Study on the level and correlation of sPD-1 and sPD-L1 in peripheral blood of children with frequent relapsing nephrotic syndrome

SHI Mengyue; GUAN Fengjun

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Journal of Hunan Normal University(Medical Science) ›› 2023, Vol. 20 ›› Issue (2) : 84-88.

Study on the level and correlation of sPD-1 and sPD-L1 in peripheral blood of children with frequent relapsing nephrotic syndrome

SHI Mengyue, GUAN Fengjun

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Abstract

Objective To investigate the levels of serum soluble programmed death receptor 1(sPD-1) and soluble programmed death protein ligand 1(sPD-L1) in children with frequent relapse of primary nephrotic syndrome and their clinical correlation. Methods A total of 44 patients were included in this study. they were divided into a frequent relapsing nephrotic syndrome (FRNS) group and a non-frequently relapsing nephrotic syndrome (NFRNS) group according to the frequency of recurrence during the course.24 healthy children were served as normal control; blood samples were collected at different time points before and after GC treatment in each group, including before treatment, stable period after treatment, and initial recurrence after treatment; ELISA was adopted to detect serum sPD-1 and sPD-L1. Results Before GC treatment: The levels of sPD-1 and sPD-L1 in the two study groups were higher than those in the control group, and the levels of sPD-L1 in the FRNS group were higher than those in the NFRNS group. After GC treatment: The levels of sPD-1 and sPD-L1 in children in the NFRNS group were not significantly different from those in the normal control group. The levels of sPD-1 and sPD-L1 in children in the FRNS group were higher than those in the control group. The levels of sPD-1 and sPD-L1 in children in the FRNS group were higher than those in the NFRNS group. Compared with before treatment: The levels of sPD-1 and sPD-L1 in FRNS group and NFRNS group were lower than those in the same group before treatment. Before GC treatment in FRNS group, the level of sPD-L1 was negatively correlated with CD19⁺B cells and NK cells, and the level of sPD-1 was positively correlated with sPD-L1 and CD3⁺T cells. Conclusion The high level of sPD-L1 and sPD-L1 before and after GC treatment may be related to the frequent recurrence of PNS disease; Serum sPD-1 and sPD-L1 may participate in frequent activity of the PNS disease by affecting the lymphocyte system and antagonizing GC effects.

Key words

primary nephrotic syndrome / frequent recurrence / glucocorticoid / SPD-1 / SPD-L1

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SHI Mengyue, GUAN Fengjun. Study on the level and correlation of sPD-1 and sPD-L1 in peripheral blood of children with frequent relapsing nephrotic syndrome[J]. Journal of Hunan Normal University(Medical Science). 2023, 20(2): 84-88

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