Chin J Dent Res 2019;22(2):93–104;doi:10.3290/j.cjdr.a42513
Applications of Bioactive Ions in Bone Regeneration
Writer:Si Han LIN, Wen Jie ZHANG, Xin Quan JIANG Clicked:
Objective: To provide an overview of internal organ involvement (IOI) in immunoglobulin G4-related sialadenitis (IgG4-RS) patients, with a focus on the prevalence and clinical features of IOI, the analysis of serum IgG4 levels in patients with or without IOI, and the usefulness of positron emission tomography (PET) for examination of the whole body. Methods: A systematic search was performed using PubMed, CNKI, Wanfang Data and CQVIP databases. Results: A total of 99 articles, including 493 IgG4-RS cases, were analysed in this study. The male-to-female ratio was 1.57:1 and the mean age was 61.67 years. IOI was observed in 71.6% patients, including lesions of the pancreas (38.5%), the biliary system and liver (17.8%), distant lymphadenopathy (20.3%), the respiratory system (15.6%), the urinary system (12.0%) and retroperitoneal fibrosis (11.4%). The lesions could occur homeochronously or metachronously with IgG4-RS. The serum IgG4 levels in the IOI-positive and IOI-negative groups were 1,131 952 mg/dL and 659 8
The repair of large bone defects remains a huge challenge for bone regenerative medicine. To meet this challenge, a number of bone substitutes have been developed over recent years to overcome the drawbacks of traditional autograft and allograft therapies. Thus, the improvement of the osteoinductive ability of these substitutes has become a major focus for research in the field of bone tissue engineering. It has been reported that some metallic ions play an important role in bone metabolism in the human body, and that bone repair could be enhanced by incorporating these ions into bone substitutes. Moreover, it is well documented that ions released from these substitutes such as magnesium, zinc, and strontium can increase the osteogenic and angiogenic properties of bone repair scaffolds. However, the mechanisms of action of these ions on cellular bioactivity are currently unclear. Therefore, in the present article, we highlight the recent use of bioactive ions in bone tissue engineering and discuss the effects of these ions on osteogenesis and neovascularisation.
Key words: bioactive ions, bone regeneration, tissue engineering, osteogenesis, angiogenesis
(editor:CJDR) |