Increased thrombin generation in patients with chronic renal failure

Area of Science:

• Nephrology
• Hematology
• Clinical Chemistry

Background:

• Chronic uremia is associated with latent hypercoagulability.
• Prothrombin fragment 1 + 2 (F1 + 2) is a sensitive marker for hypercoagulability.

Purpose of the Study:

• To evaluate the degree of hypercoagulation in patients with chronic kidney disease.
• To assess the relationship between F1 + 2 levels and renal function.
• To investigate the mechanism of elevated F1 + 2 in uremia.

Main Methods:

• Plasma F1 + 2 levels were measured using ELISA in 51 patients with chronic renal failure and 33 healthy controls.
• Patients were categorized based on treatment: dietary, hemodialysis (once weekly or maintenance).
• Correlation with serum creatinine and effects of heparin administration were analyzed.

Main Results:

• Plasma F1 + 2 levels were significantly elevated in all patient groups compared to controls.
• F1 + 2 levels increased progressively with the severity of renal failure and hemodialysis frequency.
• A positive correlation was observed between F1 + 2 and serum creatinine in diet-treated patients.
• Heparin administration reduced F1 + 2 levels, indicating accelerated thrombin generation.
• No increase in F1 + 2 was observed during a single hemodialysis session.

Conclusions:

• Elevated plasma F1 + 2 in chronic uremia reflects accelerated in vivo thrombin generation.
• The degree of hypercoagulation is linked to the severity of renal failure.
• Enhanced coagulation activation may contribute to the heightened risk of vascular events in uremic patients.