[Biocompatibility of peritoneal dialysis fluids]

Area of Science:

• Nephrology
• Biomaterials Science
• Cell Biology

Background:

• Conventional glucose-based peritoneal dialysis fluids (PDFs) can cause peritoneal membrane damage due to poor biocompatibility.
• Factors like low pH, high glucose, and heat sterilization contribute to reduced biocompatibility.
• Glucose degradation products (GDPs) and advanced glycation end-products (AGEs) form in PDFs, impacting cell function.

Purpose of the Study:

• To assess the in vitro biocompatibility of peritoneal dialysis fluids (PDFs).
• To identify factors influencing PDF biocompatibility.
• To evaluate the impact of improved PDF biocompatibility on peritoneal membrane health.

Main Methods:

• Utilized immortalized human peritoneal mesothelial cells for in vitro biocompatibility assessments.
• Analyzed the effects of pH, glucose concentration, and heat sterilization on PDF biocompatibility.
• Examined the role of glucose degradation products (GDPs) and glycation in PDF-induced cellular changes.

Main Results:

• Low pH, high glucose, and heat sterilization were identified as key factors reducing PDF biocompatibility.
• Newer PDFs with physiological pH and reduced GDP content demonstrate significantly improved biocompatibility.
• Improved PDF biocompatibility is associated with preserved peritoneal membrane structure and function.

Conclusions:

• Enhancing PDF biocompatibility is crucial for preventing peritoneal membrane damage.
• Utilizing PDFs with physiological pH and low GDP content supports long-term peritoneal dialysis.
• Improved biocompatibility may reduce the incidence of chronic chemical peritonitis and extend the usability of PD therapy.