1. 2-Undecanone alleviates asthma by inhibiting NF-[kappa]B pathway
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Song, Guihua, Yu, Suping, Zhang, Yan, Sun, Mengmeng, Zhang, Bingxue, and Peng, Minghao
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Care and treatment ,Usage ,Health aspects ,Asthma -- Care and treatment ,Ketones -- Usage -- Health aspects ,Transcription factors -- Health aspects - Abstract
Introduction Asthma is a common chronic respiratory disease characterized by reversible and intermittent airflow obstruction, airway hyperresponsiveness, airway remodeling, and chronic inflammation (Barcik et al. 2020; Schoettler and Strek 2020). [...], Asthma is characterized by airway inflammation and remodeling. 2-Undecanone (methyl nonyl ketone), a volatile organic compound originating from Houttuynia cordata, has the potential to ameliorate inflammatory diseases. This study aimed to explore potential benefits of 2-undecanone in asthma. 2-Undecanone (100, 200, or 400 mg/kg) was administered intragastrically to ovalbumin (OVA)-challenged BALB/c mice. Lung tissues were collected to observe histopathological changes, and bronchoalveolar lavage fluid (BALF) was collected for the detection of inflammatory cells and cytokine production. The results showed that 2-undecanone ameliorated OVA-induced pathologic changes of lungs, including reducing inflammatory cell infiltration, goblet cell hyperplasia, and airway smooth muscle thickness. The number of inflammatory cells and the levels of IL-4, IL-5, IL-13, and IgE in BALF were decreased by 2-undecanone in asthmatic mice. Furthermore, abnormal activation of NF-[kappa]B pathway in lung tissues of asthmatic mice was impeded by 2-undecanone. In vitro, 2-undecanone (12.5, 25, or 50 [micro]M) suppressed platelet-derived growth factor-BB-induced proliferation and migration of primary airway smooth muscle cells (ASMCs), and inhibited the switching of ASMCs from contractile phenotype to synthetic phenotype. Consistently, 2-undecanone blocked NF-[kappa]B activation in ASMCs. Collectively, 2-undecanone relieves asthma through alleviating airway inflammation and remodeling, and this beneficial effect is achieved by inhibiting NF-[kappa]B pathway. Key words: asthma, 2-undecanone, NF-[kappa]B pathway, airway inflammation, airway remodeling
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- 2023
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