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Infect Immun. 1984 November; 46(2): 354-360

Comparative observations of fever and associated clinical hematological and blood biochemical changes after intravenous administration of staphylococcal enterotoxins B and F (toxic shock syndrome toxin-1) in goats.

ABSTRACT

The present investigation was undertaken to examine the characteristics of purified toxic shock syndrome toxin-1 (staphylococcal enterotoxin F) given intravenously to dwarf goats (dose, 0.02 to 20 micrograms kg-1). Rectal temperature, heart rate, rumen motility, plasma zinc and iron concentrations, and certain other blood biochemical and hematological values were studied and compared with the changes seen after intravenous administration of staphylococcal enterotoxin B (dose, 0.02 to 0.5 micrograms kg-1). Similar changes such as fever, tachycardia, inhibition of rumen contractions, drop in plasma zinc and iron concentrations, lymphopenia, and a decrease in serum alkaline phosphatase activity were observed. In contrast to the effects of toxic shock syndrome toxin-1, staphylococcal enterotoxin B induced colic, watery diarrhea with pseudomembranes, hemoconcentration, and a more pronounced increase in blood urea nitrogen. The results obtained demonstrate that (i) in the goat staphylococcal enterotoxin B is much more potent than toxic shock syndrome toxin-1 and (ii) the goat is a useful model to study the gastro-intestinal effects caused by staphylococcal enterotoxin B. The present finding that no clear relationship could be found between the temperature response and the alterations in zinc and iron levels in plasma support the theory that the febrile reactions and the changes in plasma trace metals are mediated by different polypeptides released by activated macrophages.

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