Transcriptomics

Dataset Information

10

Transcription profiling of rat lung to investigate trauma hemorrhagic shock-induced lung injury: hemorrhage- and injury-associated genes


ABSTRACT: The etiology of trauma-hemorrhage shock-induced acute lung injury has been difficult to elucidate due, at least in part, to the inability of in vivo studies to separate the non-injurious pulmonary effects of trauma-hemorrhage from the tissue injurious ones. To circumvent this in vivo limitation, we utilized a model of trauma-hemorrhagic shock (T/HS) in which T/HS-lung injury was abrogated by dividing the mesenteric lymph duct. In this way, it was possible to separate the pulmonary injurious response from the non-injurious systemic response to T/HS by comparing the pulmonary molecular response of rats subjected to T/HS which did and did not develop lung injury as well as to non-shocked rats. Utilizing high-density oligonucleotide arrays and treatment group comparisons of whole lung tissue collected at 3 hours after the end of the shock or sham-shock period, 139 of the 8,799 assessed genes were differentially expressed. Experiment Overall Design: Four groups of rats (n=3) were studied in order to identify changes in pulmonary gene expression associated with T/HS, both in the presence and absence of lung injury. These included trauma-sham shock (T/SS) rats which had a laparotomy (trauma) but were not subjected to hemorrhagic shock. These rats had no lung injury and served as controls for rats which were subjected to T/HS (laparotomy plus 90 min of shock) and had lung injury. Differences in gene expression between these two groups would represent both the effects of hemorrhagic shock as well as lung injury. To distinguish the gene response of hemorrhagic shock from the gene response associated with lung injury, gene expression was also compared between T/HS rats (hemorrhage and lung injury) and rats subjected to T/HS plus lymph duct ligation (T/HS-LDL), since the T/HS-LDL rats experienced hemorrhagic shock but had no measurable lung injury. Lastly, to identify hemorrhagic shock- modified genes, the pulmonary gene response of T/HS-LDL (hemorrhage without lung injury) were compared to rats subjected to T/SS plus LDL (no hemorrhage or lung injury). Three hours after the end of the 90 min shock or sham-shock period (i.e. 4.5 hrs after the induction of T/HS), the rats were sacrificed and specimens harvested for genechip analysis and histology.

INSTRUMENT(S): 418 [Affymetrix]

ORGANISM(S): Rattus norvegicus  

SUBMITTER: Virginie Marie Aris  

PROVIDER: E-GEOD-6332 | ArrayExpress | 2008-06-14

SECONDARY ACCESSION(S): GSE6332PRJNA99631

REPOSITORIES: GEO, ArrayExpress

altmetric image

Publications

Molecular signatures of trauma-hemorrhagic shock-induced lung injury: hemorrhage- and injury-associated genes.

Feinman Rena R   Deitch Edwin A EA   Aris Virginie V   Chu Hung B HB   Abungu Billy B   Caputo Francis J FJ   Galante Anthony A   Xu DaZhong D   Lu Qi Q   Colorado Iriana I   Streck Deanna D   Dermody James J   Soteropoulos Patricia P  

Shock (Augusta, Ga.) 20070901 3


The etiology of trauma-hemorrhagic shock (T/HS)-induced acute lung injury has been difficult to elucidate because of, at least in part, the inability of in vivo studies to separate the noninjurious pulmonary effects of trauma-hemorrhage from the tissue-injurious ones. To circumvent this in vivo limitation, we used a model of T/HS in which T/HS lung injury was abrogated by dividing the mesenteric lymph duct. In this way, it was possible to separate the pulmonary injurious response from the noninj  ...[more]

Similar Datasets

2007-07-25 | GSE6332 | GEO
| PRJNA99631 | ENA
2011-01-24 | E-GEOD-26696 | ArrayExpress
2011-01-24 | E-GEOD-26695 | ArrayExpress
2011-01-24 | GSE26696 | GEO
2011-03-16 | GSE27978 | GEO
2011-03-16 | E-GEOD-27978 | ArrayExpress
2011-08-26 | E-GEOD-31678 | ArrayExpress
2015-01-31 | MTBLS123 | MetaboLights
2015-07-01 | E-MTAB-2673 | ArrayExpress