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42 results for “Immunohistochemistry”
Effects of low-dose oxygen ions and protons on cardiac function and structure in male C57BL/6J mice (western blot, histology, and immunohistochemistry)
Purpose: Astronauts traveling beyond low Earth orbit will be exposed to high linear energy transfer charged particles. Because there is concern about the adverse effects of space radiation on the cardiovascular system, this study assessed cardiac function and structure and immune cell infiltration in a mouse model of charged particle irradiation. Materials and methods: Male C57BL/6 J mice were exposed to oxygen ions (16O, 600 MeV/n at 0.25 to 0.26 Gy/min to a total dose of 0, 0.05, 0.1, 0.25, or 1 Gy), protons (150 MeV, 0.35 to 0.55 Gy/min to 0, 0.5, or 1 Gy), or protons (150 MeV, 0.5 Gy) followed by 16O (600 MeV/n, 0.1 Gy). Separate groups of mice received 137Cs γ rays (1 Gy/min to 0, 0.5, 1, or 3 Gy) as a reference. Cardiac function and blood velocity were measured with ultrasonography at 3, 5, 7, and 9 months after irradiation. At 2 weeks, 3 months, and 9 months, cardiac tissue was collected to assess apoptosis, tissue remodeling, and markers of immune cells. Results: Ejection fraction and fractional shortening decreased at 3 and 7 months after 16O. These parameters did not change in mice exposed to γ rays, protons, or protons followed by 16O. Each of the radiation exposures caused only small increases in cleaved caspase3 and numbers of apoptotic nuclei. Changes in the levels of α smooth muscle cell actin and a 75kDa peptide of collagen type III in the left ventricle suggested tissue remodeling, but there was no significant change in total collagen deposition at 2 weeks, 3 months, and 9 months. Increases in protein amounts of cluster of differentiation (CD)2, CD68, and CD45 as measured with immunoblots at 2 weeks, 3 months, and 9 months after exposure to protons or 16O alone suggested immune cell infiltration. For type III collagen, CD2 and CD68, the efficacy in inducing protein abundance of CD2, CD68, and CD45 was 16O greater than protons was greater than γ rays greater than protons followed by 16O. Conclusions: Low dose, high energy charged particle irradiation caused mild changes in cardiac function and tissue remodeling in the mouse. This dataset derives result from the western blot, histology, and immunohistochemistry assays.
Glycome profiling and immunohistochemistry uncover changes in cell walls of Arabidopsis thaliana roots during spaceflight: Advanced Plant EXperiment (APEX) 03-1 Raw Dataset
This study was conducted to uncover the underlying molecular mechanisms by which microgravity impacts cell wall architecture in the model plant Arabidopsis thaliana using the Vegetable Production System (Veggie) housed on the International Space Station (ISS). Based on our previous space flight studies using the Biological Research in Canisters (BRIC) hardware on the STS-131 Space Shuttle mission, we found that plants respond to microgravity in large part through the transcriptional reprogramming of genes that control cell wall remodeling. This follow-up spaceflight experiment called the Advanced Plant EXperiments (APEX 03-1) in Space was designed to use Veggie unit on the ISS and on the ground unit on the Space Station Processing Facility (SSPF) to probe deeper into spaceflight-induced cell wall associated transcript expression changes. In this study we used RNA-Seq in combination with glycome profiling (glycomics) to correlate spaceflight-induced gene expression changes with actual cell wall modifications within seedlings.
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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.