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886 results for “immune infection”
Ontogeny of immunity and potential implications for co-infection
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Data from: Immune stability predicts tuberculosis infection risk in a wild mammal
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Data from: Livestock abundance predicts vampire bat demography, immune profiles, and bacterial infection risk
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Data from: Bartonella infections are prevalent in rodents despite efficient immune responses
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Macronutrients modulate survival to infection and immunity in Drosophila
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Prior exposure to long day photoperiods alters immune responses and increases susceptibility to parasitic infection in stickleback
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Selection for increased post-infection survival ameliorates mating induced immune suppression in Drosophila melanogaster females
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Pregnancy and lactation induce distinct immune responses to COVID-19 booster vaccination and SARS-CoV-2 breakthrough infection
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Does a biological invasion modify host immune responses to parasite infection?
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The genetics of immune and infection phenotypes in wild mice, Mus musculus domesticus
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Data from: Host immunity, nutrition and coinfection alter longitudinal infection patterns of schistosomes in a free ranging African buffalo population
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Data from: Single cell RNA-seq analysis reveals that prenatal arsenic exposure results in long-term, adverse effects on immune gene expression in response to Influenza A infection
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Data from: A biological invasion modifies host immune responses to parasite infection
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Mass spectrometry data from: Deficiency in Galectin-3, -8, and -9 impairs immunity to chronic Mycobacterium tuberculosis infection but not acute infection with multiple intracellular pathogens
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Ecological factors mediate immunity and parasitic co-infection in sea fan octocorals
<p>The interplay among environment, demography, and host-parasite interactions is a challenging frontier. In the ocean, fundamental changes are occurring due to anthropogenic pressures, including increased disease outbreaks on coral reefs. These outbreaks often include multiple parasites, calling into question how coral immunity functions in this complex milieu. Corals provide an interesting model to study ecological immunity during co-infection, being highly sensitive to environmental change, susceptible to many diseases, and defended by the innate immune system. Our work investigates the interplay of factors influencing coral co-infection using metrics of the innate immune response: levels of cellular immunity and the expression of candidate immune genes. We used existing copepod infections and live pathogen inoculation with <i>Aspergillus</i> fungus to test the effect of sequential co-infections in a laboratory experiment. We profile significant increases in the expression of the immune recognition gene Tachylectin 5A in response to both of these naturally occurring parasites of the Caribbean sea fan octocoral, <i>Gorgonia ventalina</i>. Cellular immunity increased significantly by 8.16% in copepod infections compared to controls and single <i>Aspergillus</i> infections. We evaluated immunity in reef populations and again detected activation of cellular immunity, with a 13.6% increase in copepod infections and no detectable increase in fungal infections. Thus, cellular immunity measured in the field and lab were similar, increasing with copepod infections and not <i>Aspergillus</i>. We found random co-occurrence of copepods and fungus across 15 reefs in Puerto Rico, suggesting other factors prevail in structuring parasite infection. Sea fan colony size strongly predicted infection by the copepod parasite. Moreover, the effect of parasitic infection on immunity was small relative to the explanatory power of site differences and coral cover, and roughly equivalent to the effect of reproductive status. We suggest that host size, reproductive status, live coral cover, and site-specific factors have large effects on parasitic infections and host immunity that overwhelm effects of the parasites on each other. Thus, host size and site-specific features emerge as critical drivers in this multi-parasite system. Parsing the effects of immunity and ecological factors in coral co-infection shows how disease depends on more than one host and one parasite.</p>
Data from: The contribution of host cell-directed vs. parasite-directed immunity to the disease and dynamics of malaria infections
<p>Hosts defend themselves against pathogens by mounting an immune response. Fully understanding the immune response as a driver of host disease and pathogen evolution requires a quantitative account of its impact on parasite population dynamics. Here, we use a data-driven modeling approach to quantify the birth and death processes underlying the dynamics of infections of the rodent malaria parasite, <span>Plasmodium chabaudi</span>, and the red blood cells (RBCs) it targets. We decompose the immune response into 3 components, each with a distinct effect on parasite and RBC vital rates, and quantify the relative contribution of each component to host disease and parasite density. Our analysis suggest that these components are deployed in a coordinated fashion to realize distinct resource-directed defense strategies that complement the killing of parasitized cells. Early in the infection, the host deploys a strategy reminiscent of siege and scorched-earth tactics, in which it both destroys RBCs and restricts their supply. Late in the infection, a "juvenilization" strategy, in which turnover of RBCs is accelerated, allows the host to recover from anemia while holding parasite proliferation at bay. By quantifying the impact of immunity on both parasite fitness and host disease. we reveal that phenomena often interpreted as immunopathology may in fact be beneficial to the host. Finally, we show that, across mice, the components of the host response are consistently related to each other, even when infections take qualitatively different trajectories. This suggests the existence of simple rules that govern the immune system's deployment.</p>
Data from: Heterozygosity at neutral and immune loci is not associated with neonatal mortality due to microbial infection in Antarctic fur seals
Numerous studies have reported correlations between the heterozygosity of genetic markers and fitness. These heterozygosity fitness correlations (HFCs) play a central role in evolutionary and conservation biology, yet their mechanistic basis remains open to debate. For example, fitness associations have been widely reported at both neutral and functional loci, yet few studies have directly compared the two, making it difficult to gauge the relative contributions of genome-wide inbreeding and functional genetic variation to fitness. Here, we compared the effects of neutral and immune gene heterozygosity on death from bacterial infection in Antarctic fur seal (Arctocephalus gazella) pups. We specifically developed a panel of 13 microsatellites from expressed immune genes and genotyped these together with 48 neutral loci in 234 individuals, comprising 39 pups that were classified at necropsy as having most likely died of bacterial infection together with a five times larger matched sample of healthy surviving pups. Identity disequilibrium quantified from the neutral markers was positive and significant, indicative of variance in inbreeding within the study population. However, multilocus heterozygosity did not differ significantly between healthy and infected pups at either class of marker, and little evidence was found for fitness associations at individual loci. These results support a previous study of Antarctic fur seals that found no effects of heterozygosity at nine neutral microsatellites on neonatal survival, and thereby help to refine our understanding of how HFCs vary across the life cycle. Given that non-significant HFCs are underreported in the literature, we also hope that our study will contribute towards a more balanced understanding of the wider importance of this phenomenon.
Dataset for: Altered thermal preferences of infected or immune-challenged Aedes aegypti and Ae. japonicus mosquitoes
<p>Dataset for: Altered thermal preferences of infected or immune-challenged Aedes aegypti and Ae. japonicus mosquitoes</p>
Serial seroprevalence study: follow-up of immunity to SARS-Cov-2 infection and monitoring of effective vaccination coverage, in three Chilean cities
<p>Population-based serosurvey in Santiago, Talca, and Coquimbo–La Serena </p>
Neutralizing immunity in vaccine breakthrough infections from the SARS-CoV-2 Omicron and Delta variants
<p>Scripts and metadata used in the analysis of the manuscript, <em>Neutralizing immunity in vaccine breakthrough infections from the SARS-CoV-2 Omicron and Delta variants.</em></p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.