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Contrast-Enhanced MRI and Micro-CT Adopted for Evaluation of a Lipid-Lowering and Anticoagulant Herbal Epimedium-Derived Phytoestrogenic Extract for Prevention of Steroid-Associated Osteonecrosis

  • Ling Qin*
  • , Ge Zhang
  • , Hui Sheng
  • , James F. Griffth
  • , Ka Wai Yeung
  • , Kwok Sui Leung
  • *Corresponding author for this work

Research output: Chapter in book/report/conference proceedingChapterpeer-review

2 Citations (Scopus)

Abstract

We developed an alternative steroid-associated osteonecrosis (ON) rabbit model using a combination of a single injection of low-dose lipopolysaccharide (LPS) and three subsequent injections of pulsed high-dose methylprednisolone (MPS).The usefulness of this experimental ON model was evaluated using both conventional and advanced bio-imaging techniques, including contrast-enhanced dynamic MRI and a high-resolution micro-CT. Details on establishment of methodology are described, which were adopted into an efficacy study on a herbal Epimedium-derived phytoestrogenic extract (HEPE) developed for prevention of steroid-associated ON using an established rabbit model. The underlying mechanisms of HEPE for prevention of steroid-associated ON were found to be associated with inhibition of both intravascular thrombosis and extravascular bone marrow lipid deposition, the two known mechanistic pathways in pathogenesis of ON. Our experimental results provide for potential clinical trials or applications of HEPE in the prevention of ON among hig-hrisk patients undergoing steroid treatment.

Original languageEnglish
Title of host publicationAdvanced Bioimaging Technologies in Assessment of the Quality of Bone and Scaffold Materials
Subtitle of host publicationTechniques and Applications
EditorsLing Qin, Harry K. Genant, James F. Griffith, Kwok Sui Leung
PublisherSpringer Berlin Heidelberg
Pages593-611
Number of pages19
Edition1st
ISBN (Electronic)9783540454564
ISBN (Print)9783540454540, 9783642079559
DOIs
Publication statusPublished - 28 Jul 2007

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

User-Defined Keywords

  • Severe Acute Respiratory Syndrome
  • Severe Acute Respiratory Syndrome Patient
  • Lead Chromate
  • Pulse Steroid Treatment

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