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Ocular surface inflammatory cytokines as a biomarker for retinopathy of prematurity
1Department of Ophthalmology, Shanxi Children's Hospital, Shanxi Maternal and Child Health Care Hospital, NO.13, Taiyuan, Shanxi, China. dun31188@yeah.net.
Insights
Inflammatory cytokines Interleukin-1 (IL-1), Interleukin-6 (IL-6), and Tumor Necrosis Factor-alpha (TNF-α) in tear fluid correlate with Retinopathy of Prematurity (ROP) severity. These biomarkers may aid in ROP diagnosis and monitoring.
Area of Science:
- Ophthalmology
- Neonatology
- Immunology
Background:
- Retinopathy of Prematurity (ROP) is a significant cause of childhood blindness.
- Inflammation plays a crucial role in the progression of ROP.
- Tear fluid offers a non-invasive method for biomarker assessment.
Purpose of the Study:
- To identify potential tear fluid biomarkers for ROP progression and severity.
- To investigate the levels of key inflammatory cytokines in relation to ROP stages.
Main Methods:
- Eighty preterm infants were categorized into four ROP severity groups.
- Tear fluid cytokine levels (IL-1, IL-6, TNF-α, IL-10, IL-17, IL-22) were quantified using ELISA.
- Statistical analysis involved one-way ANOVA with Bonferroni-adjusted post hoc tests.
Main Results:
- Significantly elevated levels of IL-1, IL-6, and TNF-α were observed in moderate and severe ROP groups compared to no ROP and mild ROP groups.
- No significant differences in IL-10, IL-17, and IL-22 levels were found across ROP severity groups.
- Pairwise comparisons confirmed significant differences for IL-1 and IL-6 between most ROP severity groups.
Conclusions:
- Increased tear fluid concentrations of IL-1, IL-6, and TNF-α are associated with ROP severity.
- These cytokines show potential as non-invasive biomarkers for ROP diagnosis and follow-up.
- Further studies are needed to confirm clinical applications and validate these findings.
Background:
ROP is a leading cause of childhood blindness, with inflammation influencing its progression. Tear fluid serves as a non-invasive medium for assessing biomarkers.
Aim:
This study examines key inflammatory cytokines in tear fluid to identify biomarkers for ROP progression and severity.
Methods:
Eighty preterm infants were grouped by ROP severity (No, Mild, Moderate, Severe; n = 20 each). Tear fluid cytokine levels were measured via ELISA and compared using one-way ANOVA with Bonferroni-adjusted post hoc tests.
Results:
The levels of IL-1, IL-6, and TNF-α were significantly different across ROP severity groups; higher concentrations in more severe stages of ROP/moderate and severe than those in no ROP and mild ROP. However, no significant differences were found among the groups regarding IL-10, IL-17, and IL-22. In pairwise comparisons, the levels of IL-1 and IL-6 in most of the ROP severity groups showed significant differences according to the Bonferroni post hoc analysis, while no significant differences were observed regarding IL-10, IL-17, and IL-22.
Conclusion:
The study further reveals that increased levels of the pro-inflammatory cytokines IL-1, IL-6, and TNF-α in tear fluid correlate with the severity of ROP. These findings suggest that tear fluid inflammatory cytokines may be regarded as potential biomarkers in the diagnosis and follow-up of ROP. This non-invasive approach presents a new opportunity for monitoring the disease process and assisting in clinical decisions. These observations need further confirmation and studies on their clinical application.
