Spinal-fluid procoagulant activity: a sensitive indicator of central-nervous-system damage

Area of Science:

• Neuroscience
• Hematology
• Biochemistry

Background:

• Procoagulant activity (PCA) in cerebrospinal fluid (CSF) is a potential biomarker for central nervous system (CNS) damage.
• Assessing PCA via plasma-recalcification time offers insights into neurological conditions.

Purpose of the Study:

• To investigate procoagulant activity (PCA) levels in the cerebrospinal fluid (CSF) of children with CNS infections and acute lymphatic leukemia (ALL) undergoing CNS prophylaxis.
• To evaluate the correlation of PCA with treatment and neurological sequelae.

Main Methods:

• Measured procoagulant activity (PCA) in CSF samples from normal children, those with CNS infections, and patients with acute lymphatic leukemia (ALL).
• Analyzed PCA levels before, during, and after CNS prophylaxis (intrathecal methotrexate and/or cranial irradiation) in ALL patients.
• Utilized ether extraction to determine the lipid properties of the active material in CSF.

Main Results:

• Significantly elevated PCA in children with CNS infections (59 +/- 13%) compared to normal controls (14 +/- 6%).
• PCA remained high in a majority of CNS infection patients post-therapy.
• PCA increased significantly during CNS prophylaxis in ALL patients (41 +/- 11%), with higher levels persisting in younger children long-term.
• Highest PCA levels were observed in children with neurological sequelae.

Conclusions:

• Elevated CSF procoagulant activity (PCA) is associated with CNS infections and CNS prophylaxis in acute lymphatic leukemia (ALL).
• PCA may serve as a sensitive indicator of CNS damage or inflammatory processes in pediatric neurological conditions.
• Lipid components in CSF appear to contribute to procoagulant activity.