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Total-body irradiation dose response

ABSTRACT: Duplicate hybridizations with fluorochrome switching were performed following the first two fractions of total body irradiation for accumulated doses of 1.5 Gy and 3.0 Gy. Control samples for all hybridizations were from the same patient before the beginning of treatment. Keywords: dose response

ORGANISM(S): Homo sapiens

PROVIDER: GSE1366 | GEO | 2004/06/17

SECONDARY ACCESSION(S): PRJNA90123

REPOSITORIES: GEO

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Total-body irradiation dose response

Project description:Duplicate hybridizations with fluorochrome switching were performed following the first two fractions of total body irradiation for accumulated doses of 1.5 Gy and 3.0 Gy. Control samples for all hybridizations were from the same patient before the beginning of treatment.

2010-06-09 | E-GEOD-1366 | biostudies-arrayexpress

Gene Expression Profiling in Non-Human Primate Ileum after Total-Body Irradiation

Project description:This is an experiment to study the effects of total body irradiation on intestinal gene expression. There are 24 male animals in the study; 4 controls, 10 animals received 6.7 Gy, 10 received 7.4 Gy. Animals were killed 4, 7 or 12 days after irradiation

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Gene Expression Profiling in Non-Human Primate Colon after Total-Body Irradiation

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Gene Expression Profiling in Non-Human Primate Jejunum after Total-Body Irradiation

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transcriptomic assay on embryos after barley seeds gamma_irradiation-Molecular mechanisms of growth stimulation after low-dose irradiation of barley seeds

Project description:4plex_barley_2017_01 - transcriptomic assay on embryos after barley seeds gamma_irradiation - Why radiation exposure on seeds at low doses causes stimulation of plant growth after germination? - Barley dry seeds of variety “Nur” were irradiated by gamma-rays (Co-60) at doses 20 Gy (stimulatory) and 100 Gy (inhibitory). Immediately after irradiation we put seeds for germination to Petri dishes containing water filter paper; embryos were taken 2h after irradiation, embryos with embrionic roots were taken 24 and 48h after irradiation. The following comparisons have been made: non-irradiated (0 Gy), 2h vs. 20 Gy, 2h; 0 Gy, 24h vs. 20 Gy, 24h; 0 Gy, 48h vs. 20 Gy, 48h; 0 Gy, 24h vs. 100 Gy, 24h. Three independent biological replicates were used.

2019-12-01 | GSE117356 | GEO

Immediate Transcriptional Changes in Response to High Dose Radiation Exposure

Project description:One of the most likely risks astronauts on long duration space missions face is exposure to ionizing radiation associated with highly energetic and charged heavy (HZE) particles. Since access to medical expertise on such a mission is limited at best, early diagnosis and mitigation of such exposure is critical. In order to accurately determine the dosage within 1 hour post-exposure, dose-dependent âbiomarkersâ are needed. Therefore, we performed a dose-course transcriptional analysis for radiation exposure at 0, 0.3, 1.5, and 3.0 Gy with corresponding time point at 1 hour (hr) post-exposure using AffymetrixÂ® GeneChipÂ® Human Gene 1.0 ST v1 Array chips. The analysis of our data suggests a set of sensitive genetic biomarkers specific to each radiation level as well as generic radiation response biomarkers. Upregulated biomarkers can then be used within lab-on-a-chip (LOC) systems to detect exposure to ionizing radiation. A total of sixteen human samples representing radiation exposure at levels 0 Gy, 0.3 Gy, 1.5 Gy and 3.0 Gy at time point 1 hour (hr) post-exposure were constructed. Blood samples were extracted from four human volunteers, and were irradiated. Leukocytes were extracted, and gene expression was measured. Samples for all four volunteers were measured at 1 hr for all four dose levels, resulting in four replicates at each dose level. Thus, a total of 4 samples at each of the four radiation levels were sampled, yielding the total of 16 samples.

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Proteomics on sera of mice following local high-dose heart irradiation

Project description:Background and Purpose: Cardiotoxicity is a well-known adverse effect of radiation therapy. Measurable abnormalities in the heart function indicate advanced and often irreversible heart damage. Therefore, early detection of cardiac toxicity is necessary to delay and alleviate the development of the disease. The present study investigated long-term serum proteome alterations following local heart irradiation using a mouse model with the aim to detect biomarkers of radiation-induced cardiac toxicity. Materials and Methods: Serum samples from C57BL/6J mice were collected 20 weeks after local heart irradiation with 8 Gy or 16 Gy X-ray; the controls were sham-irradiated. The samples were analyzed by quantitative proteomics based on data-independent acquisition mass spectrometry. The proteomics data were further investigated using bioinformatics and ELISA. Results: The analysis showed radiation-induced changes in the level of several serum proteins involved in the acute phase response, inflammation and cholesterol metabolism. We found significantly enhanced expression of pro-inflammatory cytokines (TNF-, TGF-, IL-1 and IL-6) in the serum of the irradiated mice. The level of free fatty acids, total cholesterol, low density lipoprotein (LDL) and oxidized LDL was increased whereas that of high density lipoprotein was decreased by irradiation. Conclusions: This study provides information on systemic effects of heart irradiation. It elucidates a radiation fingerprint in the serum that may be used to elucidate adverse cardiac effects after radiation therapy.

2021-09-10 | PXD024446 | Pride

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2010-07-01 | E-GEOD-4151 | biostudies-arrayexpress

NHP gene expression after 4 Gy total body irradiation.

Project description:NHP gene expression after 4 Gy total body irradiation.

| PRJNA451211 | ENA

NHP gene expression after 4 Gy total body irradiation.

Project description:In the current study, we investigated the gene expression response of blood cells of non-human primates that were total body irradiated with a 4 Gy dose. We isolated total RNA from peripheral blood at 3 days before irradiation, and then from the same animals on days 3, 5 and 7 days after irradiation. Using Agilent Rhesus microarrays, we identified genes that were significantly differentially expressed across the 7-day time course of this study. We identified common biological functions affected that persisted across the 7-day study.

2023-03-29 | GSE113478 | GEO

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