Correlation of Shoulder Synovial Fluid TNF-α and LTB4 Expression with Pain and Function in Patients with Type 2 Diabetes Mellitus Combined with Rotator Cuff Injury
CHEN Tao, et al
Chengde Medical University, Hebei Chengde 067000, China
Abstract:Objective: To investigate the expression of tumor necrosis factor-α (TNF-α) and leukotriene B4 (LTB4) in the synovial fluid of the shoulder joints of patients with type 2 diabetes mellitus combined with rotator cuff injuries preoperatively and their correlation with shoulder pain and function. Methods: Sixty-eight patients with rotator cuff injuries treated with concurrent arthroscopic surgery admitted to Chengde City Central Hospital from January 2024 to March 2025 were prospectively included and divided into diabetic (n=32) and non-diabetic (n=36) groups according to whether they had type 2 diabetes mellitus. Enzyme-linked immunosorbent assay (ELISA) was used to detect the differences in the levels of TNF-α and LTB4 in the synovial fluid of the shoulder joints of the patients in the two groups, and to evaluate and compare the differences in the preoperative VAS scores of shoulder pain, the American Society of Shoulder and Elbow Surgeons (ASES) scores, the Constant Shoulder Score of the two groups, and the correlations between each score and TNF-α and LTB4 in the synovial fluid of the shoulder joints were analyzed by Pearson correlation-the correlation between each score and shoulder synovial fluid TNF-α, LTB4. Results: There was no statistical significant difference in the general information such as gender, age, body mass index, injury side, and tear size between the two groups (P>0.05). In the diabetic group, shoulder synovial fluid TNF-α, LTB4, and VAS scores were higher than those in the nondiabetic group, and ASES and Constant scores were lower than those in the nondiabetic group, and the differences were statistically significant (P<0.05). There is a positive correlation between the preoperative VAS scores and the levels of synovial fluid TNF-α and LTB4 in the shoulder joint among the 68 patients with rotator cuff injuries (P<0.05); preoperative ASES score and Constant score were negatively correlated with shoulder synovial fluid TNF-α and LTB4 levels (P<0.05). Conclusion: In patients with rotator cuff injury combined with type 2 diabetes mellitus, the preoperative levels of TNF-α and LTB4 in the synovial fluid of the shoulder joint were significantly elevated and positively correlated with joint pain and negatively correlated with functional scores, suggesting that diabetes mellitus may exacerbate localized inflammatory responses in the shoulder joint of rotator cuff injury patients and aggravate the pain and dysfunction.
陈涛, 白冰, 孟繁杰, 何建秋, 于力. 2型糖尿病合并肩袖损伤患者肩关节滑液TNF-α及LTB4表达与疼痛及功能的相关性[J]. 河北医学, 2025, 31(12): 2073-2078.
CHEN Tao, et al. Correlation of Shoulder Synovial Fluid TNF-α and LTB4 Expression with Pain and Function in Patients with Type 2 Diabetes Mellitus Combined with Rotator Cuff Injury. HeBei Med, 2025, 31(12): 2073-2078.
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