Tranexamic acid: a "diuretic" for the peritoneal membrane?

Area of Science:

• Nephrology
• Pharmacology
• Physiology

Background:

• Ultrafiltration (UF) volume is crucial in peritoneal dialysis (PD).
• Maintaining adequate UF volume can be challenging.
• Tranexamic acid (TNA) is being explored for its potential effects on UF.

Purpose of the Study:

• To investigate the mechanisms by which tranexamic acid (TNA) influences ultrafiltration (UF) volume in an animal model.
• To assess the impact of TNA on peritoneal transport properties (PTP), transcapillary ultrafiltration (TCUF), and lymphatic absorption (LA).

Main Methods:

• A rat model of peritoneal dialysis was used with three groups: control, low-dose TNA, and high-dose TNA.
• Peritoneal transport properties were measured using the peritoneal equilibration test (PET).
• Transcapillary ultrafiltration (TCUF) and lymphatic absorption (LA) were quantified using dextran 70, with histological examination of the peritoneum.

Main Results:

• Drained dialysate volume (DDV) reduction was less pronounced in TNA-treated groups.
• Peritoneal transport properties (PTP) increased, and transcapillary ultrafiltration (TCUF) decreased across all groups.
• Lymphatic absorption (LA) increased in the control group but remained unchanged in TNA groups.
• No significant adverse histological changes were observed in the peritoneum.

Conclusions:

• Tranexamic acid (TNA) effectively maintains UF volume in rats by reducing lymphatic absorption (LA).
• TNA demonstrates a potential role as a "diuretic" for the peritoneal membrane.
• The study supports the safe use of TNA in PD to manage UF volume without significant adverse effects.