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Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
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Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice

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Protease-Activated Receptor-2 and Phospholipid Metabolism Analysis in Hyperuricemia-Induced Renal Injury

Xiaolu Sui1, Tingfei Xie2, Yunpeng Xu1

  • 1Department of Nephrology, The Second Affiliated Hospital of Shenzhen University, Shenzhen 518000, Guangdong, China.

Mediators of Inflammation
|July 24, 2023
PubMed

Insights

Protease-activated receptor-2 (PAR2) drives kidney inflammation in hyperuricemia. Blocking PAR2 with AZ3451 reduces inflammation and injury, offering a potential treatment for hyperuricemia-related renal damage.

Area of Science:

  • Nephrology
  • Inflammation Research
  • Pharmacology

Background:

  • Interstitial inflammation is a key factor in renal injury associated with hyperuricemia.
  • Protease-activated receptor-2 (PAR2) is implicated in inflammatory diseases and acts upstream of the PI3K/AKT/NF-κB pathway.

Purpose of the Study:

  • To investigate the role of PAR2 in hyperuricemia-induced renal injury.
  • To evaluate the therapeutic potential of a PAR2 antagonist (AZ3451) in a rat model of hyperuricemia.

Main Methods:

  • A hyperuricemia rat model was established using adenine and ethambutol.
  • PAR2 and PI3K/AKT/NF-κB pathway expression were analyzed in renal tissues.
  • The effects of the PAR2 antagonist AZ3451 on renal injury, inflammation, and phospholipid metabolism were assessed.

Main Results:

  • Hyperuricemia significantly upregulated PAR2 and PI3K/AKT/NF-κB pathway expression, leading to inflammatory cell infiltration and renal tissue damage.
  • AZ3451 treatment inhibited the PAR2 and PI3K/AKT/NF-κB pathway, reducing tubular dilation and inflammation.
  • Distinct phospholipid metabolism profiles were observed between normal and hyperuricemic rats, and AZ3451 influenced these profiles.

Conclusions:

  • PAR2 activation contributes to hyperuricemia-mediated renal injury by activating the PI3K/AKT/NF-κB pathway.
  • PAR2 antagonism with AZ3451 demonstrates therapeutic promise for mitigating inflammatory responses in hyperuricemia-induced kidney damage.

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