Morphological characterization of the nasopalatine region in human fetuses and its association to pathologies

The nasopalatine region is composed of structures such as the vomeronasal organ and nasopalatine duct. The nasopalatine duct may provide the communication of the mouth to the nasal cavity in human fetuses and can be obliterated in an adult human. Knowledge on the development of the nasopalatine region and nasopalatine duct in humans is necessary for understanding the morphology and etiopathogenesis of lesions that occur in this region. Objective: The aim of the present study was to describe the morphological aspects of the nasopalatine region in human fetuses and correlate these aspects with the development of pathologies in this region. Material and Methods: Five human fetuses with no facial or palatine abnormalities were used for the acquisition of specimens from the nasopalatine region. After demineralization, the specimens were histologically processed. Histological cuts were stained with methylene blue to orient the cutting plane and hematoxylin-eosin for the descriptive histological analysis. Results: The age of the fetuses was 8.00, 8.25, 9.00 and 9.25 weeks, and it was not possible to determine the age in the last one. The incisive canal was observed in all specimens as an opening delimited laterally by the periosteum and connecting oral and nasal cavity. The nasopalatine duct is an epithelial structure with the greatest morphological variation, with either unilateral or bilateral occurrence and total patent, partial patent and islet forms. The vomeronasal organ is a bilateral epithelized structure located alongside the nasal septum above the incisive canal in all the fetuses. Conclusions: The incisive canal, nasopalatine duct and vomeronasal organ are distinct anatomic structures. The development of nasopalatine duct cysts may occur in all forms of the nasopalatine duct

Is the Erich arch bar the best intermaxillary fixation method in maxillofacial fractures? : a systematic review

Background: Intermaxillary fixation is used to achieve proper occlusion during and after oral and maxillofacial fracture surgery. The aim of this systematic review was to compare Erich arch bar fixation with other intermaxillary fixation methods in terms of the operating time, safety during installation, oral health maintenance and occlusal stability. Material and Methods: An electronic online search was conducted of the Scirus, PubMed, Ovid, Cochrane Library and VHL databases. A clinical trial dating from the inception of the data bases until August 2013 was selected. Studies that compared Erich arch bars with other intermaxillary fixation methods in patients older than 18 years-old were included. The studies were assessed by two independent reviewers. The methodological quality of each article was analyzed. Results: Nine hundred and twenty-five manuscripts were found. Seven relevant articles were analyzed in this review. The risk of bias was considered moderate for four studies and high for three clinical trials. Conclusions: There is not enough evidence to conclude that the Erich arch bar is the best intermaxillary fixation method in cases of oral and maxillofacial fracture

FASN expression, angiogenesis and lymphangiogenesis in central and peripheral giant cell lesions

Central giant cell lesion (CGCL) and peripheral giant cell lesion (PGCL) are non-neoplastic proliferative processes of the jaws. PGCL is a reactive process induced by irritant local factors and CGCL is an intra-osseous lesion of unknown etiology. Both lesions exhibit similar histologic features showing abundant mononuclear cells, admixed with a large number of multinucleated giant cells and a rich vascularized stroma with extravasated erythrocytes, hemosiderin deposition, and blood-filled pools. Recent studies have linked fatty acid synthase (FASN) with angiogenesis. Objective: To evaluate angiogenesis and lymphangiogenesis and their relationship with FASN expression in CGCL and PGCL. Material and Methods: Thirteen CGCL and 14 PGCL of the jaws were selected for immunoexpression of FASN; CD34 and CD105 (to assess blood microvessel density [MVD] and microvessel area [MVA]); and D2-40 (to assess lymphatic MVD and MVA). Results: Within PGCL and CGCL, MVD-CD34 was signifcantly higher than MVD-CD10S, followed by MVD-D2-40. Moreover, a signifcantly higher number of FASN-positive multinucleated giant cells than mononuclear cells were observed. Between PGCL and CGCL, only MVD-CD34 and all MVA were signifcantly higher in PGCL. Positive correlation between MVA-CD10S with FASNpositive mononuclear cells in both lesions was observed. Conclusions: Our results show both lesions exhibiting similar levels of FASN expression and neoangiogenesis, suggesting constitutive processes that regulate tissue maintenance

ATLANTIC EPIPHYTES: a data set of vascular and non-vascular epiphyte plants and lichens from the Atlantic Forest

Epiphytes are hyper-diverse and one of the frequently undervalued life forms in plant surveys and biodiversity inventories. Epiphytes of the Atlantic Forest, one of the most endangered ecosystems in the world, have high endemism and radiated recently in the Pliocene. We aimed to (1) compile an extensive Atlantic Forest data set on vascular, non-vascular plants (including hemiepiphytes), and lichen epiphyte species occurrence and abundance; (2) describe the epiphyte distribution in the Atlantic Forest, in order to indicate future sampling efforts. Our work presents the first epiphyte data set with information on abundance and occurrence of epiphyte phorophyte species. All data compiled here come from three main sources provided by the authors: published sources (comprising peer-reviewed articles, books, and theses), unpublished data, and herbarium data. We compiled a data set composed of 2,095 species, from 89,270 holo/hemiepiphyte records, in the Atlantic Forest of Brazil, Argentina, Paraguay, and Uruguay, recorded from 1824 to early 2018. Most of the records were from qualitative data (occurrence only, 88%), well distributed throughout the Atlantic Forest. For quantitative records, the most common sampling method was individual trees (71%), followed by plot sampling (19%), and transect sampling (10%). Angiosperms (81%) were the most frequently registered group, and Bromeliaceae and Orchidaceae were the families with the greatest number of records (27,272 and 21,945, respectively). Ferns and Lycophytes presented fewer records than Angiosperms, and Polypodiaceae were the most recorded family, and more concentrated in the Southern and Southeastern regions. Data on non-vascular plants and lichens were scarce, with a few disjunct records concentrated in the Northeastern region of the Atlantic Forest. For all non-vascular plant records, Lejeuneaceae, a family of liverworts, was the most recorded family. We hope that our effort to organize scattered epiphyte data help advance the knowledge of epiphyte ecology, as well as our understanding of macroecological and biogeographical patterns in the Atlantic Forest. No copyright restrictions are associated with the data set. Please cite this Ecology Data Paper if the data are used in publication and teaching events. © 2019 The Authors. Ecology © 2019 The Ecological Society of Americ

Digital competence of higher education professors

This article aims to analyse the differences associated with the variables of teaching and institutional nature in the level of proficiency of teachers in digital competences, using the DigCompEdu framework as theoretical reference. A quantitative approach was used and the data collection strategy was based on an online survey. The sample was composed of 846 Portuguese higher education professors linked to 37 universities and 76 polytechnic institutes. The results indicate that characteristics such as working at PhD program level, teaching online and being linked to polytechnic institutes are associated with higher levels of digital competence.O objetivo deste artigo é analisar as diferenças associadas às variáveis ​​de caráter docente e institucional no nível de competências digitais em professores, tomando como referencial teórico o marco DigCompEdu. Adotou-se abordagem quantitativa e a estratégia de coleta de dados baseou-se em questionário online. A amostra foi constituída por 846 professores portugueses do ensino superior vinculados a 37 universidades e 76 institutos politécnicos. Os resultados indicam que características como trabalhar em nível de doutorado, lecionar e-learning e estar vinculado a institutos politécnicos estão associadas a níveis mais elevados de competência digital.El objetivo de este artículo es analizar las diferencias asociadas a las variables de carácter docente e institucional en el nivel de competencias digitales en los docentes, tomando como referencia teórica el marco DigCompEdu. Se adoptó un enfoque cuantitativo y la estrategia de recopilación de datos se basó en una encuesta en línea. La muestra estuvo compuesta por 846 profesores portugueses de educación superior vinculados a 37 universidades y 76 institutos politécnicos. Los resultados indican que características como trabajar a nivel de programa de doctorado, impartir e-learning y estar vinculado a institutos politécnicos se asocian a mayores niveles de competencia digital

Arco barra de Erich ou parafuso autorrosqueante? Qual é o melhor método de fixação maxilo-mandibular? Uma revisão de literatura

O objetivo dessa revisão da literatura foi determinar, entre Arco Barra de Erich e Parafuso autorrosqueante, qual é o melhor método de fixação maxilo-mandibular. A busca bibliográfica foi realizada por meio da Biblioteca Virtual em Saúde (BVS), nas seguintes bases de dados: LILACS (Literatura Latino Americana e do Caribe em Ciências da Saúde), SciELO (ScientificElectronic Library Online), MEDLINE (Literatura Internacional em Ciências da Saúde) e COCHRANE (Cochrane Library), IBECS e BIREME, até maio de 2012. Foram utilizadas as seguintes palavras-chave e as combinações dessas palavras no idioma Inglês: Intermaxillary Fixation, Intermaxillary Screws Fixation, Maxillomandibular Fixation, Maxillomandibular Screws Fixation, Erich Arch Bar, Erich Arch Bars, Mandibular fracture repair e Maxillofacial fracture fixation. Foram incluídos artigos relacionados com a fixação intermaxilar com a utilização de arcos barras de Erich e parafusos corticais. Foram analisados os artigos em seres humanos em que esses métodos foram avaliados juntos ou separadamente e do total de artigos 98 foram lidos na íntegra. Após a leitura, foram incluídos 20 artigos e excluídos 78 por não preencherem os critérios de inclusão. Observou-se que arco barras de Erich é o método mais utilizado pela maioria dos cirurgiões bucomaxilofaciais, no entanto, apesar de efetivo apresenta desvantagens. Como alternativa, os parafusos autorrosqueantes tem demonstrado eficiência e consideráveis vantagens. Entretanto, para que esse método de fixação maxilo-mandibular seja implementado com segurança, é necessário que haja mais estudos comparando as duas técnicas, pois durante a revisão da literatura, foi encontrado apenas um ensaio clínico comparando-as

Arco barra de Erich ou parafuso autorrosqueante? Qual é o melhor método de fixação maxilo-mandibular? Uma revisão de literaturadoi: http://dx.doi.org/10.5892/ruvrv.2013.111.570578

O objetivo dessa revisão da literatura foi determinar, entre Arco Barra de Erich e Parafuso autorrosqueante, qual é o melhor método de fixação maxilo-mandibular. A busca bibliográfica foi realizada por meio da Biblioteca Virtual em Saúde (BVS), nas seguintes bases de dados: LILACS (Literatura Latino Americana e do Caribe em Ciências da Saúde), SciELO (ScientificElectronic Library Online), MEDLINE (Literatura Internacional em Ciências da Saúde) e COCHRANE (Cochrane Library), IBECS e BIREME, até maio de 2012. Foram utilizadas as seguintes palavras-chave e as combinações dessas palavras no idioma Inglês: Intermaxillary Fixation, Intermaxillary Screws Fixation, Maxillomandibular Fixation, Maxillomandibular Screws Fixation, Erich Arch Bar, Erich Arch Bars, Mandibular fracture repair e Maxillofacial fracture fixation. Foram incluídos artigos relacionados com a fixação intermaxilar com a utilização de arcos barras de Erich e parafusos corticais. Foram analisados os artigos em seres humanos em que esses métodos foram avaliados juntos ou separadamente e do total de artigos 98 foram lidos na íntegra. Após a leitura, foram incluídos 20 artigos e excluídos 78 por não preencherem os critérios de inclusão. Observou-se que arco barras de Erich é o método mais utilizado pela maioria dos cirurgiões bucomaxilofaciais, no entanto, apesar de efetivo apresenta desvantagens. Como alternativa, os parafusos autorrosqueantes tem demonstrado eficiência e consideráveis vantagens. Entretanto, para que esse método de fixação maxilo-mandibular seja implementado com segurança, é necessário que haja mais estudos comparando as duas técnicas, pois durante a revisão da literatura, foi encontrado apenas um ensaio clínico comparando-as