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Journal of Tuberculosis and Lung Disease ›› 2025, Vol. 6 ›› Issue (4): 426-431.doi: 10.19983/j.issn.2096-8493.20250032

• Original Articles • Previous Articles     Next Articles

Study on the correlation between serum soluble PD-1 and the severity and prognosis of pulmonary tuberculosis patients in ICU

Wei Yunxia1,2, Wang Xin1,2(), Lin Hongxia2,3, Li Yishuai2,4   

  1. 1Key Laboratory of Lung Disease, Hebei Provincial Chest Hospital, Shijiazhuang 050000, China
    2Hebei Provincial Key Laboratory of Pulmonary Disease, Shijiazhuang 050000, China
    3Department of Clinical Pharmacology Experiment, Hebei Provincial Chest Hospital, Shijiazhuang 050000, China
    4Department of Thoracic Surgery, Hebei Provincial Chest Hospital, Shijiazhuang 050000, China
  • Received:2025-02-15 Online:2025-08-20 Published:2025-08-08
  • Contact: Wang Xin, Email: wangxinxkyy@163.com
  • Supported by:
    Medical Science Research Project of Hebei Province(20231215)

Abstract:

Objective: To evaluate the value of serum soluble programmed death receptor-1 (PD)-1 in assessing prognosis of the patients with pulmonary tuberculosis (PTB) in intensive care unit (ICU). Methods: A total of 102 pulmonary tuberculosis patients admitted to the ICU of Hebei Provincial Chest Hospital from April 2022 to April 2024 were included in this study, and they were divided into survival group and death group respectively, according to their survival status after 28 days in ICU. The serum soluble PD-1 levels of the patients in the two groups were compared, and its correlation with the severity, prognosis score and nutritional indicator of pulmonary tuberculosis patients in ICU was analyzed. Receiver operating characteristic (ROC) curve analysis was used to analyze the value of serum soluble PD-1 in assessing prognosis of the patients with pulmonary tuberculosis in ICU. Results: Among the 102 pulmonary tuberculosis patients in ICU who were included in this study, 42 patients died (death group) with the case fatality rate of 41.2% (42/102), and 60 patients survived (survival group) with the survival rate of 58.8% (60/102). Compared with the patients in the survival group, the serum PD-1 level increased significantly among those patients in the death group (PD-1 (pg/ml): 47.25 (41.48, 51.15) vs. 35.45 (28.40, 41.80), Z=―6.399, P<0.001). PD-1 level was positively correlated with APACHE Ⅱ and SOFA scores (r=0.580, P<0.001; r=0.575, P<0.001), negatively correlated with prealbumin level (r=―0.297, P=0.002), and not correlated with lactate level (r=0.104, P=0.297). The results of ROC curve analysis showed that the area under the ROC curve (AUC) of PD-1 in predicting death of pulmonary tuberculosis patients after entering ICU 28 days was 0.873 (95%CI: 0.809-0.938). The optimal cutoff value of serum PD-1 was 38.45 pg/ml, with the sensitivity and the specificity were 95.2% and 65.0% respectively. While PD-1 value was combined with APACHE Ⅱ, the sensitivity was more than 99.9% and the specificity was 76.7%. Conclusion: The serum soluble PD-1 level is significantly increased in the death patients with pulmonary tuberculosis in ICU. Serum soluble PD-1 has certain clinical value in evaluating the severity and prognosis of tuberculosis patients admitted to the ICU.

Key words: Intensive care units, Tuberculosis, pulmonary, Programmed cell death 1 receptor, Prognosis

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