Calcitriol [1, 25[OH]2 D3] pre- and post-treatment suppresses inflammatory response to influenza A (H1N1) infection in human lung A549 epithelial cells
2013
Purpose
Influenza viruses infect airway epithelial cells, causing respiratory distress. Immune defense is maintained by chemokine/cytokine secretions from airway epithelial cells. While moderate inflammatory response protects from ill effects, hyper-inflammatory response promotes the pathogenesis. High circulating levels of vitamin D are known to mitigate effects of infectious diseases, including respiratory infectious diseases. The question whether and how vitamin D treatment pre-/post-viral exposure modulates inflammatory response is not clear. The present study was undertaken to understand autophagy/apoptosis balance and chemokine/cytokine response to influenza A (H1N1) infection by pre- and post-1, 25-dihydroxyvitamin D3 (1,25[OH]2 D3)[calcitriol] treatment of human lung A549 epithelial cells.
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