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Open AccessJournal Article

Interleukin-13: Central mediator of allergic asthma

TLDR
In this article, the type 2 cytokine IL-13, which shares a receptor component and signaling pathways with IL-4, was found to be necessary and sufficient for the expression of allergic asthma.
Abstract
The worldwide incidence, morbidity, and mortality of allergic asthma are increasing. The pathophysiological features of allergic asthma are thought to result from the aberrant expansion of CD4 + T cells producing the type 2 cytokines interleukin-4 (IL-4) and IL-5, although a necessary role for these cytokines in allergic asthma has not been demonstrable. The type 2 cytokine IL-13, which shares a receptor component and signaling pathways with IL-4, was found to be necessary and sufficient for the expression of allergic asthma. IL-13 induces the pathophysiological features of asthma in a manner that is independent of immunoglobulin E and eosinophils. Thus, IL-13 is critical to allergen-induced asthma but operates through mechanisms other than those that are classically implicated in allergic responses.

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Citations
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Inhibitory effects of astragaloside IV on ovalbumin-induced chronic experimental asthma.

TL;DR: Significant reduction of eosinophilic airway inflammation, airway hyperresponsiveness, interleukin (IL)-4 and IL-13 levels in bronchoalveolar lavage fluid, and total immunoglobulin E levels in serum indicate that astragaloside IV may mitigate the development of characteristic features in chronic experimental asthma.
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IL-33-mediated IL-13 secretion by ST2+ Tregs controls inflammation after lung injury.

TL;DR: This study identifies a regulatory mechanism involving IL-33 and Treg secretion of IL-13 in response to tissue damage that is instrumental in limiting local inflammatory responses and may shape the myeloid compartment after lung injury.
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Personalized medicine with biologics for severe type 2 asthma: current status and future prospects

TL;DR: Biologics targeting type 2 cytokines have shown consistent efficacy, especially in patients with evidence of type 2 inflammation, suggesting that the future of asthma biologics is promising.
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IL-11 Selectively Inhibits Aeroallergen-Induced Pulmonary Eosinophilia and Th2 Cytokine Production

TL;DR: It is demonstrated that IL-11 selectively inhibits Ag-induced eosinophilia, Th2 inflammation, and VCAM-1 gene expression in pulmonary tissues.
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Ocular surface and MUC5AC alterations in atopic patients with corneal shield ulcers.

TL;DR: Ocular surface inflammation, tear film instability, and decreased conjunctival MUC5AC mRNA expression were thought to be important in the pathogenesis of noninfectious corneal shield ulcers in atopic ocular surface disease.
References
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Functional diversity of helper T lymphocytes.

TL;DR: The existence of subsets of CD4+ helper T lymphocytes that differ in their cytokine secretion patterns and effector functions provides a framework for understanding the heterogeneity of normal and pathological immune responses.
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Predominant TH2-like bronchoalveolar T-lymphocyte population in atopic asthma

TL;DR: Atopic asthma is associated with activation in the bronchi of the interleukin-3, 4, and 5 and GM-CSF gene cluster, a pattern compatible with predominant activation of the TH2-like T-cell population.
Journal ArticleDOI

Eosinophilic inflammation in asthma.

TL;DR: Eosinophilic inflammation of the airways is correlated with the severity of asthma and these cells are likely to play a part in the epithelial damage seen in this disease.
Journal ArticleDOI

Requirement for IL-13 Independently of IL-4 in Experimental Asthma

TL;DR: This article showed that IL-4 receptor α chain-dependent pathway may underlie the genetic associations of asthma with both the human 5q31 locus and the IL4 receptor and showed that selective neutralization of IL-13, a cytokine related to interleukin-4 that also binds to the α chain of the IL 4 receptor, ameliorated asthma phenotype.
Journal ArticleDOI

Cellular events in the bronchi in mild asthma and after bronchial provocation.

TL;DR: It is concluded that allergic asthma is accompanied by extensive inflammatory changes in the airways, even in mild clinical and subclinical disease.
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