Socialização organizacional como um fenômeno humano social: uma contribuição ao debate

Este ensaio teve por objetivo oferecer uma reflexão sobre a socialização organizacional, problematizando-a, com a defesa de que ela se apresenta como um fenômeno complexo e multifacetado, possibilitando múltiplos níveis de análise. Por meio de pesquisa bibliográfica foram reunidas publicações cujos textos selecionados representam relevante aporte teórico e conceitual para subsidiar este argumento. Com isso, foram realizados esclarecimentos conceituais, expressos agrupamentos de estudos que demonstram distintos interesses intelectuais para pesquisas e apresentada um nova síntese a partir destes agrupamentos. Por meio das reflexões efetuadas em uma interlocução crítica com os textos utilizados, neste ensaio foi possível aprofundar o entendimento sobre a socialização organizacional. Conclui-se que ela possui conceituação abrangente e, como um processo, é heterogênea e inacabada, individual e coletiva, formal, mas também informal, gerando resultados nem sempre previsíveis. Foram apontadas quatro categorias centrais para as análises quais sejam: indivíduo;  organização; indivíduo e organização;  indivíduo, organização e o contexto extraorganizacional. A socialização organizacional foi revelada como um fenômeno humano social e que comporta perspectivas mais integradoras para os estudos, com o intuito de que a sua complexidade, dinâmicas e especificidades sejam mais bem apreendidas e situadas.

Bioactivity of Piper extracts on Tuta absoluta (Lepidoptera: Gelechiidae) in tomato

Abstract -The objective of this work was to evaluate the bioactivity of ethanolic leaf extracts from four species of the genus Piper against the tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) under laboratory conditions. The evaluated species were: P. amalago var. medium, P. glabratum, P. mikanianum, and P. mollicomum. In the initial screening assay (extract concentration of 2,000 mg L -1 ), all tested extracts caused significant larval mortality, particularly the extract of P. amalago var. medium; however, no extracts reduced the weight of the surviving larvae. The extract from P. amalago var. medium at the concentration of 1,011 mg L -1 caused a significant lengthening of the larval and pupal stages. The ethanolic leaf extract of P. amalago var. medium is promising for the control of T. absoluta larvae in tomato, since it exhibits acute toxicity toward these caterpillars at the concentration of 2,000 mg L -1 and affects the insect's development by reducing its survival and lengthening the larval and pupal stages

CONTRIBUIÇÕES DA ABORDAGEM SOCIOCONSTRUCIONISTA PARA A COMPREENSÃO DA ESTRATÉGIA COMO PRÁTICA SOCIAL / CONTRIBUTIONS OF THE SOCIOCONTRUCTIONIST APPROACH TO THE UNDERSTANDING OF STRATEGY AS A SOCIAL PRACTICE

Baseado em uma revisão crítica da literatura, indicamos como o construcionismo social fornece importantes contribuições para a compreensão e a identificação dos processos sociais que permeiam as relações das pessoas nas instituições e/ou entre instituições. Apresentamos algumas considerações sobre as principais contribuições da abordagem socioconstrucionista (construcionismo social) para a compreensão da Estratégia como Prática Social. Percebemos, como principais resultados, que a literatura referente ao tema da Estratégia como Prática Social, em geral, concentra-se em questões como conceituação e contextualização da prática social, no entanto, a literatura ainda carece de relatos detalhados sobre as reais possibilidades de análise e intervenção nas situações do contexto organizacional. O debate aqui proposto é primordial para a elaboração de estratégias organizacionais que possibilitem a compreensão da realidade organizacional de forma contextualizada, o que permitiria melhores intervenções na esfera organizacional. Palavras-chave: Estratégia como Prática Social. Construcionismo social. Estratégias organizacionais. Teoria organizacional. Revisão de literatura. Abstract Based on a critical literature review, we indicate how social constructionism provides important contributions for understanding and identifying social processes that permeate the relationships of people in institutions and/or between institutions. We present some considerations about the main contributions of the socio-constructionist approach (social constructionism) for understanding the Strategy as Social Practice. As main results, we perceive that the literature on the theme of Strategy as a Social Practice generally focuses on issues such as defining and contextualizing social practice; however, the literature still lacks detailed reports about the real possibilities of analysis and intervention in situations of organizational context. The debate proposed here is vital to the development of organizational strategies that facilitate understanding of organizational reality in contextualized form, which would allow better interventions in the organizational sphere. Keywords: Strategy as Social Practice. Social constructionism. Organizational strategies. Organizational theory. Literature review

Warifteine therapeutic treatment reduced leukocyte recruitment and anxiety-like response in ovalbumin-induced allergic pulmonary inflammation / Tratamento terapêutico com warifteína reduz recrutamento de leucócitos e resposta semelhante á ansiedade na inflamação pulmonar alérgica induzida por ovalbumina

Pulmonary inflammation plays a fundamental role in the pathophysiology of allergic asthma, which is characterized by lower airway obstruction, bronchial hyperresponsiveness, tissue remodeling, recruitment of inflammatory cells, with a predominance of eosinophils, in addition to behavioral disorders such as anxiety. The aim of this study was to evaluate the therapeutic effect of the alkaloid warifteine, from the medicinal plant Cissampelos sympodialis, on anxiety-like behavior, respiratory frequency and leukocyte recruitment in an experimental model of allergic pulmonary inflammation. Swiss female mice were sensitized and challenged with ovalbumin (OVA) throughout the experimental protocol. The animals were treated orally with warifteine (2 mg / kg), subcutaneously with dexamethasone (2 mg / kg) or intraperitoneally with diazepam (1 mg / kg), 1 h after the OVA-challenges. On the last day of the antigenic challenge, the mice were tested for behavior using the Elevated Plus Maze (EPM) and for respiratory rate using full body plethysmography. The following day, the mice were euthanized to collect the bronchoalveolar lavage fluid (BALF) and leukocyte count. The data obtained showed that OVA-sensitization induced a behavior similar to anxiety in mice since the EPM test showed that the OVA group increased the number of entries and the time spent in the closed arms (CA) of the apparatus and reduced these parameters in the open arms (OA) compared to the Salina group. Warifteine treatment reversed both parameters analyzed, increasing the time spent (p <0.0001) and number of entries (p <0.01) in OA, decreasing the time spent (p <0.01) and number of entries (p <0.0001) in the CA, similarly to dexamethasone and diazepam standard drugs. Warifteine also reduced the respiratory rate (p <0.01) compared to the OVA group. The behavioral and breathing changes of the tested animals showed a relationship with the increase in the total and differential inflammatory leukocyte number in the OVA group compared to the Saline group. Therapeutic treatment with warifteine decreased the inflammatory process, reducing the number of total cells (p <0.0001) dependent of eosinophils and neutrophils numbers (p <0.001), as well as the percentage of eosinophils (p <0.0001). These data show that therapeutic treatment with warifteine is able to inhibit anxiety-like behavior and respiratory rate, due to a mechanism related to the inhibition of eosinophilic migration in an experimental model of allergic pulmonary inflammation.Pulmonary inflammation plays a fundamental role in the pathophysiology of allergic asthma, which is characterized by lower airway obstruction, bronchial hyperresponsiveness, tissue remodeling, recruitment of inflammatory cells, with a predominance of eosinophils, in addition to behavioral disorders such as anxiety. The aim of this study was to evaluate the therapeutic effect of the alkaloid warifteine, from the medicinal plant Cissampelos sympodialis, on anxiety-like behavior, respiratory frequency and leukocyte recruitment in an experimental model of allergic pulmonary inflammation. Swiss female mice were sensitized and challenged with ovalbumin (OVA) throughout the experimental protocol. The animals were treated orally with warifteine (2 mg / kg), subcutaneously with dexamethasone (2 mg / kg) or intraperitoneally with diazepam (1 mg / kg), 1 h after the OVA-challenges. On the last day of the antigenic challenge, the mice were tested for behavior using the Elevated Plus Maze (EPM) and for respiratory rate using full body plethysmography. The following day, the mice were euthanized to collect the bronchoalveolar lavage fluid (BALF) and leukocyte count. The data obtained showed that OVA-sensitization induced a behavior similar to anxiety in mice since the EPM test showed that the OVA group increased the number of entries and the time spent in the closed arms (CA) of the apparatus and reduced these parameters in the open arms (OA) compared to the Salina group. Warifteine treatment reversed both parameters analyzed, increasing the time spent (p <0.0001) and number of entries (p <0.01) in OA, decreasing the time spent (p <0.01) and number of entries (p <0.0001) in the CA, similarly to dexamethasone and diazepam standard drugs. Warifteine also reduced the respiratory rate (p <0.01) compared to the OVA group. The behavioral and breathing changes of the tested animals showed a relationship with the increase in the total and differential inflammatory leukocyte number in the OVA group compared to the Saline group. Therapeutic treatment with warifteine decreased the inflammatory process, reducing the number of total cells (p <0.0001) dependent of eosinophils and neutrophils numbers (p <0.001), as well as the percentage of eosinophils (p <0.0001). These data show that therapeutic treatment with warifteine is able to inhibit anxiety-like behavior and respiratory rate, due to a mechanism related to the inhibition of eosinophilic migration in an experimental model of allergic pulmonary inflammation

Subclavian Access for Transcatheter CoreValve® Aortic Prosthesis Implantation: Data from the Brazilian Registry

ABSTRACTBackgroundTransfemoral access is the preferred approach for transcatheter aortic valve implantation. However, some situations, such as the presence of peripheral vascular disease, preclude the use of such access. In these cases, subclavian access is an alternative approach for this procedure. This study aimed at evaluating the Brazilian experience using the subclavian approach for transcatheter CoreValve® prosthesis implantation.MethodsAortic valve area<1cm2, aortic valve ring≥20mm and≤27mm (26mm and 29mm CoreValve®), ascending aorta≤43mm and subclavian artery with a diameter≥6mm, without significant obstructive lesions, marked tortuosity and excess calcification were requisites for the procedure. The access through the subclavian artery was obtained by surgical dissection and, under direct vision, a subclavian artery puncture was performed. Once artery access was obtained, the standard technique was used.ResultsBetween January 2008 and April 2012, 8 patients with peripheral vascular disease underwent CoreValve® prosthesis implantation through the subclavian artery in 4 institutions. The procedure was successful in all cases with reduction of the mean transvalvular pressure gradient from 46.4±17.5mmHg to 9.3±3.6mmHg (P=0.0018) and improvement of symptoms. At 30 days and after 275±231 days of follow-up, 87.5% and 62.5% of the patients, respectively, were free from major adverse events (death, myocardial infarction, stroke and urgent cardiac suregery).ConclusionsIn the Brazilian experience, the subclavian access was a safe and effective alternative for transcatheter CoreValve® implantation

Venenos e toxinas ofídicas purificadas como ferramenta biotecnológica para o controle de Ralstonia solanacearum

The objective of this work was to evaluate the in vitro antibacterial activity of snake venoms and purified toxins on the phytopathogenic bacterium Ralstonia solanacearum. The evaluations were performed with 17 crude venoms (13 from Bothrops, 3 from Crotalus, and 1 from Lachesis) and seven toxins (1 from Bothrops and 6 from Crotalus). Antibacterial activity was assessed in MB1 medium containing solubilized treatments (1 μL mL‑1). A total of 100 μL bacterial suspension (8.4 x 109 CFU mL-1) was used. After incubation at 28°C, the number of bacterial colonies at 24, 48, and 72 hours after inoculation was evaluated. SDS-PAGE gel at 15% was used to analyze the protein patterns of the samples, using 5 μg protein of each sample in the assay. Furthermore, the minimum inhibitory concentration (MIC) and lethal concentration (LC50) values were determined by the Probit method. Venoms and toxins were able to reduce more than 90% of R. solanacearum growth. These results were either equivalent to those of the positive control chloramphenicol or even better. While MIC values ranged from 4.0 to 271.5 µg mL-1, LC50 ranged from 28.5 µg mL-1 to 4.38 mg mL-1. Ten crude venoms (7 from Bothrops and 3 from Crotalus) and two purified toxins (gyroxin and crotamine) are promising approaches to control the phytopathogenic bacterium R. solanacearum.O objetivo deste trabalho foi avaliar a atividade antibacteriana in vitro de venenos e toxinas purificadas de serpentes sobre a bactéria fitopatogênica Ralstonia solanacearum. As avaliações foram realizadas em 17 venenos brutos (13 de Bothrops, 3 de Crotalus e 1 de Lachesis) e sete toxinas (1 de Bothrops e 6 de Crotalus). A atividade antibacteriana foi avaliada em meio MB1 que continha os tratamentos solubilizados (1 μL mL-1). Utilizou-se o total de 100 μL de suspensão bacteriana (8,4 x 109 UFC mL-1). Após incubação a 28°C, avaliou-se o número de colônias bacterianas às 24, 48 e 72 horas após a inoculação. O gel SDS-PAGE a 15% foi usado para analisar o perfil proteico das amostras, tendo-se utilizado 5 μg de proteína no ensaio. Além disso, os valores de concentração inibitória mínima (CIM) e concentração letal (CL50) foram determinados pelo método Probit. Os venenos e as toxinas foram capazes de reduzir mais de 90% do crescimento de R. solanacearum. Esses resultados foram ou equivalentes aos do controle positivo cloranfenicol ou até melhores. Enquanto os valores de CIM variaram de 4,0 a 271,5 µg mL-1, a CL50 variou de 28,5 µg mL-1 a 4,38 mg mL-1. Dez venenos brutos (7 de Bothrops e 3 de Crotalus) e duas toxinas (giroxina e crotamina) são abordagens promissoras para o controle da bactéria fitopatogênica R. solanacearum

Soroprevalência de anticorpos do vírus SARS-CoV-2 em escolares no município de São Paulo, 2020

OBJECTIVE: To estimate seroprevalence of SARS-CoV-2 antibodies in schoolchildren aged 4 to 14 years living in the city of São Paulo, according to clinical, demographic, epidemiological, and social variables, during the school closure period as a measure against covid-19 spread. METHODS: A serological survey was made in September 2020 with a random sample stratified by school system (municipal public, state public and private) type. A venous blood sample was collected using the Wondfo SARS-CoV-2 Antibody Test (lateral flow method) for detection of total SARS-CoV-2 virus antibodies. Semi-structured questionnaires were applied to collect clinical, demographic, social, and epidemiological data. RESULTS: Seroprevalence of SARS-CoV-2 antibodies in schoolchildren was of 16.6% (95%CI 15.4–17.8). The study found higher seroprevalence in the municipal (18.5%; 95%CI 16.6–20.6) and state (16.2%; 95%CI 14.4–18.2) public school systems compared to the private school system (11.7; 95%CI 10.0–13.7), among black and brown students (18.4%; 95%CI 16.8–20.2) and in the most vulnerable social stratum (18.5 %;95%CI 16.9–20.2). Lower seroprevalence was identified in schoolchildren who reported following the recommended protective measures against covid-19. CONCLUSION: Seroprevalence of SARS-CoV-2 antibodies is found mainly in the most socially vulnerable schoolchildren. This study can contribute to support public policies that reinforce the importance of suspending face-to-face classes and developing strategies aimed at protective measures and monitoring of the serological status of those who have not yet been included in the vaccination schedule.OBJETIVO: Estimar a soroprevalência de anticorpos do vírus SARS-CoV-2 em escolares de quatro a 14 anos de idade residentes no município de São Paulo, segundo variáveis clínicas, demográficas, epidemiológicas e sociais, durante o período de fechamento das escolas como medida de controle da covid-19. MÉTODOS: Realizou-se um inquérito sorológico em setembro de 2020 com amostra aleatória estratificada por tipo de rede de ensino (pública municipal, pública estadual e privada). Foi coletada amostra de sangue venoso utilizando-se o teste de imunoensaio de fluxo lateral da fabricante Wondfo para detecção de anticorpos totais contra o vírus SARS-CoV-2. Aplicaram-se questionários semiestruturados para o levantamento de dados clínicos, demográficos, sociais e epidemiológicos. RESULTADOS: A soroprevalência de anticorpos do vírus SARS-CoV-2 em escolares foi de 16,6% (IC95% 15,4–17,8). O estudo encontrou soroprevalências mais elevadas na rede pública municipal (18,5%; IC95% 16,6–20,6) e estadual (16,2%; IC95% 14,4–18,2) em relação à rede privada (11,7; IC95% 10,0–13,7) e entre escolares da raça/cor preta e parda (18,4%; IC95% 16,8–20,2) e no estrato social mais vulnerável (18,5%; IC95% 16,9–20,2). A pesquisa identificou menores soroprevalências nos escolares que relataram seguir as medidas recomendadas de proteção contra a covid-19. CONCLUSÃO: A soroprevalência de anticorpos contra o vírus SARS-CoV-2 atinge principalmente os escolares socialmente mais vulneráveis. Este estudo pode contribuir para embasar políticas públicas que reforcem a importância da suspensão das aulas presenciais e da necessidade de estratégias de medidas de proteção e acompanhamento do status sorológico daqueles que ainda não foram contemplados no calendário vacinal

Avaliação da eficácia da psicoterapia on-line versus presencial no tratamento de transtornos de humor

Na intricada teia dos transtornos do humor, onde milhões enfrentam desafios globais, a depressão e o transtorno bipolar se destacam, demandando compreensão profunda e estratégias personalizadas. A persistente tristeza e os episódios extremos de humor, permeados por fatores externos, tornam o diagnóstico e tratamento essenciais, reverberando não só no indivíduo, mas nas redes sociais. Psicoterapia, presencial ou on-line, emerge como um componente crucial, oferecendo um espaço seguro e conveniência. Trata-se de uma pesquisa cujo estudo foi objetivo avaliar a avaliação da eficácia das psicoterapias on-line e presencial no tratamento de transtornos de humor. Para isso, se realizou uma revisão sistemática de literatura utilizando as bases de dados Medical Literature Analysis and Retrieval System On-line (MEDLINE), Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS) e Scientific Electronic Library On-line (SCIELO). Após análise e interpretação qualitativa dos resultados, concluiu-se que a psicoterapia on-line, especialmente a Terapia Cognitivo-Comportamental online (eTCC), apresentou maior eficácia no tratamento de transtornos de humor, enfatizando a ansiedade, em comparação com abordagens presenciais. A evidência consistente de uma redução nos sintomas ansiosos em diversos grupos de pacientes e condições clínicas ressaltou os benefícios dessa modalidade, incluindo a redução de custos sociais e econômicos, maior alcance clínico e melhorias globais nos sintomas