Abstract
A high proportion of tuberculosis (TB) patients experience delayed wound healing after surgery, and the specific reasons for this phenomenon are not yet clear. To analyse cytokine and growth factors at surgical sites to determine their contribution to delayed wound healing in patients with cervical lymph node TB (CLNT). We measured levels of interleukin (IL) 1β, IL-6, IL-10, IL-22, epidermal growth factor, fibroblast growth factor-2, interferon-gamma, tumour necrosis factor alpha and vascular endothelial growth factor A (VEGF-A) in cervical wound drainage fluid from 36 CLNT patients who underwent lymphadenectomy and in 24 thyroidectomy patients. Wound drainage fluid from CLNT patients showed higher IL-6 (P = 0.007) and VEGF-A (P < 0.001) levels than control thyroidectomy patients (P < 0.05). CLNT patients with a delayed healing time (>5 days; n = 18) showed higher IL-6 (P = 0.002) and VEGF-A (P < 0.001) levels in wound drainage fluid than CLNT patients with normal healing times (5 days; n = 18). IL-6 (OR 11.280, 95%CI 1.413-90.028; P = 0.022) and VEGF-A (OR 13.510, 95%CI 2.168-84.182; P = 0.005) can independently and significantly predict wound healing time in CLNT patients. These findings demonstrate that high IL-6 and VEGF-A levels in the post-operative wound fluid of CLNT patients correlate with delayed wound healing.
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