1,997 research outputs found

    Implant Site Nexplanon Reaction?

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    Nexplanon (Schering-Plough Limited/Merck Sharp & Dohme Limited (MSD)) is a long active reversible contraceptive method that provides effective contraception for 3 years. It consists of a single, flexible, rod-shaped implant, containing 68 mg etonogestrel. It is 4 cm long, consists of an ethylene vinyl acetate copolymer, a non-absorbable material, and also contains 15 mg of barium sulfate, which makes it visible by X-ray. We describe a case of a 39-year-old woman who experienced a local reaction to the barium sulfate in Nexplanon. She was given medical treatment, but only the removal of the implant resolved the symptoms. After removal there was gradual improvement and 72 h later the patient was asymptomatic. Allergic reaction to barium sulfate is extremely rare: until now, there have only been two cases associated with Nexplanon described in the literature

    The intra-hepatic glissonian approach for liver ressections

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    The intra-hepatic glissonian approach has been considered an advance in the modern hepatic surgery by allowing a safe resection, with minor bleeding and maximum preservation of hepatic tissue. This paper explores the history, the anatomy, the techniques and how to perform and understand the intra-hepatic glissonian approaches

    Lavandula luisieri and Lavandula viridis essential oils as upcoming anti-protozoal agents: A key focus on leishmaniasis

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    Background and objectives: Leishmania species is the causative agent of leishmaniasis, a broad-spectrum clinical condition that can even be life-threatening when neglected. Current therapeutic strategies, despite beings highly cost-effective, have been increasingly associated with the appearance of drug-resistant microorganisms. Thus, an increasing number of thorough studies are needed towards upcoming drug discovery. This study aims to reveal the anti-protozoa activity of Lavandula luisieri and Lavandula viridis essential oils (EO) and their main components (1,8-cineole, linalool, and borneol). Materials and Methods: L. luisieri and L. viridis EO and their main components' leishmanicidal effects were tested in vitro against Leishmania infantum, Leishmania major, and Leishmania tropica strains. Cell viability effects were estimated by using the tetrazolium-dye (MTT) colorimetric method, morphological changes were assessed by scanning electron microscopy (SEM) and ultrastructural investigation by transmission electronic microscopy (TEM). Phosphatidylserine externalization, mitochondrial membrane potential (MMP), and cathepsin D activity assessment were also carried out. Finally, cytotoxic activity of the studied matrices was also determined in mammalian cells. Results: Plant-studied EO exhibited prominent anti-Leishmania effects (IC50 = 31-263 µg/mL), with L. luisieri being the most active one. At concentrations corresponding to IC50 values, EO-exposed L. infantum promastigotes suffered marked ultrastructural modifications. The presence of aberrant-shaped cells, mitochondrial and kinetoplast swelling, and autophagosomal structures were the most common evidenced changes. L. luisieri EO exerted its leishmanicidal activity through different mechanisms, but mainly through unleashing apoptosis. Phosphatidylserine externalization, mitochondrial membrane potential loss, and cell-cycle arrest at G(0)/G(1) phase were the most remarkable apoptosis-mediated aspects. Inhibition of cathepsin D activity was also observed. No toxic effects were found on macrophage cells. Conclusions: L. luisieri seems to be an upcoming source of bioactive molecules for leishmaniasis control and to find leading molecules for new drugs formulation against Leishmania infections.This work was supported by the European Regional Development Fund (ERDF), through the Centro 2020 Regional Operational Programme under project CENTRO-01-0145-FEDER-000008:BrainHealth 2020, and through the COMPETE 2020—Operational Programme for Competitiveness and Internationalisation and Portuguese national funds via FCT—Fundação para a Ciência e a Tecnologia, I.P., under strategic project POCI-01-0145-FEDER-007440 (UID/NEU/04539/2013). Acknowledgments: The authors are grateful to Jorge Paiva for helping in plant taxonomy; to José Correia da Costa from Centro de Imunologia e Biologia Parasitária, Instituto Nacional Ricardo Jorge, Porto for supplying L. infantum (zymodeme MON-1); to António Osuna, Departamento de Parasitología, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, for supplying L. major. FCT for Strategic project ref. UID/BIM/04293/2013, and “NORTE2020—Programa Operacional Regional do Norte” (NORTE-01-0145-FEDER-000012)

    Corporate brand identity in higher education: a relational perspective

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    Identity is traditionally defined as an emission concept (Kapferer, 2008). Yet, some research points out that there are external factors that that can influence it (Kennedy, 1975; Markwick e Fill, 1997; Balmer e Gray, 2000). This subject is even more interesting if one considers corporate brands. According to Aaker (2004) the number, the power and the credibility of corporate associations are bigger in the case corporate brands. Literature recognizes the influence of relationships between companies in identity management (Hakansson and Snehota, 1989, 1995; Hakansson and Ford, 2002). Yet, given the increasingly important role of corporate brands, it is surprising that to date no attempt to evaluate that influence has been made in corporate brand´s identity management and reputation. Also Keller and Lehman (2006) highlight relationships and costumer experience as two areas requiring more investigation. The authors argue that corporate brand´s identity can be developed under a relational perspective using relationships with other recognised brands in order to generate positive reputations in stakeholders. Based in relationship and corporate brand identity management, a framework is developed to identify how corporate brands select, develop and invest in relationships with other brands. The context of the proposed relationship concept is the services area (Dwyer et al, 1987; Moorman et al, 1992; Rauyruen et al, 2005 and Hennig-Thurau and Klee, 1997). An empirical qualitative research is designed using two reputational technological higher education institutions (two corporate brands) acting in Portuguese public higher education market.info:eu-repo/semantics/publishedVersio

    Moderate electric fields can inactivate Escherichia coli at room temperature

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    The inactivation of Escherichia coli using moderate electric fields (MEF) below 25 °C, was investigated. Keeping the temperature always below 25 °C demonstrated that electric fields are involved in the inactivation of E. coli, without possible synergistic temperature effects. Electric fields above 220 V cm−1 promoted death rates of 3 log10 cycles of E. coli in less than 6 min, and even higher rates at greater electric fields, while presumably overcoming the thermal degradation caused by conventional high temperature treatments. A non-thermal model was proposed that successfully describes the E. coli death kinetics under this treatment. SEM observations of E. coli cells after the exposure to the MEF treatment, revealed changes at the cell membrane level, indicating a possible cause for the cell death rates. These results show that this treatment holds potential for sterilization of thermolabile products (e.g. serum and other physiological fluids, food products), by itself or as a complement of the traditional heat-dependent techniques.The author R.C. Martins gratefully acknowledges his post-doctoral grant (SFRH/BPD/26133/2005) to the Fundação para a Ciência e Tecnologia (FCT), Portugal.Fundação para a Ciência e a Tecnologia (FCT) - SFRH/BPD/26133/200

    Gestão de P&D na Embrapa Gado de Leite: compêndio 2015.

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    Este documento traz uma compilação da estrutura de gestão da P&D, das normas, documentos e orientações referentes aos trâmites de propostas e contratos. Conteúdo: Estrutura da gestão de pesquisa e desenvolvimento (P&D): Chefia-adjunta de Pesquisa e Desenvolvimento; Comitê Técnico Interno (CTI); Núcleos Temáticos - 1 - Desenvolvimento socioecônomico da cadeia produtiva do leite, 2 - Saúde animal e qualidade do leite, 3 - Produção vegetal e pastagens, 4 - Produção e bem-estar animal; Núcleo de Apoio à Programação (NAP); Campos Experimentais; Setor de Gestão dos Laboratórios (SGL); Laboratórios da sede e seus responsáveis; Comissão Interna de Biossegurança (CIBio); Comissão de Ética no Uso de Animais (CEUA); Comitê Local de Propriedade Intelectual (CLPI); Comitê Local de Publicações (CLP); Sistema Embrapa de Gestão (SEG); Organização; Macroprogramas; Sistemas de gerenciamento; Glossário; Norma para tramitação de propostas na Embrapa Gado de Leite.bitstream/item/132294/1/DOC-183-completo.pd

    Cut-off points of the 1-minute sit-to-stand test to detect functional impairment and mortality risk in people with COPD

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    Introduction: Functional status is a key outcome in people with chronic obstructive pulmonary disease (COPD) and can be defined as an individual’s ability to perform normal daily activities required to meet basic needs, fulfill usual roles, and maintain health and well-being. The 1-minute sit-to-stand test (1-min STS) is a wellestablished measure to assess functional status in people with COPD that can be used in different settings (e.g., office, clinic, hospital, home) with limited resources (i.e., a chair and a stopwatch). This test is a strong predictor of exacerbations, hospitalizations and mortality in people with COPD. Yet, cut-off points to determine functional impairment with the 1-min STS in people with COPD are lacking for use in clinical practice. Recently, our group established a cut-off (19.5 repetitions) for increased mortality risk, however, it still lacks external validation. Objectives: To explore the predictive ability of the 1-min STS to detect functional impairment and the validity of the previously established cut-off for increased risk of mortality in people with COPD. Methods: A cross-sectional study was conducted with people with COPD. Age, sex, body mass index (BMI), lung function, the 1-min STS and the five-repetitions sit-to-stand tests were collected. We used two cut-offs for the five-repetitions sit-to-stand test known to be associated with low functional performance (12.1 seconds) and increased risk of mortality (15.98 seconds) in people with COPD. Receiver operating characteristics analysis (ROC) was performed and the area under the curve (AUC), sensitivity, specificity, and accuracy were calculated. The optimal cut-off points were identified by the highest Younden index. Results: In total, 302 people with COPD (67.5 ± 10.4 years; 79.1% male; BMI 26.7 ± 4.6 kg/m²; FEV1 55.2 ± 20.4%predicted) participated. Cut-off points in the 1-min STS of 23.5 repetitions for low functional performance (AUC = 0.92; 95%CI 0.89-0.95; 96.4% sensitivity; 80.9% specificity; accuracy = 0.84) and 18.5 repetitions for increased risk of mortality (AUC = 0.97; 95%CI 0.94-0.987; 95.5% sensitivity; 88.6% specificity; accuracy = 0.89) were found in people with COPD. Conclusions: The 1-min STS showed an outstanding discriminative ability and excellent accuracy in determining low functional performance and increased risk of mortality in people with COPD. A cut-off of 23.5 repetitions can be used to identify people with functional impairment. The cut-off point found for increased risk of mortality is similar to the previously published using the 6-minute walk test as an anchor, reinforcing the validity of this cut-off. These cut-offs support healthcare professionals in tailoring an appropriate management plan for this treatable trait and might possibly contribute to the implementation of timely preventive or palliative strategies.publishe

    Serological detection of Plasmodium vivax malaria using recombinant proteins corresponding to the 19-kDa C-terminal region of the merozoite surface protein-1

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    Background: Serological tests to detect antibodies specific to Plasmodium vivax could be a valuable tool for epidemiological studies, for screening blood donors in areas where the malaria is not endemic and for diagnosis of infected individuals. Because P. vivax cannot be easily obtained in vitro, ELISA assays using total or semi-purified antigens are rarely used. Based on this limitation, we tested whether recombinant proteins representing the 19 kDa C-terminal region of the merozoite surface protein-1 of P. vivax (MSP1(19)) could be useful for serological detection of malaria infection.Methods: Three purified recombinant proteins produced in Escherichia coli (GST-MSP1(19), His(6)-MSP1(19) and His(6)-MSP1(19)-PADRE) and one in Pichia pastoris (yMSP1(19)-PADRE) were compared for their ability to bind to IgG antibodies of individuals with patent P. vivax infection. the method was tested with 200 serum samples collected from individuals living in the north of Brazil in areas endemic for malaria, 53 serum samples from individuals exposed to Plasmodium falciparum infection and 177 serum samples from individuals never exposed to malaria.Results: Overall, the sensitivity of the ELISA assessed with sera from naturally infected individuals was 95%. the proportion of serum samples that reacted with recombinant proteins GST-MSP1(19), His(6)-MSP1(19), His(6)-MSP1(19)-PADRE and yMSP1(19)-PADRE was 90%, 93.5%, 93.5% and 93.5%, respectively. the specificity values of the ELISA determined with sera from healthy individuals and from individuals with other infectious diseases were 98.3% (GST-MSP1(19)), 97.7% (His(6)-MSP1(19) and His(6)-MSP1(19)-PADRE) or 100% (yMSP1(19)-PADRE).Conclusions: Our study demonstrated that for the Brazilian population, an ELISA using a recombinant protein of the MSP1(19) can be used as the basis for the development of a valuable serological assay for the detection of P. vivax malaria.Univ São Paulo, Dept Anal Clin & Toxicol, Fac Ciencias Farmaceut, BR-05508900 São Paulo, BrazilFed Univ Para, Dept Patol, Ctr Ciencias Biol, BR-66075900 Belem, Para, BrazilMinist Salud, Inst Evandro Chagas, Secretaria Vigilancia Saude, BR-66090000 Belem, Para, BrazilHosp Israelita Albert Einstein, Dept Hemoterapia, BR-05651901 São Paulo, BrazilUniversidade Federal de São Paulo, Dept Microbiol Imunol & Parasitol, BR-04023062 São Paulo, BrazilUniversidade Federal de São Paulo, Dept Microbiol Imunol & Parasitol, BR-04023062 São Paulo, BrazilWeb of Scienc
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