期刊
BIOCHEMISTRY AND BIOPHYSICS REPORTS
卷 26, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.bbrep.2021.100981
关键词
Inflammatory mediators; Granulocyte; Anterior cruciate ligament reconstruction; Knee arthroscopic operation; Synovial fluid cells
资金
- Japan Society for the Promotion of Science [JSPS: 16K15657, 18K09097, 16K10813]
- Japan Agency for Medical Research and Development (AMED) [122013A109]
- Grants-in-Aid for Scientific Research [16K10813, 18K09097] Funding Source: KAKEN
The study revealed changes in synovial fluid cell population and their relationship with postoperative pain after ACLR. The granulocyte population in synovial fluid negatively correlated with postoperative pain 4 weeks after surgery and was associated with levels of IL1 beta and IL8. An increase in met-enkephalin concentration at 4 days post-surgery tended to reduce pain at rest.
Background: Biological processes after anterior cruciate ligament reconstruction (ACLR) is crucial for recovery. However, alterations in the of synovial fluid cell population during the acute phase following ACLR and the relationship between these cells and postoperative pain is unclear. The goal of this study was to reveal alterations in synovial fluid cell population during the acute phase following ACLR and relationship between postoperative pain and proportion of synovial fluid cells. Methods: Synovial fluids were obtained from all patients (n = 50) before surgery and from patients who showed hydrarthrosis at days 4 (n = 25), and 21 (n = 42) post-surgery. The cell population was analyzed by flow cytometry. IL1 beta, IL8, and met-enkephalin in synovial fluid were quantitated by enzyme-linked immunosorbent assay. Patients answered numerical rating scale (NRS) questionnaire at 4 days and approximately 4 weeks postoperatively. Results: The granulocyte population was significantly higher at 4 days after surgery than at any other time points. The population of macrophages was 3.2 times and 7.7 times as high as at surgery on days 4 and 21, respectively. T cell population was significantly higher 21 days after surgery compared to 4 days after surgery. All NRS 4 weeks after surgery showed a significant negative correlation with the granulocyte population in synovial fluid 4 days after surgery. Granulocyte population in synovial fluid significantly correlated with the levels of IL1 beta and IL8. Postoperative pain at rest tended to decrease with an increase in met-enkephalin concentration 4 days after ACLR. Conclusions: Synovial fluid after ACLR had an inflammatory environment at early time points and a healing environment in the subsequent phase about concerning to the cellular composition. A proportion of synovial fluid cells and endogenous opioids affected postoperative pain.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据