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MiRNA expression data from callus in standard fracture healing models and from fibrous tissues in nonunion models in rats on post-fracture day 14

ABSTRACT: Profiling of miRNA expressions comparing standard fracture healing models with nonunion models in rats

ORGANISM(S): Merkel cell polyomavirus Mus musculus Human gammaherpesvirus 8 Rattus norvegicus JC polyomavirus Betapolyomavirus macacae Human immunodeficiency virus 1 Homo sapiens Murid gammaherpesvirus 4 Human betaherpesvirus 5 Human alphaherpesvirus 2 Human alphaherpesvirus 1 Betapolyomavirus hominis human gammaherpesvirus 4 Mus musculus cytomegalovirus 2 Murid betaherpesvirus 1

PROVIDER: GSE55088 | GEO | 2015/09/03

SECONDARY ACCESSION(S): PRJNA238504

REPOSITORIES: GEO

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miRNA expression data from callus in standard fracture healing models and from fibrous tissues in nonunion models in rats on post-fracture day 14

Project description:Profiling of miRNA expressions comparing standard fracture healing models with nonunion models in rats 12w, male, Sprague–Dawley rats were used in this study. Animals were randomized to receive either a surgical treatment that has been shown to produce a nonunion or to a standard stabilized closed femoral shaft fracture that is known to successfully heal. The details of these procedures have been previously described. Briefly, to produce standard healing models, a 1.2-mm diameter K-wire was inserted retrograde into the right femoral intramedullary canal and a closed transverse femoral shaft fracture was produced using a three-point bending apparatus with a drop weight . To produce the nonunion, the fractured site was additionally exposed, and the periosteum was cauterized circumferentially for a distance of 2 mm on each side of the fracture . Five animals from each group were euthanized on post-fracture day 14 for microarray analysis.

2015-09-03 | E-GEOD-55088 | biostudies-arrayexpress

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Project description:The specific genes that distinguish normal fracture healing from abnormal healing or nonunion in humans are unknown. This study was an exploratory investigation of peripheral blood from acutely injured fracture patients collected over multiple days compared to age- and sex-matched healthy volunteers. Bone fragments were collected from acutely injured subjects during surgery through the Cooperative Human Tissue Network-Eastern Division (CHTN-ED http://pathology.med.upenn.edu/research/centers-and-institutes/cooperative-human-tissue-network). We used microarrays to do a global comparison between acutely injured (AI) subjects (AIS) and chronic Nonunion (NU) subjects vs. age- and sex-matched healthy volunteers (HV). We also compared tissue types by capturing bone fragments from the fracture site where possible.

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