The Value of Serum ADA, NLR and RL in the Early Diagnosis of EBV-IM in Children
Objective: To explore the characteristics of changes in serum ADA, NLR and RL in EBV-IM, so as to provide evidence for clinical diagnosis and treatment. Methods: A retrospective analysis of the serum ADA, NLR and RL experimental results of 328 children with EBV-IM in our hospital from January 2018 to June 2024 (experimental group) and 100 non-EBV-IM (control group) admitted during the same period. Results: The ADA and RL of the experimental group were significantly higher than those of the control group (P < 0.01), and the NLR was lower than that of the control group (P < 0.05). The best cut-off values for the diagnosis of EBV-IM in serum ADA, NLR and RL were >30.9, 0.43, respectively. 8%; the area under the ROC curve is 0.900, 0.911, 0.907, the sensitivity is 97.6%, 91.5%, and 85.4%, the specificity is 75.0%, 80.0%, and 88.0%, and the positive predictive value is 92.8%, 93.8, respectively % And 95.9%, the negative predictive value was 90.4%, 74.1% and 64.7%, respectively. Conclusion: The area under the ROC curve of NLR in the diagnosis of EBV-IM is the largest, the sensitivity and positive predictive value of ADA are the highest, the specificity and negative predictive value of RL are the best, the positive rate of ADA, NLR and RL and EBV-IgM and EBV-DNA, liver The degree of damage is closely related, so the combined detection of serum ADA, NLR and RL can provide a basis for early diagnosis and treatment of EBV-IM.
Epstein-Barr Virus
EBV-IM是由Epstei-Barr病毒(EBV)感染引起急性良性淋巴增殖传染病。EBV人群感染率居高不下,EBV感染后引起IM以学龄前儿童为主,临床表现为发热、咽峡炎、颈淋巴结、肝、脾肿大、肝功能异常等。EBV可潜伏在B细胞内,EBV-DNA持续呈阳性慢性携带者免疫力下降时可继发IM、淋巴瘤、鼻咽Ca等疾病。腺苷脱氨酶(ADA)是T细胞介导的细胞免疫非特异性标志物,能反映肝功能受损程度
选择我院2018年1月至2023年6月收治328例EBV-IM患儿作为实验组,年龄11月~12岁,平均4.2 ± 2.6岁,男201例,女127例,纳入标准:所有患儿符合诸福棠《实用儿科学》第七版IM标准
所有患儿空腹采血2管(生化管和EDTA-K2各1管),AU5800生化分析仪测ADA、ALT;采用BC6800血液分析仪测定WBC、LYMPH、NEUT,计算NLR;反应性淋巴比例采用资深细胞形态学医生通过涂片瑞姬氏染色光学显微镜OLYMPUS-BX46镜检复审,EBV-DNA和EBV-IgM外送武汉康圣达检测中心检测。
采用SPSS20.0统计软件进行统计分析,计量资料以x ± s或M (P25, P75)表示,组间比较采用t检验,计数资料以率表示,通过受试者工作曲线(ROC)及灵敏度、特异度、阴性预测值、阳性预测值分析各项效能,P < 0.01时差异有明显统计学意义,P < 0.05时差异有统计学意义。
1) 两组基线资料比较,EBV-DNA > 400拷贝/ml为阳性。实验组EBV-DNA和EBV-IgM阳性率、WBC、LYMPH、ALT均明显高于对照组,NEUT明显低于对照组,有明显统计学意义(P < 0.01),EBV-IgG无统计学意义(P > 0.05)。见
组别 |
例数 |
EBV-DNA (阳性率%) |
EBV-IgM (阳性率%) |
EBV-IgG (阳性率%) |
WBC (×109/L) |
NEUT (%) |
LYMPH (%) |
ALT (U/L) |
实验组 |
328 |
86.30 |
63.50 |
81.32 |
13.32 (11.74, 16.27) |
17.05 (11.35, 20.56) |
75.89 (71.35, 85.78) |
103.00 (76.40, 124.60) |
对照组 |
100 |
1.00 |
2.00 |
71.00 |
6.43 (5.81, 8.07) |
50.02 (41.25, 63.28) |
44.52 (40.11, 57.68) |
26.01 (11.30, 29.40) |
t值 |
99.62 |
87.11 |
0.115 |
10.329 |
15.42 |
53.27 |
68.32 |
|
P值 |
0.000 |
<0.001 |
0.865 |
<0.001 |
<0.001 |
<0.001 |
<0.001 |
2) 实验组血清ADA及RL均明显高于对照组,NLR明显低于对照组,有明显统计学意义(P < 0.01)。见
组别 |
例数 |
ADA |
NLR |
RL |
实验组 |
328 |
49.20 (36.10, 71.30) |
0.43 (0.17, 0.99) |
11.00 (7.00, 15.00) |
对照组 |
100 |
14.90 (11.10, 19.60) |
1.90 (1.37, 2.14) |
1.00 (0, 1.00) |
T值 |
33.379 |
19.541 |
36.422 |
|
P值 |
<0.001 |
<0.001 |
<0.001 |
3) ROC分析ADA、NLR及RL最佳截断值为30.9 U/L、0.43、8%,ADA、NLR及RL诊断EBV-IM诊断性能见
诊断指标 |
最佳临界值U/L |
ROC |
灵敏度% |
特异度% |
阳性预测值% |
阴性预测值% |
ADA |
30.900 |
0.900 |
97.561 |
75.000 |
92.753 |
90.361 |
NLR |
0.429 |
0.911 |
91.463 |
80.000 |
93.750 |
74.074 |
RL |
8.0% |
0.907 |
85.366 |
88.000 |
95.890 |
64.706 |
三项联合 |
0.998 |
99.085 |
92.000 |
97.598 |
96.842 |
EBV感染口咽部上皮细胞,当儿童免疫力低下时,潜伏EBV使细胞毒性淋巴细胞(CD8+LC)增多,淋巴细胞增殖导致淋巴组织增生,淋巴细胞绝对值增多,颈淋巴结、肝脾肿大,扁桃体增大有假膜,增多的CD8+LC激活T淋巴细胞,CD4+LC降低,细胞毒性细胞、炎症因子增多,导致宿主免疫功能紊乱