146 research outputs found

    Understanding motivational factors in choosing a mobility destination: the case of Kauno Kolegija

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    With the central question being why mobility students choose Kauno Kolegija, it is the main goal to find out their opinion about the school starting with the question, what was their motivation to study in Kauno Kolegija. 53 students participated in the survey, being the majority of them Erasmus students.The data were obtained by a survey that took the form of an online questionnaire. This survey includes answers from EU and Non-EU students and it is based on a quantitative survey, which is after studied using the graphical analysis program SPSS.The major objective of this research is to help Kauno Kolegija with the best information and results to provide the responsible people with enough material to improve and increase the incoming students flow into the school from mobility studies and internships.Since the Erasmus program started, the flow of students has been going up and down, having students from Turkey as 40% of the income, Kauno Kolegija will benefit with the results by understanding why East Europe and nearby countries has more incoming students than West Europe and be able to fight this unbalance.info:eu-repo/semantics/publishedVersio

    Altered bone microarchitecture in a type 1 diabetes mouse model Ins2 Akita

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    Type 1 diabetes mellitus (T1DM) has been associated to several cartilage and bone alterations including growth retardation, increased fracture risk, and bone loss. To determine the effect of long term diabetes on bone we used adult and aging Ins2(Akita) mice that developed T1DM around 3-4 weeks after birth. Both Ins2(Akita) and wild-type (WT) mice were analyzed at 4, 6, and 12 months to assess bone parameters such as femur length, growth plate thickness and number of mature and preapoptotic chondrocytes. In addition, bone microarchitecture of the cortical and trabecular regions was measured by microcomputed tomography and gene expression of Adamst-5, Col2, Igf1, Runx2, Acp5, and Oc was quantified by quantitative real-time polymerase chain reaction. Ins2(Akita) mice showed a decreased longitudinal growth of the femur that was related to decreased growth plate thickness, lower number of chondrocytes and to a higher number of preapoptotic cells. These changes were associated with higher expression of Adamst-5, suggesting higher cartilage degradation, and with low expression levels of Igf1 and Col2 that reflect the decreased growth ability of diabetic mice. Ins2(Akita) bone morphology was characterized by low cortical bone area (Ct.Ar) but higher trabecular bone volume (BV/TV) and expression analysis showed a downregulation of bone markers Acp5, Oc, and Runx2. Serum levels of insulin and leptin were found to be reduced at all-time points Ins2(Akita). We suggest that Ins2(Akita) mice bone phenotype is caused by lower bone formation and even lower bone resorption due to insulin deficiency and to a possible relation with low leptin signaling.F. R. Carvalho and S. M. Calado acknowledge the financial support from the Portuguese Foundation for Science and Technology (FCT) through Ph.D. fellowships SFRH/BD/76429/2011 and SFRH/BD/76873/2011, respectively. This study was funded in part by CCMAR funding from European Regional Development Fund (ERDF) under COMPETE Program and through FCT under PEst-C/MAR/LA0015/2011 project and through UID/Multi/04326/2013 project. GA Silva was funded by (PIRG05-GA-2009-249314-EyeSee) and Research Center Grant UID/BIM/04773/2013 to CBMR

    Effects of Di-Isononyl Phthalate (DiNP) on Follicular Atresia in Zebrafish Ovary

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    Di-isononyl phthalate (DiNP) is a plasticizer reported to elicit hormone-like activity and disrupt metabolism and reproduction in fish and other vertebrates. In general, phthalates have been used at high concentrations beyond reported environmental levels to assess their adverse effects on fish gonadal physiology. The present study exposed adult female zebrafish to a wide range of DiNP concentrations [0.42 µg L−1 (10−9 M), 4.2 µg L−1 (10−8 M), and 42 µg L−1 (10−7 M)] for 21 days. We evaluated gene expression profiles related to apoptosis, autophagy, and oxidative stress; DNA fragmentation (TUNEL assay: terminal deoxynucleotidyl transferase dUTP nick end labeling) and caspase activity (CAS3) were also examined. Exposure to 0.42 and 4.2 µg L−1 upregulated the genes coding for tnfa and baxa, sod1, prkaa1, respectively. CAS3 immunohistochemistry revealed a higher number of positive vitellogenic oocytes in ovaries exposed to 0.42 µg L−1. Subsequently, we examined the relationship between CAS3 signaling and DNA fragmentation. Accordingly, DNA fragmentation was observed in vitellogenic follicles of fish exposed to 0.42 and 4.2 μg L−1. Our results demonstrate that follicular atresia can occur after exposure to environmental levels of DiNP for 21 days, which may adversely affect the reproductive performance of female zebrafish in a non-monotonic manner.Fil: Godoi, Filipe G. Andrade. Università Politecnica dele Marche; Italia. Universidade de Sao Paulo; BrasilFil: Forner Piquer, Isabel. Università Politecnica dele Marche; ItaliaFil: Randazzo, Basilio. Università Politecnica dele Marche; ItaliaFil: Habibi, Hamid R.. University of Calgary; CanadáFil: Lo Nostro, Fabiana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; ArgentinaFil: Moreira, Renata Guimarães. Universidade de Sao Paulo; BrasilFil: Carnevali, Oliana. Università Politecnica dele Marche; Italia. Consorzio Interuniversitario di Biosistemi e Biostrutture; Itali

    “Experiências em Relações Próximas”, um questionário de avaliação das dimensões básicas dos estilos de vinculação nos adultos: Tradução e validação para a população Portuguesa

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    Este artigo apresenta o desenvolvimento do questionário “Experiências em Relações Próximas”, versão Portuguesa do “Experiences in Close Relationships” (Brennan, Clark, & Shaver, 1998), bem como dados relativos à sua precisão e validade. Este questionário pretende avaliar as duas dimensões básicas das diferenças individuais no estilo de vinculação dos adultos, a evitação e a preocupação, as quais emergiram da análise factorial de um conjunto abrangente de itens em uso corrente na avaliação da vinculação nos adultos. Os dados relativos à versão Portuguesa mostram que, embora se verifiquem alguns problemas no ajustamento dos dados ao modelo de medida pressuposto, os resultados revelam elevados níveis de precisão por consistência interna e relações significativas com outras variáveis, tal como seria de prever a partir da teoria da vinculação. Estas variáveis incluem não só medidas de auto-relato, como também variáveis de outros tipos, mostrando que as correlações encontradas não correspondem apenas a factores de método

    Biofilm Localization in the Vertical Wall of Shaking 96-Well Plates

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    Microtiter plates with 96 wells are being increasingly used for biofilm studies due to their high throughput, low cost, easy handling, and easy application of several analytical methods to evaluate different biofilm parameters. These methods provide bulk information about the biofilm formed in each well but lack in detail, namely, regarding the spatial location of the biofilms. This location can be obtained by microscopy observation using optical and electron microscopes, but these techniques have lower throughput and higher cost and are subjected to equipment availability. This work describes a differential crystal violet (CV) staining method that enabled the determination of the spatial location of Escherichia coli biofilms formed in the vertical wall of shaking 96-well plates. It was shown that the biofilms were unevenly distributed on the wall with denser cell accumulation near the air-liquid interface. The results were corroborated by scanning electron microscopy and a correlation was found between biofilm accumulation and the wall shear strain rates determined by computational fluid dynamics. The developed method is quicker and less expensive and has a higher throughput than the existing methods available for spatial location of biofilms in microtiter plates

    “Experiências em Relações Próximas”, um questionário de avaliação das dimensões básicas dos estilos de vinculação nos adultos: Tradução e validação para a população Portuguesa

    Get PDF
    Este artigo apresenta o desenvolvimento do questionário “Experiências em Relações Próximas”, versão Portuguesa do “Experiences in Close Relationships” (Brennan, Clark, & Shaver, 1998), bem como dados relativos à sua precisão e validade. Este questionário pretende avaliar as duas dimensões básicas das diferenças individuais no estilo de vinculação dos adultos, a evitação e a preocupação, as quais emergiram da análise factorial de um conjunto abrangente de itens em uso corrente na avaliação da vinculação nos adultos. Os dados relativos à versão Portuguesa mostram que, embora se verifiquem alguns problemas no ajustamento dos dados ao modelo de medida pressuposto, os resultados revelam elevados níveis de precisão por consistência interna e relações significativas com outras variáveis, tal como seria de prever a partir da teoria da vinculação. Estas variáveis incluem não só medidas de auto-relato, como também variáveis de outros tipos, mostrando que as correlações encontradas não correspondem apenas a factores de método

    Characterization of a new anellovirus species infecting an ocelot (Leopardus pardalis) in Brazil

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    Abstract A complete genome of the first anellovirus infecting the wild felid Leopardus pardalis (ocelot) and a partial genome were assembled and annotated through high-throughput sequencing protocols followed by Sanger sequencing validation. The full-length virus obtained comprises 2,003 bp, while the partial genome comprises 1,224 bp. Phylogenetic analysis grouped these two sequences in two distinct clusters related to previously described Felidae anelloviruses. The ORF1 of the partial genome was identified as a new species provisionally called Torque teno ocelot virus, with 53.6% identity with its sister lineage. The complete genome was inferred as a new representative of the Torque teno felid virus 3 species, with 73.28% identity to the closest reference. This study expands known virus diversity and the host span of anelloviruses

    Dynamics of a Dual SARS-CoV-2 Lineage Co-Infection on a Prolonged Viral Shedding COVID-19 Case: Insights into Clinical Severity and Disease Duration

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    A few molecularly proven severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) cases of symptomatic reinfection are currently known worldwide, with a resolved first infection followed by a second infection after a 48 to 142-day intervening period. We report a multiple-component study of a clinically severe and prolonged viral shedding coronavirus disease 2019 (COVID-19) case in a 17-year-old Portuguese female. She had two hospitalizations, a total of 19 RT-PCR tests, mostly positive, and criteria for releasing from home isolation at the end of 97 days. The viral genome was sequenced in seven serial samples and in the diagnostic sample from her infected mother. A human genome-wide array (>900 K) was screened on the seven samples, and in vitro culture was conducted on isolates from three late samples. The patient had co-infection by two SARS-CoV-2 lineages, which were affiliated in distinct clades and diverging by six variants. The 20A lineage was absolute at the diagnosis (shared with the patient's mother), but nine days later, the 20B lineage had 3% frequency, and two months later, the 20B lineage had 100% frequency. The 900 K profiles confirmed the identity of the patient in the serial samples, and they allowed us to infer that she had polygenic risk scores for hospitalization and severe respiratory disease within the normal distributions for a Portuguese population cohort. The early-on dynamic co-infection may have contributed to the severity of COVID-19 in this otherwise healthy young patient, and to her prolonged SARS-CoV-2 shedding profile.The authors acknowledge the support of the i3S Scientific Platforms BioSciences Screening and Genomics, members of the national infrastructure PPBI-Portuguese Platform of Bioimaging (PPBI-POCI-01-0145-FEDER-022122), PT-OPENSCREEN, GenomePT project (POCI-01-0145-FEDER-022184)

    Ghrelin expression in human and rat fetal lungs and the effect of ghrelin administration in nitrofen-induced congenital diaphragmatic hernia

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    Ghrelin is a strong physiologic growth hormone secretagogue that exhibits endocrine and non-endocrine actions. In this study, ghrelin expression in humans and rats was evaluated throughout development of normal and hypoplastic lungs associated with congenital diaphragmatic hernia (CDH). Additionally, the effect of antenatal treatment with ghrelin in the nitrofen-induced CDH rat model was tested. In normal lungs, ghrelin was expressed in the primitive epithelium at early stages of development and decreased in levels of expression with gestational age. In hypoplastic lungs ghrelin was overexpressed in both human and rat CDH fetuses when compared with controls. Exogenous administration of ghrelin to nitrofen-treated dams led to an attenuation of pulmonary hypoplasia of CDH pups. Furthermore, the growth hormone, secretagogue receptor (GHSR1a), could not be amplified from human or rat fetal lungs by RT-PCR. In conclusion, of all the lungs studied so far, the fetal lung is one of the first to express ghrelin during development and might be considered a new source of circulating fetal ghrelin. Overexpression of ghrelin in hypoplastic lungs and the effect of exogenous administration of ghrelin to nitrofen-treated dams strongly suggest a role for ghrelin in mechanisms involved in attenuation of fetal lung hypoplasia, most likely through a GHSR1a-independent pathway
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