Serum triglyceride and cholesterol concentrations and lipoprotein profiles in dogs with naturally occurring pancreatitis and healthy control dogs.
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BACKGROUND: Previous studies have reported an association between hyperlipidemia and pancreatitis in dogs, but details of this association remain poorly defined. HYPOTHESIS/OBJECTIVES: To compare serum triglyceride and cholesterol concentrations and lipoprotein profiles between dogs with naturally occurring pancreatitis and healthy dogs. ANIMALS: Seventeen dogs with a clinical diagnosis of pancreatitis (Group 1) and 53 healthy control dogs (Group 2). METHODS: Prospective case-control study. RESULTS: In Group 1, 3/17 dogs (18%) had hypertriglyceridemia whereas in Group 2, 4/53 dogs (7.5%) had hypertriglyceridemia (odds ratio [OR], 2.63; 95% confidence interval [CI], 0.52-13.14; P =.35). A significant difference was found in serum triglyceride concentrations between Group 1 (median, 67mg/dL) and Group 2 (median, 54mg/dL; P =.002). In Group 1, 4/17 dogs (24%) had hypercholesterolemia, whereas 1/53 (1.9%) dogs in Group 2 had hypercholesterolemia (OR, 16; 95% CI, 1.64-155.5; P =.01). No significant difference was found in serum cholesterol concentrations between Group 1 (median, 209mg/dL) and Group 2 (median, 227mg/dL; P =.56). Lipoprotein profiles were significantly different between Group 1 and Group 2 dogs (Eigenvalues, 0.6719; R2 =1.0; P =.001). CONCLUSIONS AND CLINICAL IMPORTANCE: Most dogs with pancreatitis (>70%) had serum triglyceride and cholesterol concentrations within reference intervals. In the small percentage of dogs that had hypertriglyceridemia, hypercholesterolemia, or both, increases were mild. Important differences were identified in lipoprotein profiles between dogs with pancreatitis and healthy control dogs. Dogs with pancreatitis had higher low-density lipoprotein fractions and lower triglyceride-rich lipoprotein and high-density lipoprotein fractions than healthy dogs.
