Clinical characteristics of dogs with food‐responsive protein‐losing enteropathy
2020
Nagata, Noriyuki | Ohta, Hiroshi | Yokoyama, Nozomu | Teoh, Yong Bin | Nisa, Khoirun | Sasaki, Noboru | Osuga, Tatsuyuki | Morishita, Keitaro | Takiguchi, Mitsuyoshi
BACKGROUND: In dogs with protein‐losing enteropathy (PLE), data on the clinical characteristics of food‐responsive PLE (FR‐PLE) remain scarce. OBJECTIVE: To determine the clinical characteristics of FR‐PLE in dogs responsive to ultralow‐fat diet (ULFD) management. ANIMALS: Thirty‐three dogs diagnosed with PLE based on standard diagnostic criteria. METHODS: Retrospective review of medical records. Clinical findings were compared between dogs with FR‐PLE (FR‐PLE group) and those with immunosuppressant‐responsive PLE (IR‐PLE) or nonresponsive PLE (NR‐PLE) (IR/NR‐PLE group). The area under the curve (AUC) of a receiver operating characteristic curve was used to evaluate the ability of factors to differentiate the FR‐PLE and IR/NR‐PLE groups. Survival time was compared between the FR‐PLE and IR/NR‐PLE groups. RESULTS: Twenty‐three dogs responded to ULFD management and were diagnosed with FR‐PLE. The canine chronic enteropathy clinical activity index (CCECAI) was significantly lower in the FR‐PLE group than in the IR/NR‐PLE group (P < .001). The AUC of CCECAI for differentiating the FR‐PLE group was 0.935 (95% confidence interval [CI], 0.845‐1.000) with an optimal cutoff value of 8 (sensitivity, 0.826; specificity, 0.889). Survival times were significantly longer in the FR‐PLE group (median, not reached) than in the IR/NR‐PLE group (median, 432 days; P < .001). CONCLUSIONS AND CLINICAL IMPORTANCE: Dogs that respond to ULFD management and are diagnosed with FR‐PLE are expected to have a favorable prognosis. Clinical scores, specifically the CCECAI, could be useful for differentiating FR‐PLE from IR‐PLE or NR‐PLE.
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