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Effect of Age on Fracture Healing in the Rat: Series 1

ABSTRACT: mRNA gene expression was measured in rats at 6 (young), 26 (adult) and 52 (older) weeks of age at the time of fracture. Samples were collected at 0, 0.4, 1, 2, 4, and 6 weeks after fracture. RNA from two rats were pooled for each Affymetrix Rat U34A array. Keywords = rat Keywords = fracture Keywords = age Keywords = time Keywords = femur Keywords: time-course

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE589 | GEO | 2004/02/01

SECONDARY ACCESSION(S): PRJNA85371

REPOSITORIES: GEO

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Effect of Age on Fracture Healing in the Rat

Project description:mRNA gene expression was measured in intact female Sprague-Dawley rats at 6 (young), 26 (adult) and 52 (older) weeks of age at the time of fracture. Samples were collected at 0, 0.4, 1, 2, 4, and 6 weeks after fracture. RNA from two rats were pooled for each Affymetrix Rat U34A array. Mid-shaft, simple, transverse left femoral fractures were induced after retrograde intramedullary rod fixation with a Bonnarens and Einhorn device. Samples were collected from one third of the femoral length, centered on the fracture site, including the external callus, cortical bone, and marrow elements. Keywords = rat Keywords = fracture Keywords = age Keywords = time Keywords = femur Keywords: other

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Project description:A study of rat femoral fracture healing in young (6 weeks old at fracture), adult (26 weeks old at fracture), and old (52 weeks old at fracture) rats. Samples were collected at time of surgery (intact controls) and at 3 days, 1 week, 2 weeks, 4 weeks, and 6 weeks after fracture. Samples were the mid third of the femoral length including the external callus, cortical bone and marrow elements. Fracture was stabilized with an intramedullary rod prior to fracture with a Bonnarens and Einhorn device. Keywords: time-course

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