Table 1

- Effects of different antidiabetic drugs on the serum uric acid level in patients with type-2 diabetes mellitus.

Drugs classSerum UA levelsMechanisms
MetforminAmeliorates insulin resistance and hyperinsulinemia, which increases urinary clearance of UA and reduces UA production.
Sulfonylureas
GlibenclamideNSNA
GliclazideNS
GlimepirideNS
Dipeptidyl peptidase 4 inhibitors
SitagliptinUnknown
AlogliptinDecreases UA production by suppressing
Linagliptinxanthine oxidase activity
VildagliptinUnknown
Alpha-glucosidase inhibitors
AcarboseNo dataNA
VogliboseNSNA
Thiazolidinediones
TroglitazoneAmeliorates insulin resistance and
Rosiglitazonehyperinsulinemia; increases urine pH, which
Pioglitazoneenhances urinary excretion of UA
InsulinIncreases urate reabsorption via URAT1 or sodium-dependent anion cotransporter in renal proximal tubules
Glucagon-like peptide-1 receptor agonists
ExenatideNSNA
LiraglutideNS
LixisenatideNS
DulaglutideNS
Sodium-glucose cotransporter 2 inhibitors
EmpagliflozinIncreases renal excretion of urate by altering renal tubular UA transporters (GLUT9 and URAT1); decreases flux through the pentose phosphate pathway via indirect activation of sirtuin-1, which can inhibit xanthine oxidase
Dapagliflozin
Canagliflozin
Luseogliflozin
Tofogliflozin
Ipragliflozin

GLUT9: glucose transporter 9, NA: not applicable, NS: not significant, UA: uric acid, URAT1: urate transporter 1