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Reference Desk December 2011

University of Missouri Veterinarians Find Infections Faster By Monitoring Blood Compound

    Blood test for dogs could lead to similar human test

    COLUMBIA, Missouri, December 5, 2011—In pets and people, the time it takes to diagnose an infection may mean life or death. Now, a University of Missouri veterinarian is identifying ways to diagnose pet infections in approximately a third of the current diagnosis time. The resulting test could be used eventually for humans.

    MU Researchers News

    Amy DeClue (right) and Kara Osterbur (left) performing an initial evaluation of a dog at University of Missouri Veterinary Medical Teaching Hospital Intensive Care Unit.

    “Infections can be difficult to diagnose, and many veterinarians have to send samples to a lab and wait three days or more as the lab attempts to grow a culture,” said Amy DeClue, assistant professor of veterinary internal medicine in the MU College of Veterinary Medicine. “Meanwhile, the infection continues to spread each day that veterinarians wait on lab results, which is detrimental to the patient. In extreme infections, called sepsis, more than half of patients die. My group has been evaluating different blood biomarkers that could give a quick and accurate indication of infection, and we believe we’ve found a biomarker that will only require a simple blood test.”

    DeClue and her colleagues found that measuring the amount of the blood biomarker N-terminal portion of pro C-type natriuretic peptide (NT-pCNP) is a good indication of infection, and the same is true in humans. Working with collaborators at Veterinary Diagnostics Institute, DeClue hopes to develop a portable bedside test that veterinarians could use to quickly test patients for infection and ultimately target a better cure.

    “In animal and human medicine, one goal is to reduce the amount of antibiotics used in treatment, to reduce bacterial resistance to antibiotics,” DeClue said. “If successful, future tests could help veterinarians tailor treatment to the specific problem and reduce antibiotic use.”

    “The systems in dogs and people are very applicable to each other, so whatever biomarkers we find in dogs could also benefit people,” DeClue said.

    DeClue has tested several biomarkers for infection in dogs.  “Evaluation of serum NT-pCNP as a diagnostic and prognostic biomarker for sepsis in dogs” was published in the May-June issue of the Journal of Veterinary Internal Medicine and  “Plasma nitrate/nitrite concentrations in dogs with naturally developing sepsis and non-infectious forms of the systemic inflammatory response syndrome,” was published in the November issue of the journal Veterinary Record. Co-authors include Kara Osterbur, a graduate student and emergency and critical care resident in the MU College of Veterinary Medicine.

    The research reported in the published papers is part of Mizzou Advantage, the five unique areas that set MU apart from other universities. The project contributes to the “One Health/One Medicine: The Convergence of Human and Animal Health,” which expands on MU’s pioneering work in the convergence of human and animal health and connects it with research and instruction in health care delivery, health policy, medical ethics, health care business models and the culture of healthy living.

    Source: University of Missouri

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