Cited by 73Cardiac electrophysiology and arrhythmiasMast cells and histamineAsthma and respiratory diseases

Sudden death in children and adolescents

Wren, Christopher·2002·Heart

Abstract

Mast cells secrete multiple cytokines and play an important role in allergic inflammation. Although it is widely accepted that bacteria infection occasionally worsens allergic airway inflammation, the mechanism has not been defined. In this study, we show that LPS induced Th2-associated cytokine production such as IL-5, IL-10, and IL-13 from mast cells and also synergistically enhanced production of these cytokines induced by IgE cross-linking. LPS-mediated Th2-type cytokine production was abolished in mouse bone marrow-derived mast cells derived from C3H/HeJ mice, suggesting that Toll-like receptor 4 is essential for the cytokine production. Furthermore, we found that mitogen-activated protein kinases including extracellular signal-regulated kinase 1/2, c-Jun N-terminal kinase, and p38 kinase were activated by LPS stimulation in bone marrow-derived mast cells. Inhibition of extracellular signal-regulated kinase activation has little effect on LPS-mediated cytokine production. In contrast, inhibition of c-Jun N-terminal kinase activation significantly suppressed both IL-10 and IL-13 expression at both mRNA and protein levels. Interestingly, although inhibition of p38 did not down-regulate the mRNA induction, it moderately decreased all three cytokine productions by LPS. These results indicate that LPS-mediated production of IL-5, IL-10, and IL-13 was distinctly regulated by mitogen-activated protein kinases. Our findings may indicate a clue to understanding the mechanisms of how bacteria infection worsens the clinical features of asthma.

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Crossref · 10.1136/heart.88.4.426

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Authors
Wren, C.
Affiliations
Freeman Hospital (GB)
Corresponding author
Wren, Christopher
Venue
Heart
Publisher
BMJ
Published
2002-10
Volume
88
Issue
4
Pages
426-431
ISSN
  • 1355-6037 (ISSN-L)
  • 1468-201X
OpenAlex
W4235504731
Cited by
73
References
21
Citations by year
2026: 1 · 2025: 3 · 2024: 1 · 2023: 5 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 2 · 2014: 6 · 2013: 4 · 2012: 3
FWCI
2.57
Type
journal article
Language
en
Open access
closed
Locations
Heart (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Life Sciences › Immunology and Microbiology › Immunology › Mast cells and histamine
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
Keywords
sudden death, sudden cardiac death, children, adolescents, sudden infant death syndrome, sudden cardiac arrest

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