treated with corticosteroids and tocilizumab. In the sub-analysis with 202 matched patients, the risk of death was 0.356 (CI 0.179–0.707) in patients receiving corticosteroids alone and 0.233 (0.124–0.436) in those treated with the combination. Conclusions Combined treatment with corticosteroids and tocilizumab reduced mortality with about 25% in patients with severe COVID-19 pneumonia. Corticosteroids alone also resulted in lower in-hospital mortality rate compared to patients receiving only antiviral and antibiotic treatment. Corticosteroids alone or combined with tocilizumab may be considered in patients with severe COVID-19 pneumonia.
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Affiliation(s)
- E Van den Eynde
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain
| | - O Gasch
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
| | - J C Oliva
- Statistical Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - E Prieto
- Intensive Care Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - S Calzado
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain
| | - A Gomila
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain
| | - M L Machado
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain
| | - L Falgueras
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
| | - S Ortonobes
- Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Pharmacy Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - A Morón
- Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Pharmacy Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - S Capilla
- Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Microbiology Department. Clinical laboratory, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - G Navarro
- Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Epidemiology Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - J Oristrell
- Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain.,Internal Medicine Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - M Cervantes
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M Navarro
- Infectious Diseases Department, Consorci Corporació Sanitària Parc Taulí, Sabadell, Spain.,Institut d'Investigació I Innovació Parc Taulí (I3PT), Sabadell, Spain.,Universitat Autònoma de Barcelona, Barcelona, Spain
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18
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Singh B, Diaz-Gonzalez R, Ceballos-Perez G, Rojas-Barros DI, Gunaganti N, Gillingwater K, Martinez-Martinez MS, Manzano P, Navarro M, Pollastri MP. Medicinal Chemistry Optimization of a Diaminopurine Chemotype: Toward a Lead for Trypanosoma brucei Inhibitors. J Med Chem 2020; 63:9912-9927. [PMID: 32786222 DOI: 10.1021/acs.jmedchem.0c01017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Human African trypanosomiasis (HAT), or sleeping sickness, is caused by the protozoan parasite Trypanosoma brucei and transmitted through the bite of infected tsetse flies. The disease is considered fatal if left untreated. To identify new chemotypes against Trypanosoma brucei, previously we identified 797 potent kinase-targeting inhibitors grouped into 59 clusters plus 53 singleton compounds with at least 100-fold selectivity over HepG2 cells. From this set of hits, a cluster of diaminopurine-derived compounds was identified. Herein, we report our medicinal chemistry investigation involving the exploration of structure-activity and structure-property relationships around one of the high-throughput screening (HTS) hits, N2-(thiophen-3-yl)-N6-(2,2,2-trifluoroethyl)-9H-purine-2,6-diamine (1, NEU-1106). This work led to the identification of a potent lead compound (4aa, NEU-4854) with improved in vitro absorption, distribution, metabolism, and excretion (ADME) properties, which was progressed into proof-of-concept translation of in vitro antiparasitic activity to in vivo efficacy.
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Affiliation(s)
- Baljinder Singh
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
| | - Rosario Diaz-Gonzalez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Gloria Ceballos-Perez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Domingo I Rojas-Barros
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Naresh Gunaganti
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
| | - Kirsten Gillingwater
- Parasite Chemotherapy Unit, Swiss Tropical and Public Health Institute, Socinstrasse 57, 4051 Basel, Switzerland.,University of Basel, Petersplatz 1, 4001 Basel, Switzerland
| | | | - Pilar Manzano
- Tres Cantos Medicines Development Campus, DDW, GlaxoSmithKline, Tres Cantos 28760, Spain
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Científicas (CSIC), Granada 18016, Spain
| | - Michael P Pollastri
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
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19
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Pazin WM, Almeida AKA, Manzoni V, Dias JMM, de Abreu ACF, Navarro M, Ito AS, Ribeiro AS, de Oliveira IN. Thermal and solvatochromic effects on the emission properties of a thienyl-based dansyl derivative. RSC Adv 2020; 10:28484-28491. [PMID: 35520094 PMCID: PMC9055963 DOI: 10.1039/d0ra05949h] [Citation(s) in RCA: 6] [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: 05/22/2020] [Accepted: 07/16/2020] [Indexed: 12/22/2022] Open
Abstract
Environmental conditions have a profound effect on the photophysical behavior of highly conjugated compounds, which can be exploited in a large variety of applications. In this context, we use a combination of experimental and computational methods to investigate thermal and solvatochromic effects on the fluorescence properties of a dansyl derivative bearing a thienyl substituent, namely 2-(3-thienyl)ethyl dansylglycinate (TEDG). In particular, we analyze how the solvent polarity and temperature affect the ground and excited state energies of TEDG by using time-resolved and steady-state fluorescence techniques. We determine the changes in dipole moment of the TEDG molecule upon photoexcitation, as well as the solvent polarity effects on the excited state lifetime. Besides, we provide theoretical modeling of the HOMO–LUMO orbitals and the vertical absorption and emission energies using time-dependent density functional theory (TDDFT) as well as the polarizable continuum model (PCM) to include the solvent contribution to the absorption and emission energies. Our results show that the emission mechanism of TEDG involves locally excited states derived from hybrid molecular orbitals, accompanied by a moderate variation of the molecular dipole moment upon light excitation. Our findings demonstrate that TEDG exhibits desirable fluorescence properties that make it a promising candidate for use as a photoactive material in electrochromic, optical thermometry, and thermography applications. We use a combination of experimental and computational methods to investigate thermal and solvatochromic effects on the fluorescence properties of a dansyl derivative bearing a thienyl substituent, 2-(3-thienyl)ethyl dansylglycinate (TEDG).![]()
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Affiliation(s)
- W M Pazin
- Departamento de Física, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo Ribeirão Preto, SP 14040-901 Brazil.,Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista Presidente Prudente, SP 19060-900 Brazil
| | - A K A Almeida
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas Maceió AL 57072-970 Brazil
| | - V Manzoni
- Instituto de Física, Universidade Federal de Alagoas Maceió AL 57072-970 Brazil
| | - J M M Dias
- Departamento de Química Fundamental, CCEN, Universidade Federal de Pernambuco Recife PE 50670-901 Brazil
| | - A C F de Abreu
- Instituto de Física, Universidade Federal de Alagoas Maceió AL 57072-970 Brazil .,Instituto Federal do Piauí, Campus Angical Angical PI 64410-000 Brazil
| | - M Navarro
- Departamento de Química Fundamental, CCEN, Universidade Federal de Pernambuco Recife PE 50670-901 Brazil
| | - A S Ito
- Departamento de Física, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo Ribeirão Preto, SP 14040-901 Brazil
| | - A S Ribeiro
- Instituto de Química e Biotecnologia, Universidade Federal de Alagoas Maceió AL 57072-970 Brazil
| | - I N de Oliveira
- Instituto de Física, Universidade Federal de Alagoas Maceió AL 57072-970 Brazil
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20
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Rincón LM, Sanmartín M, Alonso GL, Rodríguez JA, Muriel A, Casas E, Navarro M, Carbonell A, Lázaro C, Fernández S, González P, Rodríguez M, Jiménez-Mena M, Fernández-Golfín C, Esteban A, García-Bermejo ML, Zamorano JL. Una puntuación de riesgo genético predice recurrencias en pacientes jóvenes con infarto agudo de miocardio. Rev Esp Cardiol 2020. [DOI: 10.1016/j.recesp.2019.08.006] [Citation(s) in RCA: 1] [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: 12/15/2022]
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21
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Klug DM, Diaz-Gonzalez R, DeLano TJ, Mavrogiannaki EM, Buskes MJ, Dalton RM, Fisher JK, Schneider KM, Hilborne V, Fritsche MG, Simpson QJ, Tear WF, Devine WG, Pérez-Moreno G, Ceballos-Pérez G, García-Hernández R, Bosch-Navarrete C, Ruiz-Pérez LM, Gamarro F, González-Pacanowska D, Martinez-Martinez MS, Manzano-Chinchon P, Navarro M, Pollastri MP, Ferrins L. Structure-property studies of an imidazoquinoline chemotype with antitrypanosomal activity. RSC Med Chem 2020; 11:950-959. [PMID: 33479690 PMCID: PMC7496307 DOI: 10.1039/d0md00103a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/12/2020] [Indexed: 02/03/2023] Open
Abstract
Human African trypanosomiasis is a neglected tropical disease (NTD) that is fatal if left untreated. Although approximately 13 million people live in moderate- to high-risk areas for infection, current treatments are plagued by problems with safety, efficacy, and emerging resistance. In an effort to fill the drug development pipeline for HAT, we have expanded previous work exploring the chemotype represented by the compound NEU-1090, with a particular focus on improvement of absorption, distribution, metabolism and elimination (ADME) properties. These efforts resulted in several compounds with substantially improved aqueous solubility, although these modifications typically resulted in a loss of trypanosomal activity. We herein report the results of our investigation into the antiparasitic activity, toxicity, and ADME properties of this class of compounds in the interest of informing the NTD drug discovery community and avoiding duplication of effort.
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Affiliation(s)
- Dana M Klug
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Rosario Diaz-Gonzalez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Travis J DeLano
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Eftychia M Mavrogiannaki
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Melissa J Buskes
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Raeann M Dalton
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - John K Fisher
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Katherine M Schneider
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Vivian Hilborne
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Melanie G Fritsche
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Quillon J Simpson
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Westley F Tear
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - William G Devine
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Guiomar Pérez-Moreno
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Gloria Ceballos-Pérez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Cristina Bosch-Navarrete
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Luis Miguel Ruiz-Pérez
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Dolores González-Pacanowska
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | | | - Pilar Manzano-Chinchon
- Tres Cantos Medicines Development Campus , DDW and CIB , GlaxoSmithKline , Tres Cantos , Spain
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra" Consejo Superior de Investigaciones Cientificas , Granada 18016 , Spain
| | - Michael P Pollastri
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
| | - Lori Ferrins
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , MA 02115 , USA .
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22
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Pagès G, Giménez-Llort L, García-Lareu B, Ariza L, Navarro M, Casas C, Chillón M, Bosch A. Intrathecal AAVrh10 corrects biochemical and histological hallmarks of mucopolysaccharidosis VII mice and improves behavior and survival. Hum Mol Genet 2020; 28:3610-3624. [PMID: 31511867 DOI: 10.1093/hmg/ddz220] [Citation(s) in RCA: 7] [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] [Received: 07/18/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 12/28/2022] Open
Abstract
Mucopolysaccharidosis (MPS) type VII is a lysosomal storage disease caused by ß-glucuronidase deficiency, prompting glycosaminoglycan accumulation in enlarged vesicles, leading to peripheral and neuronal dysfunction. Here, we present a gene therapy strategy using lumbar puncture of AAVrh10 encoding human β-glucuronidase (AAVrh10-GUSB) to adult MPS VII mice. This minimally invasive technique efficiently delivers the recombinant vector to the cerebrospinal fluid (CSF) with a single intrathecal injection. We show that AAVrh10 delivery to the CSF allows global, stable transduction of CNS structures. In addition, drainage of AAVrh10-GUSB from the CSF to the bloodstream resulted in the transduction of somatic organs such as liver, which provided a systemic β-glucuronidase source sufficient to achieve serum enzyme activity comparable to wild type mice. ß-glucuronidase levels were enough to correct biochemical and histopathological hallmarks of the disease in the CNS and somatic organs at short and long term. Moreover, the progression of the bone pathology was also reduced. Importantly, the biochemical correction led to a significant improvement in the physical, cognitive and emotional characteristics of MPS VII mice, and doubling their life span. Our strategy may have implications for gene therapy in patients with lysosomal storage diseases.
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Affiliation(s)
- G Pagès
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - L Giménez-Llort
- Institute of Neurosciences, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Department of Psychiatry and Forensic Medicine, School of Medicine, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - B García-Lareu
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - L Ariza
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - M Navarro
- Center of Animal Biotechnology and Gene Therapy (CBATEG), Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Department of Animal Health and Anatomy, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - C Casas
- Institute of Neurosciences, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain
| | - M Chillón
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.,Vall d'Hebron Research Institute (VHIR), Barcelona 08035, Spain
| | - A Bosch
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Madrid, Spain.,Vall d'Hebron Research Institute (VHIR), Barcelona 08035, Spain
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23
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Abstract
Case history and clinical findings: A flock of 20 sheep was kept within three paddocks on a single property. None of the animals in the flock had been vaccinated against any disease for at least three years. Abdominal bloating and haemorrhagic diarrhoea were observed in Lamb 1 at 24 hours-of-age. The lamb subsequently died within an hour of the onset of clinical signs. Lamb 2 was 3-days-old when observed to be recumbent with opisthotonus. The lamb was treated with dextrose, vitamins B1 and B12, and penicillin G, but died 4 hours later.Pathological findings: Examination of Lamb 1 revealed markedly increased gas within the peritoneum and within dilated loops of intestine. The intestines were dark red and contained large quantities of haemorrhagic fluid. Histology of the intestines revealed peracute mucosal necrosis with minimal accompanying inflammation. The intestinal lumen contained cell debris, haemorrhage, and myriad large Gram-positive bacilli. The intestines of Lamb 2 did not appear bloated or reddened. However, multiple fibrin clots were visible within the pericardial sac. Histopathological examination revealed small foci of necrosis within the mucosa of the distal intestine. The necrotic foci were often associated with large numbers of large Gram-positive bacilli.Immunohistochemsitry and molecular biology: Intestinal samples from Lamb 1 were processed for Clostridium perfringens immunohistochemistry, which revealed large numbers of intralesional, positively immunostained rods. Fragments corresponding to the expected sizes for genes encoding alpha, beta, and epsilon C. perfringens typing toxins were amplified by PCR from DNA extracted from formalin-fixed sections of intestine.Diagnosis: Lamb dysentery due to C. perfringens type B.Clinical relevance: C. perfringens bacteria have a worldwide distribution, but disease due to C. perfringens type B has only been diagnosed in a small number of countries and has never been reported in New Zealand or Australia. C. perfringens type B produce both beta toxin and epsilon toxins, therefore both haemorrhagic enteritis and systemic vascular damage can develop. As many animals are exposed to C. perfringens without developing disease, there must be additional unknown factors that resulted in disease in these particular sheep. Vaccines that specifically protect against C. perfringens type B are available and may be recommended for use in smaller non-commercial flocks, as in the present case.
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Affiliation(s)
- J S Munday
- Department of Pathobiology, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - H Bentall
- Levin and Horowhenua Veterinary Centre, Levin, New Zealand
| | - D Aberdein
- Department of Pathobiology, School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - M Navarro
- California Animal Health and Food Safety Laboratory, University of California at Davis, San Bernardino, CA, USA
| | - F A Uzal
- California Animal Health and Food Safety Laboratory, University of California at Davis, San Bernardino, CA, USA
| | - S Brown
- Department of Pathobiology, School of Veterinary Science, Massey University, Palmerston North, New Zealand
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24
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Sánchez-Guerrero IM, Nieto A, Meseguer J, Navarro M, López Sáez MP, Magdalena MK, Sánchez Pérez M, Pineda F, López Sánchez JD. Occupational Rhinoconjunctivitis Induced by Unusual Allergens of Carrot. J Investig Allergol Clin Immunol 2020; 30:204-206. [PMID: 31932272 DOI: 10.18176/jiaci.0482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- I M Sánchez-Guerrero
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - A Nieto
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - J Meseguer
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - M Navarro
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - M P López Sáez
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - M K Magdalena
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - M Sánchez Pérez
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - F Pineda
- Application Laboratory, Diater, Madrid, Spain
| | - J D López Sánchez
- Allergy Service, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
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25
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Abstract
Abstract
A procedure is described for the determination of arsenic in vegetable samples by hydride generation atomic absorption spectrometry. The samples are mineralized in a microwave acid digestion bomb with nitric acid in the presence of small amounts of vanadium pentoxide. The determination of arsenic is made by the standard addition method. A certified reference sample is analyzed, and the result obtained agreed well with the certified value. The detection limit (dry weight) was about 0.020 μg/g. Reproducibility relative standard deviations ranged from 6.45% at 0.152 μg A μ/g to 8.31 % at 0.059 μg A μ/g. The concentrations of arsenic in vegetable samples ranged from 0.029 to 0.444 μg/g (fresh weight)
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Affiliation(s)
- Miguel Navarro
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18012 Granada, Spain
| | - Maria C Lopez
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18012 Granada, Spain
| | - Hermbmia Lopez
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18012 Granada, Spain
| | - Mercedes Sanchez
- University of Granada, Faculty of Sciences, Department of Analytical Chemistry, E-18072 Granada, Spain
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26
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Abstract
Abstract
A procedure has been developed for determination of total selenium in urine by hydride generation atomic absorption spectrometry. Mineralization was performed with a nitric acid–perchloric acid mixture on a thermostated digestion block. The method was validated by comparison with the method involving mineralization in a microwave acid digestion bomb containing nitric acid and small amounts of vanadium pentoxide. Se(VI) was reduced to Se(IV) by dissolution in 7N HCI. Sample recoveries, precision studies, and analyses of a certified reference material demonstrated the reliability and accuracy of this technique. Urine samples had selenium concentrations ranging from 4.6 to 50.3 μg/L. These values correspond to an average of 54.9 μg per person per day total ingested and bioavailable Se in the daily diet.
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Affiliation(s)
- Miguel Navarro
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18071 Granada, Spain
| | - Herminia Lopez
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18071 Granada, Spain
| | - Maria C Lopez
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18071 Granada, Spain
| | - Vidal Perez
- Hospital Clínico de Motril, Motril, Granada, Spain
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27
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Tear WF, Bag S, Diaz-Gonzalez R, Ceballos-Pérez G, Rojas-Barros DI, Cordon-Obras C, Pérez-Moreno G, García-Hernández R, Martinez-Martinez MS, Ruiz-Perez LM, Gamarro F, Gonzalez Pacanowska D, Caffrey CR, Ferrins L, Manzano P, Navarro M, Pollastri MP. Selectivity and Physicochemical Optimization of Repurposed Pyrazolo[1,5- b]pyridazines for the Treatment of Human African Trypanosomiasis. J Med Chem 2020; 63:756-783. [PMID: 31846577 PMCID: PMC6985937 DOI: 10.1021/acs.jmedchem.9b01741] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
![]()
From
a high-throughput screen of 42 444 known human kinases
inhibitors, a pyrazolo[1,5-b]pyridazine scaffold
was identified to begin optimization for the treatment of human African
trypanosomiasis. Previously reported data for analogous compounds
against human kinases GSK-3β, CDK-2, and CDK-4 were leveraged
to try to improve the selectivity of the series, resulting in 23a which showed selectivity for T. b. brucei over these three human enzymes. In parallel, properties known to
influence the absorption, distribution, metabolism, and excretion
(ADME) profile of the series were optimized resulting in 20g being progressed into an efficacy study in mice. Though 20g showed toxicity in mice, it also demonstrated CNS penetration in
a PK study and significant reduction of parasitemia in four out of
the six mice.
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Affiliation(s)
- Westley F Tear
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , Massachusetts 02115 , United States
| | - Seema Bag
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , Massachusetts 02115 , United States
| | - Rosario Diaz-Gonzalez
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Gloria Ceballos-Pérez
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Domingo I Rojas-Barros
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Carlos Cordon-Obras
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Guiomar Pérez-Moreno
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | | | - Luis Miguel Ruiz-Perez
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Dolores Gonzalez Pacanowska
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Conor R Caffrey
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States
| | - Lori Ferrins
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , Massachusetts 02115 , United States
| | - Pilar Manzano
- Tres Cantos Medicines Development Campus, DDW and CIB , GlaxoSmithKline , Tres Cantos 28760 , Spain
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC) , Granada 18016 , Spain
| | - Michael P Pollastri
- Department of Chemistry & Chemical Biology , Northeastern University , 360 Huntington Avenue , Boston , Massachusetts 02115 , United States
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28
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Grau-Roma L, Blatter S, Wenker C, Sonja K, Navarro M, Uzal F, Posthaus H. Necrotic Enterocolitis Associated with Clostridium perfringens in Lorikeets (Trichoglossus haematodus). J Comp Pathol 2020. [DOI: 10.1016/j.jcpa.2019.10.097] [Citation(s) in RCA: 1] [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: 11/25/2022]
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29
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Lorente Ros A, Pascual Izco M, Hinojar-Baydes R, Carvelli A, Vieitez Florez JM, Abellas Sequeiros M, Pinacho J, Navarro M, Fernandez Santos S, Alonso Salinas G, Hernandez S, Gonzalez Ferrer E, Jimenez Nacher JJ, Zamorano Gomez JL, Fernandez Golfin C. P729 A shocking tumor. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Primary cardiac tumors are a relatively uncommon condition, which may appear both in asymptomatic patients or in a myriad of clinical presentations. Imaging techniques are crucial for its diagnosis, and a multi-modality approach may be useful in the evaluation of this masses.
Case description
A 57 year-old man with history of hypertension presented in the emergency department with acute pulmonary edema and cardiogenic shock. He was admitted to the coronary care unit, and on bedside echocardiography a mass on the tricuspid valve was observed.
Upon clinical improvement, a cardiac CT and cardiac MRI was performed (figure 1). A solid mass with no calcium content and dependent exclusively on the anterior leaflet of the tricuspid valve was seen on CT-scan (fig 1, A and B). Thrombus on the right atrial appendage could also be appreciated.
MRI confirmed the presence of a 18x19 mm mass with isointense signal on T1-turbo spin echo black-blood (fig 1, C) and cine steady-state free precession sequences, whereas an hyperintense signal was evident on T2 weighted images (T2-STIR; fig 1 D). In first pass sequences the central core was hypointense and late gadolinium enhancement showed peripheral enhancement with a non captating central core (fig 1, E).
The patient underwent surgery and the anatomopathological results showed a tumor constituted by dense connective tissue, scarce cellular content and an avascular matrix of mucopolysaccharides, elastic fibers and fusiform cells consistent with the diagnosis of papillary fibroelastoma.
Discussion
The imaging characteristics of papillary fibroelastoma are not commonly reported on MRI. We present an unusually large right-sided fibroelastoma with a characteristic distribution of late gadolinium enhancement, which has not been consistently described on a fibroelastoma.
Cardiac tumors are rare, and a non-invasive differential diagnosis is always a challenge. A multi-modality approach (echocardiography, cardiac-CT and cardiac MRI) as well as integration of relevant morphological information, including the location of the lesion and tissue characteristics was essential to the orientate the most plausible diagnosis. The distinctive images are presented.
Abstract P729 Figure 1.
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Affiliation(s)
- A Lorente Ros
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - M Pascual Izco
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - R Hinojar-Baydes
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - A Carvelli
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - J M Vieitez Florez
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - M Abellas Sequeiros
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - J Pinacho
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - M Navarro
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - S Fernandez Santos
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - G Alonso Salinas
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - S Hernandez
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - E Gonzalez Ferrer
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - J J Jimenez Nacher
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - J L Zamorano Gomez
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
| | - C Fernandez Golfin
- University Hospital Ramon y Cajal de Madrid, Cardiology Department, Madrid, Spain
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30
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Klug DM, Tschiegg L, Diaz R, Rojas-Barros D, Perez-Moreno G, Ceballos G, García-Hernández R, Martinez-Martinez MS, Manzano P, Ruiz LM, Caffrey CR, Gamarro F, Pacanowska DG, Ferrins L, Navarro M, Pollastri MP. Hit-to-Lead Optimization of Benzoxazepinoindazoles As Human African Trypanosomiasis Therapeutics. J Med Chem 2019; 63:2527-2546. [PMID: 31670951 DOI: 10.1021/acs.jmedchem.9b01506] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Human African trypanosomiasis (HAT) is a neglected tropical disease caused by infection with either of two subspecies of the parasite Trypanosoma brucei. Due to a lack of economic incentive to develop new drugs, current treatments have severe limitations in terms of safety, efficacy, and ease of administration. In an effort to develop new HAT therapeutics, we report the structure-activity relationships around T. brucei for a series of benzoxazepinoindazoles previously identified through a high-throughput screen of human kinase inhibitors, and the subsequent in vivo experiments for HAT. We identified compound 18, which showed an improved kinase selectivity profile and acceptable pharmacokinetic parameters, as a promising lead. Although treatment with 18 cured 60% of mice in a systemic model of HAT, the compound was unable to clear parasitemia in a CNS model of the disease. We also report the results of cross-screening these compounds against T. cruzi, L. donovani, and S. mansoni.
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Affiliation(s)
- Dana M Klug
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Laura Tschiegg
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Rosario Diaz
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Domingo Rojas-Barros
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Guiomar Perez-Moreno
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Gloria Ceballos
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Maria Santos Martinez-Martinez
- Diseases of the Developing World (DDW), Tres Cantos Medicines Development Campus, GlaxoSmithKline, Tres Cantos 28760, Spain
| | - Pilar Manzano
- Diseases of the Developing World (DDW), Tres Cantos Medicines Development Campus, GlaxoSmithKline, Tres Cantos 28760, Spain
| | - Luis Miguel Ruiz
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Conor R Caffrey
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Dolores Gonzalez Pacanowska
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Lori Ferrins
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra", Consejo Superior de Investigaciones Cientificas (CSIC), Granada 18016, Spain
| | - Michael P Pollastri
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
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31
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Abstract
Abstract
An efficient method was developed for the determination of nanogram levels of lithium in biological samples. Serum samples from human subjects from southeastern Spain, treated or not treated with lithium carbonate, were analyzed by electrothermal atomic absorption spectrometry. The samples were previously treated with a matrix modifier consisting of 0.1%Triton X-100 and injected through a graphite tube with L'vov platform. The Li concentrations measured by the procedure described for the 3 certified reference samples used were not significantly different (p > 0.05) than certified levels. Sample recoveries and variability during several days, with coefficients of variation from 4.00 to 14.8%, demonstrated the reliability and accuracy of this technique. Mean Li concentration determined in the serum of individuals with psychiatric disorders treated with Li (n = 117, 5.077 ± 1.795 μg Li/mL) was significantly higher (p < 0.001) than that in individuals not treated with Li (n = 24, 1.902 ± 2.054 ng Li/mL).
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Affiliation(s)
- Sara González
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18071 Granada, Spain
| | - Miguel Navarro
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18071 Granada, Spain
| | - Herminia López
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18071 Granada, Spain
| | - María C López
- University of Granada, Faculty of Pharmacy, Department of Nutrition and Bromatology, E-18071 Granada, Spain
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32
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Saura A, Iribarren PA, Rojas-Barros D, Bart JM, López-Farfán D, Andrés-León E, Vidal-Cobo I, Boehm C, Alvarez VE, Field MC, Navarro M. SUMOylated SNF2PH promotes variant surface glycoprotein expression in bloodstream trypanosomes. EMBO Rep 2019; 20:e48029. [PMID: 31693280 PMCID: PMC6893287 DOI: 10.15252/embr.201948029] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 09/22/2019] [Accepted: 09/26/2019] [Indexed: 01/10/2023] Open
Abstract
SUMOylation is a post‐translational modification that positively regulates monoallelic expression of the trypanosome variant surface glycoprotein (VSG). The presence of a highly SUMOylated focus associated with the nuclear body, where the VSG gene is transcribed, further suggests an important role of SUMOylation in regulating VSG expression. Here, we show that SNF2PH, a SUMOylated plant homeodomain (PH)‐transcription factor, is upregulated in the bloodstream form of the parasite and enriched at the active VSG telomere. SUMOylation promotes the recruitment of SNF2PH to the VSG promoter, where it is required to maintain RNA polymerase I and thus to regulate VSG transcript levels. Further, ectopic overexpression of SNF2PH in insect forms, but not of a mutant lacking the PH domain, induces the expression of bloodstream stage‐specific surface proteins. These data suggest that SNF2PH SUMOylation positively regulates VSG monoallelic transcription, while the PH domain is required for the expression of bloodstream‐specific surface proteins. Thus, SNF2PH functions as a positive activator, linking expression of infective form surface proteins and VSG regulation, thereby acting as a major regulator of pathogenicity.
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Affiliation(s)
- Andreu Saura
- Instituto de Parasitología y Biomedicina "López-Neyra", CSIC (IPBLN-CSIC), Granada, Spain
| | | | - Domingo Rojas-Barros
- Instituto de Parasitología y Biomedicina "López-Neyra", CSIC (IPBLN-CSIC), Granada, Spain
| | - Jean M Bart
- Instituto de Parasitología y Biomedicina "López-Neyra", CSIC (IPBLN-CSIC), Granada, Spain
| | - Diana López-Farfán
- Instituto de Parasitología y Biomedicina "López-Neyra", CSIC (IPBLN-CSIC), Granada, Spain
| | - Eduardo Andrés-León
- Instituto de Parasitología y Biomedicina "López-Neyra", CSIC (IPBLN-CSIC), Granada, Spain
| | - Isabel Vidal-Cobo
- Instituto de Parasitología y Biomedicina "López-Neyra", CSIC (IPBLN-CSIC), Granada, Spain
| | - Cordula Boehm
- School of Life Sciences, University of Dundee, Dundee, UK
| | | | - Mark C Field
- School of Life Sciences, University of Dundee, Dundee, UK.,Biology Centre, Institute of Parasitology, Czech Academy of Sciences, Ceske Budejovice, Czech Republic
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra", CSIC (IPBLN-CSIC), Granada, Spain
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33
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Abstract
The gastrointestinal tract (GIT) is an interface between the external and internal milieus that requires continuous monitoring for nutrients or pathogens and toxic chemicals. The study of the physiological/molecular mechanisms, mediating the responses to the monitoring of the GIT contents, has been referred to as chemosensory science. While most of the progress in this area of research has been obtained in laboratory rodents and humans, significant steps forward have also been reported in pigs. The objective of this review was to update the current knowledge on nutrient chemosensing in pigs in light of recent advances in humans and laboratory rodents. A second objective relates to informing the existence of nutrient sensors with their functionality, particularly linked to the gut peptides relevant to the onset/offset of appetite. Several cell types of the intestinal epithelium such as Paneth, goblet, tuft and enteroendocrine cells (EECs) contain subsets of chemosensory receptors also found on the tongue as part of the taste system. In particular, EECs show specific co-expression patterns between nutrient sensors and/or transceptors (transport proteins with sensing functions) and anorexigenic hormones such as cholecystokinin (CCK), peptide tyrosine tyrosine (PYY) or glucagon-like peptide-1 (GLP-1), amongst others. In addition, the administration of bitter compounds has an inhibitory effect on GIT motility and on appetite through GLP-1-, CCK-, ghrelin- and PYY-labelled EECs in the human small intestine and colon. Furthermore, the mammalian chemosensory system is the target of some bacterial metabolites. Recent studies on the human microbiome have discovered that commensal bacteria have developed strategies to stimulate chemosensory receptors and trigger host cellular functions. Finally, the study of gene polymorphisms related to nutrient sensors explains differences in food choices, food intake and appetite between individuals.
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Affiliation(s)
- E Roura
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, Queensland, Australia
| | - I Depoortere
- Translational Research Center for Gastrointestinal Disorders, Gut Peptide Research Lab, University of Leuven, Belgium
| | - M Navarro
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, Queensland, Australia
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34
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Rincon LM, Sanmartin M, Alonso GL, Rodriguez JA, Muriel A, Casas E, Navarro M, Carbonell A, Lazaro C, Fernandez S, Jimenez Mena M, Fernandez Golfin C, Esteban A, Garcia Bermejo ML, Zamorano JL. P1551A genetic risk score predicts recurrent events after myocardial infarction in young adults. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
To evaluate whether a genetic risk score (GRS) improves the prediction of recurrent events in young non-diabetic patients presenting with an acute myocardial infarction and identifies a more aggressive form of atherosclerosis in this population.
Methods and results
We performed a prospective study including 81 consecutive non-diabetic patients aged below 55 y.o. presenting with an acute myocardial infarction (48±6 y.o., 89% male). A comprehensive study including serum biomarkers, genetic testing and cardiac CT was performed. We studied the association of a GRS composed of 11 genetic variants with a primary composite end-point (all-cause mortality, recurrent acute coronary syndrome, and cardiac re-hospitalisation). After a median follow-up of 4.1 (3.5 - 4.4) years 24 recurrent events were documented. A significantly higher prevalence of 9 out of 11 risk alleles was noted compared with general population. The GRS was significantly associated with recurrent events, especially when baseline LDL-cholesterol levels were elevated. Compared with the low-risk GRS category, the multivariate-adjusted hazard ratio for recurrent events for the intermediate-risk GRS category was 10.2 (95% CI 1.1–100.3, p=0.04) and for the high-risk GRS was 20.7 (2.4–181.0, p=0.006) when LDL-C ≥2.8 mmol/L. Inclusion of the GRS improved the C statistic (ΔC statistic =0.086), the continuous Net Reclassification Index (30%) and the Integrated Discrimination Improvement (0.05) compared with a multivariate clinical risk model. Cardiac CT detected coronary calcified atherosclerosis and numerous plaques but it had a limited value for prediction of recurrences. No association was observed between extracellular matrix metabolism biomarkers and GRS or recurrent events in this population.
Cox regression analysis between GRS terciles and LDL-C Univariate analysis Multivariate analysis* HR (95% CI) p-value HR (95% CI) p-value* Low GRS 1 1 Intermediate GRS 2.0 (0.7–5.8) 0.21 LDL-C≤110 mg/dL (≤2.8 mmol/L) 1.0 (0.3–4.0) >110 mg/dL (>2.8 mmol/L) 10.2 (1.1–100.3) 0.04 High GRS 3.0 (1.0–9.2) 0.05 LDL-C≤110 mg/dL (≤2.8 mmol/L) 0.3 (0.1–1.9) >110 mg/dL (>2.8 mmol/L) 20.7 (2.4–181.0) 0.006 *Multivariate model adjusted for GRACE risk score and LDL-C and interaction. There was a strong interaction between GRS terciles and LDL-C (p<0.01).
Recurrent events based on genetic risk
Conclusions
A multilocus genetic risk score identified non-diabetic young patients at increased risk for recurrent events after a myocardial infarction. The significance of LDL-cholesterol in relation to genetic predisposition for recurrences merits further evaluation.
Acknowledgement/Funding
Instituto de Salud Carlos III (PI12/0564, PI14/01152 and PI15/00667), the CIBERCV and the Spanish Society of Cardiology (2015/CC)
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Affiliation(s)
- L M Rincon
- University Hospital Ramon y Cajal, Madrid, Spain
| | - M Sanmartin
- University Hospital Ramon y Cajal, Madrid, Spain
| | - G L Alonso
- University Hospital Ramon y Cajal, Madrid, Spain
| | - J A Rodriguez
- Center for Applied Medical Research, Pamplona, Spain
| | - A Muriel
- Instituto Ramon y Cajal de Investigacion Sanitaria (IRYCIS), Madrid, Spain
| | - E Casas
- University Hospital Ramon y Cajal, Madrid, Spain
| | - M Navarro
- University Hospital Ramon y Cajal, Madrid, Spain
| | - A Carbonell
- University Hospital 12 de Octubre, Madrid, Spain
| | - C Lazaro
- Hospital Torrejόn, Madrid, Spain
| | - S Fernandez
- University Hospital Ramon y Cajal, Madrid, Spain
| | | | | | - A Esteban
- University Hospital Ramon y Cajal, Madrid, Spain
| | - M L Garcia Bermejo
- Instituto Ramon y Cajal de Investigacion Sanitaria (IRYCIS), Madrid, Spain
| | - J L Zamorano
- University Hospital Ramon y Cajal, Madrid, Spain
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Gogishvili M, Mobashery N, Makharadze T, Navarro M, Snodgrass P, Chen H, Lowy I, Rietschel P, Lee S. P2.01-26 EMPOWER-Lung 3: Phase 3 Study of Combinations of Cemiplimab and Chemotherapy in First-Line Treatment of Advanced NSCLC. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jove M, Moran T, Teule A, Menendez M, Gausachs M, Vilariño N, Sánchez RP, Cirauqui B, Estival A, Carcereny E, Domenech M, Navarro M, Bosch-Barrera J, Fina C, Izquierdo A, Ruffinelli J, Varela M, Mesia C, Hernandez A, Gonzalez S, Lazaro C, Brunet J, Nadal E. P1.01-54 Somatic Genome Alterations in Lung Cancer Patients Diagnosed with Li Fraumeni Syndrome. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.769] [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: 10/25/2022]
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Sezer A, Gogishvili M, Bentsion D, Kilickap S, Lowczak A, Gumus M, Gladkov O, Clingan P, Sriuranpong V, Rizvi N, Lee S, Li S, Snodgrass P, Navarro M, Lowy I, Rietschel P. P2.01-01 Cemiplimab, a Human PD-1 Monoclonal Antibody, Versus Chemotherapy in First-Line Treatment of Advanced NSCLC with PD-L1 ≥50%. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Balana C, Sepulveda J, Pineda E, Vaz M, Mesia C, Fuster J, Girones R, Muñoz-Langa J, Navarro M, Alonso M, Gil Gil M, Herrero A, Estival A, Gallego O, Peralta S, Olier C, Pérez-Segura P, Covela M, Martinez García M, Domenech M, Carrato C, Sanz C, Velarde J, Berrocal A, Luque R, De las Peñas R, Del Barco S. P14.58 Extending adjuvant temozolomide longer than six cycles doesn’t add any benefit to glioblastoma patients according to the randomized GEINO-014 TRIAL. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
BACKGROUND
Standard treatment of glioblastoma (GBM) is focal radiation with concomitant and adjuvant temozolomide (TMZ) for 6 cycles. The GEINO-14-01 trial (NCT02209948) investigated the role of extending adjuvant TMZ to 12 cycles in a randomized multicenter study.
MATERIAL AND METHODS
Between Aug/2014 and Nov/2018, 166 patients (p) were screened and 159 randomized to extend (80p) or not (79p) TMZ treatment to 12 cycles after proving stable disease in the MRI performed before inclusion. The trial was stratified by MGMT status and presence or absence of residual disease (defined as a residual enhancement larger than 1cm on the MRI). The primary endpoint was differences in 6monthsPFS, secondary endpoints were differences in PFS, OS, toxicity, between arms and per stratification factors.
RESULTS
Median age was 60.4 (range 29–83), 97p (61%) were methylated and 83 p (52.2%) were reported with residual disease. Median (m) PFS was 7.9 months (95%CI: 6.1–9.8) and mOS: 20.9 (95%CI: 17.6–24.1). A methylated status was a factor of better PFS (HR=0.29, 95% CI 0.46–0.95; p=0.029) and better OS (HR= 0.43: 95% CI 0.28–0.66; p=0.000) as well as the absence of residual disease (PFS: HR = 0.84: 95% CI =0.71–1.01; p=0.068; OS: HR=0.77, 95%CI 0.63–0.96; p=0.019). We didn’t find any difference in PFS (HR=1.02, 95%CI 0.85–1.21; p=0.82), or OS (HR=0.90; 0.73–1.11; p=0.34) on extending treatment with temozolomide longer than 6 cycles.
CONCLUSION
There is no benefit of continuing TMZ treatment for more than 6 cycles in the adjuvant treatment of glioblastoma. Final data will be presented at the congress. Supported by a Grant of the ISCIII: PI13/01751
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Affiliation(s)
- C Balana
- Institut Catala Oncologia Badalona, Badalona, Spain
| | - J Sepulveda
- Hospital Universitario 12 de Octubre, Madrid, Spain
| | - E Pineda
- Hospital Clinic de Barcelona, Barcelona, Spain
| | - M Vaz
- Hospital Ramon y Cajal, Madrid, Spain
| | - C Mesia
- Institut Catala Oncologia Hospital Duran y Reynalds, Hospitalet de Llobregat, Spain
| | - J Fuster
- Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - R Girones
- Hospital Universitari i Politècnic la Fe, Valencia, Spain
| | - J Muñoz-Langa
- Hospital Universitari i Politècnic la Fe, Valencia, Spain
| | - M Navarro
- Hospital Universitario de Salamanca, Salamanca, Spain
| | - M Alonso
- Hospital Universitario la Virgen del Rocio, Sevilla, Spain
| | - M Gil Gil
- Institut Catala Oncologia Hospital Duran y Reynalds, Hospitalet de Llobregat, Spain
| | - A Herrero
- Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - A Estival
- Institut Catala Oncologia Badalona, Badalona, Spain
| | - O Gallego
- Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - S Peralta
- Hospital Universitari Sant Joan de Reus, Reus, Spain
| | - C Olier
- Hospital Universitario Fundacion Alcorcon, Alcorcon, Spain
| | | | - M Covela
- Hospital Universitario Lucus Augusti, Lugo, Spain
| | | | - M Domenech
- Institut Catala Oncologia Badalona, Badalona, Spain
| | - C Carrato
- Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - C Sanz
- Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - J Velarde
- Institut Catala Oncologia Badalona, Badalona, Spain
| | - A Berrocal
- Hospital General Universitari de Valencia, Valencia, Spain
| | - R Luque
- HospitalUniversitario Virgen de las Nieves, Granada, Spain
| | | | - S Del Barco
- Institut Catala Oncologia Hospital Universitari Josep Trueta, Girona, Spain
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Ciruela P, Broner S, Izquierdo C, Pallarés R, Muñoz-Almagro C, Hernández S, Grau I, Domínguez A, Jané M, Ciruela P, Izquierdo C, Broner S, Hernández S, Jané M, Muñoz-Almagro C, Esteva C, de Sevilla M, Henares D, Pallarés R, Ardanuy C, Grau I, Marco F, Margall N, González-Cuevas A, Díaz A, Martin M, Llaberia J, Curriu M, Gallés C, Capdevila E, Gassiot P, Martínez-Zurita M, Martí C, Morta M, Sauca G, Gassós A, Sanfeliu E, Ballester F, Pujol I, Olsina M, Raga X, Gómez-Bertomeu F, Pérez-Moreno M, Vilamala A, Navarro M, Ribelles M, Garcia M, Padilla E, Prim N, Fontanals D, Sanfeliu I, Benitez M, Jou E, Sanjosé C, Giménez M, Quesada M, de la Fuente J, Calderon A, Ayala P, Vega L, Pérez-Jové J, Blanco A, Balado C, Valle I, Bastida M, Gonzalez-Moreno O, Ubanell A, Fenoll A, Yuste J. Indirect effects of paediatric conjugate vaccines on invasive pneumococcal disease in older adults. Int J Infect Dis 2019; 86:122-130. [DOI: 10.1016/j.ijid.2019.06.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/28/2019] [Accepted: 06/30/2019] [Indexed: 12/29/2022] Open
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Grimmer T, Rabe C, Navarro M, Clayton D, Manuilova E, Peters O, Eichenlaub U, Smith J, Ostrowitzki S, Honigberg L, Bittner T. P06 Concordance of florbetapir (18F) PET and Elecsys® β-Amyloid(1–42) CSF immunoassay in the CREAD (BN29552) study of crenezumab in prodromal-to-mild AD. Clin Neurophysiol 2019. [DOI: 10.1016/j.clinph.2019.04.662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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41
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Holden JM, Koreny L, Obado S, Ratushny AV, Chen WM, Bart JM, Navarro M, Chait BT, Aitchison JD, Rout MP, Field MC. Involvement in surface antigen expression by a moonlighting FG-repeat nucleoporin in trypanosomes. Mol Biol Cell 2019; 29:1100-1110. [PMID: 29496964 PMCID: PMC5921576 DOI: 10.1091/mbc.e17-06-0430] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The nuclear pore complex is an ancient component of the eukaryotic cell. We show here that an FG nucleoporin, TbNup53b, in trypanosomes has an association with the splicing machinery and roles in gene expression, indicating that moonlighting roles for nucleoporins are highly ancient and present in the earliest eukaryotes. Components of the nuclear periphery coordinate a multitude of activities, including macromolecular transport, cell-cycle progression, and chromatin organization. Nuclear pore complexes (NPCs) mediate nucleocytoplasmic transport, mRNA processing, and transcriptional regulation, and NPC components can define regions of high transcriptional activity in some organisms at the nuclear periphery and nucleoplasm. Lineage-specific features underpin several core nuclear functions and in trypanosomatids, which branched very early from other eukaryotes, unique protein components constitute the lamina, kinetochores, and parts of the NPCs. Here we describe a phenylalanine-glycine (FG)-repeat nucleoporin, TbNup53b, that has dual localizations within the nucleoplasm and NPC. In addition to association with nucleoporins, TbNup53b interacts with a known trans-splicing component, TSR1, and has a role in controlling expression of surface proteins including the nucleolar periphery-located, procyclin genes. Significantly, while several nucleoporins are implicated in intranuclear transcriptional regulation in metazoa, TbNup53b appears orthologous to components of the yeast/human Nup49/Nup58 complex, for which no transcriptional functions are known. These data suggest that FG-Nups are frequently co-opted to transcriptional functions during evolution and extend the presence of FG-repeat nucleoporin control of gene expression to trypanosomes, suggesting that this is a widespread and ancient eukaryotic feature, as well as underscoring once more flexibility within nucleoporin function.
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Affiliation(s)
| | - Ludek Koreny
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
| | | | - Alexander V Ratushny
- Center for Infectious Disease Research (formerly Seattle Biomed) and Institute for Systems Biology, Seattle, WA 98109-5234
| | - Wei-Ming Chen
- Center for Infectious Disease Research (formerly Seattle Biomed) and Institute for Systems Biology, Seattle, WA 98109-5234
| | - Jean-Mathieu Bart
- Instituto de Parasitología y Biomedicina "López-Neyra," Consejo Superior de Investigaciones Científicas, 18016 Armilla (Granada), Spain
| | - Miguel Navarro
- Instituto de Parasitología y Biomedicina "López-Neyra," Consejo Superior de Investigaciones Científicas, 18016 Armilla (Granada), Spain
| | | | - John D Aitchison
- Center for Infectious Disease Research (formerly Seattle Biomed) and Institute for Systems Biology, Seattle, WA 98109-5234
| | | | - Mark C Field
- School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
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Navarro M, Bluguermann C, Von Meyeren M, Bariani V, Osycka C, Mutto A. 2 Role of histone H3 lysine 9 trimethylation during bovine pre-implantation embryonic development. Reprod Fertil Dev 2019. [DOI: 10.1071/rdv31n1ab2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Histones play an important role in DNA’s compaction and organisation into the cellular nucleus. Depending on which histone modification occurs, chromatin can take a conformation of heterochromatin or euchromatin, which are associated with gene repression or expression, respectively. Histone H3 lysine 9 (H3K9) trimethylation (H3K9me3) is associated with gene silencing. At least 3 methyltransferases are able to change the methylation status of H3K9: SUV39H1, SUV39H2, and SETDB1. In several mammalian species, modulation of H3K9 methylation status has been demonstrated to be necessary to achieve a successful pre-implantation embryonic development after IVF or somatic cell NT. The aim of this work was to study the role of H3K9me3 in IVF pre-implantation bovine embryos. For this purpose, immunostaining of H3K9me3 at different pre-implantation stages of development was performed. Further, the relative abundances of the methyltransferases SUV39H1 and SUV39H2 were measured by real-time PCR using luciferase transcript as an exogenous gene for normalization. Finally, to evaluate H3K9me3 involvement during pre-implantation embryonic development, we generated SUV39H1 or SUV39H2 knockout embryos by the CRISPR/Cas9 system. We designed guide RNA targeting SUV39H1 or SUV39H2 and co-injected the presumptive zygote’s cytoplasm 18h post-fertilization with Cas9 protein. At Day 8 post-fertilization, the number of blastocysts was assessed and embryos were immunostained to evaluate H3K9me3. Results were analysed using Student’s t-test or ANOVA with the post-hoc Tukey test depending on data set (P ≤ 0.05) and reported as means±standard errors of the mean. Oocytes at germinal vesicle stage and metaphase II as well as embryos at different stages of pre-implantation development (2, 4, and 8 cells, morula, and blastocyst; n=6) were immunoreactive for H3K9me3. Expression of SUV39H1 and SUV39H2 mRNA decreased significantly as embryonic development progressed, reaching undetectable levels at stages where genome activation had already occurred (morula and blastocyst; P<0.0001, n=3). When zygotes were co-injected with the guide RNA targeting SUV39H1/Cas9, embryonic production showed a significant increase compared with the control [42.26%±5.03 (28/65) v. 23.86%±3.99 (21/88), respectively; P=0.034, n=4], and H3K9me3 immunostaining was reduced in treated embryos. Editing efficiency was estimated at 66%. In contrast, no statistical differences were found in embryonic production or H3K9me3 immunostaining in embryos co-injected with the guide RNA targeting SUV39H2/Cas9 (P=0.57, n=3). In conclusion, we were able to characterise H3K9me3 and determine transcript levels of methyltransferases SUV39H1 and SUV39H2 in oocytes and different stages of pre-implantation embryonic development. We also demonstrated that SUV39H1 deletion led to an increased embryonic production, suggesting that H3K9me3 removal would allow a greater relaxation of the heterochromatin and consequently a successful activation of embryonic genes. This highlights the essential role of H3K9me3 during bovine pre-implantation embryonic development.
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Alfaro A, Asensio M, García-Escrivá A, Medrano V, Salom J, Tortosa D, Palao S, Lezcano M, Berenguer L, Navarro M, Cerdán M, Buendía J, Giner J. LAM study: Effects of lacosamide on behaviour and quality of life in patients with epilepsy. Neurología (English Edition) 2019. [DOI: 10.1016/j.nrleng.2018.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Navarro M, Mena A, Giordanengo T, Gómez-Alonso S, García-Romero E, Fort F, Canals J, Hermosín-Gutíerrez I, Zamora F. Influence of the micro-oxygenation dose and supplementation with oak staves of different potential of ellagitannin release on wine color and composition. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191202012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Aliquots of a wine of Merlot were micro-oxygenated at two doses of oxygen (2.5 and 5.0 mg of O2/L.month) in the presence or not of oak staves of different potential ellagitannin release (PER) for three months. In general, micro-oxygenation increased the color intensity and stability probably because favor the formation of new pigments. The presence of staves increased the total phenolic index and the ellagitannin concentration, and this effect was higher when greater was the PER of the staves. Finally, the dose of microoxygenation only affects the concentration of total furanic compounds whereas the PER of the staves seems to determine the concentration of furanic compounds, volatile phenols and β-methyl-γ-octolactones.
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Pérez-Beteta J, Molina-García D, Martínez-González A, Henares-Molina A, Amo-Salas M, Luque B, Arregui E, Calvo M, Borrás JM, Martino J, Velásquez C, Meléndez-Asensio B, de Lope ÁR, Moreno R, Barcia JA, Asenjo B, Benavides M, Herruzo I, Lara PC, Cabrera R, Albillo D, Navarro M, Pérez-Romasanta LA, Revert A, Arana E, Pérez-García VM. Correction to: Morphological MRI-based features provide pretreatment survival prediction in glioblastoma. Eur Radiol 2018; 29:2729. [PMID: 30547198 DOI: 10.1007/s00330-018-5870-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The original version of this article, published on 15 October 2018, unfortunately contained a mistake. The following correction has therefore been made in the original: The name of Mariano Amo-Salas and the affiliation of Ismael Herruzo were presented incorrectly.
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Affiliation(s)
- Julián Pérez-Beteta
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - David Molina-García
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain.
| | - Alicia Martínez-González
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Araceli Henares-Molina
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Mariano Amo-Salas
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Belén Luque
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Elena Arregui
- Department of Radiology, Hospital General de Ciudad Real, Ciudad Real, Spain
| | - Manuel Calvo
- Department of Radiology, Hospital General de Ciudad Real, Ciudad Real, Spain
| | - José M Borrás
- Department of Neurosurgery, Hospital General de Ciudad Real, Ciudad Real, Spain
| | - Juan Martino
- Department of Neurosurgery, Hospital Universitario Marqués de Valdecilla and Fundación Instituto de Investigación Marqués de Valdecilla, Santander, Spain
| | - Carlos Velásquez
- Department of Neurosurgery, Hospital Universitario Marqués de Valdecilla and Fundación Instituto de Investigación Marqués de Valdecilla, Santander, Spain
| | | | | | - Raquel Moreno
- Department of Radiology, Hospital Virgen de la Salud, Toledo, Spain
| | - Juan A Barcia
- Department of Neurosurgery, Hospital Clínico San Carlos, Madrid, Spain
| | - Beatriz Asenjo
- Department of Radiology, Hospital Carlos Haya, Málaga, Spain
| | - Manuel Benavides
- Department of Medical Oncology, Hospital Carlos Haya, Málaga, Spain
| | - Ismael Herruzo
- Department of Radiation Oncology, Hospital Carlos Haya, Málaga, Spain
| | - Pedro C Lara
- Department of Radiation Oncology, Hospital Universitario Doctor Negrín, Gran Canaria, Spain
| | - Raquel Cabrera
- Department of Radiation Oncology, Hospital Universitario Doctor Negrín, Gran Canaria, Spain
| | - David Albillo
- Department of Radiology, Hospital Universitario de Salamanca, Salamanca, Spain
| | - Miguel Navarro
- Department of Medical Oncology, Hospital Universitario de Salamanca, Salamanca, Spain
| | | | - Antonio Revert
- Department of Radiology, Hospital de Manises, Valencia, Spain
| | - Estanislao Arana
- Department of Radiology, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - Víctor M Pérez-García
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
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Marco A, Roget M, Cervantes M, Forné M, Planella R, Miquel M, Ortiz J, Navarro M, Gallego C, Vergara M. Comparison of effectiveness and discontinuation of interferon-free therapy for hepatitis C in prison inmates and noninmates. J Viral Hepat 2018; 25:1280-1286. [PMID: 29851225 DOI: 10.1111/jvh.12940] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 05/17/2018] [Indexed: 12/15/2022]
Abstract
Chronic hepatitis C treatment with direct acting antiviral (DAA) therapy during incarceration is an attractive option, due to its short duration and to the possibility of directly observed treatment or supervision. The aim of this study is to compare the effectiveness and rates of discontinuation of DAA treatment in prisoners and nonprisoners. We studied all patients treated in the 10 prisons of Catalonia and at 3 public hospitals in the Barcelona area between 1 January 2015 and 30 April 2016. We analysed sustained viral response (SVR) and rates of discontinuation through intention-to-treat and modified-intention-to-treat analyses, the latter excluding discontinuations due to release from prison. One hundred and eighty-eight inmates and 862 noninmates were included. Prisoners were significantly younger than nonprisoners, with higher proportions of men, drug users, HIV infection, genotypes 1a and 3 and more treatment with psychiatric drugs. Overall, 98.4% of patients completed treatment. The discontinuation rate was low, but higher in inmates (3.7% vs 1.2% noninmates; P = .003) and in community patients >65 years old (2.8% vs 1.2% in under 65 seconds; P = .008). Among the inmates, 7 (42.8%) discontinuations were due to release. SVR was 93.1% in inmates vs 96.5% in noninmates (P = .08) by intention-to-treat and 95.1% vs 96.5% (P = .37) by modified intention-to-treat. Virologic failure rates were similar (3.8% vs 3% in noninmates; P = .60). SVR, virologic failure and discontinuation rates were similar in inmates and noninmates. Currently, prisons are considered a priority for the implementation of DAA. Improved coordination between penitentiary and community health systems would help to ensure therapeutic continuity in released prisoners.
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Affiliation(s)
- A Marco
- Prison Health Program, Catalan Institute of Health, Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - M Roget
- Hepatology Unit, Consorci Sanitari, Terrassa, Spain
| | - M Cervantes
- Infectious Disease Unit, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | - M Forné
- Instituto Carlos III, CIBERehd, Madrid, Spain.,Digestive Disease, Department Hospital Universitari Mútua Terrassa, Universitat Central de Barcelona, Madrid, Spain
| | - R Planella
- Health Services of Ponent Penitentiary Centre, Madrid, Spain
| | - M Miquel
- Instituto Carlos III, CIBERehd, Madrid, Spain.,Hepatology Unit, Digestive Disease Department, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | - J Ortiz
- Hepatology Unit, Consorci Sanitari, Terrassa, Spain
| | - M Navarro
- Infectious Disease Unit, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | - C Gallego
- Health Services of Quatre Camins Penitentiary Centre, Barcelona, Spain
| | - M Vergara
- Instituto Carlos III, CIBERehd, Madrid, Spain.,Hepatology Unit, Digestive Disease Department, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
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47
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Pérez-Beteta J, Molina-García D, Martínez-González A, Henares-Molina A, Amo-Salas M, Luque B, Arregui E, Calvo M, Borrás JM, Martino J, Velásquez C, Meléndez-Asensio B, de Lope ÁR, Moreno R, Barcia JA, Asenjo B, Benavides M, Herruzo I, Lara PC, Cabrera R, Albillo D, Navarro M, Pérez-Romasanta LA, Revert A, Arana E, Pérez-García VM. Morphological MRI-based features provide pretreatment survival prediction in glioblastoma. Eur Radiol 2018; 29:1968-1977. [PMID: 30324390 DOI: 10.1007/s00330-018-5758-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/19/2018] [Accepted: 09/12/2018] [Indexed: 12/16/2022]
Abstract
OBJECTIVES We wished to determine whether tumor morphology descriptors obtained from pretreatment magnetic resonance images and clinical variables could predict survival for glioblastoma patients. METHODS A cohort of 404 glioblastoma patients (311 discoveries and 93 validations) was used in the study. Pretreatment volumetric postcontrast T1-weighted magnetic resonance images were segmented to obtain the relevant morphological measures. Kaplan-Meier, Cox proportional hazards, correlations, and Harrell's concordance indexes (c-indexes) were used for the statistical analysis. RESULTS A linear prognostic model based on the outstanding variables (age, contrast-enhanced (CE) rim width, and surface regularity) identified a group of patients with significantly better survival (p < 0.001, HR = 2.57) with high accuracy (discovery c-index = 0.74; validation c-index = 0.77). A similar model applied to totally resected patients was also able to predict survival (p < 0.001, HR = 3.43) with high predictive value (discovery c-index = 0.81; validation c-index = 0.92). Biopsied patients with better survival were well identified (p < 0.001, HR = 7.25) by a model including age and CE volume (c-index = 0.87). CONCLUSIONS Simple linear models based on small sets of meaningful MRI-based pretreatment morphological features and age predicted survival of glioblastoma patients to a high degree of accuracy. The partition of the population using the extent of resection improved the prognostic value of those measures. KEY POINTS • A combination of two MRI-based morphological features (CE rim width and surface regularity) and patients' age outperformed previous prognosis scores for glioblastoma. • Prognosis models for homogeneous surgical procedure groups led to even more accurate survival prediction based on Kaplan-Meier analysis and concordance indexes.
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Affiliation(s)
- Julián Pérez-Beteta
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - David Molina-García
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain.
| | - Alicia Martínez-González
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Araceli Henares-Molina
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Mariano Amo-Salas
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Belén Luque
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
| | - Elena Arregui
- Department of Radiology, Hospital General de Ciudad Real, Ciudad Real, Spain
| | - Manuel Calvo
- Department of Radiology, Hospital General de Ciudad Real, Ciudad Real, Spain
| | - José M Borrás
- Department of Neurosurgery, Hospital General de Ciudad Real, Ciudad Real, Spain
| | - Juan Martino
- Department of Neurosurgery, Hospital Universitario Marqués de Valdecilla and Fundación Instituto de Investigación Marqués de Valdecilla, Santander, Spain
| | - Carlos Velásquez
- Department of Neurosurgery, Hospital Universitario Marqués de Valdecilla and Fundación Instituto de Investigación Marqués de Valdecilla, Santander, Spain
| | | | | | - Raquel Moreno
- Department of Radiology, Hospital Virgen de la Salud, Toledo, Spain
| | - Juan A Barcia
- Department of Neurosurgery, Hospital Clínico San Carlos, Madrid, Spain
| | - Beatriz Asenjo
- Department of Radiology, Hospital Carlos Haya, Málaga, Spain
| | - Manuel Benavides
- Department of Medical Oncology, Hospital Carlos Haya, Málaga, Spain
| | - Ismael Herruzo
- Department of Radiation Oncology, Hospital Carlos Haya, Málaga, Spain
| | - Pedro C Lara
- Department of Radiation Oncology, Hospital Universitario Doctor Negrín, Gran Canaria, Spain
| | - Raquel Cabrera
- Department of Radiation Oncology, Hospital Universitario Doctor Negrín, Gran Canaria, Spain
| | - David Albillo
- Department of Radiology, Hospital Universitario de Salamanca, Salamanca, Spain
| | - Miguel Navarro
- Department of Medical Oncology, Hospital Universitario de Salamanca, Salamanca, Spain
| | | | - Antonio Revert
- Department of Radiology, Hospital de Manises, Valencia, Spain
| | - Estanislao Arana
- Department of Radiology, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - Víctor M Pérez-García
- Mathematical Oncology Laboratory (MôLAB), Department of Mathematics, Universidad de Castilla-La Mancha, 13071, Ciudad Real, Spain
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48
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Monge-Maillo B, Navarro M, Rodríguez E, Ramos Rincón JM, Chamorro Tojeiro S, Jiménez Sánchez S, Casas Del Corral MJ, López-Vélez R. Community screening campaign for Strongyloides stercoralis among Latin American immigrants in Spain. Clin Microbiol Infect 2018; 24:1220-1221. [PMID: 30017967 DOI: 10.1016/j.cmi.2018.06.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/27/2018] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
Affiliation(s)
- B Monge-Maillo
- National Referral Unit for Tropical Diseases, Infectious Diseases Department, Ramón y Cajal University Hospital, IRICYS, Madrid, Spain.
| | | | - E Rodríguez
- Parasitology Department: Nacional Referral Centre of Microbiology Instituto de Salud Carlos III, Madrid, Spain
| | - J M Ramos Rincón
- Department of Internal Medicine, University Hospital of Alicante, Medicine Department, Miguel Hernandez University of Elche, Alicante, Spain
| | - S Chamorro Tojeiro
- National Referral Unit for Tropical Diseases, Infectious Diseases Department, Ramón y Cajal University Hospital, IRICYS, Madrid, Spain
| | - S Jiménez Sánchez
- Parasitology Department: Nacional Referral Centre of Microbiology Instituto de Salud Carlos III, Madrid, Spain
| | - M J Casas Del Corral
- Parasitology Department: Nacional Referral Centre of Microbiology Instituto de Salud Carlos III, Madrid, Spain
| | - R López-Vélez
- National Referral Unit for Tropical Diseases, Infectious Diseases Department, Ramón y Cajal University Hospital, IRICYS, Madrid, Spain
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Abstract
Adrenal cortical insufficiency secondary to destruction of the cortex by a metastatic tumor is a rare condition. Addison's disease is usually caused by an autoimmune process or by a tuberculous infection. We report a case of adrenal Insufficiency as the first clinical manifestation of a metastatic prostate carcinoma that occurred simultaneously with an active pulmonary infection by M. tuberculosis.
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Affiliation(s)
- M Navarro
- Department of Internal Medicine, Granollers Hospital, Barcelona, Spain
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50
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Bellmunt J, Navarro M, Hidalgo R, Solé LA. Palmar-Plantar Erythrodysesthesia Syndrome Associated with Short-Term Continuous Infusion (5 Days) of 5-Fluorouracil. Tumori 2018; 74:329-31. [PMID: 3400123 DOI: 10.1177/030089168807400315] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A case of palmar-plantar erythrodysesthesia syndrome (PPES) observed during a 120-h infusion of 5-fluorouracil (5-FU) is presented. This syndrome has been described in the literature after protracted infusion chemotherapy of over 30 days. The agent most frequently associated with this syndrome was 5-FU. A 53-year-old man was admitted to the hospital with a well-differentiated squamous cell carcinoma of the retromolar trigone. The patient received 100 mg/m2 of cisplatin on day 1 and 120-h continuous infusion of 1000 mg/m2 of 5-FU every 3 weeks. After the second course, the patient developed clinical features consistant with PPES. This side effect has not been previously reported with short-term (5-day or 120-h) continuous infusion of 5-FU. Less frequently, the syndrome has also been described with 10-day continuous infusion. The etiopathogenesis of PPES is unclear, but it seems to be dose-dependent and probably related to cutaneous drug accumulation.
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Affiliation(s)
- J Bellmunt
- Department of Radiotherapy and Oncology, Valle Hebron Hospital, Barcelona, Spain
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