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Tissue Metabolic Profiling Shows That Saccharopine Accumulates During Renal Ischemic-reperfusion Injury, While Kynurenine and Itaconate Accumulate in Renal Allograft Rejection

Overview
Journal Metabolomics
Publisher Springer
Specialty Endocrinology
Date 2020 May 6
PMID 32367163
Citations 7
Authors
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Abstract

To examine metabolic differences between renal allograft acute cellular rejection (ACR) and ischemic-reperfusion injury (IRI), we transplanted MHC-mismatched kidneys and induced 28 min warm-IRI, and collected the ACR and IRI kidneys as well as their respective native and collateral control kidneys. We extracted metabolites from the kidney tissues and found the lysine catabolite saccharopine 12.5-fold enriched in IRI kidneys, as well as the immunometabolites itaconate and kynurenine in ACR kidneys. Saccharopine accumulation is known to be toxic to mitochondria and may contribute to IRI pathophysiology, while itaconate and kynurenine may be reflective of counterregulatory responses to immune activation in ACR.

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