High prevalence of antiphospholipid antibodies in children with idiopathic cerebral ischemia
Related Experiment Video
Updated: Sep 13, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
Published on: August 18, 2015
L Angelini1, A Ravelli, R Caporali
1Istituto Nazionale Neurologico Carlo Besta, Milano, Italy.
Insights
Antiphospholipid antibodies (aPLs) are highly prevalent in children experiencing unexplained cerebral ischemia. Testing for these antibodies is recommended due to their significant therapeutic implications.
Area of Science:
- Pediatric Neurology
- Immunology
- Vascular Medicine
Background:
- Circulating antiphospholipid antibodies (aPLs) are linked to thromboembolic events.
- Idiopathic cerebral ischemia in children requires further etiological investigation.
Purpose of the Study:
- To determine the prevalence of antiphospholipid antibodies (aPLs), specifically lupus anticoagulant (LA) and anticardiolipin antibodies (aCL), in children with idiopathic cerebral ischemia.
- To assess the diagnostic utility of aPL testing in this pediatric population.
Main Methods:
- A prospective case series design was employed in a pediatric neurology setting.
- Thirteen children with confirmed cerebral ischemia (stroke, TIA, ocular ischemia) were evaluated.
- aPL testing (LA and aCL) was conducted twice, within 3 days and 3-6 months post-event, with positivity defined by consistent moderate/high levels.
Main Results:
- A high prevalence of aPLs was observed, with 76% (10 out of 13) of pediatric patients testing positive for LA or aCL.
- No significant differences in clinical or radiological features were noted between aPL-positive and aPL-negative groups.
- Nearly half (46%) of the patients had a history of recurrent ischemic events.
Conclusions:
- The study reveals a markedly high prevalence of antiphospholipid antibodies in children suffering from idiopathic cerebral ischemia.
- Given the substantial therapeutic implications associated with aPL positivity, routine testing in pediatric cases of cerebral ischemia is strongly advised.
Background:
The presence of circulating antiphospholipid antibodies (aPLs) is frequently associated with thromboembolic phenomena.
Objective:
To investigate the prevalence of aPLs, detected as lupus anticoagulant (LA) or anticardiolipin antibody (aCL), in a group of unselected children with idiopathic cerebral ischemia.
Design:
Prospective, case series.
Setting:
A pediatric neurology department.
Patients:
Thirteen children with cerebral ischemia (eight with stroke, three with transient ischemic attacks, and two with ocular ischemia). Age-matched apparently healthy children served as controls.
Measurements:
LA and aCL determination was performed within 3 days after the occurrence of the ischemic event and was repeated after 3 to 6 months. To be defined as aPL-positive, patients had to have either a positive LA test or positive IgG and/or IgM aCL at moderate/high level in both determinations.
Main Results:
Ten (76%) of the 13 patients were positive for either LA or aCL. No differences were found between aPL-positive and aPL-negative patients with respect to clinical manifestations or radiological features. Six (46%) of the 13 patients had a history of multiple ischemic events.
Conclusions:
Our results show a very high prevalence of aPLs in children with idiopathic cerebral ischemia. Because the presence of these antibodies has relevant therapeutic implications, their determination in children with cerebral ischemia is recommended.
Related Concept Videos
Ischemic Stroke l: Introduction
Ischemic Stroke ll: Pathophysiology
Hemorrhagic Stroke ll: Pathophysiology
Transient Ischemic Attack l: Introduction
Encephalitis l: Introduction
Cerebral Edema ll: Pathophysiology

