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Abstract Title:

Ginger and its Bioactive Component 6-Shogaol Mitigate Lung Inflammation in a Murine Asthma Model.

Abstract Source:

Am J Physiol Lung Cell Mol Physiol. 2019 Dec 4. Epub 2019 Dec 4. PMID: 31800263

Abstract Author(s):

Gene T Yocum, Julie J Hwang, Maya Mikami, Jennifer Danielsson, Aisha S Kuforiji, Charles W Emala

Article Affiliation:

Gene T Yocum

Abstract:

Asthma, a common disorder associated with airway inflammation and hyperresponsiveness, remains a significant clinical burden in need of novel therapeutic strategies. Patients are increasingly seeking complementary and alternative medicine (CAM) approaches to control their symptoms, including the use of natural products. Ginger, a natural product that we previously demonstrated acutely relaxes airway smooth muscle (ASM), has long been reported to possess anti-inflammatory properties, though a precise mechanistic understanding is lacking. In these studies, we demonstrate that chronic administration of whole ginger extract or 6-shogaol, a bioactive component of ginger, mitigateshouse dust mite antigen-mediated lung inflammation in mice. We further show that this decrease in inflammation is associated with reducedairway responsiveness. Utilizingstudies, we demonstrate that 6-shogaol augments cAMP concentrations in CD4 cells, consistent with phosphodiesterase (PDE) inhibition, and limits the induction of nuclear factor-κB (NF-κB) signaling and the production of pro-inflammatory cytokines in activated CD4 cells. Sustained elevations in cAMP concentration are well known to inhibit effector T cell function. Interestingly, regulatory T cells (Tregs) utilize cAMP as a mediator of their immunosuppressive effects, andwe demonstrate here that 6-shogaol augments the Treg polarization of naïve CD4 cells. Taken together with previous reports, these studies suggest ginger and 6-shogaol have the potential to combat asthma via two mechanisms: acute ASM relaxation and chronic inhibition of inflammation.

Study Type : In Vitro Study

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Sayer Ji
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