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AbstractIn the world's highest mountain ranges, uncertainty about the upper elevational range limits of alpine animals represents a critical knowledge gap regarding the environmental limits of life and presents a problem for detecting range shifts in response to climate change. Here we report results of mountaineering mammal surveys in the Central Andes, which led to the discovery of multiple species of mice living at extreme elevations that far surpass previously assumed range limits for mammals. We livetrapped small mammals from ecologically diverse sites spanning >6,700 m of vertical relief, from the desert coast of northern Chile to the summits of the highest volcanoes in the Andes. We used molecular sequence data and whole-genome sequence data to confirm the identities of species that represent new elevational records and to test hypotheses regarding species limits. These discoveries contribute to a new appreciation of the environmental limits of vertebrate life.
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Altitude , Animais , Camundongos/genética , Camundongos/fisiologia , Chile , Filogenia , Distribuição AnimalRESUMO
Ichthyomyini, a morphologically distinctive group of Neotropical cricetid rodents, lacks an integrative study of its systematics and biogeography. Since this tribe is a crucial element of the Sigmodontinae, the most speciose subfamily of the Cricetidae, we conducted a study that includes most of its recognized diversity (five genera and 19 species distributed from southern Mexico to northern Bolivia). For this report we analyzed a combined matrix composed of four molecular markers (RBP3, GHR, RAG1, Cytb) and 56 morphological traits, the latter including 15 external, 14 cranial, 19 dental, five soft-anatomical and three postcranial features. A variety of results were obtained, some of which are inconsistent with the currently accepted classification and understanding of the tribe. Ichthyomyini is retrieved as monophyletic, and it is divided into two main clades that are here recognized as subtribes: one to contain the genus Anotomys and the other composed by the remaining genera. Neusticomys (as currently recognized) was found to consist of two well supported clades, one of which corresponds to the original concept of Daptomys. Accordingly, we propose the resurrection of the latter as a valid genus to include several species from low to middle elevations and restrict Neusticomys to several highland forms. Numerous other revisions are necessary to reconcile the alpha taxonomy of ichthyomyines with our phylogenetic results, including placement of the Cajas Plateau water rat (formerly Chibchanomys orcesi) in the genus Neusticomys (sensu stricto), and the recognition of at least two new species (one in Neusticomys, one in Daptomys). Additional work is necessary to confirm other unanticipated results, such as the non-monophyletic nature of Rheomys and the presence of a possible new genus and species from Peru. Our results also suggest that ichthyomyines are one of the main Andean radiations of sigmodontine cricetids, with an evolutionary history dating to the Late Miocene and subsequent cladogenesis during the Pleistocene.
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Arvicolinae , Sigmodontinae , Animais , Filogenia , Evolução Biológica , PeruRESUMO
Abstract Background Pancreaticoduodenectomy is associated with high morbidity. Many preoperative variables are risk factors for postoperative complications, but they are primarily non-modifiable. It is not clear whether an intraoperative goal-directed fluid regimen might be associated with fewer postoperative surgical complications compared to current conservative, non-goal-directed fluid practices. We hypothesize that the use of Systolic Volume Variation (SVV)-guided intraoperative fluid administration might be beneficial. Methods Data from 223 patients who underwent pancreaticoduodenectomy in our institution between 2015 and 2019 were reviewed. Patients were classified into two groups based on the use of intraoperative use of SVV to guide the administration of fluids. The decision to use SVV or not was made by the attending anesthesiologist. Subjects were classified into SVV-guided intraoperative fluid therapy (SVV group) and non-SVV-guided intraoperative fluid therapy (non-SVV group). Uni and multivariate regression analyses were conducted to determine if SVV-guided fluid therapy was significantly associated with a lower incidence of postoperative surgical complications, such as Postoperative Pancreatic Fistula (POPF), Delayed Gastric Emptying (DGE), among others, after adjusting for confounders. Results Baseline, demographic, and intraoperative characteristics were similar between SVV and non-SVV groups. In the multivariate analysis, the use of SVV guidance was significantly associated with fewer postoperative surgical complications (OR = 0.48; 95% CI 0.25-0.91; p= 0.025), even after adjusting for significant covariates, such as perioperative use of epidural, pancreatic gland parenchyma texture, and diameter of the pancreatic duct. Conclusions VV-guided intraoperative fluid administration might be associated with fewer postoperative surgical complications after pancreaticoduodenectomy.
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Humanos , Pancreaticoduodenectomia , Hidratação , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos , Fatores de Risco , Resultado do TratamentoRESUMO
BACKGROUND: There is great interest in the search for new alternatives to antimicrobial drugs, and the use of synbiotics is a promising approach to this problem. This study evaluated the growth inhibition and antibiofilm activity of the short-chain fatty acids produced by Lacticaseibacillus rhamnosus and Pediococcus acidilactici in combination with inulin-type fructans against Candida albicans. METHODS: The growth inhibition of Candida was evaluated using microdilution analysis in 96-well microtiter plates; different concentrations of cell-free supernatants of Lacticaseibacillus rhamnosus and Pediococcus acidilactici were exposed to Candida albicans. The antibiofilm assessment was carried out using the crystal violet staining assay. The short-chain fatty acids were analyzed by gas chromatography. RESULTS: The clinically isolated Candida albicans interacted with supernatants from Lacticaseibacillus rhamnosus and Pediococcus acidilactici and showed significant growth inhibition and antibiofilm formation versus the controls. Lactate and acetic acid were elevated in the supernatants. The results suggest that the supernatants obtained from the synbiotic combinations of Lacticaseibacillus rhamnosus and Pediococcus acidilactici with inulin-type fructans can inhibit the growth and biofilm formation against a clinically isolated Candida albicans strain. CONCLUSIONS: These results suggest that synbiotic formulations could be a promising alternative to antifungal drugs in candidiasis therapy.
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BACKGROUND: Pancreaticoduodenectomy is associated with high morbidity. Many preoperative variables are risk factors for postoperative complications, but they are primarily non-modifiable. It is not clear whether an intraoperative goal-directed fluid regimen might be associated with fewer postoperative surgical complications compared to current conservative, non-goal-directed fluid practices. We hypothesize that the use of Systolic Volume Variation (SVV)-guided intraoperative fluid administration might be beneficial. METHODS: Data from 223 patients who underwent pancreaticoduodenectomy in our institution between 2015 and 2019 were reviewed. Patients were classified into two groups based on the use of intraoperative use of SVV to guide the administration of fluids. The decision to use SVV or not was made by the attending anesthesiologist. Subjects were classified into SVV-guided intraoperative fluid therapy (SVV group) and non-SVV-guided intraoperative fluid therapy (non-SVV group). Uni and multivariate regression analyses were conducted to determine if SVV-guided fluid therapy was significantly associated with a lower incidence of postoperative surgical complications, such as Postoperative Pancreatic Fistula (POPF), Delayed Gastric Emptying (DGE), among others, after adjusting for confounders. RESULTS: Baseline, demographic, and intraoperative characteristics were similar between SVV and non-SVV groups. In the multivariate analysis, the use of SVV guidance was significantly associated with fewer postoperative surgical complications (OR = 0.48; 95% CI 0.25-0.91; p = 0.025), even after adjusting for significant covariates, such as perioperative use of epidural, pancreatic gland parenchyma texture, and diameter of the pancreatic duct. CONCLUSIONS: VV-guided intraoperative fluid administration might be associated with fewer postoperative surgical complications after pancreaticoduodenectomy.
Assuntos
Hidratação , Pancreaticoduodenectomia , Humanos , Estudos Retrospectivos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/prevenção & controle , Complicações Pós-Operatórias/etiologia , Fatores de Risco , Resultado do TratamentoRESUMO
RESUMEN Objetivo: Analizar las características metodológicas y de investigación, los antecedentes del sujeto de estudio y de las evaluaciones e intervenciones de las tesis de pregrado de la carrera de kinesiología en una universidad chilena durante los años 2010 - 2018. Materiales y métodos: Se analizaron 91 tesis; para su análisis se utilizó un instrumento validado que se organizó en tres grandes categorías: a) características metodológicas y de investigación, b) antecedentes del sujeto de estudio y c) antecedentes de las evaluaciones e intervenciones, y se registró un total de 38 ítems. Resultados: Se reportó que las tesis mayoritariamente las realizan dos estudiantes tesis-tas, en conjunto con un guía con grado licenciado, presentan un alcance descriptivo, diseño no experimental, temporalidad transversal, con muestras pequeñas, no probabilísticas, por conveniencia, utilizando cuestionarios y/o encuestas para medir parámetros de actividad y condición físicas principalmente en las áreas respiratoria y traumatológica. Las tesis cumplen con la estructura de un reporte científico, aun cuando un gran porcentaje de ellas tiene referencias poco actualizadas y no incluyen datos de aprobación del comité de ética. Los sujetos de estudio principalmente eran jóvenes y adultos pertenecientes a centros educativos de enseñanza básica, media, universitaria o a una red de atención de salud pública que presentaban algún diagnóstico médico de enfermedad cardiometabólica. Conclusión: Este estudio reveló información valiosa respecto a cómo se ha llevado a cabo la formación investigativa de esta carrera de la salud, identificó áreas de conocimiento, poblaciones y condiciones de salud poco exploradas y los tratamientos usados frecuentemente.
ABSTRACT Objective: To analyze the methodological and research characteristics, records of the participants, and the evaluations and interventions of undergraduate theses of students in the Physiotherapy program in a Chilean university between 2010-2018. Materials and methodology: 91 theses were analyzed, using a validated instrument organized in three categories: methodological and research characteristics, records of the participants, and records of the evaluations and interventions. The said instrument consisted of a total of 38 items. Results: We reported that most theses were written by two candidates each and a thesis advisor with a bachelor's degree. The theses have a descriptive scope, a non-experimental design, and a cross-sectional design with small non-probabilistic purposeful samples. Moreover, the instruments used in the theses are mainly questionnaires and surveys to measure physical condition and activity parameters, mainly in respiratory and orthopedic areas. The theses follow the structure of a scientific report, even when a big percentage of them present outdated references and do not include data regarding approval from the ethics committee. The participants in the studies were mainly young people and adults who belonged to different elementary schools, secondary schools, and universities or people who presented cardiometabolic disease and belonged to a public health establishment. Conclusion: The study revealed important information regarding how research training in the program has been carried out, identifying areas for growth, and barely explored populations and health conditions, as well as frequently used treatments
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OBJECTIVE: To analyze the distribution of adult intensive care units according to geographic region and health sector in Rio de Janeiro and to investigate severe acute respiratory infection mortality in the public sector and its association with critical care capacity in the public sector. METHODS: We evaluated the variation in intensive care availability and severe acute respiratory infection mortality in the public sector across different areas of the city in 2014. We utilized databases from the National Registry of Health Establishments, the Brazilian Institute of Geography and Statistics, the National Mortality Information System and the Hospital Admission Information System. RESULTS: There is a wide range of intensive care unit beds per capita (from 4.0 intensive care unit beds per 100,000 people in public hospitals in the West Zone to 133.6 intensive care unit beds per 100,000 people in private hospitals in the Center Zone) in the city of Rio de Janeiro. The private sector accounts for almost 75% of the intensive care unit bed supply. The more developed areas of the city concentrate most of the intensive care unit services. Map-based spatial analysis shows a lack of intensive care unit beds in vast territorial extensions in the less developed regions of the city. There is an inverse correlation (r = -0.829; 95%CI -0.946 to -0.675) between public intensive care unit beds per capita in different health planning areas of the city and severe acute respiratory infection mortality in public hospitals. CONCLUSION: Our results show a disproportionate intensive care unit bed provision across the city of Rio de Janeiro and the need for a rational distribution of intensive care.
Assuntos
Cuidados Críticos/estatística & dados numéricos , Disparidades em Assistência à Saúde/estatística & dados numéricos , Unidades de Terapia Intensiva/estatística & dados numéricos , Infecções Respiratórias , Adulto , Brasil , Atenção à Saúde/organização & administração , Humanos , Infecções Respiratórias/terapia , Índice de Gravidade de Doença , Análise Espacial , Saúde da População UrbanaRESUMO
RESUMO Objetivo: Analisar a distribuição das unidades de terapia intensiva para adultos, segundo a região geográfica e o setor sanitário no Rio de Janeiro, e investigar a mortalidade por infecção respiratória aguda grave no setor público e sua associação com a capacidade de terapia intensiva no setor público. Métodos: Avaliamos a variação da disponibilidade de terapia intensiva e a mortalidade por infecção respiratória aguda grave no setor público em diferentes áreas da cidade em 2014. Utilizamos as bases de dados do Cadastro Nacional de Estabelecimentos de Saúde, do Instituto Brasileiro de Geografia e Estatística, do Sistema de Informações sobre Mortalidade e do Sistema de Informações Hospitalares do SUS. Resultados: Foi ampla a variação na disponibilidade de leitos em unidades de terapia intensiva per capita (desde 4,0 leitos de terapia intensiva por 100 mil habitantes em hospitais públicos na zona oeste até 133,6 leitos em unidades de terapia intensiva por 100 mil habitantes nos hospitais privados na zona central) na cidade do Rio de Janeiro. O setor privado respondeu pelo suprimento de quase 75% dos leitos em unidades de terapia intensiva. Uma análise espacial com base em mapas mostrou falta de leitos em unidades de terapia intensiva em vastas extensões territoriais nas regiões menos desenvolvidas da cidade. Houve correlação inversa (r = -0,829; IC95% -0,946 - -0,675) entre a quantidade de leitos públicos em unidade de terapia intensiva per capita em diferentes áreas de planejamento em saúde na cidade e a mortalidade por infecção respiratória aguda grave em hospitais públicos. Conclusão: Nossos resultados mostram disponibilidade desproporcional de leitos em unidades de terapia intensiva na cidade do Rio de Janeiro e a necessidade de uma distribuição racional da terapia intensiva.
ABSTRACT Objective: To analyze the distribution of adult intensive care units according to geographic region and health sector in Rio de Janeiro and to investigate severe acute respiratory infection mortality in the public sector and its association with critical care capacity in the public sector. Methods: We evaluated the variation in intensive care availability and severe acute respiratory infection mortality in the public sector across different areas of the city in 2014. We utilized databases from the National Registry of Health Establishments, the Brazilian Institute of Geography and Statistics, the National Mortality Information System and the Hospital Admission Information System. Results: There is a wide range of intensive care unit beds per capita (from 4.0 intensive care unit beds per 100,000 people in public hospitals in the West Zone to 133.6 intensive care unit beds per 100,000 people in private hospitals in the Center Zone) in the city of Rio de Janeiro. The private sector accounts for almost 75% of the intensive care unit bed supply. The more developed areas of the city concentrate most of the intensive care unit services. Map-based spatial analysis shows a lack of intensive care unit beds in vast territorial extensions in the less developed regions of the city. There is an inverse correlation (r = -0.829; 95%CI -0.946 to -0.675) between public intensive care unit beds per capita in different health planning areas of the city and severe acute respiratory infection mortality in public hospitals. Conclusion: Our results show a disproportionate intensive care unit bed provision across the city of Rio de Janeiro and the need for a rational distribution of intensive care.
Assuntos
Humanos , Adulto , Infecções Respiratórias/terapia , Cuidados Críticos/estatística & dados numéricos , Disparidades em Assistência à Saúde/estatística & dados numéricos , Unidades de Terapia Intensiva/estatística & dados numéricos , Índice de Gravidade de Doença , Brasil , Saúde da População Urbana , Atenção à Saúde/organização & administração , Análise EspacialRESUMO
The nominal species Calomys tener (Winge, 1887) ranges broadly in open lands of the Caatinga, Cerrado, Pantanal and Mata Atlântica of Brazil, and was recently reported from the Pampas of southern Brazil, and in the Selva Paranaense of eastern Paraguay and northeastern Argentina. This rodent can be infected with the pathogenic Araraquara hantavirus in Brazil. Given that most epidemiological studies have not taken into account updated taxonomic findings of their rodent hosts, in this study, we obtained sequence data of the Cyt-b and COI genes of specimens of C. tener from 22 different geographical localities from throughout the currently known distribution of the species (including individuals from Argentina, Paraguay, Bolivia, and Brazil) to test if it constitutes a single genetic unit or if it presents genetic discontinuities that may represent different evolutionary lineages. Phylogenetic analyses including several species of Calomys recovered several clades with strong support. Regarding C. tener, it is recovered as sister to the node that cluster C. laucha (Fischer, 1814) sensu lato, C. expulsus (Lund, 1841) and species in the C. callosus (Rengger, 1830) species complex. At the intraspecific level there are no genetic gaps among haplotypes of C. tener that could suggest more than one species. The recent captures in the Pampas of southern Brazil and in the Selva Paranaense suggest that the species may be colonizing new geographic areas.(AU)
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Animais , Sigmodontinae/classificação , Sigmodontinae/genética , Filogenia , Citocromos b/isolamento & purificação , Complexo IV da Cadeia de Transporte de Elétrons/isolamento & purificação , América do SulRESUMO
The nominal species Calomys tener (Winge, 1887) ranges broadly in open lands of the Caatinga, Cerrado, Pantanal and Mata Atlântica of Brazil, and was recently reported from the Pampas of southern Brazil, and in the Selva Paranaense of eastern Paraguay and northeastern Argentina. This rodent can be infected with the pathogenic Araraquara hantavirus in Brazil. Given that most epidemiological studies have not taken into account updated taxonomic findings of their rodent hosts, in this study, we obtained sequence data of the Cyt-b and COI genes of specimens of C. tener from 22 different geographical localities from throughout the currently known distribution of the species (including individuals from Argentina, Paraguay, Bolivia, and Brazil) to test if it constitutes a single genetic unit or if it presents genetic discontinuities that may represent different evolutionary lineages. Phylogenetic analyses including several species of Calomys recovered several clades with strong support. Regarding C. tener, it is recovered as sister to the node that cluster C. laucha (Fischer, 1814) sensu lato, C. expulsus (Lund, 1841) and species in the C. callosus (Rengger, 1830) species complex. At the intraspecific level there are no genetic gaps among haplotypes of C. tener that could suggest more than one species. The recent captures in the Pampas of southern Brazil and in the Selva Paranaense suggest that the species may be colonizing new geographic areas.
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Animais , Citocromos b/isolamento & purificação , Complexo IV da Cadeia de Transporte de Elétrons/isolamento & purificação , Filogenia , Sigmodontinae/classificação , Sigmodontinae/genética , América do SulRESUMO
Bats (Order: Chiroptera) harbor a high diversity of emerging pathogens presumably because their ability to fly and social behavior favor the maintenance, evolution, and dissemination of these pathogens. Until 2012, there was only one report of the presence of Hantavirus in bats. Historically, it was thought that these viruses were harbored primarily by rodent and insectivore small mammals. Recently, new species of hantaviruses have been identified in bats from Africa and Asia continents expanding the potential reservoirs and range of these viruses. To assess the potential of Neotropical bats as hosts for hantaviruses and its transmission dynamics in nature, we tested 53 bats for active hantaviral infection from specimens collected in Southeastern Brazil. Part of the hantaviral S segment was amplified from the frugivorous Carollia perspicillata and the common vampire bat Desmodus rotundus. DNA sequencing showed high similarity with the genome of Araraquara orthohantavirus (ARQV), which belongs to one of the more lethal hantavirus clades (Andes orthohantavirus). ARQV-like infection was detected in the blood, urine, and organs of D. rotundus. Therefore, we describe a systemic infection in Neotropical bats by a human pathogenic Hantavirus. We also propose here a schematic transmission dynamics of hantavirus in the study region. Our results give insights to new, under-appreciated questions that need to be addressed in future studies to clarify hantavirus transmission in nature and avoid hantavirus outbreaks.
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Quirópteros/virologia , Reservatórios de Doenças/virologia , Infecções por Hantavirus/virologia , Orthohantavírus/fisiologia , Animais , Brasil , Quirópteros/sangue , Quirópteros/classificação , Variação Genética , Geografia , Orthohantavírus/classificação , Orthohantavírus/genética , Infecções por Hantavirus/sangue , Infecções por Hantavirus/transmissão , Interações Hospedeiro-Patógeno , Humanos , Filogenia , Análise de Sequência de DNARESUMO
We screened blood samples from 560 wild rodents collected in southeastern Brazil for antibodies to a recombinant nucleoprotein (rN) of Junín virus. Six rodents were antibody positive (1.1%), demonstrating evidence of infection with mammarenaviruses in several species of Brazilian rodents.
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Infecções por Arenaviridae/veterinária , Arenaviridae/classificação , Roedores/virologia , Animais , Animais Selvagens , Infecções por Arenaviridae/epidemiologia , Infecções por Arenaviridae/virologia , Brasil/epidemiologia , Estudos SoroepidemiológicosRESUMO
Hantaviruses are zoonotic viruses harbored by rodents, bats, and shrews. At present, only rodent-borne hantaviruses are associated with severe illness in humans. New species of hantaviruses have been recently identified in bats and shrews greatly expanding the potential reservoirs and ranges of these viruses. Brazil has one of the highest incidences of hantavirus cardiopulmonary syndrome in South America, hence it is critical to know what is the prevalence of hantaviruses in Brazil. Although much is known about rodent reservoirs, little is known regarding bats. We captured 270 bats from February 2012 to April 2014. Serum was screened for the presence of antibodies against a recombinant nucleoprotein (rN) of Araraquara virus (ARAQV). The prevalence of antibody to hantavirus was 9/53 with an overall seroprevalence of 17%. Previous studies have shown only insectivorous bats to harbor hantavirus; however, in our study, of the nine seropositive bats, five were frugivorous, one was carnivorous, and three were sanguivorous phyllostomid bats.
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Quirópteros/virologia , Infecções por Hantavirus/epidemiologia , Infecções por Hantavirus/veterinária , Orthohantavírus/isolamento & purificação , Animais , Anticorpos Antivirais/sangue , Brasil/epidemiologia , Nucleoproteínas/imunologia , Estudos Soroepidemiológicos , Musaranhos/virologiaRESUMO
The Neotropics harbors a high diversity of species and several hypotheses have been proposed to account for this pattern. However, while species of forested domains are frequently studied, less is known of species from open vegetation formations occupying, altogether, a larger area than the Amazon Forest. Here we evaluate the role of historical barriers and the riverine hypothesis in the speciation patterns of small mammals by analyzing an ancient rodent lineage (Thrichomys, Hystricomorpha). Phylogenetic and biogeographic analyses were carried out with mitochondrial and nuclear DNA markers to analyze the evolutionary relationships between Thrichomys lineages occurring in dry domains along both banks of the Rio São Francisco. This river is one of the longest of South America whose course and water flow have been modified by inland tectonic activities and climate changes. Molecular data showed a higher number of lineages than previously described. The T. inermis species complex with 2nâ=â26, FNâ=â48 was observed in both banks of the river showing a paraphyletic arrangement, suggesting that river crossing had occurred, from east to west. A similar pattern was also observed for the T. apereoides complex. Thrichomys speciation occurred in Late Miocene when the river followed a different course. The current geographic distribution of Thrichomys species and their phylogenetic relationships suggested the existence of frequent past connections between both banks in the middle section of the Rio São Francisco. The extensive palaeodune region found in this area has been identified as a centre of endemism of several vertebrate species and is likely to be a center of Thrichomys diversification.
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Biodiversidade , Especiação Genética , Fenômenos Geológicos , Filogeografia , Desenvolvimento Vegetal , Roedores/genética , Animais , Núcleo Celular/genética , Citocromos b/genética , DNA Mitocondrial/genética , Evolução Molecular , Fibrinogênio/genética , Íntrons/genética , Rios , Roedores/classificaçãoRESUMO
We tested sera from 286 agricultural workers and 322 rodents in the department of Córdoba, northeastern Colombia, for antibodies against two hantaviruses. The sera were analysed by indirect ELISA using the lysate of Vero E6 cells infected with Maciel virus (MACV) or the N protein of Araraquara virus (ARAV) as antigens for the detection of antibodies against hantaviruses. Twenty-four human sera were IgG positive using one or both antigens. We detected anti-MACV IgG antibodies in 10 sera (3.5%) and anti-ARAV antibodies in 21 sera (7.34%). Of the 10 samples that were positive for MACV, seven (70%) were cross-reactive with ARAV; seven of the 21 ARAV-positive samples were cross-reactive with MACV. Using an ARAV IgM ELISA, two of the 24 human sera (8.4%) were positive. We captured 322 rodents, including 210 Cricetidae (181 Zygodontomys brevicauda, 28 Oligoryzomys fulvescens and 1 Oecomys trinitatis), six Heteromys anomalus (Heteromyidae), one Proechimys sp. (Echimyidae) and 105 Muridae (34 Rattus rattus and 71 Mus musculus). All rodent sera were negative for both antigens. The 8.4% detection rate of hantavirus antibodies in humans is much higher than previously found in serosurveys in North America, suggesting that rural agricultural workers in northeastern Colombia are frequently exposed to hantaviruses. Our results also indicate that tests conducted with South American hantavirus antigens could have predictive value and could represent a useful alternative for the diagnosis of hantavirus infection in Colombia.
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Doenças dos Trabalhadores Agrícolas/epidemiologia , Anticorpos Antivirais/sangue , Antígenos Virais/imunologia , Infecções por Hantavirus/epidemiologia , Orthohantavírus/imunologia , Roedores/virologia , Adulto , Idoso , Doenças dos Trabalhadores Agrícolas/diagnóstico , Doenças dos Trabalhadores Agrícolas/virologia , Animais , Região do Caribe/epidemiologia , Colômbia/epidemiologia , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Feminino , Orthohantavírus/isolamento & purificação , Infecções por Hantavirus/diagnóstico , Infecções por Hantavirus/veterinária , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Prospectivos , Roedores/classificaçãoRESUMO
We tested sera from 286 agricultural workers and 322 rodents in the department of Córdoba, northeastern Colombia, for antibodies against two hantaviruses. The sera were analysed by indirect ELISA using the lysate of Vero E6 cells infected with Maciel virus (MACV) or the N protein of Araraquara virus (ARAV) as antigens for the detection of antibodies against hantaviruses. Twenty-four human sera were IgG positive using one or both antigens. We detected anti-MACV IgG antibodies in 10 sera (3.5%) and anti-ARAV antibodies in 21 sera (7.34%). Of the 10 samples that were positive for MACV, seven (70%) were cross-reactive with ARAV; seven of the 21 ARAV-positive samples were cross-reactive with MACV. Using an ARAV IgM ELISA, two of the 24 human sera (8.4%) were positive. We captured 322 rodents, including 210 Cricetidae (181 Zygodontomys brevicauda, 28 Oligoryzomys fulvescens and 1 Oecomys trinitatis), six Heteromys anomalus (Heteromyidae), one Proechimys sp. (Echimyidae) and 105 Muridae (34 Rattus rattus and 71 Mus musculus). All rodent sera were negative for both antigens. The 8.4% detection rate of hantavirus antibodies in humans is much higher than previously found in serosurveys in North America, suggesting that rural agricultural workers in northeastern Colombia are frequently exposed to hantaviruses. Our results also indicate that tests conducted with South American hantavirus antigens could have predictive value and could represent a useful alternative for the diagnosis of hantavirus infection in Colombia.
Assuntos
Adulto , Idoso , Animais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doenças dos Trabalhadores Agrícolas/epidemiologia , Anticorpos Antivirais/sangue , Antígenos Virais/imunologia , Infecções por Hantavirus/epidemiologia , Orthohantavírus/imunologia , Roedores/virologia , Doenças dos Trabalhadores Agrícolas/diagnóstico , Doenças dos Trabalhadores Agrícolas/virologia , Região do Caribe/epidemiologia , Colômbia/epidemiologia , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Infecções por Hantavirus/diagnóstico , Infecções por Hantavirus/veterinária , Orthohantavírus/isolamento & purificação , Prevalência , Estudos Prospectivos , Roedores/classificaçãoRESUMO
OBJECTIVES: To validate SODA (severity of dyspepsia assessment) questionnaire in our population for evaluating symptoms severity in patients with dyspepsia. MATERIALS AND METHODS: Content and appearance validity were measured, and then a modified questionnaire was developed. A pilot test was made and reliability, construct validity and responsiveness were measured. RESULTS: An adequate content and appearance validity were obtained. On the pilot test, reliability of the complete questionnaire and by components had Cronbach alpha values over 0,7. Construct validity of SODA was evaluated by correlating modified SODA results with SF-36 scores using Pearson test: -0.72 (p<0.001). When we compared results of modified SODA questionnaire and the score of a question about subjective perception of the disease using Spearman test we obtained similar results: 0.72 (p<0.001). Two means of SODA questionnaire scores, before and after treatment, were compared using Student's T test, and a significant difference was found, (p<0.001) with a drop mean of 5.70 ±5.33. CONCLUSION: Modified SODA questionnaire meets all criteria of validity and it could be used to measure dyspepsia severity and its evolution in a Peruvian population.
Assuntos
Dispepsia/diagnóstico , Inquéritos e Questionários , Avaliação de Sintomas , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Peru , Índice de Gravidade de Doença , Adulto JovemRESUMO
BACKGROUND: Conflicting evidence exists regarding age as a predictive factor in excess weight loss after bariatric surgery. The objective of this cross-sectional study is to evaluate differences in excess BMI loss (%EBMIL) 1 year after surgery in patients older and younger than 45 years. METHODS: Adult obese patients fulfilling selection criteria underwent either Roux-en-Y gastric bypass or sleeve gastrectomy and were grouped according to age < and ≥45 years with follow-up at least 1 year. Both groups were compared in terms of excess BMI loss (%EBMIL) and other clinical outcomes. Possible relationship between %EBMIL, age, surgical technique, and presence of comorbidities such as diabetes mellitus, hypertension (HT), and dyslipidemia (DL) was searched. RESULTS: Three hundred thirty-seven patients (72.5 % female), 196 (50.1 %) younger than 45 years and 141 (49.9 %) with age ≥45 years. There was significant difference between age group and %EBMIL 12 months after surgery (p < 0.001), showing better results in younger patients. No differences were found in terms of gender, preoperative body mass index (BMI), surgical technique, nor presence of DL. Using multiple regression, we found significant interaction effect between age group (p < 0.001), presence of HT (p = 0.001), and %EBMIL at follow-up. CONCLUSIONS: Patients younger than 45 years lose greater amount of excess BMI than older patients after bariatric surgery. This tendency might be useful as a preoperative weight loss predictor in bariatric patients.
Assuntos
Derivação Gástrica , Gastroplastia , Obesidade Mórbida/cirurgia , Redução de Peso , Adolescente , Adulto , Fatores Etários , Idoso , Índice de Massa Corporal , Chile/epidemiologia , Comorbidade , Estudos Transversais , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade Mórbida/epidemiologia , Seleção de Pacientes , Resultado do TratamentoRESUMO
Objetivos: Validación del cuestionario SODA (severity of dyspepsia assessment) para evaluar la severidad de los síntomas en pacientes con dispepsia. Materiales y métodos: Se evaluó la validez de contenido y de apariencia, tras lo cual se elaboró un cuestionario modificado. Posteriormente se evaluó la consistencia interna, la validez de constructo y la sensibilidad al cambio. Resultados: Se obtuvo una validez de contenido y de apariencia adecuadas. Se obtuvo un α-Cronbach del cuestionario y por componentes superiores a 0,7. Al analizar la validez de constructo, la correlaciσn entre los valores del cuestionario SODA modificado y SF-36 fue de -0,72 (p<0,001) a través de la prueba de Pearson. Al evaluar la correlación entre el puntaje del cuestionario SODA modificado y el de percepción subjetiva de los síntomas se obtuvo un valor de 0,72 (p<0,001) mediante la prueba de Spearman. Se comparó las medias de los puntajes del cuestionario SODA modificado pre y post-tratamiento mediante la prueba de T-Student en el que se encontró una diferencia significativa (p<0,001) con un promedio de caída de 5,70±5,33. Conclusiones: El cuestionario SODA modificado cumple con los criterios de validez por lo que sirve para valorar la severidad de la dispepsia y su evolución.
Objectives: To validate SODA (severity of dyspepsia assessment) questionnaire in our population for evaluating symptoms severity in patients with dyspepsia. Materials and methods: Content and appearance validity were measured, and then a modified questionnaire was developed. A pilot test was made and reliability, construct validity and responsiveness were measured. Results: An adequate content and appearance validity were obtained. On the pilot test, reliability of the complete questionnaire and by components had Cronbach alpha values over 0,7. Construct validity of SODA was evaluated by correlating modified SODA results with SF-36 scores using Pearson test: -0.72 (p<0.001). When we compared results of modified SODA questionnaire and the score of a question about subjective perception of the disease using Spearman test we obtained similar results: 0.72 (p<0.001). Two means of SODA questionnaire scores, before and after treatment, were compared using Students T test, and a significant difference was found, (p<0.001) with a drop mean of 5.70 5.33. Conclusion: Modified SODA questionnaire meets all criteria of validity and it could be used to measure dyspepsia severity and its evolution in a Peruvian population.
Assuntos
Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Dispepsia/diagnóstico , Inquéritos e Questionários , Avaliação de Sintomas , Peru , Índice de Gravidade de DoençaRESUMO
With about 400 living species and 82 genera, rodents of the subfamily Sigmodontinae comprise one of the most diverse and more broadly distributed Neotropical mammalian clades. There has been much debate on the origin of the lineage or the lineages of sigmodontines that entered South America, the timing of entrance and different aspects of further diversification within South America. The ages of divergence of the main lineages and the crown age of the subfamily were estimated by using sequences of the interphotoreceptor retinoid binding protein and cytochrome b genes for a dense sigmodontine and muroid sampling. Bayesian inference using three fossil calibration points and a relaxed molecular clock estimated a middle Miocene origin for Sigmodontinae (â¼12Ma), with most tribes diversifying throughout the Late Miocene (6.9-9.4Ma). These estimates together results of analyses of ancestral area reconstructions suggest a distribution for the most recent common ancestor of Sigmodontinae in Central-South America and a South American distribution for the most recent common ancestor of Oryzomyalia.