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Plasma Extracellular Vesicles from Bronchopulmonary Dysplasia Infants Initiate Inflammation and Abnormal Angiogenesis in Neonatal Murine Retinas

ABSTRACT: To investigate the mechanisms of plasma extracellular vesicles from preterm infants with bronchopulmonary dysplasia (BPD) elicit inflammation and abnormal angiogenesis in neonatal wild-type mouse retinas.

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ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Blood Plasma

SUBMITTER: Huijun Yuan

LAB HEAD: Shu Wu

PROVIDER: PXD068467 | Pride | 2026-03-02

REPOSITORIES: Pride

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Project description:BackgroundBovine colostrum (BC) with liposomal delivery system (LDS) is a promising supplement to premature infant formula in absence of mother own milk. We propose that BC with LDS can target multiple etiological factors that threaten the developing retina, making premature infant less liable for retinopathy of prematurity (ROP). The aim of this study was to evaluate the effect of BC with LDS in the prevention of ROP.MethodsThis was a single center, randomized, controlled trial. Two hundred and eleven preterm infants of gestational age ≤ 32weeks were admitted to the NICU of Alexandria University Children Hospital, Egypt, and randomly allocated into either non-BC group (n = 105) or BC group (n = 106). Patients in BC group received 3.5 ml /kg/day of BC for 14 days. All patients were monitored for development of ROP, anemia, late onset sepsis (LOS), bronchopulmonary dysplasia (BPD), periventricular leukomalacia (PVL) and necrotizing enterocolitis (NEC), in addition to growth assessment. Multivariate binary logistic regression analysis was performed to determine factors predicting ROP development.ResultsCompared with the non-BC group, BC group was associated with a significantly lower incidence of ROP (5/100 vs. 16/100, respectively) with a p-value of 0.033. The administration of BC significantly decreased serum C- reactive protein (CRP) level and increased weight on day-14 of the study in comparison with the CRP level and birthweight at the beginning of study, with Cohen's D= -0.184, D = -2.246, respectively. Patients with suspected sepsis were significantly less in BC than non-BC group, p = 0.004. Patients with BC had significantly higher hemoglobin level on day-14 than non-BC-group, with median (IQR) 12.2 (11.0-13.9) and 11.7 (10.5-12.9), respectively. BC intake is one of factors that decreased development of ROP in univariate analysis. Nevertheless, weight gain and birth weight were the most significant factors affecting ROP development in multivariate-regression model.ConclusionBC may reduce the incidence of ROP in preterm neonates aged ≤ 32 weeks. This might be due to keeping better Hb level and growth rate, as well as anti-inflammatory properties through its ability to decrease CRP level.Trial registrationThis work was registered on 06/13/2022 in clinicaltrial.gov with ID no.: NCT05438680 and URL: https://classic.Clinicaltrialsgov/ct2/show/NCT05438680?term=NCT05438680&draw=2&rank=1 .

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Plasma Extracellular Vesicles from Bronchopulmonary Dysplasia Infants Initiate Inflammation and Abnormal Angiogenesis in Neonatal Murine Retinas

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