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Purpose <p>The objective of this study was to ascertain the predictive value of pan-immune-inflammation value (PIV) in the diagnosis of diabetic macular oedema (DME) and to analyse the relationship between PIV and inflammatory markers on optical coherence tomography (OCT).</p> Methods <p>A total of 155 patients were included in this observational study: 40 had diabetes without retinopathy, 60 had DME, and 55 were selected as healthy controls. All participants had a complete blood count. The neutrophil-to-lymphocyte ratio (NLR), systemic immune-inflammation index (SII), and PIV were calculated and compared. Multivariable regression models were used to further investigate the relationship between systemic inflammatory markers and other biomarkers and OCT markers.</p> Results <p>The DME group had significantly higher WBC (<i>p</i> &lt; 0.001), monocyte (<i>p</i> = 0.003) and neutrophil counts (<i>p</i> = 0.024). PIV showed the highest sensitivity and area under the curve for predicting patients with DME in ROC curve analysis. The optimal PIV cut-off value was &gt; 427.69 to distinguish patients with DME from healthy controls, and &gt; 451.29 from diabetic patients without DR. In the regression analysis, HRF count was associated with PIV (<i>p</i> = 0.036), CMT (<i>p</i> = 0.005), and BCVA (<i>p</i> &lt; 0.001). Additionally, the presence of SRF was associated with WBC (<i>p</i> = 0.043), PIV (<i>p</i> = 0.013), CMT (<i>p</i> = 0.007), and BCVA (<i>p</i> = 0.045).</p> Conclusion <p>PIV may be a useful marker of systemic neutrophil- and monocyte-mediated inflammation in DME, independent of diabetes duration and HbA1c, though further studies are needed to confirm its clinical utility and define an optimal cut-off value.</p>

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Diagnostic efficiency of pan-immune-inflammation value to predict diabetic macular edema and its relationship with OCT-based biomarkers of inflammation

  • 期刊论文

  • 发表日期：

    2025年8月30日

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  • Ozlem Candan,
  • Gözde Orman,
  • Nurten Ünlü,
  • Güner Ozkan

摘要

Purpose

The objective of this study was to ascertain the predictive value of pan-immune-inflammation value (PIV) in the diagnosis of diabetic macular oedema (DME) and to analyse the relationship between PIV and inflammatory markers on optical coherence tomography (OCT).

Methods

A total of 155 patients were included in this observational study: 40 had diabetes without retinopathy, 60 had DME, and 55 were selected as healthy controls. All participants had a complete blood count. The neutrophil-to-lymphocyte ratio (NLR), systemic immune-inflammation index (SII), and PIV were calculated and compared. Multivariable regression models were used to further investigate the relationship between systemic inflammatory markers and other biomarkers and OCT markers.

Results

The DME group had significantly higher WBC (p < 0.001), monocyte (p = 0.003) and neutrophil counts (p = 0.024). PIV showed the highest sensitivity and area under the curve for predicting patients with DME in ROC curve analysis. The optimal PIV cut-off value was > 427.69 to distinguish patients with DME from healthy controls, and > 451.29 from diabetic patients without DR. In the regression analysis, HRF count was associated with PIV (p = 0.036), CMT (p = 0.005), and BCVA (p < 0.001). Additionally, the presence of SRF was associated with WBC (p = 0.043), PIV (p = 0.013), CMT (p = 0.007), and BCVA (p = 0.045).

Conclusion

PIV may be a useful marker of systemic neutrophil- and monocyte-mediated inflammation in DME, independent of diabetes duration and HbA1c, though further studies are needed to confirm its clinical utility and define an optimal cut-off value.