[Alterations in the intestinal microbiota of preterm infants with neurodevelopmental impairments: a prospective cohort study].

OBJECTIVES

To investigate the difference in intestinal microbiota between preterm infants with neurodevelopmental impairment (NDI) and those without NDI.

METHODS

In this prospective cohort study, the preterm infants who were admitted to the neonatal intensive care unit of Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region from September 1, 2019 to September 30, 2021 were enrolled as subjects. According to the assessment results of Gesell Developmental Scale at the corrected gestational age of 1.5-2 years, they were divided into two groups: normal (=115) and NDI (=100). Fecal samples were collected one day before discharge, one day before introducing solid food, and at the corrected gestational age of 1 year. High-throughput sequencing was used to compare the composition of intestinal microbiota between groups.

RESULTS

Compared with the normal group, the NDI group had a significantly higher Shannon diversity index at the corrected gestational age of 1 year (<0.05). The principal coordinate analysis showed a significant difference in the composition of intestinal microbiota between the two groups one day before introducing solid food and at the corrected gestational age of 1 year (<0.05). Compared with the normal group, the NDI group had a significantly higher abundance of in the intestine at all three time points, a significantly higher abundance of one day before introducing solid food and at the corrected gestational age of 1 year, and a significantly lower abundance of one day before introducing solid food (<0.05).

CONCLUSIONS

There are significant differences in the composition of intestinal microbiota between preterm infants with NDI and those without NDI. This study enriches the data on the characteristics of intestinal microbiota in preterm infants with NDI and provides reference for the microbiota therapy and intervention for NDI in preterm infants.