80 research outputs found

    Arsenic contamination at the Bagnoli Bay seabed (South Italy) via particle tracking numerical modeling: Pollution patterns from stationary climatic forcings

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    Almost 140 years of industrial exploitation have severely degraded the environment of Bagnoli Coroglio (BC), the westernmost neighborhood of the city of Naples (Italy). In this peculiar area, however, geogenic processes overlap with the impact of human activities, making it difficult to distinguish between anthropogenic and geogenic pollution sources. This is particularly true for Arsenic, the concentration of which in the marine sediments largely exceeds the tolerable level for human health and the background value for local pyroclastics. After several studies have used traditional tools based on multivariate statistics, this article attempts at tackling the problem via numerical modeling, which provides a deeper insight into the physics that governs the pollution process. Therefore, we use a particle tracking model to assess whether arsenic levels in the seabed can be affected by the influx of thermal water from an artificial channel outfalling at the westernmost part of the coast The climatic forcings that drive the marine circulation are simplified to basic “scenarios”, in which wind and waves are stationary in strength and direction. Since the simulation time is much less than the contamination timescale, the comparison between numerical results and measurements is essentially qualitative and concerns the shape of contamination contours

    Laboratory studies of the ARUM process : progress report

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    The following is a progress report on the developmental programme of the ARUM process conducted at the Microbiology Services Laboratory of Dearborn Chemical Company Limited. It covers the period from April 1990 to December 199

    Difficult weaning from cardiopulmonary bypass after surgical VSD closure: An unusual rare case

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    The connection of the left coronary artery to the pulmonary artery may be asymptomatic due to high pulmonary vascular resistance in the context of left-to-right shunts. Before the repair of the mentioned anomalies, coronary anatomy must be defined. © 2020 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd

    Electric field effects on proteins Novel perspectives on food and potential health implications

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    Electric fields (EF) technologies have been establishing a solid position in emergent food processing and have seen as serious alternatives to traditional thermal processing. During the last decades, research has been devoted to elucidation of technological and safety issues but also fundamental aspects related with interaction of electric fields (EF) with important macromolecules, such as proteins. Proteins are building blocks for the development of functional networks that can encompass health benefits (i.e. nutritional and bioactive properties) but may be also linked with adverse effects such as neurodegenerative diseases (amyloid fibrils) and immunological responses. The biological function of a protein depends on its tridimensional structure/conformation, and latest research evidences that EF can promote disturbances on protein conformation, change their unfolding mechanisms, aggregation and interaction patterns. This review aims at bringing together these recent findings as well as providing novel perspectives about how EF can shape the behavior of proteins towards the development of innovative foods, aiming at consumers health and wellbeing.This study was supported by the Portuguese Foundation for Science and Technology (FCT) under the scope of the strategic funding of UID/ BIO/04469/2019 and UIDB 50006/2020 with funding from FCT/ MCTES through national funds, BioTecNorte operation (NORTE-01- 0145-FEDER-000004) funded by the European Regional Development Fund under the scope of Norte2020 - Programa Operacional Regional do Norte. This work was also supported by the projects AlleRiskAssess – PTDC/BAA-AGR/31720/2017 and NORTE-01-0145-FEDER-031720. Zita Avelar acknowledge the Foundation for Science and Technology (FCT) for its fellowship SFRH/BD/146347/2019info:eu-repo/semantics/publishedVersio

    Early phase of plasticity-related gene regulation and SRF dependent transcription in the hippocampus

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    Hippocampal organotypic cultures are a highly reliable in vitro model for studying neuroplasticity: in this paper, we analyze the early phase of the transcriptional response induced by a 20 \ub5M gabazine treatment (GabT), a GABA-Ar antagonist, by using Affymetrix oligonucleotide microarray, RT-PCR based time-course and chromatin-immuno-precipitation. The transcriptome profiling revealed that the pool of genes up-regulated by GabT, besides being strongly related to the regulation of growth and synaptic transmission, is also endowed with neuro-protective and pro-survival properties. By using RT-PCR, we quantified a time-course of the transient expression for 33 of the highest up-regulated genes, with an average sampling rate of 10 minutes and covering the time interval [10 3690] minutes. The cluster analysis of the time-course disclosed the existence of three different dynamical patterns, one of which proved, in a statistical analysis based on results from previous works, to be significantly related with SRF-dependent regulation (p-value<0.05). The chromatin immunoprecipitation (chip) assay confirmed the rich presence of working CArG boxes in the genes belonging to the latter dynamical pattern and therefore validated the statistical analysis. Furthermore, an in silico analysis of the promoters revealed the presence of additional conserved CArG boxes upstream of the genes Nr4a1 and Rgs2. The chip assay confirmed a significant SRF signal in the Nr4a1 CArG box but not in the Rgs2 CArG box

    Investigation of the incidence rate and geographical distribution of congenital hypothyroidism in the newborns in Ilam province by using geographic information system (GIS) between 2006 and 2016

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    Background and Aim: Congenital hypothyroidism is an endocrine disorder and is one of the main causes of mental retardation in the newborns. Genetic, environmental and geographical factors are associated with the disease. This study aimed to evaluate the incidence rate and correlation of geographical factors with congenital hypothyroidism in Ilam Province. Materials and Methods: This study was a descriptive analytical study and evaluated the incidence rate and geographical distribution of congenital hypothyroidism in the newborns in Ilam Province from the beginning of 2006 to the end of 2016. We studied the results of heel samples of the newborns between 3 to 5 days of age who had been screened for congenital hypothyroidism in the referral laboratories of the health centers of the health department of the Ilam University of Medical Sciences in all cities of Ilam Province. We used ArcGIS (ver 10.3) software for evaluation of geographical distribution. Statistical tests of Poisson regression and scatter plot were used to investigate the relationship between geographical factors and the incidence rate of congenital hypothyroidism. Data analysis was performed by use of SPSS 16 software. Results: Based on the findings of the screening of 106900 newborns born in Ilam Province, the incidence of congenital hypothyroidism in this study was 2.61 in 1000 live births (2.7 male newborns / 1000 live births, and 2.48 female newborns / 1000 live births). Among all the patients 55.4 were male and 44.6 were female. There was a significant correlation between the mean annual rainfall and herbal coverage with congenital hypothyroidism (p0.05). Conclusion: Based on the findings of this study, incidence of congenital hypothyroidism is high in Ilam Province. Abdanan and Ilam cities had the highest incidence rates of hypothyroidism and are among the high risk hotspots of the disease. As a result, authorities should take appropriate measures in order to control and reduce the incidence of this disease in the province. Also, among the geographical factors, the mean annual rainfall, herbal coverage and sunlight were associated with congenital hypothyroidism. © 2019 the Author (s)
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