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Early prednisolone treatment in pediatric dengue did not significantly alter immune responses, particularly T and NK cell functions, suggesting limitations for this therapy in managing severe dengue complications.

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Area of Science:

  • Immunology
  • Virology
  • Pediatrics

Background:

  • Dysregulated immune responses are implicated in severe dengue complications.
  • Understanding host-pathogen interactions is crucial for effective dengue treatment.

Purpose of the Study:

  • To investigate the impact of early prednisolone therapy on immune gene expression in pediatric dengue patients.
  • To assess the efficacy of prednisolone in modulating host immune responses during dengue infection.

Main Methods:

  • Randomized controlled trial in Vietnamese pediatric dengue cases.
  • High-dose (2 mg/kg) prednisolone versus placebo therapy.
  • Whole-blood gene-transcriptome analysis (RNA-Seq) at two days post-therapy initiation.

Main Results:

  • 81 out of 47,231 evaluated gene-transcripts showed differential abundance between prednisolone and placebo groups.
  • Prednisolone-treated patients exhibited altered expression of transcripts related to T and NK cell cytolytic functions.
  • No significant changes in plasma cytokine levels were observed with prednisolone treatment.

Conclusions:

  • Early high-dose prednisolone therapy has a limited capacity to attenuate the host immune response in pediatric dengue.
  • Findings suggest that prednisolone may not be an effective strategy for preventing immune-mediated complications in dengue.
  • Further research is needed to identify immunomodulatory therapies that can effectively manage dengue pathogenesis.