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Search Results: 1 - 10 of 8611 matches for " Thalita Regina Tuleski "
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Maize Root Lectins Mediate the Interaction with Herbaspirillum seropedicae via N-Acetyl Glucosamine Residues of Lipopolysaccharides
Eduardo Balsanelli, Thalita Regina Tuleski, Valter Antonio de Baura, Marshall Geoffrey Yates, Leda Satie Chubatsu, Fabio de Oliveira Pedrosa, Emanuel Maltempi de Souza, Rose Adele Monteiro
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0077001
Abstract: Herbaspirillum seropedicae is a plant growth-promoting diazotrophic betaproteobacterium which associates with important crops, such as maize, wheat, rice and sugar-cane. We have previously reported that intact lipopolysaccharide (LPS) is required for H. seropedicae attachment and endophytic colonization of maize roots. In this study, we present evidence that the LPS biosynthesis gene waaL (codes for the O-antigen ligase) is induced during rhizosphere colonization by H. seropedicae. Furthermore a waaL mutant strain lacking the O-antigen portion of the LPS is severely impaired in colonization. Since N-acetyl glucosamine inhibits H. seropedicae attachment to maize roots, lectin-like proteins from maize roots (MRLs) were isolated and mass spectrometry (MS) analysis showed that MRL-1 and MRL-2 correspond to maize proteins with a jacalin-like lectin domain, while MRL-3 contains a B-chain lectin domain. These proteins showed agglutination activity against wild type H. seropedicae, but failed to agglutinate the waaL mutant strain. The agglutination reaction was severely diminished in the presence of N-acetyl glucosamine. Moreover addition of the MRL proteins as competitors in H. seropedicae attachment assays decreased 80-fold the adhesion of the wild type to maize roots. The results suggest that N-acetyl glucosamine residues of the LPS O-antigen bind to maize root lectins, an essential step for efficient bacterial attachment and colonization.
Análise psicossocial do posicionamento de adolescentes com rela??o à violência policial
Torres, Ana Raquel Rosas;Faria, Margareth Regina G. Veríssimo de;Guimar?es, Juliany Gon?alves;Martignoni, Thalita Vargas Leite;
Psicologia em Estudo , 2007, DOI: 10.1590/S1413-73722007000200003
Abstract: the objective of this work was to investigate high school students' positioning towards the use of violence by the police in order to solve a crime. our starting point is that this positioning is anchored on systems of social beliefs and attitudes which regulate our daily relationships. thus, we used social beliefs and attitudes related to human rights, democracy and authoritarianism in order to investigate those anchorages. the participants were 140 students high school students from a public school located in the perifery of goiania (brazil). the results showed the importance of social beliefs and attitudes related to human rights and democracy in order to understand students positioning related to police violence. these results are discussed stressing the importance of a kind of educational system where those values are included.
Effect of light curing modes and ethanol immersion media on the susceptibility of a microhybrid composite resin to staining
Aguiar, Flávio Henrique Baggio;Oliveira, Thalita Regina Vieira e;Lima, Débora Alves Nunes Leite;Paulillo, Luis Alexandre Maffei Sartini;Lovadino, José Roberto;
Journal of Applied Oral Science , 2007, DOI: 10.1590/S1678-77572007000200006
Abstract: the aim of this in vitro study was to evaluate the susceptibility of a hybrid composite resin (filtek z250 - 3m espe) to staining, when light cured in four different modes and immersed in two different media. composite resin specimens were randomly prepared and polymerized according to the experimental groups (conventional - 550 mw/cm2 / 30 seconds; soft start - 300mw/cm2 / 10 seconds + 550 mw/cm2 / 20 seconds; high intensity - 1060 mw/cm2 - 10 seconds; pulse delay - 550 mw/cm2 - 1 seconds + 60 seconds of waiting time + 550 mw/cm2 - 20 seconds) and immersed in one of two media (distilled water or absolute ethanol) for 24h. next, the specimens were immersed in a 2% methylene blue solution for 12 hours. afterwards, the specimens were washed and prepared for the spectrophotometric analysis. for statistical analysis, two-way anova (4x2) and tukey's test were performed on the data at 0.05 confidence level. soft start showed the least staining, and was statistically different from the high intensity and pulse delay light curing modes (p<0.05). conventional light curing unit did not show statistically significant differences from any other groups (p>0.05). there were no significant differences between the two immersion media (p>0.05). the soft start polymerization mode showed lower susceptibly of the composite resin to staining than high intensity and pulse delay, irrespective of the immersion medium.
Transtorno de déficit de aten??o/hiperatividade e psicologia histórico-cultural
Eidt, Nadia Mara;Tuleski, Silvana Calvo;
Cadernos de Pesquisa , 2010, DOI: 10.1590/S0100-15742010000100007
Abstract: attention-deficit hyperactivity disorder has been appointed as the current justification for the scholastic failings of a significant number of children, who are attributed responsibility for not learning and the school and the society in which they find themselves being exempt from analysis. the situation becomes much more alarming as the literature about it points out the difficulty of diagnosing and intervening in this type of disorder due to a lack of clarity about what its clinical symptoms are and the non-existence of consistent studies about the future consequences of the use of stimulants in children. to discuss these issues, the first part of the article presents the hegemonic concept of the disorder and its understanding of the childa€?s psyche. the second one deals with the way in which historical and cultural psychology analyses the development of attention and the voluntary control of human behavior, by given a new dimension to the understanding of the disorder. finally, some reflections are offered about the teaching-learning process in children with partial development of superior psychological functions, as well as and the role of psychology and teaching in understanding this phenomenon so that they can provide support for the practical measures to be adopted with regard to the problem.
Repensando os distúrbios de aprendizagem a partir da psicologia histórico-cultural
Tuleski, Silvana Calvo;Eidt, Nadia Mara;
Psicologia em Estudo , 2007, DOI: 10.1590/S1413-73722007000300010
Abstract: historical and cultural psychology foregrounds that the biological factor determines the basis of the individuals? innate reactions. the entire system of acquired reactions, determined more on the structure of the child?s environment than on biological presuppositions, is constituted on this basis. if all human beings acquire their capacities through the process of cultural appropriation, current understanding on learning disabilities may be re-designed. it may be shown that adequate and consistent mediations may be revolutionary when they concretize the cultural talent in the case that the biological talent fails to reveal itself as expected.
Psicologia Histórico-Cultural e desenvolvimento da aten??o voluntária: novo entendimento para o TDAH
Leite, Hilusca Alves;Tuleski, Silvana Calvo;
Psicologia Escolar e Educacional , 2011, DOI: 10.1590/S1413-85572011000100012
Abstract: in this article we discuss the development of voluntary attention based on historical-cultural psychology, aiming at a new understanding of attention deficit hyperactivity disorder (adhd). this goes against the hegemonic conceptions regarding the problem, understood as caused by dysfunction in one′s organism. in this work we first make an exposition of this predominant ideas on the subject, detaching data regarding the medicine sales to deal with cases of adhd and problems related to the its diagnosis. later we present the understanding of human development in historical-cultural psychology, emphasizing the development of the voluntary attention, and the possibilities of overcoming the hegemonic conception of adhd. we conclude that the employed theoretical perspective makes possible not only a new way to look at problems of attention deficit and hyperactive behaviors, but also proposes new practices capable of promoting attention development.
Book Review - Governan a na Empresa Familiar: Implementa o e Prática
Thalita Pereira Barbosa
Revista de Administra??o Contemporanea , 2009,
Deficiência de zinco em crian?as e adolescentes com doen?as hepáticas cr?nicas
Pereira, Thalita Cremonesi;Hessel, Gabriel;
Revista Paulista de Pediatria , 2009, DOI: 10.1590/S0103-05822009000300014
Abstract: objective: to review the literature related to zinc and zinc level in children and adolescents with chronic liver diseases. data sources: the following key-words were used to retrieve studies from pubmed, scielo and web of science databases: "zinc", "liver diseases", "child" and "adolescent". national and international studies published from 1998-2008 were selected as well as classical studies on the theme. data synthesis: zinc is an essential mineral for children's health with several functions in the organism, improving defense mechanisms, growth, sexual and cognitive development. children with liver diseases seem to be more susceptible to zinc deficiency than healthy children, since their liver illness modifies the metabolism of this mineral, mainly regarding the distribution on tissues and elimination. the zinc level in the plasma seems to be low in these patients, but this index does not reflect the real zinc status in the organism; additionally, the urinary elimination of zinc seems to increase. conclusions: more studies are needed in order to understand zinc status in children and adolescents with chronic liver diseases.
Successful prevention of HIV transmission from mother to infant in Brazil using a multidisciplinary team approach
Nogueira, Susie A.;Abreu, Thalita;Oliveira, Ricardo;Araújo, Lúcia;Costa, Tomaz;Andrade, Miriam;Psic, M. Fátima Garcia;Machado, Elizabeth;Rodrigues, Káris;Mercadante, Elizabeth Regina;Fernandes, Iraína;Sapia, M. Concei??o;Lambert, John S.;
Brazilian Journal of Infectious Diseases , 2001, DOI: 10.1590/S1413-86702001000200006
Abstract: objectives: to determine the hiv vertical transmission rate (vtr) and associated risk factors by use of zidovudine and infant care education in brazil. methods: since 1995, a prospective cohort of hiv infected pregnant women has been followed at the federal university of rio de janeiro. a multidisciplinary team was established to implement the best available strategy to prevent maternal-infant hiv transmission. patients with aids or low cd4 and high viral load received anti-retroviral drugs in addition to zidovudine. children were considered infected if they had 2 positive pcr-rna tests between 1 and 4 months of age, or were hiv antibody positive after 18 months. education regarding infant treatment and use of formula instead of breast feeding was provided. results: between 1995 and august, 2000, hiv status was determined for 145 infants. compliance with intra-partum treatment, infant treatment and use of formula was 88.2%. intra-partum zidovudine treatment was completed in 134/145 (92.6%) of patients; 88.1% had rupture of membranes < 4 hours; 85.4% of mothers were asymptomatic. the mean cd4 count was 428.4 cells and mean viral load 39,050 copies. hiv vertical transmission rate was 4/145 (2.75%; ci: 0.1%-5.4%). the only risk factor significantly associated with transmission was a failure to use zidovudine intra-partum in 2 of the 4 mothers (50% versus 6.4% in non-transmitting mothers). a trend toward low cd4 and high viral load at entry, and rupture of membranes > 4 hours were associated with increased hiv transmission. conclusion: hiv vertical transmission in brazil was reduced to a level similar to other countries with the most effective prevention programs using a multidisciplinary team approach. a high level of compliance for use of anti-retroviral drugs, the provision of health education to mothers, and use of formula for all exposed infants.
Aquisi??o da linguagem escrita e interven??es pedagógicas: uma abordagem histórico-cultural
Tuleski, Silvana Calvo;Chaves, Marta;Barroco, Sonia Mari Shima;
Fractal : Revista de Psicologia , 2012, DOI: 10.1590/S1984-02922012000100003
Abstract: this text, whose nature is conceptual and metodological, seeks to present the acquisition of written language from the perspective of historical-cultural psychology and, taking heed of the ontogenetic scope, it discusses the implications of the pedagogical interventions from their assumptions. to get this objective, the nature and the development of higher psychological functions, of which the written language is part, are explained. then, it shows up as the acquisition of the written language happens according to luria and vigotski and, finally it presents the pedagogical mediations required for the teaching to promote learning and this, in turn, development.
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