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Kidney Int. 2018 Aug;94(2):252-258. doi: 10.1016/j.kint.2018.01.024. Epub 2018 Apr 27.

The role of cannabinoid signaling in acute and chronic kidney diseases.

Author information

1
Laboratory of Diabetic Nephropathy, Department of Medical Sciences, University of Turin, Turin, Italy.
2
Department of Clinical and Biological Sciences, University of Turin, Turin, Italy.
3
Laboratory of Diabetic Nephropathy, Department of Medical Sciences, University of Turin, Turin, Italy. Electronic address: gabriella.gruden@unito.it.

Abstract

The endogenous cannabinoids anandamide and 2-arachidonoylglycerol bind to the cannabinoid receptors of type 1 and 2. These receptors are also the binding sites for exogenous, both natural and synthetic, cannabinoids that are used for recreation purposes. Until recently, cannabinoids and cannabinoid receptors have attracted little interest among nephrologists; however, a full endocannabinoid system (ECS) is present in the kidney and it has recently emerged as an important player in the pathogenesis of diabetic nephropathy, drug nephrotoxicity, and progressive chronic kidney disease. This newly established role of the ECS in the kidney might have therapeutic relevance, as pharmacological modulation of the ECS has renoprotective effects in experimental animals, raising hope for future potential applications in humans. In addition, over the last years, there has been a number of reported cases of acute kidney injury (AKI) associated with the use of synthetic cannabinoids that appear to have higher potency and rate of toxicity than natural Cannabis. This poorly recognized cause of renal injury should be considered in the differential diagnosis of AKI, particularly in young people. In this review we provide an overview of preclinical evidence indicating a role of the ECS in renal disease and discuss potential future therapeutic applications. Moreover, we give a critical update of synthetic cannabinoid-induced AKI.

KEYWORDS:

acute kidney injury; albuminuria; cannabinoid receptor type 1; cannabinoid receptor type 2; cannabinoids; renal fibrosis

PMID:
29706358
DOI:
10.1016/j.kint.2018.01.024
[Indexed for MEDLINE]

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