98 research outputs found

    Vernon Lee’s The Ballet of the Nations: A Modern Morality, an Intermedial Mosaic

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    Vernon Lee’s The Ballet of the Nations: A Present-Day Morality (1915) documents the rise of nationalist discourses that led to World War I, as well as Lee’s zealous commitment to the promotion of pacifist values in contradiction to the rhetoric that had been fuelling the hostilities. The letter that she addressed to the secretary of the Women Suffrage Alliance, Rosika Schwimmer, which appeared in the Evening Post on 3 October 1914, is a blatant vindication of her activism. Besides stating the need for women across the world to take sides against the barbarity that was plaguing Europe, Lee offers a passionate summary of her engagement with contemporary politics

    Guanylin and E.coli heat-stable enterotoxin induce chloride secretion through direct interaction with basolateral compartment of rat and human coloni cells.

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    We previously detected specific binding activity of Escherichia coli heat-stable enterotoxin (ST), the guanylin exogenous ligand, in rat colonic basolateral membranes. Because guanylin circulates in the bloodstream, we tested the hypothesis that it modulates intestinal ion transport by acting on the serosal side of intestinal cells. The effects of the mucosal and serosal addition of ST and guanylin on ion transport were investigated in the rat proximal colon and in Caco-2 cells in Ussing chambers, by monitoring short-circuit current (Isc). cGMP concentration was measured in Caco-2 cells by RIA. Mucosal ST addition induced an increase in Isc in rat proximal colon consistent with anion secretion. Serosal addition induced the same effects but to a lesser extent. The electrical effects observed in Caco-2 cells paralleled those observed in rat proximal colon. A pattern similar to the electrical response was observed with cGMP concentration. Guanylin addition to either side of Caco-2 cells induced the same effects as ST, although to a lesser extent. In all conditions, the electrical effect disappeared in the absence of chloride. ST directly interacts with basolateral receptors in the large intestine inducing chloride secretion through an increase of cGMP. However, the serosal effects are less pronounced compared with those observed with mucosal addition. Guanylin shows the same pattern, suggesting that it plays a role in the regulation of ion transport in the colon, but the relative importance of serosally mediated secretion remains to be determined

    Rotavirus induces a biphasic enterotoxic and cytotoxic response in human-derived intestinal enterocytes, which is inhibited by human immunoglobulins.

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    The mechanisms of diarrhea due to rotavirus infection in humans are not fully understood; no specific therapy is available, but orally administered human serum immunoglobulins are effective in blocking stool output. We aimed to investigate the effect of rotavirus on ion transport and the role of NSP4 in human-derived enterocytes, and to test the efficacy of human serum immunoglobulin in a model of rotavirus infection. Soon after infection, rotavirus induces active chloride secretion in enterocytes. This effect is evident before viral replication leads to cell damage and correlates with NSP4 production. Inhibition of NSP4 prevents the early secretory phase but not cell damage. Incubation with human serum immunoglobulin blocks both ion secretion and cell damage. Rotavirus exerts an early NSP4-dependent ion secretion and subsequent tissue damage. The combined enterotoxic and cytotoxic effects may be responsible for the increased severity of diarrhea due to rotavirus infection, and both are counteracted by human serum immunoglobulin

    Efficacy of ginger as antiemetic in children with acute gastroenteritis: a randomised controlled trial

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    Background: Ginger is a spice with a long history of use as a traditional remedy for nausea and vomiting. No data on the efficacy of ginger are presently available for children with vomiting associated with acute gastroenteritis (AGE). Aim: To test whether ginger can reduce vomiting in children with AGE. Methods: Double-blind, randomised placebo-controlled trial in outpatients aged 1 to 10 years with AGE-associated vomiting randomised to ginger or placebo. The primary outcome was the occurrence of ≥1 episode of vomiting after the first dose of treatment. Severity of vomiting and safety were also assessed. Results: Seventy-five children were randomised to the ginger arm and 75 to the placebo arm. Five children in the ginger arm and 4 in the placebo arm refused to participate in the study shortly after randomisation, leaving 70 children in the ginger arm and 71 in the placebo arm (N = 141). At intention-to-treat analysis (N = 150), assuming that all children lost to follow-up had reached the primary outcome, the incidence of the main outcome was 67% (95% CI 56 to 77) in the ginger group and 87% (95% CI 79 to 94) in the placebo group, corresponding to the absolute risk reduction for the ginger versus the placebo group of −20% (95% CI −33% to −7%, P = 0.003), with a number needed to treat of 5 (95% CI 3 to 15). Conclusion: Oral administration of ginger is effective and safe at improving vomiting in children with AGE. Trial registration: The trial was registered on https://clinicaltrials.gov/ with the identifier NCT02701491

    Efficacy of a New Hypotonic Oral Rehydration Solution Containing Zinc and Prebiotics in the Treatment of Childhood Acute Diarrhea: A Randomized Controlled Trial

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    Objective: To evaluate the efficacy of a hypotonic oral rehydration solution (ORS) containing zinc and prebiotics for treatment of acute diarrhea in children. Study design: We conducted a single-blind, prospective, controlled trial including children (age range, 3-36 months) with acute diarrhea randomly assigned to standard hypotonic ORS (group 1) or to new hypotonic ORS containing zinc and prebiotics (group 2). The main outcome was the rate of resolution of diarrhea at 72 hours. Results: A total of 60 children in group 1 (34 male; mean age, 18.58 months; 95% CI, 15.5-21.6) and 59 in group 2 (36 male; mean age, 19.26 months; 95% CI, 15.9-22.6) completed the study protocol. The rate of diarrhea resolution at 72 hours was higher in group 2 (50% versus 72.9%, P = .010). Total ORS intake in the first 24 hours was higher in group 2 (50 mL/kg; 95% CI, 41-59 versus 22 mL/kg; 95% CI, 17-29; P < .001). The mean number of missed working days by the parents of children in group 2 was lower (0.39; 95% CI, 0.08-0.70 versus 1.45; 95% CI 1.02-1.88; P < .001). Fewer patients in group 2 needed adjunctive drugs for the treatment of diarrhea 6/59 versus 19/60, P = .004. No adverse events were observed in either of the two groups. Conclusion: The addition of zinc and prebiotics to ORS limits diarrhea duration in children. Copyright © 2011 Mosby Inc. All rights reserved

    Randomised clinical trial: efficacy of a new synbiotic formulation containing Lactobacillus paracasei B21060 plus arabinogalactan and xilooligosaccharides in children with acute diarrhoea.

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    BACKGROUND: Acute diarrhoea is a frequent problem in children with heavy economic burden for families and society. AIM: To test the efficacy of a new synbiotic formulation containing Lactobacillus paracasei B21060, arabinogalactan and xilooligosaccharides in children with acute diarrhoea. METHODS: Double-blind, randomised, placebo-controlled trial, including children (age 3-36 m) with acute diarrhoea who were allocated to placebo or synbiotic group. Major outcome was resolution rate of diarrhoea at 72 h. Total duration of diarrhoea, daily stool outputs, stool consistency, working days lost by parents, adjunctive medications, and hospitalisation were also assessed. RESULTS: We enrolled 55 children in placebo group and 52 in synbiotic group. The two groups were similar for demographic and clinical characteristics. Resolution rate of diarrhoea at 72 h was significantly higher in synbiotic group (67%) compared to placebo group (40%, P = 0.005). Children in synbiotic group showed a significant reduction in the duration of diarrhoea (90.5 h, 78.1-102.9 vs. 109.8 h, 96.0-123.5, P = 0.040), daily stool outputs (3.3, 2.8-3.8 vs. 2.4, 1.9-2.8, P = 0.005) and stool consistency (1.3, 0.9-1.6 vs. 0.6, 0.4-0.9, P = 0.002) compared to placebo group (data expressed as mean, 95% CI). Rate of parents that missed at least one working day (41.8% vs. 15.4%, P = 0.003), rate of children that needed adjunctive medications (25.5% vs. 5.8%, P = 0.005) or hospitalisation (10.9% vs. 0%, P = 0.014) after the first 72 h of treatment, were reduced in synbiotic group. CONCLUSION: The synbiotic formulation studied is effective in children with acute diarrhoea. Australian New Zealand Clinical Trials Registry (ACTRN12611000641998)

    Multisystem autoimmune disease caused by increased STAT3 phosphorylation, and dysregulated gene expression

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    Signal transducer and activator of transcription (STAT) 3 is a member of the STAT family, and plays a major role in various immunological mechanisms.1 Mutations in STAT3 are associated with a broad spectrum of manifestations, including immunodeficiency, autoimmunity, and malignancy.2 In particular, heterozygous germline loss-of-function (LOF) mutations cause Hyper-IgE syndrome (HIES),3–5 while heterozygous germline gain-of-function (GOF) mutations have recently been associated to multi-organ autoimmune manifestations (i.e. type 1 diabetes, enteropathy, cytopenia, interstitial lung disease, hypothyroidism), lymphoproliferation, short stature, and recurrent infections (OMIM #615952).6–8 We report a 7-year-old boy who presented with early-onset severe enteropathy, and diffuse eczematous dermatitis since birth. During the first weeks of life, Hirschsprung disease was also suspected and surgically treated. Gastrointestinal and cutaneous manifestations were first ascribed to food allergy with quite a good response to amino acid-based formula. In the following months, the patient failed to thrive, and developed respiratory tract infections. At two years, the patient presented with progressive interstitial lung disease characterized by lymphocytic interstitial infiltration leading to pulmonary hypertension, tricuspid insufficiency, and right ventricular heart failure with hepatomegaly. Because of the increased risk of infections, he received intravenous (IV) immunoglobulin infusions (400 mg/kg), prophylaxis with cotrimoxazole and fluconazole. Methylprednisolone at 0.3 mg/kg/day was also given to treat autoimmune manifestations

    La influencia de la responsabilidad social empresarial en el comportamiento de compra de los consumidores de chocolate de Lima Metropolitana mayores de 51 años

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    Es claro que la responsabilidad social empresarial ha venido ganando relevancia a nivel internacional y en el Perú. Algunos estudios, como el del Dr. Percy Samoel Marquina Feldman, han permitido conocer su impacto en el consumidor. Esta investigación busca evidencias sobre la influencia que la responsabilidad social empresarial tiene en el comportamiento de compra de los consumidores de chocolate mayores de 51 años en Lima Metropolitana. Se llevó a cabo un experimento bajo la metodología de los Modelos de Elección Discreta con el propósito de cuantificar la intención de compra y la disposición a pagar por las acciones de responsabilidad social desarrolladas por las empresas. El experimento se realizó utilizando una muestra por conveniencia de 132 consumidores de chocolate mayores de 51 años en Lima Metropolitana. Esta tesis es una ampliación del alcance de la investigación doctoral del profesor Percy Samoel Marquina Feldman, La influencia de la responsabilidad social empresarial en el comportamiento de compra de los consumidores peruanos (CENTRUM, Centro de Negocios de la Pontificia Universidad Católica del Perú, Lima, 2009). Asimismo, busca validar si la relación identificada originalmente por el profesor Marquina también se presenta en la categoría de chocolate para personas mayores de 51 años, tal como el autor lo sugiere en sus recomendaciones finales. Con la autorización del autor, se han utilizado partes de su tesis, particularmente las que se refieren a la revisión de la literatura y el método. Los resultados de la investigación brindan evidencia empírica de la relación positiva entre la responsabilidad social empresarial y el comportamiento de compra de los consumidores de chocolate mayores de 51 años en Lima Metropolitana.The Social Responsibility Enterprise is gaining relevance and importance around the world and our country is no stranger to this reality. Some studies, like the investigation done by Dr. Percy Samoel Marquina Feldman, has let us know its impact about the consumer. This investigation try to find evidences about the influence that the Social Responsibility Enterprise have in the purchase behavior of consumers of chocolate, who are more than 51 years old, in Lima Metropolitana. An experiment was performed under the methodology of discrete choice models in order to quantify the purchase intention and the willingness to pay for the responsibility social actions carried out for the enterprises. This experiment used a convenient sample of 132 consumers of chocolate, who are more than 51 years old, in Lima Metropolitana. This tesis is an extension of the alcance of the investigation done by Percy Marquina Feldman, La influencia de la responsabilidad social empresarial en el comportamiento de compra de los consumidores peruanos (CENTRUM, Centro de Negocios de la Pontificia Universidad Católica del Perú, Lima, 2009). Further, tried to find the validation if the identified reality in a beginning by the Marquina professor is the same in the chocolate category, for the people who are more than 51 years old as the author refers in his final recomendations. With the author permission, we used parts of his doctoral tesis, in particular the parts about the literature review and the methodology. Empirical results obtained provide evidence about the positive relationship between the Social Responsibility Enterprise and the purchase behavior of consumers of chocolate, who are more than 51 years old, in Lima Metropolitana.Tesi
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