• Santana Edmondson posted an update 2 days, 3 hours ago

    SUBTRwMNPO has higher attenuation rate for the datasets where SUBTR leaves cardiac residual. CONCLUSIONS SUBTRwMNPO is successful in removing cardiac interference regardless of the orientation of fMCG and fMEG signal spaces. It can also be used to remove cardiac interference when there is no prior knowledge of fetal head location. Enteric viruses including hepatitis E virus (HEV), human norovirus (HuNV), and rotavirus are causing global health issues. The host interferon (IFN) response constitutes the first-line defense against viral infections. Melanoma Differentiation-Associated protein 5 (MDA5) is an important cytoplasmic receptor sensing viral infection to trigger IFN production, and on the other hand it is also an IFN-stimulated gene (ISG). In this study, we investigated the effects and mode-of-action of MDA5 on the infection of enteric viruses. We found that MDA5 potently inhibited HEV, HuNV and rotavirus replication in multiple cell models. Overexpression of MDA5 induced transcription of important antiviral ISGs through IFN-like response, without triggering of functional IFN production. Interestingly, MDA5 activates the expression and phosphorylation of STAT1, which is a central component of the JAK-STAT cascade and a hallmark of antiviral IFN response. However, genetic silencing of STAT1 or pharmacological inhibition of the JAK-STAT cascade only partially attenuated the induction of ISG transcription and the antiviral function of MDA5. Thus, we have demonstrated that MDA5 effectively inhibits HEV, HuNV and rotavirus replication through provoking a non-canonical IFN-like response, which is partially dependent on JAK-STAT cascade. Hepatitis C virus (HCV) is a leading cause of chronic hepatitis and end-stage liver diseases. Mature HCV virions are bound by host-derived lipoproteins. Lack of an HCV vaccine warrants a major role of antiviral treatment in the global elimination of hepatitis C. Although direct-acting antivirals (DAAs) are replacing the interferon-based treatment and have dramatically improved the cure rate, the presence of viral variants resistant to DAAs, HCV genotype/subtype-specific efficacy, and high cost of DAAs argue novel and affordable regimens. In this study, we identified the antiviral effects of long-chain fatty acyl-coenzyme A (LCFA-CoA) against the infections of HCV genotypes 1-6 through targeting mature HCV-bound lipoproteins, suggesting novel mechanism(s) of antiviral different from those used by host-targeting agents or DAAs. We found that the antiviral activity of LCFA-CoA relied on the long-chain saturated fatty acid and the CoA group, and was enhanced when combined with pegylated-interferon or DAAs. Importantly, we demonstrated that LCFA-CoA efficiently inhibited the infection of HCV variants carrying DAA-resistant mutations. The mechanistic study revealed that LCFA-CoA specifically abolished the attachment and binding steps and also inhibited the cell-to-cell viral transmission. LCFA-CoA targeted mature HCV-bound lipoproteins, but not apolipoproteins B or E. In addition, LCFA-CoA could also inhibit the infection of the dengue virus. Our findings suggest that LCFA-CoA could potentially serve as a supplement HCV therapy, particularly for the DAA-resistant HCV variants. Taken together, LCFA-CoA may be further developed to be a novel class of antivirals with mechanism(s), different from host-targeting agents or DAAs, of targeting the components associated with mature HCV virions. In 2019, a new coronavirus (2019-nCoV) infecting Humans has emerged in Wuhan, China. Its genome has been sequenced and the genomic information promptly released. Despite a high similarity with the genome sequence of SARS-CoV and SARS-like CoVs, we identified a peculiar furin-like cleavage site in the Spike protein of the 2019-nCoV, lacking in the other SARS-like CoVs. In this article, we discuss the possible functional consequences of this cleavage site in the viral cycle, pathogenicity and its potential implication in the development of antivirals. OBJECTIVES The role played by macrophages in regulating the differentiation of mesenchymal stem cells (MSCs) during wound healing and bone regeneration is increasingly being recognized. click here The present study compared the pro-osteogenic effects of three co-culture methods, conditioned medium generated by macrophages (CM), indirect culture (IC) or direct culture (DC) with macrophages, on bone marrow MSCs (BMMSCs). METHODS Primary BMMSCs were isolated, characterized and co-cultured with RAW264.7 mouse macrophages. Cell morphology and intracellular reactive oxygen species (ROS) levels were determined by scanning electron microscopy (SEM) and flow cytometry, respectively. Alkaline phosphatase (ALP) staining and assay, Alizarin red staining (ARS) and quantitative real-time polymerase chain reaction (qRT-PCR) were performed to evaluate osteogenic differentiation. RESULTS Inclusion of macrophages in any of the three co-culture methods resulted in improvement in osteogenic differentiation and mineralization of BMMSCs (DC > IC > CM), as measured by ALP staining and activity, ARS and osteoblastic gene expression (Runx2, Alp, Ocn and Bmp2). The enhanced osteogenesis was reversed with hydrogen peroxide. Macrophages reduced the increased levels of intracellular ROS generated by BMMSCs during osteogenic differentiation in a manner similar to the use of an antioxidant, N-acetyl cysteine. CONCLUSIONS Macrophages exert an osteogenesis-enhancing effect to accelerate BMMSC osteogenesis via ROS downregulation. CLINICAL SIGNIFICANCE The present findings suggest that targeting MSC-macrophage interaction is an effective strategy for regulating stem cell fate and facilitating bone regeneration. Published by Elsevier Ltd.BACKGROUND Common variable immunodeficiency (CVID) is a disorder characterized by antibody deficiency. A significant fraction of the patients suffers from immune dysregulation, that leads to increased morbidity and mortality. The pathogenesis of this condition is poorly understood. OBJECTIVE To find out if the plasma protein signature in CVID is associated with clinical characteristics and lymphocyte aberrations. METHODS A highly sensitive proximity extension assay was used for targeted profiling of 145 plasma proteins in 29 patients with CVID. Phenotyping of peripheral lymphocytes was done by flow cytometry. The findings were correlated to the burden of immune dysregulation. RESULTS Unsupervised clustering of plasma protein profiles identified two distinct groups of CVID patients that differed significantly in the degree of complications due to immune dysregulation and in the frequency of activated B- and T-cell subpopulations. Pathway analysis identified interferon-γ and interleukin (IL)-1β as top enriched upstream regulators associated with higher grade of immune dysregulation.