ArticleStem cell research & therapy2021
Intra-iliac bone marrow injection as a novel alternative to intra-tibial inoculation in rat model.
Article in Stem cell research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIntra-bone marrow injection (IBMI) in rats is adopted in many studies for stem cell and hematopoietic cell transplantation. IBMI in the tibia or the femur results in severe distress to the animal. Therefore, this study aims to evaluate intra-iliac injections as an alternative approach for IBMI.
methodsTwenty-seven Sprague Dawley rats were assigned into 3 groups, 9 rats each, for 4 weeks. The control group rats were not injected. Tibia group rats were injected intra-tibial and the iliac group rats were injected intra-iliac with saline. Behavioral, radiological, histopathological, and stress evaluation was performed. Total bilirubin, cortisol, and insulin-like growth factor-1 (IGF1) were measured.
resultsBehavioral measurements revealed deviation compared to control, in both injected groups, on the 1st and 2nd week. By the 3rd week, it was equivalent to control in the iliac group only. Bilirubin and cortisol levels were increased by intra-tibial injection compared to intra-iliac injection. The IGF-1 gene expression increased compared to control at 1st and 2nd weeks in intra-iliac injection and decreased by intra-tibial injection at 2nd week. The thickness of the iliac crest was not different from the control group, whereas there were significant differences between the control and tibia groups. Healing of the iliac crest was faster compared to the tibia. In the 3rd week, the tibia showed fibrosis at the site of injection whereas the iliac crest showed complete bone reconstruction.
conclusionIntra-iliac injections exert less distress on animals, and by 3 weeks, they regained their normal activity in comparison to intra-tibial injections.
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