Nitric oxide and redox mechanisms in the immune response

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ID: 307127
2011
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Abstract
ABSTRACT The role of redox molecules, such as NO and ROS, as key mediators of immunity has recently garnered renewed interest and appreciation. To regulate immune responses, these species trigger the eradication of pathogens on the one hand and modulate immunosuppression during tissue-restoration and wound-healing processes on the other. In the acidic environment of the phagosome, a variety of RNS and ROS is produced, thereby providing a cauldron of redox chemistry, which is the first line in fighting infection. Interestingly, fluctuations in the levels of these same reactive intermediates orchestrate other phases of the immune response. NO activates specific signal transduction pathways in tumor cells, endothelial cells, and monocytes in a concentration-dependent manner. As ROS can react directly with NO-forming RNS, NO bioavailability and therefore, NO response(s) are changed. The NO/ROS balance is also important during Th1 to Th2 transition. In this review, we discuss the chemistry of NO and ROS in the context of antipathogen activity and immune regulation and also discuss similarities and differences between murine and human production of these intermediates.
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Authors David A. Wink, Harry B. Hines, Robert Y.S. Cheng, Christopher Switzer, Wilmarie Flores‐Santana, Michael P. Vitek, Lisa A. Ridnour, Carol A. Colton
Journal journal of leukocyte biology
Year 2011
DOI
10.1189/jlb.1010550
URL
https://doi.org/10.1189/jlb.1010550
Keywords Keywords not found

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