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[Structural features of intestinal flora in preterm rats with cognitive impairment: an analysis based on

Tao Yue1, Hong-Yan Lu, Zheng-Yang Xue

  • 1Department of Pediatrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, China. lhy5154@163.com.

Zhongguo Dang Dai Er Ke Za Zhi = Chinese Journal of Contemporary Pediatrics
|July 19, 2019
PubMed

Insights

Preterm rats with cognitive impairment show altered gut bacteria, including reduced diversity and specific changes in bacterial groups. These findings suggest a link between gut microbiome and cognitive deficits in preterm infants.

Area of Science:

  • Neuroscience
  • Microbiology
  • Developmental Biology

Background:

  • Preterm birth is associated with an increased risk of cognitive impairment.
  • The gut microbiome plays a crucial role in brain development and function.
  • Alterations in the gut microbiota have been implicated in various neurological disorders.

Purpose of the Study:

  • To investigate the structural characteristics of the intestinal flora in preterm rats exhibiting cognitive impairment.
  • To explore the association between changes in intestinal flora and cognitive impairment in this preterm rat model.

Main Methods:

  • A preterm rat model was established using lipopolysaccharide injection during gestation.
  • Cognitive function was assessed using the Morris water maze.
  • Hippocampal pathology was examined via hematoxylin and eosin staining.
  • Intestinal flora composition was analyzed using 16S rRNA sequencing and principal component analysis (PCA).

Main Results:

  • Preterm rats with cognitive impairment displayed hippocampal neuronal degeneration and necrosis.
  • Significant reductions in gut flora abundance and diversity were observed in the cognitive impairment group.
  • Specific bacterial taxa, including Proteobacteria, Prevotella, Lactobacillus, Staphylococcaceae, and Oligella, showed significant alterations.
  • PCA confirmed distinct differences in gut microbiota composition between the groups.

Conclusions:

  • Significant structural changes in the intestinal flora are evident in preterm rats with cognitive impairment.
  • These findings provide a foundation for exploring microecological interventions for cognitive deficits post-preterm birth.
Abstract

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