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September 10, 2025Frontiers in ImmunologyOpen Access

Hyperglycemia enhances group B Streptococcus pathogenicity by impairing TLR2 expression and chemotactic response in the human placenta

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Authors

RJRodrigo Jiménez‐EscutiaAVArumi Villafuerte-PérezDVDonovan Vargas-Alcantar

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Overview

Experimental analysis reveals hyperglycemia impairs immune response to group B Streptococcus, suggesting a link to gestational diabetes complications.

Key Points

  • High glucose levels reduced the placental immune response to group B Streptococcus infection, leading to increased bacterial growth.
  • In placental tissue under hyperglycemic conditions, there was decreased TLR-2 expression and altered chemokine production.
  • The study evaluated immune responses in human villous explants infected with GBS at various glucose concentrations.
  • Hyperglycemia compromises the chemotaxis of immune cells, potentially exposing the placenta to higher infection risks.

Cite This Study

Jiménez‐Escutia et al. (2025) studied this question.

synapsesocial.com/papers/68c23fc3b210217d647979a6https://doi.org/10.3389/fimmu.2025.1610381
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Unveiling the microbial shift: the impact of group B Streptococcus on vaginal microbiota and inflammation in late pregnancy2025
  2. 2Single-cell sequencing reveals that neutrophils mediate the inflammatory response in gestational diabetes2025
  3. 3Effects of Gestational Metabolic Abnormalities on Placenta2025
  4. 4Histomorphologial changes of placenta in gestational diabetes with a review on CD34 expression2025
  5. 5Dysregulation of placental mitochondrial structure dynamics and clearance in maternal obesity and gestational diabetes2025