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已发表论文
多孔纳米复合材料 Se@SiO2 可保护股骨头免受甲基泼尼松龙诱导的骨坏死
Authors Deng G, Dai C, Chen J, Ji A, Zhao J, Zhai Y, Kang Y, Liu X, Wang Y, Wang Q
Received 13 December 2017
Accepted for publication 17 February 2018
Published 22 March 2018 Volume 2018:13 Pages 1809—1818
DOI https://doi.org/10.2147/IJN.S159776
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Govarthanan Muthusamy
Peer reviewer comments 2
Editor who approved publication: Dr Linlin Sun
Background: Methylprednisolone
(MPS) is an important drug used in therapy of many diseases. However,
osteonecrosis of the femoral head is a serious damage in the MPS treatment.
Thus, it is imperative to develop new drugs to prevent the serious side effect
of MPS.
Methods: The potential interferences Se@SiO2 nanocomposites may have to the therapeutic effect of methylprednisolone (MPS) were evaluated by classical therapeutic effect index of acute respiratory distress syndrome (ARDS), such as wet-to-dry weight ratio, inflammatory factors IL-1β and TNF-α. And oxidative stress species (ROS) index like superoxide dismutase (SOD) and glutathione (GSH) were tested. Then, the protection effects of Se@SiO2 have in osteonecrosis of the femoral head (ONFH) were evaluated by micro CT, histologic analysis and Western-blot analysis.
Results: In the present study, we found that in the rat model of ARDS, Se@SiO2 nanocomposites induced SOD and GSH indirectly to reduce ROS damage. The wet-to-dry weight ratio of lung was significantly decreased after MPS treatment compared with the control group, whereas the Se@SiO2 did not affect the reduced wet-to-dry weight ratio of MPS. Se@SiO2 also did not impair the effect of MPS on the reduction of inflammatory factors IL-1β and TNF-α, and on the alleviation of structural destruction. Furthermore, micro CT and histologic analysis confirmed that Se@SiO2 significantly alleviate MPS-induced destruction of femoral head. Moreover, compared with MPS group, Se@SiO2 could increase collagen II and aggrecan, and reduce the IL-1β level in the cartilage of femoral head. In addition, the biosafety of Se@SiO2 in vitro and in vivo were supported by cell proliferation assay and histologic analysis of main organs from rat models.
Conclusion: Se@SiO2 nanocomposites have a protective effect in MPS-induced ONFH without influence on the therapeutic activity of MPS, suggesting the potential as effective drugs to avoid ONFH in MPS therapy.
Keywords: porous Se@SiO2 nanocomposites, methylprednisolone, osteonecrosis of femoral head, ROS damage, ARDS
Methods: The potential interferences Se@SiO2 nanocomposites may have to the therapeutic effect of methylprednisolone (MPS) were evaluated by classical therapeutic effect index of acute respiratory distress syndrome (ARDS), such as wet-to-dry weight ratio, inflammatory factors IL-1β and TNF-α. And oxidative stress species (ROS) index like superoxide dismutase (SOD) and glutathione (GSH) were tested. Then, the protection effects of Se@SiO2 have in osteonecrosis of the femoral head (ONFH) were evaluated by micro CT, histologic analysis and Western-blot analysis.
Results: In the present study, we found that in the rat model of ARDS, Se@SiO2 nanocomposites induced SOD and GSH indirectly to reduce ROS damage. The wet-to-dry weight ratio of lung was significantly decreased after MPS treatment compared with the control group, whereas the Se@SiO2 did not affect the reduced wet-to-dry weight ratio of MPS. Se@SiO2 also did not impair the effect of MPS on the reduction of inflammatory factors IL-1β and TNF-α, and on the alleviation of structural destruction. Furthermore, micro CT and histologic analysis confirmed that Se@SiO2 significantly alleviate MPS-induced destruction of femoral head. Moreover, compared with MPS group, Se@SiO2 could increase collagen II and aggrecan, and reduce the IL-1β level in the cartilage of femoral head. In addition, the biosafety of Se@SiO2 in vitro and in vivo were supported by cell proliferation assay and histologic analysis of main organs from rat models.
Conclusion: Se@SiO2 nanocomposites have a protective effect in MPS-induced ONFH without influence on the therapeutic activity of MPS, suggesting the potential as effective drugs to avoid ONFH in MPS therapy.
Keywords: porous Se@SiO2 nanocomposites, methylprednisolone, osteonecrosis of femoral head, ROS damage, ARDS
