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Published on: August 7, 2017
Mannose-binding lectin polymorphisms and pulmonary outcome in premature neonates: a pilot study
Ettore Capoluongo1, Giovanni Vento, Sandro Rocchetti
1Laboratory of Clinical Molecular Biology, Institute of Biochemistry & Clinical Biochemistry, School of Medicine, Catholic University, Largo F. Vito 1, 00168, Rome, Italy. ecapoluongo@rm.unicatt.it
Intensive Care Medicine
|July 27, 2007
Summary
Mannose-binding lectin (MBL2) gene variants, specifically -550G > C, show protective effects against lung issues in preterm newborns. Certain MBL2 haplotypes may help predict and manage lung disease of prematurity.
Area of Science:
- Immunogenetics
- Neonatal Medicine
- Pulmonary Medicine
Background:
- Mannose-binding lectin (MBL2) is crucial for complement activation and inflammation.
- Genetic variants in MBL2 influence its function and protein levels.
- Understanding MBL2 variants is important for neonatal respiratory health.
Purpose of the Study:
- To investigate the prevalence of MBL2 gene variants in preterm newborns.
- To correlate specific MBL2 genotypes and haplotypes with pulmonary outcomes.
- To explore the diagnostic potential of MBL2 haplotype combinations for lung disease of prematurity.
Main Methods:
- Analysis of six MBL2 genetic variants in 75 preterm newborns using a reverse dot-blot kit.
- Association of individual genotypes and haplotype combinations with pulmonary outcome variables.
- Multivariate logistic regression to control for gestational age and birth weight.
Main Results:
- The -550G > C variant (homozygous/heterozygous) was linked to reduced mechanical ventilation, CPAP use, and fewer transfusions.
- The R52C heterozygous mutation correlated with increased bronchopulmonary dysplasia.
- Haplotype combinations associated with low MBL2 levels predicted better respiratory outcomes.
Conclusions:
- MBL2 genotypes and haplotypes significantly impact lung disease risk in preterm infants.
- Specific MBL2 haplotype combinations show potential as biomarkers for lung disease of prematurity.
- These findings may inform targeted interventions for high-risk neonates.
