Thrombin lag time is increased in children with mild asthma

Area of Science:

• Pediatric Pulmonology
• Hemostasis and Thrombosis
• Inflammatory Diseases

Background:

• Inflammation and coagulation pathways are interconnected.
• Thrombin, a key coagulation enzyme, plays a role in inflammatory processes.

Purpose of the Study:

• To investigate thrombin generation dynamics in pediatric patients diagnosed with mild asthma.

Main Methods:

• Compared thrombin generation tests (TGT) using calibrated automated thrombogram (CAT) in 42 children with mild asthma and 49 healthy children.
• Assessed endogenous thrombin potentials, peak thrombin, thrombin lag time, and time to peak.

Main Results:

• Children with mild asthma exhibited significantly longer thrombin lag times (3.98±1.2 min) versus controls (3.29±0.6 min).
• A longer thrombin tail time was observed in asthmatic children (19.5±8.9 min) compared to controls (16.7±2.9 min).
• Thrombin peak and lag time showed inverse correlations with FEF 25-75, a measure of airflow obstruction.

Conclusions:

• Mild asthma in children appears to influence coagulation, potentially by affecting the initiation phase of thrombin generation.
• The observed coagulation disturbances in mild asthma may not elevate overall thrombin levels significantly.