Respiratory viruses
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA639353 | ENA |
REPOSITORIES: ENA
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Project description:Febrile patients PCR positive for H1N1 swine flu, seasonal H1N1 and seasonal H3N2 in nasal swabs and controls consisting of febrile patients with rhinovirus infection or febrile patients of non-viral etiology (nasal swabs PCR negative for common respiratory viruses and blood PCR negative for dengue and parvovirus B19) were assessed consecutively for global transcriptional changes in whole blood
2014-04-01 | GSE29385 | GEO
Project description:All respiratory viruses establish primary infections in the nasal epithelium, where efficient innate immune induction may prevent dissemination to the lower airway and thus minimize pathogenesis. Human coronaviruses (HCoVs) cause a range of pathologies, but the host and viral determinants of disease during common cold versus lethal HCoV infections are poorly understood. We model the initial site of infection using primary nasal epithelial cells cultured at air-liquid interface (ALI). HCoV-229E, HCoV-NL63 and human rhinovirus-16 are common cold-associated viruses that exhibit unique features in this model: early induction of antiviral interferon (IFN) signaling, IFN-mediated viral clearance, and preferential replication at nasal airway temperature (33ºC) which confers muted host IFN responses. In contrast, lethal SARS-CoV-2 and MERS-CoV encode antagonist proteins that prevent IFN-mediated clearance in nasal cultures. Our study identifies features shared among common cold-associated viruses, highlighting nasal innate immune responses as predictive of infection outcomes and nasally-directed IFNs as potential therapeutics.
2024-03-25 | GSE253542 | GEO
Project description:Febrile patients PCR positive for H1N1 swine flu, seasonal H1N1 and seasonal H3N2 in nasal swabs and controls consisting of febrile patients with rhinovirus infection or febrile patients of non-viral etiology (nasal swabs PCR negative for common respiratory viruses and blood PCR negative for dengue and parvovirus B19) were assessed consecutively for global transcriptional changes in whole blood Peripheral whole blood collected in PAX-gene tubes and extracted for total RNA
2014-04-01 | E-GEOD-29385 | biostudies-arrayexpress
Project description:The determinants of influenza transmission remain poorly understood. Swine influenza viruses preferentially attach to receptors found in the upper airways; however, most swine influenza viruses fail to transmit efficiently from swine to humans, and from human-to-human. The pandemic 2009 H1N1 (H1N1pdm) virus was a rare exception of a swine virus that acquired efficient transmissibility from human-to-human, and is reflected in efficient respiratory droplet transmission in ferrets. We hypothesize that virus-induced host responses in the upper airways correlate with airborne transmission in ferrets. To address this question, we used the H1N1pdm virus and swine influenza A/swine/Hong Kong/201/2010 (HK201) virus that has comparable titre in the ferret nasopharynx, but it exhibits differential transmissibility in ferrets via respiratory droplet route. We performed a transcriptomic analysis of tissues from the upper and lower respiratory tract from ferrets infected with either H1N1pdm or HK201 viruses using ferret-specific Agilent oligonucleotide arrays. We found differences in the kinetics of the innate immune response elicited by these two viruses that varied across tissues.
2017-03-31 | GSE79282 | GEO
Project description:Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) and other respiratory viruses -Coronavirus OC43, Coronavirus 229E, Influenza A/H1N1, Influenza A/H3N2, Influenza B, Respiratory Syncytial Virus RSV A and RSV B - were analysed by bottom-up proteomics of viral cultures. High coverage of viral proteins was acheived after culturing in serum-free conditions when compared to cultures grown using standard conditions including 2% fetal bovine serum.
2022-10-13 | PXD028562 | Pride
Project description:Viral respiratory infections are an important public health concern, due to their prevalence, transmissibility, and potential to cause serious disease. Disease severity is the product of several factors beyond the presence of the infectious agent, including specific host immune responses, host genetic makeup and bacterial co-infections. To understand these interactions within natural infections we designed a longitudinal cohort study actively surveilling 18 different respiratory viruses over the course of 19 months (2016-2018) in Manhattan, New York City. The cohort includes individuals related to daycare facilities, high school students and health care workers. We retrieved weekly epidemiological and clinical data and collected over 4,000 nasal swabs for molecular characterization from 214 participants. Transcriptomic data enabled the characterization of specific markers of immune response, the identification of signatures associated with symptom severity and bacterial co-infections. We created a computational resource to facilitate access to the data and visualization of analytical results.
2023-01-30 | GSE223679 | GEO
Project description:The severity and outcome of respiratory viral infections is partially determined by the cellular response mounted by infected lung epithelial cells. Disease prevention and treatment is dependent on our understanding of the shared and unique responses elicited by diverse viruses. We used microarray analysis to compare changes in gene expression of murine lung epithelial cells infected by one of three respiratory viruses causing mild (rhinovirus, RV1B), moderate (coronavirus, MHV-1), and severe (influenza A virus, PR8) disease in mice. The viruses prompted changes in host gene expression that differed in magnitude and timing. RV1B infection caused numerous gene expression changes, but the differential effect peaked at 12 hours post-infection. PR8 altered an intermediate number of genes whose expression continued to changes through 24 hours. MHV-1 had comparatively few effects on host gene expression. All three viruses elicited overlapping responses in antiviral defense systems, though MHV-1 induced a lower type I IFN response than the other two viruses. Our comparative approach identified signatures of each virus infection that can be used to discover mechanisms of pathogenesis in the respiratory tract.
2016-10-26 | GSE89190 | GEO
Project description:BACKGROUND: Infections with community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) are emerging worldwide. We investigated an outbreak of severe CA-MRSA infections in children following out-patient vaccination. METHODS AND FINDINGS: We carried out a field investigation after adverse events following immunization (AEFI) were reported. We reviewed the clinical data from all cases. S. aureus recovered from skin infections and from nasal and throat swabs were analyzed by pulse-field gel electrophoresis, multi locus sequence typing, PCR and microarray. In May 2006, nine children presented with AEFI, ranging from fatal toxic shock syndrome, necrotizing soft tissue infection, purulent abscesses, to fever with rash. All had received a vaccination injection in different health centres in one District of Ho Chi Minh City. Eight children had been vaccinated by the same health care worker (HCW). Deficiencies in vaccine quality, storage practices, or preparation and delivery were not found. Infection control practices were insufficient. CA-MRSA was cultured in four children and from nasal and throat swabs from the HCW. Strains from children and HCW were indistinguishable. All carried the Panton-Valentine leukocidine (PVL), the staphylococcal enterotoxin B gene, the gene complex for staphylococcal-cassette-chromosome mec type V, and were sequence type 59. Strain HCM3A is epidemiologically unrelated to a strain of ST59 prevalent in the USA, although they belong to the same lineage. CONCLUSIONS: We describe an outbreak of infections with CA-MRSA in children, transmitted by an asymptomatic colonized HCW during immunization injection. Consistent adherence to injection practice guidelines is needed to prevent CA-MRSA transmission in both in- and outpatient settings. Data is also available from http://bugs.sgul.ac.uk/E-BUGS-45
2009-01-16 | E-BUGS-45 | biostudies-arrayexpress
Project description:Macrophages have a pivotal role during viral infections in pigs. By expressing cell surface receptors, macrophages become viral targets and reservoirs. In the case of upper respiratory tract infections, many viruses target the peripheral nasal mucosa. Recent in vivo and in vitro (primary nasal cell cultures) porcine reproductive and respiratory syndrome virus (PRRSV) studies demonstrated that several macrophage subsets exist in the porcine nasal mucosa, and that virus strains with different virulence showed altered tropism for these different macrophage populations. To further investigate these macrophage subsets, total RNA sequencing was performed in parallel on two subsets from the nasal mucosa and lung macrophages. Macrophages were isolated by either fluorescent activated cell sorting (FACS; cf. bulk RNAseq) or laser capture microdissection (LCM; cf. LCM RNAseq) in combination with immunofluorescence staining against two macrophage markers, CD163 and Sialoadhesin (Sn). With both RNAseq methods, nasal macrophages showed a different transcriptomic profile compared to lung macrophages. Differentially expressed genes were identified in the two subsets of nasal macrophages. Gene set enrichment analysis on the three macrophage populations showed that GO terms and KEGG pathways on LCM RNAseq data were more specific to the spatial location of macrophage subsets than bulk RNAseq data. Cell type signature analysis revealed that nasal CD163+Sn- cells resemble squamous epithelial cells (LCM RNAseq) or antigen presenting cells (bulk RNAseq) while nasal CD163+Sn+ cells are more like fibroblasts/stromal cells (LCM RNAseq) or vascular endothelial cell (bulk RNAseq). Our results confirmed that not only macrophages in different tissues but also macrophages in different areas within the same tissue have different transcriptional programs, suggesting their differential roles in their interaction with pathogens and corresponding immune responses.
2023-09-29 | E-MTAB-12120 | biostudies-arrayexpress