Anticuerpos anticardiolipina en pacientes con hipertensión arterial esencial

Los anticuerpos antifosfolípidos pueden activar el endotelio, modificar su función, alterar la regulación del tono vascular, producir daño renal, y así participar en la patogenia de la hipertensión arterial esencial.Antiphospholipid antibodies can activate the endothelium, alter their function, alter the regulation of vascular tone, cause kidney damage, and thus participate in the pathogenesis of essential hypertension.Fil: Diumenjo, M. S.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de InmunologíaFil: Testasecca, E.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de InmunologíaFil: Testasecca, A.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de InmunologíaFil: Maneschi, E.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de Inmunologí

CRESCIMENTO ABSOLUTA E RELATIVAMENTE EMPOBRECEDOR E A TESE DE PREBISCH E SINGER

Não há resumo

A role for microbial selection in frescoes' deterioration in Tomba degli Scudi in Tarquinia, Italy

Mural paintings in the hypogeal environment of the Tomba degli Scudi in Tarquinia, Italy, show a quite dramatic condition: the plaster mortar lost his cohesion and a white layer coating is spread over almost all the wall surfaces. The aim of this research is to verify if the activity of microorganisms could be one of the main causes of deterioration and if the adopted countermeasures (conventional biocide treatments) are sufficient to stop it. A biocide treatment of the whole environment has been carried out before the conservative intervention and the tomb has been closed for one month. When the tomb was opened again, we sampled the microorganisms present on the frescoes and we identified four Bacillus species and one mould survived to the biocide treatment. These organisms are able to produce spores, a highly resistant biological form, which has permitted the survival despite the biocide treatment. We show that these Bacillus strains are able to produce calcium carbonate and could be responsible for the white deposition that was damaging and covering the entire surface of the frescoes. Our results confirm that the sanitation intervention is non always resolutive and could even be deleterious in selecting harmful microbial communities

Factores trombogénicos sistémicos en paciente con síndrome coronario agudo con cinecoronariografía normal y patológica

En la fisiopatología del síndrome coronario agudo (SCA) sin evidencia de lesión ateromatosa oclusiva, podría participar un estado de hipertrombogenicidad sanguínea, generado por factores trombogénicos sistémicos, como los factores de riesgo cardiovascular y los que intervienen en el balance coagulación-anticoagulación, fibrinolisis y formación de fibrina. Objetivo: Estudiar y comparar los factores trombogénicos sistémicos en pacientes con SCA y cinecoronariografía (CCG) normal y patológica.In the pathophysiology of acute coronary syndrome (ACS) without evidence of occlusive atherosclerotic lesion, could participate a state of blood hipertrombogenicidad generated by systemic thrombogenic factors such as cardiovascular risk factors and those involved in the balance coagulation-anticoagulation, fibrinolysis and fibrin formation. Objective: Study and compare systemic thrombogenic factors in patients with ACS and normal and pathological coronary angiography (GCC).Fil: Testasecca, E.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de InmunologíaFil: Testasecca, A.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de InmunologíaFil: Maneschi, E.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de InmunologíaFil: Fragapane, P.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de InmunologíaFil: Diumenjo, M. S.. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Cátedra de Inmunologí

Calcite moonmilk of microbial origin in the Etruscan Tomba degli Scudi in Tarquinia, Italy

A white deposit covering the walls in the Stanza degli Scudi of the Tomba degli Scudi, Tarquinia, Italy, has been investigated. In this chamber, which is still preserved from any kind of intervention such as cleaning and sanitization, ancient Etruscans painted shields to celebrate the military power of the Velcha family. Scanning electron microscopy analysis has revealed the presence of characteristic nanostructures corresponding to a calcite secondary mineral deposit called moonmilk. Analysis of the microbial community identified Proteobacteria, Acidobacteria and Actinobacteria as the most common phyla in strong association with the moonmilk needle fibre calcite and nanofibers of calcium carbonate. Employing classical microbiological analysis, we isolated from moonmilk a Streptomyces strain able to deposit gypsum and calcium carbonate on plates, supporting the hypothesis of an essential contribution of microorganisms to the formation of moonmilk

Função de Produção Agregada e Progresso Tecnológico na Economia Brasileira

O propósito dêste artigo é apresentar e discutir os resultados obtidos na estimação de uma função de produção agregada para a economia brasileira. A Seção I contém uma breve apresentação da teoria e metodologia adotada. A Seção II apresenta os resultados obtidos e a Seção III encerra o artigo com algumas observações finais

Current exposure of Italian women of reproductive age to PFOS and PFOA: a human biomonitoring study

Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) concentrations were determined in serum samples collected in 2011-2012 from 549 nulliparous Italian women of reproductive age who resided in six different Italian Regions. Assessment of exposure to perfluorinated compounds was part of a large human biomonitoring study (Project Life Plus "Womenbiopop") that aimed at examining the exposure of women of reproductive age to priority organic pollutants. The median concentrations of PFOS and PFOA were 2.43, and 1.55ngg-1, respectively. Significant differences in the concentrations of both compounds were observed among the six Regions. Women from central Italy had the highest levels of both compounds, followed by women from northern Italy, and southern Italy. No differences in the PFOS concentrations were found between women from urban/industrial areas and women from rural areas, whereas the levels of PFOA were significantly higher in women residing in urban/industrial areas than in women residing in rural areas. Taken together, the observed concentrations confirm that the overall exposure of the Italian population is among the lowest observed in industrialized countries. A downward temporal trend in exposure was observed for both compounds when comparing the results from the present study with those assessed in a study conducted in 2008