Journal
BIOMED RESEARCH INTERNATIONAL
Volume 2019, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2019/1302015
Keywords
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Funding
- Beijing Natural Science Foundation [7174346, 7182146]
- Capital's Funds for Health Improvement and Research [CFH2018-4-40611]
- Beijing Municipal Science & Technology Commission [Z181100001718058]
- Fundamental Research Funds for the Central Universities [3332018168]
- National Natural Science Foundation of China [81672236, 81802224, 81871830, 81772350]
- Graduate Innovation Foundation of Peking Union Medical College [2017-1002-2-26]
- China-Japan Friendship Hospital Project [2018-1-QN-9]
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The immunologic factors have been implicated in the pathogenesis of osteonecrosis. We aimed to investigate the potential role of immune regulatory cells in the development of osteonecrosis of femoral head (ONFH). Sixty-seven patients diagnosed with ONFH and fifty-eight age-, height-, and weight-matched healthy subjects were included in this retrospective study between September 2015 and September 2018. The flow cytometry was used to test the count, percentage, and ratio of T and B lymphocyte subsets in peripheral blood. The T and B lymphocyte levels were compared among different ARCO stages, CJFH types, and etiology groups. The total lymphocyte count, CD3(+)T cells, Ts cells (CD3(+)CD8(+)), B-1 cell count, and B-1 cells (CD5(+)CD19(+)) were significantly higher in the patients with ONFH than those in the control subjects. The percentage of T lymphocytes in the patients with ARCO IV stage was significantly smaller than that in the ONFH patients with ARCO II and III stages. The percentage of inhibitory T lymphocytes in patients with CJFH type L3 was significantly smaller than that in the patients with types L1 and L2. In terms of the different ONFH etiologies, the total lymphocyte count and Ts cells (CD3(+)CD8(+)) were significantly lower in the ONFH patients induced by excessive alcohol intake than those in the idiopathic ONFH patients. Our results seem to indicate that immune regulatory cells, such as T and B lymphocytes, play an important role in the pathogenesis of ONFH. The development and progression of ONFH may be associated with immune system imbalance.
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