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Physiology

Western University

2016

Alveolar macrophage

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The Role Of Gaba Signalling In Lung Macrophage Immune Response, Jacob W. Poirier Sep 2016

The Role Of Gaba Signalling In Lung Macrophage Immune Response, Jacob W. Poirier

Electronic Thesis and Dissertation Repository

Lung macrophages (LMϕs) play a key role in pulmonary innate immunity. They polarize into different phenotypes adapting to the needs of the immediate pulmonary environment. Studies in our laboratory suggest that murine LMϕs are endowed with an autocrine gamma-aminobutyric acid (GABA) signaling system. My honors thesis study found that antagonizing the autocrine GABA signaling in alveolar macrophages (AMϕs) increased secretion of the M1 cytokine tumor necrosis factor-alpha (TNF-α), suggesting a role for GABA signaling in immune response. This project explored whether GABA signaling plays a role in LMϕ polarization. Results from this study confirmed that bacterial toxin lipopolysaccharide (LPS) and …