P1008THERAPY with sodium-glucose cotransporter type 2 inhibitors increases klotho in type 2 diabetic patients
Abstract
Klotho (KL) is a transmembrane protein that is expressed the highest in the tubular cells of the kidneys. In addition to membrane KL, a secreted form of this protein that is present in blood and urine is generated by ectodomain shedding of membrane KL from the cell surface or from the KL gene through alternative splicing. Preserved KL expression has been related to physiological protection in the human kidneys. Sodium-glucose cotransporter 2 inhibitors (SGLT2i) are a new class of antidiabetic drugs with important renal benefits. The aim of the present proof-of-concept study was to analyze if treatment with SGLT2i is associated with changes in soluble KL concentrations as well as with modifications in mRNA expression levels of the KL gene in renal tubular cells.
Thirty-four patients (18 males and 16 males; mean age 61±5 years) with type 2 diabetes (mean diabetes time higher than 10 years) and CKD G2-A2, all treated with metformin and blockers of the renin-angiotensin system during more than one year, were included in the study. Twenty-four of them received SGLT2i during 6 months (8 empagliflozin, 8 canagliflozin, 8 dapagliflozin), and their data and evolution were compared with a group of 10 patients matched by age, sex and stage of CKD who received sulfonylureas or DPP4 inhibitors. Serum and urine levels of soluble KL and tumor necrosis factor-alpha (TNFa) were determined by ELISA. In addition, the effect of SGLT2i on mRNA expression levels of KL was assessed in vitro in…
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