Articulação entre alfabetização científica, resolução de problemas e pesquisa orientada e mapas conceituais como recursos didáticos qualificadores ao ensino (de ciências)

O presente artigo trata de metodologias educacionais, cunhadas inicialmente como recursos didáticos, na perspectiva de sua constituição como elementos integrantes de estratégias facilitadoras aos processos relacionais e circunscritos de ensino-aprendizagem. Tais elementos passam a ser defendidos no decorrer do texto como técnicas e/ou tecnologias de ensino. Trata-se, portanto, de uma abordagem teórica embasada por diversas literaturas do gênero, sob uma perspectiva de articulação daquelas como fins de composição de um plano de ensino qualificado para o ensino (de ciências).This article deals with educational methodologies, initially minted as teaching resources in view of its constitution as integral elements of facilitating strategies to relational processes and teaching-learning circumscribed. These elements come to be defended throughout the text as technical and/or teaching technologies. It is, therefore, a theoretical approach grounded by various literatures of the genre, from the perspective of those as joint composition purposes of a qualified teaching plan for education (of science).Fundos Nacionais através da FCT (Fundação para a Ciência e a Tecnologia) e cofinanciado pelo Fundo Europeu de Desenvolvimento Regional (FEDER) através do COMPETE 2020 – Programa Operacional Competitividade e Internacionalização (POCI) no âmbito do CIEC (Centro de Investigação em Estudos da Criança, da Universidade do Minho) com a referência POCI-01-0145-FEDER-007562CIEC - Centro de Investigação em Estudos da Criança, IE, UMinho (UI 317 da FCT), Portugalinfo:eu-repo/semantics/publishedVersio

Pathogenesis and Treatment of Usher Syndrome Type IIA

Usher syndrome (USH) is the most common form of deaf-blindness, with an estimated prevalence of 4.4 to 16.6 per 100,000 people worldwide. The most common form of USH is type IIA (USH2A), which is caused by homozygous or compound heterozygous mutations in the USH2A gene and accounts for around half of all USH cases. USH2A patients show moderate to severe hearing loss from birth, with diagnosis of retinitis pigmentosa in the second decade of life and variable vestibular involvement. Although hearing aids or cochlear implants can provide some mitigation of hearing deficits, there are currently no treatments aimed at preventing or restoring vision loss in USH2A patients. In this review, we first provide an overview of the molecular biology of the USH2A gene and its protein isoforms, which include a transmembrane protein (TM usherin) and an extracellular protein (EC usherin). The role of these proteins in the inner ear and retina and their impact on the pathogenesis of USH2A is discussed. We review animal cell-derived and patient cell-derived models currently used in USH2A research and conclude with an overview of potential treatment strategies currently in preclinical development and clinical trials

Bayesian Forecasting Of Temporal Gene Expression By Using An Autoregressive Panel Data Approach

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)We propose and evaluate a novel approach for forecasting gene expression over non-observed times in longitudinal trials under a Bayesian viewpoint. One of the aims is to cluster genes that share similar expression patterns over time and then use this similarity to predict relative expression at time points of interest. Expression values of 106 genes expressed during the cell cycle of Saccharomyces cerevisiae were used and genes were partitioned into five distinct clusters of sizes 33, 32, 21, 16, and 4. After removing the last observed time point, the agreements of signals (upregulated or downregulated) considering the predicted expression level were 72.7, 81.3, 76.2, 68.8, and 50.0%, respectively, for each cluster. The percentage of credibility intervals that contained the true values of gene expression for a future time was ~90%. The methodology performed well, providing a valid forecast of gene expression values by fitting an autoregressive panel data model. This approach is easily implemented with other time-series models and when Poisson and negative binomial probability distributions are assumed for the gene expression data. © FUNPEC-RP.152CAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorCNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico#APQ 00825, FAPEMIG, Fundação de Amparo à Pesquisa do Estado de Minas GeraisFUNARBE, Fundação Arthur BernardesCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Description Of The Hemipenial Morphology Of Tupinambis Quadrilineatus Manzani And Abe, 1997 (squamata, Teiidae) And New Records From Piauí, Brazil

Few data are available on the morphology of the hemipenis of teiid lizards, especially those of the recentlydefined genus Tupinambis, a widely-distributed group of large-bodied lizards. This study provides an illustrated description of the hemipenis of Tupinambis quadrilineatus, which is similar to that of other representatives of the Tupinambinae subfamily. New records of the species from the state of Piauí, in northeastern Brazil, are also presented. © Marcélia Basto da Silva et al.3616172Avila-Pires, T.C.S., (1995) Lizards of Brazilian Amazonia (Reptilia: Squamata), p. 706. , Zoologische VerhandelingenBarreto, L., Arzabe, C., Lima, Y.C.C., Herpetofauna da região de Balsas (2007) Cerrado Norte do Brasil, pp. 221-229. , In: Barreto L (Ed), USEB, PelotasBöhme, W., Zur Genitalmorphologie der Sauria: Funktionelle und stammesgeschichtliche Aspekte (1988) Bonner Zoologische Monographien, 27, pp. 1-176Colli, G.R., Péres Jr., A.K., Cunha, H.J., A new species of Tupinambis (Squamata: Teiidae) from Central Brazil, with an analysis of morphological and genetic variation in the genus (1998) Herpetologica, 54 (4), pp. 477-492Cope, E.D., On the hemipenes of the Sauria (1896) Proceedings of the Academy of Natural Sciences of Philadelphia, 48, pp. 461-467Costa, H.C., São Pedro, V.A., Péres, A.K., Feio, N.R., Reptilia, Squamata, Teiidae, Tupinambis longilineus: Distribution extension (2008) Check List, 4, pp. 267-268Dal Vechio, F., Recoder, R., Rodrigues, M.T., Zaher, H., The herpetofauna of the Estação Ecológica de Uruçuí-Una, state of Piauí, Brazil (2013) Papéis Avulsos de Zoologia, 53 (16), pp. 225-243. , doi: 10.1590/S0031-10492013001600001Dowling, H.G., Duellman, W.E., (1978) Systematic Herpetology: A Synopsis of Families and Higher Categories, p. 118. , HISS Publications, New YorkFerreira, L.V., Pereira, J.L.G., Avila-Pires, T.C.S., Chaves, P.P., Cunha, D.A., Furtado, C.S., Primeira ocorrência de Tupinambis quadrilineatus Manzani, Abe, 1997 (Squamata: Teiidae) no bioma Amazônia (2009) Boletim do Museu Paraense Emílio Goeldi Ciências Naturais, 4 (3), pp. 355-361Fitzgerald, L.A., Cook, J.A., Aquino, A.J., Molecular phylogenetics and conservation of Tupinambis (Sauria: Teiidae) (1999) Copeia, pp. 894-905. , doi: 10.2307/1447965Guimarães, T.C.S., Figueiredo, G.B., Salmito, W.E., Geographic distribution: Tupinambis quadrilineatus (2007) Herpetological Review, 38 (3), pp. 353-354Harvey, M.B., Ugueto, G.N., Gutberlet, R.L., Review of Teiid Morphology with a Revised Taxonomy and Phylogeny of the Teiidae (Lepidosauria: Squamata) (2012) Zootaxa, pp. 1-156. , http://zoobank.org/References/457C2AD0-E5CF-4A41-B6CB-11722700BC5FLangstroth, R.P., Adiciones probables y confirmadas para la saurofauna boliviana (2005) Kempffiana, 1 (1), pp. 101-128Levington, A.E., McDiarmid, R., Moody, S., Nickerson, M., Rosado, J., Sokol, O., Voris, H., Museum acronyms (1980) Second edition, Herpetological Review, 11, pp. 93-102Lima, A.C., Pimenta, F.E., Reptilia, Squamata, Teiidae, Tupinambis longilineus: Distribution extension (2008) Check List, 4, pp. 240-243Manzani, P.R., Abe, A., A new species of Tupinambis Daudin, 1802 (Squamata: Teiidae) from Brazil (1997) Boletim do Museu Nacional, Nova Série, Zoologia, 382, pp. 1-10Manzani, P.R., Abe, A., Sobre dois novos métodos de preparação de hemipênis de serpentes (1988) Memórias do Instituto Butantan, 50 (1), pp. 15-20Manzani, P.R., Abe, A.S., A new species of Tupinambis Daudin, 1803 from southeastern Brazil (Squamata, Teiidae) (2002) Arquivos do Museu Nacional, Rio de Janeiro, 60, pp. 295-302Mesquita, D.O., Colli, G.R., França, F.G.R., Vitt, L.J., Ecology of a Cerrado lizard assemblage in the Jalapão region of Brazil (2006) Copeia 2006, (3), pp. 460-471. , doi: 10.1643/0045-8511(2006)2006[460:EOACLA]2.0.CO;2Moreira, L.A., Fenolio, D.B., Silva, H.L.R., Silva Jr., N.J., A preliminary list of the Herpetofauna from termite mounds of the cerrado in the Upper Tocantins river valley (2009) Papéis Avulsos de Zoologia, 49 (15), pp. 183-189. , http://www.scielo.br/scielo.php?pid=S0031-10492009001500001&script=sci_arttextMyers, C.H., Williams, E.E., McDiarmid, R.W., A new anoline lizard (Phenacosaurus) from the highland of Cerro de la Neblina, Southern Venezuela (1993) American Museum Novitates 3070, pp. 1-15Pesantes, O.S., A method for preparing the hemipenis of preserved snakes (1994) Journal of Herpetology, 28, pp. 93-95. , doi: 10.2307/1564686Recoder, R., Nogueira, C., Composição e diversidade de répteis na região sul do Parque Nacional Grande Sertão Veredas, Brasil Central (2007) Biota Neotropica, 7 (3), pp. 267-278. , doi: 10.1590/S1676-06032007000300029Recoder, R.S., Junior, M.T., Camacho, A., Nunes, P.M.S., Mott, T., Valdujo, P.H., Ghellere, J.M., Rodrigues, M.T., Répteis da Estação Ecológica Serra Geral do Tocantins, Brasil Central (2011) Biota Neotropica, 11 (1), pp. 263-282. , doi: 10.1590/S1676-06032011000100026Savage, J.M., On terminology for the description of the hemipenis of squamate reptiles (1997) Herpetological Journal, 7, pp. 23-25. , doi: 10.1590/S1984-46702011000400005Silva Jr., N.J., Silva, H.L.R., Rodrigues, M.T., Valle, N.C.U., Costa, M.C., Castro, S.P., Linder, E.T., Sites Jr., J.W., A fauna de vertebrados do vale do alto rio Tocantins em áreas de usinas hidrelétricas (2005) Estudos, 32, pp. 57-101Silveira, A.L., Reptilia, Squamata, Teiidae, Tupinambis quadrilineatus: Distribution extension and geographic distribution map (2009) Check List, 5 (3), pp. 442-445Taylor, J.F., Genus Tupinambis, Tegus (2003) Reptilia, 27, pp. 43-49Vitt, L.J., Cadwell, J.P., Colli, G.R., Garda, A.A., Mesquita, D.O., França, F.G.R., Shepard, D.B., Silva, V.N., Uma atualização do guia fotográfico dos répteis e anfíbios da região do Jalapão no Cerrado brasileiro (2005) Special Publications in Herpetology, San Noble Oklahoma Museum of Nature History, 2, pp. 1-24Werneck, F.P., Colli, G.R., The lizard assemblage from seasonally dry tropical forest enclaves in the Cerrado biome, Brazil, and its association with the pleistocenic arc (2006) Journal of Biogeography, 33, pp. 1983-1992. , doi: 10.1111/j.1365-2699.2006.01553.xZaher, H., Prudente, A.L.C., Hemipenis of Siphlophis (Serpentes, Xenodontinae) and Techniques of Hemipenial Preparation in Snakes: A Response to Dowling (2003) Herpetological Review, 34, pp. 302-30

Cardamonin, a schistosomicidal chalcone from Piper aduncum L. (Piperaceae) that inhibits Schistosoma mansoni ATP diphosphohydrolase

AbstractBackground: Schistosomiasis is one of the world's major public health problems, and praziquantel (PZQ) is the only available drug to treat this neglected disease with an urgent demand for new drugs. Recent studies indicated that extracts from Piper aduncum L. (Piperaceae) are active against adult worms of Schistosoma mansoni, the major etiological agent of human schistosomiasis.Purpose: We investigated the in vitro schistosomicidal activity of cardamonin, a chalcone isolated from the crude extract of P. aduncum. Also, this present work describes, for the first time, the S. mansoni ATP diphosphohydrolase inhibitory activity of cardamonin, as well as, its molecular docking with S. mansoni ATPDase1, in order to investigate its mode of inhibition.Methods: In vitro schistosomicidal assays and confocal laser scanning microscopy were used to evaluate the effects of cardamonin on adult schistosomes. Cell viability was measured by MTT assay, and the S. mansoni ATPase activity was determined spectrophotometrically. Identification of the cardamonin binding site and its interactions on S. mansoni ATPDase1 were made by molecular docking experiments.Results: A bioguided fractionation of the crude extract of P. aduncum was carried out, leading to identification of cardamonin as the active compound, along with pinocembrin and uvangoletin. Cardamonin (25, 50, and 100 µM) caused 100% mortality, tegumental alterations, and reduction of oviposition and motor activity of all adult worms of S. mansoni, without affecting mammalian cells. Confocal laser scanning microscopy showed tegumental morphological alterations and changes on the numbers of tubercles of S. mansoni worms in a dose-dependent manner. Cardamonin also inhibited S. mansoni ATP diphosphohydrolase (IC50 of 23.54 µM). Molecular docking studies revealed that cardamonin interacts with the Nucleotide-Binding of SmATPDase 1. The nature of SmATPDase 1–cardamonin interactions is mainly hydrophobic and hydrogen bonding.Conclusion: This report provides evidence for the in vitro schistosomicidal activity of cardamonin and demonstrated, for the first time, that this chalcone is highly effective in inhibiting S. mansoni ATP diphosphohydrolase, opening the route to further studies of chalcones as prototypes for new S. mansoni ATP diphosphohydrolase inhibitors

Saccharomyces Cerevisiae Transcriptional Reprograming Due To Bacterial Contamination During Industrial Scale Bioethanol Production

Background: The bioethanol production system used in Brazil is based on the fermentation of sucrose from sugarcane feedstock by highly adapted strains of the yeast Saccharomyces cerevisiae. Bacterial contaminants present in the distillery environment often produce yeast-bacteria cellular co-aggregation particles that resemble yeast-yeast cell adhesion (flocculation). The formation of such particles is undesirable because it slows the fermentation kinetics and reduces the overall bioethanol yield. Results: In this study, we investigated the molecular physiology of one of the main S. cerevisiae strains used in Brazilian bioethanol production, PE-2, under two contrasting conditions: typical fermentation, when most yeast cells are in suspension, and co-aggregated fermentation. The transcriptional profile of PE-2 was assessed by RNA-seq during industrial scale fed-batch fermentation. Comparative analysis between the two conditions revealed transcriptional profiles that were differentiated primarily by a deep gene repression in the co-aggregated samples. The data also indicated that Lactobacillus fermentum was likely the main bacterial species responsible for cellular co-aggregation and for the high levels of organic acids detected in the samples. Conclusions: Here, we report the high-resolution gene expression profiling of strain PE-2 during industrial-scale fermentations and the transcriptional reprograming observed under co-aggregation conditions. This dataset constitutes an important resource that can provide support for further development of this key yeast biocatalyst.141Basso, L.C., Amorim, H.V., Oliveira, A.J., Lopes, M.L., Yeast selection for fuel ethanol production in Brazil (2008) FEMS Yeast Res, 8, pp. 1155-1163Carvalho-Netto, O.V., Carazzolle, M.F., Rodrigues, A., Bragança, W.O., Costa, G.G.L., Argueso, J.L., A simple and effective set of PCR-based molecular markers for the monitoring of the Saccharomyces cerevisiae cell population during bioethanol fermentation (2013) J Biotechnol, 168, pp. 701-709Silva-Filho, E.A., Santos, S.K.B., Resende, A.D.M., Morais, J.O.F., Morais, M.A., Ardaillon Simões, D., Yeast population dynamics of industrial fuel-ethanol fermentation process assessed by PCR-fingerprinting (2005) Antonie Van Leeuwenhoek, 88, pp. 13-23Argueso, J.L., Carazzolle, M.F., Mieczkowski, P.A., Duarte, F.M., Carvalho-Netto, O.V., Missawa, S.K., Genome structure of a Saccharomyces cerevisiae strain widely used in bioethanol production (2009) Genome Res, 19, pp. 2258-2270Soares, E.V., Flocculation in Saccharomyces cerevisiae: a review (2011) J Appl Microbiol, 110, pp. 1-18Verstrepen, K.J., Klis, F.M., Flocculation, adhesion and biofilm formation in yeasts (2006) Mol Microbiol, 60, pp. 5-15Amorim, H.V., Lopes, M.L., Castro Oliveira, J.V., Buckeridge, M.S., Goldman, G.H., Scientific challenges of bioethanol production in Brazil (2011) Appl Microbiol Biotechnol, 91, pp. 1267-1275Abreu-Cavalheiro, A., Monteiro, G., Solving ethanol production problems with genetically modified yeast strains (2014) Braz J Microbiol, 44 (3), pp. 665-671Lucena, B.T.L., dos Santos, B.M., Moreira, J.L., Moreira, A.P.B., Nunes, A.C., Azevedo, V., Diversity of lactic acid bacteria of the bioethanol process (2010) BMC Microbiol, 10, p. 298Yokoya, F., Oliva-Neto, P., Características da floculação de leveduras por Lactobacillus fermentum (1991) Brazilian J Microbiol, 22, pp. 12-16Tiukova, I., Eberhard, T., Passoth, V., 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