Variáveis associadas ao desempenho cognitivo tardio de pacientes com traumatismo crânio-encefálico grave

Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde. Programa de Pós-Graduação em Ciências MédicasObjetivos: O trauma cranioencefalico (TCE) e uma das principais causas de mortalidade e morbidade. Ha raros estudos prospectivos que investigam a associacao de variaveis clinicas e laboratoriais da fase aguda do TCE e o prognostico cognitivo tardio dos pacientes vitimas de TCE. Este estudo tem como objetivo identificar variaveis clinicas, laboratoriais e biomarcadores de lesao tecidual associados ao prognostico cognitivo em pacientes vitimas de TCE. Metodos: Foram coletadas prospectivamente as variaveis da internacao hospitalar de 234 pacientes consecutivos com TCE grave (GCS admissao . 8). Dos 172 sobreviventes, uma amostra representada de 46 pacientes realizaram avaliacao cognitiva (composta de 15 testes neuropsicologicos) em media 3 (+ - 1,8) anos apos a hospitalizacao. Um sub-grupo de 22 pacientes que foram avaliados cognitivamente realizaram analise dos niveis plasmaticos de TBARS (indicativo de dano por estresse oxidativo a lipideos) e Carbonil (indicador de dano por estresse oxidativo a proteinas) em amostras de sangue coletadas na fase aguda de TCE (mediana de 10, 30 e 70 horas apos o impacto do TCE). Um grupo controle (n=23) pareado por sexo, idade e nivel socio-educacional foi avaliado cognitivamente para comparacao com os pacientes. Resultados: A media de idade dos pacientes foi 34 (+ - 13) anos sendo 85% do sexo masculino, com escolaridade media de 9 (+ - 4,7) anos. Os pacientes apresentaram um desempenho inferior em todos os testes neuropsicologicos. A analise por regressao linear evidenciou uma forte associacao independente (R coeficiente = 0,6 a 0,8) entre maior escolaridade e menor idade e o desempenho cognitivo em 14 dos 15 testes neuropsicologicos avaliados. O desempenho nos testes cognitivos nao esteve associado ao genero, escore de admissao na Escala de Coma de Glasgow (ECG), exame das pupilas, presenca de trauma em outros orgaos, e classificacao da escala de Marshall na tomografia computadorizada na admissao (TC). Niveis elevados de glicose e presenca de hemorragia sub-aracnoide na TC mostraram-se independentemente associados a um menor desempenho no teste de Retencao de Aprendizagem de Rey e de Memoria Logica respectivamente. Embora os niveis plasmaticos de TBARS e Carbonil tenham sido significativamente elevados na fase aguda do TCE, estes biomarcadores nao se mostraram associados ao desempenho cognitivo dos pacientes. Conclusoes: Baixa escolaridade e idade mais avancada sao preditores independentes de pior desempenho cognitivo tardio apos o TCE grave. O exame de TC e glicemia mostraram limitada capacidade de predicao do desempenho cognitivo enquanto que o exame das pupilas, ECG na admissao, presenca de trauma associado nao foram preditores do desempenho em nenhum dos testes neuropsicologicos avaliados. A medida dos niveis plasmaticos de TBARS e Carbonil tambem nao se mostrou associada com o desempenho cognitivo dos pacientes. A identificacao de variaveis clinicas e laboratoriais associadas ao prognostico cognitivo apos o TCE grave permanece um desafio para a area de neuropsicologia clinica

Estudo de transporte sinaptossomal de glutamato em camundongos que não expressam a proteína prion celular

Dissertação (mestrado) - Universidade Federal de Santa Catarina. Centro de Ciências Biológicas. Programa de Pós-Graduação em Neurociências

Resumos em andamento - Saúde Coletiva

Resumos em andamento - Saúde Coletiv

Resumos em andamento - Saúde Coletiva

Resumos em andamento - Saúde Coletiv

NEOTROPICAL ALIEN MAMMALS: a data set of occurrence and abundance of alien mammals in the Neotropics

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal-central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus, Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. (n = 37,782), Sus scrofa (n = 6,730), and Canis familiaris (n = 10,084); 17 species were represented by only one record (e.g., Syncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans). Primates have the highest number of species in the data set (n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata, and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation-related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data

Brazilian Flora 2020: Leveraging the power of a collaborative scientific network

International audienceThe shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impediment and the biodiversity crisis are widely recognized, highlighting the urgent need for reliable taxonomic data. Over the past decade, numerous countries worldwide have devoted considerable effort to Target 1 of the Global Strategy for Plant Conservation (GSPC), which called for the preparation of a working list of all known plant species by 2010 and an online world Flora by 2020. Brazil is a megadiverse country, home to more of the world's known plant species than any other country. Despite that, Flora Brasiliensis, concluded in 1906, was the last comprehensive treatment of the Brazilian flora. The lack of accurate estimates of the number of species of algae, fungi, and plants occurring in Brazil contributes to the prevailing taxonomic impediment and delays progress towards the GSPC targets. Over the past 12 years, a legion of taxonomists motivated to meet Target 1 of the GSPC, worked together to gather and integrate knowledge on the algal, plant, and fungal diversity of Brazil. Overall, a team of about 980 taxonomists joined efforts in a highly collaborative project that used cybertaxonomy to prepare an updated Flora of Brazil, showing the power of scientific collaboration to reach ambitious goals. This paper presents an overview of the Brazilian Flora 2020 and provides taxonomic and spatial updates on the algae, fungi, and plants found in one of the world's most biodiverse countries. We further identify collection gaps and summarize future goals that extend beyond 2020. Our results show that Brazil is home to 46,975 native species of algae, fungi, and plants, of which 19,669 are endemic to the country. The data compiled to date suggests that the Atlantic Rainforest might be the most diverse Brazilian domain for all plant groups except gymnosperms, which are most diverse in the Amazon. However, scientific knowledge of Brazilian diversity is still unequally distributed, with the Atlantic Rainforest and the Cerrado being the most intensively sampled and studied biomes in the country. In times of “scientific reductionism”, with botanical and mycological sciences suffering pervasive depreciation in recent decades, the first online Flora of Brazil 2020 significantly enhanced the quality and quantity of taxonomic data available for algae, fungi, and plants from Brazil. This project also made all the information freely available online, providing a firm foundation for future research and for the management, conservation, and sustainable use of the Brazilian funga and flora