4.4 Article

The effects of systemic and local fatty acid amide hydrolase and monoacylglycerol lipase inhibitor treatments on the metabolomic profile of lungs

期刊

BIOMEDICAL CHROMATOGRAPHY
卷 36, 期 1, 页码 -

出版社

WILEY
DOI: 10.1002/bmc.5231

关键词

endocannabinoid; FAAH; GC-MS; MAGL; metabolomics

资金

  1. Hacettepe University Scientific Research Projects Coordination Unit [THD-2017-16101]

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The endocannabinoid system plays a crucial role in respiratory diseases, and modulation of endocannabinoid levels can prevent airway inflammation and hyperreactivity. Treatment with FAAH or MAGL inhibitors locally or systemically did not cause significant histopathological changes in mice, but had a significant impact on the levels of endocannabinoid metabolites in the lungs.
The contribution of the endocannabinoid system to both physiology and pathological processes in the respiratory system makes it a promising target for inflammatory airway diseases. Previously, we have shown that increasing the tissue endocannabinoid levels by fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL) inhibitors can prevent airway inflammation and hyperreactivity. In this study, the changes in the levels of major metabolites of endocannabinoids by systemic and local FAAH or MAGL inhibitor treatments were evaluated. Mice were treated with either the FAAH inhibitor URB597 or the MAGL inhibitor JZL184 by local (intranasal) or systemic (intraperitoneal) application. Bronchoalveolar lavage (BAL) fluids and lungs were isolated afterward in order to perform histopathological and metabolomic analyses. There were no significant histopathological changes in the lungs and neutrophil, and macrophage and lymphocyte numbers in BAL fluid were not altered after local and systemic treatments. However, GC-MS-based metabolomics profile allowed us to identify 102 metabolites in lung samples, among which levels of 75 metabolites were significantly different from the control. The metabolites whose levels were changed by treatments were mostly related to the endocannabinoid system and energy metabolism. Therefore, these changes may contribute to the anti-inflammatory effects of URB597 and JZL184 treatments in mice.

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