title: Therapeutic down-modulators of staphylococcal superantigen-induced inflammation and toxic shock.
abstract: Staphylococcal enterotoxin B (SEB) and related superantigenic toxins are potent stimulators of the immune system and cause a variety of diseases in humans, ranging from food poisoning to toxic shock. These toxins bind directly to major histocompatibility complex (MHC) class II molecules on antigen-presenting cells and specific Vβ regions of T-cell receptors (TCR), resulting in hyperactivation of both monocytes/macrophages and T lymphocytes. Activated host cells produce massive amounts of proinflammatory cytokines and chemokines, activating inflammation and coagulation, causing clinical symptoms that include fever, hypotension, and shock. This review summarizes the in vitro and in vivo effects of staphylococcal superantigens, the role of pivotal mediators induced by these toxins in the pathogenic mechanisms of tissue injury, and the therapeutic agents to mitigate the toxic effects of superantigens.
authors: Department of Immunology, Integrated Toxicology Division, United States Army Medical Research Institute of Infectious Diseases, 1425 Porter Street, Fort Detrick, Frederick, MD 21702-5011, USA. Teresa.krakauer@amedd.army.mil
authors: Teresa
authors: T
authors: Krakauer
mesh_terms: D000818:Animals; D016207:Cytokines / Q000037:antagonists & inhibitors / Q000096:biosynthesis; D004768:Enterotoxins / Q000037:antagonists & inhibitors / Q000633:toxicity*; D000949:Histocompatibility Antigens Class II / Q000378:metabolism; D006801:Humans; D007249:Inflammation / Q000188:drug therapy*; D011948:Receptors, Antigen, T-Cell / Q000378:metabolism; D012772:Shock, Septic / Q000188:drug therapy*; D015398:Signal Transduction / Q000187:drug effects; D013210:Staphylococcus / Q000737:chemistry*; D018089:Superantigens / Q000633:toxicity*
chemical_list: D016207:Cytokines; D004768:Enterotoxins; D000949:Histocompatibility Antigens Class II; D011948:Receptors, Antigen, T-Cell; D018089:Superantigens; C031818:enterotoxin B, staphylococcal