• Intern Emerg Med · Oct 2024

    Association of serum interleukin-2 with severity and prognosis in hospitalized patients with community-acquired pneumonia: a prospective cohort study.

    • Feng-Min Zhu, Juan Xu, Qi-Yuan He, You-Peng Deng, Ming-Yan Liu, Ying Liu, Jing Sun, Hui Zhao, Lin Fu, and Jin Yang.
    • Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Anhui Medical University, Furong Road No 678, Hefei, 230601, Anhui, China.
    • Intern Emerg Med. 2024 Oct 1; 19 (7): 192919391929-1939.

    AbstractThe prior studies have shown that interleukin-2 (IL-2) exerts important roles in the pathological and physiological processes of lung diseases. However, the role of IL-2 in community-acquired pneumonia (CAP) is still uncertain. Through a prospective cohort study, our research will explore the correlations between serum IL-2 levels and the severity and prognosis in CAP patients. There were 267 CAP patients included. Blood samples were obtained. Serum IL-2 were tested by enzyme-linked immunosorbent assay (ELISA). Demographic traits and clinical characteristics were extracted. Serum IL-2 were gradually elevated with increasing severity scores in CAP patients. Correlation analyses revealed that serum IL-2 were connected with physiological parameters including liver and renal function in CAP patients. According to a logistic regression analysis, serum IL-2 were positively correlated with CAP severity scores. We also tracked the prognostic outcomes of CAP patients. The increased risks of adversely prognostic outcomes, including mechanical ventilation, vasoactive agent usage, ICU admission, death, and longer hospital length, were associated with higher levels of IL-2 at admission. Serum IL-2 at admission were positively associated with severe conditions and poor prognosis among CAP patients, indicated that IL-2 may involve in the initiation and development of CAP. As a result, serum IL-2 may be an available biomarker to guide clinicians in assessing the severity and determining the prognosis of CAP.© 2024. The Author(s).

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