GENETIC DIVERSITY OF Hymenaea courbaril L. IN THE MATO GROSSO AMAZON: IMPLICATIONS FOR CONSERVATION

Hymenaea courbaril L. (Fabaceae) is a tree species popularly known as 'jatobá'. Its wood is largely sold and its fruits are used as a food and medicinal resources. This species has been subjected to logging and habitat destruction. The knowledge about genetic polymorphism is important for the conservation of species affected by anthropic action. In this study, we analyzed the genetic diversity of natural populations of Hymenaea courbaril in the Mato Grosso Amazon. Seven microsatellite primers were used to genotyping of 43 individuals distributed in five populations in the north region of Mato Grosso State. All the seven primers were polymorphic, with 72 alleles detected, averaging 10.29 per locus. Expected and observed heterozygosities averaged 0.85 and 0.29 per locus, respectively. The fixation index was positive for all populations, suggesting excess homozygotes, probably due to inbreeding. Molecular analysis of variance revealed that 85.33% of genetic diversity is within the populations. Based on the UPGMA dendrogram, the individuals were divided into six groups. In the clustering provided by Structure software, four groups were formed which did not correspond to the geographic distribution of the individuals, indicating that the populations are not geographically structured. All sampled populations present elevated levels of genetic diversity, and so they can be used for conservation projects. Genetic variation is higher within the analyzed populations; therefore, several individuals must be conserved per population

Endotoxin exposure during sensitization to Blomia tropicalis allergens shifts TH2 immunity towards a TH17-mediated airway neutrophilic inflammation: role of TLR4 and TLR2

Experimental evidence and epidemiological studies indicate that exposure to endotoxin lipopolysaccharide (eLPS) or other TLR agonists prevent asthma. We have previously shown in the OVA-model of asthma that eLPS administration during alum-based allergen sensitization blocked the development of lung TH2 immune responses via MyD88 pathway and IL-12/IFN-γ axis. In the present work we determined the effect of eLPS exposure during sensitization to a natural airborne allergen extract derived from the house dust mite Blomia tropicalis (Bt). Mice were subcutaneously sensitized with Bt allergens co-adsorbed onto alum with or without eLPS and challenged twice intranasally with Bt. Cellular and molecular parameters of allergic lung inflammation were evaluated 24 h after the last Bt challenge. Exposure to eLPS but not to ultrapure LPS (upLPS) preparation during sensitization to Bt allergens decreased the influx of eosinophils and increased the influx of neutrophils to the airways. Inhibition of airway eosinophilia was not observed in IFN-γdeficient mice while airway neutrophilia was not observed in IL-17RA-deficient mice as well in mice lacking MyD88, CD14, TLR4 and, surprisingly, TLR2 molecules. Notably, exposure to a synthetic TLR2 agonist (PamCSK4) also induced airway neutrophilia that was dependent on TLR2 and TLR4 molecules. In the OVA model, exposure to eLPS or PamCSK4 suppressed OVA-induced airway inflammation. Our results suggest that B. tropicalis allergens engage TLR4 that potentiates TLR2 signaling. This dual TLR activation during sensitization results in airway neutrophilic inflammation associated with increased frequency of lung TH17 cells. Our work highlight the complex interplay between bacterial products, house dust mite allergens and TLR signaling in the induction of different phenotypes of airway inflammation.State of Sao Paulo Foundation for Research Support (FAPESP - 07/03031-3)State of Sao Paulo Foundation for Research Support (FAPESP - 11/17880-8)CAPES, Brazilian Council of Scientific and Technologic Developmen

A Relativistic Study of the Electronic and Magnetic Properties of Cerocene and Thorocene and Its Anions

In this study, we evaluated the importance of the relativistic effects on the optical and magnetic properties of cerocene and thorocene and its corresponding anions. The optimized molecular structures show <i>D</i>_8<i>h</i> symmetry for all systems, in good agreement with the experimental data. Atomic charges were analyzed using different approaches (Mulliken, AIM, multipole, and NBO), and the results suggest that the net charge on the thorium is greater than on the cerium atom; however, none of the methodologies were able to predict the expected net charge Ce­(III) and Th­(IV) atoms. However, by an energy decomposition analysis, a significant electrostatic, ionic, interaction, ∼58% and ∼61%, was found between the metal and the COT^2– rings, respectively. The calculated electronic excitations are underestimated in comparison with the experimental data, while the calculated EPR <i>g</i>-tensors are in agreement with previous theoretical and experimental data. Besides, the NICS analysis shows an increased ring electron delocalization due to the lanthanide and actinide metals

Representações e Atitudes em Sala de Aula quanto às Questões Étnico-Raciais: um estudo de caso

Com referência às questões étnico - raciais no contexto escolar, o presente trabalho estabeleceu como objetivos: a) compreender as representações do professor e alunos do Ensino Fundamental sobre as relações étnico - rac iais no contexto escolar; b) verificar o conhecimento que o professor possui acerca da Lei n° 10.369/2003 e dos conteúdos relativos à história e cultura africanas; c) analisar as representações do docente e dos discentes diante de uma situação de discrimin ação étnico - racial. O estudo apresenta a abordagem de pesquisa qualitativa do tipo descritivo. Foram participantes: 1 professora e 21 alunos do quinto ano do Ensino Fundamental. Utilizaram - se, como procedimento, entrevistas semiestruturadas e uma situação - problema seguida de perguntas referentes à mesma. Os resultados indicaram que há pouco conhecimento por parte do professor e dos alunos sobre a história da África. Quanto às questões étnico - raciais, a maioria dos alunos é capaz de identificar situações dis criminatórias e julgá - las como ruins

Liderazgo y satisfacción laboral en el contexto del Servicio Móvil de Atención de Emergencia

Objetivo: Analizar el Liderazgo Coaching ejercido por los coordinadores de enfermería en las unidades del Servicio de Atención Móvil de Urgencia, según la percepción de los coordinadores y técnicos de enfermería, y su correlación con tres variables sociodemográficas. Método: Se trata de un estudio descriptivo y analítico realizado con coordinadores y técnicos de enfermería de unidades de servicio prehospitalario, realizado con los cuestionarios de Liderazgo Coaching y el test de Spearman para el análisis de las correlaciones. Resultados: Participaron 11 coordinadores de enfermería y 155 técnicos. Se comprobó el ejercicio del Liderazgo Coaching en la percepción de dos categorías profesionales: “dar y recibir feedback”, dominio con promedio mayor para los coordinadores (21,45; DP=2,84); y “comunicación” (20,43; DP=5,57) para los técnicos. Además, en la autopercepción del Liderazgo Coaching de los coordinadores, se observó una correlación indirecta entre los dominios “dar y recibir feedback” (Spearman −0,720; p-valor 0,012) y “puntuación total de la escala” (Spearman −0,652 y p-valor 0,029) con relación al “tiempo de capacitación”. Conclusión: Los resultados de la investigación señalan la existencia de contribuciones significativas para las prácticas de enfermería y denotan el impacto de dicha competencia en el equipo de enfermería del servicio prehospitalario, en el ambiente de trabajo y en el cuidado prestado al paciente.Objective: To analyze the Coaching Leadership exercised by nursing coordinators in the Mobile Emergency Care Service units, in the coordinators and nursing technicians’ perception, in addition to its correlation with three sociodemographic variables. Method: Descriptive and analytical study carried out on nursing coordinators and nursing technicians from the pre-hospital care units, using the Coaching Leadership questionnaires and the Spearman correlation test to analyze the results. Results: 11 nursing coordinators and 155 nursing technicians participated in the study. The Coaching Leadership exercise was observed in the perception of two professional categories: “giving and receiving feedback”, which was the domain with the highest average for the coordinators (21.45; SD=2.84); and “communication” (20.43; SD=5.57) for technicians. Furthermore, in the coordinators’ self-perception of the Coaching Leadership, there was an indirect correlation between the domains “giving and receiving feedback” (Spearman −0.720; p-value 0.012) and “total scale score” (Spearman −0.652 and p-value 0.029) with regard to “training time”. Conclusion: The research results indicate significant contributions to nursing practices and denote this competence impact on the pre-hospital care nursing staff, in the work environment, and in the care provided to the patient.Objetivo: Analisar a Liderança Coaching exercida pelos coordenadores de enfermagem nas unidades do Serviço de Atendimento Móvel de Urgência, na percepção dos coordenadores e técnicos de enfermagem, além da sua correlação com três variáveis sociodemográficas. Método: Estudo descritivo e analítico realizado com coordenadores de enfermagem e técnicos de enfermagem das unidades do serviço pré-hospitalar, utilizando os questionários da Liderança Coaching e o teste de Spearman para análise das correlações. Resultados: Participaram 11 coordenadores de enfermagem e 155 técnicos de enfermagem. Verificou-se o exercício da Liderança Coaching na percepção de duas categorias profissionais: “dar e receber feedback”, que foi o domínio com maior média para os coordenadores (21,45; DP=2,84); e “comunicação” (20,43; DP=5,57) para os técnicos. Ademais, na autopercepção da Liderança Coaching dos coordenadores, evidenciou-se uma correlação indireta entre os domínios “dar e receber feedback” (Spearman −0,720; p-valor 0,012) e “escore total da escala” (Spearman −0,652 e p-valor 0,029) em relação ao “tempo de formação”. Conclusão: Os resultados da pesquisa sinalizam contribuições significativas para as práticas de enfermagem e denotam o impacto dessa competência na equipe de enfermagem do serviço pré-hospitalar, no ambiente de trabalho e no cuidado prestado ao paciente

Liderança e satisfação no trabalho no contexto do Serviço de Atendimento Móvel de Urgência

Objetivo: evaluar la correlación entre la práctica del Coaching de Liderazgo ejercida por los coordinadores de enfermería y la satisfacción laboral, en la autopercepción de los coordinadores y en la percepción de los técnicos de enfermería del Servicio Móvil de Atención de Emergencia. Método: estudio descriptivo y correlacional que utilizó el Cuestionario de Autopercepción del Enfermero en el Ejercicio de Liderazgo para medir la autopercepción de liderazgo de los once coordinadores de enfermería y el Cuestionario de Percepción de Técnico/ Asistente de Enfermería en el Ejercicio de Liderazgo para verificar la percepción de 155 técnicos. Por otra parte, el Job Satisfaction Survey evaluó la satisfacción laboral en ambas categorías. Las correlaciones entre los dominios de los instrumentos se determinaron mediante la prueba de Spearman (p&lt;0,05), y se analizó su poder de asociación. Resultados: El ejercicio de Coaching de Liderazgo se correlacionó con la satisfacción laboral (p-valor=0,001), tanto en la autopercepción de los coordinadores de enfermería, con una alta correlación (coeficiente de Spearman - 0,835), como en la percepción de los técnicos de enfermería, con asociación moderada (coeficiente de Spearman - 0,678). Conclusión: el Coaching de Liderazgo se correlacionó positivamente con la satisfacción en el trabajo, marcada por la confianza mutua, la interacción continua entre el líder (enfermero) y dirigidos (personal de enfermería) y la búsqueda de desarrollo profesional y personal.Objetivo: avaliar a correlação entre a prática de Liderança Coaching exercida pelos coordenadores de enfermagem e a satisfação no trabalho, na autopercepção dos coordenadores e na percepção dos técnicos de enfermagem do Serviço de Atendimento Móvel de Urgências. Método: estudo descritivo, correlacional, que utilizou o Questionário de Autopercepção do Enfermeiro no Exercício da Liderança para mensurar a autopercepção da liderança dos onze coordenadores de enfermagem e o Questionário de Percepção do Técnico/Auxiliar de Enfermagem no Exercício da Liderança para verificar a percepção dos 155 técnicos. Já o Job Satisfaction Survey avaliou a satisfação no trabalho de ambas as categorias. Foram determinadas as correlações entre os domínios dos instrumentos por intermédio do teste de Spearman (p&lt;0,05), sendo analisado o seu poder de associação. Resultados: o exercício da Liderança Coaching correlacionouse com a satisfação no trabalho (p-valor=0,001), tanto na autopercepção dos coordenadores de enfermagem, com alta correlação (coeficiente de Spearman - 0,835), quanto na percepção dos técnicos de enfermagem, com moderada associação, (coeficiente de Spearman - 0,678). Conclusão: a Liderança Coaching apresentou correlação positiva com a satisfação no trabalho, marcada pela confiança mútua, interação contínua entre líder (enfermeiro) e liderados (técnicos de enfermagem) e a busca do desenvolvimento profissional e pessoal.Objective: to evaluate the correlation between the practice of Coaching Leadership performed by nursing coordinators and job satisfaction, in the self-perception of coordinators and the perception of nursing technicians of the Mobile Emergency Care Service. Method: a descriptive, correlational study that used the Questionnaire on Self-Perception of the Nurse in the Exercise of Leadership to measure the self-perception of leadership of the eleven nursing coordinators and the Questionnaire on Nursing Technician Perception in the Exercise of Leadership to verify the perception of 155 nurse technicians. The Job Satisfaction Questionnaire assessed job satisfaction in both categories. Correlations among instrument domains were determined using the Spearman test (p&lt;0.05) and the association was analyzed. Results: the Coaching Leadership exercise correlated with job satisfaction (p-value=0.001), both in the self-perception of nursing coordinators, with high correlation (Spearman coefficient – (0.835), and in the perception of nursing technicians, with moderate association (Spearman coefficient - 0.678). Conclusion: coaching Leadership showed a positive correlation with job satisfaction, marked by mutual trust, continuous interaction between nurse and nursing technicians, and the pursuit of professional and personal development

Dual Emissions of Salicylidene-5-chloroaminepyridine Due to Excited State Intramolecular Proton Transfer: Dynamic Photophysical and Theoretical Studies

In this study, the photophysical properties of <i>N</i>-salycilidene-5-chloroaminopyridine were evaluated. This molecule presented dual emission from the keto* and enol* species, depending on the solvent used (DMSO or methanol in the absence and presence of trifluoroacetic acid). This molecule was synthesized through a dehydration reaction of salicylaldehyde under sonication and characterized using FTIR, cyclic voltammetry, mass spectrometry, and single-crystal X-ray diffraction, yielding the molecular structure. Theoretical calculations were performed under the DFT framework and its time-dependent counterpart. Our results suggest the occurrence of excited state proton transfer, ESIPT, in the aprotic solvent, leading to a keto*–enol* balance, which is confirmed by the emission bands observed at 425 and 545 nm, respectively. However, in a protic environment (methanol or DMSO with trifluoroacetic acid), only the enol form is emissive due to the hydrogen bonding between the iminic group and the solvent. Molecules with double emissions are potentially useful for white light emitting diodes

THE RELEVANCE OF NUTRITIONAL STATUS AND HISTOPATHOLOGICAL FINDINGS ON THE INFECTIOUS PROCESS OF BALB/C MICE INOCULATED WITH Lacazia loboi

O objetivo do estudo foi avaliar os efeitos da desnutrição protéico-calórica em camundongos isogênicos da linhagem BALB/c inoculados com Lacazia loboi, empregando parâmetros nutricionais e histopatológicos. Foram constituídos quatro grupos: G1- inoculados com restrição dietética; G2- não inoculados com restrição dietética; G3- inoculados sem restrição dietética; G4- não inoculados sem restrição dietética. Após instalada a desnutrição, os animais foram inoculados via intradérmica no coxim plantar e após quatro meses foram sacrificados para remoção do coxim plantar, fígado e baço. A infecção não exerceu grande influência no peso corporal dos camundongos. O peso do fígado e baço apresentou redução nos grupos desnutridos em comparação aos grupos nutridos. A lesão macroscópica, a viabilidade e o número total de fungos dos coxins plantares dos camundongos inoculados revelaram aumento no G3 quando comparado com o G1. Em relação à análise histopatológica dos coxins plantares observou-se aumento da celularidade global na composição do granuloma no G3 em relação ao G1, com grande número de macrófagos e células gigantes multinucleadas, discretos números de linfócitos estavam presentes em G3 e aumentados no G1. Os resultados sugerem que existe grande interação entre nutrição e doença de Jorge Lobo.The aim of this study was to evaluate the effects of the protein-calorie malnutrition in BALB/c isogenic mice infected with Lacazia loboi, employing nutritional and histopathological parameters. Four groups were composed: G1: inoculated with restricted diet, G2: not inoculated with restricted diet, G3: inoculated with regular diet, G4: not inoculated with regular diet. Once malnutrition had been imposed, the animals were inoculated intradermally in the footpad and after four months, were sacrificed for the excision of the footpad, liver and spleen. The infection did not exert great influence on the body weight of the mice. The weight of the liver and spleen showed reduction in the undernourished groups when compared to the nourished groups. The macroscopic lesions, viability index and total number of fungi found in the footpads of the infected mice were increased in G3 when compared to G1. Regarding the histopathological analysis of the footpad, a global cellularity increase in the composition of the granuloma was observed in G3 when compared to G1, with large numbers of macrophages and multinucleated giant cells, discrete numbers of lymphocytes were present in G3 and an increase was observed in G1. The results suggest that there is considerable interaction between Jorge Lobo's disease and nutrition

Photoacidity as a tool to rationalize excited state intramolecular proton transfer reactivity in flavonols

CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOCAPES - COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIORFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOThis work presents the determination of acidic strengths at the electronic ground and excited states (pKa and pK* a) of three flavonol derivatives using electronic absorption and fluorescence emission spectroscopy. The differences of the pKa and pK* a val17231238CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOCAPES - COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIORFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOCNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOCAPES - COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIORFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOsem informaçãosem informação2013/16245-2Authors are thankful for financial support and scholarships from the Brazilian agencies CNPq, CAPES, FAPESP (grant 2013/16245-2), the INEO (MCT/CNPq/FAPESP) and UNICAMP/FAEPEX. This research was supported in part by PLGrid infrastructur