ArticleActa orthopaedica et traumatologica turcica2023
The effects of prophylactic tadalafil use on VEGF expression in the rabbit model of steroid-induced femoral head avascular necrosis.
Article in Acta orthopaedica et traumatologica turcica, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
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2 citing papers in PubMed, 1 synthesis or guideline pooled it, 3 citations in OpenAlex.
- Animal Models of Steroid-Induced Osteonecrosis of the Femoral Head Established by Different Doses of Lipopolysaccharide Combined with Glucocorticoids: A Systematic Review and Network Meta-Analysis.International journal of molecular sciences · 2026Pooled it
- Pravastatin combined with fibrin sealant-embedded BMSCs enhances recovery in steroid-induced avascular necrosis of the femoral head.Scientific reports · 2026Article
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Authors and funding
6 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
objectiveThe purpose of this study was to examine the effect of prophylactic tadalafil use on a steroid-induced femoral head avascular necrosis model in terms of microscopic, imaging, and molecular biological changes.
methodsTwenty-four New Zealand rabbits were divided into 3 equal groups. Eight rabbits were designated as the control group and did not receive treatment. Rabbits in group 1 (G1) received 0.1 mg/kg Escherichia coli lipopolysaccharide (LPS) intravenously and 40 mg/ kg methylprednisolone sodium succinate (MP) was administered intramuscularly for 3 days consecutively. Rabbits in group 2 (G2) were given 5 mg/kg tadalafil orally for 10 consecutive days. Starting on the eighth day, 0.1 mg/kg LPS was given, and following this 40 mg/kg MP injections were administered for 3 days. All animals were sacrificed 3 weeks after the final MP injection. Magnetic resonance imaging was performed, and bilateral femora were harvested. Half of the femoral head was stored for Vascular Endothelial Growth Factor (VEGF) examination with Western blot analysis. The other half was examined microscopically for the presence of osteonecrosis.
resultsIn G1, 15 out of 16 hips (93%) of the 8 rabbits had osteonecrosis compared to 8 out of 12 hips (67%) of 6 rabbits in G2 (P > .05). The VEGF expression in G2 was significantly higher than in the control group and G1 (P < .05 and P < .001, respectively). There was no significant difference in VEGF expression between the control group and G1 (P > .05).
conclusionThis study has shown us that femoral head osteonecrosis can be reliably induced with LPS and corticosteroid, as described in the literature. Prophylactic tadalafil use did not decrease the occurrence of osteonecrosis significantly. However, it significantly increased VEGF expression in the femoral head independent of the effects of steroids and LPS.
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