Staphylococcal pyrogenic exotoxin (PE) types A and B were tested for their role in production of a scarlatiniform rash. The PEs elicited minimal skin reactions after intracutaneous injection into animals not presensitized to the toxins. In contrast, erythematous injection into animals not presensitized to the toxins. In contrast, erythematous and edematous rashes were produced after administrat...

Concordance between lipopolysaccharide and platelet activating factor - mediated events have suggested that the latter likely mediates all effects induced by the former. In this issue of Temperature, Steiner and Romanovsky challenge this notion, showing that while platelet activating factor is a potent pyrogenic mediator, the thermoregulatory responses to lipopolysaccharide are instead induced ...

Exercise increases mean body temperature (T(body)) and cytokine concentrations in plasma. Cytokines facilitate PG production via cyclooxygenase (COX) enzymes, and PGE(2) can mediate fever. Therefore, we used a COX-2 inhibitor to test the hypothesis that PG-mediated pyrogenicity may contribute to the raised T(body) in exercising humans. In a double-blind, cross-over design, 10 males [age: 23 yr ...

Purified pyrogenic exotoxin from Group A streptococcal filtrates (Streptococcus pyogenes, type 10, strain NY-5) has been characterized primarily as a protein complexed with hyaluronic acid. Amino acid composition and analysis revealed a typical acidic protein with an average molecular weight of 29,000. The purified exotoxin was free of streptolysins O and S, nicotinamide adenine dinucleotidases...

Although the involvement of blood-borne PGE2 in fever has been hypothesized by several authors and has substantial experimental support, the current literature often rejects this hypothesis because several attempts to induce fever by a peripheral PGE2 failed. However, it is usually ignored that the amphipathic molecules of PGE2 are readily self-associating and that such an aggregation could hav...

In a study of the febrile responses of rabbits to repeated intravenous injections of pyrogenic substances from Eberthella typhosa, Serratia marcescens, and Pseudomonas aeruginosa, the following observations were made: 1. A characteristic pattern of response to daily injections of the same dose of pyrogenic material was noted. This consisted of a progressive diminution in febrile response during...

Streptococcal toxic shock syndrome (STSS) is a highly lethal, acute-onset illness that is a subset of invasive streptococcal disease. The majority of clinical STSS cases have been associated with the pyrogenic toxin superantigens (PTSAgs) streptococcal pyrogenic exotoxin A or C (SPE A or C), although cases have been reported that are not associated with either of these exotoxins. Recent genome ...

the blood cannot neutralize or buffer, reactions characterized by chill and prostration follow. The present paper reports a study of these two rival theories. Origin of the work : In order to render saline solutions used in cholera cases nonpyrogenic, Panja, Malik, Paul and Ghosh (1942) prepared hypertonic saline solutions in freshly prepared distilled water and observed that these did not prod...

Sir,?I was interested in the paper entitled ' Pyrogenic reactions following intravenous saline infusions ' by Drs. B. M. Paul and B. C. Chatterjee in the July issue of the' Indian Medical Gazette (Vol. LXXIX, No. 7, p. 304). Nine years ago in the surgical wards of the Mayo Hospital, Lahore, I had occasion to give a particularly large number of intravenous saline infusions for a prolonged period...