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  • Title: Clinical significance of neutrophil-lymphocyte ratio and monocyte-lymphocyte ratio in women with hyperglycemia.
    Author: Wang J, Zhu QW, Cheng XY, Sha CX, Cui YB.
    Journal: Postgrad Med; 2020 Nov; 132(8):702-708. PubMed ID: 32425090.
    Abstract:
    Objective: Abnormal pro-inflammatory regulation of the immune system might contribute to the pathogenesis of hyperglycemia during pregnancy. We examined the correlations of neutrophil-lymphocyte ratio (NLR) and monocyte-lymphocyte ratio (MLR) with disease severity and assessed their predictive values. Methods: This retrospective case-control study included 311 cases of hyperglycemia first detected during pregnancy (HFDP) [153 with gestational diabetes mellitus (GDM) and 158 with diabetes in pregnancy (DIP)] and, as a control group, 172 pregnant women with normal glucose tolerance. The NLRs and MLRs were calculated from the blood test data. Results: The absolute leukocyte, neutrophil, monocyte, and lymphocyte counts as well as the NLR and MLR values of HFDP patients significantly differed from control values, but no significant differences were detected in the leukocyte, neutrophil, and monocyte counts of the GDM and DIP groups. Significantly different metrics were selected, binary analysis performed, and odds ratios calculated to identify risk factors. Age, BMI, NLR, and MLR were found to be risk factors for HFDP, and high systolic blood pressure (SBP) at triage and MLR related to the occurrence of DIP. Receiver operating characteristics curve analysis showed that NLR and MLR had better diagnostic accuracy in distinguishing HFDP from controls [NLR area under the curve (AUC) = 0.78; MLR AUC = 0.72] than age and BMI. Values for NLR > 4.394 or MLR > 0.309 correlated with the severity of maternal clinical symptoms and perinatal infant outcomes. MLR was the best predictor of DIP (AUC = 0.72) and MLR values > 0.299 could identify patients at risk for developing DIP and having poor fetal outcomes. Conclusion: Metrics derived from peripheral blood neutrophil, monocyte, and lymphocyte counts are thought to reflect systemic immune-inflammation. Elevated MLR and NLR may be unfavorable prognostic factors for clinical outcomes in patients with hyperglycemia during pregnancy.
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