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Differentiation of stable kidney function versus progressive dysfunction in dogs.


ABSTRACT:

Background

Circulating creatinine and symmetric dimethylarginine (SDMA) are biomarkers of kidney function that have been used variously to define stable vs progressive chronic kidney disease (CKD). Slope monitoring of inverse biomarker values (creatinine-1 or SDMA-1 ) has shown promise, but quantitative criteria to distinguish stable vs progressive CKD using this approach are lacking.

Objective

Assessment of creatinine-1 and SDMA-1 slope cutoffs to distinguish stable vs progressive CKD.

Animals

One hundred ten clinically healthy university staff-owned dogs and 29 male colony dogs with progressive X-linked hereditary nephropathy (XLHN).

Methods

Retrospective analysis combining 2 prospective observational studies, 1 tracking kidney function biomarkers in healthy dogs (HDs) to a maximum of 3 years, and 1 tracking kidney function biomarkers in male colony dogs with progressive XLHN to a maximum of 1 year. The minimum slope of creatinine-1 or SDMA-1 as measured using the IDEXX SDMA test from HD was assigned as the slope cutoff for stable kidney function.

Results

The stable vs progressive slope cutoff was -0.0119 week × dL/mg for creatinine-1 and -0.0007 week × dL/μg for SDMA-1 .

Conclusions and clinical importance

In the studied CKD population, progressive dysfunction can be distinguished from stable kidney function by using the slope of creatinine-1 or SDMA-1 . These criteria may serve to characterize CKD in other cohorts of dogs and to establish guidelines for degrees of progression rate in dogs with naturally occurring CKD.

SUBMITTER: Cowgill LD 

PROVIDER: S-EPMC10658543 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Publications

Differentiation of stable kidney function versus progressive dysfunction in dogs.

Cowgill Larry D LD   Segev Gilad G   Vaden Shelly S   Ross Sheri S   Dufayet Cedric C   Cohn Leah A LA   Nabity Mary M   Farace Giosi G   Szlosek Donald D   Ouyang Zenhwa Z   Peterson Sarah S   Beall Melissa M   Yerramilli Murthy M   Polzin David D  

Journal of veterinary internal medicine 20231020 6


<h4>Background</h4>Circulating creatinine and symmetric dimethylarginine (SDMA) are biomarkers of kidney function that have been used variously to define stable vs progressive chronic kidney disease (CKD). Slope monitoring of inverse biomarker values (creatinine<sup>-1</sup> or SDMA<sup>-1</sup> ) has shown promise, but quantitative criteria to distinguish stable vs progressive CKD using this approach are lacking.<h4>Objective</h4>Assessment of creatinine<sup>-1</sup> and SDMA<sup>-1</sup> slope  ...[more]

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