Changes in reduced glutathione, oxidized glutathione, and glutathione peroxidase in cats with naturally occurring chronic kidney disease

The objective of this study was to determine oxidative stress in CKD cats by measuring changes in reduced glutathione (GSH), oxidized glutathione (GSSG), glutathione peroxidase (GPx), and reduced glutathione to oxidized glutathione (GSH/GSSG) ratio in cats with naturally occurring chronic kidney disease (CKD). Thirteen clinically normal client-owned aged-matched cats and 23 naturally occurring CKD cats were included. Completed blood count, blood urea nitrogen, creatinine, GSH, GPx, GSSG, and GSH/GSSG ratio were measured on the first day of diagnosis. The results showed that CKD cats had significantly lower GSH, GPx, and GSH/GSSG ratio levels (2.77 ± 0.27 mM, 2.32 ± 0.40 nmol/min and 148.26 ± 34.19) than the clinically normal client-owned age-matched cats (4.23 ± 0.67 mM, 6.68 ± 0.79 nmol/min and 312.64 ± 76.80). The GSSG in the CKD cats (35.20 ± 4.37 μM) was significantly higher than in the clinically normal client-owned age-matched cats (19.66 ± 2.75 μM). The results indicated that cats with naturally occurring CKD experience oxidative stress.
Source: Comparative Clinical Pathology - Category: Pathology Source Type: research