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Bandini P, Borràs N, Berrueco R, Gassiot S, Martin-Fernandez L, Sarrate E, Comes N, Ramírez L, Hobeich C, Vidal F, Corrales I. Gaining Insights into Inherited Bleeding Disorders of Complex Etiology in Pediatric Patients: Whole-Exome Sequencing as First-Line Investigation Tool. Thromb Haemost 2023. [PMID: 38158197 DOI: 10.1055/s-0043-1778070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
INTRODUCTION Investigation of the molecular basis of inherited bleeding disorders (IBD) is mostly performed with gene panel sequencing. However, the continuous discovery of new related genes underlies the limitation of this approach. This study aimed to identify genetic variants responsible for IBD in pediatric patients using whole-exome sequencing (WES), and to provide a detailed description and reclassification of candidate variants. MATERIAL AND METHODS WES was performed for 18 pediatric patients, and variants were filtered using a first-line list of 290 genes. Variant prioritization was discussed in a multidisciplinary team based on genotype-phenotype correlation, and segregation studies were performed with available family members. RESULTS The study identified 22 candidate variants in 17 out of 18 patients (94%). Eleven patients had complete genotype-phenotype correlation, resulting in a diagnostic yield of 61%, 5 (28%) were classified as partially solved, and 2 (11%) remained unsolved. Variants were identified in platelet (ACTN1, ANKRD26, CYCS, GATA1, GFI1B, ITGA2, NBEAL2, RUNX1, SRC, TUBB1), bleeding (APOLD1), and coagulation (F7, F8, F11, VWF) genes. Notably, 9 out of 22 (41%) variants were previously unreported. Variant pathogenicity was assessed according to the American College of Medical Genetics and Genomics guidelines and reclassification of three variants based on family segregation evidence, resulting in the identification of 10 pathogenic or likely pathogenic variants, 6 variants of uncertain significance, and 6 benign or likely benign variants. CONCLUSION This study demonstrated the high potential of WES in identifying rare molecular defects causing IBD in pediatric patients, improving their management, prognosis, and treatment, particularly for patients at risk of malignancy and/or bleeding due to invasive procedures.
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Affiliation(s)
- Perla Bandini
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
- Departament de Genètica, Microbiologia i Estadística, Universitat de Barcelona, Barcelona, Spain
| | - Nina Borràs
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Ruben Berrueco
- Servei d'Hematologia Pediàtrica, Hospital Sant Joan de Déu Barcelona, Institut de Recerca Pediàtrica, Hospital Sant Joan de Déu de Barcelona (IRP-HSJD), Universitat de Barcelona, Barcelona, Spain
- Instituto Nacional de Investigación Biomédica en Enfermedades Raras (CIBER ER), Instituto de Salud Carlos III, Madrid, Spain
| | - Susanna Gassiot
- Servei de Diagnòstic de Laboratori, Hospital Sant Joan de Déu Barcelona, Institut de Recerca Pediàtrica, Hospital Sant Joan de Déu de Barcelona (IRP-HSJD), Universitat de Barcelona, Barcelona, Spain
| | - Laura Martin-Fernandez
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Edurne Sarrate
- Servei de Diagnòstic de Laboratori, Hospital Sant Joan de Déu Barcelona, Institut de Recerca Pediàtrica, Hospital Sant Joan de Déu de Barcelona (IRP-HSJD), Universitat de Barcelona, Barcelona, Spain
| | - Natàlia Comes
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Lorena Ramírez
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Carlos Hobeich
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Francisco Vidal
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV). Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Irene Corrales
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Institut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV). Instituto de Salud Carlos III (ISCIII), Madrid, Spain
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Bandini P, Borràs N, Fernandez Mellid E, Martin-Fernandez L, Melero Valentín P, Comes N, Ramírez L, Cadahia Fernández P, Rodríguez Ruiz M, Perez Encinas MM, Vidal F, Corrales I. First description of bone marrow failure syndrome in Spain caused by mutations in the ERCC6L2 gene. Br J Haematol 2023; 203:e102-e107. [PMID: 37696499 DOI: 10.1111/bjh.19050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 09/13/2023]
Affiliation(s)
- Perla Bandini
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Insitut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
- Departament de Genètica, Microbiologia i Estadística, Universitat de Barcelona, Barcelona, Spain
| | - Nina Borràs
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Insitut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Eugenia Fernandez Mellid
- Servicio de Hematología, Hospital Clínico Universitario de Santiago de Compostela (CHUS-SERGAS), Santiago de Compostela, Spain
| | - Laura Martin-Fernandez
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Insitut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Paula Melero Valentín
- Servicio de Hematología, Hospital Clínico Universitario de Santiago de Compostela (CHUS-SERGAS), Santiago de Compostela, Spain
| | - Natalia Comes
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Insitut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Lorena Ramírez
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Insitut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Patricia Cadahia Fernández
- Servicio de Hematología, Hospital Clínico Universitario de Santiago de Compostela (CHUS-SERGAS), Santiago de Compostela, Spain
| | - Matilde Rodríguez Ruiz
- Servicio de Hematología, Hospital Clínico Universitario de Santiago de Compostela (CHUS-SERGAS), Santiago de Compostela, Spain
| | - Manuel Mateo Perez Encinas
- Servicio de Hematología, Hospital Clínico Universitario de Santiago de Compostela (CHUS-SERGAS), Santiago de Compostela, Spain
| | - Francisco Vidal
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Insitut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Irene Corrales
- Laboratori de Coagulopaties Congènites, Banc de Sang i Teixits, Barcelona, Spain
- Medicina Transfusional, Vall d'Hebron Insitut de Recerca, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
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3
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Cuesta-Borràs E, Salvans C, Arqués O, Chicote I, Ramírez L, Cabellos L, Martínez-Quintanilla J, Mur-Espinosa A, García-Álvarez A, Hernando J, Tejedor JR, Mirallas O, Élez E, Fraga MF, Tabernero J, Nuciforo P, Capdevila J, Palmer HG, Puig I. DPPA3-HIF1α axis controls colorectal cancer chemoresistance by imposing a slow cell-cycle phenotype. Cell Rep 2023; 42:112927. [PMID: 37537841 DOI: 10.1016/j.celrep.2023.112927] [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: 12/29/2022] [Revised: 06/22/2023] [Accepted: 07/17/2023] [Indexed: 08/05/2023] Open
Abstract
Tumor relapse is linked to rapid chemoresistance and represents a bottleneck for cancer therapy success. Engagement of a reduced proliferation state is a non-mutational mechanism exploited by cancer cells to bypass therapy-induced cell death. Through combining functional pulse-chase experiments in engineered cells and transcriptomic analyses, we identify DPPA3 as a master regulator of slow-cycling and chemoresistant phenotype in colorectal cancer (CRC). We find a vicious DPPA3-HIF1α feedback loop that downregulates FOXM1 expression via DNA methylation, thereby delaying cell-cycle progression. Moreover, downregulation of HIF1α partially restores a chemosensitive proliferative phenotype in DPPA3-overexpressing cancer cells. In cohorts of CRC patient samples, DPPA3 overexpression acts as a predictive biomarker of chemotherapeutic resistance that subsequently requires reduction in its expression to allow metastatic outgrowth. Our work demonstrates that slow-cycling cancer cells exploit a DPPA3/HIF1α axis to support tumor persistence under therapeutic stress and provides insights on the molecular regulation of disease progression.
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Affiliation(s)
- Estefania Cuesta-Borràs
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | - Cándida Salvans
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain; University of Barcelona, Barcelona, Spain
| | - Oriol Arqués
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | - Irene Chicote
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain; CIBERONC, 08029 Madrid, Spain
| | - Lorena Ramírez
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Vall d'Hebron Institute of Oncology (VHIO), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain
| | - Laia Cabellos
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | | | - Alex Mur-Espinosa
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain; University of Barcelona, Barcelona, Spain
| | - Alejandro García-Álvarez
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Vall d'Hebron Institute of Oncology (VHIO), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain
| | - Jorge Hernando
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Vall d'Hebron Institute of Oncology (VHIO), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain
| | - Juan Ramón Tejedor
- Nanomaterials and Nanotechnology Research Center (CINN), Spanish National Research Council (CSIC), Health Research Institute of the Principality of Asturias (ISPA), Spanish Biomedical Research Network in Rare Diseases (CIBERER), Institute of Oncology of Asturias (IUOPA), University of Oviedo, 33011 Oviedo, Asturias, Spain
| | - Oriol Mirallas
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Vall d'Hebron Institute of Oncology (VHIO), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain
| | - Elena Élez
- CIBERONC, 08029 Madrid, Spain; Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Vall d'Hebron Institute of Oncology (VHIO), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain
| | - Mario F Fraga
- Nanomaterials and Nanotechnology Research Center (CINN), Spanish National Research Council (CSIC), Health Research Institute of the Principality of Asturias (ISPA), Spanish Biomedical Research Network in Rare Diseases (CIBERER), Institute of Oncology of Asturias (IUOPA), University of Oviedo, 33011 Oviedo, Asturias, Spain
| | - Josep Tabernero
- CIBERONC, 08029 Madrid, Spain; Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Vall d'Hebron Institute of Oncology (VHIO), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain; UVic-UCC, IOB-Quiron, 08023 Barcelona, Spain
| | - Paolo Nuciforo
- CIBERONC, 08029 Madrid, Spain; Molecular Oncology Group, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | - Jaume Capdevila
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Vall d'Hebron Institute of Oncology (VHIO), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain; IOB-Teknon, 08023 Barcelona, Spain
| | - Héctor G Palmer
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain; CIBERONC, 08029 Madrid, Spain.
| | - Isabel Puig
- Stem Cells and Cancer Laboratory, Vall d'Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain; CIBERONC, 08029 Madrid, Spain.
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López V, Ramírez L, López-Concha R, Ascorra P, Álvarez JP, Carrasco-Aguilar C, Jervis P, Squicciarini AM, Simonsohn A, Contreras T, Opazo H. Wellbeing of School Communities in the Context of COVID-19 Pandemic: A Qualitative Study in Chilean Low-SES Schools. Front Psychol 2022; 13:853057. [PMID: 35478757 PMCID: PMC9036095 DOI: 10.3389/fpsyg.2022.853057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/14/2022] [Indexed: 11/15/2022] Open
Abstract
The COVID-19 pandemic continues to impact schools and how education is conveyed to students. One of the aspects that has gained strength is supporting the wellbeing of educational communities. The purpose of this study was to describe and understand the construction of school wellbeing during the pandemic, based on the notion of collective and sustainable wellbeing. Through a qualitative design, we conducted a study in four Chilean low-SES schools in which a national school mental health program is implemented. A total of 41 in-depth interviews and one group interview were conducted with students, parents, teacher, teacher assistants, school principals, psychosocial professionals, and the school mental health officers during the second half of the 2020 school year. Thematic content analyses showed that, while facing the school closure challenges, schools strived to protect students’ and teachers’ wellbeing. However, participants highlighted necessary conditions for sustaining the school community’s wellbeing and mental health in the context of the COVID-19 pandemic: assuring digital connectivity for all students; coordinated work with families and within the school; strengthening networks; curriculum adaptation and diversified pedagogical strategies; and emotional support toward teachers, families, and students. We discuss these findings and their implications for a sustainable and collective perspective of the wellbeing of school communities in low-SES schools, as well as for policy, practice, and research from the perspective of schools for social justice and health promotion.
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Affiliation(s)
- Verónica López
- School of Psychology, Faculty of Philosophy and Education, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Center for Research in Inclusive Education, Viña del Mar, Chile
- *Correspondence: Verónica López,
| | - Lorena Ramírez
- Faculty of Health and Social Sciences, Universidad de Las Américas, Santiago, Chile
| | - Romina López-Concha
- School of Psychology, Faculty of Philosophy and Education, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Paula Ascorra
- School of Psychology, Faculty of Philosophy and Education, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Center for Research in Inclusive Education, Viña del Mar, Chile
| | - Juan Pablo Álvarez
- School of Psychology, Faculty of Philosophy and Education, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Center for Research in Inclusive Education, Viña del Mar, Chile
| | - Claudia Carrasco-Aguilar
- Department of Mediations and Subjectivities, Faculty of Social Science, Universidad de Playa Ancha, Valparaíso, Chile
| | - Pamela Jervis
- Center for Research in Inclusive Education, Viña del Mar, Chile
- Department of Industrial Engineering, Faculty of Physical Sciences and Mathematics, Universidad de Chile, Santiago, Chile
- Millennium Institute for Research in Market Imperfections and Public Policy, Universidad de Chile, Santiago, Chile
- Institute for Fiscal Studies, London, United Kingdom
| | | | - Ariela Simonsohn
- Department of Programs, Junta Nacional de Auxílio Escolar y Becas, Santiago, Chile
| | - Tabata Contreras
- School of Psychology, Faculty of Philosophy and Education, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Héctor Opazo
- School of Psychology, Faculty of Philosophy and Education, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Center for Research in Inclusive Education, Viña del Mar, Chile
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Herpers B, Eppink B, James MI, Cortina C, Cañellas-Socias A, Boj SF, Hernando-Momblona X, Glodzik D, Roovers RC, van de Wetering M, Bartelink-Clements C, Zondag-van der Zande V, Mateos JG, Yan K, Salinaro L, Basmeleh A, Fatrai S, Maussang D, Lammerts van Bueren JJ, Chicote I, Serna G, Cabellos L, Ramírez L, Nuciforo P, Salazar R, Santos C, Villanueva A, Stephan-Otto Attolini C, Sancho E, Palmer HG, Tabernero J, Stratton MR, de Kruif J, Logtenberg T, Clevers H, Price LS, Vries RGJ, Batlle E, Throsby M. Functional patient-derived organoid screenings identify MCLA-158 as a therapeutic EGFR × LGR5 bispecific antibody with efficacy in epithelial tumors. Nat Cancer 2022; 3:418-436. [PMID: 35469014 DOI: 10.1038/s43018-022-00359-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 03/04/2022] [Indexed: 12/19/2022]
Abstract
Patient-derived organoids (PDOs) recapitulate tumor architecture, contain cancer stem cells and have predictive value supporting personalized medicine. Here we describe a large-scale functional screen of dual-targeting bispecific antibodies (bAbs) on a heterogeneous colorectal cancer PDO biobank and paired healthy colonic mucosa samples. More than 500 therapeutic bAbs generated against Wingless-related integration site (WNT) and receptor tyrosine kinase (RTK) targets were functionally evaluated by high-content imaging to capture the complexity of PDO responses. Our drug discovery strategy resulted in the generation of MCLA-158, a bAb that specifically triggers epidermal growth factor receptor degradation in leucine-rich repeat-containing G-protein-coupled receptor 5-positive (LGR5+) cancer stem cells but shows minimal toxicity toward healthy LGR5+ colon stem cells. MCLA-158 exhibits therapeutic properties such as growth inhibition of KRAS-mutant colorectal cancers, blockade of metastasis initiation and suppression of tumor outgrowth in preclinical models for several epithelial cancer types.
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Affiliation(s)
- Bram Herpers
- OcellO BV, Leiden, The Netherlands
- Crown Bioscience Netherlands BV, Leiden, The Netherlands
| | | | - Mark I James
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Carme Cortina
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain
- CIBERONC, Madrid, Spain
| | - Adrià Cañellas-Socias
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain
- CIBERONC, Madrid, Spain
| | - Sylvia F Boj
- Hubrecht Organoid Technology (HUB), Utrecht, the Netherlands
| | - Xavier Hernando-Momblona
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain
- CIBERONC, Madrid, Spain
| | - Dominik Glodzik
- Wellcome Sanger Institute, Hinxton, UK
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | | | - Marc van de Wetering
- Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, Utrecht, the Netherlands
- Oncode Institute, Hubrecht Institute, Utrecht, the Netherlands
| | | | | | - Jara García Mateos
- OcellO BV, Leiden, The Netherlands
- Crown Bioscience Netherlands BV, Leiden, The Netherlands
| | - Kuan Yan
- OcellO BV, Leiden, The Netherlands
- Crown Bioscience Netherlands BV, Leiden, The Netherlands
| | | | | | | | | | | | - Irene Chicote
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Garazi Serna
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Laia Cabellos
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
- Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Barcelona, Spain
| | - Lorena Ramírez
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
- Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Barcelona, Spain
| | - Paolo Nuciforo
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - Ramon Salazar
- Department of Medical Oncology, Catalan Institute of Oncology (ICO), Oncobell Program, Bellvitge Biomedical Research Institute (IDIBELL)-CIBERONC, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Cristina Santos
- Department of Medical Oncology, Catalan Institute of Oncology (ICO), Oncobell Program, Bellvitge Biomedical Research Institute (IDIBELL)-CIBERONC, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Alberto Villanueva
- Chemoresistance and Predictive Factors Group, Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology (ICO), Oncobell Program, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet del Llobregat, Barcelona, Spain
- Xenopat SL, Parc Cientific de Barcelona (PCB), Barcelona, Spain
| | - Camille Stephan-Otto Attolini
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Elena Sancho
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain
- CIBERONC, Madrid, Spain
| | - Hector G Palmer
- CIBERONC, Madrid, Spain
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
- Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Barcelona, Spain
| | - Josep Tabernero
- CIBERONC, Madrid, Spain
- Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
- Medical Oncology Department, Vall d'Hebron University Hospital (HUVH), Barcelona, Spain
| | | | | | | | - Hans Clevers
- Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, Utrecht, the Netherlands
- Oncode Institute, Hubrecht Institute, Utrecht, the Netherlands
| | - Leo S Price
- OcellO BV, Leiden, The Netherlands
- Crown Bioscience Netherlands BV, Leiden, The Netherlands
| | | | - Eduard Batlle
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology, Barcelona, Spain.
- CIBERONC, Madrid, Spain.
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain.
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Serrano J, López-Pintor RM, Ramírez L, Fernández-Castro M, Sanz M, Melchor S, Peiteado D, Hernández G. Risk factors related to oral candidiasis in patients with primary Sjögren's syndrome. Med Oral Patol Oral Cir Bucal 2020; 25:e700-e705. [PMID: 32683379 PMCID: PMC7473438 DOI: 10.4317/medoral.23719] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 07/02/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Candidiasis is the most frequent mycotic infection of the oral cavity. The aim of this study was to investigate the presence of clinical oral candidiasis and Candida albicans yeast in a population diagnosed of primary Sjögren's syndrome (pSS) and to study the possible factors associated with this infection. MATERIAL AND METHODS An observational cross-sectional study was conducted in 61 pSS patients (60 women, 1 man, mean age 57.64±13.52) where patient based information (demographic and medical, tobacco and alcohol consumption history), intraoral parameters (presence of dentures, clinical signs of candidiasis), salivary analytical information (number of Candida albicans as colony-forming units per millilitre (CFU/mL), salivary pH levels, unstimulated whole saliva (UWS) and stimulated whole saliva (SWS) were collected. RESULTS 13.1% of pSS patients presented oral signs of candidiasis. Denture stomatitis and angular cheilitis were the most common lesions. 87.5% of patients with clinical candidiasis presented reduced pH levels and salivary flow in both UWS and SWS. A significant statistical negative correlation was found between CFU/mL of Candida albicans and levels of UWS and SWS. A negative correlation was found between pH levels and CFU/mL, although not statistically significant. CONCLUSIONS A reduced salivary flow may predispose pSS patients to Candida albicans overgrowth, which may show with clinical signs. Preventive measures are of great importance to avoid and to treat this condition promptly.
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Affiliation(s)
- J Serrano
- Departamento de Especialidades Clínicas Odontológicas Facultad de Odontología Universidad Complutense de Madrid Plaza Ramón y Cajal s/n, 28040 Madrid. Spain
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Haridas S, Albert R, Binder M, Bloem J, LaButti K, Salamov A, Andreopoulos B, Baker SE, Barry K, Bills G, Bluhm BH, Cannon C, Castanera R, Culley DE, Daum C, Ezra D, González JB, Henrissat B, Kuo A, Liang C, Lipzen A, Lutzoni F, Magnuson J, Mondo SJ, Nolan M, Ohm RA, Pangilinan J, Park HJ, Ramírez L, Alfaro M, Sun H, Tritt A, Yoshinaga Y, Zwiers LH, Turgeon BG, Goodwin SB, Spatafora JW, Crous PW, Grigoriev IV. 101 Dothideomycetes genomes: A test case for predicting lifestyles and emergence of pathogens. Stud Mycol 2020; 96:141-153. [PMID: 32206138 PMCID: PMC7082219 DOI: 10.1016/j.simyco.2020.01.003] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Dothideomycetes is the largest class of kingdom Fungi and comprises an incredible diversity of lifestyles, many of which have evolved multiple times. Plant pathogens represent a major ecological niche of the class Dothideomycetes and they are known to infect most major food crops and feedstocks for biomass and biofuel production. Studying the ecology and evolution of Dothideomycetes has significant implications for our fundamental understanding of fungal evolution, their adaptation to stress and host specificity, and practical implications with regard to the effects of climate change and on the food, feed, and livestock elements of the agro-economy. In this study, we present the first large-scale, whole-genome comparison of 101 Dothideomycetes introducing 55 newly sequenced species. The availability of whole-genome data produced a high-confidence phylogeny leading to reclassification of 25 organisms, provided a clearer picture of the relationships among the various families, and indicated that pathogenicity evolved multiple times within this class. We also identified gene family expansions and contractions across the Dothideomycetes phylogeny linked to ecological niches providing insights into genome evolution and adaptation across this group. Using machine-learning methods we classified fungi into lifestyle classes with >95 % accuracy and identified a small number of gene families that positively correlated with these distinctions. This can become a valuable tool for genome-based prediction of species lifestyle, especially for rarely seen and poorly studied species.
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Key Words
- Aulographales Crous, Spatafora, Haridas & Grigoriev
- Coniosporiaceae Crous, Spatafora, Haridas & Grigoriev
- Coniosporiales Crous, Spatafora, Haridas & Grigoriev
- Eremomycetales Crous, Spatafora, Haridas & Grigoriev
- Fungal evolution
- Genome-based prediction
- Lineolataceae Crous, Spatafora, Haridas & Grigoriev
- Lineolatales Crous, Spatafora, Haridas & Grigoriev
- Machine-learning
- New taxa
- Rhizodiscinaceae Crous, Spatafora, Haridas & Grigoriev
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Affiliation(s)
- S Haridas
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - R Albert
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, USA
| | - M Binder
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - J Bloem
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - K LaButti
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - A Salamov
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - B Andreopoulos
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - S E Baker
- Functional and Systems Biology Group, Environmental Molecular Sciences Division, Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington, USA
| | - K Barry
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - G Bills
- University of Texas Health Science Center, Houston, TX, USA
| | - B H Bluhm
- University of Arkansas, Fayelletville, AR, USA
| | - C Cannon
- Texas Tech University, Lubbock, TX, USA
| | - R Castanera
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Institute for Multidisciplinary Research in Applied Biology (IMAB-UPNA), Universidad Pública de Navarra, Pamplona, Navarra, Spain
| | - D E Culley
- Functional and Systems Biology Group, Environmental Molecular Sciences Division, Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington, USA
| | - C Daum
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - D Ezra
- Agricultural Research Organization, Volcani Center, Rishon LeTsiyon, Israel
| | - J B González
- Section of Plant Pathology and Plant-Microbe Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - B Henrissat
- CNRS, Aix-Marseille Université, Marseille, France.,INRA, Marseille, France.,Department of Biological Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - A Kuo
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - C Liang
- College of Agronomy and Plant Protection, Qingdao Agricultural University, China
| | - A Lipzen
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - F Lutzoni
- Department of Biology, Duke University, Durham, NC, USA
| | - J Magnuson
- Functional and Systems Biology Group, Environmental Molecular Sciences Division, Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington, USA
| | - S J Mondo
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Bioagricultural Science and Pest Management Department, Colorado State University, Fort Collins, CO, USA
| | - M Nolan
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - R A Ohm
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Microbiology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - J Pangilinan
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - H-J Park
- Section of Plant Pathology and Plant-Microbe Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - L Ramírez
- Institute for Multidisciplinary Research in Applied Biology (IMAB-UPNA), Universidad Pública de Navarra, Pamplona, Navarra, Spain
| | - M Alfaro
- Institute for Multidisciplinary Research in Applied Biology (IMAB-UPNA), Universidad Pública de Navarra, Pamplona, Navarra, Spain
| | - H Sun
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - A Tritt
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Y Yoshinaga
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - L-H Zwiers
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands
| | - B G Turgeon
- Section of Plant Pathology and Plant-Microbe Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - S B Goodwin
- U.S. Department of Agriculture-Agricultural Research Service, 915 W. State Street, West Lafayette, IN, USA
| | - J W Spatafora
- Department of Botany & Plant Pathology, Oregon State University, Oregon State University, Corvallis, OR, USA
| | - P W Crous
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands.,Microbiology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - I V Grigoriev
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, USA
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8
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Serrano J, López-Pintor RM, Fernández-Castro M, Ramírez L, Sanz M, Casañas E, García JA, Recuero S, Bohorquez C, Hernández G. Oral lesions in patients with primary Sjögren's syndrome. A case-control cross-sectional study. Med Oral Patol Oral Cir Bucal 2020; 25:e137-e143. [PMID: 31880282 PMCID: PMC6982992 DOI: 10.4317/medoral.23254] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 06/04/2019] [Accepted: 07/07/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND To evaluate the presence of oral lesions in a group of patients with primary Sjögren's syndrome (pSS) and compare these results with a matched control group (CG). MATERIAL AND METHODS An observational cross-sectional study was conducted. 61 pSS patients (60 women, 1 man, mean age 57.64±13.52) diagnosed according to the American European Criteria (2002), and 122 matched control patients (120 women, 2 men, mean age 60.02±13.13) were included. Demographic and medical data, oral lesions and salivary flow rate were collected. RESULTS Compared with the controls, pSS patients were 3.95 more likely to have oral lesions (OR 3.95; 95% CI 2.06-7.58; p=0.0001). 57.4% pSS patients presented oral lesions compared to 25.4% in CG. The most common were candidiasis (13.1% vs 2.5%), traumatic lesions (13.1% vs 4.1%), apthae (8.2% vs 0), and fissuration of the tongue (8.2% vs 0.8%). pSS patients with oral lesions had lower salivary flow levels (stimulated and unstimulated), although these differences were not significant. Significant associations were found between the presence of oral lesions and systemic manifestations and history of parotid gland enlargement in pSS patients. CONCLUSION pSS patients suffer more oral lesions than general population and these lesions may aggravate the pSS disease.
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Affiliation(s)
- J Serrano
- Departamento de Especialidades Clínicas Odontológicas Facultad de Odontología Universidad Complutense de Madrid Plaza Ramón y Cajal s/n, 28040 Madrid. Spain
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9
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Jiménez Maldonado (Coordinador) A, González González K, Huerta Plaza B, Amaya Parra G, Avendaño Cano D, Gómez Miranda L, Aburto Corona J, Baños R, Ortiz-Camacho M, Baena-Extremera A, Granero-Gallegos A, Machado-Parra J, Rentería I, Acosta I, Ramírez L, Cervantes-Hernández N, Hernández Nájera N, Enríquez del Castillo L, Carrasco-Legleu C, Candia Luján R, Flores-Chico B, Flores-Flores A, López de la Rosa L, Aguilar-Enríquez R, Caballero Gómez J, Villanueva-Huerta J, Bañuelos-Teres L, Buendía Lozada E, Moranchel-Charros R, Martínez-Velázquez E, Ortiz Ortiz M, Espinoza Gutiérrez R, Gómez Miranda L, Guzmán Gutiérrez E, Calleja Núñez J, Vega-Orozco S, Gavotto Nogales O, Bernal Reyes F, Horta Gim M, Sarabia Sainz H. SUPLEMENTO DEL XV CONGRESO INTERNACIONAL DE ACTIVIDAD FÍSICA Y DEPORTE. 17,18 y 19 DE OCTUBRE DEL 2018. ENSENADA, BAJA CALIFORNIA, MÉXICO. RICCAFD 2019. [DOI: 10.24310/riccafd.2019.v8i2.6696] [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: 11/19/2022] Open
Abstract
Compendio, en formato artículo, de los mejores trabajos presentados en el XV CONGRESO INTERNACIONAL DE ACTIVIDAD FÍSICA Y DEPORTE celebrado los días 17,18 y 19 de octubre del 2018 en la Universidad Autónoma de Baja California en la ciudad de Ensenada, Baja California, México:La nutrición en la actividad física y deportiva: alimentos funcionales con nanotecnología, aplicaciones potenciales. González González, K.Y.; Huerta Plaza, B.A.; Amaya Parra, G. (118-130)Perfil antropométrico, físico y hábitos alimentarios en escolares indígenas de Tijuana México. Avendaño Cano, D.L.; Gómez Miranda, L.M.; Aburto Corona, J.A. (131-142)Relación entre el clima de aprendizaje en Educación Física y la percepción de los estudiantes en las competencias del profesorado. Baños, R; Ortiz-Camacho, M.M.; Baena-Extremera, A.; Granero-Gallegos, A.; Machado-Parra, J.P.; Rentería, I.; Acosta, I.; Ramírez, L. (143-153)Valoración de capacidades físicas, composición corporal y consumo de vitaminas en una competencia de Crossfit. Cervantes-Hernández, N.; Hernández Nájera, N.; Carrasco Legleu, C.E.; Candia Lujan, R.; Enríquez Del Castillo, L.A. (154-164)Relación de la actividad física, características antropométricas y VO2máx en jóvenes universitarios: características por género. Enríquez-del Castillo, L.A.; Cervantes-Hernández, N.; Carrasco-Legleu, C.E.; Candia Luján, R. (165-174)Entrenamiento vibratorio de cuerpo completo y sus efectos sobre la composición corporal en jóvenes universitarios. Flores-Chico, B.; Bañuelos-Teres, L.E.; Buendía Lozada, E.R.P. (175-183)Actualización curricular, plan 2016 de la Licenciatura en Cultura Física de la BUAP. Flores-Chico, B.; Flores-Flores, A.; López de La Rosa, LE.; Aguilar-Enríquez, R.I.; Caballero Gómez, JM; Villanueva-Huerta, JA. (184-192)Evaluación psicológica y de la musculatura isquiosural de basquetbolistas universitarias en distintas etapas deportivas. Moranchel-Charros, R.; Martínez-Velázquez, E.S. (193-203)Efecto del ejercicio físico sobre la fuerza, resistencia y riesgo de caída en mujeres adultas. Ortiz Ortiz, M; Espinoza Gutiérrez, R; Gómez Miranda, LM.; Guzmán Gutiérrez, EC.; Calleja Núñez, JJ. (204-212)Desigualdad vs igualdad numérica y su efecto en la técnica de jugadores de fútbol infantil. Vega-Orozco, SI; Gavotto Nogales, OI; Bernal Reyes, F; Horta Gim, MA; Sarabia Sainz, HM. (213-224)
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10
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Vallina C, Ramírez L, Torres J, Casañas E, Hernández G, López-Pintor RM. Osteonecrosis of the jaws produced by sunitinib: a systematic review. Med Oral Patol Oral Cir Bucal 2019; 24:e326-e338. [PMID: 31011143 PMCID: PMC6530944 DOI: 10.4317/medoral.22858] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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] [Received: 08/22/2018] [Accepted: 12/22/2018] [Indexed: 02/05/2023] Open
Abstract
Background Tyrosine kinase receptor family is involved in tumor growth, pathological angiogenesis and the progression (metastasis) of cancer. Sunitinib (Sutent®) inhibits members of the tyrosine kinase receptor family affecting the induction of angiogenesis and tumor progression. It is not clear if sunitinib increases the risk of osteonecrosis of the jaws (ONJ). The aim of this study was to carry out a systematic review about ONJ related to sunitinib, describing existing cases and possible associated risk factors. Material and Methods The PubMed/MEDLINE and Cochrane Library databases were searched without date restriction up to September 2018. We included prospective and retrospective observational studies, cross-sectional studies, clinical cases and series of cases, involving only human subjects. The methodological quality of the studies was assessed using The Joanna Briggs Institute (JBI) and Newcastle-Ottawa tools. Results A total of 13 studies fulfilled our inclusion criteria of which 7 were clinical cases, 5 case series and a retrospective study. All the articles were published between 2009 and 2018. Of the 102 patients treated with sunitinib analyzed in this study, 58 developed ONJ, being or having been treated with sunitinib and bisphosphonates or exclusively with sunitinib. Conclusions In this systematic review, we found an increase of ONJ in patients who are medicated with other drugs different than bisphosphonates and denosumab. It is necessary that dentists, oral and maxillofacial surgeons as well as oncologists know the risk of ONJ that these antiresorptive drugs could have. There is a need to continue researching in this field with the aim of an increasing knowledge in this area and creating an adequate protocol of action for this population. Key words:Medication-related osteonecrosis of the jaws, osteonecrosis of the jaws, sunitinib, systematic review.
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Affiliation(s)
- C Vallina
- Departamento de Especialidades Clínicas Odontológicas, Facultad de Odontología, Universidad Complutense de Madrid, Plaza Ramón y Cajal S/N 28040-Madrid, Spain,
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11
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Chang Kee J, Gonzales MJ, Ponce O, Ramírez L, León V, Torres A, Corpus M, Loayza-Muro R. Accumulation of heavy metals in native Andean plants: potential tools for soil phytoremediation in Ancash (Peru). Environ Sci Pollut Res Int 2018; 25:33957-33966. [PMID: 30280335 DOI: 10.1007/s11356-018-3325-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 11/16/2017] [Accepted: 09/24/2018] [Indexed: 06/08/2023]
Abstract
Metal contamination is a recurring problem in Peru, caused mainly by mine tailings from a past active mining activity. The Ancash region has the largest number of environmental liabilities, which mobilizes high levels of metals and acid drainages into soils and freshwater sources, posing a standing risk on human and environmental health. Native plant species spontaneously growing on naturally acidified soils and acid mine tailings show a unique tolerance to high metal concentrations and are thus potential candidates for soil phytoremediation. However, little is known about their propagation capacity and metal accumulation under controlled conditions. In this study, we aimed at characterizing nine native plant species, previously identified as potential hyperaccumulators, from areas impacted by mine tailings in the Ancash region. Plants were grown on mine soils under greenhouse conditions during 5 months, after which the concentration of Cd, Cu, Ni, Pb, and Zn was analyzed in roots, shoots, and soils. The bioaccumulation (BAF) and translocation factor (TF) were calculated to determine the amount of each metal accumulated in the roots and shoots and to identify which species could be better suited for phytoremediation purposes. Soil samples contained high Cd (6.50-49.80 mg/kg), Cu (159.50-1187.00 mg/kg), Ni (3.50-8.70 mg/kg), Pb (1707.00-4243.00 mg/kg), and Zn (909.00-7100.00 mg/kg) concentrations exceeding national environmental quality standards. After exposure to mine tailings, concentrations of metals in shoots were highest in Werneria nubigena (Cd, 16.68 mg/kg; Cu, 41.36 mg/kg; Ni, 26.85 mg/kg; Zn, 1691.03 mg/kg), Pennisetum clandestinum (Pb, 236.86 mg/kg), and Medicago lupulina (Zn, 1078.10 mg/kg). Metal concentrations in the roots were highest in Juncus bufonius (Cd, 34.34 mg/kg; Cu, 251.07 mg/kg; Ni, 6.60 mg/kg; Pb, 718.44 mg/kg) and M. lupulina (Zn, 2415.73 mg/kg). The greatest BAF was calculated for W. nubigena (Cd, 1.92; Cu, 1.20; Ni, 6.50; Zn, 3.50) and J. bufonius (Ni, 3.02; Zn, 1.30); BCF for Calamagrostis recta (Cd, 1.09; Cu, 1.80; Ni, 1.09), J. bufonius (Cd, 3.91; Cu, 1.79; Ni, 18.36), and Achyrocline alata (Ni, 137; Zn, 1.85); and TF for W. nubigena (Cd, 2.36; Cu, 1.70; Ni, 2.42; Pb, 1.17; Zn, 1.43), A. alata (Cd, 1.14; Pb, 1.94), J. bufonius (Ni, 2.72; Zn, 1.63), and P. clandestinum (Zn, 1.14). Our results suggest that these plant species have a great potential for soil phytoremediation, given their capability to accumulate and transfer metals and their tolerance to highly metal-polluted environments in the Andean region.
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Affiliation(s)
- José Chang Kee
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430 SMP, Lima, Peru.
| | - María J Gonzales
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430 SMP, Lima, Peru
| | - Olga Ponce
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430 SMP, Lima, Peru
| | - Lorena Ramírez
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430 SMP, Lima, Peru
| | - Vladimir León
- Universidad Nacional Santiago Antúnez de Mayolo, Av. Centenario 200, Huaraz, Peru
| | - Adelia Torres
- Universidad Nacional Santiago Antúnez de Mayolo, Av. Centenario 200, Huaraz, Peru
| | - Melissa Corpus
- Universidad Nacional Santiago Antúnez de Mayolo, Av. Centenario 200, Huaraz, Peru
| | - Raúl Loayza-Muro
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Av. Honorio Delgado 430 SMP, Lima, Peru
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12
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Puig I, Tenbaum SP, Chicote I, Arqués O, Martínez-Quintanilla J, Cuesta-Borrás E, Ramírez L, Gonzalo P, Soto A, Aguilar S, Eguizabal C, Caratù G, Prat A, Argilés G, Landolfi S, Casanovas O, Serra V, Villanueva A, Arroyo AG, Terracciano L, Nuciforo P, Seoane J, Recio JA, Vivancos A, Dienstmann R, Tabernero J, Palmer HG. TET2 controls chemoresistant slow-cycling cancer cell survival and tumor recurrence. J Clin Invest 2018; 128:3887-3905. [PMID: 29944140 DOI: 10.1172/jci96393] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 06/19/2018] [Indexed: 12/13/2022] Open
Abstract
Dormant or slow-cycling tumor cells can form a residual chemoresistant reservoir responsible for relapse in patients, years after curative surgery and adjuvant therapy. We have adapted the pulse-chase expression of H2BeGFP for labeling and isolating slow-cycling cancer cells (SCCCs). SCCCs showed cancer initiation potential and enhanced chemoresistance. Cells at this slow-cycling status presented a distinctive nongenetic and cell-autonomous gene expression profile shared across different tumor types. We identified TET2 epigenetic enzyme as a key factor controlling SCCC numbers, survival, and tumor recurrence. 5-Hydroxymethylcytosine (5hmC), generated by TET2 enzymatic activity, labeled the SCCC genome in carcinomas and was a predictive biomarker of relapse and survival in cancer patients. We have shown the enhanced chemoresistance of SCCCs and revealed 5hmC as a biomarker for their clinical identification and TET2 as a potential drug target for SCCC elimination that could extend patients' survival.
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Affiliation(s)
- Isabel Puig
- Stem Cells and Cancer Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Stephan P Tenbaum
- Stem Cells and Cancer Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Irene Chicote
- Stem Cells and Cancer Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Oriol Arqués
- Stem Cells and Cancer Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | | | | | - Lorena Ramírez
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Pilar Gonzalo
- Matrix Metalloproteinases in Angiogenesis and Inflammation Group, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Atenea Soto
- Gene Expression and Cancer Group, Vall d'Hebron Institute of Oncology, Vall d'Hebron University Hospital, Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain.,Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Susana Aguilar
- Tumor Angiogenesis Group, Institut d'Investigació Biomèdica de Bellvitge, Barcelona, Spain
| | - Cristina Eguizabal
- Cell Therapy and Stem Cell Group, Basque Centre for Transfusion and Human Tissues, Galdakao, Spain
| | - Ginevra Caratù
- Cancer Genomics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Aleix Prat
- Translational Genomics and Targeted Therapeutics in Solid Tumors, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Medical Oncology Department, Hospital Clínic, Universitat de Barcelona, Translational Genomics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Guillem Argilés
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Stefania Landolfi
- Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Department of Pathology, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Oriol Casanovas
- Tumor Angiogenesis Group, Institut d'Investigació Biomèdica de Bellvitge, Barcelona, Spain
| | - Violeta Serra
- Experimental Therapeutics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Alberto Villanueva
- Chemoresistance Group, Institut d'Investigació Biomèdica de Bellvitge, Barcelona, Spain
| | - Alicia G Arroyo
- Matrix Metalloproteinases in Angiogenesis and Inflammation Group, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Luigi Terracciano
- Molecular Pathology Division, Institute of Pathology, University Hospital, Basel, Switzerland
| | - Paolo Nuciforo
- Molecular Oncology Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Joan Seoane
- Gene Expression and Cancer Group, Vall d'Hebron Institute of Oncology, Vall d'Hebron University Hospital, Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain.,Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Juan A Recio
- Animal Models and Cancer Laboratory, Melanoma Program, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Ana Vivancos
- Cancer Genomics Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Rodrigo Dienstmann
- Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Oncology Data Science (ODysSey) Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | - Josep Tabernero
- Gastrointestinal and Endocrine Tumors Group, Medical Oncology Department, Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Héctor G Palmer
- Stem Cells and Cancer Group, Vall d'Hebron Institute of Oncology, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
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Martin-Fernandez L, Gavidia-Bovadilla G, Corrales I, Brunel H, Ramírez L, López S, Souto JC, Vidal F, Soria JM. Next generation sequencing to dissect the genetic architecture of KNG1 and F11 loci using factor XI levels as an intermediate phenotype of thrombosis. PLoS One 2017; 12:e0176301. [PMID: 28445521 PMCID: PMC5405990 DOI: 10.1371/journal.pone.0176301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 04/07/2017] [Indexed: 01/25/2023] Open
Abstract
Venous thromboembolism is a complex disease with a high heritability. There are significant associations among Factor XI (FXI) levels and SNPs in the KNG1 and F11 loci. Our aim was to identify the genetic variation of KNG1 and F11 that might account for the variability of FXI levels. The KNG1 and F11 loci were sequenced completely in 110 unrelated individuals from the GAIT-2 (Genetic Analysis of Idiopathic Thrombophilia 2) Project using Next Generation Sequencing on an Illumina MiSeq. The GAIT-2 Project is a study of 935 individuals in 35 extended Spanish families selected through a proband with idiopathic thrombophilia. Among the 110 individuals, a subset of 40 individuals was chosen as a discovery sample for identifying variants. A total of 762 genetic variants were detected. Several significant associations were established among common variants and low-frequency variants sets in KNG1 and F11 with FXI levels using the PLINK and SKAT packages. Among these associations, those of rs710446 and five low-frequency variant sets in KNG1 with FXI level variation were significant after multiple testing correction and permutation. Also, two putative pathogenic mutations related to high and low FXI levels were identified by data filtering and in silico predictions. This study of KNG1 and F11 loci should help to understand the connection between genotypic variation and variation in FXI levels. The functional genetic variants should be useful as markers of thromboembolic risk.
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Affiliation(s)
- Laura Martin-Fernandez
- Unit of Genomics of Complex Diseases, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - Giovana Gavidia-Bovadilla
- Unit of Genomics of Complex Diseases, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
- Department of ESAII, Center for Biomedical Engineering Research (CREB), Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Irene Corrales
- Congenital Coagulopathies, Blood and Tissue Bank, Barcelona, Spain
- Molecular Diagnosis and Therapy, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Helena Brunel
- Unit of Genomics of Complex Diseases, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - Lorena Ramírez
- Congenital Coagulopathies, Blood and Tissue Bank, Barcelona, Spain
- Molecular Diagnosis and Therapy, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
| | - Sonia López
- Unit of Genomics of Complex Diseases, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - Juan Carlos Souto
- Unit of Hemostasis and Thrombosis, Department of Hematology, IIB-Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Francisco Vidal
- Congenital Coagulopathies, Blood and Tissue Bank, Barcelona, Spain
- Molecular Diagnosis and Therapy, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona (VHIR-UAB), Barcelona, Spain
- CIBER de Enfermedades Cardiovasculares, Barcelona, Spain
| | - José Manuel Soria
- Unit of Genomics of Complex Diseases, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
- * E-mail:
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Mahé I, Chidiac J, Bertoletti L, Font C, Trujillo-Santos J, Peris M, Pérez Ductor C, Nieto S, Grandone E, Monreal M, Arcelus J, Ballaz A, Barba R, Barrón M, Barrón-Andrés B, Bascuñana J, Blanco-Molina A, Bueso T, Casado I, Culla A, de Miguel J, del Toro J, Díaz-Peromingo J, Falgá C, Fernández-Capitán C, Font C, Font L, Gallego P, García-Bragado F, García-Brotons P, Gómez V, González J, Grau E, Grimón A, Guirado L, Gutiérrez J, Hernández G, Hernández-Blasco L, Isern V, Jara-Palomares L, Jaras M, Jiménez D, Lacruz B, Lecumberri R, Lobo J, López-Jiménez L, López-Reyes R, López-Sáez J, Lorente M, Lorenzo A, Madridano O, Marchena P, Martín-Antorán J, Martín-Martos F, Monreal M, Morales M, Nauffal D, Nieto J, Nieto S, Núñez M, Otalora S, Otero R, Pagán B, Pedrajas J, Pérez C, Pérez G, Peris M, Porras J, Ramírez L, Reig O, Riera A, Rivas A, Rodríguez-Dávila M, Rosa V, Ruiz-Artacho P, Ruiz-Giménez N, Ruiz-Martínez C, Sampériz A, Sala C, Sanz O, Soler S, Sopeña B, Suarez I, Suriñach J, Tiberio G, Tolosa C, Trujillo-Santos J, Uresandi F, Valle R, Vela J, Villalta J, Malfante P, Verhamme P, Wells P, Hirmerova J, Malý R, Tomko T, Salgado E, Bertoletti L, Bura-Riviere A, Farge-Bancel D, Hij A, Mahé I, Merah A, Papadakis M, Braester A, Brenner B, Tzoran I, Apollonio A, Barillari G, Candeloro G, Ciammaichella M, Di Micco P, Ferrazzi P, Grandone E, Lessiani G, Lodigiani C, Mastroiacovo D, Pace F, Pinelli M, Prandoni P, Rota L, Tiraferri E, Tufano A, Visonà A, Belovs A, Skride A, Moreira M, Ribeiro J, Sousa M, Bosevski M, Zdraveska M, Alatri A, Bounameaux H, Calanca L, Mazzolai L, Serrano J, Decousus H, Reis A. The Clinical Course of Venous Thromboembolism May Differ According to Cancer Site. Am J Med 2017; 130:337-347. [PMID: 27884650 DOI: 10.1016/j.amjmed.2016.10.017] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [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: 01/26/2016] [Revised: 09/21/2016] [Accepted: 10/24/2016] [Indexed: 11/28/2022]
Abstract
BACKGROUND We hypothesized that the clinical course of venous thromboembolism in patients with active cancer may differ according to the specificities of primary tumor site. AIM AND METHODS We used data from RIETE (international registry of patients with venous thromboembolism) to compare the clinical venous thromboembolism-related outcomes during the course of anticoagulation in patients with one of the 4 more frequent cancers (breast, prostate, colorectal, or lung cancer). RESULTS As of September 2014, 3947 cancer patients were recruited, of whom 938 had breast, 629 prostate, 1189 colorectal, and 1191 lung cancer. Overall, 55% had metastatic disease (42%, 36%, 53%, and 72%, respectively). During the course of anticoagulant therapy (mean duration, 139 days), the rate of thromboembolic recurrences was similar to the rate of major bleeding in patients with breast (5.6 [95% confidence interval (CI), 3.8-8.1] vs 4.1 [95% CI, 2.7-5.9] events per 100 patient-years) or colorectal cancer (10 [95% CI, 7.6-13] vs 12 [95% CI, 9.4-15] per 100 patient-years). In contrast, in patients with prostate cancer, the rate of venous thromboembolic recurrences was half the rate of major bleeding (6.9 [95% CI, 4.4-10] vs 13 [95% CI, 9.2-17] events per 100 patient-years), whereas in those with lung cancer, the rate of thromboembolic recurrences was twofold higher than the rate of major bleeding (27 [95% CI, 22-23] vs 11 [95% CI, 8.6-15] per 100 patient-years). CONCLUSIONS Significant differences in the clinical profile of venous thromboembolic-related outcomes were observed according to the site of cancer. These findings suggest the development of cancer-specific anticoagulant strategies as an area for further research.
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Affiliation(s)
- Isabelle Mahé
- Department of Internal Medicine, Hôpital Louis Mourier, Investigation Network on Venous Thrombo-embolism (INNOVTE), Colombes (APHP), University Paris 7, EA REMES 7334 France.
| | - Jean Chidiac
- Department of Internal Medicine, Hôpital Louis Mourier, Investigation Network on Venous Thrombo-embolism (INNOVTE), Colombes (APHP), University Paris 7, EA REMES 7334 France
| | - Laurent Bertoletti
- Department of Vascular and Therapeutic Medicine, CHU Saint-Etienne, Hôpital Nord, French Clinical Research Infrastructure Network (F-CRIN), INNOVTE
| | - Carme Font
- Department of Medical Oncology, IDIBAPS/Translational Genomics and Targeted Therapeutics in Solid Tumors, Hospital Clinic de Barcelona, Spain
| | - Javier Trujillo-Santos
- Department of Internal Medicine, Complejo Hospitalario Universitario de Cartagena, Murcia, Spain
| | - Marisa Peris
- Department of Internal Medicine, Hospital Provincial Castellon; CEU Cardenal Herrero University, Spain
| | - Cristina Pérez Ductor
- Department of Emergency Medicine, Hospital Universitario Doctor Peset, Valencia, Spain
| | - Santiago Nieto
- Department of Haematology, Hospital de la Vega Lorenzo Guirao, Murcia, Spain
| | - Elvira Grandone
- Atherosclerosis and Thrombosis Unit, Casa Sollievo Della Sofferenza, Foggia, Italy
| | - Manuel Monreal
- Department of Internal Medicine, Hospital Universitari Germans Trias i Pujol, Badalona, Universidad Católica de Murcia, Spain
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González Albarrán O, Ramírez L. Abordaje de la diabetes en el hipertenso. Hipertensión y Riesgo Vascular 2017; 34 Suppl 2:30-34. [DOI: 10.1016/s1889-1837(18)30073-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Martín A, Tejerina E, de la Cal M, Ramírez L. Acute hydrocephalus secondary to carbon monoxide poisoning. Neurología (English Edition) 2016. [DOI: 10.1016/j.nrleng.2014.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Lindeque JZ, Jansen van Rensburg PJ, Louw R, van der Westhuizen FH, Florit S, Ramírez L, Giralt M, Hidalgo J. Obesity and metabolomics: metallothioneins protect against high-fat diet-induced consequences in metallothionein knockout mice. OMICS 2015; 19:92-103. [PMID: 25683887 DOI: 10.1089/omi.2014.0087] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Obesity continues to rise as an alarming global epidemic. System level mechanisms, diagnostics, and therapeutics are sorely needed so as to identify at risk individuals and design appropriate population scale interventions. The present study evaluated the protective role of metallothioneins (MTs) against obesity and high-fat diet-induced effects such as insulin resistance in both male and female MT-1+2 knockout and MT-3 knockout mice. As the metabolome is closest to the functional phenotype, changes in metabolite levels were also evaluated, and the direct or indirect involvement of MTs in metabolism examined. MT-1+2-, MT-3 knockout, and wild-type mice were given a high-fat diet for 2 months. Variation in body weight gain, tissue weight, and response to oral glucose tolerance test and insulin tolerance test were determined and compared to mice that received the control diet. Effect of the high-fat diet on the knockout mice were investigated on the metabolome level in specific tissues using metabolomics. Both knockout mice strains were more susceptible to high-fat diet-induced effects, such as weight gain and moderate insulin resistance, with the MT-3 knockout mice most susceptible. Brain tissue of the knockout mice showed most metabolic variation and pointed to possible impairment of mitochondrial function. The protective effect of MTs against high-fat diet and obesity-induced effects such as insulin resistance was evident from our observations. The putative role MTs play in mitochondrial function is possibly the main contributor to the lack of these effects in wild-type mice. Considering the expression profiles of the MT isoforms and similarity in brain metabolic variation in the knockout strains, it appears that they promote mitochondrial function in the hypothalamus, thereby limiting weight gain and insulin resistance. Furthermore, metabolomics research in preclinical models of obesity and in the clinic is warranted in the near future.
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Affiliation(s)
- Jeremie Z Lindeque
- 1 Centre for Human Metabonomics, North-West University (Potchefstroom Campus) , South Africa
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Ramírez-Vélez R, Correa-Bautista JE, Muñoz-Rodríguez DI, Ramírez L, González-Ruíz K, Domínguez-Sánchez MA, Durán-Palomino D, Girabent-Farrés M, Flórez-López ME, Bagur-Calafat MC. Evidence-based practice: beliefs, attitudes, knowledge, and skills among Colombian physical therapists. Colomb Med (Cali) 2015; 46:33-40. [PMID: 26019383 PMCID: PMC4437285] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 08/27/2014] [Accepted: 10/10/2014] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE The main purpose of this study was to describe a group of Colombian physical therapists' beliefs and attitudes towards Evidence-Based Practice (EBP), their education, knowledge and skills for implementing EBP, the use of relevant literature in clinical practice, access to and availability of scientific information and perceived barriers to including EBP in practice. METHODS This was a cross-sectional study which involved 1,064 Colombian physical therapists. The study used a 50-item screening questionnaire EBP developed to estimate attitudes, beliefs, knowledge and skills regarding. This instrument has been adapted and was validated previously in Colombia by Flórez-López et al. RESULTS The population mostly consisted of young females (77.2%) aged 22 to 29 years old (79.4%). Most respondents had an undergraduate degree (87.7%). The physical therapists stated that they had positive attitudes and beliefs regarding EBP, most of them answering that they agreed or strongly agreed that EBP is necessary (71.6%), the relevant literature is useful for practice (61.3%), EBP improves the quality of patient care (64.1%) and evidence helps in decision-making (44.5%). Forty-one percent of the respondents indicated that a lack of research skills was the most important barrier to the use of evidence in practice. CONCLUSION The physical therapists reported that they had a positive attitude to EBP and were interested in learning about or improving the skills necessary to adopt EBP in their clinical practice.
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Affiliation(s)
- Robinson Ramírez-Vélez
- Grupo GICAEDS, Facultad de Cultura Física, Deporte y Recreación, Universidad Santo Tomas, Bogotá, Colombia,Grupo de Ejercicio Físico y Deportes, Programa de Fisioterapia, Facultad de Salud, Universidad Manuela Beltrán, Bogotá, Colombia
| | - Jorge Enrique Correa-Bautista
- Centro de Estudios en Medición de la Actividad Física (CEMA), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia
| | | | - Lorena Ramírez
- Instituto Universitario de Ciencias de la Salud, Fundación H.A. Barceló, Buenos Aires, Argentina
| | - Katherine González-Ruíz
- Grupo de Ejercicio Físico y Deportes, Programa de Fisioterapia, Facultad de Salud, Universidad Manuela Beltrán, Bogotá, Colombia
| | | | - Diana Durán-Palomino
- Centro de Estudios en Medición de la Actividad Física (CEMA), Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia
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Urbano M, Dorado J, Ortiz I, Morrell JM, Demyda-Peyrás S, Gálvez MJ, Alcaraz L, Ramírez L, Hidalgo M. Effect of cryopreservation and single layer centrifugation on canine sperm DNA fragmentation assessed by the sperm chromatin dispersion test. Anim Reprod Sci 2013; 143:118-25. [PMID: 24210910 DOI: 10.1016/j.anireprosci.2013.10.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 09/24/2013] [Accepted: 10/16/2013] [Indexed: 11/15/2022]
Abstract
The aims of this study were: 1) to assess the effect of freezing and thawing on dog sperm DNA fragmentation index (sDFI) using the sperm chromatin dispersion test (SCDt); and 2) to determine whether or not the sperm selection by single layer centrifugation (SLC) using Androcoll-C improves sperm DNA longevity in SLC-selected frozen-thawed dog semen samples. Semen samples were collected from 4 dogs using digital manipulation. After collection, ejaculates were pooled and cryopreserved following a standard protocol. Sperm motility and morphology were assessed before freezing and after thawing as a control for the cryopreservation method used. In experiment 1, sDFI was analyzed immediately before freezing and after thawing (baseline values), showing no significant differences between fresh and frozen-thawed semen samples. In experiment 2, frozen-thawed semen samples were processed or not by SLC using Androcoll-C and longevity of DNA were assessed in terms of sDFI after 24h of in vitro incubation at physiological temperature (38°C). The results showed low values of sDFI in SLC-selected semen in comparison to unselected samples. In conclusion, no effect of cryopreservation was observed on baseline values of dog sperm DNA fragmentation. Additionally, SLC-selection using Androcoll-C improved longevity of frozen-thawed sperm DNA assessed by the SCDt.
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Affiliation(s)
- M Urbano
- Animal Reproduction Group, Department of Animal Medicine and Surgery, University of Cordoba, Cordoba, Spain
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Ortiz I, Dorado J, Morrell J, Acha D, Ramírez L, Urbano M, Carrasco J, Gómez-Arrones V, Calero R, Hidalgo M. Sperm motility differences between donkey cooled sperm processed by colloid centrifugation. J Equine Vet Sci 2012. [DOI: 10.1016/j.jevs.2012.06.077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Montes-Berrueta D, Ramírez L, Salmen S, Berrueta L. Fas and FasL expression in leukocytes from chronic granulomatous disease patients. Invest Clin 2012; 53:157-167. [PMID: 22978048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Abstract. Chronic Granulomatous Disease (CGD) is a primary immunodeficiency characterized by defects in superoxide (O2-) production, which result from mutations in one of the four NADPH oxidase components, predisposing to bacterial and fungal infections. Besides the O2-defect, it has been described that neutrophils from CGD patients are resistant to cell death, a phenomenon that has been connected to chronic inflammation and predisposition to autoimmune diseases. A diminished expression of Fas and its counterpart FasL, molecules known to play a major role in cell death, has been described in lymphocytes depleted of O2-reactive oxygen species (ROS), suggesting an involvement of ROS in Fas/FasL expression. In this work, Fas and FasL expressions were analyzed in T cells and neutrophils from two CGD families, previously known to harbor two different molecular defects: absence of either p47-phox or p67-phox. We found that T lymphocytes from CGD patients express low levels of Fas and FasL, while a diminished FasL expression was observed on neutrophils from a CGD A470 patient. These defects may contribute to understand altered cell death in CGD patients.
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Corrales I, Ramírez L, Altisent C, Parra R, Vidal F. The study of the effect of splicing mutations in von Willebrand factor using RNA isolated from patients' platelets and leukocytes. J Thromb Haemost 2011; 9:679-88. [PMID: 21251206 DOI: 10.1111/j.1538-7836.2011.04204.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND In von Willebrand factor (VWF) the effect of mutations potentially affecting mRNA processing or splicing is less predictable than that of other mutations (e.g. nonsense or missense substitutions). Bioinformatic tools can provide a valuable means to determine the consequences of potential splice site mutations (PSSM), but functional studies are mandatory to elucidate the true effect of the variation detected. OBJECTIVES, PATIENTS AND METHODS After identification of PSSM in VWD patients, we began a systematic study of their in vivo effect in RNA extracted from the patients' platelets and leukocytes. RESULTS AND CONCLUSIONS Thirteen pairs of primers were designed for full amplification of VWF mRNA by RT-PCR that, after sequencing of aberrant products, enabled elucidation of the PSSM consequences for mRNA processing. This procedure was used to study seven different PSSM identified in four patients demonstrating diverse molecular mechanisms such as exon skipping (c.533-2A>G and c.8155+3G>C) and the activation of a cryptic splice site (c.7730-1G>C). No visible effect was evident for c.1533+15G>A and c.5170+10C>T and the consequence of c.[546G>A;7082-2A>G] was hidden by nonsense-mediated mRNA decay (NMD). Results were compared with in silico predictions of four splice-site analysis tools. We demonstrate selective degradation of VWF mRNA bearing PSSM by NMD for several mutations, which suggests that NMD represents a general mechanism for truncating mutations in VWF. Furthermore, because NMD efficiency varies between cell types, use of RNA from both platelets and leukocytes for in vivo study of VWF PSSM offers complementary results, particularly in cases in which NMD occurs in the allele carrying the mutation.
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Affiliation(s)
- I Corrales
- Unitat de Diagnòstic i Teràpia Molecular, Banc de Sang i Teixits, Barcelona, Spain
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Viayna E, Gómez T, Galdeano C, Ramírez L, Ratia M, Badia A, Clos MV, Verdaguer E, Junyent F, Camins A, Pallàs M, Bartolini M, Mancini F, Andrisano V, Arce MP, Rodríguez-Franco MI, Bidon-Chanal A, Luque FJ, Camps P, Muñoz-Torrero D. Novel Huprine Derivatives with Inhibitory Activity toward β-Amyloid Aggregation and Formation as Disease-Modifying Anti-Alzheimer Drug Candidates. ChemMedChem 2010; 5:1855-70. [DOI: 10.1002/cmdc.201000322] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Camps P, Formosa X, Galdeano C, Gómez T, Muñoz-Torrero D, Ramírez L, Viayna E, Gómez E, Isambert N, Lavilla R, Badia A, Clos MV, Bartolini M, Mancini F, Andrisano V, Bidon-Chanal A, Huertas Ó, Dafni T, Luque FJ. Tacrine-based dual binding site acetylcholinesterase inhibitors as potential disease-modifying anti-Alzheimer drug candidates. Chem Biol Interact 2010; 187:411-5. [DOI: 10.1016/j.cbi.2010.02.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 01/27/2010] [Accepted: 02/09/2010] [Indexed: 10/19/2022]
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Colihueque N, Cárdenas R, Ramírez L, Estay F, Araneda C. Analysis of the association between spawning time QTL markers and the biannual spawning behavior in rainbow trout (Oncorhynchus mykiss). Genet Mol Biol 2010; 33:578-82. [PMID: 21637435 PMCID: PMC3036128 DOI: 10.1590/s1415-47572010000300032] [Citation(s) in RCA: 17] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 05/10/2010] [Indexed: 11/21/2022] Open
Abstract
The rainbow trout is a salmonid fish that occasionally exhibits broodstocks with biannual spawning behavior, a phenomenon known as a double annual reproductive cycle (DARC). Spawning time quantitative trait loci (SPT-QTLs) affect the time of the year that female rainbow trout spawn and may influence expression of the DARC trait. In this study, microsatellite markers linked and unlinked to SPT-QTLs were genotyped to investigate the underlying genetics of this trait. SPT-QTLs influenced the DARC trait since in two case-control comparisons three linked markers (OmyFGT12TUF, One3ASC and One19ASC) had significant levels of allelic frequency differentiation and marker-character association. Furthermore, alleles of One3ASC and One19ASC had significantly higher frequencies in populations that carried the DARC trait.
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Affiliation(s)
- Nelson Colihueque
- Departamento de Ciencias Básicas, Universidad de Los Lagos, Osorno Chile
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Corrales I, Ramírez L, Ayats J, Altisent C, Parra R, Vidal F. Integration of molecular and clinical data of 40 unrelated von Willebrand Disease families in a Spanish locus-specific mutation database: first release including 58 mutations. Haematologica 2010; 95:1982-4. [PMID: 20801902 DOI: 10.3324/haematol.2010.028977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Luis J, Ramírez L, Carmona A, Ortiz G, Delgado J, Cárdenas R. Paternal behavior and testosterone plasma levels in the Volcano Mouse Neotomodon alstoni (Rodentia: Muridae). REV BIOL TROP 2009; 57:433-9. [PMID: 19637720 DOI: 10.15517/rbt.v57i1-2.11360] [Citation(s) in RCA: 4] [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: 11/10/2022] Open
Abstract
Paternal behavior and testosterone plasma levels in the Volcano Mouse Neotomodon alstoni (Rodentia: Muridae). Although initially it was thought that testosterone inhibited the display of paternal behavior in males of rodents, it has been shown that in some species high testosterone levels are needed for exhibition of paternal care. In captivity, males of Volcano Mouse (Neotomodon alstoni) provide pups the same care provided by the mother, with the exception of suckling. Here we measured plasmatic testosterone concentrations 10 days after mating, five and 20 days postpartum, and 10 days after males were isolated from their families in order to determine possible changes in this hormone, associated to the presence and age of pups. Males of Volcano Mouse exhibited paternal behavior when their testosterone levels were relatively high. Although levels of this hormone did not change with the presence or pups age, males that invested more time in huddling showed higher testosterone levels. It is possible that in the Volcano Mouse testosterone modulates paternal behavior indirectly, as in the California mouse.
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Affiliation(s)
- Juana Luis
- Unidad de Morfología y Función, FES Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Edo. de México, México.
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Camps P, Formosa X, Galdeano C, Muñoz-Torrero D, Ramírez L, Gómez E, Isambert N, Lavilla R, Badia A, Clos MV, Bartolini M, Mancini F, Andrisano V, Arce MP, Rodríguez-Franco MI, Huertas Ó, Dafni T, Luque FJ. Pyrano[3,2-c]quinoline−6-Chlorotacrine Hybrids as a Novel Family of Acetylcholinesterase- and β-Amyloid-Directed Anti-Alzheimer Compounds. J Med Chem 2009; 52:5365-79. [DOI: 10.1021/jm900859q] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Pelayo Camps
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
| | - Xavier Formosa
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
| | - Carles Galdeano
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
| | - Diego Muñoz-Torrero
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
| | - Lorena Ramírez
- Laboratori de Química Farmacèutica (Unitat Associada al CSIC), Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
| | - Elena Gómez
- Institute for Research in Biomedicine, Barcelona Science Park, Baldiri Reixac 10-12, E-08028, Barcelona, Spain
| | - Nicolás Isambert
- Institute for Research in Biomedicine, Barcelona Science Park, Baldiri Reixac 10-12, E-08028, Barcelona, Spain
| | - Rodolfo Lavilla
- Institute for Research in Biomedicine, Barcelona Science Park, Baldiri Reixac 10-12, E-08028, Barcelona, Spain
- Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII, s/n, E-08028, Barcelona, Spain
| | - Albert Badia
- Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - M. Victòria Clos
- Departament de Farmacologia, Terapèutica i Toxicologia, Institut de Neurociències, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain
| | - Manuela Bartolini
- Department of Pharmaceutical Sciences, Alma Mater Studiorum, Bologna University, Via Belmeloro 6, I-40126, Bologna, Italy
| | - Francesca Mancini
- Department of Pharmaceutical Sciences, Alma Mater Studiorum, Bologna University, Via Belmeloro 6, I-40126, Bologna, Italy
| | - Vincenza Andrisano
- Department of Pharmaceutical Sciences, Alma Mater Studiorum, Bologna University, Via Belmeloro 6, I-40126, Bologna, Italy
| | - Mariana P. Arce
- Instituto de Química Médica (CSIC), Juan de la Cierva, 3, E-28006, Madrid, Spain
| | | | - Óscar Huertas
- Departament de Fisicoquímica, Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
| | - Thomai Dafni
- Departament de Fisicoquímica, Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
| | - F. Javier Luque
- Departament de Fisicoquímica, Facultat de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain
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Corrales I, Ramírez L, Altisent C, Parra R, Vidal F. Rapid molecular diagnosis of von Willebrand disease by direct sequencing. Detection of 12 novel putative mutations in VWF gene. Thromb Haemost 2009; 101:570-6. [PMID: 19277422 DOI: 10.1160/th08-08-0500] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Molecular diagnosis of von Willebrand Disease (VWD) is particularly complex. The autosomal von Willebrand factor gene (VWF) is large and highly polymorphic, and there is a highly homologous (>96%) partial pseudogene in chromosome 22. Because of these difficulties, application of molecular study of VWD to the clinical routine has been considerably delayed. Recent advances in sequencing technology and bioinformatics could convert direct sequencing of the complete VWF into a routine diagnostic tool for VWD, which is especially desirable in types 1 and 3. This study describes a highly optimized procedure in which all the coding and intronic flanking regions of VWF are amplified under identical thermocycling parameters in a ready-to-use PCR plate format. The entire sequencing procedure, from blood extraction to mutation identification, can be done within 24 hours, resulting in a simple, versatile, cost-effective strategy with little hands-on time requirements. To validate the method, we performed full-length VWF sequencing of 21 index cases including seven of each VWD type. A total of 30 VWF genetic variations were identified. Twelve of these sequence variations are new, including four missense, one nonsense, one insertion, the first insertion-deletion described in VWF, and 5 potential splice site mutations. To our knowledge, this is the fastest and most efficient protocol designed to date for complete sequencing of the VWF coding region in the molecular diagnosis of VWD.
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Affiliation(s)
- Irene Corrales
- Unitat de Diagnòstic i Teràpia Molecular, Banc de Sang i Teixits, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
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Ramírez L, Arrizon J, Sandoval G, Cardador A, Bello-Mendoza R, Lappe P, Mateos-Díaz JC. A new microplate screening method for the simultaneous activity quantification of feruloyl esterases, tannases, and chlorogenate esterases. Appl Biochem Biotechnol 2008; 151:711-23. [PMID: 18830826 DOI: 10.1007/s12010-008-8319-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Accepted: 07/11/2008] [Indexed: 11/29/2022]
Abstract
Feruloyl, chlorogenate esterases, and tannases are enzymes useful in phenolic modifications of pharmaceutical relevance as protectors against several degenerative human diseases. Therefore, there is a growing interest in discovering new sources of these enzymes. However, traditional methods for their activity measurements are time-consuming and poorly adapted for high-throughput screening. In this study, a successful new microplate high-throughput screening method for the simultaneous quantification of all mentioned activities is demonstrated. This method allows the detection of activities as low as 1.7 mU ml(-1). Furthermore, reaction rates increased proportionally with the amount of enzyme added, and no interferences with the other commercial hydrolases tested were found. The utility of the method was demonstrated after simultaneously screening feruloyl, chlorogenate esterase, and tannase activities in solid state fermentation extracts obtained during the kinetics of production of 20 fungal strains. Among these, seven strains were positive for at least one of the esterase activities tested. This result shows the potential for the rapid routine screening assays for multiple samples of moderate low to high enzymatic levels.
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Affiliation(s)
- L Ramírez
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco AC, Colonia Colinas de la Normal, Guadalajara, Jalisco, CP, México
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Flores‐Quijano ME, Ramírez L, Tolentino M, Casanueva E. Mammary gland permeability (Na:K in milk) and growth velocity in breastfeed children. FASEB J 2007. [DOI: 10.1096/fasebj.21.5.a118-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maria Eugenia Flores‐Quijano
- Nutrition ResearchInstituto Nacional de Perinatología Isidro Espinosa de los ReyesMontes Urales 800 Lomas de VirreyesMexico CityMexico
| | - Lorena Ramírez
- Nutrition ResearchInstituto Nacional de Perinatología Isidro Espinosa de los ReyesMontes Urales 800 Lomas de VirreyesMexico CityMexico
| | - Maricruz Tolentino
- Nutrition ResearchInstituto Nacional de Perinatología Isidro Espinosa de los ReyesMontes Urales 800 Lomas de VirreyesMexico CityMexico
| | - Esther Casanueva
- Nutrition ResearchInstituto Nacional de Perinatología Isidro Espinosa de los ReyesMontes Urales 800 Lomas de VirreyesMexico CityMexico
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Sánchez-García JF, Gallardo D, Ramírez L, Vidal F. Multiplex fluorescent analysis of four short tandem repeats for rapid haemophilia A molecular diagnosis. Thromb Haemost 2006; 94:1099-103. [PMID: 16363255 DOI: 10.1160/th05-05-0360] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [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: 11/05/2022]
Abstract
Indirect molecular diagnosis of hemophiliaA (HA) is carried out by analyzing intragenic polymorphic markers described along the coagulation factorVIII (FVIII) gene. Several studies have demonstrated that the two commonly used intronic short tandem repeats (STR13 and STR22) located in the FVIII gene are highly informative for this task. Two extragenic markers closely linked to FVIII (DXS1073 and DXS1108) have also been described as valuable tools for gene tracking. The objective of the present work was to develop a rapid, single-tube automated method to simultaneously analyze these four STRs. Consistent amplification was achieved by quadruplex fluorescent PCR and the products were analyzed by capillary electrophoresis. Validation of the method included DNA analysis of 88 individuals from a control population, 45 HA patients and 32 individuals from 10 HA-affected families. Statistical study showed that the STR13, STR22 and DXS1108 loci were in significant linkage disequilibrium, whereas DXS1073 was not. Nevertheless, the combination of the four markers offered a high heterozygosity rate (>90%) that improved tracing of FVIII gene inheritance. Optimal results with application to single cells in a HA preimplantation genetic diagnosis (PGD) protocol demonstrated the sensitivity of the technique. In conclusion, the automated fluorescent method described is an extremely rapid, simple and highly informative one that is easy to standardize and allows direct comparison of results among different groups working with genetic counseling, prenatal diagnosis and PGD in HA-affected families.
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Affiliation(s)
- Jorge F Sánchez-García
- Unitat de Diagnòstic i Teràpia Molecular, Centre de Transfusió i Banc de Teixits, Passeig Vall d'Hebron, Barcelona, Spain
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Vidal F, Sánchez-García JF, Farssac E, Ramírez L, Gallardo D. Rapid single-step detection of the inversion hotspot of mutation in hemophilia A by real-time PCR. J Thromb Haemost 2005; 3:2822-3. [PMID: 16359527 DOI: 10.1111/j.1538-7836.2005.01650.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Barajas-Barajas LO, Valdez LL, Gonzalez JR, García-García C, Rivera H, Ramírez L. Sensorineural deafness in two infants: a novel feature in the 22q distal duplication syndrome. Cardinal signs in trisomies 22 subtypes. Genet Couns 2004; 15:167-73. [PMID: 15287416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Sensorineural deafness in two infants: a novel feature in the 22q distal duplication syndrome. cardinal signs in trisomies 22 subtypes: Distal trisomy 22 has been described in more than 15 individuals. The features are severe mental and growth retardation, failure to thrive, congenital hypotonia, hydrocephalus, microcephaly, cleft palate, epicanthic folds, low-set ears, broad prominent nasal bridge, long philtrum, micrognathia, finger-like thumbs, cryptorchidism. We describe a girl deceased at the age of 12 years and an 11 year old boy, both with a duplication of distal 22q due to a parental pericentric inversion (22) (p13q12). Their phenotypes are compatible with distal trisomy of chromosome 22. However, they did not present cleft palate, but the survival of both patients permitted us to discover sensorineural deafness not previously reported in this chromosomal duplication.
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Affiliation(s)
- L O Barajas-Barajas
- Servicio de Genética Humana, Laboratorio de Citogenética, Dirección de Rehabilitación, Sistema DIF Jalisco, México
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Sánchez Ramos A, Vidal J, Jáuregui ML, Barrera M, Recio C, Giner M, Toribio L, Salvador S, Sanmartín A, de la Fuente M, Santos JF, de Juan FJ, Moraleda S, Méndez JL, Ramírez L, Casado RM. Efficacy, safety and predictive factors of therapeutic success with sildenafil for erectile dysfunction in patients with different spinal cord injuries. Spinal Cord 2001; 39:637-43. [PMID: 11781860 DOI: 10.1038/sj.sc.3101210] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
STUDY DESIGN Multicenter, open, prospective, before-after study. OBJECTIVE To assess the efficacy and safety of sildenafil therapy for erectile dysfunction in patients with spinal cord injury, and the association between the response to sildenafil and factors such as causes and levels of spinal cord injury, grade of ASIA deficit, time since injury, orgasmic perception, and degree of baseline erection. SETTING Homes of outpatients of 16 spinal cord injury units in Spain. METHOD One hundred and seventy patients with erectile dysfunction secondary to spinal cord injury, from whom baseline data were collected on their sexual function, and who started treatment with sildenafil 50 mg. An efficacy assessment was made by the patient and his partner, and the score of the International Index of Erectile Function (IIEF) was recorded. RESULTS It was reported by 88.2% of the patients and 85.3% of their partners that treatment with sildenafil had improved their erections, regardless of the baseline characteristics of the spinal cord injury and erectile function. In responders, this improvement was confirmed by an increase from 12.5 to 24.8 points (P<0.001) of the Erectile Function Domain of IIEF. A significant improvement was also seen in patients' satisfaction with sexual activity and general satisfaction derived from sexual life. Preservation of orgasmic perception and a baseline degree of erection of 3 or 4 (P=0.006) were predictors of therapeutic success. No serious adverse events occurred. CONCLUSION Sildenafil is an effective, well-tolerated treatment for erectile dysfunction caused by spinal cord injury, regardless of the cause, neurological level, ASIA grade, and time since injury. SPONSORSHIP Spanish Society of Paraplegia.
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Abstract
OBJECTIVES To evaluate the impact of directed physical exercise in patients with spinal cord injury (SCI) and to measure functional independence before and after an exercise program. DESIGN Case series. SETTING Tertiary care center. PARTICIPANTS Thirteen volunteers with thoracic SCI. INTERVENTION Patients participated in a 16-week exercise program, consisting of 3 weekly 120-minute sessions. They performed mobility, strength, coordination, aerobic resistance, and relaxation activities. MAIN OUTCOME MEASURES The FIM instrument, arm crank exercise test, wheelchair skills, maximum strength, anthropometry (body composition measurements), and lipid levels. The results were processed by using nonparametric statistical tests. RESULTS After comparing the values at the beginning and end of the program, patients showed a significant increase in the following parameters: average FIM score (p < .001) 113 +/- 7.1; weight lifted in the bench press exercise (46%, p < .0001), military press (14%, p < .0002), and butterfly press exercise (23%, p < .0001), and number of repetitions for biceps (10%, p <.0001), triceps (18%, p < .0001), shoulder abductors (61%, p < .0001), abdominals (33%, p <.009), and curl back neck exercise (19%, p < .0001). The maximum resistance achieved during the arm crank exercise test increased (p < .001), and heart rate 6 minutes after the exercise test decreased (p <.05). The time required for the wheelchair skill tests significantly decreased in all the tasks. No statistically significant changes occurred in body weight (p < .154), percentage of body fat (p < .156), lean body weight (p < .158), cholesterol/high-density lipoprotein cholesterol ratio (p < .076), or maximum heart rate (p < .20). The only complication arose in a patient who developed transient sinus bradycardia and hypotension after the arm crank exercise test. CONCLUSION The directed exercise program had a positive impact for most of the variables of the study.
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Affiliation(s)
- F S Durán
- Departamento de Medicina Fisica y Rehabilitación, Facultad de Medicina Universidad de Antioquia, Medellín, Columbia.
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Chaves F, Calvo JC, Carvajal C, Rivera Z, Ramírez L, Pinto M, Trujillo M, Guzmán F, Patarroyo ME. Synthesis, isolation and characterization of Plasmodium falciparum antigenic tetrabranched peptide dendrimers obtained by thiazolidine linkages. J Pept Res 2001; 58:307-16. [PMID: 11606215 DOI: 10.1034/j.1399-3011.2001.00921.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Different chemical alternatives were evaluated for obtaining immunogenic polypeptidic macromolecules which could then be used as vaccines. These were based on the ligation reaction between an unprotected immunogenic peptide and an unprotected multifunctional core peptide; polyantigens, designated dendrimers because their form resembles that of dendritic cells, were thus obtained. The antigen-core ligation alternatives, studied by indirect synthesis, were the formation of oxime, hydrazone and thiazolidine linkages, making use of the reaction between a weak base (acting as nucleophile) and an alkyl aldehyde. The other alternative was the formation of a thioether linkage between a sulfydryl and an alkyl halide. Finally, a multiple antigen peptide (MAP) was synthesized by direct synthesis. All reactions were monitored by SEC-HPLC and SDS-PAGE. Dendrimer molecular mass obtained was confirmed by MS MALDI-TOF. Dendrimer purification was first carried out by concentrating crude reaction products with CP-5000 centricons and (using SEC-HPLC) pure tetramers were then obtained. A 20-residue 9376 immunogenic sequence, from Plasmodium falciparum apical merozoite antigen protein (AMA-1), was used to study the best alternative for chemical ligation. It was observed that thiazolidine formation proceeded with greater yield and in less time than the others. A tetramer has been simultaneously synthesized via thiazolidine with the SPf-66 antimalarial vaccine 45-residue monomer, proving the technique's versatility. The 9376 peptide disulfide bound polymer and SPf-66 (as well as their tetrameric thiazolidine dendrimers) were inoculated in rabbits to evaluate their antibody response. It was observed that titers for tetrameric thiazolidine dendrimers were not just greater but were also sustained over time. Western blot for pre-immune and immune sera showed that dendrimer sera recognized specific Plasmodium falciparum proteins as well as disulfide-bound polymers.
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Affiliation(s)
- F Chaves
- Instituto de Inmunología, Hospital San Juan de Dios, Universidad Nacional de Colombia, Carrera 10 No 1-99 sur, Bogotá, Colombia.
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Larraya LM, Pérez G, Iribarren I, Blanco JA, Alfonso M, Pisabarro AG, Ramírez L. Relationship between monokaryotic growth rate and mating type in the edible basidiomycete Pleurotus ostreatus. Appl Environ Microbiol 2001; 67:3385-90. [PMID: 11472908 PMCID: PMC93032 DOI: 10.1128/aem.67.8.3385-3390.2001] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The edible fungus Pleurotus ostreatus (oyster mushroom) is an industrially produced heterothallic homobasidiomycete whose mating is controlled by a bifactorial tetrapolar genetic system. Two mating loci (matA and matB) control different steps of hyphal fusion, nuclear migration, and nuclear sorting during the onset and progress of the dikaryotic growth. Previous studies have shown that the segregation of the alleles present at the matB locus differs from that expected for a single locus because (i) new nonparental B alleles appeared in the progeny and (ii) there was a distortion in the segregation of the genomic regions close to this mating locus. In this study, we pursued these observations by using a genetic approach based on the identification of molecular markers linked to the matB locus that allowed us to dissect it into two genetically linked subunits (matBalpha and matBbeta) and to correlate the presence of specific matBalpha and matA alleles with differences in monokaryotic growth rate. The availability of these molecular markers and the mating type dependence of growth rate in monokaryons can be helpful for marker-assisted selection of fast-growing monokaryons to be used in the construction of dikaryons able to colonize the substrate faster than the competitors responsible for reductions in the industrial yield of this fungus.
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Affiliation(s)
- L M Larraya
- Departamento de Producción Agraria, Universidad Pública de Navarra, E-31006 Pamplona, Spain
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Ramírez L, Muez V, Alfonso M, García Barrenechea A, Alfonso L, Pisabarro AG. Use of molecular markers to differentiate between commercial strains of the button mushroom Agaricus bisporus. FEMS Microbiol Lett 2001; 198:45-8. [PMID: 11325552 DOI: 10.1111/j.1574-6968.2001.tb10617.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Agaricus bisporus is an edible basidiomycete cultivated industrially for food production. Different spawn and mushroom producers use genetically related A. bisporus strains frequently marketed as different products. In this paper we show that the use of suitable molecular markers reveals the high level of genetic homology of commercial strains of A. bisporus, and allows, at the same time, to distinguish between them. In the course of this work, a molecular marker potentially linked to the agronomic character 'mushroom weight' has been identified by bulked segregant analysis.
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Affiliation(s)
- L Ramírez
- Departmento de Producción Agraria, Universidad Publica de Navarra, 31006 pamplona Spain.
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Peinado R, Merino JL, Ramírez L, Echeverría I. Decremental atriofascicular accessory pathway with bidirectional conduction: delineation of atrial and ventricular insertion by radiofrequency current application. J Cardiovasc Electrophysiol 2001; 12:489-92. [PMID: 11332574 DOI: 10.1046/j.1540-8167.2001.00489.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A 17-year-old girl with a corrected complex congenital heart disease and recurrent episodes of supraventricular tachycardia was referred for catheter ablation. Electrophysiologic studies revealed the presence of an accessory pathway (AP) with bidirectional conduction and decremental properties. We demonstrated a course parallel to the node-His AV conduction system. Transient abolition of the bidirectional conduction through the AP was obtained by radiofrequency application to the ventricular insertion located in the distal right bundle branch and to the atrial insertion, located in the mid-anterior atrial septum. Radiofrequency application at the low anterior atrial septum, above the His bundle, successfully abolished AP conduction without affecting AV nodal conduction. Demonstration of the course and insertions of the AP, its bidirectional decremental conduction properties, and the association with a complex congenital heart disease are exceptional and interesting findings and raise the possibility of an accessory AV node with a parallel conduction pathway to the right bundle branch.
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Affiliation(s)
- R Peinado
- Unidad de Arritmias y Electrofisiología, Hospital General Universitario La Paz, Universidad Autónoma, Madrid, Spain.
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Abstract
We have constructed a genetic linkage map of the edible basidiomycete Pleurotus ostreatus (var. Florida). The map is based on the segregation of 178 random amplified polymorphic DNA and 23 restriction fragment length polymorphism markers; four hydrophobin, two laccase, and two manganese peroxidase genes; both mating type loci; one isozyme locus (est1); the rRNA gene sequence; and a repetitive DNA sequence in a population of 80 sibling monokaryons. The map identifies 11 linkage groups corresponding to the chromosomes of P. ostreatus, and it has a total length of 1,000.7 centimorgans (cM) with an average of 35.1 kbp/cM. The map shows a high correlation (0.76) between physical and genetic chromosome sizes. The number of crossovers observed per chromosome per individual cell is 0.89. This map covers nearly the whole genome of P. ostreatus.
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Affiliation(s)
- L M Larraya
- Departamento de Producción Agraria, Universidad Pública de Navarra, Pamplona, Spain
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Echeverría IJ, Merino JL, Peinado R, Ramírez L, Peinado A, Sobrino JA. [Cardioinhibitory vagal response not related to pain, and induced by radiofrequency application during ablation of right posteroseptal accessory pathway]. Rev Esp Cardiol 2000; 53:1399-402. [PMID: 11060260 DOI: 10.1016/s0300-8932(00)75248-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Inappropriate sinus tachycardia is the most common arrhythmia induced by radiofrequency energy delivery in the posteroseptal area. It has been suggested that this could be secondary to parasymphathetic nerve injury. We report a patient with extreme sinus bradycardia and PR interval prolongation induced by radiofrequency energy delivered in the coronary sinus ostium area, but not related to any other stimulus. The most probable mechanism of the disorder was transient stimulation of the vagal afferent nerve fibers located in this anatomical area.
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Affiliation(s)
- I J Echeverría
- Laboratorio de Electrofisiología. UMQ de Cardiología. Hospital General Universitario La Paz. Madrid.
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Peinado AM, Merino JL, Peinado R, Echeverría I, Ramírez L, Sobrino JA. [Oblique orientation of the accessory pathway demonstrated by radiofrequency application]. Rev Esp Cardiol 2000; 53:1410-2. [PMID: 11060263 DOI: 10.1016/s0300-8932(00)75251-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Activation mapping of atrial and ventricular insertion has suggested an oblique orientation of some accessory pathways. However, this aspect has not been demonstrated by radiofrequency application. This report presents two patients with Wolff-Parkinson-White syndrome and an accessory pathway with bidirectional conduction and oblique orientation. The accessory pathway oblique orientation was demonstrated by transient and permanent conduction abolition following radiofrequency application in two separate ventricular and atrial sites. These findings may explain the failure to ablate accessory pathway by radiofrequency application in the ventricular side of the mitral annulus guided by retrograde atrial activation occasionally observed in patients with a concealed accessory pathway.
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Affiliation(s)
- A M Peinado
- Laboratorio de Electrofisiología. UMQ de Cardiología. Hospital General Universitario La Paz. Madrid
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Ramírez L, Larraya LM, Pisabarro AG. Molecular tools for breeding basidiomycetes. Int Microbiol 2000; 3:147-52. [PMID: 11032306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The industrial production of edible basidiomycetes is increasing every year as a response to the increasing public demand of them because of their nutritional properties. About a dozen of fungal species can be currently produced for food with sound industrial and economic bases. Notwithstanding, this production is threatened by biotic and abiotic factors that make it necessary to improve the fungal strains currently used in industry. Breeding of edible basidiomycetes, however, has been mainly empirical and slow since the genetic tools useful in the selection of the new genetic material to be introduced in the commercial strains have not been developed for these fungi as it was for other organisms. In this review we will discuss the main genetic factors that should be considered to develop breeding approaches and tools for higher basidiomycetes. These factors are (i) the genetic system controlling fungal mating; (ii) the genomic structure and organisation of these fungi; and (iii) the identification of genes involved in the control of quantitative traits. We will discuss the weight of these factors using the oyster mushroom Pleurotus ostreatus as a model organism for most of the edible fungi cultivated industrially.
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Affiliation(s)
- L Ramírez
- Department of Agricultural Production, Public University of Navarra, Pamplona, Spain
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Florenzano R, Altuzarra R, Carvajal C, Weil K, Dörr A, Fullerton C, Gottlieb B, Baeza H, Ramírez L, Barcos P, Cerda X, Donoso R. [Improving the quality of clinical interview teaching: evaluation of an intervention with medical students]. Rev Med Chil 2000; 128:294-300. [PMID: 10962871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
BACKGROUND Quality of clinical interview is a key issue both for patient satisfaction and for diagnostic efficiency. Its adequacy relates to better clinical diagnosis treatment plans and patient compliance. AIM To measure the quality of interviews performed by medical students in three Chilean medical schools before receiving specific training on the subject and to compare the scores obtained after introductory courses on interview. MATERIAL AND METHODS The interviews were videotaped and then evaluated using an objective scale, that measures 33 skills grouped in six areas: opening, problem exploration, non verbal facilitation, interpersonal patient reaction and closing. The students were assigned to an experimental group that received an interactive workshop with role-plays, vignettes and videotape feedback, and to a non intervention group that received the usual bedside training on medical interviews. RESULTS Both groups shared the same skill level before the training, with better scores on nonverbal, patient reaction and problem exploration, and worse ones on closing and interpersonal skills. Comparing pre and post-test results, the overall score improved in the experimental group (from 33.2 to 38.3, p = 0.002) and worsened among non intervened students. There were statistically significant changes for opening (p < 0.002), problem exploration (p < 0.05), non verbal facilitation (p < 0.0001) and closing (p < 0.0001). CONCLUSIONS It is important to train students not only in specific knowledge contents but in the process of interview. This training should encourage the development of empathy and closing skills.
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Abstract
We studied the left ventricular function and cardiac autonomic nervous system balance variations during two different stages of the menstrual cycle. These two variables, as well as plasmatic estradiol and progesterone concentrations, were measured in a drug-free state in 20 women (29+/-6 year-old) with regular menstrual periods. A clinical evaluation, an echo-Doppler and a Valsalva manoeuvre were performed in all the patients on the third day of their menstrual cycle (follicular phase) and three days prior to their next menstrual cycle (luteinizing phase). When comparing the results obtained in these two phases, a statistically significant increase was put forward in plasmatic estradiol (50.6+/-24 vs. 127.3+/-52.8 pg/ml) and progesterone (0.37+/-0.42 vs. 11.92+/-10.8 ng/ml) concentrations, Valsalva index (1.55+/-0.22 vs. 1.67+/-0.33; P=0.044) and E/A mitral wave ratio (1.63+/-0.36 vs. 1.75+/-0.35, P=0.02). The right and left atrial volumes, left ventricular volumes and ejection fraction were similar in the two menstrual phases studied. We conclude that the autonomic nervous system balance and the left ventricular diastolic function suffer significant changes during the luteinizing phase of the menstrual cycle in normal women.
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Affiliation(s)
- A J Fuenmayor
- Electrophysiology and Arrhythmia Section of the Cardiovascular Research Center and Department of Physiology, University of The Andes, Mérida, Venezuela.
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Abstract
To select the proper interventions that could prevent maternal mortality, adequate and appropriate maternal mortality data are needed. Nevertheless, the quality and quantity of information and the scope of maternal health- and death-related data are inadequate in many countries, particularly in the developing world. From January 1993 to December 1996 a surveillance program in maternal mortality was developed to conduct surveillance studies in the department of Guatemala, Guatemala. With an active surveillance system, our approach gave a more complete picture of maternal death and produced information on the specific causes of maternal mortality. Using multiple sources of information, we reviewed and analyzed all deaths of women of childbearing age (10 to 49 years). Each death was investigated to determine whether it was pregnancy-related or not. The maternal mortality ratio for the four-year study period was 156.2 deaths per 100,000 live births. Women 35 and older had a higher risk of maternal death than women under that age. Women who were 35-39 years old had a maternal death risk almost three times as high as women aged 20-24. For women who were 40 or older the risk was more than double that of women 20-24 years old. Overall, the two leading causes of maternal mortality were infection and hemorrhage. Vaginal deliveries where there was medical assistance had the highest rate of delivery-related maternal death from general infection. In deliveries attended by nonmedical personnel, delivery-related maternal deaths from hemorrhage were most frequently associated with retained placenta. Developing countries are called on to implement systems that can provide continuous and systematic data collection so that policymakers and health managers have adequate information to design proper interventions to save women's lives.
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Affiliation(s)
- E Kestler
- Epidemiologic Research Center in Reproductive Health, Hospital General San Juan de Dios, Guatemala.
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Larraya LM, Pérez G, Peñas MM, Baars JJ, Mikosch TS, Pisabarro AG, Ramírez L. Molecular karyotype of the white rot fungus Pleurotus ostreatus. Appl Environ Microbiol 1999; 65:3413-7. [PMID: 10427028 PMCID: PMC91513 DOI: 10.1128/aem.65.8.3413-3417.1999] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The white rot fungus Pleurotus ostreatus is an edible basidiomycete with increasing agricultural and biotechnological importance. Genetic manipulation and breeding of this organism are restricted because of the lack of knowledge about its genomic structure. In this study, we analyzed the genomic constitution of P. ostreatus by using pulsed-field gel electrophoresis optimized for the separation of its chromosomes. We have determined that it contains 11 pairs of chromosomes with sizes ranging from 1.4 to 4.7 Mbp. In addition to chromosome separation, the use of single-copy DNA probes allowed us to resolve the ambiguities caused by chromosome comigration. When the two nuclei present in the dikaryon were separated by protoplasting, analysis of their karyotypes revealed length polymorphisms affecting various chromosomes. This is, to our knowledge, the clearest chromosome separation available for this species.
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Affiliation(s)
- L M Larraya
- Departamento de Producción Agraria, Universidad Pública de Navarra, E-31006 Pamplona, Spain
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Larraya L, Peñas MM, Pérez G, Santos C, Ritter E, Pisabarro AG, Ramírez L. Identification of incompatibility alleles and characterisation of molecular markers genetically linked to the A incompatibility locus in the white rot fungus Pleurotus ostreatus. Curr Genet 1999; 34:486-93. [PMID: 9933361 DOI: 10.1007/s002940050424] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [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: 11/24/2022]
Abstract
Pleurotus ostreatus is a hetertothallic homobasidiomycete whose mating is controlled by a bifactorial tetrapolar genetic system. Although this mechanism is well accepted, there is a lack of knowledge about its molecular basis, as the incompatibility loci have not been cloned and sequenced. As a first step towards the elucidation of the molecular structure of the A-type incompatibility locus, molecular markers have been isolated which correspond to genomic sequences present in different strains of P. ostreatus but not in other higher basidiomycetae. These markers reveal single-copy genetic regions in which some degree of genetic variability can be detected.
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Affiliation(s)
- L Larraya
- Departamento de Producción Agraria, Universidad Pública de Navarra, E-31006 Pamplona, Spain
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