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KMID : 0893420120130020179
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Journal of Veterinary Science
2012 Volume.13 No. 2 p.179 ~ p.185
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C-reactive protein as an indicator of inflammatory responses to experimentally induced cystitis in dogs
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Seo Kyoung-Won
Lee Jong-bok
Ahn Jin-Ok
Lee Hee-Woo
Hwang Cheol-Yong
Youn Hwa-Young
Lee Chang-Woo
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Abstract
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The aim of this study was to demonstrate and assess C-reactive protein (CRP) changes in dogs with induced bacterial cystitis with or without antibiotics. We also evaluated availability of CRP levels to serve as an indicator for monitoring or diagnosing bacterial cystitis. Serial CRP concentrations in dogs with induced bacterial cystitis were higher than those of controls (p < 0.001). CRP concentrations peaked on day 7 and gradually decreased thereafter. In the treatment group, CRP concentrations decreased after medication compared to the untreated group (p = 0.032). CRP levels had a linear correlation with urine white blood cell counts among all groups (r = 0.837, p < 0.001, n = 140). Compared to the negative urine culture group, dogs with positive urine culture results had higher CRP concentrations (median 43.8 mg/L vs. 5.9 mg/L; p < 0.001). Area under the receiver operating characteristic curve was 0.955; when cut-off value was 12.2 mg/L, CRP measurements were found to have a sensitivity of 92.3% and specificity of 86.4%. This result indicates that rapid increases of CRP occurred after inducing bacterial cystitis and CRP may be a useful indicator for monitoring or diagnosing canine bacterial cystitis together with sediment urinalysis and urine bacterial culture.
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KEYWORD
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bacterial cystitis, C-reactive protein, dog, Proteus mirabilis, urine WBC
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