신생아의 저산소성 허혈성 뇌병증과 혈중 비타민 D 농도의 연관성: 체계적 문헌고찰 및 메타분석
Association of Serum Vitamin D Levels with Hypoxic-Ischemic Encephalopathy in Neonates : A Systematic Review and Meta-Analysis
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Background : Neonatal hypoxic-ischemic encephalopathy (HIE) may lead to permanent brain injury or even death and vitamin D plays a role in neuroprotection from hypoxia. This study aimed to evaluate the association between neonatal and maternal serum vitamin D levels and neonatal HIE. Methods : The studies reporting serum 25-hydroxyvitamin D levels in neonates with HIE and published within March, 2021 were included through a systematic literature search in PubMed/Medline, Embase, Cochrane Library, and Google Scholar databases. Results : Six studies on 344 neonates were included in this study. The serum 25-hydroxyvitamin D levels in neonates with HIE were significantly lower than those in neonates without HIE (weighted mean difference -17.16 ng/mL, 95% confidence interval (CI) -26.47 to -7.84, p<0.001). Neonates with severe HIE had significantly lower serum 25-hydroxyvitamin D levels than neonates with mild to moderate HIE (ratio of means 0.79, 95% CI 0.65 to 0.98, p=0.03). Among the 214 neonates with HIE, 150 neonates were vitamin D deficient; however, among the 90 neonates without HIE, only 27 neonates were vitamin D deficient. Maternal serum 25-hydroxyvitamin D level in neonates with HIE was 36% reduced than that in neonates without HIE (ratio of means 0.64, 95% CI 0.53 to 0.78, p<0.001). Conclusion : These results showed that neonatal serum vitamin D levels were significantly associated with neonatal HIE occurrence and severity. Serum vitamin D levels should be carefully monitored in neonates with HIE and they might require vitamin D supplementation. Further long-term follow-up studies are needed to confirm the association between neonatal serum vitamin D levels and neurodevelopmental outcomes in neonates with HIE.
Abstract
Background : Neonatal hypoxic-ischemic encephalopathy (HIE) may lead to permanent brain injury or even death and vitamin D plays a role in neuroprotection from hypoxia. This study aimed to evaluate the association between neonatal and maternal serum vitamin D levels and neonatal HIE. Methods : The studies reporting serum 25-hydroxyvitamin D levels in neonates with HIE and published within March, 2021 were included through a systematic literature search in PubMed/Medline, Embase, Cochrane Library, and Google Scholar databases. Results : Six studies on 344 neonates were included in this study. The serum 25-hydroxyvitamin D levels in neonates with HIE were significantly lower than those in neonates without HIE (weighted mean difference -17.16 ng/mL, 95% confidence interval (CI) -26.47 to -7.84, p<0.001). Neonates with severe HIE had significantly lower serum 25-hydroxyvitamin D levels than neonates with mild to moderate HIE (ratio of means 0.79, 95% CI 0.65 to 0.98, p=0.03). Among the 214 neonates with HIE, 150 neonates were vitamin D deficient; however, among the 90 neonates without HIE, only 27 neonates were vitamin D deficient. Maternal serum 25-hydroxyvitamin D level in neonates with HIE was 36% reduced than that in neonates without HIE (ratio of means 0.64, 95% CI 0.53 to 0.78, p<0.001). Conclusion : These results showed that neonatal serum vitamin D levels were significantly associated with neonatal HIE occurrence and severity. Serum vitamin D levels should be carefully monitored in neonates with HIE and they might require vitamin D supplementation. Further long-term follow-up studies are needed to confirm the association between neonatal serum vitamin D levels and neurodevelopmental outcomes in neonates with HIE.
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