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Chinese Journal of Digestion and Medical Imageology(Electronic Edition) ›› 2025, Vol. 15 ›› Issue (02): 162-167. doi: 10.3877/cma.j.issn.2095-2015.2025.02.012

• Original Articles • Previous Articles    

Application value of Th17/Treg immune imbalance in the diagnosis and disease evaluation of children with abdominal Henoch-Schonlein purpura

Wenhai Bao1, Qin Ruan1, Feifei Li1,()   

  1. 1. Department of Pediatrics,Taihe County People's Hospital,Taihe 236600,China
  • Received:2024-12-03 Online:2025-04-01 Published:2025-04-22
  • Contact: Feifei Li

Abstract:

Objective

To explore the application value of Th17/Treg immune imbalance in the diagnosis and disease evaluation of children with abdominal Henoch-Schonlein purpura (HSP).

Methods

A total of 122 children with abdominal HSP admitted to Taihe County People's Hospital from January 2019 to March 2024 were retrospectively analyzed,and 95 children with acute gastroenteritis (AG) and 109 healthy children were selected for comparison. Baseline clinical data and peripheral blood samples were collected from all subjects. Flow cytometry was used to detect the levels of Th17 and Treg in peripheral blood of children with abdominal HSP,and the Th17/Treg ratio was calculated. The ROC curve was drawn to analyze the diagnostic and differential efficacy of Th17/Treg ratio for abdominal HSP. According to the symptom score,the children with abdominal HSP were further divided into mild,moderate and severe groups,and the Th17/Treg ratio in peripheral blood of children with abdominal HSP with different disease severity was compared. Pearson coefficient was used to analyze the correlation between Th17/Treg ratio and IgA level. Logistic regression model was used to analyze the risk factors of severe abdominal HSP.

Results

Compared with AG group and healthy children group,the children with abdominal HSP group had significantly higher Th17 level and Th17/Treg ratio,and a significantly lower Treg level (all P<0.05).In healthy children and children with abdominal HSP,the AUC of Th17/Treg in the diagnosis of abdominal HSP was 0.898 (sensitivity 93.44%,specificity 81.65%). The AUC of Th17/Treg in differentiating AG from HSP was 0.822 (sensitivity was 81.97%,specificity was 71.58%). With the aggravation of the severity of abdominal HSP,the level of Th17 and Th17/Treg ratio in peripheral blood gradually increased,while the level of Treg gradually decreased (all P<0.05). The Th17/Treg ratio in peripheral blood of children with abdominal HSP was positively correlated with IgA level (r=0.407,P<0.05). Increased CRP,D-dimer,serum IgA and Th17/Treg ratio were independent risk factors for severe abdominal HSP (all P<0.05).

Conclusion

Th17/Treg immune imbalance has a significant value in the diagnosis and disease evaluation of abdominal HSP in children.

Key words: Abdominal Henoch-Schonlein purpura, Th17/Treg, Immune imbalance, Children, Early diagnosis

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