Abstract: Objective To investigate potential correlation of serum galectin-10(Gal-10), signal transducer, activator of transcription 3 (STAT3) and C-C chemokine ligand 19 (CCL19) with severity of chronic eczema. Methods TFrom October 2022 to October 2024,104 patients admitted to the 7th People's Hospital of Zhengzhou with chronic eczema were reviewed. Based on implicated area of eczema and severity index (EASI)score, they were assigned into mild group (EASI score≤10 points,43 cases),moderate group (10 points＜EASI score ≤ 19 points,36 cases),and severe group (EASI score ≥ 20 points,25 cases). Meantime, 60 healthy individuals from routine physical check were selected as control group. ELISA was used to detect serum Gal-10,STAT3,and CCL19. Spearman correlation was performed to analyze the correlation between serum Gal-10,STAT3,CCL19 levels with EASI score in patients. Logistic regression was performed to analyze the factors affecting the condition of patients. Receiver operating characteristic (ROC) curves were used to evaluate the diagnostic value of serum Gal-10,STAT3,and CCL19 for the severity of chronic eczema. Results The case group had manifestly higher serum Gal-10,STAT3 and CCL19 than control group (P＜0.05). The moderate and severe groups had conspicuous higher EASI scores and serum Gal-10,STAT3 and CCL19 than mild group (P＜0.05); And with severe group being conspicuously higher than moderate group (P＜0.05). Serum Gal-10,STAT3,CCL19 in patients with chronic eczema were positively correlated with EASI score (r=0.606,0.417,0.507,P＜0.05). The elevated EASI score, serum Gal-10,STAT3 and CCL19 were all believed to be risk factors to aggravate chronic eczema (P＜0.05). The area under the curve (AUC) of serum Gal-10,STAT3,CCL19 alone and in combination for diagnosing the severity of chronic eczema was 0.827,0.811,0.803,and 0.914,respectively. The combined diagnostic efficacy was superior to the individual detection of the three (Z_{three combination-Gal-10}=2.703, Z_{three combination-STAT3}=2.251,Z_{three combination-CCL19}=2.795,all P＜0.05). Conclusions The serum level of Gal-10, STAT3 and CCL19 in patients with chronic eczema are elevated and correlated with severity of the disease. The combined detection of the three combined index factor may support clinical evaluation of the severity of chronic eczema.

Key words: galectin-10, signal transducer and activator of transcription 3, C-C chemokine ligand 19, chronic eczema, severity of disease