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Identifying Non-Invasive Molecular Correlates relevant to Irradiation-Skin Burn Combined Injuries

ABSTRACT: Currently there is growing concern with respect to scenarios where people are likely to be presented with radiation exposure along with many kinds of other injuries such as trauma and infection. The potential for such scenarios was brought to reality with the events and aftermath of the Fukushima nuclear disaster in Japan. As such medical complications arising from such exposures would be poorly dealt with as no evidence-based guidelines exist for their rehabilitation or recovery. Our research intends to differentially characterize combined radiation and burn injuries and identify novel pathways and biomarkers. Such findings will lead to better medical practices in the diagnosis, care and rehabilitation of affected individuals. The study includes four groups of mice: 1) Control sham mice group (n=4), 2) Skin burn injury mice group (n=6), 3) Radiation injury mice group (n=6), 4) Combined radiation and burn injury mice group (n=6).

ORGANISM(S): synthetic construct Mus musculus

PROVIDER: GSE66739 | GEO | 2015/05/15

SECONDARY ACCESSION(S): PRJNA277841

REPOSITORIES: GEO

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Project description:Globally, burns are a significant cause of injury that can cause substantial acute trauma as well as lead to increased incidence of chronic co-morbidity and disease. To date, research has primarily focused on the systemic response severe injury, with little in the literature reported on impact of non-severe injuries (<15% total burn surface area; TBSA). To elucidate the metabolic consequences of non-severe burn injury, longitudinal plasma was collected from adults (n=35) who presented at hospital with a non-severe burn injury at admission, and at 6 week follow up. A cross-sectional baseline sample was also collected from non-burn control participants (n=14). Samples underwent multiplatform metabolic phenotyping using 1H nuclear magnetic resonance spectroscopy and liquid chromatography-mass spectrometry to quantify 112 lipoprotein and glycoproteins signatures and 852 lipid species from across 20 subclasses. Multivariate data modelling (Orthogonal projection to latent structures-discriminate analysis) revealed alterations in lipoprotein and lipid metabolism when comparing baseline control to hospital admission samples, with the phenotypic signature found to be sustained at follow up. Univariate (Mann-Whitney U) testing and OPLS-DA indicated specific increases in GlycB (p-value <1.0e-4), low density lipoprotein-2 subfractions (Variable importance in projection score; VIP >6.83e-1) and monoacyglyceride (20:4)(p-value <1.0e-4) and decreases in circulating anti-inflammatory high-density lipoprotein-4 subfractions (VIP >7.75e-1), phosphatidylcholines, phosphatidylglycerols, phosphatidylinositols and phosphatidylserines. The results indicate a persistant systemic metabolic phenotype that occurs even in cases of non-severe burn injury. The phenotype is indicative of an accute inflammatory profile which continues to be sustained post-injury, suggesting an impact on systems health beyond the site of injury. The phenotypes contained metabolic signatures consistent with chronic inflammatory states reported to have elevated incidence post- burn injury. Such phenotypic signatures may provide patient stratification opportunities, to identify individual responses to injury, personalise intervention strtegies and improve acute care, reducing risk of chronic co-morbidity.

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Identifying Non-Invasive Molecular Correlates relevant to Irradiation-Skin Burn Combined Injuries

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