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Molecular mechanisms for uremic toxin-induced oxidative tissue damage via a cardiovascular-renal connection

Hiroshi Watanabe1

  • 1Department of Biopharmaceutics, School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan. hnabe@kumamoto-u.ac.jp

Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan
|August 2, 2013
PubMed

Insights

Protein-bound uremic toxins like indoxyl sulfate (IS) and p-cresyl sulfate (PCS) contribute to chronic kidney disease (CKD) and cardiovascular disease (CVD) progression. Understanding their role in oxidative damage is key to developing new treatments.

Area of Science:

  • Nephrology
  • Cardiology
  • Toxicology

Background:

  • Chronic kidney disease (CKD) leads to dialysis and cardiovascular disease (CVD).
  • CKD affects 13.3 million people in Japan, with 300,000 on hemodialysis.
  • Preventing dialysis and CVD deaths is a public health priority, but CKD-CVD mechanisms are unclear.

Purpose of the Study:

  • Investigate the role of protein-bound uremic toxins in CKD and CVD.
  • Examine the relationship between the redox properties of these toxins and CKD-CVD pathogenesis.
  • Focus on indoxyl sulfate (IS) and p-cresyl sulfate (PCS) to understand molecular mechanisms.

Main Methods:

  • Review of recent studies on uremic toxins, oxidative stress, and cardiovascular-renal connections.
  • Analysis of the impact of IS and PCS on CKD-CVD progression.
  • Examination of redox properties of specific uremic toxins.

Main Results:

  • Protein-bound uremic toxins, difficult to remove by hemodialysis, play a role in CKD and CVD.
  • Indoxyl sulfate (IS) and p-cresyl sulfate (PCS) are implicated in CKD-CVD pathogenesis.
  • These toxins induce oxidative tissue damage through a cardiovascular-renal connection.

Conclusions:

  • Uremic toxins like IS and PCS contribute to CKD-CVD via oxidative stress.
  • Understanding these molecular mechanisms is crucial for novel therapeutic strategies.
  • Targeting uremic toxin-induced damage may prevent dialysis and reduce cardiovascular mortality.

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