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499 results on '"Mesquita J"'

1. Crenosoma striatum in lungs of European hedgehogs (Erinaceus europeus) from Portugal

Author

Barradas P. F., Flores A. R., Mateus T. L., Carvalho F., Gärtner F., Amorim I., and Mesquita J. R.

Subjects
crenosoma striatum, hedgehog, lungworm, nematode, Microbiology, QR1-502
Abstract

Crenosoma striatum is a host-specifi c metastrongiloid nematode causing respiratory tract disease in hedgehogs (Erinaceus europaeus). Since few studies have reported C. striatum in hedgehogs and little genetic data is available concerning this lungworm, this study aimed to determine the occurrence of C. striatum in a population sample of hedgehogs from Portugal, additionally providing morphological, histological and molecular data. From 2017 to 2018 a survey of infection was carried out in 11 necropsied hedgehogs. Worms were extracted from fresh lung tissues and microscopically evaluated. Molecular characterization of partial mitochondrial (12S rRNA) and nuclear (18S rRNA) genes was performed. The presence of lungworms in pulmonary tissues of five hedgehogs (45.5%) was detected. Morphological and histopathological analyses evidenced adult forms of nematodes consistent with C. striatum. Molecular characterization of 18S rRNA genes confirmed the classifi cation as C. striatum. Also, novel genetic data characterizing the mitochondrial (12S rRNA) gene of C. striatum is presented.

Published
2020
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19. 5GZORRO_D4.1: Design of Zero Touch Service Management with Security & Trust Solutions

Author

J. M. Jorquera Valero, P. M. Sánchez Sánchez, M. Gil Pérez, G. Martínez Pérez, P. Diogo, P. Martins, F. Bravo Díaz, A. Ramos, J. Bonnet, M. Mesquita, J. Fernández, C. Herranz Claveras, A. Fernández-Fernández, M. S. Siddiqui, L. A. Ochoa, C. Rodríguez Cerro, D. R. López, D. Breitgand, K. Barabash, P. G. Giardina, J. Brenes, E. Bucchianeri, G. Carrozzo, A. Lekidis, V. Theodorou, R. Behravesh

Abstract

This document details the architecture of a trustworthy and intelligent network slice management mechanism for building secure cross-domain slices and services. Taking Figure 1‑1 as 5GZORRO reference architecture, this report encloses security and trust across multiple domains and cross-domain intelligent network slice & service management., EC approval: 08/10/2021

Published
2021
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26. Airborne spread of infectious SARS-CoV-2 : Moving forward using lessons from SARS-CoV and MERS-CoV

Author

da Silva, P. G., Nascimento, M. S. J., Soares, Ruben R. G., Sousa, S. I. V., Mesquita, J. R., da Silva, P. G., Nascimento, M. S. J., Soares, Ruben R. G., Sousa, S. I. V., and Mesquita, J. R.

Abstract

Background: Although an increasing body of data reports the detection of SARS-CoV-2 RNA in air, this does not correlate to the presence of infectious viruses, thus not evaluating the risk for airborne COVID-19. Hence there is a marked knowledge gap that requires urgent attention. Therefore, in this systematic review, viability/stability of airborne SARS-CoV-2, SARS-CoV and MERS-CoV viruses is discussed. Methods: A systematic literature review was performed on PubMed/MEDLINE, Web of Science and Scopus to assess the stability and viability of SARS-CoV, MERS-CoV and SARS-CoV-2 on air samples. Results and discussion: The initial search identified 27 articles. Following screening of titles and abstracts and removing duplicates, 11 articles were considered relevant. Temperatures ranging from 20 °C to 25 °C and relative humidity ranging from 40% to 50% were reported to have a protective effect on viral viability for airborne SARS-CoV and MERS-CoV. As no data is yet available on the conditions influencing viability for airborne SARS-CoV-2, and given the genetic similarity to SARS-CoV and MERS-CoV, one could extrapolate that the same conditions would apply. Nonetheless, the effect of these conditions seems to be residual considering the increasing number of cases in the south of USA, Brazil and India, where high temperatures and humidities have been observed. Conclusion: Higher temperatures and high relative humidity can have a modest effect on SARS-CoV-2 viability in the environment, as reported in previous studies to this date. However, these studies are experimental, and do not support the fact that the virus has efficiently spread in the tropical regions of the globe, with other transmission routes such as the contact and droplet ones probably being responsible for the majority of cases reported in these regions, along with other factors such as human mobility patterns and contact rates. Further studies are needed to investigate the extent of aerosol transmission of SARS, QC 20210309

Published
2021
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