1,622 research outputs found
UNIVERSIDADE E COMPROMISSO SOCIAL: FACULDADE MUNICIPAL DE PALHOÇA (FMP) UM MARCO NA EDUCAÇAO SUPERIOR MUNICIPAL, PÚBLICA E GRATUITA.
Entendendo a relevância do compromisso social de uma instituição de ensino superior municipal este artigo objetiva relatar a importância de uma faculdade municipal para o desenvolvimento de um município. O artigo foi elaborado partindo-se de dados coletados, utilizando-se de pesquisa documental, observação participante e a utilização de questionário para coletar as informações necessárias, o questionário foi aplicado com os estudantes ingressantes nos anos de 2009, 2010 e 2011. No entanto, identificou-se o perfil dos acadêmicos que estudam na FMP são oriundos em sua maioria das escolas públicas que escolheram a Faculdade Municipal de Palhoça para fazer seu curso superior por ser uma instituição de referencia em ensino superior municipal. Concluiu-se que a importância da FMP para o município de Palhoça é imprescindível, pois a faculdade mobilizou a vida econômica, social e cultural do município e atualmente é indiscutível o seu papel no desenvolvimento local
Division of labour and risk taking in the dinosaur ant, Dinoponera quadriceps
The success of social insects can be largely attributed to division of labour. In contrast to most social insects, many species with simple societies contain workers which are capable of sexual reproduction. Headed by one or a few reproductive individuals, subordinate workers form a dominance hierarchy, queuing to attain the reproductive role. In these species task allocation may be influenced by individual choice based on future reproductive prospects. Individuals with a better chance of inheriting the colony may be less likely to take risks and high-ranking workers that spend a greater amount of time in proximity to the brood may be able to increase the ability to police egg-laying by cheating subordinates. We investigated division of labour and risk taking in relation to dominance rank in the queenless ponerine ant, Dinoponera quadriceps, a species with relatively simple societies. Using behavioural observations, we show that high-ranking workers spend more time performing egg care, less time foraging and are less likely to defend the nest against attack. High-rankers also spent a greater amount of time guarding and inspecting eggs, behaviours which are likely to improve detection of egg laying by cheating subordinates. We also show that high-ranking workers spend a greater amount of time idle, which may help increase lifespan by reducing energy expenditure. Our results suggest that both risk-taking and egg-care behaviours are related to future reproductive prospects in D. quadriceps. This highlights a mechanism by which effective division of labour could have been achieved during the early stages of eusocial evolution
Appetite for self-destruction: suicidal biting as a nest defense strategy in Trigona stingless bees
Self-sacrificial behavior represents an extreme and relatively uncommon form of altruism in worker insects. It can occur, however, when inclusive fitness benefits are high, such as when defending the nest. We studied nest defense behaviors in stingless bees, which live in eusocial colonies subject to predation. We introduced a target flag to nest entrances to elicit defensive responses and quantified four measures of defensivity in 12 stingless bee species in São Paulo State, Brazil. These included three Trigona species, which are locally known for their aggression. Species varied significantly in their attack probability (cross species range = 0–1, P < 0.001), attack latency (7.0–23.5 s, P = 0.002), biting duration of individual bees (3.5–508.7 s, P < 0.001), and number of attackers (1.0–10.8, P < 0.001). A “suicide” bioassay on the six most aggressive species determined the proportion of workers willing to suffer fatal damage rather than disengage from an intruder. All six species had at least some suicidal individuals (7–83 %, P < 0.001), reaching 83 % in Trigona hyalinata. Biting pain was positively correlated with an index of overall aggression (P = 0.002). Microscopic examination revealed that all three Trigona species had five sharp teeth per mandible, a possible defensive adaptation and cause of increased pain. Suicidal defense via biting is a new example of self-sacrificial altruism and has both parallels and differences with other self-sacrificial worker insects, such as the honey bee. Our results indicate that suicidal biting may be a widespread defense strategy in stingless bees, but it is not universal
UNIVERSIDADE E COMPROMISSO SOCIAL: O IMPACTO CULTURAL, ECONOMICO E SOCIAL PROMOVIDO PELA FACULDADE MUNICIPAL DE PALHOÇA.
Este artigo tem como objetivo identificar o impacto social, econômico e cultural que a Faculdade Municipal de Palhoça provoca no município. Para fundamentar o tema realizou-se a revisão de literatura com base em autores clássicos e contemporâneos contemplando o tema administração universitária. Foi desenvolvida uma pesquisa documental com base em documentos internos da FMP. Utilizou-se do método de pesquisa bibliográfica, exploratória e descritiva e analise qualitativa. Concluiu-se que o impacto social, econômico e cultural da Faculdade Municipal de Palhoça é notório, fundamentado nas características e vocação da instituição que atua diretamente na comunidade com projetos extensionistas, e um modelo de gestão empreendedora com foco em atender as necessidades do município, desenvolve seus projetos de cursos de graduação e pós graduação com foco no desenvolvimento local. A FMP faz parte da cidade de Palhoça
GESTÃO EMPREENDEDORA: A CARREIRA DE MULHERES NA GESTÃO EM INSTITUIÇÕES DE ENSINO SUPERIOR NO ESTADO DE SANTA CATARINA.
Este artigo tem como objetivo analisar o perfil de mulheres em cargos de gestão em instituições de ensino superior no estado de Santa Catarina. Para fundamentar o tema realizou-se a revisão de literatura com base em autores clássicos e contemporâneos contemplando o tem empreendedorismo, mulher e mercado, gestão e instituições de ensino superior. Foi desenvolvido um questionário contendo 14 questões fechadas que foram aplicadas com uma amostra de 14 mulheres gestoras de instituições de ensino superior em cargos de direção geral ou reitoras, as quais foram aplicadas no período de 04 de agosto a 01 de setembro de 2012. Utilizou-se do método de pesquisa bibliográfica, exploratória e descritiva e a analise qualitativa e quantitativa. Concluiu-se que o perfil das mulheres em cargo de gestão é fundamentado em características como intuição, sensibilidade, flexibilidade e criatividade, adotam o modelo de gestão descentralizado, optando pela gestão participativa. O viés empreendedor encontram-se arraiado ao perfil das gestoras. Os estudos está diretamente vinculada as oportunidades na carreira, e todas encontram-se muito orgulhosas da carreira
Polyamine, peroxidase activity and total protein content during storage of bird-of-paradise
The present study was aimed to the determination of the effect of storage on some biochemical characteristics (PAs content, POX activity and total protein content) of flower tissue of bird-of-paradise. Flowers were selected and labeled, avoiding any mechanical damage, and randomly distributed in recipients for two postharvest trials. In the first experiment, flowers were placed in recipients containing tap water and stored in a cold room, at 7.5 \ubaC and 90 % RH, for a period of 12 days. In experiment 2, flowers were stored in room temperature for a period of 6 days. For biochemical characteristics, samples (sepals, petals, stems and bracts) from experiment 1 were collected at 0, 4, 8 and 12 days, and at 0, 2, 4 and 6 days for experiment 2. Results showed that flower bracts, stored at 7.5 \ub0C, presented a lower content of PAs (Put and Spd), when compared to samples stored at room temperature. In both experiments, a high content of PAs (Spm) was observed in flower tissues in relation to Put and Spd. An increase of POX activity was observed in sepals stored in the cold, and was related to PAs degradation during senescence. No differences in total protein content were observed between the two treatments. The present study provides numeric results on changes in level of PAs, POX activity and total protein during postharvest of bird-of-paradise
Evaluation of socket healing in patients undergoing bisphosphonate therapy: experience of a single Institution
Objective: To assess the clinical features of exodontias performed in cancer patients who have been receiving
intravenous bisphosphonates (BPs).
Study Design: This is a retrospective cohort study using a sample of 20 patients receiving BPs who had 62 teeth
extracted. An univariate analysis was applied to calculate socket healing time (HT), comparing among exodontias
performed according to cause, such as periodontal disease or caries, type of BP, and use of corticosteroid. In order
to analyze the influence of each variable on HT, multiple statistical analyses were performed through logistic
multiple regression.
Results: From the 62 tooth extractions performed, 5 exodontias had evolved to 4 sites of bisphosphonate-related
osteonecrosis of the jaws (BOJ). Of another 57 exodontias without development of BOJ, HT was significantly
better for tooth extraction performed in patients receiving corticosteroid (p= .01), for tooth extracted due to caries
(p= .04), and for extractions under pamidronate (p= .03). Sockets after exodontias due to periodontal diseases
had OR= 5.22 (95% CI 1.73-133.66, p=0.01) for delayed HT, exodontias performed under corticosteroid use had
OR=0.04 (95% CI 0.01-0.40, p<0.001), and exodontias performed under zoledronate had OR=0.31 (95% CI 0.08-
1.25, p=0.10).
Conclusions: Exodontias performed in patients under BP therapy had a low rate of BOJ occurrence. Zoledronate
and periodontal diseases influence delayed socket healing. Adjuvant antibiotics could be relevant procedures
aimed at reducing the risk of BOJ development
The Involvement of Proteoglycans in the Human Plasma Prekallikrein Interaction with the Cell Surface
Introduction: the aim of this work was to evaluate the role of human plasma prekallikrein assembly and processing in cells and to determine whether proteoglycans, along with high molecular weight kininogen (H-kininogen), influence this interaction.Methods: We used the endothelial cell line ECV304 and the epithelial cell lines CHO-K1 (wild type) and CHO-745 (deficient in proteoglycans). Prekallikrein endocytosis was studied using confocal microscopy, and prekallikrein cleavage/activation was determined by immunoblotting using an antibody directed to the prekallikrein sequence C364TTKTSTR371 and an antibody directed to the entire H-kininogen molecule.Results: At 37 degrees C, prekallikrein endocytosis was assessed in the absence and presence of exogenously applied H-kininogen and found to be 1,418.4 +/- 0.010 and 1,070.3 +/- 0.001 pixels/cell, respectively, for ECV304 and 1,319.1 +/- 0.003 and 631.3 +/- 0.001 pixels/cell, respectively, for CHO-K1. No prekallikrein internalization was observed in CHO-745 in either condition. Prekallikrein colocalized with LysoTracker in the absence and presence of exogenous H-kininogen at levels of 76.0% and 88.5%, respectively, for ECV304 and at levels of 40.7% and 57.0%, respectively, for CHO-K1. After assembly on the cell surface, a plasma kallikrein fragment of 53 kDa was predominant in the incubation buffer of all the cell lines studied, indicating specific proteolysis; plasma kallikrein fragments of 48-44 kDa and 34-32 kDa were also detected in the incubation buffer, indicating non-specific cleavage. Bradykinin free H-kininogen internalization was not detected in CHO-K1 or CHO-745 cells at 37 degrees C.Conclusion: the prekallikrein interaction with the cell surface is temperature-dependent and independent of exogenously applied H-kininogen, which results in prekallikrein endocytosis promoted by proteoglycans. Prekallikrein proteolysis/activation is influenced by H-kininogen/glycosaminoglycans assembly and controls plasma kallikrein activity.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundacao de Apoio a Universidade Federal de São Paulo-FAP/UNIFESPUniversidade Federal de São Paulo, Escola Paulista Med, Dept Bioquim, São Paulo, BrazilUniv Bandeirante São Paulo, Biomat & Biotechnol Res Grp, São Paulo, BrazilUniversidade Federal de São Paulo, Escola Paulista Med, Dept Bioquim, São Paulo, BrazilFAPESP: FAPESP 09/51319-1FAPESP: 09/13160-0FAPESP: FAPESP 13/05822-9FAPESP: FAPESP 2012/50219-6CNPq: CNPq 472403/2007-9Web of Scienc
Gum Guar fiber associated with fructose reduces serum triacylglycerol but did not improve the glucose tolerance in rats
Abstract
Introduction
The increased intake of dietary fructose can be associated with alterations on energy homeostasis and lipid/carbohydrate metabolism, such as insulin resistance and dislipidemia. On the other hand, the ingestion of soluble fiber gum guar could improve benefic mechanism on glucose tolerance and lipids profile.
Objective
The aim of the present study were to investigate the effects of the supplemental feeding partially hydrolyzed gum guar on glucose and lipid homeostasis, in rats fed with fructose solution.
Methods
The study was performed on thirty day-old male Wistar rats randomly assigned into four groups: control(C) or treated with fructose (F-20%), fiber (FB-5%), or fructose plus fiber (F-20% + FB-5% = FF) solution for 30 days on glucose tolerance (OGTT), triacylglycerol concentration in the liver by chloroform/methanol method, glucose, triacylglycerol and total cholesterol serum concentration by assayed by enzymatic colorimetric method, insulin receptor (IR) concentration in the liver by Western Blotting.
Results
The total body weight gain was not different between groups; in regards of total caloric intake, in the F group was significantly higher and in the FB group was lower than other groups. The triacylglycerol concentration in the liver of FF group was significantly higher than F group, the triacylglycerol concentration in the serum was higher the F group compared with other groups. The OGTT reveal impaired on glucose tolerance in the F, FB, FF compared with C. The IR concentration in the liver was lower in the F, FB, FF compared with C, no significant difference was observed between groups for IR concentration in the gastrocnemius muscle. No significant difference was observed between groups for carcass fat content and serum total cholesterol.
Conclusion
Fructose induced important alterations on glucose tolerance and lipid metabolism, despite of fiber showed reversion of part this alterations. The association fructose plus fiber to seem decrease insulin receptor concentration in the liver, with consequent impair on glucose tolerance.
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Ferricytochrome c Directly Oxidizes Aminoacetone to Methylglyoxal, a Catabolite Accumulated in Carbonyl Stress
Age-related diseases are associated with increased production of reactive oxygen and carbonyl species such as methylglyoxal. Aminoacetone, a putative threonine catabolite, is reportedly known to undergo metal-catalyzed oxidation to methylglyoxal, NH4+ ion, and H2O2 coupled with (i) permeabilization of rat liver mitochondria, and (ii) apoptosis of insulin-producing cells. Oxidation of aminoacetone to methylglyoxal is now shown to be accelerated by ferricytochrome c, a reaction initiated by one-electron reduction of ferricytochrome c by aminoacetone without amino acid modifications. the participation of O-2(center dot-) and HO center dot radical intermediates is demonstrated by the inhibitory effect of added superoxide dismutase and Electron Paramagnetic Resonance spin-trapping experiments with 5,5'-dimethyl-1-pyrroline-N-oxide. We hypothesize that two consecutive one-electron transfers from aminoacetone (E-0 values = -0.51 and -1.0 V) to ferricytochrome c (E-0 = 0.26 V) may lead to aminoacetone enoyl radical and, subsequently, imine aminoacetone, whose hydrolysis yields methylglyoxal and NH4+ ion. in the presence of oxygen, aminoacetone enoyl and O-2(center dot-) radicals propagate aminoacetone oxidation to methylglyoxal and H2O2. These data endorse the hypothesis that aminoacetone, putatively accumulated in diabetes, may directly reduce ferricyt c yielding methylglyoxal and free radicals, thereby triggering redox imbalance and adverse mitochondrial responses.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)INCT Processos Redox em Biomedicina (Brazil)Univ São Paulo, Dept Bioquim, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Bioquim & Biol Mol, São Paulo, BrazilUniversidade Federal de São Paulo, Inst Ciencias Ambientais Quim & Farmaceut, São Paulo, BrazilUniv São Paulo, Dept Fis & Informat, São Paulo, BrazilUniv Fed ABC, Ctr Ciencias Nat & Humanas, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Bioquim & Biol Mol, São Paulo, BrazilUniversidade Federal de São Paulo, Inst Ciencias Ambientais Quim & Farmaceut, São Paulo, BrazilWeb of Scienc
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