Mortality is increased by procalcitonin and decreased by an antiserum reactive to procalcitonin in experimental sepsis

Critical Care Medicine
E S NylenK L Becker

Abstract

Procalcitonin (ProCT), the precursor to the calcitonin hormone, is abnormally increased in experimental and clinical systemic inflammation, including sepsis. Initially, we investigated the effects of supraphysiologic amounts of ProCT administered to animals with septic peritonitis. Subsequently, we evaluated the efficacy of prophylactic and therapeutic immune blockade of ProCT in this lethal model of sepsis. Prospective, experimental, controlled study. Animal research laboratory approved by the American Association for the Accreditation of Laboratory Animal Care at a Veterans Affairs Medical Center. Young male Golden Syrian hamsters, weighing 90 to 120 g. In the first study, serum ProCT concentrations were measured in animals at 0, 3, 6, 12, and 24 hrs after induction of sepsis by intraperitoneal implantation of pellets containing Escherichia coli (5 x 10(8) colony-forming units/pellet). In the second study, with mortality as the end point, 30 microg/kg of isolated, purified human ProCT in 10% hamster serum (experimental) or an equal volume of 10% hamster serum (control) were administered intravenously at the time of the E. coli peritoneal implantation. In the third study, experimental animals received intraperitoneal injection...Continue Reading

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