Show simple item record

dc.contributor.authorJenkin, Kayte A
dc.contributor.authorO'Keefe, Lannie
dc.contributor.authorSimcocks, Anna C
dc.contributor.authorGrinfeld, Esther
dc.contributor.authorMathai, Michael L
dc.contributor.authorMcAinch, Andrew J
dc.contributor.authorHryciw, Deanne H
dc.description.abstractModulation of the endocannabinoid system as an anti-obesity therapeutic is well established; however, the direct effects of cannabinoid receptor 1 (CB1) antagonism on renal function and structure in a model of diet-induced obesity (DIO) are unknown. The aim of this study was to characterise the renal effects of the CB1 antagonist AM251 in a model of DIO. Male Sprague–Dawley rats were fed a low- or high-fat diet (HFD: 40% digestible energy from lipids) for 10 weeks to elicit DIO (n=9). In a different cohort, rats were fed a HFD for 15 weeks. After 9 weeks consuming a HFD, rats were injected daily for 6 weeks with 3 mg/kg AM251 (n=9) or saline via i.p. injection (n=9). After 10 weeks consuming a HFD, CB1 and megalin protein expression were significantly increased in the kidneys of obese rats. Antagonism of CB1 with AM251 significantly reduced weight gain, systolic blood pressure, plasma leptin, and reduced albuminuria and plasma creatinine levels in obese rats. Importantly, there was a significant reduction in tubular cross-section diameter in the obese rats treated with AM251. An improvement in albuminuria was likely due to the reduction in tubular size, reduced leptinaemia and maintenance of megalin expression levels. In obese rats, AM251 did not alter diastolic blood pressure, sodium excretion, creatinine clearance or expression of the fibrotic proteins VEGFA, TGFB1 and collagen IV in the kidney. This study demonstrates that treatment with CB1 antagonist AM251 improves renal outcomes in obese rats.
dc.publisherSociety for Endocrinology
dc.relation.ispartofjournalJournal of Endocrinology
dc.subject.fieldofresearchClinical Sciences not elsewhere classified
dc.subject.fieldofresearchAnimal Production
dc.subject.fieldofresearchVeterinary Sciences
dc.subject.fieldofresearchClinical Sciences
dc.titleChronic Administration of AM251 Improves Albuminuria and Renal Tubular Structure in Obese Rats
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorSkelly, Deanne

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record