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STSS w/out superantigens?

Posted by Paul_Orwin on 28 Mar 2007 at 03:37 GMT

The staphylococcal TSS pathogenesis is very well established to be based on the activity of SAg. Likewise, STSS and Necrotizing Fasciitis caused by GAS are very strongly associated with Spe (pyrogenic exotoxins). It is odd in the extreme to associate this organism with STSS without any SPE association. The shock response is hard to square with this. I tend to think that there needs to be proposed non-SAg pathogenesis pathway to support this contention. Alternatively, there might be a novel mitogen present that hasn't previously been identified. Given the extraordinary number of SAg identified in Staph and Strep, it's easier to imagine that the toxin in question was not found, rather than that it doesn't exist.

RE: STSS w/out superantigens?

TJQ85 replied to Paul_Orwin on 09 Apr 2007 at 07:19 GMT

Sir, I do appreciate your comments. Presently, I also tend to suspect that there might be a novel mitogen present that hasn't previously been identified.

We are trying to pursue it now!