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Primary Microglia Isolation from Mixed Glial Cell Cultures of Neonatal Rat Brain Tissue
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Neonatal Meningitis-Causing Escherichia coli Induces Microglia Activation which Acts as a Double-Edged Sword in

Yingying Su1,2, Guozhen Ma1,2, Yangyang Zheng1,2

  • 1The Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin 300457, China.

International Journal of Molecular Sciences
|June 28, 2023
PubMed

Insights

Neonatal meningitis-causing Escherichia coli (NMEC) activates microglia, releasing factors that harm neurons. Transforming growth factor-beta (TGF-β) shows therapeutic potential for bacterial meningitis brain damage.

Area of Science:

  • Neuroscience
  • Immunology
  • Infectious Diseases

Background:

  • Bacterial meningitis is a severe global disease with significant neurological sequelae.
  • Neonatal meningitis-causing Escherichia coli (NMEC) is a primary cause of Gram-negative bacterial meningitis in newborns.

Purpose of the Study:

  • To investigate microglial responses to NMEC infection.
  • To explore the dual role of inflammatory factors in meningitis.
  • To identify potential therapeutic targets for bacterial meningitis.

Main Methods:

  • RNA-sequencing (RNA-seq) to analyze microglial transcriptional profiles.
  • Assessment of inflammatory factor secretion and its effects on neutrophils and neurons.

Main Results:

  • NMEC infection activates microglia to produce inflammatory factors.
  • These factors aid pathogen clearance by recruiting neutrophils but also cause neuronal damage.
  • Transforming growth factor-beta (TGF-β) demonstrated a protective effect against meningitis-induced brain injury.

Conclusions:

  • Microglial-derived inflammatory factors have a dual role in bacterial meningitis, contributing to both defense and damage.
  • TGF-β presents a promising therapeutic candidate for mitigating neuroinflammation and brain damage in bacterial meningitis.
  • Developing novel strategies to modulate the inflammatory response is crucial for treating bacterial meningitis.
Keywords:
inflammatory factormicroglianeonatal meningitis-causing Escherichia colipolymorphonuclear neutrophil

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