354 research outputs found

    Designing Culture-intensive Artefacts. How the Design Process Interprets Craft Reiteration to Build Future Diversities.

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    The paper approaches the subject of traditional craft and local know-how from the perspective of design practice. The specific focus is on those fields of design that produce the so-called culture-intensive goods (Hesmondhalgh, 2002; Bovone and Mora, 2003), such as fashion, home goods and food. They are the result of recombination by design of a specific cultural capital into new shapes and meanings. Thanks to "Made in Italy" best practices context selected in those fields, the paper will discuss how design shapes future artefacts rooted in the reinterpretation of the past. On one hand, accessing craft culture and its reiterative attitude of transmission of identity and tradition along times. On the other hand, recombining craft processes into reconfigured practice, encoding different meanings into new narratives

    Genes and primary headaches: discovering new potential therapeutic targets

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    Genetic studies have clearly shown that primary headaches (migraine, tension-type headache and cluster headache) are multifactorial disorders characterized by a complex interaction between different genes and environmental factors. Genetic association studies have highlighted a potential role in the etiopathogenesis of these disorders for several genes related to vascular, neuronal and neuroendocrine functions. A potential role as a therapeutic target is now emerging for some of these genes. The main purpose of this review is to describe new advances in our knowledge regarding the role of MTHFR, KCNK18, TRPV1, TRPV3 and HCRTR genes in primary headache disorders. Involvement of these genes in primary headaches, as well as their potential role in the therapy of these disorders, will be discussed

    Severe pertussis infection in infants less than 6 months of age: clinical manifestations and molecular characterization

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    We conducted a study to determine the main traits of pertussis among unimmunized infants less than 6 months of age. From August 2012 to March 2015, 141 nasopharyngeal aspirates (NPAs) were collected from infants with respiratory symptoms attending 2 major hospitals in Rome. Clinical data were recorded and analyzed. Lab-confirmation was performed by culture and realtime PCR. B. pertussis virulence-associated genes (ptxP, ptxA and prn), together with multilocus variable-number tandem repeat analysis (MLVA), were also investigated by the sequence-based analysis on the DNAs extracted from positive samples. Antibiotic susceptibility with Etest was defined on 18 viable B. pertussis isolates. Samples from 73 infants resulted positives for B. pertussis. The median age of the patients was 45 d (range 7–165); 21 infants were treated with macrolides before hospital admission. Cough was reported for a median of 10 d before admission and 18 d after hospital discharge among infected infants, 84% of whom showed paroxysmal cough. No resistance to macrolides was detected. Molecular analysis identified MT27 as the predominant MLVA profile, combined with ptxP3-ptxA1-prn2 associated virulence genes. Although our data may not be generalized to the whole country, they provide evidence of disease severity among infants not vaccinated against pertussis. Moreover, genetically related B. pertussis strains, comprising allelic variants of virulence associated genes, were identified

    meningococcal c conjugate vaccine effectiveness before and during an outbreak of invasive meningococcal disease due to neisseria meningitidis serogroup c cc11 tuscany italy

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    Abstract Introduction In Tuscany, Italy, where a universal immunization program with monovalent meningococcal C conjugate vaccine (MCC) was introduced in 2005, an outbreak of invasive meningococcal disease (IMD) due to the hypervirulent strain of Neisseria meningitidis C/cc11 occurred in 2015–2016, leading to an immunization reactive campaign using either the tetravalent (ACWY) meningococcal conjugate or the MCC vaccine. During the outbreak, IMD serogroup C (MenC) cases were also reported among vaccinated individuals. This study aimed to characterize meningococcal C conjugate vaccines (MenC-vaccines) failures and to estimate their effectiveness since the introduction (2005–2016) and during the outbreak (2015–2016). Methods MenC cases and related vaccine-failures were drawn from the National Surveillance System of Invasive Bacterial Disease (IBD) for the period 2006–2016. A retrospective cohort-study, including the Tuscany' population of the birth-cohorts 1994–2014, was carried out. Based on annual reports of vaccination, person-years of MenC-vaccines exposed and unexposed individuals were calculated by calendar-year, birth-cohort, and local health unit. Adjusted (by birth-cohort, local health unit, and calendar-year) risk-ratios (ARR) of MenC invasive disease for vaccinated vs unvaccinated were estimated by the Poisson model. Vaccine-effectiveness (VE) was estimated as: VE = 1-ARR. Results In the period 2006–2016, 85 MenC-invasive disease cases were reported; 61 (71.8%) from 2015 to 2016. Twelve vaccine failures occurred, all of them during the outbreak. The time-interval from immunization to IMD onset was 20 days in one case, from 9 months to 3 years in six cases, and ≥7 years in five cases. VE was, 100% (95%CI not estimable, p = 0.03) before the outbreak (2006–2014) and 77% (95%CI 36–92, p  Conclusions In Tuscany, MenC-vaccine failures occurred exclusively during the 2015–2016 outbreak. Most of them occurred several years after vaccination. VE during the outbreak-period was rather high supporting an effective protection induced by MenC-vaccines

    Circulating MicroRNAs in Elderly Type 2 Diabetic Patients

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    The circulating microRNAs (miRNAs) associated with type 2 diabetes (T2D) in elderly patients are still being defined. To identify novel miRNA biomarker candidates for monitoring responses to sitagliptin in such patients, we prospectively studied 40 T2D patients (age > 65) with HbA1c levels of 7.5–9.0% on metformin. After collection of baseline blood samples (t0), the dipeptidyl peptidase-IV (DPP-IV) inhibitor (DPP-IVi) sitagliptin was added to the metformin regimen, and patients were followed for 15 months. Patients with HbA1c0.5% after 3 and 15 months of therapy were classified as “responders” (group R, n = 34); all others were classified as “nonresponders” (group NR, n = 6). Circulating miRNA profiling was performed on plasma collected in each group before and after 15 months of therapy (t0 and t15). Intra- and intergroup comparison of miRNA profiles pinpointed three miRNAs that correlated with responses to sitagliptin: miR-378, which is a candidate biomarker of resistance to this DPP-IVi, and miR-126-3p and miR-223, which are associated with positive responses to the drug. The translational implications are as immediate as evident, with the possibility to develop noninvasive diagnostic tools to predict drug response and development of chronic complications

    Diseño de un sistema de compostaje y lombricultivo como solución primaria para el procesamiento de residuos biodegradables, en la zona de influencia del ecoparque los trapiche

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    La generación de residuos sólidos orgánicos es cada vez más creciente, generando una serie de impactos ambientales significativos especialmente sobre el agua, suelo y aire. Si bien, en los últimos años se ha concientizado sobre la importancia de la separación en la fuente y la disposición adecuada de los diferentes tipos de residuos que se producen, estos por lo general continúan llegando al relleno sanitario en donde son enterrados, generando lixiviados que contaminan el agua subterránea, gases que contaminan el aire y generando malos olores que afectan la calidad de vida y el bienestar de las comunidades aledañas a los lugares de disposición. Si bien, en la zona rural es más sencillo reutilizar este tipo de residuos, en la mayoría de los casos termina en el relleno sanitario o contaminando fuentes de agua. Partiendo de esta situación, este trabajo busca explorar una alternativa para el manejo adecuado de los residuos sólidos orgánicos, producidos por varios restaurantes de San Antonio del Tequendama, utilizando este tipo de residuos como materia prima para la elaboración de lombricompost, el cual es utilizado como fertilizante en otros procesos productivos dentro del Ecoparque Los Trapiches. De esta manera, se contribuye a la disminución de desperdicios que generalmente se convertirían en fuente de contaminación, produciendo un fertilizante que sirve como soporte a la producción agrícola que se da dentro del Ecoparque Los Trapiches. Dentro de este trabajo de investigación, se realizó una caracterización de los residuos orgánicos producidos por cada uno de los restaurantes, la implementación de un prototipo del sistema propuesto a escala piloto, el diseño del sistema para la producción de lombricompost más pertinente teniendo en cuenta la información recolectada y por último la formulación de protocolos de lombricultura y compostaje a diferente escala.Universidad Libre - Facultad de Ingeniería - Ingeniería Ambienta

    Characterization and phylogenetic epitope mapping of CD38 ADPR cyclase in the cynomolgus macaque

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    BACKGROUND: The CD38 transmembrane glycoprotein is an ADP-ribosyl cyclase that moonlights as a receptor in cells of the immune system. Both functions are independently implicated in numerous areas related to human health. This study originated from an inherent interest in studying CD38 in the cynomolgus monkey (Macaca fascicularis), a species closely related to humans that also represents a cogent animal model for the biomedical analysis of CD38. RESULTS: A cDNA was isolated from cynomolgus macaque peripheral blood leukocytes and is predicted to encode a type II membrane protein of 301 amino acids with 92% identity to human CD38. Both RT-PCR-mediated cDNA cloning and genomic DNA PCR surveying were possible with heterologous human CD38 primers, demonstrating the striking conservation of CD38 in these primates. Transfection of the cDNA coincided with: (i) surface expression of cynomolgus macaque CD38 by immunofluorescence; (ii) detection of ~42 and 84 kDa proteins by Western blot and (iii) the appearance of ecto-enzymatic activity. Monoclonal antibodies were raised against the cynomolgus CD38 ectodomain and were either species-specific or cross-reactive with human CD38, in which case they were directed against a common disulfide-requiring conformational epitope that was mapped to the C-terminal disulfide loop. CONCLUSION: This multi-faceted characterization of CD38 from cynomolgus macaque demonstrates its high genetic and biochemical similarities with human CD38 while the immunological comparison adds new insights into the dominant epitopes of the primate CD38 ectodomain. These results open new prospects for the biomedical and pharmacological investigations of this receptor-enzyme

    In vitro Interactions between Streptococcus intermedius and Streptococcus salivarius K12 on a Titanium Cylindrical Surface

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    Peri-implantitis is a steadily rising disease and is caused by oral bacterial pathogens able to form biofilm on implant surfaces and peri-implant tissues, making antibiotics treatment less effective. The use of commercial probiotics against oral pathogens could serve as an alternative to prevent biofilm formation. Streptococcus intermedius is one of the early colonizers of biofilm formation in dental implants. The aim of this study was to model the interaction between S. intermedius and Streptococcus salivarius strain K12, a probiotic bacterium producing bacteriocins. S. intermedius was co-cultured with S. salivarius K12 in an in vitro model simulating the biofilm formation in a dental implant composed by a titanium cylinder system. Biofilm formation rate was assessed by Real-Time PCR quantification of bacterial count and expression levels of luxS gene, used in response to cell density in the biofilm. Biofilm formation, bacteriocin production, luxS expression patterns were found to be already expressed within the first 12 h. More importantly, S. salivarius K12 was able to counter the biofilm formation in a titanium cylinder under the tested condition. In conclusion, our dental implant model may be useful for exploring probiotic-pathogen interaction to find an alternative to antibiotics for peri-implantitis treatment
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