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Morel C, Gil P, Exbrayat A, Loire E, Charriat F, Prepoint B, Condachou C, Gimonneau G, Fall AG, Biteye B, Seck MT, Eloit M, Gutierrez S. Host influence on the eukaryotic virome of sympatric mosquitoes and abundance of diverse viruses with a broad host range. PLoS One 2024; 19:e0300915. [PMID: 38687731 PMCID: PMC11060559 DOI: 10.1371/journal.pone.0300915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/01/2024] [Indexed: 05/02/2024] Open
Abstract
Mosquitoes harbor a large diversity of eukaryotic viruses. Those viromes probably influence mosquito physiology and the transmission of human pathogens. Nevertheless, their ecology remains largely unstudied. Here, we address two key questions in virome ecology. First, we assessed the influence of mosquito species on virome taxonomic diversity and relative abundance. Contrary to most previous studies, the potential effect of the habitat was explicitly included. Thousands of individuals of Culex poicilipes and Culex tritaeniorhynchus, two vectors of viral diseases, were concomitantly sampled in three habitats over two years. A total of 95 viral taxa from 25 families were identified with meta-transcriptomics, with 75% of taxa shared by both mosquitoes. Viromes significantly differed by mosquito species but not by habitat. Differences were largely due to changes in relative abundance of shared taxa. Then, we studied the diversity of viruses with a broad host range. We searched for viral taxa shared by the two Culex species and Aedes vexans, another disease vector, present in one of the habitats. Twenty-six out of the 163 viral taxa were found in the three mosquitoes. These taxa encompassed 14 families. A database analysis supported broad host ranges for many of those viruses, as well as a widespread geographical distribution. Thus, the viromes of mosquitoes from the same genera mainly differed in the relative abundance of shared taxa, whereas differences in viral diversity dominated between mosquito genera. Whether this new model of virome diversity and structure applies to other mosquito communities remains to be determined.
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Affiliation(s)
- Côme Morel
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
| | - Patricia Gil
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
| | | | - Etienne Loire
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
| | | | | | | | - Geoffrey Gimonneau
- ASTRE, Cirad, INRAe, Univ Montpellier, Montpellier, France
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Assane Gueye Fall
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Biram Biteye
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Momar Talla Seck
- Institut Sénégalais de Recherches Agricoles/Laboratoire National de l’Elevage et de Recherches Vétérinaires (ISRA), Dakar-Hann, Senegal
| | - Marc Eloit
- Institut Pasteur, Université Paris Cité, Pathogen Discovery Laboratory, Paris, France
- Institut Pasteur, Université Paris Cité, The WOAH (OIE) Collaborating Center for The Detection and Identification in Humans of Emerging Animal Pathogens, Paris, France
- Ecole Nationale Vétérinaire d’Alfort, University of Paris-Est, Maisons-Alfort, France
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Brait N, Hackl T, Morel C, Exbrayat A, Gutierrez S, Lequime S. A tale of caution: How endogenous viral elements affect virus discovery in transcriptomic data. Virus Evol 2023; 10:vead088. [PMID: 38516656 PMCID: PMC10956553 DOI: 10.1093/ve/vead088] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/24/2023] [Accepted: 12/22/2023] [Indexed: 03/23/2024] Open
Abstract
Large-scale metagenomic and -transcriptomic studies have revolutionized our understanding of viral diversity and abundance. In contrast, endogenous viral elements (EVEs), remnants of viral sequences integrated into host genomes, have received limited attention in the context of virus discovery, especially in RNA-Seq data. EVEs resemble their original viruses, a challenge that makes distinguishing between active infections and integrated remnants difficult, affecting virus classification and biases downstream analyses. Here, we systematically assess the effects of EVEs on a prototypical virus discovery pipeline, evaluate their impact on data integrity and classification accuracy, and provide some recommendations for better practices. We examined EVEs and exogenous viral sequences linked to Orthomyxoviridae, a diverse family of negative-sense segmented RNA viruses, in 13 genomic and 538 transcriptomic datasets of Culicinae mosquitoes. Our analysis revealed a substantial number of viral sequences in transcriptomic datasets. However, a significant portion appeared not to be exogenous viruses but transcripts derived from EVEs. Distinguishing between transcribed EVEs and exogenous virus sequences was especially difficult in samples with low viral abundance. For example, three transcribed EVEs showed full-length segments, devoid of frameshift and nonsense mutations, exhibiting sufficient mean read depths that qualify them as exogenous virus hits. Mapping reads on a host genome containing EVEs before assembly somewhat alleviated the EVE burden, but it led to a drastic reduction of viral hits and reduced quality of assemblies, especially in regions of the viral genome relatively similar to EVEs. Our study highlights that our knowledge of the genetic diversity of viruses can be altered by the underestimated presence of EVEs in transcriptomic datasets, leading to false positives and altered or missing sequence information. Thus, recognizing and addressing the influence of EVEs in virus discovery pipelines will be key in enhancing our ability to capture the full spectrum of viral diversity.
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Affiliation(s)
- Nadja Brait
- Cluster of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen 9747 AG, The Netherlands
| | | | - Côme Morel
- ASTRE research unit, Cirad, INRAe, Université de Montpellier, Montpellier 34398, France
| | - Antoni Exbrayat
- ASTRE research unit, Cirad, INRAe, Université de Montpellier, Montpellier 34398, France
| | - Serafin Gutierrez
- ASTRE research unit, Cirad, INRAe, Université de Montpellier, Montpellier 34398, France
| | - Sebastian Lequime
- Cluster of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen 9747 AG, The Netherlands
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Kaboré DPA, Soma DD, Gil P, Kientega M, Sawadogo SP, Ouédraogo GA, Van de Perre P, Baldet T, Gutierrez S, Dabiré RK. Mosquito (Diptera: Culicidae) populations in contrasting areas of the western regions of Burkina Faso: species diversity, abundance and their implications for pathogen transmission. Parasit Vectors 2023; 16:438. [PMID: 38012775 PMCID: PMC10683243 DOI: 10.1186/s13071-023-06050-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Mosquitoes (Diptera: Culicidae) can have a significant negative impact on human health. The urbanization of natural environments and their conversion for agricultural use, as well as human population growth, may affect mosquito populations and increase the risk of emerging or re-emerging mosquito-borne diseases. We report on the variety and number of adult mosquitoes found in four environments with varying degrees of human impact (rural, urban, rice fields, and forest) located in a savannah zone of West Africa. METHODS Mosquitoes were collected from two regions (Hauts-Bassins and Sud-Ouest) of Burkina Faso during five periods between August 2019 and June 2021. Sampling sites were grouped according to environment. Mosquitoes were collected using BG-Sentinel traps and double net traps, and Prokopack Aspirators. Statistical analyses were performed using R software version 4.1.2. Logistic regression, using generalised mixed linear models, was used to test the effect of environment on mosquito abundance and diversity. Alpha diversity analysis was also performed, using the vegan package. RESULTS A total of 10,625 adult mosquitoes were collected, belonging to 33 species and five genera: Culex, Aedes, Anopheles, Mansonia, and Ficalbia. The most dominant species were Culex quinquefasciatus, Anopheles gambiae sensu lato and Aedes aegypti. Alpha diversity was similar in the two regions. Habitat had a significant effect on mosquito species richness, the Shannon index and the Simpson index. The rural environment had the highest species richness (n = 28) followed by the forest environment (n = 24). The highest number of mosquitoes (4977/10,625) was collected in the urban environment. CONCLUSIONS The species composition of the mosquito populations depended on the type of environment, with fewer species in environments with a high human impact such as urban areas and rice fields. Due to the diversity and abundance of the mosquito vectors, the human populations of all of the environments examined are considered to be at potential risk of mosquito-borne diseases.
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Affiliation(s)
- Didier P Alexandre Kaboré
- Institut de Recherche en Sciences de la Santé (IRSS), 01BP 545, Bobo-Dioulasso, Burkina Faso.
- Université Nazi BONI, Bobo-Dioulasso, Burkina Faso.
| | - Dieudonné Diloma Soma
- Institut de Recherche en Sciences de la Santé (IRSS), 01BP 545, Bobo-Dioulasso, Burkina Faso
- Université Nazi BONI, Bobo-Dioulasso, Burkina Faso
| | - Patricia Gil
- ASTRE Research Unit, CIRAD, INRAe, Montpellier University, Montpellier, France
| | - Mahamadi Kientega
- Institut de Recherche en Sciences de la Santé (IRSS), 01BP 545, Bobo-Dioulasso, Burkina Faso
- Université Nazi BONI, Bobo-Dioulasso, Burkina Faso
| | - Simon P Sawadogo
- Institut de Recherche en Sciences de la Santé (IRSS), 01BP 545, Bobo-Dioulasso, Burkina Faso
| | | | - Philippe Van de Perre
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, EFS; CHU Montpellier, Montpellier, France
| | - Thierry Baldet
- ASTRE Research Unit, CIRAD, INRAe, Montpellier University, Montpellier, France
| | - Serafin Gutierrez
- ASTRE Research Unit, CIRAD, INRAe, Montpellier University, Montpellier, France
| | - Roch K Dabiré
- Institut de Recherche en Sciences de la Santé (IRSS), 01BP 545, Bobo-Dioulasso, Burkina Faso.
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Cicchetti A, Gioscio E, De Santis MC, Seibold P, Azria D, Dunning A, Sperk E, Rosenstein BS, Talbot C, Vega A, Veldeman L, Gutierrez S, Webb A, Franco NR, Massi MC, Mapelli A, Ieva F, Rattay T, West CML, Rancati T. Managing RT Schedules of Early-Stage Breast Cancer Patients with a Genetic-Dosimetric Validated Model for Late Fibrosis. Int J Radiat Oncol Biol Phys 2023; 117:e170-e171. [PMID: 37784779 DOI: 10.1016/j.ijrobp.2023.06.1011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Define a multifactorial risk prediction model for RT-induced fibrosis and investigate the benefit of a personalized approach for breast cancer (BC) patients (pts) treated with whole breast RT. MATERIALS/METHODS In a previous study, we confirmed the predictive role of 30 SNPs from the literature and built an interaction aware Polygenic Risk Score (PRS, following the methods from Franco RO 2021) for Late Fibrosis (FG2+) on a cohort of 1500 pts from the REQUITE EU/USA prospective observational study. The PRS weights the radiosensitive (RS) and radioresistant (RR) genetic components and can be included in NTCP models. In a subgroup from the same cohort (390 pts), we have also confirmed an NTCP model based on biologically Equivalent Uniform Dose (BEUD) from PTV DVHs for pts treated at 40-50 Gy and no RT boost. Here, we combine PRS and BEUD into a sigmoid model allowing PRS to modulate BEUD50 (BEUD leading to 50% FG2+), i.e., we permitted a personalized BEUD50. We can also consider this as translating the PRS into a personalized equivalent BEUD, which is added/subtracted to the treatment BEUD. We evaluated model performances through ROC-AUC, calibration plot and Precision-Recall AUC. RESULTS A total of 381 pts had complete dosimetric/genetic data, prescribed dose 40-50 Gy, and no fibrotic alteration at RT start. We scored FG2+ in 87 pts (23%). PRS ranged from -13 (more RR pts) to 7 (more RS), and a unit in PRS corresponds to 5.3 Gy BEUD or 3 Gy in EQ EUD2 Gy. Table 1 summarizes model performances, with details for subgroups below/above the quartiles I/III of the BEUD distribution. The PRS-only model correctly describes the toxicity rates in the whole population (calibration slope/offset = 0/1). Still, it overestimates/underestimates the absolute risks in the low/high dose ranges. The integrated model improves AUC-ROC and AUC-PRC by 5% and 10% and guarantees a better calibration in pts receiving low/high BEUD to the PTV. CONCLUSION We developed a multifactorial model for FG2+ based on two previously validated models and reported the improvement against single-factor models. The BEUD+PRS model is suitable for assisting clinicians in managing early-stage BC pts. The number of fractions or the daily dose could be reduced for RS pts. The integrated model resulted in a possible quantitative tool for driving the planning decision process. Also, it showed a better performance in the high BEUD region, suggesting the potential value of its extension toward RT including boost or ultra hypofractionation. We are testing this extension in the whole REQUITE cohort.
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Affiliation(s)
- A Cicchetti
- Fondazione IRCCS Istituto Nazionale dei Tumori, Data Science Unit, Milan, Italy
| | - E Gioscio
- Fondazione IRCCS Istituto Nazionale dei Tumori, Data Science Unit, Milan, Italy
| | - M C De Santis
- Fondazione IRCCS Istituto Nazionale dei Tumori, Department of Radiation Oncology, Milan, Italy
| | - P Seibold
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - D Azria
- Institut du Cancer de Montpellier, Montpellier, France
| | - A Dunning
- University of Cambridge, Cambridge, United Kingdom
| | - E Sperk
- Department of Radiation Oncology, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - B S Rosenstein
- Icahn School of Medicine at Mount Sinai, Department of Radiation Oncology, New York, NY
| | - C Talbot
- University of Leicester, Leicester, United Kingdom
| | - A Vega
- Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - L Veldeman
- Ghent University Hospital, Ghent, Belgium
| | - S Gutierrez
- Research Institute of the University Hospital Vall d'Hebron and Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain
| | - A Webb
- University of Leicester, Leicester, United Kingdom
| | | | | | | | - F Ieva
- Politecnico di Milano, Milan, Italy
| | - T Rattay
- University of Leicester, Cancer Research Centre, Leicester, United Kingdom
| | - C M L West
- The University of Manchester, Alderley Edge, United Kingdom
| | - T Rancati
- Fondazione IRCCS Istituto Nazionale dei Tumori, Data Science Unit, Milan, Italy
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Gil P, Exbrayat A, Loire E, Rakotoarivony I, Charriat F, Morel C, Baldet T, Boisseau M, Marie A, Frances B, L’Ambert G, Bessat M, Otify Y, Goffredo M, Mancini G, Busquets N, Birnberg L, Talavera S, Aranda C, Ayari E, Mejri S, Sghaier S, Bennouna A, El Rhaffouli H, Balenghien T, Chlyeh G, Fassi Fihri O, Reveillaud J, Simonin Y, Eloit M, Gutierrez S. Spatial scale influences the distribution of viral diversity in the eukaryotic virome of the mosquito Culex pipiens. Virus Evol 2023; 9:vead054. [PMID: 37719779 PMCID: PMC10504824 DOI: 10.1093/ve/vead054] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 06/22/2023] [Accepted: 08/23/2023] [Indexed: 09/19/2023] Open
Abstract
Our knowledge of the diversity of eukaryotic viruses has recently undergone a massive expansion. This diversity could influence host physiology through yet unknown phenomena of potential interest to the fields of health and food production. However, the assembly processes of this diversity remain elusive in the eukaryotic viromes of terrestrial animals. This situation hinders hypothesis-driven tests of virome influence on host physiology. Here, we compare taxonomic diversity between different spatial scales in the eukaryotic virome of the mosquito Culex pipiens. This mosquito is a vector of human pathogens worldwide. The experimental design involved sampling in five countries in Africa and Europe around the Mediterranean Sea and large mosquito numbers to ensure a thorough exploration of virus diversity. A group of viruses was found in all countries. This core group represented a relatively large and diverse fraction of the virome. However, certain core viruses were not shared by all host individuals in a given country, and their infection rates fluctuated between countries and years. Moreover, the distribution of coinfections in individual mosquitoes suggested random co-occurrence of those core viruses. Our results also suggested differences in viromes depending on geography, with viromes tending to cluster depending on the continent. Thus, our results unveil that the overlap in taxonomic diversity can decrease with spatial scale in the eukaryotic virome of C. pipiens. Furthermore, our results show that integrating contrasted spatial scales allows us to identify assembly patterns in the mosquito virome. Such patterns can guide future studies of virome influence on mosquito physiology.
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Affiliation(s)
- Patricia Gil
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Antoni Exbrayat
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Etienne Loire
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Ignace Rakotoarivony
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Florian Charriat
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Côme Morel
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Thierry Baldet
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Michel Boisseau
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | | | | | | | - Mohamed Bessat
- Department of Parasitology, Faculty of Veterinary Medicine, Alexandria University, Alexandria 5410012, Egypt
| | - Yehia Otify
- Department of Parasitology, Faculty of Veterinary Medicine, Alexandria University, Alexandria 5410012, Egypt
| | - Maria Goffredo
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise ‘G. Caporale’, Teramo 64100, Italy
| | - Giuseppe Mancini
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise ‘G. Caporale’, Teramo 64100, Italy
| | - Núria Busquets
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
| | - Lotty Birnberg
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
| | - Sandra Talavera
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
| | - Carles Aranda
- IRTA. Programa de Sanitat Animal. Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Spain
- Servei de Control de Mosquits del Consell Comarcal del Baix Llobregat, Barcelona 08980, Spain
| | - Emna Ayari
- Institut de la Recherche Vétérinaire de Tunisie - Université Tunis El Manar, Tunis 1068, Tunisia
| | - Selma Mejri
- Institut de la Recherche Vétérinaire de Tunisie - Université Tunis El Manar, Tunis 1068, Tunisia
| | - Soufien Sghaier
- Institut de la Recherche Vétérinaire de Tunisie - Université Tunis El Manar, Tunis 1068, Tunisia
| | - Amal Bennouna
- Department of Animal Pathology and Public Health, Hassan II Agronomy & Veterinary Institute, Rabat BP 6202, Morocco
| | | | - Thomas Balenghien
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
- Department of Animal Pathology and Public Health, Hassan II Agronomy & Veterinary Institute, Rabat BP 6202, Morocco
| | - Ghita Chlyeh
- Département de Production, Protection et Biotechnologies Végétales, Unité de Zoologie, Institute of Agronomy and Veterinary Medicine Hassan II, Rabat BP 6202, Morocco
| | - Ouafaa Fassi Fihri
- Department of Animal Pathology and Public Health, Hassan II Agronomy & Veterinary Institute, Rabat BP 6202, Morocco
| | - Julie Reveillaud
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
| | - Yannick Simonin
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, Montpellier 34394, France
| | - Marc Eloit
- Institut Pasteur, Université Paris Cité, Pathogen Discovery Laboratory, Paris 75015, France
- Institut Pasteur, The OIE Collaborating Centre for Detection and Identification in Humans of Emerging Animal Pathogens, Paris 75724, France
- École nationale vétérinaire d’Alfort, Maisons-Alfort 94700, France
| | - Serafin Gutierrez
- ASTRE, CIRAD, INRAE, University of Montpellier, Montpellier, Languedoc-Roussillon 34398, France
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Tinto B, Kaboré DPA, Kagoné TS, Constant O, Barthelemy J, Kiba-Koumaré A, Van de Perre P, Dabiré RK, Baldet T, Gutierrez S, Gil P, Kania D, Simonin Y. Screening of Circulation of Usutu and West Nile Viruses: A One Health Approach in Humans, Domestic Animals and Mosquitoes in Burkina Faso, West Africa. Microorganisms 2022; 10:microorganisms10102016. [PMID: 36296292 PMCID: PMC9610586 DOI: 10.3390/microorganisms10102016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/08/2022] [Accepted: 10/10/2022] [Indexed: 11/26/2022] Open
Abstract
Usutu virus (USUV) and West Nile virus (WNV) are phylogenetically closely related arboviruses. These viruses mainly follow an enzootic cycle involving mosquitoes and birds, but they occasionally infect humans and other mammals, inducing neurotropic disorders. Since the discovery of USUV, only two human cases have been reported in Africa, including one in Burkina Faso in 2004. Since then, no studies have been conducted to measure the extent of the circulation of this virus in Burkina Faso, and no study regarding the circulation of WNV has been conducted. Our study aimed to determine the seroprevalence of USUV and WNV in blood donations and in animals (horses, dogs, chickens and pigeons) and to perform molecular screening in patients with febrile fever and in Culex quinquefasciatus and Aedes aegypti mosquitoes. The prevalence of USUV and WNV was studied by serological (ELISA and microneutralization tests) and molecular analyses (RT-qPCR) of mosquito, dog, domestic bird, horse, and human samples in Burkina Faso between 2019 and 2021. We detected a very active transmission of both viruses in Burkina Faso. WNV and USUV seroprevalence is particularly high in humans (19.16% and 14.17%, respectively) and horses (17.28% and 6.17%). Molecular screening did not detect WNV or USUV in the mosquito or human samples tested. Our study shows an active spread of USUV and WNV in Burkina Faso, especially for WNV. This study highlights the value of developing surveillance programs to better prevent, detect, and alert people to USUV and WNV circulation in both primary and incidental hosts.
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Affiliation(s)
- Bachirou Tinto
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, 34394 Montpellier, France
- Centre MURAZ, Institut National de Santé Publique (INSP), Bobo-Dioulasso 01, Burkina Faso
- Correspondence: (B.T.); (Y.S.)
| | | | | | - Orianne Constant
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, 34394 Montpellier, France
| | - Jonathan Barthelemy
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, 34394 Montpellier, France
| | | | - Philippe Van de Perre
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, 34394 Montpellier, France
| | - Roch Kounbobr Dabiré
- Institut de Recherche en Sciences de la Santé (IRSS), Bobo-Dioulasso 01, Burkina Faso
| | - Thierry Baldet
- ASTRE Research Unit, CIRAD, INRAe, Montpellier University, 34398 Montpellier, France
| | - Serafin Gutierrez
- ASTRE Research Unit, CIRAD, INRAe, Montpellier University, 34398 Montpellier, France
| | - Patricia Gil
- ASTRE Research Unit, CIRAD, INRAe, Montpellier University, 34398 Montpellier, France
| | - Dramane Kania
- Centre MURAZ, Institut National de Santé Publique (INSP), Bobo-Dioulasso 01, Burkina Faso
| | - Yannick Simonin
- Pathogenesis and Control of Chronic and Emerging Infections, INSERM, University of Montpellier, 34394 Montpellier, France
- Correspondence: (B.T.); (Y.S.)
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Bolaño-Guerra L, Lara-Mejía L, Heredia D, Cabrera-Miranda L, Turcott J, Gutierrez S, Corrales L, Martin C, Cardona A, Arrieta O. MA09.09 Perilesional Edema and Size of Brain Metastases as Prognostic and Predictive Factors to Local Therapy in Advanced Non-small-Cell Lung Cancer. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Constant O, Gil P, Barthelemy J, Bolloré K, Foulongne V, Desmetz C, Leblond A, Desjardins I, Pradier S, Joulié A, Sandoz A, Amaral R, Boisseau M, Rakotoarivony I, Baldet T, Marie A, Frances B, Reboul Salze F, Tinto B, Van de Perre P, Salinas S, Beck C, Lecollinet S, Gutierrez S, Simonin Y. One Health surveillance of West Nile and Usutu viruses: a repeated cross-sectional study exploring seroprevalence and endemicity in Southern France, 2016 to 2020. Euro Surveill 2022; 27:2200068. [PMID: 35748300 PMCID: PMC9229194 DOI: 10.2807/1560-7917.es.2022.27.25.2200068] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023] Open
Abstract
BackgroundWest Nile virus (WNV) and Usutu virus (USUV), two closely related flaviviruses, mainly follow an enzootic cycle involving mosquitoes and birds, but also infect humans and other mammals. Since 2010, their epidemiological situation may have shifted from irregular epidemics to endemicity in several European regions; this requires confirmation, as it could have implications for risk assessment and surveillance strategies.AimTo explore the seroprevalence in animals and humans and potential endemicity of WNV and USUV in Southern France, given a long history of WNV outbreaks and the only severe human USUV case in France in this region.MethodsWe evaluated the prevalence of WNV and USUV in a repeated cross-sectional study by serological and molecular analyses of human, dog, horse, bird and mosquito samples in the Camargue area, including the city of Montpellier, between 2016 and 2020.ResultsWe observed the active transmission of both viruses and higher USUV prevalence in humans, dogs, birds and mosquitoes, while WNV prevalence was higher in horses. In 500 human samples, 15 were positive for USUV and 6 for WNV. Genetic data showed that the same lineages, WNV lineage 1a and USUV lineage Africa 3, were found in mosquitoes in 2015, 2018 and 2020.ConclusionThese findings support existing literature suggesting endemisation in the study region and contribute to a better understanding of USUV and WNV circulation in Southern France. Our study underlines the importance of a One Health approach for the surveillance of these viruses.
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Affiliation(s)
- Orianne Constant
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
| | - Patricia Gil
- ASTRE research unit, CIRAD, INRAe, Montpellier University, Montpellier, France
| | - Jonathan Barthelemy
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
| | - Karine Bolloré
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
| | - Vincent Foulongne
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
| | - Caroline Desmetz
- BioCommunication en CardioMétabolique (BC2M), Montpellier University, Montpellier, France
| | - Agnès Leblond
- EPIA, UMR 0346, Epidemiologie des maladies animales et zoonotiques, INRAE, VetAgro Sup, Marcy l'Etoile, France
| | - Isabelle Desjardins
- University of Lyon, VetAgro Sup, GREMERES-ICE Lyon Equine Research Center, Marcy l'Etoile, France
| | | | - Aurélien Joulié
- National veterinary school of Toulouse, Université de Toulouse, Toulouse, France
| | - Alain Sandoz
- Aix Marseille Université - CNRS, UMR 7376, Laboratoire Chimie de l'Environnement, Marseille, France
| | - Rayane Amaral
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for equine diseases, Maisons-Alfort, France
| | - Michel Boisseau
- ASTRE research unit, CIRAD, INRAe, Montpellier University, Montpellier, France
| | | | - Thierry Baldet
- ASTRE research unit, CIRAD, INRAe, Montpellier University, Montpellier, France
| | | | | | | | - Bachirou Tinto
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
| | - Philippe Van de Perre
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
| | - Sara Salinas
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
| | - Cécile Beck
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for equine diseases, Maisons-Alfort, France
| | - Sylvie Lecollinet
- CIRAD, UMR ASTRE, CRVC, Petit Bourg, France
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for equine diseases, Maisons-Alfort, France
| | - Serafin Gutierrez
- ASTRE research unit, CIRAD, INRAe, Montpellier University, Montpellier, France
| | - Yannick Simonin
- Pathogenesis and Control of Chronic and Emerging Infections, Montpellier University, INSERM, EFS (etablissement français du sang), Montpellier, France
- ASTRE research unit, CIRAD, INRAe, Montpellier University, Montpellier, France
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9
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Gutierrez S, Muñiz G, Serrano C, Martín J, Pérez-Rozos A. External audit of a recently installed versa HD accelerator (elekta). Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00346-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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10
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Gil P, Dupuy V, Koual R, Exbrayat A, Loire E, Fall AG, Gimonneau G, Biteye B, Talla Seck M, Rakotoarivony I, Marie A, Frances B, Lambert G, Reveillaud J, Balenghien T, Garros C, Albina E, Eloit M, Gutierrez S. A library preparation optimized for metagenomics of RNA viruses. Mol Ecol Resour 2021; 21:1788-1807. [PMID: 33713395 DOI: 10.1111/1755-0998.13378] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 11/28/2022]
Abstract
Our understanding of the viral communities associated to animals has not yet reached the level attained on the bacteriome. This situation is due to, among others, technical challenges in adapting metagenomics using high-throughput sequencing to the study of RNA viromes in animals. Although important developments have been achieved in most steps of viral metagenomics, there is yet a key step that has received little attention: the library preparation. This situation differs from bacteriome studies in which developments in library preparation have largely contributed to the democratisation of metagenomics. Here, we present a library preparation optimized for metagenomics of RNA viruses from insect vectors of viral diseases. The library design allows a simple PCR-based preparation, such as those routinely used in bacterial metabarcoding, that is adapted to shotgun sequencing as required in viral metagenomics. We first optimized our library preparation using mock viral communities and then validated a full metagenomic approach incorporating our preparation in two pilot studies with field-caught insect vectors; one including a comparison with a published metagenomic protocol. Our approach provided a fold increase in virus-like sequences compared to other studies, and nearly-full genomes from new virus species. Moreover, our results suggested conserved trends in virome composition within a population of a mosquito species. Finally, the sensitivity of our approach was compared to a commercial diagnostic PCR for the detection of an arbovirus in field-caught insect vectors. Our approach could facilitate studies on viral communities from animals and the democratization of metagenomics in community ecology of viruses.
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Affiliation(s)
- Patricia Gil
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Virginie Dupuy
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Rachid Koual
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Antoni Exbrayat
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Etienne Loire
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Assane G Fall
- Laboratoire National de l'Elevage et de Recherches Vétérinaires, Institut Sénégalais de Recherches Agricoles (ISRA), Dakar-Hann, Senegal
| | - Geoffrey Gimonneau
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France.,Laboratoire National de l'Elevage et de Recherches Vétérinaires, Institut Sénégalais de Recherches Agricoles (ISRA), Dakar-Hann, Senegal
| | - Biram Biteye
- Laboratoire National de l'Elevage et de Recherches Vétérinaires, Institut Sénégalais de Recherches Agricoles (ISRA), Dakar-Hann, Senegal
| | - Momar Talla Seck
- Laboratoire National de l'Elevage et de Recherches Vétérinaires, Institut Sénégalais de Recherches Agricoles (ISRA), Dakar-Hann, Senegal
| | - Ignace Rakotoarivony
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | | | | | | | - Julie Reveillaud
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France
| | - Thomas Balenghien
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Claire Garros
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Emmanuel Albina
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
| | - Marc Eloit
- Pathogen Discovery Laboratory, Institut Pasteur, Paris, France.,The OIE Collaborating Centre for Detection and Identification in Humans of Emerging Animal Pathogens, Institut Pasteur, Paris, France.,École nationale vétérinaire d'Alfort, Maisons-Alfort, France
| | - Serafin Gutierrez
- ASTRE, Cirad, INRAE, University of Montpellier, Montpellier, France.,Cirad, UMR ASTRE, Montpellier, F-34398, France
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11
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Constant O, Bollore K, Clé M, Barthelemy J, Foulongne V, Chenet B, Gomis D, Virolle L, Gutierrez S, Desmetz C, Moares RA, Beck C, Lecollinet S, Salinas S, Simonin Y. Evidence of Exposure to USUV and WNV in Zoo Animals in France. Pathogens 2020; 9:pathogens9121005. [PMID: 33266071 PMCID: PMC7760666 DOI: 10.3390/pathogens9121005] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/25/2020] [Accepted: 11/29/2020] [Indexed: 12/12/2022] Open
Abstract
West Nile virus (WNV) and Usutu virus (USUV) are zoonotic arboviruses. These flaviviruses are mainly maintained in the environment through an enzootic cycle involving mosquitoes and birds. Horses and humans are incidental, dead-end hosts, but can develop severe neurological disorders. Nevertheless, there is little data regarding the involvement of other mammals in the epidemiology of these arboviruses. In this study, we performed a serosurvey to assess exposure to these viruses in captive birds and mammals in a zoo situated in the south of France, an area described for the circulation of these two viruses. A total of 411 samples comprising of 70 species were collected over 16 years from 2003 to 2019. The samples were first tested by a competitive enzyme-linked immunosorbent assay. The positive sera were then tested using virus-specific microneutralization tests against USUV and WNV. USUV seroprevalence in birds was 10 times higher than that of WNV (14.59% versus 1.46%, respectively). Among birds, greater rhea (Rhea Americana) and common peafowl (Pavo cristatus) exhibited the highest USUV seroprevalence. Infections occurred mainly between 2016-2018 corresponding to a period of high circulation of these viruses in Europe. In mammalian species, antibodies against WNV were detected in one dama gazelle (Nanger dama) whereas serological evidence of USUV infection was observed in several Canidae, especially in African wild dogs (Lycaon pictus). Our study helps to better understand the exposure of captive species to WNV and USUV and to identify potential host species to include in surveillance programs in zoos.
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Affiliation(s)
- Orianne Constant
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Karine Bollore
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Marion Clé
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Jonathan Barthelemy
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Vincent Foulongne
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Baptiste Chenet
- Parc de Lunaret—Zoo de Montpellier, 34090 Montpellier, France; (B.C.); (D.G.); (L.V.)
| | - David Gomis
- Parc de Lunaret—Zoo de Montpellier, 34090 Montpellier, France; (B.C.); (D.G.); (L.V.)
| | - Laurie Virolle
- Parc de Lunaret—Zoo de Montpellier, 34090 Montpellier, France; (B.C.); (D.G.); (L.V.)
| | | | - Caroline Desmetz
- bBioCommunication en CardioMétabolique (BC2M), Montpellier University, 34000 Montpellier, France;
| | - Rayane Amaral Moares
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for Equine Diseases, 94704 Maisons-Alfort, France; (R.A.M.); (C.B.); (S.L.)
| | - Cécile Beck
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for Equine Diseases, 94704 Maisons-Alfort, France; (R.A.M.); (C.B.); (S.L.)
| | - Sylvie Lecollinet
- UMR 1161 Virology, ANSES, INRAE, ENVA, ANSES Animal Health Laboratory, EURL for Equine Diseases, 94704 Maisons-Alfort, France; (R.A.M.); (C.B.); (S.L.)
| | - Sara Salinas
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
| | - Yannick Simonin
- Pathogenesis and Control of Chronic Infections, University of Montpellier, INSERM, EFS, 34000 Montpellier, France; (O.C.); (K.B.); (M.C.); (J.B.); (V.F.); (S.S.)
- Correspondence: ; Tel.: +33-(0)4-3435-9114
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12
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Navarro Mendivil A, Gutierrez S, Bullock R, Buesa C. 1806P Final safety and efficacy data from CLEPSIDRA trial in 2L ED-SCLC. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1567] [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: 10/23/2022] Open
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13
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Navarro Mendivil A, Gutierrez S, Maes T, Bullock R, Ropacki M, Buesa C. CLEPSIDRA trial: A pilot, biomarker-guided study to assess safety, tolerability, dose finding and efficacy of iadademstat in combination with platinum-etoposide in patients with relapsed, extensive-stage small cell lung cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz264.015] [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: 11/12/2022] Open
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14
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Ropacki M, Navarro A, Maes T, Gutierrez S, Bullock R, Buesa C. P2.12-04 CLEPSIDRA: A Phase II Trial Combining Iadademstat with Platinum-Etoposide in Platinum-Sensitive Relapsed SCLC Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Morales Barrera R, Matos I, Gonzalez M, Suárez C, Ros J, Valverde C, Fernandez C, Hierro C, Serra E, Mateo J, Gutierrez S, Martín Liberal J, Quintana A, Dienstmann R, Serrano C, Garralda E, Carles J. Validation of the VIO prognostic index in patients with metastatic urothelial carcinoma treated with immune-checkpoint inhibitors. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz249.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Sicard A, Pirolles E, Gallet R, Vernerey MS, Yvon M, Urbino C, Peterschmitt M, Gutierrez S, Michalakis Y, Blanc S. A multicellular way of life for a multipartite virus. eLife 2019; 8:43599. [PMID: 30857590 PMCID: PMC6414197 DOI: 10.7554/elife.43599] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 02/26/2019] [Indexed: 11/13/2022] Open
Abstract
A founding paradigm in virology is that the spatial unit of the viral replication cycle is an individual cell. Multipartite viruses have a segmented genome where each segment is encapsidated separately. In this situation the viral genome is not recapitulated in a single virus particle but in the viral population. How multipartite viruses manage to efficiently infect individual cells with all segments, thus with the whole genome information, is a long-standing but perhaps deceptive mystery. By localizing and quantifying the genome segments of a nanovirus in host plant tissues we show that they rarely co-occur within individual cells. We further demonstrate that distinct segments accumulate independently in different cells and that the viral system is functional through complementation across cells. Our observation deviates from the classical conceptual framework in virology and opens an alternative possibility (at least for nanoviruses) where the infection can operate at a level above the individual cell level, defining a viral multicellular way of life.
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Affiliation(s)
- Anne Sicard
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Elodie Pirolles
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Romain Gallet
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | | | - Michel Yvon
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Cica Urbino
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France.,CIRAD, BGPI, INRA, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Michel Peterschmitt
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France.,CIRAD, BGPI, INRA, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | - Serafin Gutierrez
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
| | | | - Stéphane Blanc
- BGPI, INRA, CIRAD, Montpellier SupAgro, Université de Montpellier, Montpellier, France
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17
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Simonin Y, Sillam O, Carles MJ, Gutierrez S, Gil P, Constant O, Martin MF, Girard G, Van de Perre P, Salinas S, Leparc-Goffart I, Foulongne V. Human Usutu Virus Infection with Atypical Neurologic Presentation, Montpellier, France, 2016. Emerg Infect Dis 2019; 24:875-878. [PMID: 29664365 PMCID: PMC5938765 DOI: 10.3201/eid2405.171122] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Infection with Usutu virus (USUV) has been recently associated with neurologic disorders, such as encephalitis or meningoencephalitis, in humans. These findings indicate that USUV is a potential health threat. We report an acute human infection with USUV in France putatively associated with a clinical diagnosis of idiopathic facial paralysis.
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18
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Bennouna A, Gil P, El Rhaffouli H, Exbrayat A, Loire E, Balenghien T, Chlyeh G, Gutierrez S, Fihri OF. Identification of Eilat virus and prevalence of infection among Culex pipiens L. populations, Morocco, 2016. Virology 2019; 530:85-88. [PMID: 30782566 DOI: 10.1016/j.virol.2019.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 02/08/2019] [Accepted: 02/08/2019] [Indexed: 11/28/2022]
Abstract
Eilat virus (EILV) is described as one of the few alphaviruses restricted to insects. We report the record of a nearly-complete sequence of an alphavirus genome showing 95% identity with EILV during a metagenomic analysis performed on 1488 unblood-fed females and 1076 larvae of the mosquito Culex pipiens captured in Rabat (Morocco). Genetic distance and phylogenetic analyses placed the EILV-Morocco as a variant of EILV. The observed infection rates in both larvae and adults suggested an active circulation of the virus in Rabat and its maintenance in the environment either through vertical transmission or through horizontal infection of larvae in breeding sites. This is the first report of EILV out of Israel and in Culex pipiens populations.
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Affiliation(s)
- Amal Bennouna
- Department of animal pathology and public health. Hassan II Agronomy & Veterinary Medicine Institute, Rabat, Morocco
| | - Patricia Gil
- CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France
| | | | - Antoni Exbrayat
- CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France
| | - Etienne Loire
- CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France
| | - Thomas Balenghien
- Department of animal pathology and public health. Hassan II Agronomy & Veterinary Medicine Institute, Rabat, Morocco; CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France
| | - Ghita Chlyeh
- Département de Production, Protection et Biotechnologies Végétales, Unité de Zoologie, Hassan II Agronomy and Veterinary Medicine Institute, Rabat, Morocco
| | - Serafin Gutierrez
- CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France.
| | - Ouafaa Fassi Fihri
- Department of animal pathology and public health. Hassan II Agronomy & Veterinary Medicine Institute, Rabat, Morocco.
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19
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Yao K, Clifford J, Li S, LaDuca H, Hulick PJ, Xu J, Gutierrez S, Black MH. Abstract P1-09-02: Prevalence of genetic mutations in patients with second primary breast cancers. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-09-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Women newly diagnosed with primary breast cancer (PBC) often undergo multi-gene panel testing to determine their contralateral breast cancer (BC) risk and whether a contralateral prophylactic mastectomy is warranted. However, with the exception of BRCA1/2, gene-specific associations with contralateral or second PBC (SPBC) have not been established. Methods: The study sample was comprised of 83,278 women with BC referred to a single diagnostic laboratory for multi-gene panel testing. The frequency of pathogenic/likely pathogenic variants in clinically-actionable genes (CAG), including highly penetrant genes (HPG: BRCA1, BRCA2, TP53, PTEN) and moderately penetrant genes (MPG: ATM, CHEK2, PALB2, CDH1, NBN, NF1) was compared between women with a PBC and SPBC. Women with a SPBC <1 year from their first diagnosis were excluded. Logistic regression burden tests were used to test for associations between mutated genes and SPBC adjusting for age at diagnosis of first BC, histology, presence of first- or second-degree relative with BC, and race/ethnicity. Results: The study included 75,550 women with PBC and 7,728 with SPBC. The median (IQR) time between primaries for the SPBC group was 11 (6,17) years . Women with SPBC were slightly more likely to be Caucasian (67.8% vs. 63.4%; p<0.001), older when referred for genetic testing (mean difference 9.7 years, p<0.001), slightly younger at first BC diagnosis (mean difference 2.1 years, p<0.001) and slightly more likely to have >1 first or second degree relative with BC (62.2% vs. 60.8%; p=0.004) than PBC. Among women tested for all CAGs, 4,883 (8.1%) were carriers of pathogenic/likely pathogenic variants (11.1% SPBC vs. 7.8% PBC). CHEK2 was the most frequently mutated gene (3.4% SPBC vs. 2.3% PBC), followed by BRCA1 (2.7% SPBC vs.1.6% PBC), BRCA2 (2.2% SPBC vs. 1.8% PBC), and PALB2 (1.4% SPBC vs. 0.9% PBC). In fully adjusted models, women with SPBC were 1.38 times as likely (p=<0.0001) as women with PBC to test positive for a CAG (OR=1.35 for HPG and 1.34 for MPG). BRCA1 (OR=1.49; p<0.0001), followed by CHEK2 (OR=1.36; p<0.0001) and PALB2 (OR=1.53; p<0.001) were most significantly associated with SPBC. TP53, BARD1, ATM and BRCA2 were marginally associated with SPBC (p=0.01 to 0.06). When results were stratified by race/ethnicity, ORs among Caucasians were similar to those observed overall. Among African Americans, women with SPBC were 1.76 times as likely to carry a CAG (p<0.001) than their PBC counterparts. PALB2 (OR=2.69; p=0.002), BRCA2 (OR=1.85; p=.004), and TP53 (OR=3.88; p=.009) were most significantly associated with SPBC followed by BRCA1 (OR=1.63; p=.002). Analysis of gene associations for other racial/ethnic groups was limited by small sample size. Conclusions: There is a significantly higher prevalence of CAG mutations among women with SPBC, even after adjusting for age at diagnosis and family history. These findings support SPBC as a standalone indication for multigene panel testing. Additional studies aimed to assess cumulative risk of SPBC for CAG beyond BRCA1/2 are needed to help guide clinical management decisions for mutation carriers.
Citation Format: Yao K, Clifford J, Li S, LaDuca H, Hulick PJ, Xu J, Gutierrez S, Black MH. Prevalence of genetic mutations in patients with second primary breast cancers [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-09-02.
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Affiliation(s)
- K Yao
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
| | - J Clifford
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
| | - S Li
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
| | - H LaDuca
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
| | - PJ Hulick
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
| | - J Xu
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
| | - S Gutierrez
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
| | - MH Black
- NorthShore University HealthSystem, Evanston, IL; Ambry Genetics, Aliso Viejo, CA
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Martínez-González MA, Buil-Cosiales P, Corella D, Bulló M, Fitó M, Vioque J, Romaguera D, Martínez JA, Wärnberg J, López-Miranda J, Estruch R, Bueno-Cavanillas A, Arós F, Tur JA, Tinahones F, Serra-Majem L, Martín V, Lapetra J, Vázquez C, Pintó X, Vidal J, Daimiel L, Delgado-Rodríguez M, Matía P, Ros E, Fernández-Aranda F, Botella C, Portillo MP, Lamuela-Raventós RM, Marcos A, Sáez G, Gómez-Gracia E, Ruiz-Canela M, Toledo E, Alvarez-Alvarez I, Díez-Espino J, Sorlí JV, Basora J, Castañer O, Schröder H, Navarrete-Muñoz EM, Zulet MA, García-Rios A, Salas-Salvadó J, Corella D, Estruch R, Fitó M, Martínez-González MA, Ros E, Salas-Salvadó J, Babio N, Ros E, Sánchez-Tainta A, Martínez-González MA, Fitó M, Schröder H, Marcos A, Corella D, Wärnberg J, Martínez-González MA, Estruch R, Fernández-Aranda F, Botella C, Salas-Salvadó J, Razquin C, Bes-Rastrollo M, Sanchez Tainta A, Vázquez Z, SanJulian Aranguren B, Goñi E, Goñi L, Barrientos I, Canales M, Sayón-Orea MC, Rico A, Basterra Gortari J, 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L, Giner-Valero M, Monfort-Sáez R, Nadal-Sayol J, Pascual-Fuster V, Martínez-Pérez M, Riera C, Belda MV, Medina A, Miralles E, Ramírez-Esplugues MJ, Rojo-Furió M, Mattingley G, Delgado MA, Pages MA, Riofrío Y, Abuomar L, Blasco-Lafarga N, Tosca R, Lizán L, Guillem-Saiz P, Valcarce AM, Medina MD, Monfort R, de Valcárcel S, Tormo N, Felipe-Román O, Lafuente S, Navío EI, Aldana G, Crespo JV, Llosa JL, González-García L, Raga-Marí R, Pedret Llaberia R, Gonzalez R, Sagarra Álamo R, París Palleja F, Balsells J, Roca JM, Basora Gallisa T, Vizcaino J, Llobet Alpizarte P, Anguera Perpiñá C, Llauradó Vernet M, Caballero C, Garcia Barco M, Morán Martínez MD, García Rosselló J, Del Pozo A, Poblet Calaf C, Arcelin Zabal P, Floresví X, Ciutat Benet M, Palau Galindo A, Cabré Vila JJ, Dolz Andrés F, Boj Casajuana J, Ricard M, Saiz F, Isach A, Sanchez Marin Martinez M, Bulló M, Babio N, Becerra-Tomás N, Mestres G, Basora J, Mena-Sánchez G, Barrubés Piñol L, Gil Segura M, Papandreou C, Rosique Esteban 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Pertusa Martínez S, Cloquell Rodrigo B, Hernándis Marsán MV, Asensio A, Altozano Rodado MC, Ballester Baixauli JJ, Fernándis Brufal N, Martínez Vergara MC, Román Maciá J, Candela García I, Pedro Cases Pérez E, Tercero Maciá C, Mira Castejón LA, de los Ángeles García García I, Zazo JM, Gisbert Sellés C, Sánchez Botella C, Fiol M, Moñino M, Colom A, Konieczna J, Morey M, Zamanillo R, Galmés AM, Pereira V, Martín MA, Yáñez A, Llobera J, Ripoll J, Prieto R, Grases F, Costa A, Fernández-Palomeque C, Fortuny E, Noris M, Munuera S, Tomás F, Fiol F, Jover A, Janer JM, Vallespir C, Mattei I, Feuerbach N, del Mar Sureda M, Vega S, Quintana L, Fiol A, Amador M, González S, Coll J, Moyá A, Abete I, Cantero I, Cristobo C, Ibero-Baraibar I, Lezáun Burgui MD, Goñi Ruiz N, Bartolomé Resano R, Cano Cáceres E, Elcarte López T, Echarte Osacain E, Pérez Sanz B, Blanco Platero I, Andueza Azcárate SA, Gimeno Aznar A, Ursúa Sesma E, Ojeda Bilbao B, Martinez Jarauta J, Ugalde Sarasa L, Rípodas Echarte B, Güeto Rubio MV, Fernández-Crehuet Navajas J, Gutiérrez Bedmar M, García Rodriguez A, Mariscal Larrubia A, Carnero Varo M, Muñoz Bravo C, Barón-López FJ, Fernández García JC, Pérez-Farinós N, Moreno-Morales N, del C Rodríguez-Martínez M, Pérez-López J, Benavente-Marín JC, Crespo Oliva E, Contreras Fernández E, Carmona González FJ, Carabaño Moral R, Torres Moreno S, Martín Ruíz MV, Alcalá Cornide M, Fuentes Gómez V, Criado García J, Jiménez Morales AI, Delgado Casado N, Ortiz Morales A, Torres Peña JD, Gómez Delgado FJ, Rodríguez Cantalejo F, Caballero Villaraso J, Alcalá JF, Peña Orihuela PJ, Quintana Navarro G, Casas R, Domenech M, Viñas C, Castro-Barquero S, Ruiz-León AM, Sadurní M, Frontana G, Villanueva P, Gual M, Soriano R, Camafort M, Sierra C, Sacanella E, Sala-Vila A, Cots JM, Sarroca I, García M, Bermúdez N, Pérez A, Duaso I, de la Arada A, Hernández R, Simón C, de la Poza MA, Gil I, Vila M, Iglesias C, Assens N, Amatller M, Rams LL, Benet T, Fernández G, Teruel J, Azorin A, 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C, Aragoneses Isabel C, Sirur Flores MA, Ceballos de Diego M, Bescos Cáceres T, Peña Cereceda Y, Martínez Abad M, Cabrera Vela R, González Cerrajero M, Rubio Herrera MA, Torrego Ellacuría M, Barabash Bustelo A, Ortiz Ramos M, Garin Barrutia U, Baños R, García-Palacios A, Cerdá Micó C, Estañ Capell N, Iradi A, Fandos Sánchez M. Cohort Profile: Design and methods of the PREDIMED-Plus randomized trial. Int J Epidemiol 2018; 48:387-388o. [PMID: 30476123 DOI: 10.1093/ije/dyy225] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2018] [Indexed: 01/04/2023] Open
Affiliation(s)
- Miguel A Martínez-González
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Pilar Buil-Cosiales
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
- Atención Primaria, Servicio Navarro de Salud-Osasunbidea, Pamplona, Spain
| | - Dolores Corella
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Valencia, Valencia, Spain
| | - Monica Bulló
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Rovira i Virgili University, Department of Biochemistry and Biotechnology, Human Nutrition Unit, IISPV, Hospital Universitari Sant Joan de Reus, Reus, Spain
| | - Montserrat Fitó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Unit of Cardiovascular Risk and Nutrition, Institut Hospital del Mar de Investigaciones Médicas Municipal d’Investigació Mèdica (IMIM), Barcelona, Spain
| | - Jesús Vioque
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Miguel Hernandez University, ISABIAL-FISABIO, Alicante, Spain
| | - Dora Romaguera
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Clinical Epidemiology and Public Health Department, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca, Spain
| | - J Alfredo Martínez
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- University of Navarra, Department of Nutrition, Food Science and Physiology, IDISNA, Pamplona, Spain
| | - Julia Wärnberg
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Nursing, School of Health Sciences, University of Málaga-IBIMA, Málaga, Spain
| | - Jose López-Miranda
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Internal Medicine, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain
| | - Ramón Estruch
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Internal Medicine, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Aurora Bueno-Cavanillas
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Granada, Granada, Spain
| | - Fernando Arós
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Cardiology, University Hospital Araba, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
| | - Josep A Tur
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Research Group on Community Nutrition & Oxidative Stress, University of Balearic Islands, Palma de Mallorca, Spain
| | - Francisco Tinahones
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Virgen de la Victoria Hospital, Department of Endocrinology, University of Málaga, Málaga, Spain
| | - Lluis Serra-Majem
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- University of Las Palmas de Gran Canaria, Research Institute of Biomedical and Health Sciences (IUIBS), Preventive Medicine Service, Centro Hospitalario Universitario Insular Materno Infantil (CHUIMI), Canarian Health Service, Las Palmas, Spain
| | - Vicente Martín
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Institute of Biomedicine (IBIOMED), University of León, León, Spain
| | - Jose Lapetra
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Family Medicine, Research Unit, Distrito Sanitario Atención Primaria Sevilla, Sevilla, Spain
| | - Clotilde Vázquez
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Endocrinology, Fundación Jiménez-Díaz, Madrid, Spain
| | - Xavier Pintó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Lipids and Vascular Risk Unit, Internal Medicine, Hospital Universitario de Bellvitge, Hospitalet de Llobregat, Barcelona, Spain
| | - Josep Vidal
- CIBER Diabetes y enfermedades Metabólicas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Endocrinology, IDIBAPS, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Lidia Daimiel
- Nutritional Genomics and Epigenomics Group, IMDEA Food, CEI UAM + CSIC, Madrid, Spain
| | - Miguel Delgado-Rodríguez
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Division of Preventive Medicine, Faculty of Medicine, University of Jaén, Jaén, Spain
| | - Pilar Matía
- Department of Endocrinology and Nutrition, Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Emilio Ros
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Lipid Clinic, Department of Endocrinology and Nutrition, Institut d’Investigacions Biomèdiques August Pi Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain
| | - Fernando Fernández-Aranda
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Eating Disorders Unit, Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Hospitalet del Llobregat, Barcelona, Spain
| | - Cristina Botella
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Basic and Clinical Psychology and Psychobiology, Universitat Jaume I, Castellón de la Plana, Spain
| | - María Puy Portillo
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Nutrition and Food Science, Faculty of Pharmacy and Lucio Lascaray Research Center, Universidad del País Vasco (UPV/EHU), Vitoria, Spain
| | - Rosa M Lamuela-Raventós
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Nutrition, Food Science and Gastronomy, XaRTA, INSA, -UB, School of Pharmacy and Food Science, University of Barcelona, Barcelona, Spain
| | - Ascensión Marcos
- Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), Madrid, Spain
| | - Guillermo Sáez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine and Odontology, University Hospital Dr. Peset, University of Valencia, Valencia, Spain
| | | | - Miguel Ruiz-Canela
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
| | - Estefania Toledo
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
| | - Ismael Alvarez-Alvarez
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
| | - Javier Díez-Espino
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, IDISNA, Pamplona, Spain
- Atención Primaria, Servicio Navarro de Salud-Osasunbidea, Pamplona, Spain
| | - José V Sorlí
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, University of Valencia, Valencia, Spain
| | - Josep Basora
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Rovira i Virgili University, Department of Biochemistry and Biotechnology, Human Nutrition Unit, IISPV, Hospital Universitari Sant Joan de Reus, Reus, Spain
| | - Olga Castañer
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Unit of Cardiovascular Risk and Nutrition, Institut Hospital del Mar de Investigaciones Médicas Municipal d’Investigació Mèdica (IMIM), Barcelona, Spain
| | - Helmut Schröder
- Unit of Cardiovascular Risk and Nutrition, Institut Hospital del Mar de Investigaciones Médicas Municipal d’Investigació Mèdica (IMIM), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Eva María Navarrete-Muñoz
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Miguel Hernandez University, ISABIAL-FISABIO, Alicante, Spain
| | - Maria Angeles Zulet
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- University of Navarra, Department of Nutrition, Food Science and Physiology, IDISNA, Pamplona, Spain
| | - Antonio García-Rios
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Internal Medicine, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain
| | - Jordi Salas-Salvadó
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Rovira i Virgili University, Department of Biochemistry and Biotechnology, Human Nutrition Unit, IISPV, Hospital Universitari Sant Joan de Reus, Reus, Spain
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21
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Clé M, Salinas S, Lecollinet S, Beck C, Gutierrez S, Baldet T, Vande Perre P, Foulongne V, Simonin Y. [Usutu virus: the phantom menace]. Med Sci (Paris) 2018; 34:709-716. [PMID: 30230467 DOI: 10.1051/medsci/20183408018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Usutu virus, an arbovirus discovered in Africa in 1959, has spread over a large part of Europe over the last twenty years causing significant bird mortality as reported in France since 2015. The zoonotic risk, associated with this succession of avian epizootics in Europe, deserves to be taken into account even if human cases remain rare to date. Human infections are most often asymptomatic or present a benign clinical expression. However, neurological complications such as encephalitis or meningoencephalitis have been described. In addition, the recent description of an atypical case of facial paralysis in France suggests that the clinical spectrum of infections caused by Usutu virus is not fully characterized. Finally, the recent history of other arboviral outbreaks invites the scientific community to be extremely vigilant.
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Affiliation(s)
- Marion Clé
- Pathogenesis and control of chronic infections, Université de Montpellier, Inserm, EFS, 60, rue de Navacelle, 34000 Montpellier, France
| | - Sara Salinas
- Pathogenesis and control of chronic infections, Université de Montpellier, Inserm, EFS, 60, rue de Navacelle, 34000 Montpellier, France
| | - Sylvie Lecollinet
- Université Paris Est Créteil Val de Marne (UPEC), Anses animal health laboratory, UMR1161 virologie, INRA, Anses, École nationale vétérinaire d'Alfort (ENVA), Maisons-Alfort, France
| | - Cécile Beck
- Université Paris Est Créteil Val de Marne (UPEC), Anses animal health laboratory, UMR1161 virologie, INRA, Anses, École nationale vétérinaire d'Alfort (ENVA), Maisons-Alfort, France
| | - Serafin Gutierrez
- Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), UMR Animal, Santé, Territoire, Risques, Écosystèmes (ASTRE), F-34398 Montpellier, France
| | - Thierry Baldet
- ASTRE, CIRAD, INRA, Univ Montpellier, Montpellier, France
| | - Philippe Vande Perre
- Pathogenesis and control of chronic infections, Université de Montpellier, Inserm, EFS, 60, rue de Navacelle, 34000 Montpellier, France - Pathogenesis and control of chronic infections, Université de Montpellier, Inserm, EFS, CHU Montpellier, Montpellier, France
| | - Vincent Foulongne
- Pathogenesis and control of chronic infections, Université de Montpellier, Inserm, EFS, CHU Montpellier, Montpellier, France
| | - Yannick Simonin
- Pathogenesis and control of chronic infections, Université de Montpellier, Inserm, EFS, 60, rue de Navacelle, 34000 Montpellier, France
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22
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Camilletti MA, Ferraris J, Abeledo-Machado A, Converse A, Faraoni EY, Pisera D, Gutierrez S, Thomas P, Díaz-Torga G. Participation of membrane progesterone receptor α in the inhibitory effect of progesterone on prolactin secretion. J Neuroendocrinol 2018; 30:e12614. [PMID: 29869822 DOI: 10.1111/jne.12614] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 05/28/2018] [Accepted: 06/01/2018] [Indexed: 12/22/2022]
Abstract
The membrane progesterone receptors (mPRα, mPRβ, mPRγ, mPRδ and mPRε) are known to mediate rapid nongenomic progesterone functions in different cell types. However, the functions of these receptors in the pituitary have not been reported to date. In the present study, we show that the expression of mPRα was the highest among the mPRs in the rat anterior pituitary gland. Immunostaining of mPRα was detected in somatotrophs, gonadotrophs and lactotrophs. Interestingly, 63% of mPRα-positive cells within the pituitary were lactotrophs, suggesting that mPRα is involved in controlling prolactin (PRL) secretion in the pituitary. To test this hypothesis, rat pituitaries were incubated (1 hour) with either progesterone (P4) or the mPRα-specific agonist Org OD 02-0. PRL secretion was then measured by radioimmunoassay. The results of this experiment revealed that both P4 and Org OD 02-0 decreased PRL secretion. Moreover, the results from the GH3 cell line (CCL-82.1) showed that P4 and Org OD 02-0 inhibited PRL release, although the nuclear PR agonist R5020 was ineffective. Our investigation of the cellular mechanisms behind mPRα activity indicated that both P4 and Org OD 02-0 decreased cAMP accumulation, whereas R5020 was ineffective. In addition, the Org OD 02-0-effect on PRL release was blocked by pretreatment with pertussis toxin, an inhibitor of Go/Gi proteins. Because transforming growth factor (TGF)β1 is a potent inhibitor of PRL secretion in lactotrophs, we lastly evaluated whether TGFβ1 was activated by progesterone and whether this effect was mediated by mPRα. Our results showed that P4 and Org OD 02-0, but not R5020, increased active TGFβ1 levels. This effect was not observed when cells were transfected with mPRα-small interfering RNA. Taken together, these data provide new evidence suggesting that mPRα mediates the progesterone inhibitory effect on PRL secretion through both decreases in cAMP levels and activation of TGFβ1 in the lactotroph population.
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Affiliation(s)
- M A Camilletti
- Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina
| | - J Ferraris
- Facultad de Medicina, Instituto de Investigaciones Biomédicas (INBIOMED), UBA-CONICET, Buenos Aires, Argentina
| | - A Abeledo-Machado
- Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina
| | - A Converse
- Marine Science Institute, University of Texas at Austin, Port Aransas, TX, USA
| | - E Y Faraoni
- Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina
| | - D Pisera
- Facultad de Medicina, Instituto de Investigaciones Biomédicas (INBIOMED), UBA-CONICET, Buenos Aires, Argentina
| | - S Gutierrez
- Facultad de Ciencias Medicas, Centro de Microscopia Electrónica, Instituto de Investigaciones en Ciencias de la Salud (INICSA-CONICET), Universidad Nacional de Córdoba, Córdoba, Argentina
| | - P Thomas
- Marine Science Institute, University of Texas at Austin, Port Aransas, TX, USA
| | - G Díaz-Torga
- Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina
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23
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Eiden M, Gil P, Ziegler U, Rakotoarivony I, Marie A, Frances B, L'Ambert G, Simonin Y, Foulongne V, Groschup MH, Gutierrez S, Eloit M. Emergence of two Usutu virus lineages in Culex pipiens mosquitoes in the Camargue, France, 2015. Infect Genet Evol 2018; 61:151-154. [PMID: 29592838 DOI: 10.1016/j.meegid.2018.03.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 03/01/2018] [Accepted: 03/22/2018] [Indexed: 11/29/2022]
Abstract
Usutu virus (USUV) was detected in 11 Culex pipiens mosquito pools collected in 2015 in Camargue (France) using quantitative real-time RT-PCR assays. Phylogenetic analysis of recovered virus sequences identified USUV lineages Africa 2 and Africa 3, demonstrating the simultaneous occurrence of different strains within the mosquito population. This is the first report on USUV in mosquitoes from France that concurrently accompanied the emergence of Usutu virus in blackbirds and a human case in France during 2015/2016.
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Affiliation(s)
- Martin Eiden
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald, Insel Riems, Germany
| | - Patricia Gil
- CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, Université de Montpellier, CIRAD, INRA, Montpellier, France
| | - Ute Ziegler
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald, Insel Riems, Germany
| | - Ignace Rakotoarivony
- CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, Université de Montpellier, CIRAD, INRA, Montpellier, France
| | - Albane Marie
- EID Mediterranée, 165 Avenue Paul Rimbaud, 34184 Montpellier, France
| | - Benoit Frances
- EID Mediterranée, 165 Avenue Paul Rimbaud, 34184 Montpellier, France
| | - Grégory L'Ambert
- EID Mediterranée, 165 Avenue Paul Rimbaud, 34184 Montpellier, France
| | - Yannick Simonin
- Pathogenesis and Control of Chronic Infections, Université de Montpellier, INSERM, EFS, Montpellier, France
| | - Vincent Foulongne
- Pathogenesis and Control of Chronic Infections, Université de Montpellier, INSERM, EFS, Montpellier, France
| | - Martin H Groschup
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald, Insel Riems, Germany
| | - Serafin Gutierrez
- CIRAD, UMR ASTRE, F-34398 Montpellier, France; ASTRE, Université de Montpellier, CIRAD, INRA, Montpellier, France.
| | - Marc Eloit
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Pathogen Discovery Laboratory, Paris, France
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24
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Agboola F, Herring R, Ghamsary M, Handysides D, Gleason P, Rivera M, Gutierrez S. Towards improving healthy food access through
community-supported-agriculture-farmshare programs in food desert areas and
among low income populations. Ann Glob Health 2016. [DOI: 10.1016/j.aogh.2016.04.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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25
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Abstract
INTRODUCTION Preeclampsia is associated with abnormalities in the umbilical cord in several ways: morphological, biochemical and functional. Alteration in blood vessels of the placenta, decidua and circulatory system of the fetus might be related to factors that cause preeclampsia and may be associated with alterations of the umbilical cord. OBJECTIVES This study aimed to analyze the relationship between each type of umbilical cord abnormality and the different subtypes of hypertensive gestational disorders. METHODS We conducted a prospective study on consecutive autopsies and its placentas, looking for abnormalities in the umbilical cord's features and their clinical associations. RESULTS Umbilical cord abnormalities including length, diameter, insertion, entanglements, knots and coils were associated with maternal gestational hypertension. CONCLUSION In women with gestational hypertension, umbilical cord abnormalities are associated with fetal and neonatal consequences.
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Affiliation(s)
- M Olaya-C
- Department of Pathology, Pontificia Universidad Javeriana School of Medicine, Bogota, Colombia- San Ignacio University Hospital, Bogota, Colombia
| | | | - S H Galvis
- Pontificia Universidad Javeriana School of Medicine, Bogota, Colombia
| | - A M Ortiz
- Pontificia Universidad Javeriana School of Medicine, Bogota, Colombia
| | - S Gutierrez
- Pontificia Universidad Javeriana School of Medicine, Bogota, Colombia
| | - J E Bernal
- Institute of Human Genetics, the Medical School, Pontificia Universidad Javeriana, Bogota, and Universidad Tecnologica de Bolivar en Cartagena de Indias
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26
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Oterino A, Toriello M, Esteve-Codina A, Heath S, Castillo J, Fernandez J, Pons E, Gutierrez S, Palacio E, Quintanilla VG. HMTI-0197. Whole blood transcriptome analysis in migraine with aura patients: a case control study. J Headache Pain 2014. [PMCID: PMC4179914 DOI: 10.1186/1129-2377-15-s1-b24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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27
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Quintanilla VG, Toriello M, Castillo J, Fernandez J, Martinez-Nieto R, Montes S, Pons E, Gutierrez S, Palacio E, Oterino A. EHMTI-0101. Is inflammation atherogenic in neurological diseases? A case-control study with migraine and multiple sclerosis patients. J Headache Pain 2014. [PMCID: PMC4182048 DOI: 10.1186/1129-2377-15-s1-f20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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28
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Ramírez JH, Parra B, Gutierrez S, Arce RM, Jaramillo A, Ariza Y, Contreras A. Biomarkers of cardiovascular disease are increased in untreated chronic periodontitis: a case control study. Aust Dent J 2014; 59:29-36. [DOI: 10.1111/adj.12139] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2013] [Indexed: 11/29/2022]
Affiliation(s)
- JH Ramírez
- Periodontal Medicine Research Group; Dentistry School; Universidad del Valle; Cali Colombia
- School of Health Sciences; Universidad del Valle; Cali Colombia
| | - B Parra
- Department of Microbiology; School of Basic Sciences; Universidad del Valle; Colombia
| | - S Gutierrez
- Periodontal Medicine Research Group; Dentistry School; Universidad del Valle; Cali Colombia
| | - RM Arce
- Department of Periodontics; Georgia Regents University; Augusta GA USA
| | - A Jaramillo
- Periodontal Medicine Research Group; Dentistry School; Universidad del Valle; Cali Colombia
| | - Y Ariza
- School of Health Sciences; Universidad del Valle; Cali Colombia
| | - A Contreras
- Periodontal Medicine Research Group; Dentistry School; Universidad del Valle; Cali Colombia
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Gomez E, Heredia M, Jorge P, Lorenzo M, Gomez-Herreras J, Tamayo E, Gutierrez S, Alvarez E. Use of procalcitonin and white blood cells as combined predictors of infection in cardiac surgery patients. Crit Care 2014. [PMCID: PMC4068649 DOI: 10.1186/cc13405] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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30
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Soto JJ, Viveros ME, Gutierrez S, Hernandez SE, Rivera A, Cardiel MH. SAT0058 Biomarkers of Endothelial Dysfuncton in Rheumatoid Arthritis Compared with Diabetes Mellitus Type 2, Obesity and Healthy Controls. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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31
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Gutierrez S, Hayashida K, Eisenach JC. The puerperium alters spinal cord plasticity following peripheral nerve injury. Neuroscience 2013; 228:301-8. [PMID: 23103215 PMCID: PMC4040951 DOI: 10.1016/j.neuroscience.2012.10.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/17/2012] [Accepted: 10/19/2012] [Indexed: 11/22/2022]
Abstract
Tissue and nerve damage can result in chronic pain. Yet, chronic pain after cesarean delivery is remarkably rare in women and hypersensitivity from peripheral nerve injury in rats resolves rapidly if the injury occurs in the puerperium. Little is known regarding the mechanisms of this protection except for a reliance on central nervous system oxytocin signaling. Here we show that the density of inhibitory noradrenergic fibers in the spinal cord is greater when nerve injury is performed in rats during the puerperium, whereas the expression of the excitatory regulators dynorphin A and neuregulin-1 in the spinal cord is reduced. The puerperium did not alter spinal cord microgial and astrocyte activation. Astrocyte activation, as measured by glial fibrillary acidic protein (GFAP) expression, was not evident in female rats with injury, regardless of delivery status suggesting sex differences in spinal astrocyte activation after injury. These results suggest a change in the descending inhibitory/facilitating balance on spinal nociception neurotransmission during the puerperium, as mechanisms for its protective effect against injury-induced hypersensitivity.
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Affiliation(s)
- S Gutierrez
- Department of Anesthesiology, Wake Forest School of Medicine, Winston Salem, NC 27157-1009, USA.
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32
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Turner CP, Gutierrez S, Liu C, Miller L, Chou J, Finucane B, Carnes A, Kim J, Shing E, Haddad T, Phillips A. Strategies to defeat ketamine-induced neonatal brain injury. Neuroscience 2012; 210:384-92. [PMID: 22406413 DOI: 10.1016/j.neuroscience.2012.02.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 02/03/2012] [Accepted: 02/07/2012] [Indexed: 11/19/2022]
Abstract
Studies using animal models have shown that general anesthetics such as ketamine trigger widespread and robust apoptosis in the infant rodent brain. Recent clinical evidence suggests that the use of general anesthetics on young children (at ages equivalent to those used in rodent studies) can promote learning deficits as they mature. Thus, there is a growing need to develop strategies to prevent this injury. In this study, we describe a number of independent approaches to address therapeutic intervention. Postnatal day 7 (P7) rats were injected with vehicle (sterile PBS) or the NMDAR antagonist ketamine (20 mg/kg). After 8 h, we prepared brains for immunohistochemical detection of the pro-apoptotic enzyme activated caspase-3 (AC3). Focusing on the somatosensory cortex, AC3-positive cells were then counted in a non-biased stereological manner. We found AC3 levels were markedly increased in ketamine-treated animals. In one study, microarray analysis of the somatosensory cortex from ketamine-treated P7 pups revealed that expression of activity dependent neuroprotective protein (ADNP) was enhanced. Thus, we injected P7 animals with the ADNP peptide fragment NAPVSIPQ (NAP) 15 min before ketamine administration and found we could dose-dependently reverse the injury. In separate studies, pretreatment of P6 animals with 20 mg/kg vitamin D(3) or a nontoxic dose of ketamine (5 mg/kg) also prevented ketamine-induced apoptosis at P7. In contrast, pretreatment of P7 animals with aspirin (30 mg/kg) 15 min before ketamine administration actually increased AC3 counts in some regions. These data show that a number of unique approaches can be taken to address anesthesia-induced neurotoxicity in the infant brain, thus providing MDs with a variety of alternative strategies that enhance therapeutic flexibility.
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Affiliation(s)
- C P Turner
- Neurobiology & Anatomy, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1010, USA.
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Murina P, Caussa L, Gutierrez S, Castro Peña P, Sanchez C, Garrigó E, Zunino S. Is Postmastectomy Irradiation Technically Safe for Patients with Immediate Breast Reconstruction? Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1704] [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: 10/16/2022]
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Wong-Ng W, Liu G, Gutierrez S, Luo T, Huang Q, Martin J, Yan Y, Kaduk JA. Structure and thermoelectric properties of Ca- M-Co-O ( M= Sr, Zn, and La). Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311087599] [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: 11/11/2022] Open
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Campagna M, Herranz D, Garcia MA, Marcos-Villar L, González-Santamaría J, Gallego P, Gutierrez S, Collado M, Serrano M, Esteban M, Rivas C. SIRT1 stabilizes PML promoting its sumoylation. Cell Death Differ 2011; 18:72-9. [PMID: 20577263 PMCID: PMC3131875 DOI: 10.1038/cdd.2010.77] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 05/25/2010] [Accepted: 05/26/2010] [Indexed: 12/18/2022] Open
Abstract
SIRT1, the closest mammalian homolog of yeast Sir2, is an NAD(+)-dependent deacetylase with relevant functions in cancer, aging, and metabolism among other processes. SIRT1 has a diffuse nuclear localization but is recruited to the PML nuclear bodies (PML-NBs) after PML upregulation. However, the functions of SIRT1 in the PML-NBs are unknown. In this study we show that primary mouse embryo fibroblasts lacking SIRT1 contain reduced PML protein levels that are increased after reintroduction of SIRT1. In addition, overexpression of SIRT1 in HEK-293 cells increases the amount of PML protein whereas knockdown of SIRT1 reduces the size and number of PML-NBs and the levels of PML protein in HeLa cells. SIRT1 stimulates PML sumoylation in vitro and in vivo in a deacetylase-independent manner. Importantly, the absence of SIRT1 reduces the apoptotic response of vesicular stomatitis virus-infected cells and favors the extent of this PML-sensitive virus replication. These results show a novel function of SIRT1 in the control of PML and PML-NBs.
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Affiliation(s)
- M Campagna
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
| | - D Herranz
- Spanish National Cancer Research Centre (CNIO), 3 Melchor Fernández Almagro, Madrid 28029, Spain
| | - M A Garcia
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
- Instituto de Biopatología y Medicina Regenerativa, Centro de Investigación Biomédica, Parque Tecnológico de Ciencias de la Salud, Avenida del Conocimiento sn, Granada 18100, Spain
| | - L Marcos-Villar
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
- Departamento de Microbiología II, Fac Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal sn, Madrid 28040, Spain
| | - J González-Santamaría
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
| | - P Gallego
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
| | - S Gutierrez
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
| | - M Collado
- Spanish National Cancer Research Centre (CNIO), 3 Melchor Fernández Almagro, Madrid 28029, Spain
| | - M Serrano
- Spanish National Cancer Research Centre (CNIO), 3 Melchor Fernández Almagro, Madrid 28029, Spain
| | - M Esteban
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
| | - C Rivas
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma, Madrid 28049, Spain
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Gutierrez S, Carnes A, Finucane B, Musci G, Oelsner W, Hicks L, Russell GB, Liu C, Turner CP. Is age-dependent, ketamine-induced apoptosis in the rat somatosensory cortex influenced by temperature? Neuroscience 2010; 168:253-62. [PMID: 20298758 DOI: 10.1016/j.neuroscience.2010.03.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Revised: 02/09/2010] [Accepted: 03/08/2010] [Indexed: 01/18/2023]
Abstract
General anesthetics have long been thought to be relatively safe but recent clinical studies have revealed that exposure of very young children (4 years or less) to agents that act by blocking the N-methyl-D-aspartate receptor (NMDAR) can lead to cognitive deficits as they mature. In rodent and non-human primate studies, blockade of this receptor during the perinatal period leads to a number of molecular, cellular and behavioral pathologies. Despite the overwhelming evidence from such studies, doubt remains as to their clinical relevance. A key issue is whether the primary injury (apoptotic cell death) is specific to receptor blockade or due to non-specific, patho-physiological changes. Principal to this argument is that loss of core body temperature following NMDAR blockade could explain why injury is observed hours later. We therefore examined the neurotoxicity of the general anesthetic ketamine in P7, P14 and P21 rats while monitoring core body temperature. We found that, at P7, ketamine induced the pro-apoptotic enzyme activated caspase-3 in a dose-dependent manner. As expected, injury was greatly diminished by P14 and absent by P21. However, contrary to expectations, we found that core body temperature was not a factor in determining injury. Our data imply that injury is directly related to receptor blockade and is unlikely to be overcome by artificially changing core body temperature.
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Affiliation(s)
- S Gutierrez
- Department of Neurobiology & Anatomy, Wake Forest University School of Medicine, 1 Medical Center Boulevard, Winston-Salem, NC 27157-1010, USA
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Correa-Borroel AL, Gutierrez S, Arce E, Cabrera-Sierra R, Herrasti P. Organosilanes and polypyrrole as anticorrosive treatment of aluminium 2024. J APPL ELECTROCHEM 2009. [DOI: 10.1007/s10800-009-9925-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Juliarena M, Poli M, Ceriani C, Sala L, Rodríguez E, Gutierrez S, Dolcini G, Odeon A, Esteban E. Antibody response against three widespread bovine viruses is not impaired in Holstein cattle carrying bovine leukocyte antigen DRB3.2 alleles associated with bovine leukemia virus resistance. J Dairy Sci 2009; 92:375-81. [DOI: 10.3168/jds.2008-1143] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Juliarena MA, Poli M, Sala L, Ceriani C, Gutierrez S, Dolcini G, Rodrguez EM, Mario B, Rodrguez-Dubra C, Esteban EN. Association of BLV infection profiles with alleles of theBoLA-DRB3.2gene. Anim Genet 2008; 39:432-8. [DOI: 10.1111/j.1365-2052.2008.01750.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gutierrez S, Guillemi S, Jahnke N, Montessori V, Harrigan PR, Montaner JSG. Tenofovir-Based Rescue Therapy for Advanced Liver Disease in 6 Patients Coinfected with HIV and Hepatitis B Virus and Receiving Lamivudine. Clin Infect Dis 2008; 46:e28-30. [DOI: 10.1086/525857] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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42
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Juliarena M, Gutierrez S, Ceriani C. Chicken antibodies: a useful tool for antigen capture ELISA to detect bovine leukaemia virus without cross-reaction with other mammalian antibodies. Vet Res Commun 2006; 31:43-51. [PMID: 17187239 DOI: 10.1007/s11259-006-3422-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2005] [Indexed: 11/26/2022]
Abstract
The 24 kDa protein from the gag of the bovine leukaemia virus was cloned and expressed as a fusion protein GST-p24. This recombinant protein was then used to immunize a Leghorn chicken. The partially purified chicken anti-GST IgY was used to develop a solid-phase assay by binding the IgY to an ELISA plate. When the fusion protein contacts the antibody, it binds it by its N-terminal, leaving the C-terminal, which carries the sequence that acts as a capture antigen in solution maximally exposed, reducing the risk of epitope masking. The conditions of the fusion protein on the solid phase maximize the presentation of the antigens' epitopes in solution. For the first time, a system has been developed with a non-mammalian coating antibody. Besides optimizing the recognition of low-molecular-weight antigens synthesized as fusion proteins, it avoids cross-reactions with commonly used secondary antibodies, mostly raised in mammalian hosts.
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Affiliation(s)
- M Juliarena
- Area Virologia, Departamento SAMP, Facultad de Ciencias Veterinarias UNCPBA, Tandil, Argentina
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Benítez A, Ferrari A, Gutierrez S, Canetti R, Cabezas A, Travers D, Menes J, Etchebehere C. Sequencing batch reactor as a post-treatment of anaerobically treated dairy effluent. Water Sci Technol 2006; 54:199-206. [PMID: 16939103 DOI: 10.2166/wst.2006.506] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Wastewater from dairy industries, characterized by its high COD content and relative high COD/TKN ratio, requires post-treatment after anaerobic treatment to complete the removal of organic matter and nutrients. Due to its simplicity, robustness and low maintenance costs, sequencing batch reactors (SBR) result in an attractive system, especially in case of small dairy industries in order to comply with the emission standards. The goal of this work was to determine the operational parameters, optimize the performance, and study the stability of the microbial population of a SBR system for the post-treatment of an anaerobic pond effluent. High and stable removal of COD and TKN was achieved in the reactor, which can easily be set up in dairy industries. An active nitrifying population was selected during reactor operation and maintained relatively stable, while the heterotrophic (total and denitrifying) communities were more unstable and susceptible to changes in the operating conditions.
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Affiliation(s)
- A Benítez
- Facultad de Ingeniería, Instituto de Ingeniería Química, UDELAR, Montevideo, Uruguay.
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Mariño B, Nogues M, Iguzquiza I, Gutierrez S, Rodriguez N, Esteban E, Occhi H. Prevalencia de Tambos Infectados con el Virus de la Leucosis Bovina (BLV) mediante Determinación de Anticuerpos en Leche por el ELISA 108. FAVE Cs Vet 2005. [DOI: 10.14409/favecv.v2i2.1393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Abstract
BACKGROUND Increased oxidative stress, with elevated levels of free radicals, together with diminished antioxidation have been described previously in models of hyperthyroidism and in patients with Graves' disease. However, controversial results have been found about the antioxidant status and its response to treatment. AIM To evaluate the antioxidant/oxidant balance in active Graves' disease and the effects of treatment with methimazole (MMI) and 131 iodine (131I). PATIENTS AND METHODS We studied 69 hyperthyroid (H) patients, 58 female and 11 male, 16-50 years old; total T3: 8 +/- 2 nmol/l, total T4: 264 +/- 65 nmol/l (all mean +/- SD), TSH: 0.1 +/- 0.1 mIU/l, TSH receptor antibody 41 +/- 21%, highest 131Iodine uptake: 67 +/- 16%. As a control group (C), 19 normal adults were studied. DESIGN Parameters evaluated were: tert-butyl hydroperoxide initiated chemiluminiscence (CL), superoxide dismutase (SOD), catalase (CAT), glutathione (GSH), glutathione peroxidase (GPx) and total reactive antioxidant potential (TRAP). RESULTS In patients vs. controls there was an increase in CL levels (6207 +/- 1434 vs. 3000 +/- 851 cpm/mg of haemoglobin, P < 0.001), decrease in SOD (0.4 +/- 0.1 vs. 0.7 +/- 0.2 U/mg prot, P < 0.05; corresponding to 0.15 micro g/ml), CAT (2.8 +/- 0.6 vs. 3.8 +/- 0.7 pmol/mg prot, P < 0.001) and GSH (1.2 +/- 0.4 vs. 2 +/- 0.7 mmol/l erythrocytes, P < 0.05). The decrease in GPx and TRAP did not show significant differences. The parameters were also recorded in 30 patients who became euthyroid after treatment: 20 of them under MMI therapy (2-12 months) and the rest 3-6 months after 131Iodine administration. All the parameters evaluated were normalized after MMI; however, CL levels stayed high after 131I and only CAT and GSH levels returned to normal values. CONCLUSION Our results confirm the imbalance of the antioxidant/oxidant status in hyperthyroid patients. MMI treatment was more effective than 131I therapy to improve that balance. We speculate on the benefits of antioxidant therapy administrated together with the habitual treatment of hyperthyroidism, especially in patients after 131I therapy.
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Affiliation(s)
- M Abalovich
- Endocrinological Division, Durand Hospital and General and Inorganic Chemistry Division, School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina
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Ferrer JF, Galligan D, Esteban E, Rey V, Murua A, Gutierrez S, Gonzalez L, Thakuri M, Feldman L, Poiesz B, Jonsson C. Hantavirus infection in people inhabiting a highly endemic region of the Gran Chaco territory, Paraguay: association with Trypanosoma cruzi infection, epidemiological features and haematological characteristics. Ann Trop Med Parasitol 2003; 97:269-80. [PMID: 12803858 DOI: 10.1179/000349803235001903] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The seroprevalences of anti-hantavirus antibodies were determined in 712 individuals (551 Indians, 140 Mennonites of German ancestry, and 21 Paraguayans of Spanish ancestry) inhabiting a region of western Paraguay in the Gran Chaco territory of South America. The overall seroprevalence of hantavirus infection among the 712 subjects, who were aged 2-80 years, was 42.7% (45.2% in the Indians and 34.2% in the non-Indians). Of the 672 subjects also checked for antibodies against Trypanosoma cruzi, 226 (33.6%) were seropositive for this protozoan parasite. The results of a multivariate regression analysis indicated that, after adjusting for age, sex, setting of residence (rural/urban) and infection with the human T-cell leukaemia/lymphoma virus type II (HTLV-II), a T. cruzi-seropositive individual was 1.73 times more likely to be hantavirus seropositive than a T. cruzi-seronegative individual. Living in a rural setting increased the risk of being hantavirus seropositive 2.17-fold. In both the Indians and non-Indian subpopulations, hantavirus seroprevalence increased with age in both sexes, but only in the non-Indian supopulation was this increase significantly greater in males than in females. Hantavirus seropositivity was significantly associated with thrombocytosis, even after adjusting for the relevant confounders.
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Affiliation(s)
- J F Ferrer
- New Bolton Center, University of Pennsylvania, 382 West Street Road, Kennett Square, PA 19348, USA.
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Abstract
We studied the evolution of 150 pregnancies corresponding to 114 women (16-39 years old) with primary hypothyroidism. Fifty-one pregnancies (34%) were conceived under hypothyroidism: 16 overt (X +/- standard deviation [SD], thyroxine [T4]: 2.44 +/- 0.7 microg/dL; thyrotropin [TSH]: 33.4 +/- 8.82 mIU/L), and 35 subclinical hypothyroidism (T4: 6.93 +/- 1.88 microg/dL; TSH: 12.87 +/- 8.43 mIU/L); 99 pregnancies were conceived under euthyroidism while undergoing thyroid therapy. When treatment with levothyroxine was inadequate, the outcome of pregnancy was abortion in 60% of overtly hypothyroid patients and in 71.4% of subclinically hypothyroid patients, premature delivery in 20% and 7.2% respectively, and term delivery in 20% and 21.4%, respectively. When treatment was adequate, 100% of overtly hypothyroid patients and 90.5% of subclinically hypothyroid patients carried pregnancies to term; there were no abortions in any of the groups. Abortions, premature and term deliveries in patients who were euthyroid on levothyroxine at the time of conception were 4%, 11.1% and 84.9% respectively. Of the patients receiving levothyroxine therapy before conception, 69.5% had to increase the dose (mean increase 46.2 +/- 29.6 microg/d). Of 126 evaluated newborns, 110 were delivered at term while 16 were premature. Eight newborns, 4 were premature, had congenital malformations (6.3%), and 4 died. Our results show that the evolution of pregnancies did not depend on whether the hypothyroidism was overt or subclinical but mainly on the treatment received. The adequate treatment of hypothyroidism during gestation minimizes risks and generally, makes it possible for pregnancies to be carried to term without complications.
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Affiliation(s)
- M Abalovich
- División Endocrinología, Hospital C. Durand, Buenos Aires, Argentina.
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Lian JB, Stein JL, Stein GS, Montecino M, van Wijnen AJ, Javed A, Gutierrez S. Contributions of nuclear architecture and chromatin to vitamin D-dependent transcriptional control of the rat osteocalcin gene. Steroids 2001; 66:159-70. [PMID: 11179723 DOI: 10.1016/s0039-128x(00)00160-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The vitamin D response element in the bone tissue-specific osteocalcin gene has served as a prototype for understanding molecular mechanisms regulating physiologic responsiveness of vitamin D-dependent genes in bone cells. We briefly review factors which contribute to vitamin D transcriptional control. The organization of the vitamin D response element (VDRE), the multiple activities of the vitamin D receptor transactivation complex, and the necessity for protein-protein interactions between the VDR-RXR heterodimer activation complex and DNA binding proteins at other regulatory elements, including AP-1 sites and TATA boxes, provide for precise regulation of gene activity in concert with basal levels of transcription. We present evidence for molecular mechanisms regulating vitamin D-dependent mediated transcription of the osteocalcin gene that involve chromatin structure of the gene and nuclear architecture. Modifications in nucleosomal organization, DNase I hypersensitivity and localization of vitamin D receptor interacting proteins in subnuclear domains are regulatory components of vitamin D-dependent gene transcription. A model is proposed to account for the inability of vitamin D induction of the osteocalcin gene in the absence of ongoing basal transcription by competition of the YY1 nuclear matrix-associated transcription factor for TFIIB-VDR interactions. Activation of the VDR-RXR complex at the OC VDRE occurs through modifications in chromatin mediated in part by interaction of OC gene regulatory sequences with the nuclear matrix-associated Cbfa1 (Runx2) transcription factor which is required for osteogenesis.
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Affiliation(s)
- J B Lian
- Department of Cell Biology, University of Massachusetts Medical School, Worcester 01655-1016, USA.
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Dube S, Dolcini G, Abbott L, Mehta S, Dube D, Gutierrez S, Ceriani C, Esteban E, Ferrer J, Poiesz B. The complete genomic sequence of a BLV strain from a Holstein cow from Argentina. Virology 2000; 277:379-86. [PMID: 11080485 DOI: 10.1006/viro.2000.0622] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [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: 11/22/2022]
Abstract
DNA was extracted from the peripheral blood of a seropositive, PCR-positive, BLV-infected Holstein cow (No. 38) from Argentina. The DNA was amplified via PCR with a series of overlapping primers encompassing the entire BLV proviral DNA. The amplified BLV ARG 38 DNA was cloned, sequenced, and compared phylogenetically to three other full-length BLV sequences. Characterization of its deduced proteins and its relationship to other members of the PTLV/BLV genus of retroviruses are discussed.
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Affiliation(s)
- S Dube
- Department of Medicine, Upstate Medical University, Syracuse, New York 13210, USA
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Javed A, Gutierrez S, Montecino M, van Wijnen AJ, Stein JL, Stein GS, Lian JB. Multiple Cbfa/AML sites in the rat osteocalcin promoter are required for basal and vitamin D-responsive transcription and contribute to chromatin organization. Mol Cell Biol 1999; 19:7491-500. [PMID: 10523637 PMCID: PMC84749 DOI: 10.1128/mcb.19.11.7491] [Citation(s) in RCA: 117] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Three Cbfa motifs are strategically positioned in the bone-specific rat osteocalcin (rOC) promoter. Sites A and B flank the vitamin D response element in the distal promoter and sites B and C flank a positioned nucleosome in the proximal promoter. The functional significance of each Cbfa element was addressed by mutating individual or multiple Cbfa sites within the context of the -1.1-kb rOC promoter fused to a chloramphenicol acetyltransferase reporter gene. Promoter activity was assayed following transient transfection and after stable genomic integration in ROS 17/2.8 osteoblastic cell lines. We show that all three Cbfa sites are required for maximal basal expression of the rOC promoter. However, the distal sites A and B each contribute significantly more (P < 0.001) to promoter activity than site C. In a genomic context, sites A and B can largely compensate for a mutation at the proximal site C, and paired mutations involving site A (mAB or mAC) result in a far greater loss of activity than the mBC mutation. Strikingly, mutation of the three Cbfa sites leads to abrogation of responsiveness to vitamin D. Vitamin D-enhanced activity is also not observed when sites A and B are mutated. Significantly, related to these losses in transcriptional activity, mutation of the three Cbfa sites results in altered chromatin structure as reflected by loss of DNase I-hypersensitive sites at the vitamin D response element and over the proximal tissue-specific basal promoter. These findings strongly support a multifunctional role for Cbfa factors in regulating gene expression, not only as simple transcriptional transactivators but also by facilitating modifications in promoter architecture and chromatin organization.
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Affiliation(s)
- A Javed
- Department of Cell Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01655-0106, USA
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