Recent Understanding of Peritoneal Pathology in Peritoneal Dialysis Patients in Japan

Area of Science:

• Nephrology
• Histopathology
• Medical Complications

Background:

• The peritoneum serves as a dialysis membrane in peritoneal dialysis (PD) due to its vascularity and surface area.
• Peritoneal membranes can undergo detrimental histological and functional changes from peritonitis or high-glucose dialysate.
• Encapsulating peritoneal sclerosis (EPS) is a severe, life-threatening PD complication impacting daily living.

Purpose of the Study:

• To review advances in understanding peritoneal deterioration in PD patients.
• To discuss the impact of histological and macroscopic evaluations on PD-related peritoneal changes.
• To cover recent treatment strategies for PD patients experiencing complications.

Main Methods:

• Histopathological evaluation of peritoneal tissue from PD patients.
• Macroscopic assessment of peritoneal changes.
• Review of existing literature on PD complications and treatments.

Main Results:

• Peritoneal membranes are susceptible to damage from PD, potentially leading to EPS.
• Neutral dialysates have shown improved outcomes compared to older treatments, reducing EPS incidence.
• The pathogenesis of EPS is complex, possibly involving cumulative "two-hit" factors.

Conclusions:

• Histological and macroscopic evaluations are crucial for understanding peritoneal deterioration during PD.
• Advances in dialysate composition, like neutral solutions, have reduced the incidence of severe PD complications.
• Further research into EPS pathogenesis and improved treatment strategies are essential for PD patient care.