Tissue, urine and blood metabolite signatures of chronic kidney disease in the 5/6 nephrectomy rat model

Munsoor A. Hanifa, Martin Skott, Raluca G. Maltesen, Bodil S. Rasmussen, Søren Nielsen, Jørgen Frøkiær, Troels Ring, Reinhard Wimmer*

*Kontaktforfatter

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

19 Citationer (Scopus)

Abstrakt

Introduction: Progressive chronic kidney disease (CKD) is an important cause of morbidity and mortality. It has a long asymptomatic phase, where routine blood tests cannot identify early functional losses, and therefore identifying common mechanisms across the many etiologies is an important goal. Objectives: Our aim was to characterize serum, urine and tissue (kidney, lung, heart, spleen and liver) metabolomics changes in a rat model of CKD. Methods: A total of 17 male Wistar rats underwent 5/6 nephrectomy, whilst 13 rats underwent sham operation. Urine samples were collected weekly, for 6 weeks; blood was collected at weeks 0, 3 and 6; and tissue samples were collected at week 6. Samples were analyzed on a nuclear magnetic resonance spectroscopy platform with multivariate and univariate data analysis. Results: Changes in several metabolites were statistically significant. Allantoin was affected in all compartments. Renal asparagine, creatine, hippurate and trimethylamine were significantly different; in other tissues creatine, dimethylamine, dimethylglycine, trigonelline and trimethylamine were significant. Benzoate, citrate, dimethylglycine, fumarate, guanidinoacetate, malate, myo-inositol and oxoglutarate were altered in urine or serum. Conclusion: Although the metabolic picture is complex, we suggest oxidative stress, the gut-kidney axis, acid–base balance, and energy metabolism as promising areas for future investigation.

OriginalsprogEngelsk
Artikelnummer112
TidsskriftMetabolomics
Vol/bind15
Udgave nummer8
Antal sider16
ISSN1573-3882
DOI
StatusUdgivet - aug. 2019

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