Objective: To assess the utility of the neutrophil-to-lymphocyte ratio (NLR) in predicting outcome in canine pneumonia compared with routine hematological parameters and systemic inflammatory response syndrome (SIRS) scores.Design: Retrospective study.Setting: University teaching hospital. Animals: Forty-nine client-owned dogs.
Interventions: NoneMeasurements and Main Results: Medical records were reviewed to identify dogs with a diagnosis of pneumonia from July 2011 to December 2016. Signalment, clinical findings, laboratory characteristics, and outcome were recorded. Inclusion criteria were a clinical and radiographic diagnosis of pneumonia, plus reference laboratory hematology at diagnosis. Cases that received steroids were excluded. Euthanized dogs were only included in statistical analysis if euthanized solely due to pneumonia severity. The NLR, total WBC count, neutrophil count, lymphocyte count, band neutrophil percent of total WBC count (%-bands), and percentage of cases diagnosed with SIRS were compared between survivors and nonsurvivors. Receiver operating characteristic curves were generated to identify optimal sensitivity and specificity cutoffs for nonsurvival to discharge. Two hundred records were retrieved; 49 cases fulfilled the inclusion criteria. Of these, 33 (67%) survived to discharge.
A fluorogenic peptide substrate for HCMV proteinase was synthesized by solid-phase peptide synthesis. The amino acid sequence of this substrate is derived from the maturation cleavage site (M site) of the natural substrate, the assembly protein precursor. The minimum sequence for efficient cleavage requires at least seven residues (P4-P3′). A systematic modification of the peptide substrate was carried out to identify positions suitable for the introduction of the fluorescent donor and the quencher acceptor groups.
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