Search results for "uno"
showing 10 items of 14944 documents
Kuvitteellisten ratkaisujen runoutta
2020
An Overview of Asthma and COVID-19: Protective Factors Against SARS-COV-2 in Pediatric Patients.
2021
Coronavirus disease 2019 (COVID-19) is a pandemic infectious disease caused by severe acute respiratory syndrome coronavirus SARS-COV-2. Aberrant innate immunity response and cytokine storm are responsible for the syndrome. Apparently, in asthmatic patients, the inadequate antiviral immune response and the tendency for asthma exacerbation evoked by common respiratory viruses could explain increased susceptibility to SARS-COV-2 infection. However, asthma has not been suggested to be a risk factor in COVID-19 patients. Therefore, in asthmatic patients some potential protective mechanisms against SARS-COV-2 have been hypothesized, like type 2 immune response, number of eosinophils, overproduct…
RAB18 Loss Interferes With Lipid Droplet Catabolism and Provokes Autophagy Network Adaptations
2020
Autophagy is dependent on appropriate lipid supply for autophagosome formation. The regulation of lipid acquisition and the autophagy network response to lipid-limiting conditions are mostly elusive. Here, we show that the knockout of the RAB GTPase RAB18 interferes with lipid droplet catabolism, causing an impaired fatty acid release. The resulting reduced lipid-droplet-derived lipid availability influences autophagy and provokes adaptive modifications of the autophagy network. These adjustments include increased expression and phosphorylation of ATG2B as well as augmented formation of the ATG12-ATG5 conjugate. Moreover, ATG9A shows an enhanced phosphorylation at amino acid residues tyrosi…
La participación española en los programas de la OMS para el control de la rabia (1952-1975)
2017
S'analitza la participació espanyola en la investigació duta a terme per l'Organització Mundial de la Salut (OMS) per a obtenir un sèrum estàndard internacional contra la ràbia, en la qual va intervenir el laboratori del Servei de Virus de l'Escola Nacional de Sanitat de Madrid, així com la labor de Florencio Pérez Gallardo, director d'aquest, com a membre del Comité d'Experts de l'OMS sobre la ràbia. .//. Se analiza la participación española en la investigación llevada a cabo por la Organización Mundial de la Salud (OMS) para obtener un suero estándar internacional contra la rabia, en la que intervino el laboratorio del Servicio de Virus de la Escuela Nacional de Sanidad de Madrid, así com…
Louis Pasteur y la vacunación antirrábica
1994
Estudi sobre la figura de Louis Pasteur (1822–1895) i del procés que va portar al descobriment i aplicació de la vacuna antiràbica. També analitza el debat que va produir al voltant d'aquesta vacunació. //. Estudio sobre la figura de Louis Pasteur (1822–1895) y del proceso que llevó al descubrimiento y aplicación de la vacuna antirrábica. También analiza el debate que produjo alrededor de esta vacunación
La prevención de la rabia y la sanidad municipal en Valencia (1894-1916)
1998
Se estudia la introducción de la vacunación antirrábica en Valencia tras su descubrimiento por Pasteur en 1885. La investigación se ha realizado a partir de documentación de archivo y de prensa médica de la época. Su aplicación se enmarca dentro de la «medicina de laboratorio», mayoritariamente seguida por los integrantes del Cuerpo Municipal de Sanidad del Ayuntamiento valenciano y que permitió una estrecha relación con los laboratorios españoles y extranjeros situados en ese momento a la cabeza de la investigación bacteriológica.
Inhibition of Rac1 signaling by lovastatin protects against anthracycline-induced cardiac toxicity
2011
Normal tissue damage limits the efficacy of anticancer therapy. For anthracyclines, the clinically most relevant adverse effect is cardiotoxicity. The mechanisms involved are poorly understood and putative cardioprotectants are controversially discussed. Here, we show that the lipid-lowering drug lovastatin protects rat H9c2 cardiomyoblasts from doxorubicin in vitro. Protection by lovastatin is related to inhibition of the Ras-homologous GTPase Rac1. It rests on a reduced formation of DNA double-strand breaks, resulting from the inhibition of topoisomerase II by doxorubicin. Doxorubicin transport and reactive oxygen species are not involved. Protection by lovastatin was confirmed in vivo. I…
Activation of NF-kappaB and IL-8 by yersinia enterocolitica invasin protein is conferred by engagement of rac1 and MAP kinase cascades.
2003
International audience; Yersinia enterocolitica triggers activation of the nuclear factor (NF)-kappaB and production of the proinflammatory chemokine interleukin (IL)-8 in intestinal epithelial cells. This activation is due to adhesion of the bacteria via their outer membrane protein invasin to the host cells. Using Clostridium difficile toxins that specifically inactivate small GTPases, and transfection of inhibitory proteins of the Rho-GTPases, we demonstrate that Rac1, but not Cdc42 or Rho, is required for activation of NF-kappaB by invasin. Invasin activated the mitogen activated protein kinases (MAPK) p38 and c-Jun N-terminal protein kinase (JNK) but not extracellular signal regulated …
Rac1 protein signaling is required for DNA damage response stimulated by topoisomerase II poisons.
2012
To investigate the potency of the topoisomerase II (topo II) poisons doxorubicin and etoposide to stimulate the DNA damage response (DDR), S139 phosphorylation of histone H2AX (γH2AX) was analyzed using rat cardiomyoblast cells (H9c2). Etoposide caused a dose-dependent increase in the γH2AX level as shown by Western blotting. By contrast, the doxorubicin response was bell-shaped with high doses failing to increase H2AX phosphorylation. Identical results were obtained by immunohistochemical analysis of γH2AX focus formation, comet assay-based DNA strand break analysis, and measuring the formation of the topo II-DNA cleavable complex. At low dose, doxorubicin activated ataxia telangiectasia m…